Terminal device, base station device, and communication method

Abstract

The terminal device of the present invention comprises: a receiving unit, in which a first PDSCH group identifier is indicated by a first DCI format, and a second PDSCH group identifier is indicated by a second DCI format; and a sending unit, which, when the first DCI format is detected, sends HARQ‑ACK information of a second PDSCH group identifier determined at least based on a parameter M, wherein a value of a first NFI of the second PDSCH group identifier is indicated by a first NFI field within the second DCI format, and a value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field within the first DCI format, and when the value of the second NFI is not empty and is different from the value of the first NFI, the value of the parameter M is set to zero.

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. 2019-234938 filed in Japan on December 25, 2019, and uses the contents thereof herein. Background Art

[0003] In the Third Generation Partnership Project (3GPP: rd In the 1990s and 1999s, the United Nations Development Programme (UNDP) and the United Nations Development Programme (UNDP) conducted research on wireless access methods and wireless 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 eNodeB (evolved NodeB), and the terminal device is also called UE (User Equipment). LTE is a cellular communication system that configures the area covered by multiple base station devices in a cell shape. A single base station device can manage multiple service cells.

[0004] In 3GPP, the next generation standard (NR: New Radio) was studied in order to make recommendations to IMT (International Mobile Telecommunication)-2020, which is the next generation mobile communication system standard established by the International Telecommunication Union (ITU) (Non-Patent Document 1). NR is required to meet the requirements of 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 literature

[0006] Non-patent literature

[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] Problem that the invention aims to solve

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

[0010] Technical Solution

[0011] (1) A first aspect of the present invention is a terminal device, comprising: a receiving unit, in which a first PDSCH (Physical Downlink Shared Channel) group identifier is indicated by a first DCI (Downlink Control Information) format, and a second PDSCH group identifier different from the first PDSCH group identifier is indicated by a second DCI format; and a transmitting unit, in a case where the first DCI format is detected, transmits HARQ-ACK information of the second PDSCH group identifier, that is, HARQ-ACK information determined based on at least a parameter M, wherein a value of a first NFI (New Feedback Indicator) of the second PDSCH group identifier is indicated by a first NFI field in the second DCI format, and a value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field different from the first NFI field in the first DCI format, wherein when the value of the second NFI is not null and the value of the second NFI is different from the value of the first NFI, the value of the parameter M is set to zero, and when the value of the second NFI is null or the value of the second NFI is the same as the value of the first NFI, the value of the parameter M is a PDCCH (Physical Downlink Control Channel: the number of monitoring opportunities included in the set of monitoring opportunities of the physical downlink control channel).

[0012] (2) A second aspect of the present invention is a base station apparatus comprising: a transmitting unit that indicates a first PDSCH (Physical Downlink Shared Channel) group identifier by a first DCI (Downlink Control Information) format, and indicates a second PDSCH group identifier different from the first PDSCH group identifier by a second DCI format; and a receiving unit that, when the first DCI format is transmitted, receives HARQ-ACK information of the second PDSCH group identifier, that is, HARQ-ACK information determined based on at least a parameter M, wherein a value of a first NFI (New Feedback Indicator) of the second PDSCH group identifier is indicated by a first NFI field in the second DCI format, and a value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field different from the first NFI field in the first DCI format, wherein when the value of the second NFI is not null and the value of the second NFI is different from the value of the first NFI, the value of the parameter M is set to zero, and when the value of the second NFI is null or the value of the second NFI is the same as the value of the first NFI, the value of the parameter M is a PDCCH (Physical Downlink Control The number of monitoring opportunities included in the set of monitoring opportunities for the channel.

[0013] (3) A third scheme of the present invention is a communication method of a terminal device, comprising the following steps: a step of indicating a first PDSCH (Physical Downlink Shared Channel) group identifier through a first DCI (Downlink Control Information) format; a step of indicating a second PDSCH group identifier different from the first PDSCH group identifier through a second DCI format; and a step of transmitting HARQ-ACK information of the second PDSCH group identifier, i.e., HARQ-ACK information determined at least based on a parameter M, when the first DCI format is detected, wherein a value of a first NFI (New Feedback Indicator) of the second PDSCH group identifier is indicated by a first NFI field in the second DCI format, a value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field different from the first NFI field in the first DCI format, when the value of the second NFI is not empty and the value of the second NFI is different from the value of the first NFI, setting the value of the parameter M to zero, and when the value of the second NFI is empty or the value of the second NFI is the same as the value of the first NFI, the value of the parameter M is a PDCCH (Physical Downlink Shared Channel) group identifier. The number of monitoring opportunities included in the set of monitoring opportunities of the ControlChannel).

[0014] (4) A fourth aspect of the present invention is a communication method of a base station device, comprising the following steps: a step of indicating a first PDSCH (Physical Downlink Shared Channel) group identifier by a first DCI (Downlink Control Information) format; a step of indicating a second PDSCH group identifier different from the first PDSCH group identifier by a second DCI format; and a step of receiving HARQ-ACK information of the second PDSCH group identifier, i.e., HARQ-ACK information determined at least based on a parameter M, when the first DCI format is transmitted, wherein a value of a first NFI (New Feedback Indicator) of the second PDSCH group identifier is indicated by a first NFI field in the second DCI format, a value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field different from the first NFI field in the first DCI format, and when the value of the second NFI is not null and the value of the second NFI is different from the value of the first NFI, setting the value of the parameter M to zero, and when the value of the second NFI is null or the value of the second NFI is the same as the value of the first NFI, the value of the parameter M is a PDCCH (Physical Downlink Shared Channel) group identifier. The number of monitoring opportunities included in the set of monitoring opportunities of the ControlChannel).

