Terminal device, base station device, and communication method

Abstract

This terminal device comprises: a reception unit that receives a PDCCH including a DCI format for instructing transmission of a PUCCH; and a transmission unit that transmits the PUCCH. A given upper layer parameter is set for a PUCCH resource corresponding to the PUCCH. The given upper layer parameter selects one slot number from one set including one or more integer values. The number of slots in which the PUCCH is transmitted corresponds to the one slot number. When subslotLengthForPUCCH is set for PUCCH-Config corresponding to the PUCCH, the number of OFDM symbols included in each of the slots in which the PUCCH is transmitted corresponds to a first OFDM symbol number. The first OFDM symbol number is provided by the subslotLengthForPUCCH, and the one set includes at least 7.

Description

Terminal device, base station device, and communication method

[0001] The present invention relates to a terminal device, a base station device, and a communication method. This application claims priority to Japanese Patent Application No. 2021-107439, filed on June 29, 2021, the contents of which are incorporated herein by reference.

[0002] The radio access method and radio network for cellular mobile communications (hereinafter referred to as "Long Term Evolution (LTE)" or "EUTRA: Evolved Universal Terrestrial Radio Access") is being developed by the Third Generation Partnership Project (3GPP). rd The LTE is being studied in the LTE Generation Partnership Project. In LTE, a base station device is also called an eNodeB (evolved NodeB), and a terminal device is also called a UE (User Equipment). LTE is a cellular communication system in which areas covered by a base station device are arranged in multiple cells. A single base station device may manage multiple serving cells.

[0003] 3GPP is currently studying the next-generation standard (NR: New Radio) to be proposed for IMT (International Mobile Telecommunication)-2020, a standard for next-generation mobile communication systems formulated by the International Telecommunication Union (ITU) (Non-Patent Document 1). NR is required to meet the requirements of three scenarios: eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication) within a single technology framework.

[0004] 3GPP is currently studying the extension of services supported by NR (Non-Patent Document 2).

[0005] "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT docomo, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th - 10th March, 2016. “Release 17 package for RAN”, RP-193216, RAN chairman, RAN1 chairman, RAN2 chairman, RAN3 chairman, 3GPP TSG RAN Meeting #86, Sitges, Spain, 9th ― 12th December, 2019

[0006] One aspect of the present invention provides a terminal device that performs efficient communication, a communication method used in the terminal device, a base station device that performs efficient communication, and a communication method used in the base station device.

[0007] (1) A first aspect of the present invention is a terminal device comprising: a receiving unit that receives a PDCCH including a DCI format that instructs transmission of a PUCCH; and a transmitting unit that transmits the PUCCH. A certain higher layer parameter is set for a PUCCH resource corresponding to the PUCCH, the certain higher layer parameter selecting one number of slots from one set including one or more integer values, the number of slots in which the PUCCH is transmitted is the one number of slots, and a PUCCH-Config corresponding to the PUCCH is set. When subslotLengthForPUCCH is configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols, and when the subslotLengthForPUCCH is not configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols, where the first number of OFDM symbols is given by the subslotLengthForPUCCH and the second number of OFDM symbols is N ｓｌｏｔ ｓｙｍｂ and said one set includes at least 7.

[0008] (2) Also, a second aspect of the present invention is a base station device, comprising: a transmitter that transmits a PDCCH including a DCI format instructing transmission of a PUCCH; and a receiver that receives the PUCCH, wherein a certain higher layer parameter is set for a PUCCH resource corresponding to the PUCCH, the certain higher layer parameter selecting one number of slots from one set including one or more integer values, the number of slots in which the PUCCH is transmitted is the one number of slots, and a PUCCH-Config corresponding to the PUCCH. When subslotLengthForPUCCH is configured for g, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols, and when the subslotLengthForPUCCH is not configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols, where the first number of OFDM symbols is given by the subslotLengthForPUCCH and the second number of OFDM symbols is N ｓｌｏｔ ｓｙｍｂ and said one set includes at least 7.

[0009] (3) Also, a third aspect of the present invention is a communication method used in a terminal device, comprising: a step of receiving a PDCCH including a DCI format instructing transmission of a PUCCH; and a step of transmitting the PUCCH, wherein a certain higher layer parameter is set for a PUCCH resource corresponding to the PUCCH, the certain higher layer parameter selecting one number of slots from one set including one or more integer values, the number of slots in which the PUCCH is transmitted is the one number of slots, and When subslotLengthForPUCCH is set for Config, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols, and when the subslotLengthForPUCCH is not set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols, the first number of OFDM symbols being given by the subslotLengthForPUCCH and the second number of OFDM symbols being N ｓｌｏｔ ｓｙｍｂ and said one set includes at least 7.

[0010] (4) Also, a fourth aspect of the present invention is a communication method used in a base station device, comprising: a step of transmitting a PDCCH including a DCI format instructing transmission of a PUCCH; and a step of receiving the PUCCH, wherein a certain higher layer parameter is set for a PUCCH resource corresponding to the PUCCH, the certain higher layer parameter selecting one number of slots from one set including one or more integer values, the number of slots in which the PUCCH is transmitted is the one number of slots, and -When subslotLengthForPUCCH is set for Config, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols, and when the subslotLengthForPUCCH is not set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols, the first number of OFDM symbols is given by the subslotLengthForPUCCH, and the second number of OFDM symbols is N ｓｌｏｔ ｓｙｍｂ and said one set includes at least 7.

[0011] According to one aspect of the present invention, a terminal device can perform communication efficiently, and a base station device can perform communication efficiently.

[0012] 1 is a conceptual diagram of a wireless communication system according to an aspect of the present embodiment. The subcarrier spacing setting μ and the number of OFDM symbols per slot N according to an aspect of the present embodiment are shown. ｓｌｏｔ ｓｙｍｂ, and an example showing the relationship between CP (cyclic prefix) setting. FIG. 1 is a diagram showing an example of a method for configuring a resource grid according to an aspect of the present embodiment. FIG. 2 is a diagram showing an example of the configuration of a resource grid 3001 according to an aspect of the present embodiment. FIG. 3 is a schematic block diagram showing an example of the configuration of a base station device 3 according to an aspect of the present embodiment. FIG. 4 is a schematic block diagram showing an example of the configuration of a terminal device 1 according to an aspect of the present embodiment. FIG. 5 is a diagram showing an example of the configuration of an SS / PBCH block according to an aspect of the present embodiment. FIG. 6 is a diagram showing an example of monitoring opportunities for a search space set according to an aspect of the present embodiment. FIG. 7 is a diagram showing an example of repeated transmission of a PUCCH when a normal CP is configured according to an aspect of the present embodiment. FIG. 8 is a diagram showing an example of repeated transmission of a PUCCH when an extended CP is configured according to an aspect of the present embodiment.

[0013] Hereinafter, an embodiment of the present invention will be described.

[0014] floor(C) may be a floor function for real number C. For example, floor(C) may be a function that outputs the largest integer within a range that does not exceed real number C. ceil(D) may be a ceiling function for real number D. For example, ceil(D) may be a function that outputs the smallest integer within a range that does not fall below real number D. mod(E,F) may be a function that outputs the remainder when E is divided by F. mod(E,F) may be a function that outputs a value corresponding to the remainder when E is divided by F. exp(G) = e^G, where e is Napier's constant. H^I represents H to the Ith power. max(J,K) is a function that outputs the maximum value of J and K. Here, if J and K are equal, max(J,K) is a function that outputs J or K. min(L,M) is a function that outputs the maximum value of L and M. Here, when L and M are equal, min(L, M) is a function that outputs L or M. round(N) is a function that outputs the integer value closest to N. "·" indicates multiplication.

[0015] In a wireless communication system according to one aspect of the present embodiment, at least Orthogonal Frequency Division Multiplex (OFDM) is used. An OFDM symbol is a time domain unit of OFDM. The OFDM symbol includes at least one or more subcarriers. The OFDM symbol is converted into a time-continuous signal in baseband signal generation. In the downlink, at least Cyclic Prefix-Orthogonal Frequency Division Multiplex (CP-OFDM) is used. In the uplink, either CP-OFDM or Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex (DFT-s-OFDM) is used. DFT-s-OFDM may be achieved by applying Transform precoding to CP-OFDM.

[0016] The OFDM symbol may be a name including a CP added to the OFDM symbol. In other words, a certain OFDM symbol may be configured to include the certain OFDM symbol and a CP added to the certain OFDM symbol.

[0017] Fig. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. In Fig. 1, the wireless communication system includes at least terminal devices 1A to 1C and a base station device 3 (BS#3: Base station#3). Hereinafter, terminal devices 1A to 1C will also be referred to as terminal device 1 (UE#1: User Equipment#1).

[0018] The base station device 3 may be configured to include one or more transmitting devices (or transmission points, transmitting / receiving devices, or transmitting / receiving points). When the base station device 3 is configured by multiple transmitting devices, the multiple transmitting devices may be located at different positions.

[0019] The base station device 3 may provide one or more serving cells. A serving cell may be defined as a set of resources used for wireless communication. A serving cell may also be referred to as a cell.

[0020] A serving cell may be configured to include one or both of a downlink component carrier (downlink carrier) and one or both of an uplink component carrier (uplink carrier). A serving cell may be configured to include two or more downlink component carriers and one or both of two or more uplink component carriers. Downlink component carriers and uplink component carriers are also collectively referred to as component carriers (carriers).

[0021] For example, one resource grid may be provided for each component carrier. Alternatively, one resource grid may be provided for each set of one component carrier and a certain subcarrier spacing configuration μ, where the subcarrier spacing configuration μ is also referred to as numerology. For example, one resource grid may be provided for a set of a certain antenna port p, a certain subcarrier spacing configuration μ, and a certain transmission direction x.

[0022] The resource grid is ｓｉｚｅ，μ ｇｒｉｄ，ｘ N ＲＢ ｓｃ where the resource grid includes common resource blocks N ｓｔａｒｔ，μ ｇｒｉｄ，ｘ Also, the common resource block N ｓｔａｒｔ，μ ｇｒｉｄ，ｘ is also called the reference point of the resource grid.

[0023] The resource grid is ｓｕｂｆｒａｍｅ，μ ｓｙｍｂ It contains OFDM symbols.

[0024] The subscript x added to the resource grid related parameters indicates the transmission direction, for example, the subscript x may be used to indicate either the downlink or the uplink.

[0025] N ｓｉｚｅ，μ ｇｒｉｄ，ｘ is the offset setting indicated by a parameter provided by the RRC layer (e.g., the parameter CarrierBandwidth). ｓｔａｒｔ，μ ｇｒｉｄ，ｘ is a bandwidth configuration indicated by a parameter provided by the RRC layer (e.g., parameter OffsetToCarrier). The offset configuration and the bandwidth configuration are configurations used to configure an SCS-specific carrier.

[0026] The subcarrier spacing (SCS) Δf for a certain subcarrier spacing setting μ is Δf=2 μ It may be 15 kHz, where the subcarrier spacing setting μ may represent any of 0, 1, 2, 3, or 4.

[0027] FIG. 2 shows a subcarrier spacing setting μ and the number of OFDM symbols per slot N according to one aspect of this embodiment. ｓｌｏｔ ｓｙｍｂ 2A is an example showing the relationship between the subcarrier spacing setting μ and the CP (cyclic prefix) setting. In FIG. 2A, for example, when the subcarrier spacing setting μ is 2 and the CP setting is a normal cyclic prefix (CP), N ｓｌｏｔ ｓｙｍｂ = 14, N ｆｒａｍｅ，μ ｓｌｏｔ = 40, N ｓｕｂｆｒａｍｅ，μ ｓｌｏｔ 2B, for example, when the subcarrier spacing setting μ is 2 and the CP setting is an extended cyclic prefix (CP), N ｓｌｏｔ ｓｙｍｂ = 12, N ｆｒａｍｅ，μ ｓｌｏｔ = 40, N ｓｕｂｆｒａｍｅ，μ ｓｌｏｔ =4.

[0028] Time unit (time unit) T ｃ may be used to express a length in the time domain. ｃ Is T ｃ = 1 / (Δf ｍａｘ ・N ｆ ) Δf ｍａｘ = 480 kHz. ｆ = 4096. The constant κ is κ = Δf ｍａｘ ・N ｆ / (Δf ｒｅｆ N ｆ，ｒｅｆ ) = 64. ｒｅｆ is 15 kHz. ｆ，ｒｅｆ is 2048.

[0029] The transmission of the signal in the downlink and / or the transmission of the signal in the uplink may be performed over a period of time T ｆ The radio frame (system frame, frame) may be organized into T ｆ = (Δf ｍａｘ N ｆ / 100) T ｓ = 10 ms. A radio frame is composed of 10 subframes. The length of a subframe is T ｓｆ = (Δf ｍａｘ N ｆ / 1000) T ｓ = 1 ms. The number of OFDM symbols per subframe is N ｓｕｂｆｒａｍｅ，μ ｓｙｍｂ = N ｓｌｏｔ ｓｙｍｂ N ｓｕｂｆｒａｍｅ，μ ｓｌｏｔ is.

[0030] An OFDM symbol is a unit of time domain for one communication method. For example, an OFDM symbol may be a unit of time domain for CP-OFDM. Alternatively, an OFDM symbol may be a unit of time domain for DFT-s-OFDM.

[0031] A slot may consist of multiple OFDM symbols, e.g., N consecutive OFDM symbols. ｓｌｏｔ ｓｙｍｂFor example, in the normal CP setting, N OFDM symbols may constitute one slot. ｓｌｏｔ ｓｙｍｂ In addition, in the setting of the extended CP, N ｓｌｏｔ ｓｙｍｂ =12.

[0032] For a given subcarrier spacing setting μ, the number and index of slots included in the subframe may be given. For example, slot index n μ ｓ is a subframe from 0 to N ｓｕｂｆｒａｍｅ，μ ｓｌｏｔ The subcarrier interval μ may be set to an integer value in the range of −1 to −1 in ascending order. The number and index of slots included in the radio frame may be given for setting the subcarrier interval μ. Also, the slot index n μ ｓ，ｆ is from 0 to N in the radio frame. ｆｒａｍｅ，μ ｓｌｏｔ The values ​​may be given in ascending order as integers ranging from -1.

[0033] 3 is a diagram illustrating an example of a method for configuring a resource grid according to one aspect of the present embodiment. The horizontal axis of FIG. 3 represents the frequency domain. In FIG. 3, the subcarrier spacing μ １ and the subcarrier spacing μ ２ 3 shows an example of the configuration of a resource grid of μ. In this way, one or more subcarrier spacings may be set for a certain component carrier. １ = μ ２ -1, various aspects of the present embodiment １ = μ ２ It is not limited to the condition of -1.

[0034] The component carrier 300 is a band having a predetermined width in the frequency domain.

[0035] A point 3000 is an identifier for identifying a certain subcarrier. The point 3000 is also called point A. A common resource block (CRB) set 3100 is a set of subcarrier intervals μ １ is a set of common resource blocks for

[0036] In the common resource block set 3100, the common resource block including the point 3000 (the black block in the common resource block set 3100 in FIG. 3 ) is also referred to as the reference point of the common resource block set 3100. The reference point of the common resource block set 3100 may be the common resource block with index 0 in the common resource block set 3100.

[0037] The offset 3011 is the offset from the reference point of the common resource block set 3100 to the reference point of the resource grid 3001. The offset 3011 is determined by the subcarrier spacing setting μ １ The resource grid 3001 is represented by the number of common resource blocks for N ｓｉｚｅ，μ ｇｒｉｄ１，ｘ It contains common resource blocks.

[0038] The offset 3013 is the distance from the reference point of the resource grid 3001 to the reference point (N ｓｔａｒｔ，μ ＢＷＰ，ｉ１ ) is the offset to

[0039] The common resource block set 3200 is a set of subcarrier spacing μ ２ is a set of common resource blocks for

[0040] In the common resource block set 3200, the common resource block including the point 3000 (the black block in the common resource block set 3200 in FIG. 3 ) is also referred to as the reference point of the common resource block set 3200. The reference point of the common resource block set 3200 may be the common resource block with index 0 in the common resource block set 3200.

[0041] The offset 3012 is the offset from the reference point of the common resource block set 3200 to the reference point of the resource grid 3002. The offset 3012 is the offset from the reference point of the common resource block set 3200 to the reference point of the resource grid 3002. ２ The resource grid 3002 is represented by the number of common resource blocks relative to the N ｓｉｚｅ，μ ｇｒｉｄ２，ｘ It contains common resource blocks.

[0042] The offset 3014 is the distance from the reference point of the resource grid 3002 to the reference point of the BWP 3004 with index i2 (N ｓｔａｒｔ，μ ＢＷＰ，ｉ２ ) is the offset to

[0043] 4 is a diagram showing an example of the configuration of a resource grid 3001 according to one aspect of this embodiment. In the resource grid of FIG. 4, the horizontal axis represents OFDM symbol index l. ｓｙｍ and the vertical axis is the subcarrier index k ｓｃ The resource grid 3001 is ｓｉｚｅ，μ ｇｒｉｄ１，ｘ N ＲＢ ｓｃ subcarriers, and N ｓｕｂｆｒａｍｅ，μ ｓｙｍｂ Within the resource grid, subcarrier index k ｓｃ and OFDM symbol index l ｓｙｍ The resource specified by is also called a resource element (RE).

[0044] Resource blocks (RBs) are N ＲＢｓｃ A resource block is a collective term for a common resource block, a physical resource block (PRB), and a virtual resource block (VRB). ＲＢ ｓｃ =12.

[0045] A resource block unit is a set of resources corresponding to one OFDM symbol in one resource block, i.e., one resource block unit includes 12 resource elements corresponding to one OFDM symbol in one resource block.

