Terminal device, base station device, and communication method

Abstract

The terminal device of the present invention includes: a receiving unit that receives a PDCCH in a DCI format including a frequency resource allocation field, and determines not to schedule a PDSCH by this DCI format at least based on all of the frequency resource allocation fields being set to 1; and a transmitting unit that transmits a HARQ-ACK codebook through a PUCCH at least based on all of the frequency resource allocation fields being set to 1.

Description

Technical Field

[0001] The present invention relates to a terminal device, a base station device, and a communication method.

[0002] This application claims priority to Japanese Patent Application No. 2019-129118, filed on July 11, 2019, in Japan, the content of which is incorporated herein by reference. Background Art

[0003] In the Third Generation Partnership Project (3GPP), research has been conducted on radio access methods and radio networks for cellular mobile communications (hereinafter referred to as "Long Term Evolution (LTE)" or "Evolved Universal Terrestrial Radio Access (EUTRA)"). In LTE, the base station device is also called an eNodeB (evolved NodeB), and the terminal device is also called a UE (User Equipment). LTE is a cellular communication system in which areas covered by a plurality of base station devices are arranged in a cell shape. A single base station device can manage multiple serving cells.

[0004] In 3GPP, in order to make recommendations to IMT (International Mobile Telecommunication)-2020, which is a next-generation mobile communication system standard established by the International Telecommunication Union (ITU), a review has been conducted on the next-generation standard (NR: New Radio) (Non-Patent Document 1). NR is required to meet the requirements assumed for the following three scenarios in a single technical framework: eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication).

[0005] Prior Art Documents

[0006] Non-Patent Documents

[0007] Non-Patent Document 1: "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT docomo, 3GPP TSG RAN Meeting#71, Goteborg, Sweden, 7th - 10th March, 2016. Summary of the Invention

[0008] Problems to be Solved by the Invention

[0009] One aspect of the present invention provides a terminal device for performing communication efficiently, a communication method for the terminal device, a base station device for performing communication efficiently, and a communication method for the base station device.

[0010] Technical Solution

[0011] (1) The first aspect of the present invention is a terminal device, comprising: a receiving unit that receives a PDCCH in a DCI format including a frequency resource allocation field, and determines not to schedule a PDSCH by the DCI format at least based on all of the frequency resource allocation fields being set to 1; and a transmitting unit that transmits a HARQ-ACK codebook through a PUCCH at least based on all of the frequency resource allocation fields being set to 1.

[0012] (2) The second aspect of the present invention is a communication method for a terminal device, comprising the following steps: receiving a PDCCH in a DCI format including a frequency resource allocation field; determining not to schedule a PDSCH by the DCI format at least based on all of the frequency resource allocation fields being set to 1; and transmitting a HARQ-ACK codebook through a PUCCH at least based on all of the frequency resource allocation fields being set to 1.

[0013] Advantageous Effects

[0014] According to one aspect of the present invention, the terminal device can perform communication efficiently. In addition, the base station device can perform communication efficiently. Description of the Drawings

[0015] Figure 1 It is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment.

[0016] Figure 2 It shows an example of the relationship between the set μ of the subcarrier spacing, the number N of OFDM symbols per time slot slot symb and the setting of the CP (cyclic Prefix) according to one aspect of the present embodiment.

[0017] Figure 3 This is a diagram showing an example of a method for constructing a resource grid for one aspect of the present embodiment.

[0018] Figure 4 This is a diagram showing a configuration example of the resource grid 3001 for one aspect of the present embodiment.

[0019] Figure 5 This is a schematic block diagram showing a configuration example of the base station device 3 for one aspect of the present embodiment.

[0020] Figure 6 This is a schematic block diagram showing a configuration example of the terminal device 1 for one aspect of the present embodiment.

[0021] Figure 7 This is a diagram showing a configuration example of the SS / PBCH block for one aspect of the present embodiment.

[0022] Figure 8 This is a diagram showing a setting example of the PRACH resource for one aspect of the present embodiment.

[0023] Figure 9 This is a diagram showing, for one aspect of the present embodiment, 1) the number N of random access preambles allocated to each PRACH opportunity for random access RO preamble is 64; 2) the number N of preambles for contention-based random access allocated to each SS / PBCH block candidate SSB preamble，CBRA is 64; 3) the number N of PRACH opportunities for contention-based random access allocated to each SS / PBCH block candidate SSB RO is 1; and 4) a diagram showing an example of the relationship (SS-RO association) between the index of the SS / PBCH block candidate and the PRACH opportunity when the first bitmap information is set to {1, 1, 0, 1, 0, 1, 1, 0}.

[0024] Figure 10 This is a diagram showing, for one aspect of the present embodiment, 1) the number N of random access preambles allocated to each PRACH opportunity for random access RO preamble is 64; 2) the number N of preambles for contention-based random access allocated to each SS / PBCH block candidate SSB preamble，CBRA is 64; 3) the number N of PRACH opportunities for contention-based random access allocated to each SS / PBCH block candidate SSB ROA diagram showing an example of the relationship between the index of the SS / PBCH block candidate and the PRACH opportunity when the first bitmap information is set to {1, 1, 0, 1, 0, 1, 0, 0}; and 4).

[0025] Figure 11 A diagram showing an example of the monitoring opportunity of the search area set representing one aspect of this embodiment.

[0026] Figure 12 A diagram showing an example of the counting process representing one aspect of this embodiment.

[0027] Figure 13 A diagram showing an example related to the resource allocation of the PDSCH representing one aspect of this embodiment.

[0028] Figure 14 A diagram showing a configuration example of the single-trigger HARQ-ACK information representing one aspect of this embodiment.

[0029] Figure 15 A diagram showing a configuration example of the single-trigger HARQ-ACK information representing one aspect of this embodiment.

[0030] Figure 16 A diagram showing a configuration example of the fields of DCI format 0_0 representing one aspect of this embodiment. Detailed Embodiment

[0031] Hereinafter, embodiments of the present invention will be described.

[0032] "A and / or B" may be a term including "A", "B", or "A and B". floor(C) may be the floor function for the real number C. For example, floor(C) may be a function that outputs the largest integer within the range not exceeding the real number C. ceil(D) may be the ceiling function for the real number D. For example, ceil(D) may be a function that outputs the smallest integer within the range not less than D. mod(E, F) may be a function that outputs the remainder obtained by dividing E by F. mod(E, F) may also be a function that outputs a value corresponding to the remainder obtained by dividing E by F. exp(G)=e^G. Here, e is the Napier's number. H^I represents the I-th power of H.

[0033] In a wireless communication system according to one aspect of the present embodiment, OFDM (Orthogonal Frequency Division Multiplex) is used at least. An OFDM symbol is a unit in the time domain of OFDM. An 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, CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplex) is used at least. In the uplink, either CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex) is used. DFT-s-OFDM can be obtained by applying transform precoding to CP-OFDM.

[0034] The OFDM symbol may be a name including the CP added to the OFDM symbol. That is, a certain OFDM symbol may be configured to include the certain OFDM symbol and the CP added to the certain OFDM symbol.

[0035] Figure 1 It is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. In Figure 1 the wireless communication system is configured to include at least the terminal devices 1A to 1C and the base station device 3 (BS#3: Base station #3). Hereinafter, the terminal devices 1A to 1C will also be referred to as the terminal device 1 (UE#1: User Equipment #1).

[0036] The base station device 3 may be configured to include one or more transmission devices (or transmission points, transceiver devices, transceiver points). When the base station device 3 is composed of a plurality of transmission devices, the plurality of transmission devices may be respectively arranged at different positions.

[0037] The base station device 3 may provide one or more serving cells. A serving cell may be defined as a set of resources for wireless communication. In addition, the serving cell is also referred to as a cell.

[0038] A serving cell may be configured to include at least one downlink component carrier (downlink carrier) and / or one uplink component carrier (uplink carrier). A serving cell may also be configured to include at least two or more downlink component carriers and / or two or more uplink component carriers. The downlink component carrier and the uplink component carrier are also referred to as component carriers (carriers).

[0039] For example, a resource grid may be given for one component carrier. In addition, a resource grid may also be given for one component carrier and a subcarrier spacing configuration μ. Here, the subcarrier spacing configuration μ is also referred to as numerology. The resource grid includes N size，μ grid，x N RB sc subcarriers. The resource grid starts from the common resource block N start，μ grid The common resource block N start，μ grid is also referred to as the reference point of the resource grid. The resource grid includes N subframe，μ symb OFDM symbols. x is a subscript representing the transmission direction, indicating either the downlink or the uplink. A resource grid is given for a set of a certain antenna port p, a certain subcarrier spacing configuration μ, and a certain transmission direction x.

[0040] N size，μ grid，x and N start，μ grid are given at least based on the upper layer parameter (Carrier Bandwidth: carrier bandwidth). This upper layer parameter is also referred to as the SCS specific carrier. One resource grid corresponds to one SCS specific carrier. One component carrier may have one or more SCS specific carriers. The SCS specific carriers may be included in the system information. A subcarrier spacing configuration μ may be given for each SCS specific carrier.

[0041] The subcarrier spacing (SCS: SubCarrier Spacing) Δf may be Δf = 2 μ ·15 kHz. For example, the subcarrier spacing configuration μ may represent any one of 0, 1, 2, 3, or 4.

[0042] Figure 2 is the subcarrier spacing configuration μ representing a solution of this embodiment, the number of OFDM symbols N per time slot slot symbAn example of the relationship with the CP (cyclic Prefix) setting. In Figure 2 A, for example, when the subcarrier spacing setting μ is 2 and the CP setting is normal cyclic prefix (conventional cyclic prefix), N slot symb = 14, N frame， μ slot = 40, N subframe，μ slot = 4. In addition, in Figure 2 B, for example, when the subcarrier spacing setting μ is 2 and the CP setting is extended cyclic prefix (extended cyclic prefix), N slot symb = 12, N frame，μ slot = 40, N subframe，μ slot = 4.

[0043] In a wireless communication system according to an aspect of the present embodiment, a time unit T c can be used to represent the length in the time domain. The time unit T c is T c = 1 / (Δf max ·N f ). Δf max = 480 kHz. N f = 4096. The constant κ is κ = Δf max ·N f / (Δf ref N f，ref ) = 64. Δf ref is 15 kHz. N f，ref is 2048.

[0044] The transmission of signals in the downlink and / or the transmission of signals in the uplink can be composed of (organized into) wireless frames (system frames, frames) of length T f . T f = (Δf max N f / 100)·T s = 10 ms. “·” represents multiplication. The wireless frame is configured to include 10 subframes. The length of the subframe is T sf = (Δf max N f / 1000)·T s = 0 ms. The number of OFDM symbols in each subframe is N subframe，μ symb = Nslot symb N subframe，μ slot 。

[0045] The number and index of time slots included in a subframe can be given for setting μ of a certain subcarrier spacing. For example, the time slot index n μ s can be given in ascending order as integer values in the range of 0 to N subframe，μ slot -1 in the subframe. The number and index of time slots included in a radio frame can also be given for setting μ of a subcarrier spacing. In addition, the time slot index n μ s，f can also be given in ascending order as integer values in the range of 0 to N frame，μ slot -1 in the radio frame. A consecutive N slot symb OFDM symbols can be included in one time slot. N slot symb = 14.

[0046] Figure 3 is a diagram showing an example of a method for constructing a resource grid representing one aspect of the present embodiment. Figure 3 The horizontal axis of represents the frequency domain. In Figure 3 , a configuration example of a resource grid for a subcarrier spacing μ1 in a component carrier 300 and a configuration example of a resource grid for a subcarrier spacing μ2 in a certain component carrier are shown. Thus, one or more subcarrier spacings can be set for a certain component carrier. In Figure 3 , it is assumed that μ1 = μ2 - 1, but various aspects of the present embodiment are not limited to the condition of μ1 = μ 2- 1.

[0047] The component carrier 300 is a frequency band having a prescribed width in the frequency domain.

[0048] The point 3000 is an identifier for determining a certain subcarrier. The point 3000 is also referred to as point A. The common resource block (CRB: Common resource block) set 3100 is a set of common resource blocks for setting μ1 of a subcarrier spacing.

[0049] The common resource block in the common resource block set 3100 that includes the point 3000 (the block indicated by the upper right diagonal line in Figure 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 can also be the common resource block with index 0 in the common resource block set 3100.

[0050] 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 represented by the number of common resource blocks for the set μ1 of subcarrier spacing. The resource grid 3001 includes N size，μ grid1，x common resource blocks starting from the reference point of the resource grid 3001.

[0051] Offset 3013 is the offset from the reference point of the resource grid 3001 to the reference point of the BWP (BandWidth Part) 3003 of index i1 (N start，μ BWP，i1 ).

[0052] The common resource block set 3200 is a set of common resource blocks for the set μ2 of subcarrier spacing.

[0053] The common resource block in the common resource block set 3200 that includes point 3000 (the block represented by the upper left diagonal line in Figure 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 can also be the common resource block of index 0 in the common resource block set 3200.

[0054] 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 represented by the number of common resource blocks for the subcarrier spacing μ2. The resource grid 3002 includes N size，μ grid2，x common resource blocks starting from the reference point of the resource grid 3002.

[0055] Offset 3014 is the offset from the reference point of the resource grid 3002 to the reference point of the BWP 3004 of index i2 (N start，μ BWP，i2 ).

[0056] Figure 4 is a diagram showing a configuration example of the resource grid 3001 representing one aspect of this embodiment. In the Figure 4 resource grid, the horizontal axis is the OFDM symbol index l sym , and the vertical axis is the subcarrier index k sc . The resource grid 3001 includes N size，μ grid1，x N RB sc subcarriers and includes N subframe，μ symb OFDM symbols. Within the resource grid, through the subcarrier index k sc and the OFDM symbol index l symA determined resource is called a resource element (RE).

[0057] A resource block (RB) includes N RB sc consecutive subcarriers. The resource block is a general term for a common resource block, a physical resource block (PRB), and a virtual resource block (VRB). Here, N RB SC = 12.

[0058] A resource block unit is a set of resources corresponding to one OFDM symbol in a resource block. That is, one resource block unit includes 12 resource elements corresponding to one OFDM symbol in a resource block.

[0059] For the common resource block with a set μ of a certain subcarrier spacing, in a certain common resource block set, indexing is added in ascending order starting from 0 in the frequency domain. The common resource block with index 0 for a set μ of a certain subcarrier spacing includes (or competes, coincides with) point 3000. The index n of the common resource block with a set μ of a certain subcarrier spacing μ CRB satisfies n μ CRB = ceil(k sc / N RB sc ) relationship. Here, k sc = 0 subcarrier is a subcarrier having the same center frequency as the center frequency of the subcarrier corresponding to point 3000.

[0060] For the physical resource block with a set μ of a certain subcarrier spacing, in a certain BWP, indexing is added in ascending order starting from 0 in the frequency domain. The index n of the physical resource block with a set μ of a certain subcarrier spacing μ PRB satisfies n μ CRB = n μ PRB + N start ，μ BWP，i relationship. Here, N start，μ BWP，i represents the reference point of the BWP with index i.

[0061] The BWP is defined as a subset of the common resource blocks included in the resource grid. The BWP includes N starting from the reference point N of this BWP start，μ BWP，i startingsize，μ BWP，i A common resource block. 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.

[0062] An antenna port can be defined as follows: 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, the channel can correspond to a physical channel. Additionally, the symbol can also correspond to an OFDM symbol. Additionally, the symbol can also correspond to a resource block unit. Additionally, the symbol can also correspond to a resource element.