[0015] Beneficial Effects

[0016] According to one aspect of the present invention, a terminal device can efficiently communicate. In addition, a base station device can efficiently communicate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment.

[0018] Figure 2 N represents one embodiment of the present embodiment. slot symb An example of the relationship between the subcarrier spacing setting μ, the time slot setting and the CP setting.

[0019] Figure 3 This is a schematic diagram showing an example of a resource grid in a subframe according to one scenario of the present embodiment.

[0020] Figure 4 This is a diagram showing an example of monitoring opportunities of a search area set according to one scenario of the present embodiment.

[0021] Figure 5 It is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of the present embodiment.

[0022] Figure 6 It is a schematic block diagram showing the configuration of the base station device 3 according to one aspect of the present embodiment.

[0023] Figure 7 This is a diagram showing an example of correspondence between a monitoring occasion for a search space set and a monitoring occasion for PDCCH according to one scheme of the present embodiment.

[0024] Figure 8 This is a diagram showing an example of the configuration of a set of monitoring opportunities for the PDCCH in time slot n according to one aspect of the present embodiment.

[0025] Fig. 9 This is a diagram showing an example of the configuration of a set of monitoring opportunities for the PDCCH in time slot n according to one aspect of the present embodiment.

[0026] Fig.10 This is a diagram showing an example of the configuration of a set of monitoring opportunities for the PDCCH in time slot n according to one aspect of the present embodiment.

[0027] Fig.11 This is a diagram showing an example related to the indication of count DAI and total DAI according to one aspect of the present embodiment.

[0028] Fig.12 This is a diagram showing an example of a process of constructing a HARQ-ACK codebook according to one scheme of the present embodiment.

[0029] Fig.13 This is a diagram showing an example of a process of constructing a HARQ-ACK codebook according to one scheme of the present embodiment.

[0030] Fig.14 This is a diagram showing an example of a process of constructing a HARQ-ACK codebook according to one scheme of the present embodiment.

[0031] Fig.15 This is a diagram showing an example of generation of HARQ-ACK information according to a scheme of the present embodiment.

[0032] Fig.16 This is a diagram showing an example of generation of HARQ-ACK information according to a scheme of the present embodiment. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present invention will be described.

[0034] "A and / or B" may be a term including "A", "B", or "A and B".

[0035] ceil(A) is the ceiling function of A. ceil(A) may be a function that outputs the smallest integer in a range not less than A. log2(B) is the logarithm function of B with base 2. pow(A, B) is a power function defined for a constant A. That is, pow(A, B) is A raised to the power of B. 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. (E)mod(F) may be a function that outputs the remainder obtained by dividing E by F. (E)mod(F) may also be a function that outputs a value corresponding to the remainder obtained by dividing E by F.

[0036] The parameter or information indicating one or more values ​​may be the parameter or the information at least including the parameter or information indicating the one or more values. The upper layer parameter may be a single upper layer parameter. The upper layer parameter may also be an information element (IE: Information Element) including multiple parameters.

[0037] Figure 1 FIG. 1 is a conceptual diagram of a wireless communication system according to one embodiment of the present invention. Figure 1 In the wireless communication system, there are terminal devices 1A to 1C and a base station device 3. Hereinafter, the terminal devices 1A to 1C are also referred to as terminal devices 1.

[0038] The base station device 3 can be configured to include one or both of MCG (Master Cell Group) and SCG (Secondary Cell Group). MCG is a group of service cells that includes at least PCell (Primary Cell). SCG is a group of service cells that includes at least PSCell (Primary Secondary Cell). PCell can be a service cell given based on the initial connection. MCG can also be configured to include one or more SCells (Secondary Cell). SCG can also be configured to include one or more SCells. A serving cell identifier (serving cell identity) is a short identifier used to identify a serving cell. The serving cell identifier can be given by an upper layer parameter.

[0039] The frame structure is described below.

[0040] In a wireless communication system of one solution of the present embodiment, at least OFDM (Orthogonal Frequency Division Multiplex) is used. OFDM symbol is a time domain unit of OFDM. OFDM symbol includes at least one or more subcarriers. OFDM symbol can be converted into a time-continuous signal in baseband signal generation.

[0041] Subcarrier spacing (SCS: SubCarrier Spacing) can be determined by subcarrier spacing Δf=2 μ · 15kHz is given. For example, the subcarrier spacing configuration μ may be set to any one of 0, 1, 2, 3, 4 and / or 5. The subcarrier spacing configuration μ may be given by an upper layer parameter for a certain BWP (BandWidth Part).

[0042] In a wireless communication system according to one aspect of this embodiment, a time unit T is used. c To express the length of the time domain. Time unit T c Can be T c =1 / (Δf max ·N f ) is given by max It can be the maximum value of the subcarrier spacing supported by the wireless communication system of one solution of this embodiment. max It can also be Δf max =480kHz. f Can be N f =4096. The constant κ is κ = Δf max ·N f / (Δf ref N f，ref )=64. Δf ref It can be 15kHz. f，ref It can be 2048.