[0046] The common resource blocks for a given subcarrier spacing setting μ are indexed in a given common resource block set in the frequency domain in ascending order starting from 0. The common resource block with index 0 for a given subcarrier spacing setting μ contains (or collides with, or coincides with) point 3000. The index n of the common resource block for a given subcarrier spacing setting μ μ ＣＲＢ is n μ ＣＲＢ = ceil(k ｓｃ / N ＲＢ ｓｃ ) relationship is satisfied. Here, k ｓｃ The subcarrier with .gt.=0 is a subcarrier having the same center frequency as the subcarrier corresponding to point 3000.

[0047] The physical resource blocks for a given subcarrier spacing setting μ are indexed in the frequency domain in ascending order starting from 0 in a given BWP. μ ＰＲＢ is n μ ＣＲＢ = n μ ＰＲＢ +N ｓｔａｒｔ，μ ＢＷＰ，ｉ Here, N ｓｔａｒｔ，μＢＷＰ，ｉ denotes the reference point of the BWP with index i.

[0048] A BWP is defined as a subset of common resource blocks contained in a resource grid. ｓｔａｒｔ，μ ＢＷＰ，ｉ Starting with N ｓｉｚｅ，μ ＢＷＰ，ｉ The BWP configured for a downlink carrier is also referred to as a downlink BWP. The BWP configured for an uplink component carrier is also referred to as an uplink BWP.

[0049] An antenna port may be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. For example, a channel may correspond to a physical channel, a symbol may correspond to an OFDM symbol, a symbol may correspond to a resource block unit, or a symbol may correspond to a resource element.

[0050] When the large-scale properties of a channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port, the two antenna ports are said to be quasi-co-located (QCL). Here, the large-scale properties may include at least long-range channel properties. The large-scale properties may include at least some or all of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. The first and second antenna ports being QCL with respect to beam parameters may mean that a receive beam assumed by a receiver for the first antenna port is the same as (or corresponds to) a receive beam assumed by a receiver for the second antenna port. The first antenna port and the second antenna port being QCL with respect to beam parameters may mean that the transmission beam assumed by the receiving side for the first antenna port and the transmission beam assumed by the receiving side for the second antenna port are the same (or correspond to each other). The terminal device 1 may assume that the two antenna ports are QCL if the large-scale characteristics of a channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port. The two antenna ports being QCL may mean that the two antenna ports are assumed to be QCL.

[0051] Carrier aggregation may be performing communication using a plurality of aggregated serving cells. Also, carrier aggregation may be performing communication using a plurality of aggregated component carriers. Also, carrier aggregation may be performing communication using a plurality of aggregated downlink component carriers. Also, carrier aggregation may be performing communication using a plurality of aggregated uplink component carriers.

[0052] 5 is a schematic block diagram showing an example configuration of a base station device 3 according to one aspect of the present embodiment. As shown in FIG. 5, the base station device 3 includes at least a radio transceiver unit (physical layer processing unit) 30 and / or part or all of a higher layer processing unit 34. The radio transceiver unit 30 includes at least an antenna unit 31, an RF (Radio Frequency) unit 32, and part or all of a baseband unit 33. The higher layer processing unit 34 includes at least a medium access control layer processing unit 35 and part or all of a radio resource control (RRC) layer processing unit 36.

[0053] The wireless transceiver 30 includes at least a wireless transmitter 30a and part or all of a wireless receiver 30b. Here, the baseband unit included in the wireless transmitter 30a and the baseband unit included in the wireless receiver 30b may have the same or different device configurations. Furthermore, the RF unit included in the wireless transmitter 30a and the RF unit included in the wireless receiver 30b may have the same or different device configurations. Furthermore, the antenna unit included in the wireless transmitter 30a and the antenna unit included in the wireless receiver 30b may have the same or different device configurations.

[0054] For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a PDSCH. For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a PDCCH. For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a PBCH. For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a synchronization signal. For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a PDSCH DMRS. For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a PDCCH DMRS. For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a CSI-RS. For example, the radio transmitting unit 30a may generate and transmit a baseband signal of a DL PTRS.

[0055] For example, the radio receiving unit 30b may receive a PRACH. For example, the radio receiving unit 30b may receive and demodulate a PUCCH. The radio receiving unit 30b may receive and demodulate a PUSCH. For example, the radio receiving unit 30b may receive a PUCCH DMRS. For example, the radio receiving unit 30b may receive a PUSCH DMRS. For example, the radio receiving unit 30b may receive a UL PTRS. For example, the radio receiving unit 30b may receive an SRS.

[0056] The upper layer processing unit 34 outputs the downlink data (transport block) to the radio transceiver unit 30 (or the radio transmitter unit 30a). The upper layer processing unit 34 performs processing on the Medium Access Control (MAC) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.

[0057] The medium access control layer processing unit 35 included in the upper layer processing unit 34 performs processing of the MAC layer.

[0058] The radio resource control layer processing unit 36 ​​included in the upper layer processing unit 34 performs processing of the RRC layer. The radio resource control layer processing unit 36 ​​manages various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 36 ​​sets parameters based on an RRC message received from the terminal device 1.

[0059] The radio transceiver 30 (or the radio transmitter 30a) performs processes such as modulation and encoding. The radio transceiver 30 (or the radio transmitter 30a) generates a physical signal by modulating, encoding, and generating a baseband signal (converting into a time-continuous signal) downlink data, and transmits the physical signal to the terminal device 1. The radio transceiver 30 (or the radio transmitter 30a) may allocate the physical signal to a certain component carrier and transmit the physical signal to the terminal device 1.

[0060] The radio transceiver 30 (or the radio receiver 30b) performs processes such as demodulation and decoding. The radio transceiver 30 (or the radio receiver 30b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 34. The radio transceiver 30 (or the radio receiver 30b) may perform a channel access procedure prior to transmitting the physical signal.

[0061] The RF unit 32 converts (down-converts) the signal received via the antenna unit 31 into a baseband signal by quadrature demodulation and removes unnecessary frequency components. The RF unit 32 outputs the processed analog signal to the baseband unit.

[0062] The baseband unit 33 converts the analog signal input from the RF unit 32 into a digital signal. The baseband unit 33 removes a portion corresponding to a cyclic prefix (CP) from the converted digital signal, and performs a fast Fourier transform (FFT) on the CP-removed signal to extract a frequency domain signal.

[0063] The baseband unit 33 performs an inverse fast Fourier transform (IFFT) on the data to generate OFDM symbols, adds a CP to the generated OFDM symbols, generates baseband digital signals, and converts the baseband digital signals into analog signals. The baseband unit 33 outputs the converted analog signals to the RF unit 32.

[0064] The RF unit 32 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 33, up-converts the analog signal to a carrier frequency, and transmits the carrier frequency via the antenna unit 31. The RF unit 32 may also have a function to control transmission power. The RF unit 32 is also referred to as a transmission power control unit.

[0065] One or more serving cells (or component carriers, downlink component carriers, uplink component carriers) may be configured for the terminal device 1.

[0066] Each of the serving cells configured for the terminal device 1 may be any of a PCell (Primary cell), a PSCell (Primary SCG cell), and an SCell (Secondary Cell).

[0067] The PCell is a serving cell included in a Master Cell Group (MCG). The PCell is a cell in which the terminal device 1 performs an initial connection establishment procedure or a connection re-establishment procedure (a cell in which the procedure has been performed).

[0068] The PSCell is a serving cell included in an SCG (Secondary Cell Group). The PSCell is a serving cell to which random access is performed by the terminal device 1.

[0069] The SCell may be included in either the MCG or the SCG.

[0070] A serving cell group (cell group) is a term that includes at least an MCG and an SCG. A serving cell group may include one or more serving cells (or component carriers). One or more serving cells (or component carriers) included in a serving cell group may be operated by carrier aggregation.

[0071] One or more downlink BWPs may be configured for each serving cell (or downlink component carrier). One or more uplink BWPs may be configured for each serving cell (or uplink component carrier).

[0072] Of one or more downlink BWPs configured for a serving cell (or a downlink component carrier), one downlink BWP may be configured as the active downlink BWP (or one downlink BWP may be activated). Of one or more uplink BWPs configured for a serving cell (or an uplink component carrier), one uplink BWP may be configured as the active uplink BWP (or one uplink BWP may be activated).

[0073] The PDSCH, PDCCH, and CSI-RS may be received in an active downlink BWP. The terminal device 1 may attempt to receive the PDSCH, PDCCH, and CSI-RS in the active downlink BWP. The PUCCH and PUSCH may be transmitted in an active uplink BWP. The terminal device 1 may transmit the PUCCH and PUSCH in the active uplink BWP. The active downlink BWP and the active uplink BWP are also collectively referred to as active BWPs.

[0074] The PDSCH, PDCCH, and CSI-RS may not be received in a downlink BWP (inactive downlink BWP) other than an active downlink BWP. The terminal device 1 may not attempt to receive the PDSCH, PDCCH, and CSI-RS in a downlink BWP that is not an active downlink BWP. The PUCCH and PUSCH may not be transmitted in an uplink BWP (inactive uplink BWP) that is not an active uplink BWP. The terminal device 1 may not transmit the PUCCH and PUSCH in an uplink BWP that is not an active uplink BWP. The inactive downlink BWP and the inactive uplink BWP are collectively referred to as inactive BWPs.

[0075] A downlink BWP switch is a procedure for deactivating one active downlink BWP of a serving cell and activating one of the inactive downlink BWPs of the serving cell. The downlink BWP switch may be controlled by a BWP field included in downlink control information. The downlink BWP switch may also be controlled based on higher layer parameters.

[0076] The uplink BWP switching is used to deactivate one active uplink BWP and activate any inactive uplink BWP other than the one active uplink BWP. The uplink BWP switching may be controlled by a BWP field included in downlink control information. The uplink BWP switching may also be controlled based on higher layer parameters.

[0077] Of one or more downlink BWPs configured for a serving cell, two or more downlink BWPs may not be configured as active downlink BWPs. At any given time, one downlink BWP may be active for a serving cell.

[0078] Of one or more uplink BWPs configured for a serving cell, two or more uplink BWPs may not be configured as active uplink BWPs. At any given time, one uplink BWP may be active for a serving cell.

[0079] 6 is a schematic block diagram showing an example configuration of a terminal device 1 according to one aspect of the present embodiment. As shown in FIG. 6, the terminal device 1 includes at least a radio transceiver unit (physical layer processing unit) 10 and one or all of an upper layer processing unit 14. The radio transceiver unit 10 includes at least an antenna unit 11, an RF unit 12, and some or all of a baseband unit 13. The upper layer processing unit 14 includes at least a medium access control layer processing unit 15 and some or all of a radio resource control layer processing unit 16.

[0080] The wireless transceiver 10 includes at least a wireless transmitter 10a and part or all of a wireless receiver 10b. Here, the baseband unit 13 included in the wireless transmitter 10a and the baseband unit 13 included in the wireless receiver 10b may have the same or different device configurations. Furthermore, the RF unit 12 included in the wireless transmitter 10a and the RF unit 12 included in the wireless receiver 10b may have the same or different device configurations. Furthermore, the antenna unit 11 included in the wireless transmitter 10a and the antenna unit 11 included in the wireless receiver 10b may have the same or different device configurations.

[0081] For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PRACH. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PUCCH. The radio transmitting unit 10a may generate and transmit a baseband signal for a PUSCH. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PUCCH DMRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PUSCH DMRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a UL PTRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for an SRS.

[0082] For example, the wireless receiving unit 10b may receive and demodulate a PDSCH. For example, the wireless receiving unit 10b may receive and demodulate a PDCCH. For example, the wireless receiving unit 10b may receive and demodulate a PBCH. For example, the wireless receiving unit 10b may receive a synchronization signal. For example, the wireless receiving unit 10b may receive a PDSCH DMRS. For example, the wireless receiving unit 10b may receive a PDCCH DMRS. For example, the wireless receiving unit 10b may receive a CSI-RS. For example, the wireless receiving unit 10b may receive a DL PTRS.

[0083] The upper layer processing unit 14 outputs the uplink data (transport block) to the radio transceiver unit 10 (or the radio transmitter unit 10a). The upper layer processing unit 14 performs processing on the MAC layer, the packet data integration protocol layer, the radio link control layer, and the RRC layer.

[0084] The medium access control layer processing unit 15 included in the upper layer processing unit 14 performs processing of the MAC layer.

[0085] The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing of the RRC layer. The radio resource control layer processing unit 16 manages various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 16 sets the RRC parameters based on an RRC message received from the base station device 3.

[0086] The wireless transceiver 10 (or the wireless transmitter 10a) performs processes such as modulation and encoding. The wireless transceiver 10 (or the wireless transmitter 10a) generates a physical signal by modulating, encoding, and generating a baseband signal (converting into a time-continuous signal) the uplink data, and transmits the physical signal to the base station device 3. The wireless transceiver 10 (or the wireless transmitter 10a) may allocate the physical signal to a certain BWP (active uplink BWP) and transmit it to the base station device 3.

[0087] The radio transceiver 10 (or the radio receiver 10b) performs processes such as demodulation and decoding. The radio transceiver 10 (or the radio receiver 30b) may receive a physical signal in a certain BWP (active downlink BWP) of a certain serving cell. The radio transceiver 10 (or the radio receiver 10b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. The radio transceiver 10 (radio receiver 10b) may perform a channel access procedure prior to transmitting the physical signal.

[0088] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by quadrature demodulation (down-converts) and removes unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit 13.

[0089] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes a portion corresponding to a cyclic prefix (CP) from the converted digital signal, and performs a fast Fourier transform (FFT) on the CP-removed signal to extract a frequency domain signal.

[0090] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the uplink data to generate OFDM symbols, adds a CP to the generated OFDM symbols, generates baseband digital signals, and converts the baseband digital signals into analog signals. The baseband unit 13 outputs the converted analog signals to the RF unit 12.

[0091] The RF unit 12 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 13, up-converts the analog signal to a carrier frequency, and transmits the signal via the antenna unit 11. The RF unit 12 may also have a function to control transmission power. The RF unit 12 is also referred to as a transmission power control unit.

[0092] The physical signals (signals) will be explained below.

[0093] The physical signal is a general term for a downlink physical channel, a downlink physical signal, an uplink physical channel, and an uplink physical channel. The physical channel is a general term for a downlink physical channel and an uplink physical channel. The physical signal is a general term for a downlink physical signal and an uplink physical signal.

[0094] The uplink physical channel may correspond to a set of resource elements that transmit information generated in a higher layer. The uplink physical channel may be a physical channel used in an uplink component carrier. The uplink physical channel may be transmitted by the terminal device 1. The uplink physical channel may be received by the base station device 3. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical channels may be used: PUCCH (Physical Uplink Control CHannel) PUSCH (Physical Uplink Shared CHannel) PRACH (Physical Random Access CHannel)

[0095] The PUCCH may be used to transmit uplink control information (UCI). The PUCCH may be transmitted to deliver, transmit, or convey the uplink control information. The uplink control information may be mapped to the PUCCH. The terminal device 1 may transmit the PUCCH in which the uplink control information is mapped. The base station device 3 may receive the PUCCH in which the uplink control information is mapped.

[0096] The uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) includes at least some or all of channel state information (CSI), scheduling request (SR), and hybrid automatic repeat request ACKnowledgement (HARQ-ACK) information.

[0097] The channel state information is also referred to as a channel state information bit or a channel state information sequence. The scheduling request is also referred to as a scheduling request bit or a scheduling request sequence. The HARQ-ACK information is also referred to as a HARQ-ACK information bit or a HARQ-ACK information sequence.

[0098] The HARQ-ACK information may include at least a HARQ-ACK corresponding to a transport block (TB). The HARQ-ACK may indicate an acknowledgement (ACK) or a negative acknowledgement (NACK) corresponding to the transport block. The ACK may indicate that decoding of the transport block has been successfully completed. The NACK may indicate that decoding of the transport block has not been successfully completed. The HARQ-ACK information may include a HARQ-ACK codebook including one or more HARQ-ACK bits.

[0099] A transport block is a sequence of information bits delivered from a higher layer. Here, the sequence of information bits is also referred to as a bit sequence. Here, the transport block may be delivered via an Uplink-Shared Channel (UL-SCH) of the transport layer.

[0100] The HARQ-ACK for a transport block may be referred to as the HARQ-ACK for a PDSCH. In this case, the "HARQ-ACK for a PDSCH" refers to the HARQ-ACK for a transport block included in the PDSCH.

[0101] The HARQ-ACK may indicate an ACK or NACK corresponding to one CBG (Code Block Group) included in the transport block.

[0102] The scheduling request may be used at least to request UL-SCH resources for an initial transmission. The scheduling request bit may be used to indicate either a positive SR or a negative SR. When the scheduling request bit indicates a positive SR, this is also referred to as "a positive SR is transmitted." A positive SR may indicate that UL-SCH resources for the initial transmission are requested by the terminal device 1. A positive SR may indicate that a scheduling request is triggered by a higher layer. A positive SR may be transmitted when a scheduling request is indicated by a higher layer. When the scheduling request bit indicates a negative SR, this is also referred to as "a negative SR is transmitted." A negative SR may indicate that UL-SCH resources for the initial transmission are not requested by the terminal device 1. A negative SR may indicate that a scheduling request is not triggered by a higher layer. A negative SR may be transmitted when a scheduling request is not indicated by a higher layer.

[0103] The channel state information may include at least some or all of a Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), and a Rank Indicator (RI). The CQI is an indicator related to the quality of the propagation path (e.g., propagation strength) or the quality of the physical channel, the PMI is an indicator related to the precoder, and the RI is an indicator related to the transmission rank (or the number of transmission layers).