[0063] The large scale property of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on another antenna port, which is referred to as the two antenna ports being QCL (Quasi Co-Located). The large scale property can at least include the long-term characteristics of the channel. The large scale property can also at least include some or all of the delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. The first antenna port and the second antenna port being QCL with respect to the beam parameters can mean that the receiving beam assumed by the receiving side for the first antenna port is the same as the receiving beam assumed by the receiving side for the second antenna port. The first antenna port and the second antenna port being QCL with respect to the beam parameters can also mean that the transmitting beam assumed by the receiving side for the first antenna port is the same as the transmitting beam assumed by the receiving side for the second antenna port. The terminal device 1 can assume that the two antenna ports are QCL when the large scale property of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on another antenna port. The two antenna ports being QCL can also be assumed to be QCL.

[0064] Carrier aggregation can be communication using multiple serving cells that are aggregated. Additionally, carrier aggregation can also be communication using multiple component carriers that are aggregated. Additionally, carrier aggregation can also be communication using multiple downlink component carriers that are aggregated. Additionally, carrier aggregation can also be communication using multiple uplink component carriers that are aggregated.

[0065] Figure 5 is a schematic block diagram showing a configuration example of a base station device 3 representing one aspect of this embodiment. As Figure 5 shown, the base station device 3 includes at least a part or all of a wireless transceiver unit (physical layer processing unit) 30 and / or an upper layer processing unit 34. The wireless transceiver unit 30 includes at least a part or all of an antenna unit 31, an RF (Radio Frequency) unit 32, and a baseband unit 33. The upper layer processing unit 34 includes at least a part or all of a media access control layer processing unit 35 and a radio resource control (RRC: Radio Resource Control) layer processing unit 36.

[0066] The wireless transceiver unit 30 includes at least a part or all of a wireless transmission unit 30a and a wireless reception unit 30b. Here, the device configurations of the baseband unit included in the wireless transmission unit 30a and the baseband unit included in the wireless reception unit 30b may be the same or different. Additionally, the device configurations of the RF unit included in the wireless transmission unit 30a and the RF unit included in the wireless reception unit 30b may be the same or different. Additionally, the device configurations of the antenna unit included in the wireless transmission unit 30a and the antenna unit included in the wireless reception unit 30b may be the same or different.

[0067] For example, the wireless transmission unit 30a can generate and transmit a baseband signal of PDSCH. For example, the wireless transmission unit 30a can also generate and transmit a baseband signal of PDCCH. For example, the wireless transmission unit 30a can also generate and transmit a baseband signal of PBCH. For example, the wireless transmission unit 30a can also generate and transmit a baseband signal of a synchronization signal. For example, the wireless transmission unit 30a can also generate and transmit a baseband signal of PDSCH DMRS. For example, the wireless transmission unit 30a can also generate and transmit a baseband signal of PDCCH DMRS. For example, the wireless transmission unit 30a can also generate and transmit a baseband signal of CSI-RS. For example, the wireless transmission unit 30a can further generate and transmit a baseband signal of DL PTRS.

[0068] For example, the wireless transmission unit 30b can receive a PRACH. For example, the wireless transmission unit 30b can also receive and demodulate a PUCCH. The wireless transmission unit 30b can also receive and demodulate a PUSCH. For example, the wireless transmission unit 30b can also receive PUCCH DMRS. For example, the wireless transmission unit 30b can also receive PUSCH DMRS. For example, the wireless transmission unit 30b can also receive ULPTRS. For example, the wireless transmission unit 30b can also receive an SRS.

[0069] The upper layer processing unit 34 outputs downlink data (transport block) to the wireless transceiver unit 30 (or the wireless transmission unit 30a). The upper layer processing unit 34 performs processing of the MAC (Medium Access Control) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.

[0070] The medium access control layer processing unit 35 included in the upper layer processing unit 34 performs MAC layer processing.

[0071] The radio resource control layer processing unit 36 included in the upper layer processing unit 34 performs RRC layer processing. 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 RRC parameters based on the RRC message received from the terminal device 1.

[0072] The wireless transceiver unit 30 (or the wireless transmission unit 30a) performs processing such as modulation and coding. The wireless transceiver unit 30 (or the wireless transmission unit 30a) generates a physical signal by modulating, coding, and generating a baseband signal (conversion to a time - continuous signal) for the downlink data, and transmits it to the terminal device 1. The wireless transceiver unit 30 (or the wireless transmission unit 30a) can configure the physical signal to a certain component carrier and transmit it to the terminal device 1.

[0073] The wireless transceiver unit 30 (or the wireless reception unit 30b) performs processing such as demodulation and decoding. The wireless transceiver unit 30 (or the wireless reception unit 30b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 34. The wireless transceiver unit 30 (or the wireless reception unit 30b) can perform a channel access procedure before the transmission of the physical signal.

[0074] The RF unit 32 converts (down-converts) the signal received via the antenna unit 31 into a baseband signal through quadrature demodulation, and removes unnecessary frequency components. The RF unit 32 outputs the processed analog signal to the baseband unit.

[0075] The baseband unit 33 converts the analog signal input from the RF unit 32 into a digital signal. The baseband unit 33 removes the part corresponding to the CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT: Fast Fourier Transform) on the signal after removing the CP, and extracts the signal in the frequency domain.

[0076] The baseband unit 33 performs an inverse fast Fourier transform (IFFT: Inverse Fast Fourier Transform) on the data, generates an OFDM symbol, appends a CP to the generated OFDM symbol to generate a digital signal in the baseband, and converts the digital signal in the baseband into an analog signal. The baseband unit 33 outputs the converted analog signal to the RF unit 32.

[0077] The RF unit 32 uses a low-pass filter to remove excess frequency components from the analog signal input from the baseband unit 33, up-converts the analog signal to the carrier frequency, and transmits it via the antenna unit 31. In addition, the RF unit 32 may also have a function of controlling the transmission power. The RF unit 32 is also referred to as the transmission power control unit.

[0078] One or more serving cells (or component carriers, downlink component carriers, uplink component carriers) can be set for the terminal device 1.

[0079] Each of the serving cells set for the terminal device 1 can be any one of a PCell (Primary cell, primary cell), a PSCell (Primary SCG cell, primary SCG cell), and an SCell (Secondary Cell, secondary cell).

[0080] The PCell is a serving cell included in the MCG (Master Cell Group: master cell group). The PCell is the cell (the cell where the operation has been performed) through which the terminal device 1 performs an initial connection establishment procedure or a connection re-establishment procedure.

[0081] A PSCell is the serving cell included in an SCG (Secondary Cell Group). The PSCell is the serving cell in which random access is performed by the terminal device 1 during a reconfiguration with synchronization process.

[0082] An SCell can be included in either an MCG or an SCG.

[0083] A serving cell group (cell group) is a term that includes at least an MCG and an SCG. The serving cell group can include one or more serving cells (or component carriers). One or more serving cells (or component carriers) included in the serving cell group can be utilized through carrier aggregation.

[0084] One or more downlink BWPs can be configured for each serving cell (or downlink component carrier). One or more uplink BWPs can be configured for each serving cell (or uplink component carrier).

[0085] One of the one or more downlink BWPs configured for a serving cell (or downlink component carrier) can be configured as an active downlink BWP (or one downlink BWP can be activated). One of the one or more uplink BWPs configured for a serving cell (or uplink component carrier) can be configured as an active uplink BWP (or one uplink BWP can be activated).

[0086] PDSCH, PDCCH, and CSI-RS can be received in the active downlink BWP. The terminal device 1 can receive PDSCH, PDCCH, and CSI-RS in the active downlink BWP. PUCCH and PUSCH can be transmitted in the active uplink BWP. The terminal device 1 can transmit PUCCH and PUSCH in the active uplink BWP. The active downlink BWP and the active uplink BWP are also referred to as the active BWP.

[0087] The PDSCH, PDCCH, and CSI-RS may also not be received in a downlink BWP other than the active downlink BWP (inactive downlink BWP). The terminal device 1 may also not receive the PDSCH, PDCCH, and CSI-RS in a downlink BWP other than the active downlink BWP. The PUCCH and PUSCH may also not be transmitted in an uplink BWP other than the active uplink BWP (inactive uplink BWP). The terminal device 1 may also not transmit the PUCCH and PUSCH in an uplink BWP other than the active uplink BWP. The inactive downlink BWP and the inactive uplink BWP are also referred to as inactive BWPs.

[0088] The downlink BWP switch is used to deactivate an active downlink BWP and activate any one of the inactive downlink BWPs other than the active downlink BWP. The downlink BWP switch can be controlled by the BWP field included in the downlink control information. The downlink BWP switch can also be controlled based on upper layer parameters.

[0089] The uplink BWP switch is used to deactivate an active uplink BWP and activate any one of the inactive uplink BWPs other than the active uplink BWP. The uplink BWP switch can be controlled by the BWP field included in the downlink control information. The uplink BWP switch can also be controlled based on upper layer parameters.

[0090] Two or more of the one or more downlink BWPs set for the serving cell may not be set as the active downlink BWP. It may be that one downlink BWP is activated for the serving cell at a certain time.

[0091] Two or more of the one or more uplink BWPs set for the serving cell may not be set as the active uplink BWP. It may be that one uplink BWP is activated for the serving cell at a certain time.

[0092] Figure 6 It is a schematic block diagram showing a configuration example of the terminal device 1 which is a solution of this embodiment. As Figure 6As shown, the terminal device 1 includes at least one or both of a wireless transceiver unit (physical layer processing unit) 10 and an upper layer processing unit 14. The wireless transceiver unit 10 includes at least a part or all of an antenna unit 11, an RF unit 12, and a baseband unit 13. The upper layer processing unit 14 includes at least a part or all of a media access control layer processing unit 15 and a radio resource control layer processing unit 16.

[0093] The wireless transceiver unit 10 includes at least a part or all of a wireless transmission unit 10a and a wireless reception unit 10b. Here, the device configurations of the baseband unit 13 included in the wireless transmission unit 10a and the baseband unit 13 included in the wireless reception unit 10b may be the same or different. In addition, the device configurations of the RF unit 12 included in the wireless transmission unit 10a and the RF unit 12 included in the wireless reception unit 10b may be the same or different. In addition, the device configurations of the antenna unit 11 included in the wireless transmission unit 10a and the antenna unit 11 included in the wireless reception unit 10b may be the same or different.

[0094] For example, the wireless transmission unit 10a may generate and transmit a baseband signal of a PRACH. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUCCH. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUSCH. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUCCH DMRS. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUSCH DMRS. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a ULPTRS. For example, the wireless transmission unit 10a may further generate and transmit a baseband signal of an SRS.

[0095] For example, the wireless reception unit 10b may receive and demodulate a PDSCH. For example, the wireless reception unit 10b may also receive and demodulate a PDCCH. For example, the wireless reception unit 10b may also receive and demodulate a PBCH. For example, the wireless reception unit 10b may also receive a synchronization signal. For example, the wireless reception unit 10b may also receive a PDSCH DMRS. For example, the wireless reception unit 10b may also receive a PDCCH DMRS. For example, the wireless reception unit 10b may also receive a CSI-RS. For example, the wireless reception unit 10b may further receive a DLPTRS.

[0096] The upper layer processing unit 14 outputs uplink data (transport block) to the wireless transceiver unit 10 (or the wireless transmission unit 10a). The upper layer processing unit 14 performs processing of the MAC layer, packet data convergence protocol layer, radio link control layer, and RRC layer.

[0097] The media access control layer processing unit 15 included in the upper layer processing unit 14 performs processing of the MAC layer.

[0098] The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs RRC layer processing. 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 RRC parameters based on the RRC message received from the base station device 3.

[0099] The wireless transceiver unit 10 (or the wireless transmission unit 10a) performs processing such as modulation and encoding. The wireless transceiver unit 10 (or the wireless transmission unit 10a) generates a physical signal by modulating, encoding, and generating a baseband signal (conversion to a time-continuous signal) the uplink data, and transmits it to the base station device 3. The wireless transceiver unit 10 (or the wireless transmission unit 10a) may configure the physical signal to a certain BWP (activate the uplink BWP) and transmit it to the base station device 3.

[0100] The wireless transceiver unit 10 (or the wireless reception unit 10b) performs processing such as demodulation and decoding. The wireless transceiver unit 10 (or the wireless reception unit 30b) may receive a physical signal in a certain BWP (activate the downlink BWP) of a certain serving cell. The wireless transceiver unit 10 (or the wireless reception unit 10b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. The wireless transceiver unit 10 (the wireless reception unit 10b) may perform a channel access procedure before the transmission of the physical signal.

[0101] The RF unit 12 converts (down-converts) the signal received via the antenna unit 11 into a baseband signal by quadrature demodulation, and removes unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit 13.

[0102] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes the part equivalent to the CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT: Fast Fourier Transform) on the signal after removing the CP, and extracts the signal in the frequency domain.

[0103] The baseband unit 13 performs an inverse fast Fourier transform (IFFT: Inverse Fast Fourier Transform) on the uplink data, generates an OFDM symbol, adds a CP to the generated OFDM symbol to generate a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0104] The RF unit 12 uses a low-pass filter to remove redundant frequency components from the analog signal input by the baseband unit 13, up-converts the analog signal to a carrier frequency, and transmits it via the antenna unit 11. In addition, the RF unit 12 may also have a function of controlling the transmission power. The RF unit 12 is also referred to as a transmission power control unit.

[0105] Hereinafter, the physical signal (signal) will be described.

[0106] The physical signal is a general term for the downlink physical channel, the downlink physical signal, the uplink physical channel, and the uplink physical channel. The physical channel is a general term for the downlink physical channel and the uplink physical channel. The physical signal is a general term for the downlink physical signal and the uplink physical signal.

[0107] The uplink physical channel can correspond to a set of resource elements carrying information generated at the upper layer. The uplink physical channel can be a physical channel used in the uplink component carrier. The uplink physical channel can be transmitted by the terminal device 1. The uplink physical channel can be received by the base station device 3. In the wireless communication system of one aspect of the present embodiment, at least a part or all of the following uplink physical channels can be used.

[0108] · PUCCH (Physical Uplink Control CHannel)

[0109] · PUSCH (Physical Uplink Shared CHannel)

[0110] · PRACH (Physical Random Access CHannel)

[0111] The PUCCH (PUCCH resource) can be used to transmit uplink control information (UCI: Uplink Control Information). The PUCCH can be transmitted for delivering uplink control information. The uplink control information can be mapped to the PUCCH. The terminal device 1 can transmit the PUCCH configured with the uplink control information. The base station device 3 can receive the PUCCH configured with the uplink control information.

[0112] The uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) at least includes part or all of the channel state information (CSI: Channel State Information), scheduling request (SR: Scheduling Request), and HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) information.

[0113] The channel state information is also referred to as channel state information bits or channel state information sequence. The scheduling request is also referred to as scheduling request bits or scheduling request sequence. The HARQ-ACK information is also referred to as HARQ-ACK information bits or HARQ-ACK information sequence.

[0114] The HARQ-ACK information may include HARQ-ACK corresponding to a transport block (or TB: Transport block, MAC PDU: Medium Access Control Protocol Data Unit, DL-SCH: Downlink-Shared Channel, UL-SCH: Uplink-Shared Channel, PDSCH: Physical Downlink Shared Channel, PUSCH: Physical Uplink Shared Channel). The HARQ-ACK may represent an ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to the transport block. The ACK may indicate that the decoding of the transport block has been successfully completed. The NACK may indicate that the decoding of the transport block has not been successfully completed. The HARQ-ACK information may also include a HARQ-ACK codebook containing one or more HARQ-ACK bits.

[0115] The HARQ-ACK information corresponding to the transport block may mean that the HARQ-ACK information corresponds to the PDSCH used for the transmission of the transport block.

[0116] The HARQ-ACK may also represent an ACK or NACK corresponding to one CBG (Code Block Group) included in the transport block.