[0043] The constant κ can also be used to represent the reference subcarrier spacing and T c The constant κ may be used for the length of the subframe. The number of time slots included in the subframe may be given based at least on the constant κ. Δf ref is the reference subcarrier spacing, N f，ref is the value corresponding to the reference subcarrier spacing.

[0044] The transmission of the downlink and / or the transmission of the uplink is composed of a frame of 10 ms. The frame is composed of 10 subframes. The length of the subframe is 1 ms. The length of the frame can be given independently of the subcarrier spacing Δf. That is, the setting of the frame can be given independently of μ. The length of the subframe can also be given independently of the subcarrier spacing Δf. That is, the setting of the subframe can also be given independently of μ.

[0045] The number and index of the time slots included in the subframe can be given for setting μ for a certain subcarrier spacing. For example, the first time slot number n μ s It can be 0~N in a subframe subframe，μ slot -1 in ascending order. The number and index of the time slots included in the frame can also be given for setting the subcarrier spacing μ. For example, the second time slot number n μ s，f It can be 0~N in the frame frame，μ slot -1 are given in ascending order. slot symb OFDM symbols can be included in one time slot. slot symb The first slot number and the second slot number may be given based on at least part or all of the slot configuration and / or CP (Cyclic Prefix) configuration. The slot configuration may be given by at least the upper layer parameter tdd-UL-DL-ConfigurationCommon. The CP configuration may be given based on at least the upper layer parameter. The CP configuration may also be given based on at least the dedicated RRC signaling. The first slot number and the second slot number are also referred to as slot numbers (slot indices).

[0046] Figure 2 N represents one embodiment of the present embodiment. slot symb An example of the relationship between the subcarrier spacing setting μ and the CP setting. Figure 2 In A, for example, when the subcarrier spacing μ is set to 2 and the CP is set to a normal CP (normal cyclic prefix), N slot symb =14, N frame，μ slot =40, N subframe，μ slot =4. In addition, Figure 2 In B, for example, when the subcarrier spacing μ is set to 2 and the CP is set to an extended CP (extended cyclic prefix), Nslot symb =12, N frame，μ slot =40, N subframe，μ slot =4.

[0047] The following is a description of physical resources.

[0048] The antenna port is defined as follows: the channel through which symbols are transmitted at one antenna port can be estimated based on the channel through which other symbols are transmitted at the same antenna port. When the large-scale property of the channel through which symbols are transmitted at one antenna port can be estimated based on the channel through which symbols are transmitted at another antenna port, the two antenna ports are called QCL (Quasi Co-Located). The large-scale property may include at least the long-range property of the channel. The large-scale property may also include at least a part or all of delay spread, Doppler spread, Doppler shift, average gain, average delay, and beam parameters (spatial Rx parameters). The first antenna port and the second antenna port being QCL with respect to the beam parameters may mean that the receiving beam assumed by the receiving side for the first antenna port and the receiving beam assumed by the receiving side for the second antenna port are the same. The first antenna port and the second antenna port being QCL with respect to the beam parameters may also mean that the transmitting beam assumed by the receiving side for the first antenna port and the transmitting beam assumed by the receiving side for the second antenna port are the same. Terminal device 1 may assume that two antenna ports are QCL when the large-scale characteristics of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port. Two antenna ports being QCL may also mean assuming that two antenna ports are QCL.

[0049] Given N μ RB，x N RB sc subcarriers and N (μ) symb N subframe，μ symb The resource grids of OFDM symbols are used for setting the subcarrier spacing and the collection of carriers. μ RB，x N may represent the number of resource blocks given for setting μ for the subcarrier spacing of carrier x. μ RB，xIt may also be the maximum number of resource blocks given for setting the subcarrier spacing μ for carrier x. Carrier x represents either a downlink carrier or an uplink carrier. That is, x is "DL" or "UL". N μ RB Yes, including N μ RB，DL and / or N μ RB，UL the title. N RB sc The number of subcarriers included in a resource block can be represented. At least one resource grid can be given for each antenna port p and / or for each subcarrier spacing setting μ and / or for each transmission direction (Transmissiondirection) setting. The transmission direction includes at least downlink (DL: DownLink) and uplink (UL: UpLink). Hereinafter, a set of parameters including at least antenna port p, subcarrier spacing setting μ and part or all of the transmission direction settings is also referred to as a first wireless parameter set. That is, a resource grid can be given for each first wireless parameter set.

[0050] The carrier included in the serving cell in the downlink is called a downlink carrier (or downlink component carrier). The carrier included in the serving cell in the uplink is called an uplink carrier (uplink component carrier). The downlink component carrier and the uplink component carrier are collectively referred to as a component carrier (or carrier).

[0051] Each element in the resource grid given by each first radio parameter set is called a resource element. A resource element is represented by an index k in the frequency domain. sc and the time domain index l sym For a first radio parameter set, the resource element is determined by the index k in the frequency domain. sc and the time domain index l sym Determine. By the frequency domain index k sc and the time domain index l sym The determined resource element is also called resource element (k sc , l sym ). The frequency domain index k sc Indicates 0 to N μ RB N RB sc Any value between -1. μ RB It can be the number of resource blocks given for setting μ of subcarrier spacing. RB sc is the number of subcarriers included in the resource block, N RB sc = 12. Frequency domain index ksc It can correspond to the subcarrier index k sc . Time domain index l sym May correspond to OFDM symbol index l sym .