[0104] The channel state information is an indicator related to the reception state of at least a physical signal (e.g., a CSI-RS) used for channel measurement. The value of the channel state information may be determined by the terminal device 1 based on the reception state assumed by at least the physical signal used for channel measurement. The channel measurement may include interference measurement.

[0105] A PUCCH may correspond to a PUCCH format. A PUCCH may be a set of resource elements used to convey the PUCCH format. A PUCCH may include a PUCCH format. A PUCCH may be transmitted with a certain PUCCH format. Note that a PUCCH format may be interpreted as a format of information. Alternatively, a PUCCH format may be interpreted as a set of information set to a certain information format.

[0106] The PUSCH may be used to transmit one or both of a transport block and uplink control information. The PUSCH may be used to transmit a transport block delivered by the UL-SCH and uplink control information. A transport block may be allocated to the PUSCH. A transport block delivered by the UL-SCH may be allocated to the PUSCH. Uplink control information may be allocated to the PUSCH. The terminal device 1 may transmit a PUSCH in which one or both of a transport block and uplink control information are allocated. The base station device 3 may receive a PUSCH in which one or both of a transport block and uplink control information are allocated.

[0107] The PRACH may be transmitted to transmit a random access preamble. The terminal device 1 may transmit the PRACH. The base station device 3 may receive the PRACH. The PRACH sequence x ｕ，ｖ (n) is x ｕ，ｖ (n) = x ｕ (mod(n+C ｖ , L ＲＡ ) where x ｕ is a ZC (Zadoff-Chu) sequence. ｕ Ha x ｕ =exp(-jπui(i+1) / L ＲＡ ) where j is the imaginary unit. Also, π is the ratio of the circumference of a circle to its circumference. Also, C ｖ corresponds to the cyclic shift of the PRACH sequence. ＲＡ corresponds to the length of the PRACH sequence. ＲＡ is 839 or 139. Also, i ranges from 0 to L ＲＡ is an integer in the range of -1, and u is the sequence index for the PRACH sequence.

[0108] For each PRACH opportunity, 64 random access preambles are defined. The random access preambles are cyclically shifted C ｖ, and the sequence index u for the PRACH sequence. An index may be assigned to each of the 64 identified random access preambles.

[0109] The uplink physical signal may correspond to a set of resource elements. The uplink physical signal does not have to be used to transmit information generated in a higher layer. The uplink physical signal may be used to transmit information generated in a physical layer. The uplink physical signal may be a physical signal used in an uplink component carrier. The terminal device 1 may transmit the uplink physical signal. The base station device 3 may receive the uplink physical signal. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical signals may be used: UL DMRS (UpLink Demodulation Reference Signal) SRS (Sounding Reference Signal) UL PTRS (UpLink Phase Tracking Reference Signal)

[0110] UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0111] The set of antenna ports for DMRS for PUSCH (DMRS associated with PUSCH, DMRS included in PUSCH, DMRS corresponding to PUSCH) may be given based on the set of antenna ports for the PUSCH. For example, the set of antenna ports for DMRS for PUSCH may be the same as the set of antenna ports for the PUSCH.

[0112] The transmission of the PUSCH and the transmission of the DMRS for the PUSCH may be indicated (or scheduled) by one DCI format. The PUSCH and the DMRS for the PUSCH may be collectively referred to as the PUSCH. Transmitting the PUSCH may be transmitting the PUSCH and the DMRS for the PUSCH.

[0113] The propagation path of the PUSCH may be estimated from the DMRS for the PUSCH.

[0114] The set of antenna ports for DMRS for PUCCH (DMRS associated with PUCCH, DMRS included in PUCCH, DMRS corresponding to PUCCH) may be the same as the set of antenna ports for PUCCH.

[0115] The transmission of a PUCCH and the transmission of a DMRS for the PUCCH may be indicated (or triggered) by one DCI format. One or both of the mapping of the PUCCH to resource elements and the mapping of the DMRS for the PUCCH to resource elements may be provided by one PUCCH format. The PUCCH and the DMRS for the PUCCH may be collectively referred to as the PUCCH. Transmitting the PUCCH may also mean transmitting the PUCCH and the DMRS for the PUCCH.

[0116] The propagation path of the PUCCH may be estimated from the DMRS for the PUCCH.

[0117] The downlink physical channel may correspond to a set of resource elements that transmit information generated in a higher layer. The downlink physical channel may be a physical channel used in a downlink component carrier. The base station device 3 may transmit the downlink physical channel. The terminal device 1 may receive the downlink physical channel. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following downlink physical channels may be used: PBCH (Physical Broadcast Channel) PDCCH (Physical Downlink Control Channel) PDSCH (Physical Downlink Shared Channel)

[0118] The PBCH may be transmitted to convey one or both of a Master Information Block (MIB) and physical layer control information. Here, the physical layer control information is information generated in the physical layer. The MIB is a set of parameters allocated to a Broadcast Control Channel (BCCH), which is a logical channel of the MAC layer. The BCCH is allocated to a BCH, which is a channel of the transport layer. The BCH may be mapped to the PBCH. The terminal device 1 may receive the PBCH allocated with the MIB and / or physical layer control information. The base station device 3 may transmit the PBCH allocated with the MIB and / or physical layer control information.

[0119] For example, the physical layer control information may be composed of 8 bits. The physical layer control information may include at least some or all of the following 0A to 0D: 0A) Radio frame bit, 0B) Half radio frame (half system frame, half frame) bit, 0C) SS / PBCH block index bit, and 0D) Subcarrier offset bit.

[0120] The radio frame bits are used to indicate the radio frame in which the PBCH is transmitted (the radio frame including the slot in which the PBCH is transmitted). The radio frame bits include 4 bits. The radio frame bits may be configured by 4 bits of a 10-bit radio frame indicator. For example, the radio frame indicator may be used to identify at least radio frames with indexes 0 to 1023.

[0121] The half radio frame bit is used to indicate whether the PBCH is transmitted in the first five subframes or the last five subframes of a radio frame in which the PBCH is transmitted. Here, a half radio frame may be configured to include five subframes. Alternatively, a half radio frame may be configured to include the first five subframes of ten subframes included in a radio frame. Alternatively, a half radio frame may be configured to include the last five subframes of ten subframes included in a radio frame.

[0122] The SS / PBCH block index bits are used to indicate the SS / PBCH block index. The SS / PBCH block index bits include 3 bits. The SS / PBCH block index bits may be configured by 3 bits of a 6-bit SS / PBCH block index indicator. The SS / PBCH block index indicator may be used at least to identify SS / PBCH blocks from index 0 to index 63.

[0123] The subcarrier offset bit is used to indicate a subcarrier offset, which may be used to indicate the difference between the first subcarrier to which the PBCH is mapped and the first subcarrier to which the control resource set with index 0 is mapped.

[0124] The PDCCH may be transmitted to convey downlink control information (DCI). The downlink control information may be arranged in the PDCCH. The terminal device 1 may receive the PDCCH in which the downlink control information is arranged. The base station device 3 may transmit the PDCCH in which the downlink control information is arranged.

[0125] The downlink control information may be transmitted with a DCI format. The DCI format may be interpreted as a format of the downlink control information. The DCI format may also be interpreted as a set of downlink control information set to a certain format of the downlink control information.

[0126] DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats. The uplink DCI format is a general term for DCI format 0_0 and DCI format 0_1. The downlink DCI format is a general term for DCI format 1_0 and DCI format 1_1.

[0127] DCI format 0_0 is used at least for scheduling a PUSCH allocated to a certain cell. DCI format 0_0 includes at least some or all of fields 1A to 1E. 1A) Identifier field for DCI formats 1B) Frequency domain resource assignment field 1C) Time domain resource assignment field 1D) Frequency hopping flag field 1E) MCS field (Modulation and Coding Scheme field)

[0128] The DCI format identification field may indicate whether the DCI format including the DCI format identification field is an uplink DCI format or a downlink DCI format. That is, the DCI format identification field may be included in both the uplink DCI format and the downlink DCI format. Here, the DCI format identification field included in DCI format 0_0 may indicate 0.

[0129] The frequency domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of frequency resources for the PUSCH.

[0130] The time domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of time resources for the PUSCH.

[0131] The frequency hopping flag field may be used to indicate whether frequency hopping is applied to the PUSCH.

[0132] The MCS field included in DCI format 0_0 may be used to indicate at least one or both of a modulation scheme and a target coding rate for the PUSCH. The target coding rate may be a target coding rate for a transport block assigned to the PUSCH. The size of the transport block (TBS) assigned to the PUSCH may be determined based on one or both of the target coding rate and the modulation scheme for the PUSCH.

[0133] DCI format 0_0 may not include fields used for CSI requests (CSI requests).

[0134] DCI format 0_0 may not include a carrier indicator field. That is, the serving cell to which the uplink component carrier on which the PUSCH scheduled by DCI format 0_0 is allocated may be the same as the serving cell of the uplink component carrier on which the PDCCH including DCI format 0_0 is allocated. By detecting DCI format 0_0 on a downlink component carrier of a serving cell, the terminal device 1 may recognize that the PUSCH scheduled by DCI format 0_0 is allocated on the uplink component carrier of the serving cell.

[0135] DCI format 0_0 may not include a BWP field. Here, DCI format 0_0 may be a DCI format for scheduling a PUSCH without changing the active uplink BWP. The terminal device 1 may recognize that the PUSCH will be transmitted without switching the active uplink BWP based on detecting DCI format 0_0 used for scheduling the PUSCH.

[0136] DCI format 0_1 ​​is used at least for scheduling a PUSCH allocated to a certain cell. DCI format 0_1 ​​includes at least some or all of fields 2A to 2H. 2A) DCI format specific field, 2B) Frequency domain resource allocation field, 2C) Uplink time domain resource allocation field, 2D) Frequency hopping flag field, 2E) MCS field, 2F) CSI request field, 2G) BWP field, and 2H) Carrier indicator field.

[0137] The DCI format specific field included in DCI format 0_1 ​​may indicate 0.

[0138] The frequency domain resource allocation field included in DCI format 0_1 ​​may be used to indicate the allocation of frequency resources for the PUSCH.

[0139] The time domain resource allocation field included in DCI format 0_1 ​​may be used to indicate the allocation of time resources for the PUSCH.

[0140] The MCS field included in DCI format 0_1 ​​may be used to indicate at least part or all of the modulation scheme and / or target coding rate for the PUSCH.

[0141] The BWP field of DCI format 0_1 ​​may be used to indicate the uplink BWP in which the PUSCH scheduled by the DCI format 0_1 ​​is arranged. That is, the DCI format 0_1 ​​may involve a change of the active uplink BWP. The terminal device 1 may recognize the uplink BWP in which the PUSCH is arranged based on detecting the DCI format 0_1 ​​used for scheduling the PUSCH.

[0142] The DCI format 0_1 ​​that does not include a BWP field may be a DCI format that schedules a PUSCH without changing the active uplink BWP. The terminal device 1 may recognize that the PUSCH will be transmitted without switching the active uplink BWP based on detecting the DCI format D0_1 that is DCI format 0_1 ​​used for scheduling a PUSCH and does not include a BWP field.

[0143] If the DCI format 0_1 ​​includes a BWP field but the terminal device 1 does not support the BWP switching function using the DCI format 0_1, the BWP field may be ignored by the terminal device 1. In other words, a terminal device 1 that does not support the BWP switching function may recognize that the PUSCH will be transmitted without switching the active uplink BWP based on detecting DCI format 0_1 ​​that is used for PUSCH scheduling and includes the BWP field. Here, if the terminal device 1 supports the BWP switching function, it may report that "the terminal device 1 supports the BWP switching function" in the capability information reporting procedure of the RRC layer.

[0144] The CSI request field is used to indicate the reporting of CSI.

[0145] When DCI format 0_1 ​​includes a carrier indicator field, the carrier indicator field may be used to indicate an uplink component carrier on which a PUSCH is allocated. When DCI format 0_1 ​​does not include a carrier indicator field, the uplink component carrier on which a PUSCH is allocated may be the same as an uplink component carrier on which a PDCCH including DCI format 0_1 ​​used for scheduling the PUSCH is allocated. When the number of uplink component carriers configured in the terminal device 1 in a certain serving cell group is two or more (when uplink carrier aggregation is operated in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 0_1 ​​used for scheduling a PUSCH allocated to the certain serving cell group may be one bit or more (e.g., three bits). When the number of uplink component carriers configured for a terminal device 1 in a certain serving cell group is 1 (when uplink carrier aggregation is not operated in a certain serving cell group), the number of bits in the carrier indicator field included in DCI format 0_1 ​​used for scheduling the PUSH placed in the certain serving cell group may be 0 bits (or the carrier indicator field may not be included in DCI format 0_1 ​​used for scheduling the PUSH placed in the certain serving cell group).

[0146] DCI format 1_0 is used at least for scheduling PDSCHs allocated to a certain cell. DCI format 1_0 includes at least some or all of 3A to 3F. 3A) DCI format specific field, 3B) Frequency domain resource allocation field, 3C) Time domain resource allocation field, 3D) MCS field, 3E) PDSCH to HARQ feedback timing indicator field, and 3F) PUCCH resource indicator field.

[0147] The DCI format specific field included in DCI format 1_0 may indicate 1.

[0148] The frequency domain resource allocation field included in DCI format 1_0 may be used at least to indicate the allocation of frequency resources for the PDSCH.

[0149] The time domain resource allocation field included in DCI format 1_0 may be used at least to indicate the allocation of time resources for the PDSCH.

[0150] The MCS field included in DCI format 1_0 may be used to indicate at least one or both of a modulation scheme and a target coding rate for the PDSCH. The target coding rate may be a target coding rate for a transport block assigned to the PDSCH. The size of the transport block (TBS) assigned to the PDSCH may be determined based on one or both of the target coding rate and the modulation scheme for the PDSCH.

[0151] The PDSCH_HARQ feedback timing indication field may be used to indicate the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH.

[0152] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set. A PUCCH resource set may include one or more PUCCH resources.

[0153] DCI format 1_0 may not include a carrier indicator field. That is, the downlink component carrier on which the PDSCH scheduled by DCI format 1_0 is allocated may be the same as the downlink component carrier on which the PDCCH including DCI format 1_0 is allocated. By detecting DCI format 1_0 on a certain downlink component carrier, the terminal device 1 may recognize that the PDSCH scheduled by DCI format 1_0 is allocated to the downlink component carrier.

[0154] DCI format 1_0 may not include a BWP field. Here, DCI format 1_0 may be a DCI format for scheduling a PDSCH without changing an active downlink BWP. Based on detecting DCI format 1_0 used for scheduling a PDSCH, the terminal device 1 may recognize that it will receive the PDSCH without switching the active downlink BWP.

[0155] DCI format 1_1 is used at least for scheduling PDSCHs allocated to a certain cell. DCI format 1_1 includes at least some or all of 4A to 4I: 4A) DCI format specific field, 4B) frequency domain resource allocation field, 4C) time domain resource allocation field, 4E) MCS field, 4F) PDSCH_HARQ feedback timing indication field, 4G) PUCCH resource indication field, 4H) BWP field, and 4I) carrier indicator field.

[0156] The DCI format specific field included in DCI format 1_1 may indicate 1.

[0157] The frequency domain resource allocation field included in DCI format 1_1 may be used at least to indicate the allocation of frequency resources for the PDSCH.

[0158] The time domain resource allocation field included in DCI format 1_1 may be used at least to indicate the allocation of time resources for the PDSCH.

[0159] The MCS field included in DCI format 1_1 may be used to indicate at least one or both of the modulation scheme and the target coding rate for the PDSCH.

[0160] If DCI format 1_1 includes a PDSCH_HARQ feedback timing indication field, the PDSCH_HARQ feedback timing indication field may be used at least to indicate an offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH. If DCI format 1_1 does not include a PDSCH_HARQ feedback timing indication field, the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH may be specified by a higher layer parameter.

[0161] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set.

[0162] The BWP field of DCI format 1_1 may be used to indicate the downlink BWP in which the PDSCH scheduled by DCI format 1_1 is arranged. That is, DCI format 1_1 may involve a change in the active downlink BWP. The terminal device 1 may recognize the downlink BWP in which the PUSCH is arranged based on detecting DCI format 1_1 used for scheduling the PDSCH.

[0163] The DCI format 1_1 that does not include a BWP field may be a DCI format that schedules the PDSCH without changing the active downlink BWP. The terminal device 1 may recognize that it will receive the PDSCH without switching the active downlink BWP based on detecting the DCI format 1_1 that is used for scheduling the PDSCH and does not include a BWP field.

[0164] If DCI format 1_1 includes a BWP field but the terminal device 1 does not support the BWP switching function using DCI format 1_1, the BWP field may be ignored by the terminal device 1. In other words, a terminal device 1 that does not support the BWP switching function may recognize that it will receive the PDSCH without switching the active downlink BWP based on detecting DCI format 1_1 that is used for PDSCH scheduling and includes a BWP field. Here, if the terminal device 1 supports the BWP switching function, it may report that "the terminal device 1 supports the BWP switching function" in the capability information reporting procedure of the RRC layer.

[0165] When DCI format 1_1 includes a carrier indicator field, the carrier indicator field may be used to indicate a downlink component carrier on which a PDSCH is allocated. When DCI format 1_1 does not include a carrier indicator field, the downlink component carrier on which a PDSCH is allocated may be the same as a downlink component carrier on which a PDCCH including DCI format 1_1 used for scheduling the PDSCH is allocated. When the number of downlink component carriers configured for the terminal device 1 in a certain serving cell group is two or more (when downlink carrier aggregation is operated in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 1_1 used for scheduling the PDSCH allocated to the certain serving cell group may be one bit or more (for example, three bits). When the number of downlink component carriers configured for a terminal device 1 in a certain serving cell group is 1 (when downlink carrier aggregation is not operated in a certain serving cell group), the number of bits in the carrier indicator field included in DCI format 1_1 used for scheduling the PDSCH placed in the certain serving cell group may be 0 bits (or the carrier indicator field may not be included in DCI format 1_1 used for scheduling the PDSCH placed in the certain serving cell group).