[0117] The scheduling request can be used at least to request resources for a PUSCH (or UL-SCH) for an initial transmission. The scheduling request bit can be used to indicate either a positive SR or a negative SR. The scheduling request bit indicating a positive SR is also referred to as "sending a positive SR". A positive SR can indicate resources for a PUSCH (or UL-SCH) requested by the terminal device 1 for an initial transmission. A positive SR can also indicate that a scheduling request is triggered by the upper layer. In the case of indicating that a scheduling request is sent by the upper layer, a positive SR can be sent. The scheduling request bit indicating a negative SR is also referred to as "sending a negative SR". A negative SR can indicate that resources for a PUSCH (or UL-SCH) for an initial transmission are not requested by the terminal device 1. A negative SR can also indicate that a scheduling request is not triggered by the upper layer. In the case of not indicating that a scheduling request is sent by the upper layer, a negative SR can be sent.

[0118] The channel state information can include at least a part or all of a channel quality indicator (CQI: Channel Quality Indicator), a precoder matrix indicator (PMI: Precoder Matrix Indicator), and a rank indicator (RI: Rank Indicator). The CQI is an indicator associated with the quality of a transmission path (e.g., transmission strength) or the quality of a physical channel. The PMI is an indicator associated with precoding. The RI is an indicator associated with the transmission rank (or the number of transmission layers).

[0119] The channel state information can be given at least based on receiving a physical signal (e.g., CSI-RS) used at least for channel measurement. The channel state information can be selected by the terminal device 1 at least based on receiving a physical signal used at least for channel measurement. The channel measurement can include interference measurement.

[0120] The PUCCH can correspond to a PUCCH format. The PUCCH can be a set of resource elements for carrying the PUCCH format. The PUCCH can include the PUCCH format.

[0121] The PUSCH can be used to transmit transport blocks and / or uplink control information. The PUSCH can also be used to transmit transport blocks corresponding to the UL-SCH and / or uplink control information. The PUSCH can also be used to carry transport blocks and / or uplink control information. The PUSCH can also be used to carry transport blocks corresponding to the UL-SCH and / or uplink control information. The transport block can be configured on the PUSCH. The transport block corresponding to the UL-SCH can also be configured on the PUSCH. The uplink control information can be configured on the PUSCH. The terminal device 1 can transmit the PUSCH configured with the transport block and / or uplink control information. The base station device 3 can receive the PUSCH configured with the transport block and / or uplink control information.

[0122] The PRACH can be used to transmit a random access preamble. The PRACH can also be used to carry a random access preamble. The sequence x u，v (n) of the PRACH is defined by x u，v (n) = x u (mod(n + C v , L RA ))). x u can be a ZC (Zadoff Chu) sequence. x u is defined by x u = exp(-jπui(i + 1) / L RA ). j is the imaginary unit. In addition, π is the ratio of a circle's circumference to its diameter. C v corresponds to the cyclic shift of the PRACH sequence. L RA corresponds to the length of the PRACH sequence. L RA is 839 or 139. i is an integer in the range of 0 to L RA - 1. U is the sequence index for the PRACH sequence. The terminal device 1 can transmit the PRACH. The base station device 3 can receive the PRACH.

[0123] Sixty-four random access preambles are defined for a certain PRACH opportunity. The random access preamble is determined (decided, given) based at least on the cyclic shift C v of the PRACH sequence and the sequence index u for the PRACH sequence.

[0124] The uplink physical signal can correspond to a set of resource elements. The uplink physical signal may not carry information generated at the upper layer. The uplink physical signal can be a physical signal used in the uplink component carrier. The terminal device 1 can transmit the uplink physical signal. The base station device 3 can receive the uplink physical signal. In the wireless communication system of one aspect of this embodiment, at least a part or all of the following uplink physical signals can be used.

[0125] ·UL DMRS (UpLink Demodulation Reference Signal)

[0126] ·SRS (Sounding Reference Signal)

[0127] ·UL PTRS (UpLink Phase Tracking Reference Signal)

[0128] UL DMRS is the general term for the DMRS for PUSCH and the DMRS for PUCCH.

[0129] The set of antenna ports of the DMRS for PUSCH (the DMRS associated with PUSCH, the DMRS included in PUSCH, the DMRS corresponding to PUSCH) can be given based on the set of antenna ports for that PUSCH. That is, the set of antenna ports of the DMRS for PUSCH can be the same as the set of antenna ports of that PUSCH.

[0130] The transmission of PUSCH and the transmission of the DMRS for that PUSCH can be represented (or scheduled) by one DCI format. PUSCH and the DMRS for that PUSCH can be collectively referred to as PUSCH. Transmitting PUSCH can also be transmitting PUSCH and the DMRS for that PUSCH.

[0131] PUSCH can be estimated based on the DMRS for that PUSCH. That is, the propagation path of PUSCH can be estimated based on the DMRS for that PUSCH.

[0132] The set of antenna ports of the DMRS for PUCCH (the DMRS associated with PUCCH, the DMRS included in PUCCH, the DMRS corresponding to PUCCH) can be the same as the set of antenna ports of PUCCH.

[0133] The transmission of PUCCH and the transmission of the DMRS for that PUCCH can be indicated (or triggered) by one DCI format. The resource element mapping of PUCCH and / or the resource element mapping of the DMRS for that PUCCH can be given by one PUCCH format. PUCCH and the DMRS for that PUCCH can be collectively referred to as PUCCH. Transmitting PUCCH can also be transmitting PUCCH and the DMRS for that PUCCH.

[0134] The PUCCH can be estimated based on the DMRS used for the PUCCH. That is to say, the transmission path of the PUCCH can be estimated based on the DMRS used for the PUCCH.

[0135] The downlink physical channel can correspond to a set of resource elements carrying information generated at the upper layer. The downlink physical channel can be a physical channel used in a downlink component carrier. The base station device 3 can transmit the downlink physical channel. The terminal device 1 can receive the downlink physical channel. At least a part or all of the following downlink physical channels can be used in a wireless communication system according to one aspect of the present embodiment.

[0136] ·PBCH (Physical Broadcast Channel)

[0137] ·PDCCH (Physical Downlink Control Channel)

[0138] ·PDSCH (Physical Downlink Shared Channel)

[0139] The PBCH can be used to transmit the MIB (MIB: Master Information Block) and / or physical layer control information. The PBCH can be transmitted to deliver the MIB and / or physical layer control information. The BCH can be mapped to the PBCH. The terminal device 1 can receive the PBCH configured with the MIB and / or physical layer control information. The base station device 3 can transmit the PBCH configured with the MIB and / or physical layer control information. The physical layer control information is also referred to as the PBCH payload, the PBCH payload related to timing. The MIB can include one or more upper layer parameters.

[0140] The physical layer control information includes 8 bits. The physical layer control information can at least include a part or all of the following 0A to 0D.

[0141] 0A) Radio frame bit

[0142] 0B) Half radio frame (half system frame, half frame) bit

[0143] 0C) SS / PBCH block index bit

[0144] 0D) Subcarrier offset bit

[0145] The radio frame bits are used to indicate the radio frame in which the PBCH is transmitted (including the radio frame of the time slot in which the PBCH is transmitted). The radio frame bits include 4 bits. The radio frame bits may be constituted by 4 bits among 10-bit radio frame indicators. For example, the radio frame indicator may be used at least to determine the radio frames with indexes from 0 to 1023.

[0146] The semi-radio frame bits are used to indicate in which of the first half of 5 subframes or the second half of 5 subframes in the radio frame in which the PBCH is transmitted, the PBCH is transmitted. Here, the semi-radio frame may be configured to include 5 subframes. In addition, the semi-radio frame may be constituted by the first half of 5 subframes among the 10 subframes included in the radio frame. In addition, the semi-radio frame may also be constituted by the second half of 5 subframes among the 10 subframes included in the radio frame.

[0147] 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 also be constituted by 3 bits among 6-bit SS / PBCH block index indicators. The SS / PBCH block index indicator may be used at least to determine the SS / PBCH blocks with indexes from 0 to 63.

[0148] The subcarrier offset bits are used to indicate the subcarrier offset. The subcarrier offset may also be used to indicate the difference between the subcarrier of the starting point of the mapped PBCH and the subcarrier of the starting point of the control resource set of mapped index 0.

[0149] The PDCCH may be used to transmit downlink control information (DCI: Downlink Control Information). The PDCCH may be transmitted for delivering (deliver, transmission, convey) downlink control information. The downlink control information may be configured (map) on the PDCCH. The terminal device 1 may receive the PDCCH configured with downlink control information. The base station device 3 may transmit the PDCCH configured with downlink control information.

[0150] The downlink control information may correspond to the DCI format. The downlink control information may be included in the DCI format. The downlink control information may be configured in each field.

[0151] The DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats that are respectively sets of different fields. The uplink DCI format is the general term for the DCI format 0_0 and the DCI format 0_1. The downlink DCI format is the general term for the DCI format 1_0 and the DCI format 1_1.

[0152] DCI format 0_0 is used for scheduling at least the PUSCH of a certain cell (or configured for a certain cell). DCI format 0_0 is composed of at least a part or all of the fields from 1A to 1E.

[0153] 1A) DCI format specific field (Identifier field for DCI formats)

[0154] 1B) Frequency domain resource assignment field

[0155] 1C) Time domain resource assignment field

[0156] 1D) Frequency hopping flag field

[0157] 1E) MCS field (MCS field: Modulation and Coding Scheme field: Modulation and coding scheme field)

[0158] The DCI format specific field can indicate whether the DCI format including this DCI format specific field is an uplink DCI format or a downlink DCI format. The DCI format specific field included in DCI format 0_0 can indicate 0 (or can indicate that DCI format 0_0 is an uplink DCI format).

[0159] The frequency domain resource assignment field included in DCI format 0_0 can be used at least to indicate the allocation of frequency resources for the PUSCH.

[0160] The time domain resource assignment field included in DCI format 0_0 can be used at least to indicate the allocation of time resources for the PUSCH.

[0161] The frequency hopping flag field can be used at least to indicate whether frequency hopping is applied to the PUSCH.

[0162] The MCS field included in DCI format 0_0 can be used at least to indicate a part or all of the modulation method and / or the target coding rate for the PUSCH. This target coding rate can be the target coding rate of the transport block for the PUSCH. The size of the transport block (TBS: Transport Block Size) of the PUSCH can be given at least based on a part or all of this target coding rate and the modulation method for this PUSCH.

[0163] DCI format 0_0 may also not include a field for CSI request. That is to say, CSI may also not be requested through DCI format 0_0.

[0164] DCI format 0_0 may also not include a carrier indicator field. That is to say, the uplink component carrier configured with a PUSCH scheduled by DCI format 0_0 may be the same as the uplink component carrier configured with a PDCCH including this DCI format 0_0.

[0165] DCI format 0_0 may also not include a BWP field. That is to say, the uplink BWP configured with a PUSCH scheduled by DCI format 0_0 may be the same as the uplink BWP configured with a PDCCH including this DCI format 0_0.

[0166] DCI format 0_1 is at least used for the scheduling of a PUSCH (configured in a certain cell) in a certain cell. DCI format 0_1 is configured to include at least a part or all of the fields from 2A to 2H.

[0167] 2A) DCI format specific field

[0168] 2B) Frequency domain resource allocation field

[0169] 2C) Time domain resource allocation field for uplink

[0170] 2D) Frequency hopping flag field

[0171] 2E) MCS field

[0172] 2F) CSI request field

[0173] 2G) BWP field

[0174] 2H) Carrier indicator field

[0175] The DCI format specific field included in DCI format 0_1 may indicate 0 (or may indicate that DCI format 0_1 is an uplink DCI format).

[0176] The frequency domain resource allocation field included in DCI format 0_1 may be at least used to indicate the allocation of frequency resources for the PUSCH.

[0177] The time domain resource allocation field included in DCI format 0_1 may be at least used to indicate the allocation of time resources for the PUSCH.

[0178] The MCS field included in DCI format 0_1 can be used to indicate at least a part or all of the modulation mode and / or the target coding rate for the PUSCH.

[0179] When the BWP field is included in DCI format 0_1, the BWP field can be used to indicate the uplink BWP configured with the PUSCH. When the BWP field is not included in DCI format 0_1, the uplink BWP configured with the PUSCH can be the same as the uplink BWP of the PDCCH including DCI format 0_1 for scheduling the PUSCH. It can be that when the number of uplink BWPs assigned to the terminal device 1 in a certain uplink component carrier is 2 or more, the number of bits of the BWP field included in DCI format 0_1 for scheduling the PUSCH configured for the certain uplink component carrier is 1 bit or more. It can also be that when the number of uplink BWPs assigned to the terminal device 1 in a certain uplink component carrier is 1, the number of bits of the BWP field included in DCI format 0_1 for scheduling the PUSCH configured for the certain uplink component carrier is 0 bits (or it can also be that the BWP field is not included in DCI format 0_1 for scheduling the PUSCH configured for the certain uplink component carrier).

[0180] The CSI request field is at least used to indicate the reporting of CSI.

[0181] It can be that when the carrier indicator field is included in DCI format 0_1, the carrier indicator field is used to indicate the uplink component carrier configured with the PUSCH. It can also be that when the carrier indicator field is not included in DCI format 0_1, the uplink component carrier configured with the PUSCH is the same as the uplink component carrier of the PDCCH including DCI format 0_1 for scheduling the PUSCH. It can also be that when the number of uplink component carriers assigned to the terminal device 1 in a certain serving cell group is 2 or more (when carrier aggregation is applied in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 0_1 for scheduling the PUSCH configured for the certain serving cell group is 1 bit or more (for example, 3 bits). It can also be that when the number of uplink component carriers assigned to the terminal device 1 in a certain serving cell group is 1 (when carrier aggregation is not applied in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 0_1 for scheduling the PUSCH configured for the certain serving cell group is 0 (or it can also be that the carrier indicator field is not included in DCI format 0_1 for scheduling the PUSCH configured for the certain serving cell group).

[0182] DCI format 1_0 is used for scheduling the PDSCH (configured for a certain cell) of at least one cell. DCI format 1_0 is configured to include at least a part or all of 3A to 3F.

[0183] 3A) DCI format specific field

[0184] 3B) Frequency domain resource allocation field

[0185] 3C) Time domain resource allocation field

[0186] 3D) MCS field

[0187] 3E) PDSCH_HARQ feedback timing indicator field

[0188] 3F) PUCCH resource indicator field

[0189] The DCI format specific field included in DCI format 1_0 may indicate 1 (or may indicate that DCI format 1_0 is a downlink DCI format).

[0190] The frequency domain resource allocation field included in DCI format 1_0 can be used at least to indicate the allocation of frequency resources for the PDSCH.

[0191] The time domain resource allocation field included in DCI format 1_0 can be used at least to indicate the allocation of time resources for the PDSCH.

[0192] The MCS field included in DCI format 1_0 can be used at least to indicate a part or all of the modulation method and / or target coding rate for the PDSCH. The target coding rate can be the target coding rate for the transport block of the PDSCH. The size of the transport block of the PDSCH (TBS: Transport Block Size) can be given based on at least a part or all of the target coding rate and the modulation method for the PDSCH.

[0193] The PDSCH_HARQ feedback timing indicator field can be used at least to indicate the offset from the time slot of the last OFDM symbol including the PDSCH to the time slot of the OFDM symbol including the start point of the PUCCH.

[0194] The PUCCH resource indicator field can be a field indicating any index of one or more PUCCH resources included in the PUCCH resource set. The PUCCH resource set can include one or more PUCCH resources.

[0195] DCI format 1_0 may also not include a carrier indicator field. That is to say, the downlink component carrier configured with a PDSCH scheduled by DCI format 1_0 may be the same as the downlink component carrier configured with a PDCCH including this DCI format 1_0.