[0052] Figure 3 FIG. 1 is a schematic diagram showing an example of a resource grid in a subframe according to one embodiment of the present invention. Figure 3 In the resource grid, the horizontal axis is the index l in the time domain sym , the vertical axis is the index k in the frequency domain sc In a subframe, the frequency domain of the resource grid includes N μ RB N RB sc In a subframe, the time domain of the resource grid can include 14·2 μ OFDM symbols. A resource block consists of N RB sc The time domain of a resource block may correspond to one OFDM symbol. The time domain of a resource block may also correspond to 14 OFDM symbols. The time domain of a resource block may also correspond to one or more time slots. The time domain of a resource block may also correspond to one subframe.

[0053] The terminal device 1 can instruct to use only a subset of the resource grid for transmission and reception. The subset of the resource grid is also called BWP, and the BWP can be given based on at least part or all of the upper layer parameters and / or DCI. BWP is also called partial bandwidth (BP: bandwidth part). That is, the terminal device 1 may not instruct to use all sets of resource grids for transmission and reception. That is, the terminal device 1 may also instruct to use a part of the frequency resources within the resource grid for transmission and reception. A BWP can be composed of multiple resource blocks in the frequency domain. A BWP can also be composed of multiple resource blocks that are continuous in the frequency domain. The BWP set for the downlink carrier is also called the downlink BWP. The BWP set for the uplink carrier is also called the uplink BWP.

[0054] One or more downlink BWPs may be set for the terminal device 1. The terminal device 1 may attempt to receive a physical channel (e.g., PDCCH, PDSCH, SS / PBCH, etc.) in one downlink BWP among the one or more downlink BWPs. The one downlink BWP is also referred to as an activated downlink BWP.

[0055] One or more uplink BWPs may be set for the terminal device 1. The terminal device 1 may attempt to transmit a physical channel (eg, PUCCH, PUSCH, PRACH, etc.) in one uplink BWP among the one or more uplink BWPs. The one uplink BWP is also referred to as an activated uplink BWP.

[0056] A set of downlink BWPs may be set for each serving cell. The set of downlink BWPs may include one or more downlink BWPs. A set of uplink BWPs may also be set for each serving cell. The set of uplink BWPs may include one or more uplink BWPs.

[0057] The upper layer parameters are parameters included in the upper layer signal. The upper layer signal may be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Control Element). Here, the upper layer signal may be a RRC layer signal or a MAC layer signal.

[0058] The upper layer signal may be common RRC signaling. Common RRC signaling may include at least part or all of the following features C1 to C3.

[0059] Feature C1) Mapped to BCCH logical channel or CCCH logical channel

[0060] Feature C2) includes at least the radioResourceConfigCommon information element

[0061] Feature C3) Mapping to PBCH

[0062] The radioResourceConfigCommon information element may include information indicating common settings in the serving cell. The common settings in the serving cell may include at least PRACH settings. The PRACH settings may at least indicate one or more random access preamble indices. The PRACH settings may also at least indicate the time / frequency resources of the PRACH.

[0063] The upper layer signal may also be dedicated RRC signaling. Dedicated RRC signaling may have at least part or all of the following features D1 to D2.

[0064] Feature D1) is mapped to the DCCH logical channel

[0065] Feature D2) includes at least the radioResourceConfigDedicated information element

[0066] The radioResourceConfigDedicated information element may include at least information indicating a setting specific to the terminal device 1. The radioResourceConfigDedicated information element may also include at least information indicating a setting of a BWP. The setting of the BWP may indicate at least a frequency resource of the BWP.

[0067] For example, the MIB, the first system information, and the second system information may be included in the common RRC signaling. In addition, a message mapped to the DCCH logical channel and including at least the upper layer of the radioResourceConfigCommon information element may be included in the common RRC signaling. In addition, a message mapped to the DCCH logical channel and not including the upper layer of the radioResourceConfigCommon information element may be included in the dedicated RRC signaling. In addition, a message mapped to the DCCH logical channel and including at least the upper layer of the radioResourceConfigDedicated information element may be included in the dedicated RRC signaling.

[0068] The first system information may at least indicate a time index of a SS (Synchronization Signal) block. An SS block is also called an SS / PBCH block. An SS / PBCH block is also called an SS / PBCH. The first system information may also include at least information associated with a PRACH resource. The first system information may also include at least information associated with the setting of an initial connection. The second system information may be system information other than the first system information.

[0069] The radioResourceConfigDedicated information element may include at least information associated with PRACH resources. The radioResourceConfigDedicated information element may also include at least information associated with the setup of an initial connection.

[0070] The following describes physical channels and physical signals of various schemes of this embodiment.

[0071] An uplink physical channel may correspond to a set of resource elements that carry information generated in an upper layer. An uplink physical channel is a physical channel used in an uplink carrier. In a wireless communication system of one solution of this embodiment, at least some or all of the following uplink physical channels are used.

[0072] PUCCH (Physical Uplink Control CHannel: Physical Uplink Control Channel)

[0073] PUSCH (Physical Uplink Shared CHannel: Physical Uplink Shared Channel)

[0074] PRACH (Physical Random Access CHannel)

[0075] PUCCH can be used to send uplink control information (UCI: Uplink Control Information). Uplink control information includes part or all of the following: Channel State Information (CSI: Channel State Information), Scheduling Request (SR: Scheduling Request), and HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement: Hybrid Automatic Repeat request ACKnowledgement) corresponding to the transport block (TB: Transport block, MAC PDU: Medium Access Control Protocol Data Unit (Media Access Control Protocol Data Unit), DL-SCH: Downlink-Shared Channel (Downlink Shared Channel), PDSCH: Physical Downlink Shared Channel (Physical Downlink Shared Channel)).