[0166] The PDSCH may be transmitted to transmit a transport block. The PDSCH may be used to transmit a transport block delivered by the DL-SCH. The PDSCH may be used to transmit a transport block. A transport block may be allocated to the PDSCH. A transport block corresponding to the DL-SCH may be allocated to the PDSCH. The base station device 3 may transmit the PDSCH. The terminal device 1 may receive the PDSCH.

[0167] The downlink physical signal may correspond to a set of resource elements. The downlink physical signal does not need to carry information generated in a higher layer. The downlink physical signal may be a physical signal used in a downlink component carrier. The downlink physical signal may be transmitted by a base station device 3. The downlink physical signal may be transmitted by a terminal device 1. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following downlink physical signals may be used: Synchronization signal (SS) DL DMRS (DownLink Demodulation Reference Signal) CSI-RS (Channel State Information-Reference Signal) DL PTRS (DownLink Phase Tracking Reference Signal)

[0168] The synchronization signal may be used by the terminal device 1 to synchronize one or both of the frequency domain and the time domain of the downlink. The synchronization signal is a general term for a PSS (Primary Synchronization Signal) and an SSS (Secondary Synchronization Signal).

[0169] FIG. 7 is a diagram showing an example of the configuration of an SS / PBCH block according to one aspect of this embodiment. In FIG. 7, the horizontal axis is the time axis (OFDM symbol index l ｓｙｍ ), and the vertical axis represents the frequency domain. Blocks with diagonal lines slanting upward to the right represent a set of resource elements for PSS. Blocks with solid black represent a set of resource elements for SSS. Blocks with diagonal lines slanting upward to the left represent a set of resource elements for PBCH and DMRS for the PBCH (DMRS related to the PBCH, DMRS included in the PBCH, and DMRS corresponding to the PBCH).

[0170] As shown in Figure 7, the SS / PBCH block includes a PSS, SSS, and PBCH. The SS / PBCH block includes four consecutive OFDM symbols. The SS / PBCH block includes 240 subcarriers. The PSS is allocated to the 57th to 183rd subcarriers in the first OFDM symbol. The SSS is allocated to the 57th to 183rd subcarriers in the third OFDM symbol. The 1st to 56th subcarriers in the first OFDM symbol may be set to zero. The 184th to 240th subcarriers in the first OFDM symbol may be set to zero. The 49th to 56th subcarriers in the third OFDM symbol may be set to zero. The 184th to 192nd subcarriers in the third OFDM symbol may be set to zero. The PBCH is allocated to the 1st to 240th subcarriers of the second OFDM symbol, and to subcarriers where a DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 48th subcarriers of the third OFDM symbol, and to subcarriers where a DMRS for the PBCH is not allocated. The PBCH is allocated to the 193rd to 240th subcarriers of the third OFDM symbol, and to subcarriers where a DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 240th subcarriers of the fourth OFDM symbol, and to subcarriers where a DMRS for the PBCH is not allocated.

[0171] The antenna ports for PSS, SSS, PBCH, and DMRS for PBCH may be the same.

[0172] The PBCH on which the PBCH symbol is transmitted at a certain antenna port may be estimated by the DMRS for the PBCH that is placed in the slot to which the PBCH is mapped and that is included in the SS / PBCH block to which the PBCH is included.

[0173] DL DMRS is a general term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.

[0174] The set of antenna ports for DMRS for a PDSCH (DMRS associated with a PDSCH, DMRS included in a PDSCH, DMRS corresponding to a PDSCH) may be given based on the set of antenna ports for the PDSCH, i.e., the set of antenna ports for DMRS for a PDSCH may be the same as the set of antenna ports for the PDSCH.

[0175] The transmission of the PDSCH and the transmission of the DMRS for the PDSCH may be indicated (or scheduled) by one DCI format. The PDSCH and the DMRS for the PDSCH may be collectively referred to as the PDSCH. Transmitting the PDSCH may be transmitting the PDSCH and the DMRS for the PDSCH.

[0176] The propagation path of a PDSCH may be estimated from a DMRS for the PDSCH. If a set of resource elements on which a certain PDSCH symbol is transmitted and a set of resource elements on which a DMRS symbol for the certain PDSCH is transmitted are included in the same precoding resource group (PRG), the PDSCH on which the PDSCH symbol is transmitted at a certain antenna port may be estimated by the DMRS for the PDSCH.

[0177] The antenna port for DMRS for PDCCH (DMRS associated with PDCCH, DMRS included in PDCCH, DMRS corresponding to PDCCH) may be the same as the antenna port for PDCCH.

[0178] A PDCCH may be estimated from a DMRS for the PDCCH. That is, the propagation path of the PDCCH may be estimated from the DMRS for the PDCCH. If the same precoder is applied (or assumed to be applied) to a set of resource elements on which a certain PDCCH symbol is transmitted and a set of resource elements on which a DMRS symbol for the PDCCH is transmitted, the PDCCH on which the PDCCH symbol for a certain antenna port is transmitted may be estimated by the DMRS for the PDCCH.

[0179] The BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels that define the relationship between physical layer channels and MAC layer channels (also called logical channels).

[0180] The BCH of the transport layer is mapped to the PBCH of the physical layer. That is, transport blocks carried on the BCH of the transport layer are delivered to the PBCH of the physical layer. The UL-SCH of the transport layer is mapped to the PUSCH of the physical layer. That is, transport blocks carried on the UL-SCH of the transport layer are delivered to the PUSCH of the physical layer. The DL-SCH of the transport layer is mapped to the PDSCH of the physical layer. That is, transport blocks carried on the DL-SCH of the transport layer are delivered to the PDSCH of the physical layer.

[0181] One UL-SCH and one DL-SCH may be provided for each serving cell. The BCH may be provided for the PCell. The BCH may not be provided for the PSCell or SCell.

[0182] In the MAC layer, HARQ (Hybrid Automatic Repeat reQuest) control is performed for each transport block.

[0183] The BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel) are logical channels. For example, the BCCH is a channel of the RRC layer used for transmitting an MIB or system information. The CCCH (Common Control CHannel) may be used for transmitting an RRC message common to multiple terminal devices 1. Here, the CCCH may be used, for example, for terminal devices 1 that are not RRC-connected. The DCCH (Dedicated Control CHannel) may be used at least for transmitting an RRC message dedicated to the terminal device 1. Here, the DCCH may be used, for example, for terminal devices 1 that are RRC-connected.

[0184] The logical channel BCCH is mapped to the BCH or DL-SCH of the transport layer. For example, a transport block containing MIB information is delivered to the BCH of the transport layer. A transport block containing system information other than MIB is delivered to the DL-SCH of the transport layer. The CCCH is mapped to the DL-SCH or UL-SCH. That is, a transport block mapped to the CCCH is delivered to the DL-SCH or UL-SCH. The DCCH is mapped to the DL-SCH or UL-SCH. That is, a transport block mapped to the DCCH is delivered to the DL-SCH or UL-SCH.

[0185] The RRC message includes one or more parameters managed in the RRC layer. Here, the parameters managed in the RRC layer are also referred to as RRC parameters. For example, the RRC message may include an MIB. The RRC message may also include system information. The RRC message may also include a message corresponding to the CCCH. The RRC message may also include a message corresponding to the DCCH. An RRC message including a message corresponding to the DCCH is also referred to as a dedicated RRC message.

[0186] The upper layer parameters (upper layer parameters) are RRC parameters or parameters included in a Medium Access Control (MAC) CE (Control Element). That is, the upper layer parameters are a collective term for the MIB, system information, a message corresponding to the CCCH, a message corresponding to the DCCH, and parameters included in the MAC CE. The parameters included in the MAC CE are transmitted by a MAC CE (Control Element) command.

[0187] The procedures performed by the terminal device 1 include at least some or all of the following steps 5A to 5C: 5A) Cell search, 5B) Random access, and 5C) Data communication.

[0188] The cell search is a procedure used by the terminal device 1 to synchronize with a certain cell in the time domain and the frequency domain and detect a physical cell identity. That is, the terminal device 1 may perform the cell search to synchronize with a certain cell in the time domain and the frequency domain and detect the physical cell ID.

[0189] The PSS sequence is based at least on the physical cell ID. The SSS sequence is based at least on the physical cell ID.

[0190] The SS / PBCH block candidates indicate resources on which transmission of the SS / PBCH blocks is permitted (possibly, reserved, configured, defined, possible).

[0191] A set of SS / PBCH block candidates in a half radio frame is also called an SS burst set. The SS burst set is also called a transmission window, an SS transmission window, or a Discovery Reference Signal (DRS) transmission window. The SS burst set is a general term that includes at least the first SS burst set and the second SS burst set.

[0192] The base station device 3 transmits SS / PBCH blocks of one or more indexes at a predetermined period. The terminal device 1 may detect at least one SS / PBCH block of the SS / PBCH blocks of the one or more indexes and attempt to decode the PBCH included in the SS / PBCH block.

[0193] Random access is a procedure that includes at least some or all of message 1, message 2, message 3, and message 4.

[0194] Message 1 is a procedure for transmitting a PRACH by a terminal device 1. The terminal device 1 transmits a PRACH in one PRACH opportunity selected from one or more PRACH opportunities based at least on an index of an SS / PBCH block candidate detected based on a cell search. Each PRACH opportunity is defined based at least on resources in the time domain and the frequency domain.

[0195] The terminal device 1 transmits one random access preamble selected from among the PRACH opportunities corresponding to the index of the SS / PBCH block candidate in which the SS / PBCH block is detected.

[0196] Message 2 is a procedure in which the terminal device 1 attempts to detect DCI format 1_0 with a CRC (Cyclic Redundancy Check) scrambled with an RA-RNTI (Random Access - Radio Network Temporary Identifier). The terminal device 1 attempts to detect a PDCCH including this DCI format in a control resource set provided based on an MIB included in a PBCH included in an SS / PBCH block detected based on a cell search and in resources indicated based on the setting of a search space set. Message 2 is also referred to as a random access response.

[0197] Message 3 is a procedure for transmitting a PUSCH scheduled by a random access response grant included in DCI format 1_0 detected by the procedure of message 2. Here, the random access response grant is indicated by a MAC CE included in a PDSCH scheduled by DCI format 1_0.

[0198] The PUSCH scheduled based on the random access response grant is either a message 3 PUSCH or a PUSCH. The message 3 PUSCH includes a contention resolution identifier (MAC CE). The contention resolution identifier MAC CE includes the contention resolution ID.

[0199] Message 3 PUSCH retransmissions are scheduled by DCI format 0_0 with CRC scrambled based on TC-RNTI (Temporary Cell - Radio Network Temporary Identifier).

[0200] Message 4 is a procedure for attempting to detect DCI format 1_0 with a CRC scrambled based on either a Cell-Radio Network Temporary Identifier (C-RNTI) or a TC-RNTI. The terminal device 1 receives a PDSCH scheduled based on the DCI format 1_0. The PDSCH may include a collision resolution ID.

[0201] Data communication is a general term for downlink communication and uplink communication.

[0202] In data communication, the terminal device 1 attempts to detect the PDCCH in resources identified based on the control resource set and the search space set (monitors the PDCCH, monitors the PDCCH).

[0203] A control resource set is a set of resources consisting of a predetermined number of resource blocks and a predetermined number of OFDM symbols. In the frequency domain, the control resource set may be composed of contiguous resources (non-interleaved mapping) or distributed resources (interleaver mapping).

[0204] The set of resource blocks constituting the control resource set may be indicated by a higher layer parameter, and the number of OFDM symbols constituting the control resource set may be indicated by a higher layer parameter.

[0205] The terminal device 1 attempts to detect a PDCCH in a search space set. Here, attempting to detect a PDCCH in the search space set may be attempting to detect a PDCCH candidate in the search space set, may be attempting to detect a DCI format in the search space set, may be attempting to detect a PDCCH in a control resource set, may be attempting to detect a PDCCH candidate in the control resource set, or may be attempting to detect a DCI format in the control resource set.

[0206] The search space set is defined as a set of PDCCH candidates. The search space set may be a Common Search Space (CSS) set or a UE-specific Search Space (USS) set. The terminal device 1 attempts to detect PDCCH candidates in some or all of a Type 0 PDCCH common search space set, a Type 0a PDCCH common search space set, a Type 1 PDCCH common search space set, a Type 2 PDCCH common search space set, a Type 3 PDCCH common search space set, and / or a UE-specific search space set.

[0207] The Type 0 PDCCH common search space set may be used as the common search space set with index 0. The Type 0 PDCCH common search space set may be the common search space set with index 0.

[0208] The CSS set is a collective term for a Type 0 PDCCH common search space set, a Type 0a PDCCH common search space set, a Type 1 PDCCH common search space set, a Type 2 PDCCH common search space set, and a Type 3 PDCCH common search space set. The CSS set is also called a UE-specific PDCCH search space set.

[0209] A search space set is associated with (included in, corresponds to) a control resource set, and the index of the control resource set associated with the search space set may be indicated by a higher layer parameter.

[0210] For a given search space set, some or all of 6A to 6C may be indicated by higher layer parameters: 6A) PDCCH monitoring periodicity, 6B) PDCCH monitoring pattern within a slot, and 6C) PDCCH monitoring offset.

[0211] A monitoring occasion for a search space set may correspond to an OFDM symbol in which a first OFDM symbol of a control resource set associated with the search space set is located. A monitoring occasion for a search space set may correspond to resources of the control resource set starting from the first OFDM symbol of the control resource set associated with the search space set. The monitoring occasion for the search space set is given based on at least some or all of a PDCCH monitoring interval, a PDCCH monitoring pattern within a slot, and a PDCCH monitoring offset.

[0212] 8 is a diagram illustrating an example of a monitoring opportunity for a search area set according to one aspect of the present embodiment. In FIG. 8, a search area set 91 and a search area set 92 are set in a primary cell 301, a search area set 93 is set in a secondary cell 302, and a search area set 94 is set in a secondary cell 303.

[0213] In Figure 8, the solid white blocks in primary cell 301 indicate search area set 91, the solid black blocks in primary cell 301 indicate search area set 92, the blocks in secondary cell 302 indicate search area set 93, and the blocks in secondary cell 303 indicate search area set 94.

[0214] The monitoring interval of search area set 91 is set to 1 slot, the monitoring offset of search area set 91 is set to 0 slot, and the monitoring pattern of search area set 91 is set to [1,0,0,0,0,0,0,1,0,0,0,0,0,0]. That is, the monitoring opportunities for search area set 91 correspond to the first OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each slot.

[0215] The monitoring interval of search area set 92 is set to 2 slots, the monitoring offset of search area set 92 is set to 0 slots, and the monitoring pattern of search area set 92 is set to [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is, the monitoring opportunity for search area set 92 corresponds to the first OFDM symbol (OFDM symbol #0) in each of the even slots.

[0216] The monitoring interval of search area set 93 is set to 2 slots, the monitoring offset of search area set 93 is set to 0 slots, and the monitoring pattern of search area set 93 is set to [0,0,0,0,0,0,0,1,0,0,0,0,0,0]. That is, the monitoring opportunity for search area set 93 corresponds to the 8th OFDM symbol (OFDM symbol #7) in each of the even slots.

[0217] The monitoring interval of search area set 94 is set to 2 slots, the monitoring offset of search area set 94 is set to 1 slot, and the monitoring pattern of search area set 94 is set to [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is, the monitoring opportunity for search area set 94 corresponds to the first OFDM symbol (OFDM symbol #0) in each odd slot.

[0218] The Type 0 PDCCH common search space set may be used at least for DCI formats with a Cyclic Redundancy Check (CRC) sequence scrambled by a System Information-Radio Network Temporary Identifier (SI-RNTI).

[0219] The Type 0a PDCCH common search space set may be used at least for DCI formats with a CRC (Cyclic Redundancy Check) sequence scrambled by a SI-RNTI (System Information-Radio Network Temporary Identifier).

[0220] The Type 1 PDCCH common search space set may be used at least for DCI formats with a CRC sequence scrambled by a Random Access-Radio Network Temporary Identifier (RA-RNTI) and / or a Temporary Cell-Radio Network Temporary Identifier (TC-RNTI).

[0221] A Type 2 PDCCH common search space set may be used for a DCI format with a CRC sequence scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI).

[0222] A Type 3 PDCCH common search space set may be used for a DCI format with a CRC sequence scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI).

[0223] The UE-specific PDCCH search space set may be used at least for DCI formats with CRC sequences scrambled by the C-RNTI.

[0224] In downlink communication, the terminal device 1 detects a downlink DCI format. The detected downlink DCI format is used at least for PDSCH resource allocation. The detected downlink DCI format is also referred to as a downlink assignment. The terminal device 1 attempts to receive the PDSCH. Based on the PUCCH resource indicated based on the detected downlink DCI format, the terminal device 1 reports a HARQ-ACK corresponding to the PDSCH (a HARQ-ACK corresponding to a transport block included in the PDSCH) to the base station device 3.

[0225] In uplink communication, the terminal device 1 detects an uplink DCI format. The detected DCI format is used at least for PUSCH resource allocation. The detected uplink DCI format is also called an uplink grant. The terminal device 1 transmits the PUSCH.

[0226] In configured scheduling (configured grant), an uplink grant for scheduling a PUSCH is configured for each transmission period of the PUSCH. When a PUSCH is scheduled by an uplink DCI format, some or all of the information indicated by the uplink DCI format may be indicated by the uplink grant configured in the case of configured scheduling.