[0196] DCI format 1_0 may also not include a BWP field. That is to say, the downlink BWP configured with a PDSCH scheduled by DCI format 1_0 may be the same as the downlink BWP configured with a PDCCH including this DCI format 1_0.

[0197] DCI format 1_1 is at least used for scheduling the PDSCH of a certain cell (or configured for a certain cell). DCI format 1_1 may at least include a part or all of 4A to 4I.

[0198] 4A) DCI format specific field

[0199] 4B) Frequency domain resource allocation field

[0200] 4C) Time domain resource allocation field

[0201] 4E) MCS field

[0202] 4F) PDSCH_HARQ feedback timing indication field

[0203] 4G) PUCCH resource indication field

[0204] 4H) BWP field

[0205] 4I) Carrier indicator field

[0206] The DCI format specific field included in DCI format 1_1 may indicate 1 (or may indicate that DCI format 1_1 is a downlink DCI format).

[0207] The frequency domain resource allocation field included in DCI format 1_1 may at least be used to indicate the allocation of frequency resources for the PDSCH.

[0208] The time domain resource allocation field included in DCI format 1_1 may at least be used to indicate the allocation of time resources for the PDSCH.

[0209] The MCS field included in DCI format 1_1 may at least be used to indicate a part or all of the modulation method and / or target coding rate for the PDSCH.

[0210] It may be that, when the PDSCH_HARQ feedback timing indication field is included in DCI format 1_1, the PDSCH_HARQ feedback timing indication field is at least used to indicate the offset from the time slot of the last OFDM symbol including the PDSCH to the time slot of the OFDM symbol at the start of the PUCCH. It may also be that, when the PDSCH_HARQ feedback timing indication field is not included in DCI format 1_1, the offset from the time slot of the last OFDM symbol including the PDSCH to the time slot of the OFDM symbol at the start of the PUCCH is determined by a parameter of the upper layer.

[0211] The PUCCH resource indication field may be a field indicating any index among one or more PUCCH resources included in the PUCCH resource set.

[0212] It may be that, when the BWP field is included in DCI format 1_1, the BWP field is used to indicate the downlink BWP configured with the PDSCH. It may also be that, when the BWP field is not included in DCI format 1_1, the downlink BWP configured with the PDSCH is the same as the downlink BWP of the PDCCH configured with DCI format 1_1 including the scheduling for the PDSCH. It may also be that, when the number of downlink BWPs set for the terminal device 1 in a certain downlink component carrier is 2 or more, the number of bits of the BWP field included in DCI format 1_1 for the scheduling of the PDSCH configured for the certain downlink component carrier is 1 bit or more. It may also be that, when the number of downlink BWPs set for the terminal device 1 in a certain downlink component carrier is 1, the number of bits of the BWP field included in DCI format 1_1 for the scheduling of the PDSCH configured for the certain downlink component carrier is 0 bit (or it may also be that the BWP field is not included in DCI format 1_1 for the scheduling of the PDSCH configured for the certain downlink component carrier).

[0213] It may be that, when a carrier indicator field is included in DCI format 1_1, the carrier indicator field is used to indicate a downlink component carrier configured with PDSCH. It may also be that, when a carrier indicator field is not included in DCI format 1_1, the downlink component carrier configured with PDSCH is the same as the downlink component carrier of the PDCCH configured with DCI format 1_1 including the scheduling for the PDSCH. It may also be that, when the number of downlink component carriers assigned to the terminal device 1 in a certain serving cell group is 2 or more (when carrier aggregation of the downlink is applied in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 1_1 for scheduling the PDSCH configured for the certain serving cell group is 1 bit or more (for example, 3 bits). It may also be that, when the number of downlink component carriers assigned to the terminal device 1 in a certain serving cell group is 1 (when carrier aggregation of the downlink is not applied in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 1_1 for scheduling the PDSCH configured for the certain serving cell group is 0 (or, it may be that a carrier indicator field is not included in DCI format 1_1 for scheduling the PDSCH configured for the certain serving cell group).

[0214] The PDSCH can be used to transmit a transport block. The PDSCH can also be used to transmit a transport block corresponding to the DL-SCH. The PDSCH can be used to deliver a transport block. The PDSCH can also be used to deliver a transport block corresponding to the DL-SCH. The transport block can be configured on the PDSCH. The transport block corresponding to the DL-SCH can also be configured on the PDSCH. The base station device 3 can transmit the PDSCH. The terminal device 1 can receive the PDSCH.

[0215] The downlink physical signal can correspond to a set of resource elements. The downlink physical signal may not carry information generated at the upper layer. The downlink physical signal can be a physical signal used in a downlink component carrier. The downlink physical signal can be transmitted by the base station device 3. The downlink physical signal can also be transmitted by the terminal device 1. At least a part or all of the following downlink physical signals can be used in the radio communication system of one aspect of the present embodiment.

[0216] · Synchronization signal (SS)

[0217] · DL DMRS (DownLink DeModulation Reference Signal)

[0218] ·CSI-RS (Channel State Information-Reference Signal)

[0219] ·DL PTRS (DownLink Phase Tracking Reference Signal)

[0220] The synchronization signal can be used at least for the terminal device 1 to obtain the synchronization in the frequency domain and / or time domain of the downlink. The synchronization signal is a general term for the PSS (Primary Synchronization Signal) and the SSS (Secondary Synchronization Signal).

[0221] Figure 7 It is a diagram showing a configuration example of an SS / PBCH block representing one aspect of the present embodiment. In Figure 7 it, the horizontal axis is the time axis (OFDM symbol index l sym ), and the vertical axis represents the frequency domain. In addition, the slanted blocks represent the set of resource elements for the PSS. In addition, the grid blocks represent the set of resource elements for the SSS. In addition, the horizontal blocks represent the set of resource elements for the PBCH and the DMRS for the PBCH (the DMRS associated with the PBCH, the DMRS included in the PBCH, the DMRS corresponding to the PBCH).

[0222] As Figure 7As shown, the SS / PBCH block includes the PSS, SSS, and PBCH. In addition, the SS / PBCH block includes 4 consecutive OFDM symbols. The SS / PBCH block includes 240 subcarriers. The PSS is configured on subcarriers 57 to 183 in the first OFDM symbol. The SSS is configured on subcarriers 57 to 183 in the third OFDM symbol. Subcarriers 1 to 56 in the first OFDM symbol can be set to zero. Subcarriers 184 to 240 in the first OFDM symbol can also be set to zero. Subcarriers 49 to 56 in the third OFDM symbol can also be set to zero. Subcarriers 184 to 192 in the third OFDM symbol can also be set to zero. The PBCH is configured on subcarriers 1 to 240 in the second OFDM symbol that are not configured with the DMRS for the PBCH. The PBCH is configured on subcarriers 1 to 48 in the third OFDM symbol that are not configured with the DMRS for the PBCH. The PBCH is configured on subcarriers 193 to 240 in the third OFDM symbol that are not configured with the DMRS for the PBCH. The PBCH is configured on subcarriers 1 to 240 in the fourth OFDM symbol that are not configured with the DMRS for the PBCH.

[0223] The antenna ports of the PSS, SSS, PBCH, and the DMRS for the PBCH can be the same.

[0224] The PBCH that transmits the symbol of the PBCH in a certain antenna port can be estimated based on the DMRS for the PBCH that is configured for the time slot mapping the PBCH and included in the SS / PBCH block that includes the PBCH.

[0225] DL DMRS is the general term for the DMRS for the PBCH, the DMRS for the PDSCH, and the DMRS for the PDCCH.

[0226] The set of antenna ports of the DMRS for the PDSCH (the DMRS associated with the PDSCH, the DMRS included in the PDSCH, the DMRS corresponding to the PDSCH) can be given based on the set of antenna ports for the PDSCH. That is, the set of antenna ports of the DMRS for the PDSCH can be the same as the set of antenna ports for the PDSCH.

[0227] The transmission of the PDSCH and the transmission of the DMRS for the PDSCH can be indicated (or scheduled) by one DCI format. The PDSCH and the DMRS for the PDSCH can be collectively referred to as the PDSCH. Transmitting the PDSCH can also be transmitting the PDSCH and the DMRS for the PDSCH.

[0228] The PDSCH can be estimated based on the DMRS for the PDSCH. That is to say, the transmission path of the PDSCH can be estimated based on the DMRS for the PDSCH. If the set of resource elements of the symbol for transmitting a certain PDSCH and the set of resource elements of the symbol for transmitting the DMRS for the certain PDSCH are included in the same precoding resource group (PRG: Precoding Resource Group), then the PDSCH for transmitting the symbol of the PDSCH in a certain antenna port can be estimated based on the DMRS for the PDSCH.

[0229] The antenna port for the DMRS for the PDCCH (the DMRS associated with the PDCCH, the DMRS included in the PDCCH, the DMRS corresponding to the PDCCH) can be the same as the antenna port for the PDCCH.

[0230] The PDCCH can be estimated based on the DMRS for the PDCCH. That is to say, the transmission path of the PDCCH can be estimated based on the DMRS for the PDCCH. If the same precoding is applied (assumed to be applied, assumed as applied) in the set of resource elements of the symbol for transmitting a certain PDCCH and the set of resource elements of the symbol for transmitting the DMRS for the certain PDCCH, then the PDCCH for transmitting the symbol of the PDCCH in a certain antenna port can be estimated based on the DMRS for the PDCCH.

[0231] BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels. The channels used in the MAC layer are called transport channels. The unit of the transport channel used in the MAC layer is also called a transport block (TB) or a MAC PDU (Protocol Data Unit). HARQ (Hybrid Automatic Repeat reQuest) control is performed for each transport block in the MAC layer. A transport block is the unit of data delivered by the MAC layer to the physical layer. In the physical layer, the transport block is mapped to a codeword and modulation processing is performed for each codeword.

[0232] One UL-SCH and one DL-SCH can be given for each serving cell. The BCH can be given by the PCell. The BCH can also not be given by the PSCell or the SCell.

[0233] BCCH (Broadcast Control Channel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is a channel of the RRC layer used to transmit the MIB or system information. In addition, CCCH (Common Control Channel) can be used to transmit RRC messages common to multiple terminal devices 1. Here, CCCH can be used, for example, for terminal devices 1 that are not in an RRC connection. In addition, DCCH (Dedicated Control Channel) can be used at least to transmit RRC messages dedicated to terminal device 1. Here, DCCH can be used, for example, for terminal device 1 in an RRC connection.

[0234] RRC messages include one or more RRC parameters (information elements). For example, an RRC message can include the MIB. In addition, an RRC message can also include system information. In addition, an RRC message can also include a message corresponding to CCCH. In addition, an RRC message can also include a message corresponding to DCCH. An RRC message including a message corresponding to DCCH is also referred to as a dedicated RRC message. For example, the system information can be SIB1 (System Information Block Type 1).

[0235] BCCH in the logical channel can be mapped to BCH or DL-SCH in the transport channel. CCCH in the logical channel can be mapped to DL-SCH or UL-SCH in the transport channel. DCCH in the logical channel can be mapped to DL-SCH or UL-SCH in the transport channel.

[0236] UL-SCH in the transport channel can be mapped to PUSCH in the physical channel. DL-SCH in the transport channel can be mapped to PDSCH in the physical channel. BCH in the transport channel can be mapped to PBCH in the physical channel.

[0237] Upper layer parameters (parameters of the upper layer) are parameters included in RRC messages or MAC CE (Medium Access Control Control Element). That is to say, upper layer parameters are the general term for the information included in the MIB, system information, messages corresponding to CCCH, messages corresponding to DCCH, and MAC CE.

[0238] The processes performed by the terminal device 1 at least include a part or all of the following 5A to 5C.

[0239] 5A) Cell search

[0240] 5B) Random access

[0241] 5C) Data communication

[0242] Cell search is a process for the terminal device 1 to synchronize with a certain cell related to time domain and frequency domain and detect the physical cell identity. That is to say, the terminal device 1 can perform synchronization with a certain cell in time domain and frequency domain through cell search and detect the physical cell identity.

[0243] The sequence of PSS is given at least based on the physical cell identity. The sequence of SSS is given at least based on the physical cell identity.

[0244] The SS / PBCH block candidate indicates a resource that allows (can, reserves, sets, specifies, has the possibility of) the transmission of the SS / PBCH block.

[0245] The set of SS / PBCH block candidates in a certain semi-wireless frame is also called an SS burst set. The SS burst set is also called a transmission window, an SS transmission window, or a DRS transmission window. The SS burst set is a general term that at least includes a first SS burst set and a second SS burst set.

[0246] The base station device 3 transmits one or more indexed SS / PBCH blocks at a specified period. The terminal device 1 can detect at least any one of the one or more indexed SS / PBCH blocks and attempt to decode the PBCH included in the SS / PBCH block.

[0247] Random access is a process that at least includes a part or all of Message 1, Message 2, Message 3, and Message 4.

[0248] Message 1 is a process for the terminal device 1 to transmit a PRACH. The terminal device 1 transmits a PRACH in one PRACH opportunity selected from one or more PRACH opportunities at least based on the index of the SS / PBCH block candidate, where the index of the SS / PBCH block candidate is detected based on cell search.

[0249] The setting of the PRACH opportunity may include at least the PRACH configuration period (PCF) T PCF , the number N of PRACH opportunities included in the time domain of a certain PRACH configuration period PCF RO，t , the number N of PRACH opportunities included in the frequency domain RO，f , the number N of random access preambles allocated to each PRACH opportunity for random access RO preamble , the number N of preambles for contention-based random access (CBRA) allocated to the index of each SS / PBCH block candidate SSB preamble，CBRA and the number N of PRACH opportunities for contention-based random access allocated to the index of each SS / PBCH block candidate SSB RO or some or all of them.

[0250] The time resource and / or frequency resource of a certain PRACH opportunity may be given at least based on the setting of the PRACH opportunity.

[0251] The association between the index of the SS / PBCH block candidate corresponding to the SS / PBCH block detected by the terminal device 1 and the PRACH opportunity may be given at least based on the first bitmap information (the first bitmap) representing the index of the SS / PBCH block candidate actually used for the transmission of the SS / PBCH block. The terminal device 1 may determine the association between the index of the SS / PBCH block candidate corresponding to the SS / PBCH block detected by the terminal device 1 and the PRACH opportunity at least based on the first bitmap information representing the index of the SS / PBCH block candidate actually used for the transmission of the SS / PBCH block. Each element of the first bitmap information may correspond to the index of a certain SS / PBCH block candidate. For example, the first element of the first bitmap information may correspond to the SS / PBCH block candidate with the index of the SS / PBCH block candidate being 0. For example, the second element of the first bitmap information may correspond to the SS / PBCH block candidate with the index of the SS / PBCH block candidate being 1. For example, the L SSB th element of the first bitmap information may correspond to the SS / PBCH block candidate with the index of the SS / PBCH block candidate being L SSB -1. L SSB is the number of SS / PBCH blocks included in an SS burst set (for example, the first SS burst set).

[0252] Figure 8 This is a diagram showing an example of the setting of PRACH resources for one solution of this embodiment. In Figure 8 the PRACH setting period T PCF is 40 ms, and the number N PCF RO，t of PRACH opportunities included in the time domain of a certain PRACH setting period RO，f is 1, and the number N

[0253] of PRACH opportunities included in the frequency domain is set to 2.