[0076] The HARQ-ACK information may include at least a HARQ-ACK bit corresponding to at least one transport block. The HARQ-ACK bit may represent an ACK (acknowledgement: positive acknowledgment) or NACK (negative-acknowledgement: negative acknowledgment) corresponding to one or more transport blocks. The HARQ-ACK information may also include at least a HARQ-ACK codebook containing one or more HARQ-ACK bits. The correspondence between the HARQ-ACK bit and one or more transport blocks may be that the HARQ-ACK bit corresponds to the PDSCH including the one or more transport blocks. The HARQ-ACK bit may also represent an ACK or NACK corresponding to a CBG (Code Block Group: code block group) included in the transport block.

[0077] The scheduling request (SR) can be used at least to request resources for the PUSCH for 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 "a positive SR is sent". A positive SR can indicate that the terminal device 1 requests resources for the PUSCH for initial transmission. A positive SR can also indicate that the scheduling request is triggered (Trigger) by an upper layer. A positive SR can be sent when indicating that a scheduling request is sent by an upper layer. The scheduling request bit indicating a negative SR is also referred to as "a negative SR is sent". A negative SR can indicate that resources for the PUSCH for initial transmission are not requested by the terminal device 1. A negative SR can also indicate that a scheduling request is not triggered by an upper layer. A negative SR can also be sent when not indicating that a scheduling request is sent by an upper layer.

[0078] The channel state information may include at least a part or all of a channel quality indicator (CQI: Channel Quality Indicator), a precoding matrix indicator (PMI: Precoder Matrix Indicator) and a rank indicator (RI: Rank Indicator). CQI is an indicator associated with the quality of the channel (e.g., transmission strength), and PMI is an indicator indicating precoding. RI is an indicator indicating the transmission rank (or the number of transmission layers).

[0079] PUCCH supports PUCCH formats (PUCCH format 0 to PUCCH format 4). PUCCH formats can be mapped and sent to PUCCH. PUCCH formats can be sent via PUCCH. Sending a PUCCH format can be sending PUCCH.

[0080] PUSCH is used at least to send transport blocks (TB, MAC PDU, UL-SCH, PUSCH). PUSCH may also be used to send only a portion or all of transport blocks, HARQ-ACK information, channel state information, and scheduling requests. PUSCH is used at least to send random access messages 3.

[0081] PRACH is used at least to send a random access preamble (random access message 1). PRACH may also be used to indicate at least part or all of an initial connection establishment procedure, a handover procedure, a connection re-establishment procedure, synchronization (timing adjustment) of PUSCH transmission, and a request for resources for PUSCH. The random access preamble may be used to notify the base station device 3 of an index (random access preamble index) given by an upper layer of the terminal device 1.

[0082] exist Figure 1 In the uplink wireless communication, the following uplink physical signal is used. The uplink physical signal may not be used to transmit information output from the upper layer, but is used by the physical layer.

[0083] UL DMRS (UpLink Demodulation Reference Signal)

[0084] SRS (Sounding Reference Signal)

[0085] UL PTRS (UpLink Phase Tracking Reference Signal)

[0086] UL DMRS is associated with the transmission of PUSCH and / or PUCCH. UL DMRS is multiplexed with PUSCH or PUCCH. The base station device 3 can use UL DMRS to perform transmission path correction of PUSCH or PUCCH. Hereinafter, the transmission of PUSCH and UL DMRS associated with the PUSCH together will be referred to as simply transmitting PUSCH. Hereinafter, the transmission of PUCCH and UL DMRS associated with the PUCCH together will be referred to as simply transmitting PUCCH. The UL DMRS associated with PUSCH is also referred to as UL DMRS for PUSCH. The UL DMRS associated with PUCCH is also referred to as UL DMRS for PUCCH.

[0087] The SRS may not be associated with the transmission of the PUSCH or PUCCH. The base station device 3 may use the SRS to measure the channel state. The SRS may be transmitted at the end of a subframe in an uplink slot or in a predetermined number of OFDM symbols from the end.

[0088] The UL PTRS may be a reference signal at least for phase tracking. The UL PTRS may be associated with a UL DMRS group including at least antenna ports for one or more UL DMRS. The association of the UL PTRS with the UL DMRS group may be that the antenna port of the UL PTRS and part or all of the antenna ports included in the UL DMRS group are at least QCL. The UL DMRS group may be identified based at least on the antenna port with the smallest index among the UL DMRS included in the UL DMRS group. The UL PTRS may be mapped to the antenna port with the smallest index among one or more antenna ports to which a codeword is mapped. In the case where a codeword is mapped to at least the first layer and the second layer, the UL PTRS may be mapped to the first layer. The UL PTRS may also not be mapped to the second layer. The index of the antenna port to which the UL PTRS is mapped may be given based at least on the downlink control information.

[0089] exist Figure 1 In the downlink wireless communication from the base station device 3 to the terminal device 1, the following downlink physical channels are used. The downlink physical channels are used by the physical layer to transmit information output from the upper layer.