[0227] The terminal device 1 may be provided with one or more PUCCH resources by a higher layer. The terminal device 1 may be assigned one or more PUCCH resources for one PUCCH transmission. The PUCCH resource may be determined based on at least some or all of elements P1 to P5. That is, some or all of elements P1 to P5 may be configured for the PUCCH resource. Also, some or all of elements P1 to P5 may be configured for each PUCCH resource. For example, an nth set may be configured for an nth PUCCH resource. The nth set may be some or all of elements P1 to P5, where n may be an integer greater than or equal to 1. Configuring a certain higher layer parameter for a PUCCH resource may mean that the certain higher layer parameter configures the PUCCH resource, or that the certain higher layer parameter characterizes the PUCCH resource. The PUCCH resource may be set by some or all of the upper layer parameter PUCCH-Resource, the upper layer parameter PUCCH-ResourceExt-r16, the upper layer parameter PUCCH-ResourceExt-r17, and the upper layer parameter PUCCH-ResourceExt. P1) PUCCH format index P2) PUCCH first OFDM symbol index P3) PUCCH OFDM symbol number P4) PUCCH first resource block index P5) PUCCH first resource block number M ＰＵＣＣＨ ＲＢ

[0228] The PUCCH resource may be indicated based at least on a PUCCH resource indication field in a DCI format indicating a certain PUCCH transmission. The certain PUCCH transmission may correspond to the PUCCH resource. Furthermore, indicating a PUCCH resource by the PUCCH resource indication field in a DCI format may mean indicating a PUCCH transmission corresponding to the PUCCH resource by the DCI format. Corresponding a certain PUCCH transmission to a PUCCH resource may mean providing at least a resource required for the certain PUCCH transmission. For example, the resource may be time. Furthermore, the resource may be a frequency or a frequency band.

[0229] Configuring one higher layer parameter for a PUCCH resource may mean configuring the one higher layer parameter for PUCCH-Resource. Also, configuring one higher layer parameter for a PUCCH resource may mean configuring the one higher layer parameter for PUCCH-ResourceExt-r16. Also, configuring one higher layer parameter for a PUCCH resource may mean configuring the one higher layer parameter for PUCCH-ResourceExt-r17. Configuring one higher layer parameter for a PUCCH resource may mean configuring the one higher layer parameter for each PUCCH resource.

[0230] The terminal device 1 may be configured with one PUCCH resource set by the higher layer parameter pucch-ResourceCommon, and the one PUCCH resource set may include 16 PUCCH resources.

[0231] The terminal device 1 may be configured with up to four PUCCH resource sets by the higher layer parameter pucch-ResourceSet. Each PUCCH resource set may include one or more PUCCH resources. Each PUCCH resource set may be associated with a PUCCH resource set index. The PUCCH resource set index may be given by the higher layer parameter pucch-ResourceSetId. Each PUCCH resource set may be associated with a maximum number of UCI information bits. The maximum number of UCI information bits may be configured for each PUCCH resource set by the higher layer parameter maxPayloadSize. When the terminal device 1 transmits UCI using PUCCH resources in a certain PUCCH resource set, the number of information bits of the UCI may not exceed the maximum number of UCI information bits configured for the certain PUCCH resource set.

[0232] The PUCCH format index may indicate any value from PUCCH format 0 to PUCCH format 4. The PUCCH format index may be indicated by the higher layer parameter format. For example, if format is format 0 (or PUCCH-format 0), the PUCCH may correspond to PUCCH format 0. If format is format 1 (or PUCCH-format 1), the PUCCH may correspond to PUCCH format 1. If format is format 2 (or PUCCH-format 2), the PUCCH may correspond to PUCCH format 2. If format is format 3 (or PUCCH-format 3), the PUCCH may correspond to PUCCH format 3. When the format is format 4 (or PUCCH-format 4), the PUCCH may be compatible with PUCCH format 4.

[0233] For example, "corresponding to a certain PUCCH format" may mean that the certain PUCCH is configured by the certain PUCCH format. Furthermore, "corresponding to a certain PUCCH format" may mean that the certain PUCCH is generated based on the certain PUCCH format. Here, the PUCCH format may include at least some or all of the PUCCH scrambling method, PUCCH modulation scheme configuration, PUCCH time domain resource configuration, PUCCH frequency domain configuration, and DMRS configuration for the PUCCH. Configuring certain higher layer parameters for a PUCCH format may mean that the certain higher layer parameters configure the PUCCH format, or that the certain higher layer parameters characterize the PUCCH format. Furthermore, configuring certain higher layer parameters for each PUCCH format may mean that the certain higher layer parameter is configured for the nth PUCCH format, where n may be an integer equal to or greater than 1.

[0234] The index of the first OFDM symbol of the PUCCH may be the index of the first OFDM symbol to which the PUCCH is mapped. The index of the first OFDM symbol of the PUCCH may be determined by a higher layer parameter startingSymbolIndex corresponding to the PUCCH format selected by the PUCCH format index.

[0235] The number of OFDM symbols for the PUCCH may be the number of OFDM symbols to which the PUCCH is mapped. The number of OFDM symbols for the PUCCH may be determined by a higher layer parameter nrofsymbols corresponding to the PUCCH format selected by the PUCCH format index.

[0236] Number of PUCCH resource blocks M ＰＵＣＣＨ ＲＢ may be the maximum number of resource blocks to which the PUCCH is mapped. ＰＵＣＣＨ ＲＢmay be determined by the higher layer parameter nrolfPRBs corresponding to the PUCCH format selected by the PUCCH format index.

[0237] Number of PUCCH resource blocks M ＰＵＣＣＨ ＲＢ，ｍｉｎ may be the number of resource blocks to which the PUCCH is mapped. ＰＵＣＣＨ ＲＢ，ｍｉｎ is the number of PUCCH resource blocks M ＰＵＣＣＨ ＲＢ or the number of PUCCH resource blocks M ＰＵＣＣＨ ＲＢ It may be less than.

[0238] Number of PUCCH resource blocks M ＰＵＣＣＨ ＲＢ，ｍｉｎ may be determined based at least on Equation 1 and / or Equation 2 when the PUCCH format for the PUCCH is PUCCH format 2 or PUCCH format 3 and the PUCCH includes at least one or both of HARQ-ACK and SR. ＰＵＣＣＨ ＲＢ，ｍｉｎ is the number of PUCCH resource blocks M ＰＵＣＣＨ ＲＢ The number of PRBs of the PUCCH may be determined based at least on M being greater than 1 and based at least on both Equation 1 and Equation 2. ＰＵＣＣＨ ＲＢ，ｍｉｎ The position of the PRB where the PUCCH starts may be determined based at least on an upper layer parameter StartingPRB or an upper layer parameter SecondHopPRB. The PRB indicated by the upper layer parameter StartingPRB may be referred to as the first PRB, and the PRB indicated by the upper layer parameter SecondHopPRB may be referred to as the second PRB.

[0239] N ＵＣＩ may correspond to the number of uplink control information bits.

[0240] N ＲＢ ＳＣ，ｃｔｒｌ is the number of subcarriers per resource block N ＲＢ ＳＣ N for PUCCH format 2 ＲＢ ＳＣ，ｃｔｒｌ is N ＲＢ ＳＣ，ｃｔｒｌ -4, or (N ＲＢ ＳＣ，ｃｔｒｌ -4) / N ＰＵＣＣＨ，２ ＳＦ N for PUCCH format 3 ＲＢ ＳＣ，ｃｔｒｌ is N ＲＢ ＳＣ，ｃｔｒｌ , or N ＲＢ ＳＣ，ｃｔｒｌ / N ＰＵＣＣＨ，３ ＳＦ It may be given by: N ＰＵＣＣＨ，２ ＳＦ may be a value used for spreading in PUCCH2, and N ＰＵＣＣＨ，３ ＳＦ may be a value used for block-wise spreading in PUCCH3.

[0241] N ＰＵＣＣＨ ｓｙｍｂ－ＵＣＩ may correspond to the number of OFDM symbols to which the PUCCH is mapped. ＰＵＣＣＨ ｓｙｍｂ－ＵＣＩ may be given by nrofSymbols in the higher layer parameter PUCCH-fromat2. ＰＵＣＣＨ ｓｙｍｂ－ＵＣＩ may be a value obtained by subtracting the number of OFDM symbols used in DMRS transmission for PUCCH format 3 from the value given by nrofSymbols in the higher layer parameter PUCCH-format3. ＰＵＣＣＨ ｓｙｍｂ－ＵＣＩmay be a value obtained by subtracting the number of OFDM symbols used in DMRS transmission for PUCCH format 4 from the value given by nrofSymbols in the higher layer parameter PUCCH-format4.

[0242] Q ｍ may correspond to the modulation order of the PUCCH.

[0243] r may correspond to the maximum coding rate of the PUCCH (or simply referred to as the coding rate). r may be determined by the higher layer parameter maxCodeRate for PUCCH format 2, 3, or 4. In addition, maxCodeRate may be configured for each PUCCH format.

[0244] In PUCCH format 1, 3, or 4, the number of slots N for PUCCH transmission repetition ｒｅｐｅａｔ ＰＵＣＣＨ In addition, in PUCCH format 0 or 2, the number of slots for PUCCH transmission repetition, N ｒｅｐｅａｔ ＰＵＣＣＨ may be set. ｒｅｐｅａｔ ＰＵＣＣＨ may be determined by the higher layer parameter NrofSlots for the PUCCH format. That is, NrofSlots may be a higher layer parameter indicating the number of repetitions for the PUCCH format corresponding to the PUCCH transmission. Also, NrofSlots may be set for each PUCCH format. The value of NrofSlots may be 2, 4, or 8. For example, when the value of NrofSlots is 2, NrofSlots may be set to 1. ｒｅｐｅａｔ ＰＵＣＣＨ may be 2. If NrofSlots is not configured for the PUCCH format, N ｒｅｐｅａｔ ＰＵＣＣＨ may be 1.

[0245] In the PUCCH resource, the number of slots N for PUCCH transmission repetition ｒｅｐｅａｔ ＰＵＣＣＨ may be set. ｒｅｐｅａｔ ＰＵＣＣＨmay be determined by a first higher layer parameter for the PUCCH resource. The first higher layer parameter may be referred to as RepetitionFactor-r17 or Nrefslots-r17. The first higher layer parameter may be an upper layer parameter indicating the number of repetitions for the PUCCH resource corresponding to the PUCCH transmission. Alternatively, the first higher layer parameter may be configured for each PUCCH resource. The PUCCH resource may be configured by some or all of the upper layer parameter PUCCH-Resource, the upper layer parameter PUCCH-ResourceExt-r16, the upper layer parameter PUCCH-ResourceExt-r17, and the upper layer parameter PUCCH-ResourceExt.

[0246] N ｒｅｐｅａｔ ＰＵＣＣＨ Based at least on the fact that N is greater than 1, the terminal device 1 transmits the PUCCH including the UCI as N ｒｅｐｅａｔ ＰＵＣＣＨ That is, the terminal device 1 may transmit the PUCCH in N slots. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH may be repeated in N slots. ｒｅｐｅａｔ ＰＵＣＣＨ may be transmitted in N slots. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH transmission in each slot may have the same number of OFDM symbols and may have the same first OFDM symbol index. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH transmission in each slot may correspond to the same PUCCH resource. The number of OFDM symbols may be given by the higher layer parameter nrofSymbols corresponding to the PUCCH format selected by the PUCCH format index. The index of the first OFDM symbol may be given by the higher layer parameter startingSymbolIndex corresponding to the PUCCH format selected by the PUCCH format index. ｒｅｐｅａｔ ＰＵＣＣＨThe N slots may or may not be consecutive. ｒｅｐｅａｔ ＰＵＣＣＨ The slots may or may not be consecutive. ｒｅｐｅａｔ ＰＵＣＣＨ The slot is N ｒｅｐｅａｔ ＰＵＣＣＨ These slots may be referred to as "number of slots" or "available slots."

[0247] N ｒｅｐｅａｔ ＰＵＣＣＨ It may be configured to perform frequency hopping between different slots based at least on the PUCCH transmission being repeated in different slots. That is, performing frequency hopping may be configured by an upper layer parameter InterSlotFrequencyHopping in the PUCCH format. The frequency hopping may be performed slot by slot, and the hopping interval for the PUCCH may be one slot. Also, even-numbered PUCCH repetitions may start from the first PRB, and odd-numbered PUCCH repetitions may start from the second PRB. The first PRB may be given by an upper layer parameter StartingPRB, and the second PRB may be given by an upper layer parameter SecondHopPRB. The slot designated for the initial PUCCH transmission is designated as 0, and N PRBs may be specified. ｒｅｐｅａｔ ＰＵＣＣＨ Each subsequent slot until the PUCCH is transmitted in the slot may be counted regardless of whether the terminal device 1 transmits the PUCCH or not.

[0248] For example, N ｒｅｐｅａｔ ＰＵＣＣＨ If is 4, N ｒｅｐｅａｔ ＰＵＣＣＨ In the first slot, the PUCCH may start from the first PRB, and N ｒｅｐｅａｔ ＰＵＣＣＨ In the second slot, the PUCCH may start from the second PRB, and N ｒｅｐｅａｔ ＰＵＣＣＨ In the third slot, the PUCCH may start from the first PRB, and Nｒｅｐｅａｔ ＰＵＣＣＨ In the fourth slot, the PUCCH may start from the second PRB.

[0249] For example, N ｒｅｐｅａｔ ＰＵＣＣＨ If is 4, N ｒｅｐｅａｔ ＰＵＣＣＨ In the first slot, the PUCCH may be located in at least the first PRB, and N ｒｅｐｅａｔ ＰＵＣＣＨ In the second slot, the PUCCH may be located in at least the second PRB, and N ｒｅｐｅａｔ ＰＵＣＣＨ In the third slot, the PUCCH may be located in at least the first PRB, and N ｒｅｐｅａｔ ＰＵＣＣＨ In the fourth slot, the PUCCH may be arranged at least in the second PRB. ｒｅｐｅａｔ ＰＵＣＣＨ The first of the slots may be associated with the first PRB, and the N ｒｅｐｅａｔ ＰＵＣＣＨ The second of the slots may be associated with the second PRB, and the N ｒｅｐｅａｔ ＰＵＣＣＨ The third of the slots may be associated with the first PRB, and the N ｒｅｐｅａｔ ＰＵＣＣＨ The fourth of the slots may be associated with the second PRB.

[0250] The terminal device 1 receives PUCCH transmission including UCI. ｒｅｐｅａｔ ＰＵＣＣＨ Based at least on the fact that the PUCCH transmissions are repeated in different slots and that frequency hopping is configured to be performed between different slots for PUCCH transmissions, it may not be expected that frequency hopping will be performed for PUCCH transmissions within a slot.

[0251] N ｒｅｐｅａｔ ＰＵＣＣＨBased at least on repeating PUCCH transmissions including UCI in a slot, not configuring frequency hopping between different slots for PUCCH transmissions, and configuring frequency hopping within a slot for PUCCH transmissions, frequency hopping from a first PRB given by the higher layer parameter StartingPRB to a second PRB given by the higher layer parameter SecondHopPRB may be the same in each slot. Configuring frequency hopping within a slot may mean configuring an upper layer parameter IntraSlotFrequencyHopping for a PUCCH resource for PUCCH transmission.

[0252] The terminal device 1 uses N 1 slots for PUCCH transmission starting from the first slot in time division duplex (TDD or unpaired spectrum). ｒｅｐｅａｔ ＰＵＣＣＨ The first slot may be determined for transmitting a scheduling request. The first slot may be a slot indicated for reporting a HARQ-ACK. The slot indicated for reporting a HARQ-ACK may be a slot indicated by a PDSCH_HARQ feedback timing indication field. The first slot may be a slot determined for transmitting a scheduling request. The first slot may be a slot determined for reporting CSI.

[0253] N ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may have one OFDM symbol. ｒｅｐｅａｔ ＰＵＣＣＨThe slots may include the one OFDM symbol. The one OFDM symbol may correspond to an OFDM symbol index given by startingSymbolIndex. For example, the one OFDM symbol may be provided by startingSymbolIndex. The one OFDM symbol may be a UL symbol or a flexible symbol. The one OFDM symbol may not be a symbol designated for receiving an SS / PBCH block. The N ｒｅｐｅａｔ ＰＵＣＣＨ The slots may have consecutive OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ A slot may include the consecutive OFDM symbols. The number of consecutive OFDM symbols may be the same as the number of OFDM symbols specified by nrofSymbols. Alternatively, the number of consecutive OFDM symbols may be greater than the number of OFDM symbols specified by nrofSymbols. The consecutive OFDM symbols may start from the first OFDM symbol. The consecutive OFDM symbols may include one or more UL symbols or one or more flexible symbols. Alternatively, the consecutive OFDM symbols may include one or more UL symbols and one or more flexible symbols. The consecutive OFDM symbols may not be symbols designated for receiving an SS / PBCH block.

[0254] N ｒｅｐｅａｔ ＰＵＣＣＨ The slots may include UL slots. The UL slots may be slots consisting of UL symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The slots may include a special slot. The special slot may be a slot consisting of a UL symbol, a flexible symbol, and a DL symbol. ｒｅｐｅａｔ ＰＵＣＣＨ The slots may not include a DL slot. The DL slot may be a slot consisting of DL symbols. ｒｅｐｅａｔ ＰＵＣＣＨThis slot may not include a special slot associated with the SS / PBCH block.

[0255] The UL symbol may be an OFDM symbol configured or indicated for uplink in time division duplex. The UL symbol may be an OFDM symbol configured or indicated for PUSCH, PUCCH, PRACH, or SRS. The UL symbol may be configured by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The UL symbol may be configured by the higher layer parameter tdd-UL-DL-ConfigurationDedicated. The UL slot may be configured by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The UL slot may be configured by the higher layer parameter tdd-UL-DL-ConfigurationDedicated.