[0254] Figure 9 This is a diagram showing an example of the relationship (SS-RO association) between the index of the SS / PBCH block candidate actually used for the transmission of the SS / PBCH block and the PRACH opportunity in one solution of this embodiment, where 1) the number N RO preamble of random access preambles allocated to each PRACH opportunity for random access is 64, 2) the number N SSB preamble，CBRA of preambles allocated to the index of each SS / PBCH block candidate for contention-based random access is 64, 3) the number N SSB RO of PRACH opportunities allocated to the index of each SS / PBCH block candidate for contention-based random access is 1, and 4) the first bitmap information is set to {1, 1, 0, 1, 0, 1, 1, 0}. In Figure 9 it is assumed that the setting of the PRACH opportunity is the same as that in Figure 8 . In Figure 9 it can be that the SS / PBCH block candidate with index 0 corresponds to the PRACH opportunity with index 0 (RO#0), the SS / PBCH block candidate with index 1 corresponds to the PRACH opportunity with index 1 (RO#1), the SS / PBCH block candidate with index 3 corresponds to the PRACH opportunity with index 2 (RO#2), the SS / PBCH block candidate with index 5 corresponds to the PRACH opportunity with index 3 (RO#3), and the SS / PBCH block candidate with index 6 corresponds to the PRACH opportunity with index 4 (RO#4)). In Figure 9 the PRACH relationship period (PRACH AP: PRACH association period) T APIt is 120 ms for the PRACH opportunities (RO#0 to RO#5) including index 0 to index 4. In Figure 9 the PRACH association pattern period (PRACH APP: PRACH Association Pattern Period) T APP is 160 ms. In Figure 9 the PRACH association pattern period includes one PRACH association period.

[0255] Figure 10 It is a diagram showing an example of the relationship between the index of the SS / PBCH block candidate and the PRACH opportunity in one solution of this embodiment, where 1) the number N RO preamble of the random access preambles allocated to each PRACH opportunity for random access is 64, 2) the number N SSB preamble of the preambles allocated to each SS / PBCH block candidate index for contention-based random access is 64, 3) the number N SSB RO of the PRACH opportunities allocated to each SS / PBCH block candidate index for contention-based random access is 1, and 4) the first bitmap information is set to {1, 1, 0, 1, 0, 1, 0, 0}. In Figure 10 it is assumed that the setting of the PRACH opportunity is the same as Figure 8 . In Figure 10 it can be that the SS / PBCH block candidate of index 0 corresponds to the PRACH opportunity of index 0 (RO#0) and the PRACH opportunity of index 4 (RO#4), the SS / PBCH block candidate of index 1 corresponds to the PRACH opportunity of index 1 (RO#1) and the PRACH opportunity of index 5 (RO#5), the SS / PBCH block candidate of index 3 corresponds to the PRACH opportunity of index 2 (RO#2) and the PRACH opportunity of index 6 (RO#6), and the SS / PBCH block candidate of index 5 corresponds to the PRACH opportunity of index 3 (RO#3) and the PRACH opportunity of index 7 (RO#7). In Figure 10 the PRACH association period T AP is 80 ms for the PRACH opportunities (RO#0 to RO#3) including index 0 to index 3. In Figure 10 the PRACH association pattern period (PRACH APP: PRACH Association Pattern Period) T APP is 160 ms. In Figure 10 the PRACH association pattern period includes two PRACH association periods.

[0256] The SS / PBCH block candidate with the smallest index among the N "SS / PBCH block candidates actually used for transmission of SS / PBCH blocks" indicated by the first bitmap information may correspond to the PRACH opportunity at the starting point (PRACH opportunity with index 0). The nth index among the N "SS / PBCH block candidates actually used for transmission of SS / PBCH blocks" indicated by the first bitmap information may correspond to the nth PRACH opportunity (PRACH opportunity with index n - 1).

[0257] The index of the PRACH opportunity is preferably attached to the frequency axis of the PRACH opportunities included in the PRACH relationship pattern period (Frequency-first time-second).

[0258] When all N "SS / PBCH block candidates actually used for transmission of SS / PBCH blocks" indicated by the first bitmap information are assigned to correspond to at least one PRACH opportunity, it is configured to include a PRACH setting period corresponding to at least one of the PRACH opportunities corresponding to at least one "SS / PBCH block candidate actually used for transmission of SS / PBCH blocks". In Figure 9 wherein, the PRACH opportunities corresponding to at least one "SS / PBCH block candidate actually used for transmission of SS / PBCH blocks" are RO#0 to RO#4, and the PRACH setting period corresponding to at least one of the PRACH opportunities corresponding to at least one "SS / PBCH block candidate actually used for transmission of SS / PBCH blocks" is three PRACH setting periods starting from the starting point. In Figure 10 wherein, the PRACH opportunities corresponding to at least one "SS / PBCH block candidate actually used for transmission of SS / PBCH blocks" are RO#0 to RO#3, and the PRACH setting period corresponding to at least one of the PRACH opportunities corresponding to at least one "SS / PBCH block candidate actually used for transmission of SS / PBCH blocks" is two PRACH setting periods starting from the starting point.

[0259] When the largest integer k satisfying T APP >k*T AP is 2 or more, it is configured that one PRACH relationship pattern period includes k PRACH relationship periods. In Figure 10 wherein, the largest integer k satisfying T APP >k*T AP is 2, the first PRACH relationship period includes two PRACH setting periods starting from the starting point, and the second PRACH relationship period includes two PRACH setting periods starting from the third PRACH setting period.

[0260] The terminal device 1 transmits a random access preamble selected from a PRACH opportunity corresponding to the index of the SS / PBCH block candidate that detects the SS / PBCH block.

[0261] Message 2 is a process in which the terminal device 1 attempts to detect DCI format 1_0 with a CRC (Cyclic Redundancy Check) scrambled by a RA-RNTI (Random Access-Radio Network Temporary Identifier). The terminal device 1 attempts to detect the PDCCH including this DCI format in the resources indicated based on the settings of the control resource set and the search area set, where the settings of the control resource set and the search area set are given based on the MIB of the PBCH included in the SS / PBCH block detected based on cell search.

[0262] Message 3 is a process of transmitting the PUSCH scheduled by the random access response grant included in the DCI format 1_0 detected through the process of Message 2. Here, the random access response grant is indicated by the MAC CE included in the PDSCH scheduled by this DCI format 1_0.

[0263] The PUSCH scheduled based on the random access response grant is either the Message 3 PUSCH or the PUSCH. The Message 3 PUSCH includes a contention resolution identifier MAC CE. The contention resolution identifier MAC CE includes a contention resolution identifier.

[0264] The retransmission of the Message 3 PUSCH is scheduled by DCI format 0_0 with a CRC scrambled based on a TC-RNTI (Temporary Cell-Radio Network Temporary Identifier).

[0265] Message 4 is a process of attempting to detect DCI format 1_0 with a CRC scrambled based on either a C-RNTI (Cell-Radio Network Temporary Identifier) or a TC-RNTI. The terminal device 1 receives the PDSCH scheduled based on this DCI format 1_0. This PDSCH may include a contention resolution identifier.

[0266] Data communication is the general term for downlink communication and uplink communication.

[0267] In data communication, the terminal device 1 attempts to detect the PDCCH (monitor the PDCCH, surveil the PDCCH) in the resources determined based on the control resource set and the search area set.

[0268] The control resource set is a set of resources composed of a specified number of resource blocks and a specified number of OFDM symbols. In the frequency domain, the control resource set can be composed of contiguous resources (non-interleaved mapping), or can be composed of scattered resources (interleaver mapping).

[0269] The set of resource blocks constituting the control resource set can be represented by a higher layer parameter. The number of OFDM symbols constituting the control resource set can also be represented by a higher layer parameter.

[0270] The terminal device 1 attempts to detect the PDCCH in the search area set. Here, attempting to detect the PDCCH in the search area set can be attempting to detect the candidates of the PDCCH in the search area set, can be attempting to detect the DCI format in the search area set, can be attempting to detect the PDCCH in the control resource set, can be attempting to detect the candidates of the PDCCH in the control resource set, or can be attempting to detect the DCI format in the control resource set.

[0271] The search area set is defined as a set of candidates of the PDCCH. The search area set can be a CSS (Common Search Space) set, or can be a USS (UE-specific Search Space) set. The terminal device 1 attempts to detect the candidates of the PDCCH in a part or all of the Type 0 PDCCH common search space set, Type 0a PDCCH common search space set, Type 1 PDCCH common search space set, Type 2 PDCCH common search space set, Type 3 PDCCH common search space set, and / or the UE-specific PDCCH search area set.

[0272] The type 0 PDCCH common search space set can be used as the common search space set with index 0. The type 0 PDCCH common search space set can also be the common search space set with index 0.

[0273] The CSS set is the general term for the type 0 PDCCH common search space set, the type 0a PDCCH common search space set, the type 1 PDCCH common search space set, the type 2 PDCCH common search space set, and the type 3 PDCCH common search space set. The USS set is also referred to as the UE-specific PDCCH search space set.

[0274] A certain search space set is associated with (including, corresponding to) a certain control resource set. The index of the control resource set associated with the search space set can be represented by a higher layer parameter.

[0275] For a certain search space set, at least a part or all of 6A to 6C can be represented by a higher layer parameter.

[0276] 6A) The monitoring periodicity of the PDCCH

[0277] 6B) The monitoring pattern of the PDCCH within a slot

[0278] 6C) The monitoring offset of the PDCCH

[0279] The monitoring occasion of a certain search space set can correspond to the OFDM symbol of the OFDM symbol that configures the start point of the control resource set associated with this certain search space set. The monitoring occasion of a certain search space set can also correspond to the resource of the control resource set starting from the OFDM symbol of the start point of the control resource set associated with a certain search space set. The monitoring occasion of this search space set is given based on at least a part or all of the monitoring periodicity of the PDCCH, the monitoring pattern of the PDCCH within a slot, and the monitoring offset of the PDCCH.

[0280] Figure 11 It is a diagram showing an example of the monitoring occasion of the search space set representing a solution of this embodiment. In Figure 11 In it, the search space set 91 and the search space set 92 are set in the primary cell 301, the search space set 93 is set in the secondary cell 302, and the search space set 94 is set in the secondary cell 303.

[0281] In Figure 11Among them, the blocks indicated by the grid lines represent the search area set 91, the blocks indicated by the upper right diagonal represent the search area set 92, the blocks indicated by the upper left diagonal represent the search area set 93, and the blocks indicated by the horizontal lines represent the search area set 94.

[0282] Set the monitoring interval of the search area set 91 to 1 time slot, set the monitoring offset of the search area set 91 to 0 time slots, and set the monitoring mode of the search area set 91 to [1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunities of the search area set 91 correspond to the OFDM symbol at the start point (OFDM symbol #0) and the 8th OFDM symbol (OFDM symbol #7) in each time slot.

[0283] Set the monitoring interval of the search area set 92 to 2 time slots, set the monitoring offset of the search area set 92 to 0 time slots, and set the monitoring mode of the search area set 92 to [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunities of the search area set 92 correspond to the OFDM symbol at the start point (OFDM symbol #0) in each even time slot.

[0284] Set the monitoring interval of the search area set 93 to 2 time slots, set the monitoring offset of the search area set 93 to 0 time slots, and set the monitoring mode of the search area set 93 to [0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunities of the search area set 93 correspond to the 8th OFDM symbol (OFDM symbol #7) in each even time slot.

[0285] Set the monitoring interval of the search area set 94 to 2 time slots, set the monitoring offset of the search area set 94 to 1 time slot, and set the monitoring mode of the search area set 94 to [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunities of the search area set 94 correspond to the OFDM symbol at the start point (OFDM symbol #0) in each odd time slot.

[0286] The type 0 PDCCH common search area set can be used at least for DCI formats with CRC (Cyclic Redundancy Check) sequences scrambled by SI-RNTI (System Information - Radio Network Temporary Identifier).

[0287] The type 0a PDCCH common search space set can be used at least for DCI formats appended with CRC sequences scrambled by SI-RNTI (System Information - Radio Network Temporary Identifier).

[0288] The type 1 PDCCH common search space set can be used at least for DCI formats appended with CRC sequences scrambled by RA-RNTI (Random Access - Radio Network Temporary Identifier) and / or CRC sequences scrambled by TC-RNTI (Temporary Cell - Radio Network Temporary Identifier).

[0289] The type 2 PDCCH common search space set can be used for DCI formats appended with CRC sequences scrambled by P-RNTI (Paging - Radio Network Temporary Identifier).

[0290] The type 3 PDCCH common search space set can be used for DCI formats appended with CRC sequences scrambled by C-RNTI (Cell - Radio Network Temporary Identifier).

[0291] The UE-specific PDCCH search space set can be used at least for DCI formats appended with CRC sequences scrambled by C-RNTI.

[0292] In downlink communication, the terminal device 1 detects the downlink DCI format. The detected downlink DCI format is used at least for resource allocation of the PDSCH. 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, the HARQ-ACK (HARQ-ACK corresponding to the transport block included in the PDSCH) corresponding to the PDSCH is reported to the base station device 3, where the PUCCH resource is indicated based on the detected downlink DCI format.

[0293] In uplink communication, the terminal device 1 detects the uplink DCI format. The detected DCI format is used at least for resource allocation of the PUSCH. The detected uplink DCI format is also referred to as an uplink grant. The terminal device 1 performs the transmission of the PUSCH.

[0294] The base station device 3 and the terminal device 1 may perform a channel access procedure in the serving cell c and perform the transmission of a transmission wave in the serving cell c. For example, the serving cell c may be a serving cell set in an unlicensed band. The transmission wave is a signal transmitted from the base station device 3 or the terminal device 1 to the medium.

[0295] The base station device 3 and the terminal device 1 may perform a channel access procedure in the carrier f of the serving cell c and perform the transmission of a transmission wave in the carrier f of the serving cell c. The carrier f is a carrier included in the serving cell c. The carrier f may be composed of a set of resource blocks given based on upper layer parameters.

[0296] The base station device 3 and the terminal device 1 may perform a channel access procedure in the carrier f of the serving cell c and perform the transmission of a transmission wave in a partial bandwidth b of the carrier f of the serving cell c. The partial bandwidth b is a subset of the frequency band included in the carrier f.

[0297] The base station device 3 and the terminal device 1 may perform a channel access procedure in a partial bandwidth b of the carrier f of the serving cell c and perform the transmission of a transmission wave in the carrier f of the serving cell c. Performing the transmission of a transmission wave in the carrier f of the serving cell c may be to transmit the transmission wave in any one of the partial bandwidths included in the carrier f of the serving cell c.

[0298] The base station device 3 and the terminal device 1 may perform a channel access procedure in a partial bandwidth b of the carrier f of the serving cell c and perform the transmission of a transmission wave in the partial bandwidth b of the carrier f of the serving cell c.

[0299] The channel access procedure may be configured to include one or both of first sensing and a counting process. The first channel access procedure may include first sensing. The first channel access procedure may also not include the counting process. The second channel access procedure may include at least two of first sensing and the counting process. The channel access procedure is a name including a part or all of the first channel access procedure and the second channel access procedure.

[0300] After performing the first channel access procedure, a transmission wave including at least the SS / PBCH block may be transmitted. After performing the first channel access procedure, a transmission wave including the SS / PBCH block, the PDSCH carrying broadcast information, the PDCCH including the DCI format for scheduling the PDSCH, and at least a part or all of the CSI-RS may also be transmitted. After performing the second channel access procedure, a transmission wave including at least the PDSCH carrying information other than the broadcast information may be transmitted. The PDSCH carrying broadcast information may include at least a part or all of the following: the PDSCH carrying system information, the PDSCH carrying paging information, and the PDSCH for random access (Message 2 and / or Message 4).

[0301] The transmission wave including the SS / PBCH block, the PDSCH carrying broadcast information, the PDCCH including the DCI format for scheduling the PDSCH, and at least a part or all of the CSI-RS is also referred to as DRS (Discovery Reference Signal). The DRS may be a signal transmitted after the first channel access procedure.