[0090] PBCH (Physical Broadcast Channel)

[0091] PDCCH (Physical Downlink Control Channel)

[0092] PDSCH (Physical Downlink Shared Channel)

[0093] PBCH is used at least to send the master information block (MIB: Master Information Block, BCH, Broadcast Channel). PBCH can be sent based on a specified transmission interval. PBCH can be sent at intervals of 80ms. PBCH can also be sent at intervals of 160ms. The content of the information included in the PBCH can be updated every 80ms. Part or all of the information included in the PBCH can be updated every 160ms. PBCH can be composed of 288 subcarriers. PBCH can also be constructed to include 2, 3 or 4 OFDM symbols. MIB may include information associated with an identifier (index) of a synchronization signal. MIB may also include information indicating at least a part of the number of the time slot in which the PBCH is sent, the number of the subframe and / or the number of the radio frame.

[0094] PDCCH is at least used to send downlink control information (DCI). PDCCH may include at least downlink control information for transmission. PDCCH may include downlink control information. Downlink control information is also called DCI format. Downlink control information may include at least one of downlink grant or uplink grant. The DCI format used for scheduling of PDSCH is also called downlink DCI format. The DCI format used for scheduling of PUSCH is also called uplink DCI format. Downlink grant is also called downlink assignment or downlink allocation. The uplink DCI format includes at least one or both of DCI format 0_0 and DCI format 0_1.

[0095] DCI format 0_0 is configured to include at least a part or all of 1A to 1E.

[0096] 1A) Identifier for DCI formats field

[0097] 1B) Frequency domain resource assignment field

[0098] 1C) Time domain resource assignment field

[0099] 1D) Frequency hopping flag field

[0100] 1E)MCS field (MCS field: Modulation and Coding Scheme field: Modulation and Coding Scheme field)

[0101] The DCI format specific field may be used at least to indicate which of one or more DCI formats the DCI format including the DCI format specific field corresponds to. The one or more DCI formats may be given based on at least a portion or all of DCI format 1_0, DCI format 1_1, DCI format 0_0 and / or DCI format 0_1.

[0102] The frequency domain resource allocation field may be used at least to indicate the allocation of frequency resources for a PUSCH scheduled by a DCI format including the frequency domain resource allocation field. The frequency domain resource allocation field is also called a FDRA (Frequency Domain Resource Allocation) field.

[0103] The time domain resource allocation field may be used at least to indicate allocation of time resources for a PUSCH scheduled by a DCI format including the time domain resource allocation field.

[0104] The frequency hopping flag field may be used at least to indicate whether frequency hopping is applied to a PUSCH scheduled by a DCI format including the frequency hopping flag field.

[0105] The MCS field may be used at least to indicate a portion or all of the modulation mode and / or target coding rate for the PUSCH scheduled by the DCI format including the MCS field. The target coding rate may be a target coding rate for the transport block of the PUSCH. The size of the transport block (TBS: Transport Block Size) may be given based at least on the target coding rate.

[0106] DCI format 0_1 ​​is configured to include at least a part or all of 2A to 2I.

[0107] 2A) DCI format specific fields

[0108] 2B) Frequency Domain Resource Allocation Field

[0109] 2C) Time Domain Resource Allocation Field

[0110] 2D) Frequency Hopping Flag Field

[0111] 2E) MCS field

[0112] 2F) CSI request field

[0113] 2G)BWP field

[0114] 2H) First UL DAI field (first downlink assignment index: first downlink assignment index)

[0115] 2I) Second UL DAI field (second downlink assignment index: second downlink assignment index)

[0116] The first UL DAI field is used to indicate at least the transmission status of the PDSCH. When a dynamic HARQ-ACK codebook is used, the size of the first UL DAI field may be 2 bits.

[0117] The second UL DAI field is used to indicate at least the transmission status of the PDSCH. In the case of using a dynamic HARQ-ACK codebook including two sub-codebooks, the size of the second UL DAI field may be 2 bits.

[0118] The BWP field may be used to indicate the uplink BWP to which the PUSCH scheduled by DCI format 0_1 ​​is mapped.

[0119] The CSI request field is at least used to indicate a CSI report. The size of the CSI request field may be given based on at least a parameter ReportTriggerSize of an upper layer.

[0120] The downlink DCI format includes at least one or both of DCI format 1_0 and DCI format 1_1.

[0121] DCI format 1_0 is configured to include at least a part or all of 3A to 3I.

[0122] 3A) Identifier for DCI formats field

[0123] 3B) Frequency domain resource assignment field

[0124] 3C) Time domain resource assignment field

[0125] 3D) Frequency hopping flag field

[0126] 3E)MCS field (MCS field: Modulation and Coding Scheme field)

[0127] 3F) First CSI request field

[0128] 3G)PDSCH-to-HARQ feedback timing indicator field

[0129] 3H)PUCCH resource indicator field

[0130] 3I) First DAI field (first Downlink Assignment Index field: first downlink assignment index field)

[0131] The timing indication field from PDSCH to HARQ feedback may be a field indicating timing K1. In the case where the index of the time slot of the OFDM symbol including the end of the PDSCH is time slot n, the index of the time slot including the PUCCH or PUSCH may be n+K1, and the PUCCH or PUSCH includes at least the HARQ-ACK information corresponding to the transport block included in the PDSCH. In the case where the index of the time slot of the OFDM symbol including the end of the PDSCH is time slot n, the index of the time slot including the OFDM symbol of the starting point of the PUCCH or the OFDM symbol of the starting point of the PUSCH may be n+K1, and the OFDM symbol of the starting point of the PUCCH or the OFDM symbol of the starting point of the PUSCH may include at least the HARQ-ACK information corresponding to the transport block included in the PDSCH.