[0256] The DL symbol may be an OFDM symbol configured or indicated for downlink in time division duplex. The DL symbol may be an OFDM symbol configured or indicated for PDSCH or PDCCH. The DL symbol may be configured by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The DL symbol may be configured by the higher layer parameter tdd-UL-DL-ConfigurationDedicated. The DL slot may be configured by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The DL slot may be configured by the higher layer parameter tdd-UL-DL-ConfigurationDedicated.

[0257] The flexible symbols may be OFDM symbols within a certain period that are not configured or indicated as UL or DL ​​symbols, which may be a period given by the higher layer parameter dl-UL-TransmissionPeriodicity.The flexible symbols may be OFDM symbols configured or indicated for PDSCH, PDCCH, PUSCH, PUCCH, or PRACH.

[0258] In Frequency Division Duplex (FDD or Paired Spectrum), N ｒｅｐｅａｔ ＰＵＣＣＨ The slots are N ｒｅｐｅａｔ ＰＵＣＣＨ The N slots may be consecutive slots. ｒｅｐｅａｔ ＰＵＣＣＨ The first slot of the slots may be the slot indicated by the PDSCH_HARQ feedback timing indication field, or may be the slot determined for transmitting a scheduling request, or may be the slot determined for reporting CSI.

[0259] The terminal device 1 may be configured with an upper layer parameter PUCCH-Config. PUCCH-Config may be configured for BWP-UplinkDedicated. Furthermore, an upper layer parameter subslotLengthForPUCCH (or subslotLengthForPUCCH-r16) may be configured in PUCCH-Config. The subslotLengthForPUCCH may indicate the number of OFDM symbols. For example, the subslotLengthForPUCCH may indicate the length of a subslot for subslot-based PUCCH transmission in terms of the number of OFDM symbols. The PUCCH transmission may be PUCCH feedback. The subslotLengthForPUCCH indicating 2 may correspond to the number of OFDM symbols being 2. The subslotLengthForPUCCH indicating 6 may correspond to the number of OFDM symbols being 6. The subslotLengthForPUCCH indicating 7 may correspond to the number of OFDM symbols being 7. If the CP setting is normal CP, the subslotLengthForPUCCH may indicate 2 or 7. If the CP setting is extended CP, the subslotLengthForPUCCH may indicate 2 or 6.

[0260] Two PUCCH-Configs may be configured in the terminal device 1. When subslotLengthForPUCCH is configured in a first PUCCH-Config, the PUCCH resource in the first PUCCH-Config may be within the number of OFDM symbols indicated by subslotLengthForPUCCH. The PUCCH resource may be a PUCCH resource for reporting HARQ-ACK. The PUCCH resource may be a PUCCH resource for reporting CSI or a PUCCH resource for SR.

[0261] When subslotLengthForPUCCH is provided, the first slot for associated PUCCH transmission may include a number of OFDM symbols indicated by subslotLengthForPUCCH. For example, when subslotLengthForPUCCH is configured for PUCCH-Config, the first slot for PUCCH transmission associated with the PUCCH-Config may include OFDM symbols corresponding to a certain number of OFDM symbols. The certain number of OFDM symbols may be determined by subslotLengthForPUCCH. Including OFDM symbols corresponding to a certain number of OFDM symbols in the first slot may mean that the first slot is configured with the certain number of OFDM symbols. For example, if the certain number of OFDM symbols is seven, the first slot may be configured with seven OFDM symbols. For example, if subslotLengthForPUCCH is not configured for a PUCCH-Config, the second slot for the PUCCH corresponding to the PUCCH-Config is N ｓｌｏｔ ｓｙｍｂ OFDM symbols per subslot for PUCCH. Also, the number of OFDM symbols per subslot for PUCCH may be provided by subslotLengthForPUCCH.

[0262] When subslotLengthForPUCCH is configured for PUCCH-Config, the first OFDM symbol of the PUCCH resource in the PUCCH-Config may be related to the first OFDM symbol in the first slot. For example, the first OFDM symbol of the PUCCH resource may be determined based on the first OFDM symbol in the first slot. For example, the first OFDM symbol of the PUCCH resource may be determined by the number of OFDM symbols from the first OFDM symbol in the first slot. The first slot may be configured with the number of OFDM symbols indicated by subslotLengthForPUCCH. The number of OFDM symbols constituting the PUCCH resource may not exceed the number of OFDM symbols indicated by subslotLengthForPUCCH. That is, the number of OFDM symbols to which the PUCCH corresponding to the PUCCH-Config is mapped may not exceed the number of OFDM symbols indicated by the subslotLengthForPUCCH. Furthermore, the nrofsymbols corresponding to the PUCCH resource in the PUCCH-Config may not exceed the number of OFDM symbols indicated by the subslotLengthForPUCCH. Furthermore, the startingSymbolIndex corresponding to the PUCCH resource in the PUCCH-Config may not exceed the number of OFDM symbols indicated by the subslotLengthForPUCCH. The first slot may be referred to as a subslot.

[0263] When subslotLengthForPUCCH is configured for PUCCH-Config, a PDCCH including a DCI format indicating transmission of a PUCCH corresponding to the PUCCH-Config may be received. The DCI format may include a PDSCH_HARQ feedback timing indication field. The PDSCH_HARQ feedback timing indication field may be used to indicate at least the number of subslots from the slot including the last OFDM symbol of the PDSCH to the subslot including the first OFDM symbol of the PUCCH. Furthermore, the number of OFDM symbols per subslot indicating the number of subslots may be given by the subslotLengthForPUCCH.

[0264] SubslotLengthForPUCCH is set for PUCCH-Config, and the PUCCH corresponding to the PUCCH-Config is N ｒｅｐｅａｔ ＰＵＣＣＨ If it is transmitted in the Nth slot, ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may consist of the number of OFDM symbols indicated by the subslotLengthForPUCCH. ｒｅｐｅａｔ ＰＵＣＣＨ Each of the slots may be a sub-slot.

[0265] 9 is a diagram illustrating an example of repeated transmission of PUCCH when a normal CP according to one aspect of the present embodiment is configured. In an uplink BWP in an uplink carrier, the terminal device 1 may transmit PUCCH 9200 in slot 9500 and may transmit PUCCH 9201 in slot 9501. The slot 9500 and the slot 9501 are N ｓｌｏｔ ｓｙｍｂ The number of OFDM symbols per slot in slot 9500 and slot 9501 may be N ｓｌｏｔ ｓｙｍｂ For example, slot 9500 may consist of 14 OFDM symbols, and slot 9501 may consist of 14 OFDM symbols.

[0266] PUCCH 9201 may be a repetition of PUCCH 9200. Also, in FIG. 9, when subslotLengthForPUCCH is not set, the repetition of PUCCH may be PUCCH 9200 and PUCCH 9201. Also, when subslotLengthForPUCCH is not set for PUCCH-Config, the repetition of PUCCH for this PUCCH-Config may be PUCCH 9200 and PUCCH 9201. Also, slot 9500 and slot 9501 are N ｒｅｐｅａｔ ＰＵＣＣＨ It may be a part or all of the slots. ｒｅｐｅａｔ ＰＵＣＣＨ can also be 2.

[0267] In FIG. 9 , the DCI format may indicate transmission of PUCCH 9200 in slot 9500. If the DCI format includes a PDSCH_HARQ feedback timing indication field, the slot specified by the PDSCH_HARQ feedback timing indication field may be slot 9500. Also, if the DCI format includes a PUCCH resource indication field, the PUCCH resource indication field may indicate one PUCCH resource. A repetition count (or the number of slots) may be configured for the one PUCCH resource. N is determined based on the repetition count. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH resource of the PUCCH 9200 may be the same as the PUCCH resource of the PUCCH 9201.

[0268] 9 , in the uplink BWP in the uplink carrier, the terminal device 1 may transmit PUCCH 9100 in subslot 9400, may transmit PUCCH 9101 in subslot 9401, may transmit PUCCH 9102 in subslot 9402, and may transmit PUCCH 9103 in subslot 9403. Each of subslot 9400, subslot 9401, subslot 9402, and subslot 9403 may include OFDM symbols corresponding to the number of OFDM symbols given by subslotLengthForPUCCH. Furthermore, the number of OFDM symbols per slot in subslot 9400, subslot 9401, subslot 9402, and subslot 9403 may be given by subslotLengthForPUCCH. For example, the value set in the subslotLengthForPUCCH may be 7. When 7 is given in the subslotLengthForPUCCH, the number of OFDM symbols per subslot may be 7.

[0269] PUCCH 9101, PUCCH 9102, and PUCCH 9103 may be repetitions of PUCCH 9100. Also, in FIG. 9 , when subslotLengthForPUCCH is set to 7, the repetition of PUCCH may be PUCCH 9100, PUCCH 9101, PUCCH 9102, and PUCCH 9103. Also, when subslotLengthForPUCCH is set for PUCCH-Config, the repetition of PUCCH for this PUCCH-Config may be PUCCH 9100, PUCCH 9101, PUCCH 9102, and PUCCH 9103. In addition, sub-slot 9400, sub-slot 9401, sub-slot 9402, and sub-slot 9403 are N ｒｅｐｅａｔ ＰＵＣＣＨ For example, the N ｒｅｐｅａｔ ＰＵＣＣＨ may be 4. ｒｅｐｅａｔ ＰＵＣＣＨ Each of the slots may be a sub-slot.

[0270] In FIG. 9 , the DCI format may indicate transmission of the PUCCH 9100 in a subslot 9400. If the DCI format includes a PDSCH_HARQ feedback timing indication field, the subslot specified by the PDSCH_HARQ feedback timing indication field may be the subslot 9400. If the DCI format includes a PUCCH resource indication field, the PUCCH resource indication field may indicate one PUCCH resource. A repetition count (or the number of subslots) may be configured for the one PUCCH resource. The repetition count determines N. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH resource of the PUCCH 9100 may be the same as the PUCCH resources of the PUCCH 9101, the PUCCH 9102, and the PUCCH 9103.

[0271] In FIG. 9 , in the uplink BWP on the uplink carrier, the terminal device 1 may transmit PUCCH 9000 in sub-slot 9300, may transmit PUCCH 9001 in sub-slot 9301, may transmit PUCCH 9002 in sub-slot 9302, may transmit PUCCH 9003 in sub-slot 9303, may transmit PUCCH 9004 in sub-slot 9304, may transmit PUCCH 9005 in sub-slot 9305, and may transmit PUCCH 9006 in sub-slot 9307. PUCCH 9006 may be transmitted in sub-slot 9306, PUCCH 9007 may be transmitted in sub-slot 9307, PUCCH 9008 may be transmitted in sub-slot 9308, PUCCH 9009 may be transmitted in sub-slot 9309, PUCCH 9010 may be transmitted in sub-slot 9310, PUCCH 9011 may be transmitted in sub-slot 9311, PUCCH 9012 may be transmitted in sub-slot 9312, and PUCCH 9013 may be transmitted in sub-slot 9313. Each of subslot 9300, subslot 9301, subslot 9302, subslot 9303, subslot 9304, subslot 9305, subslot 9305, subslot 9306, subslot 9307, subslot 9308, subslot 9309, subslot 9310, subslot 9311, subslot 9312, and subslot 9313 may include OFDM symbols corresponding to the number of OFDM symbols given by subslotLengthForPUCCH. Also, the number of OFDM symbols per subslot in subslot 9300, subslot 9301, subslot 9302, subslot 9303, subslot 9304, subslot 9305, subslot 9306, subslot 9307, subslot 9308, subslot 9309, subslot 9310, subslot 9311, subslot 9312, and subslot 9313 may be given by subslotLengthForPUCCH. For example, the value set in subslotLengthForPUCCH may be 2.If the subslotLengthForPUCCH is given as 2, the number of OFDM symbols per subslot may be 2.

[0272] PUCCH 9001, PUCCH 9002, PUCCH 9003, PUCCH 9004, PUCCH 9005, PUCCH 9006, PUCCH 9007, PUCCH 9008, PUCCH 9009, PUCCH 9010, PUCCH 9011, PUCCH 9012, and PUCCH 9013 may be repetitions of PUCCH 9000. Also, in Figure 9, when subslotLengthForPUCCH is set to 2, the repetition of PUCCH may be some or all of PUCCH9000, PUCCH9001, PUCCH9002, PUCCH9003, PUCCH9004, PUCCH9005, PUCCH9006, PUCCH9007, PUCCH9008, PUCCH9009, PUCCH9010, PUCCH9011, PUCCH9012, and PUCCH9013. Also, when subslotLengthForPUCCH is set for PUCCH-Config, the repetition of PUCCH for that PUCCH-Config may be some or all of PUCCH9000, PUCCH9001, PUCCH9002, PUCCH9003, PUCCH9004, PUCCH9005, PUCCH9006, PUCCH9007, PUCCH9008, PUCCH9009, PUCCH9010, PUCCH9011, PUCCH9012, and PUCCH9013. Furthermore, subslot 9300, subslot 9301, subslot 9302, subslot 9303, subslot 9304, subslot 9305, subslot 9306, subslot 9307, subslot 9308, subslot 9309, subslot 9310, subslot 9311, subslot 9312, and subslot 9313 are N ｒｅｐｅａｔ ＰＵＣＣＨ For example, the N ｒｅｐｅａｔ ＰＵＣＣＨ may be 14. ｒｅｐｅａｔ ＰＵＣＣＨEach of the slots may be a sub-slot. ｒｅｐｅａｔ ＰＵＣＣＨ If is 7, the repetition of PUCCH 9000 may not exceed slot 9500.

[0273] In FIG. 9 , the DCI format may indicate transmission of PUCCH 9000 in slot 9300. If the DCI format includes a PDSCH_HARQ feedback timing indication field, the subslot specified by the PDSCH_HARQ feedback timing indication field may be subslot 9300. Also, if the DCI format includes a PUCCH resource indication field, the PUCCH resource indication field may indicate one PUCCH resource. A repetition count (or the number of subslots) may be configured for the one PUCCH resource. N is determined based on the repetition count. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH resource of PUCCH 9000 may be the same as the PUCCH resource of PUCCH 9001, PUCCH 9002, PUCCH 9003, PUCCH 9004, PUCCH 9005, PUCCH 9006, PUCCH 9007, PUCCH 9008, PUCCH 9009, PUCCH 9010, PUCCH 9011, PUCCH 9012, and PUCCH 9013.

[0274] 10 is a diagram illustrating an example of repeated transmission of PUCCH when an extended CP according to one aspect of the present embodiment is configured. In the uplink BWP in the uplink carrier, the terminal device 1 may transmit PUCCH 10200 in slot 10500 and may transmit PUCCH 10201 in slot 10501. The slot 10500 and the slot 10501 are N ｓｌｏｔ ｓｙｍｂ The number of OFDM symbols per slot in slot 10500 and slot 10501 may be N ｓｌｏｔ ｓｙｍｂFor example, slot 10500 may consist of 12 OFDM symbols, and slot 10501 may consist of 12 OFDM symbols.

[0275] PUCCH 10201 may be a repetition of PUCCH 10200. Also, in FIG. 9, when subslotLengthForPUCCH is not set, the repetition of PUCCH may be PUCCH 10200 and PUCCH 10201. Also, when subslotLengthForPUCCH is not set for PUCCH-Config, the repetition of PUCCH for this PUCCH-Config may be PUCCH 10200 and PUCCH 10201. Also, slot 10500 and slot 10501 are N ｒｅｐｅａｔ ＰＵＣＣＨ It may be a part or all of the slots. ｒｅｐｅａｔ ＰＵＣＣＨ can also be 2.

[0276] In FIG. 10 , the DCI format may indicate transmission of the PUCCH 10200 in slot 10500. If the DCI format includes a PDSCH_HARQ feedback timing indication field, the slot specified by the PDSCH_HARQ feedback timing indication field may be slot 10500. Also, if the DCI format includes a PUCCH resource indication field, the PUCCH resource indication field may indicate one PUCCH resource. A repetition count (or the number of slots) may be configured for the one PUCCH resource. The repetition count determines N. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH resource of the PUCCH 10200 may be the same as the PUCCH resource of the PUCCH 10201.

[0277] 10 , in the uplink BWP in the uplink carrier, the terminal device 1 may transmit PUCCH 10100 in subslot 10400, may transmit PUCCH 10101 in subslot 10401, may transmit PUCCH 10102 in subslot 10402, and may transmit PUCCH 10103 in subslot 10403. Each of the subslot 10400, subslot 10401, subslot 10402, and subslot 10403 may include OFDM symbols corresponding to the number of OFDM symbols given by subslotLengthForPUCCH. Furthermore, the number of OFDM symbols per subslot in subslot 10400, subslot 10401, subslot 10402, and subslot 10403 may be given by subslotLengthForPUCCH. For example, the value set in subslotLengthForPUCCH may be 6. When 6 is given in subslotLengthForPUCCH, the number of OFDM symbols per subslot may be 6.

[0278] PUCCH 10101, PUCCH 10102, and PUCCH 10103 may be repetitions of PUCCH 10100. Also, in FIG. 10 , when subslotLengthForPUCCH is set to 6, the repetition of PUCCH may be PUCCH 10100, PUCCH 10101, PUCCH 10102, and PUCCH 10103. Also, when subslotLengthForPUCCH is set for PUCCH-Config, the repetition of PUCCH for the PUCCH-Config may be PUCCH 10100, PUCCH 10101, PUCCH 10102, and PUCCH 10103. In addition, sub-slot 10400, sub-slot 10401, sub-slot 10402, and sub-slot 10403 are N ｒｅｐｅａｔ ＰＵＣＣＨ For example, the N ｒｅｐｅａｔ ＰＵＣＣＨ may be 4. ｒｅｐｅａｔ ＰＵＣＣＨEach of the slots may be a sub-slot.