[0302] It may be that when the period of the DRS is less than or equal to a specified length and the duty cycle of the DRS is less than or equal to a specified value, after performing the first channel access procedure, a transmission wave including the DRS is transmitted. It may also be that when the period of the DRS exceeds the specified length, after performing the second channel access procedure, a transmission wave including the DRS is transmitted. It may be that when the duty cycle of the DRS exceeds the specified value, after performing the second channel access procedure, a transmission wave including the DRS is transmitted. For example, the specified length may be 1 ms. In addition, the specified value may be 1 / 20.

[0303] Transmitting a transmission wave after performing the channel access procedure may be transmitting the transmission wave based on the channel access procedure. Transmitting a transmission wave after performing the channel access procedure may also be transmitting the transmission wave when a channel that can be transmitted based on the channel access procedure is given.

[0304] The first measurement may be that the Medium is sensed as Idle during one or more LBT slot durations within the defer duration. Here, LBT (Listen Before Talk) may be a process of giving whether the Medium is Idle or Busy based on carrier sensing. Carrier sensing may perform energy detection in the Medium. For example, Busy may be a state where the amount of energy detected by carrier sensing is greater than a specified threshold. In addition, Idle may be a state where the amount of energy detected by carrier sensing is less than the specified threshold. In addition, the amount of energy detected by carrier sensing being equal to the specified threshold may be Idle. In addition, the amount of energy detected by carrier sensing being equal to the specified threshold may also be Busy.

[0305] Idle may be not Busy. Busy may be not Idle.

[0306] The LBT slot duration is the unit of LBT. Whether the Medium is Idle or Busy may be given for each LBT slot duration. For example, the LBT slot duration may be 9 microseconds.

[0307] The defer duration may at least include period T f and one or more LBT slot durations. The length of the defer duration is referred to as T d . For example, period T f may be 16 microseconds.

[0308] Figure 12 is a diagram showing an example of a counting process of a solution of the present embodiment. The counting process at least includes a part or all of steps A1 to A6. Step A1 (Step A1) includes an action of setting the value of counter N to N init . Here, N init is a value randomly (or pseudo-randomly) selected from integer values included in the range from 0 to CWp. CWp is the contention window size (CWS: Contention Window Size) for channel access priority p.

[0309] In step A2 (Step A2), it is determined whether the value of counter N is 0. Step A2 includes an action of completing (or ending) the channel access process when counter N is 0. Step A2 includes an action of entering step A3 when counter N is different from 0. Here, Figure 12True in it corresponds to the evaluation formula being true in the step including the action of the determination evaluation formula. In addition, False corresponds to the evaluation formula being false in the step including the action of the determination evaluation formula. In step A2, the evaluation formula corresponds to the counter N = 0.

[0310] For example, step A3 (Step A3) may include a step of decrementing the value of the counter N. Decrementing the value of the counter N may mean subtracting 1 from the value of the counter N. That is to say, decrementing the value of the counter N may mean setting the value of the counter N to N - 1.

[0311] For example, step A3 may include a step of decrementing the value of the counter N when N>0. In addition, step A3 may also include a step of decrementing the value of the counter N when it is selected that the base station device 3 or the terminal device 1 decrements the counter N. In addition, step A3 may also include a step of decrementing the value of the counter N when N>0 and it is selected that both the base station device 3 and the terminal device 1 decrement the counter N.

[0312] For example, step A4 (Step A4) may include performing carrier sensing of the medium during the LBT time slot d, and entering the action of step A2 when the LBT time slot d is idle. In addition, step A4 may also include entering the action of step A2 when it is determined by carrier sensing that the LBT time slot d is idle. In addition, step A4 may also include performing carrier sensing during the LBT time slot d, and entering step A5 when the LBT time slot d is busy. In addition, step A4 may also include entering step A5 when it is determined by carrier sensing that the LBT time slot d is busy. Here, the LBT time slot d may be the LBT time slot, and is the next LBT time slot during which carrier sensing has been performed during the counting process. In step A4, the evaluation formula may correspond to the LBT time slot d being idle.

[0313] Step A5 (Step A5) includes the action of performing carrier sensing until it is detected that the medium is busy during a certain LBT time slot included in the deferral period or until it is detected that the medium is idle during all the LBT time slots included in the deferral period.

[0314] Step A6 (Step A6) includes the action of entering step A5 when it is detected that the medium is busy during a certain LBT time slot included in the deferral period. Step A6 includes the action of entering step A2 when it is detected that the medium is idle during all the LBT time slots included in the deferral period. In step A6, the evaluation formula may correspond to the medium being idle during the certain LBT time slot.

[0315] CW min，p Represents the minimum value of the range of admissible values of the contention window size CWp for the channel access priority p. CW max，p Represents the maximum value of the range of admissible values of the contention window size CWp for the channel access priority p. The contention window size CWp for the channel access priority p is also referred to as CWp.

[0316] In the case of transmitting a transmission wave including at least a physical channel (e.g., PDSCH) associated with the channel access priority p, CWp is managed by the base station device 3 or the terminal device 1, and this CWp is adjusted (the CWp adjustment process is implemented) before step A1 of the counting process.

[0317] NR-U (New Radio - Unlicensed) can be applied to a certain component carrier. NR-U can also be applied to a certain serving cell. Applying NR-U to a certain component carrier (or a certain serving cell) can include at least a technology (framework, configuration) containing a part or all of the following elements A1 to A6.

[0318] Element A1: Constituting a second SS burst set in the certain component carrier (or the certain serving cell)

[0319] Element A2: The base station device 3 transmits a second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0320] Element A3: The terminal device 1 receives a second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0321] Element A4: The base station device 3 transmits PDCCH in a second type 0 PDCCH common search area set in the certain component carrier (or the certain serving cell)

[0322] Element A5: The terminal device 1 receives PDCCH in a second type 0 PDCCH common search area set in the certain component carrier (or the certain serving cell)

[0323] Element A6: The upper layer parameters associated with NR-U (e.g., fields included in the MIB) represent a first value (e.g., 1)

[0324] NR-U (New Radio - Unlicensed) can also not be applied to a certain component carrier. NR-U can also not be applied to a certain serving cell. Not applying NR-U to a certain component carrier (or a certain serving cell) can include at least a technology (framework, configuration) containing a part or all of the following elements B1 to B6.

[0325] Element B1: Constitutes the first SS burst set in a certain component carrier (or a certain serving cell).

[0326] Element B2: The base station device 3 transmits the first SS / PBCH block in a certain component carrier (or a certain serving cell).

[0327] Element B3: The terminal device 1 receives the first SS / PBCH block in a certain component carrier (or a certain serving cell).

[0328] Element B4: The base station device 3 transmits PDCCH in the first type 0 PDCCH common search space set in a certain component carrier (or a certain serving cell).

[0329] Element B5: The terminal device 1 receives PDCCH in the first type 0 PDCCH common search space set in a certain component carrier (or a certain serving cell).

[0330] Element B6: The upper layer parameters associated with NR-U (e.g., the fields included in the MIB) indicate a value different from the first value (e.g., 0).

[0331] A certain component carrier can be set to a licensed band. A certain serving cell can also be set to a licensed band. Here, setting a certain component carrier (or a certain serving cell) to a licensed band can include at least a part or all of the following settings 1 to 3.

[0332] Setting 1: Give an upper layer parameter indicating operation in the licensed band to a certain component carrier (or a certain serving cell), or do not give an upper layer parameter indicating operation in the unlicensed band to a certain component carrier (or a certain serving cell).

[0333] Setting 2: Set a certain component carrier (or a certain serving cell) to operate in the licensed band, or do not set a certain component carrier (or a certain serving cell) to operate in the unlicensed band.

[0334] Setting 3: A certain component carrier (or a certain serving cell) is included in the licensed band, or a certain component carrier (or a certain serving cell) is not included in the unlicensed band.

[0335] The licensed band can be a band that requires a wireless station authorization for the (expected) terminal device operating in the licensed band. The licensed band can also be a band that only allows terminal devices manufactured by an operator (enterprise, business, organization, company) with a wireless station authorization to operate. The unlicensed band can be a band that does not require a channel access procedure before the transmission of a physical signal.

[0336] An unlicensed band can be a band that does not require a wireless station authorization for a (prospective) terminal device operating in the unlicensed band. An unlicensed band can also be a band that allows operation of terminal devices manufactured by some or all of the operators with a wireless station authorization and / or operators without a wireless station authorization. An unlicensed band can also be a band that requires a channel access procedure before transmission of a physical signal.

[0337] Whether to apply NR-U in a certain component carrier (or a certain serving cell) can be determined at least based on whether the certain component carrier (or the certain serving cell) is set to a frequency band that can be operated in an unlicensed band (e.g., a frequency band that can only be operated in an unlicensed band). For example, a list of frequency bands designed for NR or carrier aggregation of NR can be specified. For example, it can be that when a certain frequency band is included in one or more of the frequency bands in the list and can be operated in an unlicensed band (e.g., a frequency band that can only be operated in an unlicensed band), NR-U is applied in the certain frequency band. In addition, it can also be that when a certain frequency band is not included in one or more of the frequency bands in the list and can be operated in an unlicensed band (e.g., a frequency band that can only be operated in an unlicensed band), NR-U is not applied in the certain frequency band, and normal NR (e.g., NR of Release 15 or NR other than NR-U of Release 16) is applied.

[0338] Whether to apply NR-U in a certain component carrier (or a certain serving cell) can be determined at least based on whether the component carrier (or the certain serving cell) is set to a frequency band that can operate NR-U (e.g., a frequency band that can only operate NR-U). For example, when a list of frequency bands designed for the operation of NR or carrier aggregation of NR is specified and one or more of the frequency bands in the list are specified as frequency bands that can operate NR-U (e.g., a frequency band that can only operate NR-U), if the frequency band set for the component carrier (or the serving cell) is any of the one or more frequency bands, NR-U can be applied, and if it is a frequency band other than the one or more frequency bands, NR-U cannot be applied, and normal NR (e.g., NR of Release 15 or NR other than NR-U of Release 16) can be applied.

[0339] Whether to apply NR-U in a certain component carrier (or a certain serving cell) can also be determined based on the information included in the system information (e.g., Master Information Block) (MIB or Physical Broadcast Channel (PBCH)). For example, it can be that the MIB includes information indicating whether to apply NR-U. When this information indicates the application of NR-U, NR-U is applied to the serving cell corresponding to this MIB. On the other hand, it can also be that when this information does not indicate the application of NR-U, NR-U is not applied to the serving cell corresponding to this MIB, and normal NR is applied. Or, this information can also indicate whether it is possible to operate in an unlicensed band.

[0340] A certain component carrier can be set as an unlicensed band. A certain serving cell can also be set as an unlicensed band. Here, setting a certain component carrier (or a certain serving cell) as an unlicensed band can include at least a part or all of the following settings 4 to 6.

[0341] Setting 4: Give an upper layer parameter indicating operation in the unlicensed band to a certain component carrier (or a certain serving cell)

[0342] Setting 5: Set a certain component carrier (or a certain serving cell) to operate in the unlicensed band

[0343] Setting 6: A certain component carrier (or a certain serving cell) is included in the unlicensed band

[0344] "Applying NR-U to a component carrier" can also be "applying NR-U to a serving cell", and "not applying NR-U to a component carrier" can also be "not applying NR-U to a serving cell".

[0345] Hereinafter, the single-trigger transmission (single-trigger report, 1-trigger transmission, 1-trigger report, one-shot transmission, single-trigger transmission) of HARQ-ACK information will be described.

[0346] For example, the single-trigger transmission of HARQ-ACK information can be to transmit HARQ-ACK information configured to include HARQ-ACK bits corresponding to multiple HARQ processes respectively through one uplink physical channel (PUCCH or PUSCH). The HARQ-ACK information configured to include HARQ-ACK bits corresponding to the multiple HARQ processes respectively is also called single-trigger HARQ-ACK information (one-shot HARQ-ACK information).

[0347] For example, the single-shot transmission of HARQ-ACK information can also be to transmit, through an uplink physical channel (PUCCH or PUSCH), HARQ-ACK information configured to include HARQ-ACK bits respectively corresponding to a plurality of PDSCH candidates. The HARQ-ACK information configured to include HARQ-ACK bits respectively corresponding to the plurality of PDSCH candidates is also referred to as one-shot HARQ-ACK information. That is to say, the one-shot HARQ-ACK information can be HARQ-ACK information configured to include HARQ-ACK bits respectively corresponding to a plurality of HARQ processes or HARQ-ACK information configured to include HARQ-ACK bits respectively corresponding to a plurality of PDSCH candidates.

[0348] A PDSCH candidate can represent a resource on which the PDSCH can be configured. The PDSCH can be transmitted in one PDSCH candidate indicated by a DCI format among the plurality of PDSCH candidates.

[0349] Figure 13 FIG. is a configuration example of one-shot HARQ-ACK information showing one aspect of the present embodiment. In Figure 13 are shown the values of HARQ-ACK bits respectively corresponding to 16 HARQ processes set for serving cell #A and serving cell #B. Here, it can be that a HARQ-ACK bit value of 1 represents ACK and a HARQ-ACK bit value of 0 represents NACK. In addition, it can also be that a HARQ-ACK bit value of 0 represents ACK and a HARQ-ACK bit value of 1 represents NACK.

[0350] Figure 13 In, the first column represents the HARQ process index, the second column represents the HARQ-ACK bits for serving cell #A (HARQ-ACK bits respectively corresponding to the HARQ processes for serving cell #A), and the third column represents the HARQ-ACK bit for serving cell #B (HARQ-ACK bits respectively corresponding to the HARQ processes for serving cell #B). For example, the HARQ-ACK bit corresponding to the HARQ process with index 0 set for serving cell #A represents 0. In addition, the HARQ-ACK bit corresponding to the HARQ process with index 8 set for serving cell #B represents 1.

[0351] The HARQ process is a thing (subject, process, entity) managed in the MAC layer. The HARQ process can receive a transport block and HARQ information associated with the transport block. The HARQ information can include at least a part or all of a new data indicator (NDI), a HARQ process index, a transport block size (TBS), and a redundancy version (RV).

[0352] The HARQ-ACK bit corresponding to the HARQ process can be the HARQ-ACK bit corresponding to the transport block received by the HARQ process.

[0353] Figure 14 It is a diagram showing a configuration example of single-trigger HARQ-ACK information representing one aspect of this embodiment. In Figure 14 are shown the HARQ-ACK bits (HARQ-ACK bits for serving cell #A) corresponding to 8 HARQ processes respectively set for serving cell #A. In Figure 14 null indicates the non-existence (or non-reporting) of the HARQ-ACK bit corresponding to the HARQ process. That is, the single-trigger HARQ-ACK information may not include the HARQ-ACK bit corresponding to the HARQ process set to null. Thus, the number of HARQ processes used in the downlink communication for a certain serving cell can be set at least based on upper layer parameters. Here, the maximum value of the number of HARQ processes used in the downlink communication for a certain serving cell can be 16. In addition, in the case where the upper layer parameter indicating the number of HARQ processes used in the downlink communication for a certain serving cell is not received, it can be assumed that the number of HARQ processes set for the certain serving cell is 8.

[0354] That is, the single-trigger HARQ-ACK information can include a plurality of HARQ-ACK bits corresponding to any one of the HARQ processes set for each serving cell.

[0355] Figure 15 It is a diagram showing a configuration example of single-trigger HARQ-ACK information representing one aspect of this embodiment. In Figure 15Shown are the HARQ-ACK bits corresponding to 8 HARQ processes respectively set for serving cell #A and the HARQ-ACK bits corresponding to 12 HARQ processes respectively set for serving cell #C. In Figure 15 the values of the HARQ-ACK bits corresponding to the HARQ processes respectively set for serving cell #B are set to be empty. In Figure 15 it is assumed that serving cell #B is deactivated. That is to say, in Figure 15 it is assumed that serving cell #A and serving cell #C are activated.