[0132] Hereinafter, the PDSCH-to-HARQ feedback timing indication field (PDSCH-to-HARQ_feedback timingindicator field) may also be referred to as a HARQ indication field.

[0133] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set.

[0134] The details of the first DAI field will be described later.

[0135] DCI format 1_1 is configured to include at least a part or all of 4A to 4M.

[0136] 4A) Identifier for DCI formats field

[0137] 4B) Frequency domain resource assignment field

[0138] 4C) Time domain resource assignment field

[0139] 4D) Frequency hopping flag field

[0140] 4E)MCS field (MCS field: Modulation and Coding Scheme field)

[0141] 4F) First CSI request field

[0142] 4G)PDSCH-to-HARQ feedback timing indicator field

[0143] 4H)PUCCH resource indicator field

[0144] 4I) BWP field

[0145] 4J) PGI field (PDSCH Group Index field: PDSCH group index field)

[0146] 4K) NFI field (New Feedback Indicator field: New Feedback Indicator field)

[0147] 4L) NRPG field (Number of Requested PDSCH Groups field: Requested PDSCH group number field)

[0148] 4M) Second DAI field (second Downlink Assignment Index field: second downlink assignment index field)

[0149] The BWP field may be used to indicate a downlink BWP to which a PDSCH scheduled by DCI format 1_1 is mapped.

[0150] The PGI field may be used to indicate a PDSCH group identifier (PGI: PDSCH Group Index) corresponding to a PDSCH scheduled by DCI format 1_1. When the pdsch-HARQ-ACK-Codebook is set to enhancedDynamic-r16, the PGI field may be 1 bit. When the pdsch-HARQ-ACK-Codebook is not set to enhancedDynamic-r16, the PGI field may be 0 bits.

[0151] Terminal device 1 may associate a PGI with each PDSCH. The PGI of a certain PDSCH may be indicated based at least on the DCI format used for scheduling of the PDSCH. For example, a field indicating the PGI (PGI field) may be included in the DCI format. For example, a PDSCH group may be a collection of PDSCHs having the same PGI (PDSCH group identifier). A PDSCH group may be a PDSCH or a collection of more than one PDSCHs that associate the same PGI. The number of PDSCH groups set for terminal device 1 is N. group . N group It may be 1, 2, 3, 4, or any other integer greater than 0. The number of PDSCH groups that can be set for the terminal device 1 is N. group，max For example, the terminal device 1 can be set to group，max The number of PDSCH groups corresponding to the following integer values ​​can also be based on at least N group The terminal device 1 may determine the PDSCH group associated with a certain PDSCH based at least on the value of the PGI field included in the DCI field used for scheduling of the PDSCH.

[0152] The NRPG field can be used to indicate a requested PDSCH group. When the pdsch-HARQ-ACK-Codebook is set to enhancedDynamic-r16, the NRPG field can be 1 bit. When the pdsch-HARQ-ACK-Codebook is not set to enhancedDynamic-r16, the NRPG field can be 0 bits. The requested PDSCH group (RPG: Requested PDSCH Group) can be a PDSCH group corresponding to the HARQ-ACK information sent (reported) via the next PUCCH or PUSCH. The terminal device 1 can generate a HARQ-ACK codebook for the indicated RPG and send (report) via PUCCH or PUSCH. RPG (Requested PDSCH Group) may include one or more PDSCH groups. RPG can be represented based on at least the NRPG field included in the DCI format. The terminal device 1 may also determine the RPG based on at least the value of the NRPG field.

[0153] The NFI field can be used to indicate the NFI corresponding to the PDSCH group associated with the PDSCH scheduled by DCI format 1_1 (scheduled PDSCH group: scheduled PDSCH group) and / or the NFI corresponding to a PDSCH group different from the PDSCH group (non-scheduled PDSCH group: non-scheduled PDSCH group). When pdsch-HARQ-ACK-Codebook is set to enhancedDynamic-r16 and NFI-TotalDAI-Included-r16 is set to enable, the NRPG field can be 2 bits. The 2 bits of the NFI field can be used to indicate each of the NFI corresponding to the PDSCH group associated with the PDSCH scheduled by DCI format 1_1 (scheduled PDSCH group) and the NFI corresponding to a PDSCH group different from the PDSCH group (non-scheduled PDSCH group). When the pdsch-HARQ-ACK-Codebook is set to enhancedDynamic-r16 and NFI-TotalDAI-Included-r16 is not set, the NFI field may be 1 bit. The 1-bit NFI field may be used to indicate the NFI corresponding to the PDSCH group associated with the PDSCH scheduled by DCI format 1_1. When the pdsch-HARQ-ACK-Codebook is not set to enhancedDynamic-r16, the NFI field may be 0 bits.

[0154] The first DAI field and the second DAI field will be described later.

[0155] The DCI format 2_0 may be configured to include at least one or more slot format indicators (SFI: Slot Format Indicator).

[0156] Each DCI format (DCI format 1_0, DCI format 1_1, DCI format 0_0 and / or DCI format 0_1DCI format 1_1) may include fields different from the above-mentioned fields.

[0157] In various schemes of this embodiment, unless otherwise specified, the number of resource blocks refers to the number of resource blocks in the frequency domain.

[0158] The downlink grant is used to schedule at least one PDSCH in one serving cell.