[0279] In FIG. 10 , the DCI format may indicate transmission of the PUCCH 10100 in a subslot 10400. If the DCI format includes a PDSCH_HARQ feedback timing indication field, the subslot specified by the PDSCH_HARQ feedback timing indication field may be the subslot 10400. If the DCI format includes a PUCCH resource indication field, the PUCCH resource indication field may indicate one PUCCH resource. A repetition count (or the number of subslots) may be set for the one PUCCH resource. The repetition count determines N. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH resource of the PUCCH 10100 may be the same as the PUCCH resources of the PUCCHs 10101, 10102, and 10103.

[0280] In FIG. 10 , in the uplink BWP in the uplink carrier, the terminal device 1 may transmit PUCCH 10000 in sub-slot 10300, may transmit PUCCH 10001 in sub-slot 10301, may transmit PUCCH 10002 in sub-slot 10302, may transmit PUCCH 10003 in sub-slot 10303, may transmit PUCCH 10004 in sub-slot 10304, and may transmit PUCCH 10005 in sub-slot 10306. PUCCH 10005 may be transmitted in subslot 10305, PUCCH 10006 may be transmitted in subslot 10306, PUCCH 10007 may be transmitted in subslot 10307, ​​PUCCH 10008 may be transmitted in subslot 10308, PUCCH 10009 may be transmitted in subslot 10309, PUCCH 10010 may be transmitted in subslot 10310, and PUCCH 10011 may be transmitted in subslot 10311. Each of subslot 10300, subslot 10301, subslot 10302, subslot 10303, subslot 10304, subslot 10305, subslot 10306, subslot 10307, ​​subslot 10308, subslot 10309, subslot 10310, and subslot 10311 may include OFDM symbols corresponding to the number of OFDM symbols given by subslotLengthForPUCCH. Furthermore, the number of OFDM symbols per subslot in subslot 10300, subslot 10301, subslot 10302, subslot 10303, subslot 10304, subslot 10305, subslot 10306, subslot 10307, ​​subslot 10308, subslot 10309, subslot 10310, and subslot 10311 may be given by subslotLengthForPUCCH. For example, the value set in subslotLengthForPUCCH may be 2. When 2 is given in subslotLengthForPUCCH, the number of OFDM symbols per subslot may be 2.

[0281] PUCCH10001, PUCCH10002, PUCCH10003, PUCCH10004, PUCCH10005, PUCCH10006, PUCCH10007, PUCCH10008, PUCCH10009, PUCCH10010, and PUCCH10011 may be repetitions of PUCCH10000. Also, in FIG. 10, when subslotLengthForPUCCH is set to 2, the repetition of PUCCH may be some or all of PUCCH10000, PUCCH10001, PUCCH10002, PUCCH10003, PUCCH10004, PUCCH10005, PUCCH10006, PUCCH10007, PUCCH10008, PUCCH10009, PUCCH10010, and PUCCH10011. Also, when subslotLengthForPUCCH is set for PUCCH-Config, the repetition of PUCCH for that PUCCH-Config may be some or all of PUCCH10000, PUCCH10001, PUCCH10002, PUCCH10003, PUCCH10004, PUCCH10005, PUCCH10006, PUCCH10007, PUCCH10008, PUCCH10009, PUCCH10010, and PUCCH10011. Furthermore, sub-slot 10300, sub-slot 10301, sub-slot 10302, sub-slot 10303, sub-slot 10304, sub-slot 10305, sub-slot 10306, sub-slot 10307, ​​sub-slot 10308, sub-slot 10309, sub-slot 10310, and sub-slot 10311 are N ｒｅｐｅａｔ ＰＵＣＣＨ For example, the N ｒｅｐｅａｔ ＰＵＣＣＨ may be 12. ｒｅｐｅａｔ ＰＵＣＣＨ Each of the slots may be a sub-slot. ｒｅｐｅａｔ ＰＵＣＣＨ If is 6, the repetition of PUCCH 10000 may not exceed slot 10500.

[0282] In FIG. 10 , the DCI format may indicate transmission of PUCCH 10000 in subslot 10300. If the DCI format includes a PDSCH_HARQ feedback timing indication field, the subslot specified by the PDSCH_HARQ feedback timing indication field may be subslot 10300. Also, if the DCI format includes a PUCCH resource indication field, the PUCCH resource indication field may indicate one PUCCH resource. A repetition count (or the number of subslots) may be set for the one PUCCH resource. N may be set depending on the repetition count. ｒｅｐｅａｔ ＰＵＣＣＨ The PUCCH resource of PUCCH 10000 may be the same as the PUCCH resource of PUCCH 10001, PUCCH 10002, PUCCH 10003, PUCCH 10004, PUCCH 10005, PUCCH 10006, PUCCH 10007, PUCCH 10008, PUCCH 10009, PUCCH 10010, and PUCCH 10011.

[0283] The number of slots in which a certain PUCCH is transmitted may be set to the PUCCH resource for that certain PUCCH, and the number of OFDM symbols included in each slot in which that certain PUCCH is transmitted may be changed by subslotLengthForPUCCH. Therefore, as a problem, the number of slots needs to be adjusted according to the number of OFDM symbols constituting that slot. As an example of the problem, if the number of OFDM symbols included in one UL slot is the same as the number of OFDM symbols included in slot 9500, N ｒｅｐｅａｔ ＰＵＣＣＨ When N is 8, the repetition of PUCCH 9000 exceeds one UL slot. ｒｅｐｅａｔ ＰＵＣＣＨ When the number of repetitions of the PUCCH 9000 is 7, the repetitions of the PUCCH 9000 can be transmitted within one UL slot. For example, at least the means 1, the means 2, and the means 3 may be used to solve the problem.

[0284] In the first means, a repetition number N is determined by a first higher layer parameter in the PUCCH resource. ｒｅｐｅａｔ ＰＵＣＣＨ In the means 1, the N ｒｅｐｅａｔ ＰＵＣＣＨ may be determined regardless of whether subslotLengthForPUCCH is configured in the terminal device 1. The PUCCH corresponding to the PUCCH resource is ｒｅｐｅａｔ ＰＵＣＣＨ If subslotLengthForPUCCH is set in the PUCCH-Config corresponding to the PUCCH, the N ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may consist of a number of first OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ Each of the slots may include OFDM symbols corresponding to the number of first OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols per slot in the slot may be the number of first OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols included in each slot may be the number of the first OFDM symbols. The number of the first OFDM symbols may be given by the subslotLengthForPUCCH. The number of the first OFDM symbols may be 2, 6, or 7. That is, when subslotLengthForPUCCH is set in the PUCCH-Config corresponding to the PUCCH, the number of the first OFDM symbols may be 2, 6, or 7. ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may be a subslot. The first higher layer parameter may be referred to as RepetitionFactor-r17 or NumberSlots-r17. The PUCCH resource may be configured by some or all of the higher layer parameters PUCCH-Resource, PUCCH-ResourceExt-r16, PUCCH-ResourceExt-r17, and PUCCH-ResourceExt.

[0285] In the first means, N is determined by RepetitionFactor-r17 in the PUCCH resource corresponding to the PUCCH. ｒｅｐｅａｔ ＰＵＣＣＨ is determined, and subslotLengthForPUCCH is not set in the PUCCH-Config corresponding to the PUCCH, ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may be made up of a second number of OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may include OFDM symbols corresponding to the number of second OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols per slot in the slot may be the number of the second OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols included in each slot may be the number of the second OFDM symbols. ｓｌｏｔ ｓｙｍｂ That's fine too.

[0286] In the means 1, RepetitionFactor-r17 may be set for a PUCCH resource corresponding to a PUCCH. When subslotLengthForPUCCH is set in PUCCH-Config corresponding to the PUCCH, the PUCCH may be transmitted in some or all of the OFDM symbols corresponding to a first number of OFDM symbols. The first number of OFDM symbols may be calculated from a value indicated by RepetitionFactor-r17 and a second number of OFDM symbols. The first number of OFDM symbols may be the product of the value indicated by RepetitionFactor-r17 and the second number of OFDM symbols. The second OFDM symbols may be given by subslotLengthForPUCCH. If subslotLengthForPUCCH is not set in the PUCCH-Config corresponding to the PUCCH, the PUCCH may be transmitted in some or all of the OFDM symbols corresponding to the third number of OFDM symbols. The third number of OFDM symbols may be calculated from the value indicated by RepetitionFactor-r17 and the fourth number of OFDM symbols. The third number of OFDM symbols may be the product of the value indicated by RepetitionFactor-r17 and the fourth number of OFDM symbols. The fourth OFDM symbols may be N ｓｌｏｔ ｓｙｍｂ That's fine too.

[0287] In the first method, N ｒｅｐｅａｔ ＰＵＣＣＨ may be 7. For example, N ｒｅｐｅａｔ ＰＵＣＣＨ When N is 7, the repetition of PUCCH when subslotLengthForPUCCH is 2 may not exceed one slot when subslotLengthForPUCCH is not set. Also, the number of OFDM symbols from the first OFDM symbol of subslot 9300 to the last OFDM symbol of subslot 9306 may be the same as the number of OFDM symbols included in slot 9500. Therefore, when PUCCH repetition is transmitted in slot 9500 when subslotLengthForPUCCH is 2, Nｒｅｐｅａｔ ＰＵＣＣＨ may be 7.

[0288] In the first means, the RepetitionFactor-r 17 may select a number of slots from a set containing one or more integer values. ｒｅｐｅａｔ ＰＵＣＣＨ may be the number of slots. The number of slots may indicate the number of subslots. The set may include 7. The RepetitionFactor-r17 may be composed of 3 bits. For example, the set may include 1, 2, 3, 4, 5, 6, 7, and 8. For example, the set may include 1, 2, 4, 6, 7, and 8. For example, the set may include 1, 2, 4, 6, 7, 8, 12, and 14. For example, the set may include at least 1, 3, 5, 6, and 7. For example, if PUCCH repetition is indicated by Nrofslots, the repetition of the PUCCH may be canceled based on the number of slots being 1. For example, based on the number of slots being 2, the number of OFDM symbols between the first OFDM symbol of the repetition of PUCCH 9100 and the last OFDM symbol of the repetition of PUCCH 9100 (i.e., the last OFDM symbol of PUCCH 9101) may not exceed the number of OFDM symbols included in slot 9500. For example, based on the number of slots being 6, the number of OFDM symbols between the first OFDM symbol of the repetition of PUCCH 10000 and the last OFDM symbol of the repetition of PUCCH 10000 (i.e., the last OFDM symbol of PUCCH 10005) may be set to the number of OFDM symbols included in slot 10500. For example, based on the number of slots being 7, ｒｅｐｅａｔ ＰＵＣＣＨ the first OFDM symbol in the first slot (e.g., sub-slot 9300) of the slot; and N ｒｅｐｅａｔ ＰＵＣＣＨThe number of OFDM symbols between the last OFDM symbol in the last slot (e.g., subslot 9306) of the slot and the last OFDM symbol in the last slot may be aligned with the number of OFDM symbols included in slot 9500. For example, if the number of slots is 5, the reception gain due to repetition may be improved compared to if the number of slots is 4. For example, if the number of slots is 5, the delay due to repetition may be improved compared to if the number of slots is 8.

[0289] In the first embodiment, RepetitionFactor-r17 may indicate a number of slots from a set containing one or more integer values. ｒｅｐｅａｔ ＰＵＣＣＨ The RepetitionFactor r17 may be the number of slots. The RepetitionFactor r17 may be composed of 2 bits. For example, the number of slots may be 1, 2, 4, or 8.

[0290] In the first means, when RepetitionFactor-r17 is not set for a PUCCH resource for a PUCCH and Nrfslots is set for a PUCCH format for the PUCCH, N ｒｅｐｅａｔ ＰＵＣＣＨ may be determined by the Nrofslots.

[0291] In the means 1, a higher layer parameter may be configured for a PUCCH resource corresponding to the PUCCH. The higher layer parameter may select a number of slots from a set including one or more integer values. The number of slots in which the PUCCH is transmitted may be the number of slots. If subslotLengthForPUCCH is configured for PUCCH-Config corresponding to the PUCCH, the number of OFDM symbols included in each slot in which the PUCCH is transmitted may be a first number of OFDM symbols. If subslotLengthForPUCCH is not configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted may be a second number of OFDM symbols. The first number of OFDM symbols may be given by subslotLengthForPUCCH. That is, when the subslotLengthForPUCCH is configured, each slot in which the PUCCH is transmitted may be a subslot. When the subslotLengthForPUCCH is configured, the number of slots may be the number of subslots. The number of second OFDM symbols is N ｓｌｏｔ ｓｙｍｂ The set may include at least 7. The set may also include at least 1, 3, 5, 6, and 7.

[0292] In the means 2, N is determined based at least on a first higher layer parameter in a PUCCH resource corresponding to the PUCCH and whether or not subslotLengthForPUCCH is set in the PUCCH-Config corresponding to the PUCCH. ｒｅｐｅａｔ ＰＵＣＣＨ may be determined. ｒｅｐｅａｔ ＰＵＣＣＨ may be determined from a set of one or more integer values ​​for the number of slots. ｒｅｐｅａｔ ＰＵＣＣＨ If the subslotLengthForPUCCH is set, the subslotLengthForPUCCH may be transmitted in N slots. ｒｅｐｅａｔ ＰＵＣＣＨEach slot may consist of the first number of OFDM symbols. If the subslotLengthForPUCCH is configured, N ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may be a sub-slot. If the subslotLengthForPUCCH is configured, the number of slots may be the number of sub-slots. ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may include OFDM symbols corresponding to the number of the first OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols per slot in the slot may be the number of the first OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols included in each slot may be the number of the first OFDM symbols. The number of the first OFDM symbols may be given by the subslotLengthForPUCCH. If the subslotLengthForPUCCH is not configured, N ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may be made up of a second number of OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may include OFDM symbols corresponding to the number of second OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols per slot in the slot may be the number of the second OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols included in each slot may be the number of the second OFDM symbols. ｓｌｏｔ ｓｙｍｂThe first number of OFDM symbols may be 2, 6, or 7. The first higher layer parameter may be referred to as RepetitionFactor-r17 or NumberOfSlots-r17. The PUCCH resource may be configured by any of the higher layer parameter PUCCH-Resource, the higher layer parameter PUCCH-ResourceExt-r16, the higher layer parameter PUCCH-ResourceExt-r17, and the higher layer parameter PUCCH-ResourceExt.

[0293] In the second means, N is determined when subslotLengthForPUCCH is set for PUCCH-Config corresponding to PUCCH. ｒｅｐｅａｔ ＰＵＣＣＨ is determined when the subslotLengthForPUCCH is not set. ｒｅｐｅａｔ ＰＵＣＣＨ Furthermore, in the PUCCH resource corresponding to the PUCCH, RepetitionFactor-r17 may indicate one symbol (or value) among one or more symbols (or values). For example, RepetitionFactor-r17 may indicate A among A and B. When subslotLengthForPUCCH is configured in the PUCCH-Config corresponding to the PUCCH, A may be 2, and N ｒｅｐｅａｔ ＰＵＣＣＨ may be 2. Also, if subslotLengthForPUCCH is not set in the PUCCH-Config corresponding to the PUCCH, A may be 1, and N ｒｅｐｅａｔ ＰＵＣＣＨ may be 1. For example, RepetitionFactor-r17 may indicate B among A and B. If subslotLengthForPUCCH is configured in PUCCH-Config corresponding to the PUCCH, B may be 4, and N ｒｅｐｅａｔ ＰＵＣＣＨ may be 4. If subslotLengthForPUCCH is not set in the PUCCH-Config corresponding to the PUCCH, B may be 2, and Nｒｅｐｅａｔ ＰＵＣＣＨ can also be 2.

[0294] In the means 2, the RepetitionFactor-r17 in the PUCCH resource corresponding to the PUCCH may indicate the number of one slot based at least on whether or not subslotLengthForPUCCH is set in the PUCCH-Config corresponding to the PUCCH. ｒｅｐｅａｔ ＰＵＣＣＨ may be the number of one slot. The number of one slot when the subslotLengthForPUCCH is not configured may be different from the number of one slot when the subslotLengthForPUCCH is configured. Furthermore, the number of one slot when the subslotLengthForPUCCH is set to 2 may be different from the number of one slot when the subslotLengthForPUCCH is set to 7. Furthermore, the number of one slot when a normal CP is configured and the subslotLengthForPUCCH is set to 2 may be different from the number of one slot when an extended CP is configured and the subslotLengthForPUCCH is set to 2. In the second means, RepetitionFactor-r17 in the PUCCH resource corresponding to the PUCCH may indicate one symbol (or value) among a plurality of symbols (or values). The one number of slots may be determined based at least on the one symbol (or value) and whether or not subslotLengthForPUCCH is set in the PUCCH-Config corresponding to the PUCCH.

[0295] In the means 2, a certain higher layer parameter may be configured for a PUCCH resource corresponding to the PUCCH. One number of slots may be determined based at least on the certain higher layer parameter and whether or not subslotLengthForPUCCH is configured for PUCCH-Config corresponding to the PUCCH. The number of slots in which the PUCCH is transmitted may be the one number of slots. If subslotLengthForPUCCH is configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted may be a first number of OFDM symbols. If subslotLengthForPUCCH is configured, each slot in which the PUCCH is transmitted may be a subslot. If subslotLengthForPUCCH is configured, the one number of slots may be the number of subslots. If the subslotLengthForPUCCH is not configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted may be a second number of OFDM symbols. The first number of OFDM symbols may be given by the subslotLengthForPUCCH. The second number of OFDM symbols may be N ｓｌｏｔ ｓｙｍｂ The number of slots when the subslotLengthForPUCCH is configured may be different from the number of slots when the subslotLengthForPUCCH is not configured.