[0356] Activation of a serving cell can be controlled by a MAC CE. Deactivation of a serving cell can also be controlled by a MAC CE.

[0357] The single-trigger HARQ-ACK information may also include the value of NDI corresponding to the transport block received by the HARQ process.

[0358] Transmission of the single-trigger HARQ-ACK information can be triggered by a DCI format.

[0359] For example, DCI format 1_0 can be used in the trigger for transmission of the single-trigger HARQ-ACK information. Transmission of the single-trigger HARQ-ACK information can be triggered at least based on that all bits other than the least significant bit (LSB) of the frequency-domain resource allocation field included in DCI format 1_0 are set to 1 and the least significant bit is set to 0. Here, PDSCH may not be scheduled by this DCI format 1_0. The PUCCH resource for transmission of this single-trigger HARQ-ACK information can be given at least based on the PUCCH resource indication field included in this DCI format 1_0. For example, the base station device 3 can trigger transmission of the single-trigger HARQ-ACK information to the terminal device 1 by setting all bits other than the least significant bit of the frequency-domain resource allocation field included in DCI format 1_0 to 1 and setting the least significant bit to 0. For example, the terminal device 1 can detect this DCI format 1_0 and judge transmission of the single-trigger HARQ-ACK information at least based on that all bits other than the least significant bit of the frequency-domain resource allocation field included in this DCI format 1_0 are set to 1 and the least significant bit is set to 0.

[0360] For example, as described above, the triggering of the transmission of efficient single-trigger HARQ-ACK information can be implemented by using specific code points of the frequency-domain resource allocation field. For example, the triggering can be avoided for the code points used for PDCCH commands by setting all bits other than the least significant bit of the frequency-domain resource allocation field to 1 and setting the least significant bit to 0. Here, the PDCCH command is triggered based on setting all the frequency-domain resource allocation fields included in DCI format 1_0 to 1.

[0361] For example, the transmission of single-trigger HARQ-ACK information can be triggered when detecting DCI format 1_0 for scheduling of PDSCH and the PUCCH resource is indicated by this DCI format 1_0. For example, the transmission of single-trigger HARQ-ACK information can also not be triggered when detecting DCI format 1_0 for scheduling of PDSCH and the PUCCH resource is not indicated by this DCI format 1_0. For example, it can be that when the base station device 3 allocates a PUCCH resource to the terminal device 1 by DCI format 1_0, this DCI format triggers the transmission of single-trigger HARQ-ACK information to the terminal device 1. For example, the terminal device 1 can transmit single-trigger HARQ-ACK information based on the allocation of this PUCCH resource.

[0362] For example, the transmission of single-trigger HARQ-ACK information can be triggered when detecting DCI format 1_0 for scheduling of PDSCH and the PUCCH resource indication field is included in this DCI format 1_0. For example, the transmission of single-trigger HARQ-ACK information can also not be triggered when detecting DCI format 1_0 for scheduling of PDSCH and the PUCCH resource indication field is not included in this DCI format 1_0. For example, it can be that when the base station device 3 transmits a PDCCH including DCI format 1_0 containing a PUCCH resource indication field, this DCI format triggers the transmission of single-trigger HARQ-ACK information to the terminal device 1. The terminal device 1 can also transmit single-trigger HARQ-ACK information based on the detection of this DCI format 1_0 including the PUCCH resource indication field.

[0363] For example, the transmission of single-trigger HARQ-ACK information can be triggered when detecting DCI format 1_0 for scheduling of PDSCH, where this DCI format 1_0 indicates PUCCH resources and the CRC sequence appended to this DCI format is scrambled by C-RNTI. For example, the transmission of single-trigger HARQ-ACK information can also not be triggered when detecting DCI format 1_0 for scheduling of PDSCH, where this DCI format 1_0 indicates PUCCH resources and the CRC sequence appended to this DCI format is scrambled by TC-RNTI. The PUCCH resources for the transmission of this single-trigger HARQ-ACK information can be given based at least on the PUCCH resource indication field included in this DCI format 1_0.

[0364] For example, it can be that when detecting DCI format 1_0 in a certain serving cell, in the case of applying NR-U to this certain serving cell, the information bit (field) indicating whether to trigger the transmission of single-trigger HARQ-ACK information is included in this DCI format 1_0. For example, it can also be that when detecting DCI format 1_0 in a certain serving cell, in the case of not applying NR-U to this certain serving cell, the information bit indicating whether to trigger the transmission of single-trigger HARQ-ACK information is not included in this DCI format 1_0. For example, the base station device 3 can transmit a PDCCH including DCI format 1_0 in a certain serving cell, and in the case of applying NR-U to the terminal device 1 connected to this certain serving cell, the information bit indicating whether to trigger the transmission of single-trigger HARQ-ACK information is included in this DCI format 1_0. For example, the terminal device 1 can determine whether to transmit single-trigger HARQ-ACK information based on this information bit included in this DCI format 1_0.

[0365] For example, appropriate signaling can be provided to the terminal device 1 applying NR-U as described above.

[0366] For example, single-trigger HARQ-ACK information triggered by DCI format 1_0 detected in a certain serving cell among a plurality of serving cells configured for the terminal device 1 may include HARQ-ACK bits corresponding to the HARQ process configured for the certain serving cell. In addition, the single-trigger HARQ-ACK information may not include HARQ-ACK bits corresponding to the HARQ process configured for serving cells other than the certain serving cell. For example, the base station device 3 may transmit a PDCCH including DCI format 1_0 in a certain serving cell among a plurality of serving cells configured for the terminal device 1. In addition, transmission of single-trigger HARQ-ACK information including HARQ-ACK bits corresponding to the certain serving cell may be triggered at least based on the DCI format 1_0. For example, the terminal device 1 may also include HARQ-ACK bits corresponding to the certain serving cell in the single-trigger HARQ-ACK information.

[0367] For example, as described above, the number of bits of single-trigger HARQ-ACK information can be appropriately controlled for the terminal device 1 configured with carrier aggregation.

[0368] For example, single-trigger HARQ-ACK information triggered by DCI format 1_0 detected in a certain serving cell among a plurality of serving cells configured for the terminal device 1 may include HARQ-ACK bits corresponding to the HARQ process configured for the representative serving cell. Here, the certain serving cell may also be different from the representative serving cell. In addition, the single-trigger HARQ-ACK information may not include HARQ-ACK bits corresponding to the HARQ process configured for serving cells other than the representative serving cell. In addition, the single-trigger HARQ-ACK information may not include HARQ-ACK bits corresponding to the certain serving cell. For example, the base station device 3 may transmit a PDCCH including DCI format 1_0 in a certain serving cell among a plurality of serving cells configured for the terminal device 1. In addition, transmission of single-trigger HARQ-ACK information including HARQ-ACK bits corresponding to the representative serving cell may be triggered at least based on the DCI format 1_0. Here, the certain serving cell may also be different from the representative serving cell. For example, the terminal device 1 may also include HARQ-ACK bits corresponding to the representative serving cell in the single-trigger HARQ-ACK information.

[0369] For example, as described above, the number of bits of single-trigger HARQ-ACK information can be appropriately controlled for the terminal device 1 configured with carrier aggregation.

[0370] The representative serving cell is the serving cell. For example, the representative serving cell may be the primary cell. For example, the representative serving cell may also be the primary SCG cell. For example, the representative serving cell may also be the PUCCH cell. For example, the representative serving cell may also be indicated by a higher layer parameter.

[0371] For example, DCI format 1_1 can be used in a trigger for transmitting single-trigger HARQ-ACK information. The transmission of the single-trigger HARQ-ACK information can be triggered at least based on all the bits in the frequency domain resource allocation field included in DCI format 1_1 being set to 1. Here, the PDSCH may not be scheduled by this DCI format 1_1. The PUCCH resource for the transmission of the single-trigger HARQ-ACK information can be given at least based on the PUCCH resource indication field included in this DCI format 1_1. For example, the base station device 3 can trigger the transmission of the single-trigger HARQ-ACK information to the terminal device 1 by setting all the bits in the frequency domain resource allocation field included in DCI format 1_1 to 1. For example, the terminal device 1 can detect this DCI format 1_1 and determine the transmission of the single-trigger HARQ-ACK information at least based on all the bits in the frequency domain resource allocation field included in this DCI format 1_1 being set to 1.

[0372] For example, as described above, the trigger for the efficient transmission of single-trigger HARQ-ACK information can be implemented by using specific code points in the frequency domain resource allocation field.

[0373] For example, it may be that DCI format 1_1 is detected in a certain serving cell, and in the case where NR-U is applied to this certain serving cell, the information bit indicating whether to trigger the transmission of the single-trigger HARQ-ACK information is included in this DCI format 1_1. For example, it may also be that DCI format 1_1 is detected in a certain serving cell, and in the case where NR-U is not applied to this certain serving cell, the information bit indicating whether to trigger the transmission of the single-trigger HARQ-ACK information is not included in this DCI format 1_1. For example, the base station device 3 can transmit a PDCCH including DCI format 1_1 containing the information bit indicating whether to trigger the transmission of the single-trigger HARQ-ACK information. For example, the terminal device 1 can determine whether to transmit the single-trigger HARQ-ACK information based on this information bit included in DCI format 1_1.

[0374] For example, whether the information bit indicating whether to trigger the transmission of the single-trigger HARQ-ACK information is included in DCI format 1_1 can be given at least based on a higher layer parameter.

[0375] For example, single-trigger HARQ-ACK information triggered by DCI format 1_1 detected in a certain serving cell may include one or more HARQ-ACK bits corresponding to any one of the HARQ processes set for a set including one or more serving cells. This set may be indicated by a higher layer parameter. This set may be selected from one or more sets according to a field included in DCI format 1_1.

[0376] For example, whether information bits indicating whether to trigger the transmission of single-trigger HARQ-ACK information are included in DCI format 1_1 may be given based at least on a higher layer parameter. For example, this higher layer parameter may be system information.

[0377] For example, DCI format 0_0 may be used in the trigger for the transmission of single-trigger HARQ-ACK information. The transmission of single-trigger HARQ-ACK information may be triggered based at least on all the bits of the frequency domain resource allocation field included in DCI format 0_0 being set to 1. Here, PUSCH may not be scheduled by this DCI format 0_0 either. When a PUCCH resource is used in the transmission of this single-trigger HARQ-ACK information, this PUCCH resource may be given based at least on the information bits included in this DCI format 0_0. For example, the base station device 3 may trigger the transmission of single-trigger HARQ-ACK information to the terminal device 1 by setting all the bits of the frequency domain resource allocation field included in DCI format 0_0 to 1. For example, the terminal device 1 may detect this DCI format 0_0 and determine the transmission of single-trigger HARQ-ACK information based at least on all of the bits of the frequency domain resource allocation field included in this DCI format 0_0 being set to 1.

[0378] For example, as described above, the trigger for the transmission of efficient single-trigger HARQ-ACK information can be implemented by using specific code points of the frequency domain resource allocation field.

[0379] Figure 16 is a diagram showing a configuration example of a field of DCI format 0_0 representing one aspect of this embodiment. In Figure 16In one example shown, the field of the starting point included in DCI format 0_0 is a DCI format specific field (ID for DCI formats: ID for DCI formats), and then, it is arranged in the order of the frequency domain resource allocation field (FDRA: Frequency Domain Resource Assignment), the time domain resource allocation field (TDRA: Time Domain Resource Assignment), the hopping flag field, the MCS field (MCS), the NDI field (NDI), the RV field (RV), the HPN field (HPN), the TPC field (TPC), the padding field, and the UL / SUL indicator field (UL / SUL indicator: UL / SUL indicator). Here, the NDI field is a field representing the value of NDI. In addition, the RV (Redundancy Version) field is a field representing the value of RV. In addition, the HPN (HARQ Process Number: HARQ process number) field is a field representing the HARQ process index. In addition, the TPC (Transmission Power Control: transmission power control) field is a field representing the control value of the transmission power for the PUSCH. The padding field is a field used at least to make the number of bits (size) of DCI format 1_0 consistent with that of DCI format 0_0. The UL / SUL (UpLink / Supplementary UpLink: uplink / supplementary uplink) indicator field is the following field: when detecting DCI format 0_0 including this UL / SUL field in a certain serving cell and scheduling the PUSCH through this DCI format 0_0, it indicates which one of the first uplink component carrier and the second component carrier the PUSCH is configured for. Here, the first uplink component carrier and the second uplink component carrier are included in the serving cell.

[0380] In addition, in Figure 16 the number of bits of the DCI format specific field is 1. In addition, the number of bits X of the frequency domain resource allocation field is given based at least on the number of resource blocks of the BWP configured with the PUSCH. In addition, the number of bits of the time domain resource allocation field is 4. In addition, the number of bits of the hopping flag field is 1. In addition, the number of bits of the MCS field is 5. In addition, the number of bits of the NDI field is 1. In addition, the number of bits of the RV field is 2. In addition, the number of bits of the HPN field is 4. In addition, the number of bits of the TPC field is 3. In addition, the number of bits Y of the padding field is given to make the number of bits of DCI format 0_0 consistent with that of DCI format 1_0. In addition, the number of bits Z of the UL / SUL indicator field is 1 or 0.

[0381] When SUL is configured for a serving cell (the upper layer parameters indicating the configuration related to SUL in the serving cell are included in ServingCellConfig) and the number of bits of DCI format 1_0 is greater than the number of bits of DCI format 0_0, the number of bits Z of the UL / SUL indication field can be 1. When SUL is not configured for the serving cell (the upper layer parameters indicating the configuration related to SUL in the serving cell are not included in ServingCellConfig), the number of bits Z of the UL / SUL indication field can be 0. When the number of bits of DCI format 1_0 is less than the number of bits of DCI format 0_0, the number of bits Z of the UL / SUL indication field can be 0. When the number of bits of DCI format 1_0 is equal to the number of bits of DCI format 0_0, the number of bits Z of the UL / SUL indication field can be 0. SUL communicates using a first uplink component carrier and a second uplink component carrier included in a certain serving cell.

[0382] The information bit indicating whether to trigger the transmission of single-shot HARQ-ACK information can be appended after (or immediately after) the padding field included in DCI format 0_0. The information bit indicating whether to trigger the transmission of single-shot HARQ-ACK information can also be appended immediately before the UL / SUL indication field included in DCI format 0_0. The information bit indicating whether to trigger the transmission of single-shot HARQ-ACK information can also be appended between the padding field and the UL / SUL indication field included in DCI format 0_0. The information bit indicating whether to trigger the transmission of single-shot HARQ-ACK information can be given by using a part of the bits included in the padding field included in DCI format 0_0. For example, the base station device 3 can append this information bit at a specified position (after the padding field, immediately before the UL / SUL indication field, a part of the bits included in the padding field) to transmit the PDCCH including DCI format 0_0. For example, the terminal device 1 can determine whether to transmit single-shot HARQ-ACK information based on this information bit included in DCI format 0_0.

[0383] For example, as described above, it is easy to make the number of bits of DCI format 0_0 and DCI format 1_0 consistent.

[0384] For example, it may be that DCI format 0_0 is detected in a certain serving cell. When NR-U is applied to the certain serving cell, a field indicating whether to trigger the transmission of single-trigger HARQ-ACK information is included in the DCI format 0_0. For example, it may also be that DCI format 0_0 is detected in a certain serving cell. When NR-U is not applied to the certain serving cell, a field indicating whether to trigger the transmission of single-trigger HARQ-ACK information is not included in the DCI format 0_0. For example, the base station device 3 may transmit a PDCCH including DCI format 0_0 in a certain serving cell. When NR-U is applied to the terminal device 1 connected to the certain serving cell, information bits indicating whether to trigger the transmission of single-trigger HARQ-ACK information are included in the DCI format 0_0. For example, the terminal device 1 may determine whether to transmit single-trigger HARQ-ACK information based on the information bits included in the DCI format 0_0.