[0296] In the means 3, the N is determined based at least on a first higher layer parameter in a PUCCH resource corresponding to the PUCCH, a second higher layer parameter in the PUCCH resource corresponding to the PUCCH, and whether or not subslotLengthForPUCCH is set in the PUCCH-Config corresponding to the PUCCH. ｒｅｐｅａｔ ＰＵＣＣＨ may be determined. ｒｅｐｅａｔ ＰＵＣＣＨ may be determined as the number of slots. ｒｅｐｅａｔ ＰＵＣＣＨIf the subslotLengthForPUCCH is set, the subslotLengthForPUCCH may be transmitted in N slots. ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may consist of the first number of OFDM symbols. If the subslotLengthForPUCCH is configured, N ｒｅｐｅａｔ ＰＵＣＣＨ Each of the slots may be a sub-slot. ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may include OFDM symbols corresponding to the number of the first OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols per slot in the slot may be the number of the first OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols included in each slot may be the number of the first OFDM symbols. The number of the first OFDM symbols may be given by the subslotLengthForPUCCH. If the subslotLengthForPUCCH is not configured, N ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may be made up of a second number of OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ Each slot may include OFDM symbols corresponding to the number of second OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols per slot in the slot may be the number of the second OFDM symbols. ｒｅｐｅａｔ ＰＵＣＣＨ The number of OFDM symbols included in each slot may be the number of the second OFDM symbols. ｓｌｏｔ ｓｙｍｂThe number of first OFDM symbols may be 2, 6, or 7. The first higher layer parameter may be referred to as RepetitionFactor-r17 or Nrofslots-r17. The second higher layer parameter may be referred to as RepetitionFactor2-r17 or Nrofsubslots. The PUCCH resource may be configured by some or all of the higher layer parameter PUCCH-Resource, the higher layer parameter PUCCH-ResourceExt-r16, the higher layer parameter PUCCH-ResourceExt-r17, and the higher layer parameter PUCCH-ResourceExt.

[0297] In the third means, N is determined when subslotLengthForPUCCH is set for PUCCH-Config corresponding to PUCCH. ｒｅｐｅａｔ ＰＵＣＣＨ is determined when the subslotLengthForPUCCH is not set. ｒｅｐｅａｔ ＰＵＣＣＨ In addition, if the subslotLengthForPUCCH is not configured, N ｒｅｐｅａｔ ＰＵＣＣＨ may be determined by Nrofslots-r17. Also, when the subslotLengthForPUCCH is configured, N ｒｅｐｅａｔ ＰＵＣＣＨmay be determined by Nrofsubslots. Nrofslots-r17 and Nrofsubslots may be configured for one PUCCH resource. Nrofsubslots may be ignored if subslotLengthForPUCCH is not configured. Furthermore, Nrofslots-r17 may be ignored if subslotLengthForPUCCH is configured. Nrofslots-r17 may indicate one number of slots from a first set of slot numbers. Nrofsubslots may indicate one number of subslots from a second set of subslot numbers. One or more integer values ​​included in the first set of slot numbers may be different from one or more integer values ​​included in the second set of subslot numbers. Furthermore, the number of values ​​that can be selected by the Nrofslots-r17 may be different from the number of values ​​that can be selected by the Nrofsubslots.

[0298] In the means 3, the first number of slots may be determined based at least on a first higher layer parameter in a PUCCH resource corresponding to the PUCCH. The second number of slots may be determined based at least on a second higher layer parameter in a PUCCH resource corresponding to the PUCCH. When subslotLengthForPUCCH is configured for PUCCH-Config corresponding to the PUCCH, the number of slots through which the PUCCH is transmitted may be the first number of slots. That is, the first number of slots may be the number of subslots. Furthermore, when subslotLengthForPUCCH is configured, each of the slots through which the PUCCH is transmitted may be a subslot. When subslotLengthForPUCCH is not configured for PUCCH-Config corresponding to the PUCCH, the number of slots through which the PUCCH is transmitted may be the second number of slots.

[0299] In the means 3, a first upper layer parameter and a second upper layer parameter may be configured for a PUCCH resource corresponding to the PUCCH. If subslotLengthForPUCCH is configured for PUCCH-Config corresponding to the PUCCH, the number of one slot may be determined based at least on the first upper layer parameter. If subslotLengthForPUCCH is not configured, the number of one slot may be determined based at least on the second upper layer parameter. The number of slots in which the PUCCH is transmitted may be the number of one slot. If subslotLengthForPUCCH is configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted may be the first number of OFDM symbols. If the subslotLengthForPUCCH is not configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted may be a second number of OFDM symbols. The first number of OFDM symbols may be given by the subslotLengthForPUCCH. The second number of OFDM symbols may be N ｓｌｏｔ ｓｙｍｂ The first upper layer parameter may be different from the second upper layer parameter. The first upper layer parameter may be different from or independent of the second upper layer parameter.

[0300] Various aspects of the device according to one aspect of this embodiment will be described below.

[0301] (1) In order to achieve the above object, aspects of the present invention provide the following means. That is, a first aspect of the present invention is a terminal device comprising: a receiver unit that receives a PDCCH including a DCI format instructing transmission of a PUCCH; and a transmitter unit that transmits the PUCCH; wherein a certain higher layer parameter is set for a PUCCH resource corresponding to the PUCCH, the certain higher layer parameter selecting one number of slots from one set including one or more integer values, the number of slots in which the PUCCH is transmitted is the one number of slots; and a PUCCH-Config corresponding to the PUCCH. When subslotLengthForPUCCH is configured for a slot, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols, and when the subslotLengthForPUCCH is not configured, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols, where the first number of OFDM symbols is given by the subslotLengthForPUCCH and the second number of OFDM symbols is N ｓｌｏｔ ｓｙｍｂ and the set includes at least 7. The set also includes at least 1, 3, 5, 6, and 7.

[0302] (2) A second aspect of the present invention is a terminal device comprising: a receiving unit that receives a PDCCH including a DCI format that instructs transmission of a PUCCH; and a transmitting unit that transmits the PUCCH, wherein a certain higher layer parameter is set for a PUCCH resource corresponding to the PUCCH, and the number of slots is determined based at least on the certain higher layer parameter and whether or not subslotLengthForPUCCH is set for a PUCCH-Config corresponding to the PUCCH, and the number of slots in which the PUCCH is transmitted is determined based on the number of slots in which the PUCCH is transmitted. the number of slots, and when the subslotLengthForPUCCH is set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols, and when the subslotLengthForPUCCH is not set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols, the first number of OFDM symbols being given by the subslotLengthForPUCCH, and the second number of OFDM symbols being N ｓｌｏｔ ｓｙｍｂ The number of slots when the subslotLengthForPUCCH is set is different from the number of slots when the subslotLengthForPUCCH is not set.

[0303] (3) A third aspect of the present invention is a terminal device comprising: a receiving unit that receives a PDCCH including a DCI format that instructs transmission of a PUCCH; and a transmitting unit that transmits the PUCCH. When a first upper layer parameter and a second upper layer parameter are set for a PUCCH resource corresponding to the PUCCH and subslotLengthForPUCCH is set for a PUCCH-Config corresponding to the PUCCH, the number of slots is determined based at least on the first upper layer parameter; and when the subslotLengthForPUCCH is not set, the number of slots is determined based at least on the second upper layer parameter. The number of one slot is determined based on the subslotLengthForPUCCH, and the number of slots in which the PUCCH is transmitted is the number of one slot. If the subslotLengthForPUCCH is set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols. If the subslotLengthForPUCCH is not set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols. The first number of OFDM symbols is given by the subslotLengthForPUCCH, and the second number of OFDM symbols is N. ｓｌｏｔ ｓｙｍｂ and the first upper layer parameter is different from the second upper layer parameter.

[0304] (4) A fourth aspect of the present invention is a base station device, comprising: a transmitter that transmits a PDCCH including a DCI format that instructs transmission of a PUCCH; and a receiver that receives the PUCCH, wherein a certain upper layer parameter is set for a PUCCH resource corresponding to the PUCCH, the certain upper layer parameter indicates one slot number among a plurality of slot numbers, the number of slots in which the PUCCH is transmitted is the one slot number, and a su is set for a PUCCH-Config corresponding to the PUCCH. When subslotLengthForPUCCH is set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols, and when the subslotLengthForPUCCH is not set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols, the first number of OFDM symbols being given by the subslotLengthForPUCCH and the second number of OFDM symbols being N ｓｌｏｔ ｓｙｍｂ and the number of slots is 7. The number of slots may be 1, 2, 3, 4, 5, 6, 7, or 8.

[0305] (5) A fifth aspect of the present invention is a base station device, comprising: a transmitter that transmits a PDCCH including a DCI format that instructs transmission of a PUCCH; and a receiver that receives the PUCCH, wherein a certain higher layer parameter is set for a PUCCH resource corresponding to the PUCCH, and the number of slots is determined based at least on the certain higher layer parameter and whether or not subslotLengthForPUCCH is set for a PUCCH-Config corresponding to the PUCCH, and the number of slots in which the PUCCH is transmitted is determined as follows: The number of OFDM symbols included in each slot in which the PUCCH is transmitted is one slot number, and when the subslotLengthForPUCCH is set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols. When the subslotLengthForPUCCH is not set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols. The first number of OFDM symbols is given by the subslotLengthForPUCCH, and the second number of OFDM symbols is N ｓｌｏｔ ｓｙｍｂ The number of slots when the subslotLengthForPUCCH is set is different from the number of slots when the subslotLengthForPUCCH is not set.

[0306] (6) A sixth aspect of the present invention is a base station device comprising: a receiving unit that transmits a PDCCH including a DCI format that instructs transmission of a PUCCH; and a receiving unit that receives the PUCCH. When a first upper layer parameter and a second upper layer parameter are set for a PUCCH resource corresponding to the PUCCH and subslotLengthForPUCCH is set for a PUCCH-Config corresponding to the PUCCH, the number of slots is determined based at least on the first upper layer parameter; and when the subslotLengthForPUCCH is not set, the number of slots is determined based at least on the second upper layer parameter. The number of one slot is determined based on the subslotLengthForPUCCH, and the number of slots in which the PUCCH is transmitted is the number of one slot. If the subslotLengthForPUCCH is set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a first number of OFDM symbols. If the subslotLengthForPUCCH is not set, the number of OFDM symbols included in each slot in which the PUCCH is transmitted is a second number of OFDM symbols. The first number of OFDM symbols is given by the subslotLengthForPUCCH, and the second number of OFDM symbols is N. ｓｌｏｔ ｓｙｍｂ and the first upper layer parameter is different from the second upper layer parameter.

[0307] The programs running on the base station device 3 and terminal device 1 according to one aspect of the present invention may be programs (programs that cause a computer to function) that control a CPU (Central Processing Unit) or the like so as to realize the functions of the above-described embodiment according to one aspect of the present invention. Information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) or HDD (Hard Disk Drive), and is read, modified, and written by the CPU as needed.

[0308] Note that a part of the terminal device 1 and the base station device 3 in the above-described embodiment may be realized by a computer. In this case, a program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed to realize the function.

[0309] The "computer system" referred to here is a computer system built into the terminal device 1 or base station device 3, and includes hardware such as the OS and peripheral devices. Also, the "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, CD-ROMs, and storage devices such as hard disks built into the computer system.

[0310] Furthermore, the term "computer-readable recording medium" may include a medium that dynamically stores a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, or a medium that stores a program for a fixed period of time, such as volatile memory within a computer system that serves as a server or client in such a case. The program may also be one that realizes part of the above-mentioned functions, or one that can realize the above-mentioned functions in combination with a program already stored in the computer system.

[0311] Furthermore, the base station device 3 in the above-described embodiment can also be realized as a collection (device group) consisting of multiple devices. Each of the devices constituting the device group may have some or all of the functions or functional blocks of the base station device 3 according to the above-described embodiment. It is sufficient for the device group to have all of the functions or functional blocks of the base station device 3. Furthermore, the terminal device 1 according to the above-described embodiment can also communicate with the base station device as a collection.

[0312] Furthermore, the base station device 3 in the above-described embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or an NG-RAN (NextGen RAN, NR RAN). Furthermore, the base station device 3 in the above-described embodiment may have some or all of the functions of an upper node for an eNodeB and / or a gNB.

[0313] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiments may be realized as an LSI, which is typically an integrated circuit, or as a chipset. Each functional block of the terminal device 1 and base station device 3 may be individually formed into a chip, or some or all of them may be integrated into a chip. Furthermore, the integrated circuit method is not limited to LSI, and may be realized using a dedicated circuit or a general-purpose processor. Furthermore, if an integrated circuit technology that can replace LSI emerges due to advances in semiconductor technology, it is also possible to use an integrated circuit based on that technology.

[0314] Furthermore, in the above-described embodiment, a terminal device is described as an example of a communication device, but the present invention is not limited to this and can also be applied to terminal devices or communication devices such as stationary or non-movable electronic devices installed indoors or outdoors, for example, AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other household appliances.

[0315] Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design modifications and the like are also included within the scope of the gist of the present invention. Furthermore, various modifications of one aspect of the present invention are possible within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, configurations in which elements described in the above embodiments are substituted with elements that achieve the same effect are also included.

[0316] One aspect of the present invention can be used, for example, in a communication system, a communication device (e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (e.g., a communication chip), or a program.

[0317] 1 (1A, 1B, 1C) Terminal device 3 Base station device 10, 30 Radio transmission / reception unit 10a, 30a Radio transmission unit 10b, 30b Radio reception unit 11, 31 Antenna unit 12, 32 RF unit 13, 33 Baseband unit 14, 34 Upper layer processing unit 15, 35 Medium access control layer processing unit 16, 36 Radio resource control layer processing unit 91, 92, 93, 94 Search space set 300 Component carrier 301 Primary cell 302, 303 Secondary cell 3000 Point 3001, 3002 Resource grid 3003, 3004 BWP 3011, 3012, 3013, 3014 Offset 3100, 3200 Common resource block set 9000, 9001, 9002, 9003, 9004, 9005, 9006, 9007, 9008, 9009, 9010, 9011, 9012, 9013, 9100, 9101, 9102, 9103, 9200, 9201, 100 00, 10001, 10002, 10003, 10004, 10005, 10006, 10007, 10008, 10009, 10010, 10011, 10100, 10101, 10102, 10103, 10200, 10201 PUCCH 9300, 9301, 9302, 9303, 9304, 9305, 9306, 9307, 9308, 9309, 9310, 9311, 9312, 9313, 9400, 9401, 9402, 9403, 10300, 10301, 10302, 10303, 10304, 10305, 10306, 10307, ​​10308, 10309, 10310, 10311, 10400, 10401, 10402, 10403 Sub-slots 9500, 9501, 10500, 10501 Slots

Claims

1. A receiving unit that receives a PDCCH including a DCI format for instructing transmission of a PUCCH; A transmitting unit that transmits the PUCCH, and Both a first upper layer parameter and a second upper layer parameter are set for a PUCCH resource corresponding to the PUCCH, The first upper layer parameter sets a first number of slots, The second upper layer parameter sets a second number of slots, When subslotLengthForPUCCH is set for a PUCCH-Config corresponding to the PUCCH, the number of slots in which the PUCCH is transmitted is the first number of slots, and the number of OFDM symbols included in each of the slots is a first number of OFDM symbols, When subslotLengthForPUCCH is not set, the number of slots in which the PUCCH is transmitted is the second number of slots, and the number of OFDM symbols included in each of the slots is a second number of OFDM symbols, The first number of OFDM symbols is given by the subslotLengthForPUCCH, The second number of OFDM symbols is N ｓｌｏｔ ｓｙｍｂ given by, A terminal device.

2. A transmitting unit that transmits a PDCCH including a DCI format for instructing transmission of a PUCCH; A receiving unit that receives the PUCCH, and Both a first upper layer parameter and a second upper layer parameter are set for a PUCCH resource corresponding to the PUCCH, The first upper layer parameter sets a first number of slots, The second upper layer parameter sets a second number of slots, When subslotLengthForPUCCH is set for the PUCCH-Config corresponding to the PUCCH, the number of slots in which the PUCCH is transmitted is the first number of slots, and the number of OFDM symbols included in each of the slots is the first number of OFDM symbols. When subslotLengthForPUCCH is not set, the number of slots in which the PUCCH is transmitted is the second number of slots, and the number of OFDM symbols included in each of the slots is the second number of OFDM symbols. The first number of OFDM symbols is given by subslotLengthForPUCCH. The second number of OFDM symbols is N ｓｌｏｔ ｓｙｍｂ given by. Base station device.

3. A communication method used in a terminal device, comprising: receiving a PDCCH including a DCI format for instructing transmission of a PUCCH; transmitting the PUCCH, both a first upper layer parameter and a second upper layer parameter are set for the PUCCH resource corresponding to the PUCCH, the first upper layer parameter sets a first number of slots, the second upper layer parameter sets a second number of slots, When subslotLengthForPUCCH is set for the PUCCH-Config corresponding to the PUCCH, the number of slots in which the PUCCH is transmitted is the first number of slots, and the number of OFDM symbols included in each of the slots is the first number of OFDM symbols. When subslotLengthForPUCCH is not set, the number of slots in which the PUCCH is transmitted is the second number of slots, and the number of OFDM symbols included in each of the slots is the second number of OFDM symbols. The number of the first OFDM symbols is given by the subsLotLengthForPUCCH, The number of the second OFDM symbols is N ｓｌｏｔ ｓｙｍｂ given by Communication method.