[0385] For example, appropriate signaling can be provided to the terminal device 1 to which NR-U is applied as described above.

[0386] For example, the single-trigger HARQ-ACK information triggered by DCI format 0_0 detected in a certain serving cell among a plurality of serving cells set for the terminal device 1 may include HARQ-ACK bits corresponding to the HARQ process set for the certain serving cell. In addition, the single-trigger HARQ-ACK information may not include HARQ-ACK bits corresponding to the HARQ process set for serving cells other than the certain serving cell. For example, the base station device 3 may transmit a PDCCH including DCI format 0_0 in a certain serving cell among a plurality of serving cells set for the terminal device 1. In addition, the transmission of single-trigger HARQ-ACK information including HARQ-ACK bits corresponding to the certain serving cell may be triggered at least based on the DCI format 0_0. For example, the terminal device 1 may also include HARQ-ACK bits corresponding to the certain serving cell in the single-trigger HARQ-ACK information.

[0387] For example, the number of bits of the single-trigger HARQ-ACK information can be appropriately controlled for the terminal device 1 with carrier aggregation set as described above.

[0388] For example, the single-trigger HARQ-ACK information triggered by DCI format 0_0 detected in a certain serving cell among the multiple serving cells configured for the terminal device 1 may include the HARQ-ACK bits corresponding to the HARQ process for the representative serving cell. Here, this certain serving cell may also be different from the representative serving cell. In addition, the single-trigger HARQ-ACK information may not include the HARQ-ACK bits corresponding to the HARQ process for serving cells other than the representative serving cell. In addition, the single-trigger HARQ-ACK information may not include the HARQ-ACK bits corresponding to the HARQ process for this certain serving cell. For example, the base station device 3 may transmit a PDCCH including DCI format 0_0 in a certain serving cell among the multiple serving cells configured for the terminal device 1. In addition, the transmission of the single-trigger HARQ-ACK information including the HARQ-ACK bits corresponding to the representative serving cell may be triggered at least based on this DCI format 0_0. Here, this certain serving cell may also be different from the representative serving cell. For example, the terminal device 1 may also include the HARQ-ACK bits corresponding to the representative serving cell in the single-trigger HARQ-ACK information.

[0389] For example, as described above, the number of bits of the single-trigger HARQ-ACK information can be appropriately controlled for the terminal device 1 configured with carrier aggregation.

[0390] For example, DCI format 0_1 can be used in the trigger for the transmission of the single-trigger HARQ-ACK information. The transmission of the single-trigger HARQ-ACK information can be triggered at least based on all the bits of the frequency-domain resource allocation field included in DCI format 0_1 being set to 1. Here, the PUSCH may not be scheduled by this DCI format 0_1. The PUCCH resource for the transmission of the single-trigger HARQ-ACK information can be given at least based on the fields included in this DCI format 0_1.

[0391] For example, it may be that DCI format 0_1 is detected in a certain serving cell, and in the case where NR-U is applied to this certain serving cell, a field indicating whether to trigger the transmission of the single-trigger HARQ-ACK information is included in this DCI format 0_1. For example, it may also be that DCI format 0_1 is detected in a certain serving cell, and in the case where NR-U is not applied to this certain serving cell, a field indicating whether to trigger the transmission of the single-trigger HARQ-ACK information is not included in this DCI format 0_1.

[0392] For example, whether a field indicating whether to trigger the transmission of the single-trigger HARQ-ACK information is included in DCI format 0_1 can be given at least based on upper-layer parameters.

[0393] For example, the single-trigger HARQ-ACK information triggered by DCI format 0_1 detected in a certain serving cell may include one or more HARQ-ACK bits corresponding to any one of the HARQ processes set for a set including one or more serving cells. This set may be represented by a higher-layer parameter. This set may be selected from one or more sets through a field included in DCI format 0_1.

[0394] For example, whether an information bit indicating whether to trigger the transmission of the single-trigger HARQ-ACK information is included in DCI format 0_1 may be given at least based on a higher-layer parameter. For example, this higher-layer parameter may be system information.

[0395] Hereinafter, the solutions of various apparatuses in one solution of the present embodiment will be described.

[0396] (1) To achieve the above object, the solution of the present invention adopts the following solution. That is, the first solution of the present invention is a terminal device, comprising: a receiving unit that receives DCI format 1_0; and a transmitting unit that transmits at least a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a plurality of HARQ processes based on all bits other than the least significant bit of the frequency-domain allocation field included in the DCI format 1_0 being set to 1 and the least significant bit being set to 0.

[0397] (2) In addition, the second solution of the present invention is a terminal device, comprising: a receiving unit that receives a PDCCH; and a transmitting unit that, when DCI format 1_0 is detected in the PDCCH, transmits a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a first set of a plurality of HARQ processes, and when DCI format 1_1 is detected in the PDCCH, transmits a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a second set of a plurality of HARQ processes, the first set including 16 HARQ processes, and the second set including a number of HARQ processes set by a higher-layer parameter.

[0398] (3) Further, a third aspect of the present invention is a terminal device that communicates with a base station device in a plurality of serving cells including a primary cell, comprising: a receiving unit that receives a PDCCH in one of the plurality of serving cells; and a transmitting unit that, when detecting DCI format 1_0 in the PDCCH, transmits a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a first set of a plurality of HARQ processes, and when detecting DCI format 1_1 in the PDCCH, transmits a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a second set of a plurality of HARQ processes, the first set including HARQ processes assigned to the one primary cell or HARQ processes assigned to the one serving cell, and the second set including HARQ processes assigned to any one of a set of serving cells set by RRC parameters.

[0399] (4) Further, in the third aspect of the present invention, the set of serving cells includes activated serving cells among the plurality of serving cells, the set of serving cells does not include non-activated serving cells among the plurality of serving cells, and the serving cells are activated by MAC CE.

[0400] (5) Further, a fourth aspect of the present invention is a terminal device, comprising: a receiving unit that receives DCI format 0_0; and a transmitting unit that transmits at least a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a plurality of HARQ processes at least based on all bits of the frequency domain allocation field included in the DCI format 0_0 being set to 1.

[0401] (6) Further, a fifth aspect of the present invention is a terminal device, comprising: a receiving unit that receives DCI format 0_0; and a transmitting unit that transmits at least a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a plurality of HARQ processes at least based on a trigger field included in the DCI format 0_0 being set to a specified value, the trigger field being configured immediately before the UL / SUL indication field.

[0402] (7) Further, a sixth aspect of the present invention is a base station device, comprising: a transmitting unit that triggers the transmission of a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a plurality of HARQ processes at least based on setting all bits other than the least significant bit of the frequency domain allocation field included in DCI format 1_0 to 1 and setting the least significant bit to 0; and a receiving unit that receives the plurality of HARQ-ACK bits.

[0403] (8) Further, a seventh aspect of the present invention is a base station apparatus, comprising: a transmission unit that triggers the transmission of a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a first set of a plurality of HARQ processes based on transmitting DCI format 1_0 in a PDCCH, and triggers the transmission of a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a second set of a plurality of HARQ processes based on transmitting DCI format 1_1 in the PDCCH; and a reception unit that receives the plurality of HARQ-ACK bits, wherein the first set includes 16 HARQ processes, and the second set includes a number of HARQ processes set by an upper layer parameter.

[0404] (9) Further, an eighth aspect of the present invention is a base station apparatus that communicates with a terminal apparatus in a plurality of serving cells including a primary cell, comprising a transmission unit that transmits a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a first set of a plurality of HARQ processes based on transmitting a PDCCH in one of the plurality of serving cells and transmitting DCI format 1_0 in the PDCCH, and transmits a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a second set of a plurality of HARQ processes based on transmitting DCI format 1_1 in the PDCCH, wherein the first set includes HARQ processes set for the primary cell or includes HARQ processes set for the one serving cell, and the second set includes HARQ processes set for any one of a set of serving cells set by RRC parameters.

[0405] (10) Further, in the eighth aspect of the present invention, the set of serving cells includes active serving cells among the plurality of serving cells, the set of serving cells does not include inactive serving cells among the plurality of serving cells, and the serving cells are activated by a MAC CE.

[0406] (11) Further, a ninth aspect of the present invention is a base station apparatus, comprising: a transmission unit that triggers the transmission of a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a plurality of HARQ processes at least based on setting all bits of a frequency domain allocation field included in DCI format 0_0 to 1; and a reception unit that receives the plurality of HARQ-ACK bits.

[0407] (12) Further, a tenth aspect of the present invention is a base station device, comprising: a transmission unit that transmits a plurality of HARQ-ACK bits corresponding to any one of a plurality of transport blocks managed by any one of a plurality of HARQ processes, at least based on setting a trigger field included in DCI format 0_0 to a specified value; and a reception unit that receives the plurality of HARQ-ACK bits, wherein the trigger field is arranged immediately before the UL / SUL indication field.

[0408] The program operating in the base station device 3 and the terminal device 1 according to one aspect of the present invention may be a program that controls a CPU (Central Processing Unit) or the like to implement the functions of the above-described embodiments according to one aspect of the present invention (a program that causes a computer to function). Then, the information processed by these devices is temporarily stored in a RAM (Random Access Memory) during the processing, and then stored in various ROMs such as a Flash ROM (Read Only Memory), an HDD (Hard Disk Drive), etc. The information is read out, corrected, and written by the CPU as needed.

[0409] It should be noted that a part of the terminal device 1 and the base station device 3 of the above-described embodiments can also be implemented by a computer. In this case, it can be implemented by recording a program for implementing the control function on a computer-readable recording medium, reading the program recorded on the recording medium into a computer system, and executing it.

[0410] It should be noted that the "computer system" mentioned here refers to a computer system built in the terminal device 1 or the base station device 3, and is a computer system including hardware such as an OS and peripheral devices. In addition, the "computer-readable recording medium" refers to a removable medium such as a floppy disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in the computer system.

[0411] Moreover, the "computer-readable recording medium" may also include: a recording medium that stores a program for a short time and dynamically, such as a communication line in the case of transmitting a program via a network such as the Internet or a communication line such as a telephone line; and a recording medium that stores a program for a fixed time, such as a volatile memory inside a computer system of a server or a client in this case. In addition, the above program may be a program for implementing a part of the above functions, or a program that can implement the above functions by combining with a program already recorded in the computer system.

[0412] In addition, the base station device 3 in the above-described embodiment can also be implemented as an aggregate (device group) composed of multiple devices. Each device constituting the device group may have some or all of the functions or function blocks of the base station device 3 in the above-described embodiment. As the device group, it suffices to have all the functions or function blocks of the base station device 3. In addition, the terminal device 1 in the above-described embodiment can also communicate with the base station device as an aggregate.

[0413] In addition, 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). In addition, the base station device 3 in the above-described embodiment may also have some or all of the functions of an upper node with respect to an eNodeB and / or a gNB.

[0414] In addition, some or all of the terminal device 1 and the base station device 3 in the above-described embodiment can be typically implemented as an LSI which is an integrated circuit, or can be implemented as a chipset. Each function block of the terminal device 1 and the base station device 3 can be made into an independent chip, or some or all of them can be integrated and made into a chip. In addition, the method of integrating into an integrated circuit is not limited to an LSI, and can also be implemented using a dedicated circuit or a general-purpose processor. In addition, in the case where an integrated circuit technology substituting for an LSI appears with the progress of semiconductor technology, an integrated circuit based on this technology can also be used.

[0415] In addition, in the above-described embodiment, a terminal device which is an example of a communication device is described, but the invention of the present application is not limited thereto, and can be applied to fixed or non-mobile electronic devices installed indoors and outdoors, such as terminal devices or communication devices such as AV devices, kitchen devices, cleaning / washing devices, air conditioning devices, office devices, vending machines, and other living devices.

[0416] As described above, the embodiments of the present invention have been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and also includes design changes and the like within the scope not departing from the gist of the present invention. In addition, one aspect of the present invention can be variously changed within the scope shown in the technical solution, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. In addition, it also includes a configuration obtained by replacing elements having the same effect among the elements described in the above-described respective embodiments with each other.

[0417] Industrial Applicability

[0418] One aspect of the present invention can be used, for example, in a communication system, a communication device (such as a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (such as a communication chip), or a program, etc.

[0419] Description of Reference Numerals

[0420] 1 (1A, 1B, 1C) Terminal device

[0421] 3 Base station device

[0422] 10, 30 Radio transceiver unit

[0423] 11, 31 Antenna unit

[0424] 12, 32 RF unit

[0425] 13, 33 Baseband unit

[0426] 14, 34 Upper layer processing unit

[0427] 15, 35 Medium Access Control layer processing unit

[0428] 16, 36 Radio Resource Control layer processing unit

[0429] 91, 92, 93, 94 Search area set

[0430] 300 Component carrier

[0431] 301 Primary cell

[0432] 302, 303 Secondary cell

[0433] 3000 Point

[0434] 3001, 3002 Resource grid

[0435] 3003, 3004 BWP

[0436] 3011, 3012, 3013, 3014 Offset

[0437] 3100, 3200 Common resource block set

Claims

1. A terminal device, the terminal device comprising: a receiving unit that receives a physical downlink control channel carrying downlink control information in DCI format, the DCI format being used for scheduling a physical downlink shared channel PDSCH for a serving cell; and a transmitting unit that transmits a single-trigger HARQ-ACK message including HARQ response information HARQ-ACK message bits for each of the HARQ processes of the hybrid automatic repeat request HARQ for the serving cell, at least based on all bits in the frequency-domain resource allocation field being set to 1, wherein the frequency-domain resource allocation field in the DCI format is used to indicate the frequency-domain resources for the PDSCH, and when all bits in the frequency-domain resource allocation field are set to 1, the PDSCH is not scheduled by the DCI format.

2. A base station device, the base station device comprising: a transmitting unit that transmits a physical downlink control channel carrying downlink control information in DCI format, the DCI format being used for scheduling a physical downlink shared channel PDSCH for a serving cell; and a receiving unit that receives a single-trigger HARQ-ACK message including HARQ response information HARQ-ACK message bits for each of the HARQ processes of the hybrid automatic repeat request HARQ for the serving cell, at least based on all bits in the frequency-domain resource allocation field being set to 1, wherein the frequency-domain resource allocation field in the DCI format is used to indicate the frequency-domain resources for the PDSCH, and when all bits in the frequency-domain resource allocation field are set to 1, the PDSCH is not scheduled by the DCI format.

3. A communication method for a terminal device, the communication method comprising: a receiving process that receives a physical downlink control channel carrying downlink control information in DCI format, the DCI format being used for scheduling a physical downlink shared channel PDSCH for a serving cell; and a transmitting process that transmits a single-trigger HARQ-ACK message including HARQ response information HARQ-ACK message bits for each of the HARQ processes of the hybrid automatic repeat request HARQ for the serving cell, at least based on all bits in the frequency-domain resource allocation field being set to 1, wherein the frequency-domain resource allocation field in the DCI format is used to indicate the frequency-domain resources for the PDSCH, and when all bits in the frequency-domain resource allocation field are set to 1, the PDSCH is not scheduled by the DCI format.

4. A communication method for a base station device, the communication method comprising: a transmitting process that transmits a physical downlink control channel carrying downlink control information in DCI format, the DCI format being used for scheduling a physical downlink shared channel PDSCH for a serving cell; and Receiving process, wherein the receiving process receives single-trigger HARQ-ACK information including HARQ response information HARQ-ACK information bits of a HARQ process for each of the serving cells, at least based on all bits in a frequency-domain resource allocation field being set to 1. The frequency-domain resource allocation field in the DCI format is used to indicate the frequency-domain resources for the PDSCH. In the case where all bits in the frequency-domain resource allocation field are set to 1, the PDSCH is not scheduled by the DCI format.

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