[0159] The uplink grant is used to schedule at least one PUSCH in one serving cell.

[0160] A physical channel can be mapped to a serving cell. A physical channel can also be mapped to a BWP set to a carrier included in a serving cell.

[0161] One or more control resource sets (CORESET: COntrol REsourceSET) can be set in the terminal device 1. The terminal device 1 monitors (monitor) PDCCH in one or more control resource sets. Here, monitoring PDCCH in one or more control resource sets may include monitoring one or more PDCCHs corresponding to one or more control resource sets, respectively. It should be noted that the PDCCH may include one or more PDCCH candidates and / or a set of PDCCH candidates. In addition, monitoring PDCCH may include monitoring and detecting PDCCH and / or a DCI format sent via PDCCH.

[0162] The control resource set may represent a time domain / frequency domain to which one or more PDCCHs can be mapped. The control resource set may be an area where the terminal device 1 monitors the PDCCH. The control resource set may be composed of continuous resources (Localized resource). The control resource set may also be composed of non-continuous resources (distributed resource).

[0163] In the frequency domain, the mapping unit of the control resource set may be a resource block. For example, in the frequency domain, the mapping unit of the control resource set may be 6 resource blocks. In the time domain, the mapping unit of the control resource set may be an OFDM symbol. For example, in the time domain, the mapping unit of the control resource set may be 1 OFDM symbol.

[0164] The mapping of the control resource set to the resource block may be given at least based on an upper layer parameter. The upper layer parameter may include a bitmap for a resource block group (RBG: Resource Block Group). The resource block group may be given by 6 consecutive resource blocks.

[0165] The number of OFDM symbols constituting the control resource set may be given based on at least an upper layer parameter.

[0166] A certain control resource set may be a common control resource set. A common control resource set may be a control resource set commonly set for multiple terminal devices 1. The common control resource set may be given based on at least part or all of the MIB, the first system information, the second system information, the common RRC signaling, and the cell ID. For example, the time resources and / or frequency resources of the control resource set for monitoring the PDCCH for scheduling the first system information may be given based on at least the MIB.

[0167] The control resource set set in the MIB is also referred to as CORESET#0. CORESET#0 may be the control resource set of index #0.

[0168] A control resource set may also be a dedicated control resource set (Dedicated control resource set). A dedicated control resource set may be a control resource set that is set to be dedicated to the terminal device 1. The dedicated control resource set may be given based on at least a part or all of the dedicated RRC signaling and the C-RNTI value. Multiple control resource sets may be constructed in the terminal device 1, and each control resource set may be assigned an index (control resource set index). One or more control channel elements (CCE) may also be constructed in the control resource set, and each CCE may be assigned an index (CCE index).

[0169] The set of PDCCH candidates monitored by the terminal device 1 can be defined from the viewpoint of a search region. That is, the set of PDCCH candidates monitored by the terminal device 1 can be given based on the search region.

[0170] The search area may be configured to include one or more PDCCH candidates of one or more aggregation levels. The aggregation level of a PDCCH candidate may indicate the number of CCEs constituting the PDCCH. A PDDCH candidate may be mapped to one or more CCEs.

[0171] The terminal device 1 may monitor at least one or more search areas in a time slot where DRX (Discontinuous reception) is not set. DRX may be given based on at least an upper layer parameter. The terminal device 1 may also monitor at least one or more search area sets (Search space set) in a time slot where DRX is not set. Multiple search area sets may be formed in the terminal device 1. Each search area set may be assigned an index (search area set index).

[0172] The search area set may be configured to include at least one or more search areas. An index (search area index) may be assigned to each search area.

[0173] The search area sets may be associated with at least one control resource set respectively. The search area sets may also be included in one control resource set respectively. The search area sets may be given an index of a control resource set associated with the search area set respectively.

[0174] A monitoring period of the search area set may be set for each search area set. The monitoring period of the search area set may at least indicate an interval of time slots during which the terminal device 1 monitors the search area set. An upper layer parameter indicating at least the monitoring period of the search area set may be given for each search area set.

[0175] A monitoring offset of the search area set may be set for each search area set. The monitoring offset of the search area set may at least represent an offset from a reference index (e.g., time slot #0) of an index of a time slot in which the search area set is monitored by the terminal device 1. An upper layer parameter representing at least the monitoring offset of the search area set may be given for each search area set.

[0176] A monitoring pattern of the search area set may also be set for each search area set. The monitoring pattern of the search area set may represent an OFDM symbol of the starting point of the search area set for monitoring. The monitoring pattern of the search area set may be given by a bitmap of OFDM symbols representing the starting point in one or more time slots. At least an upper layer parameter representing the monitoring pattern of the search area set may be given for each search area set.

[0177] The monitoring occasion of the search area set may be given based on at least a part or all of the monitoring interval of the search area set, the monitoring offset of the search area set, the monitoring pattern of the search area set and / or the DRX setting.

[0178] Figure 4 FIG. 1 is a diagram showing an example of monitoring opportunities of a search area set according to one embodiment of the present invention. Figure 4 In the embodiment, search area set 91 and search area set 92 are set in primary cell 301 , search area set 93 is set in secondary cell 302 , and search area set 94 is set in secondary cell 303 .

[0179] exist Figure 4 In the figure, the blocks indicated by grid lines represent search area set 91, the blocks indicated by upper right diagonal lines represent search area set 92, the blocks indicated by upper left diagonal lines represent search area set 93, and the blocks indicated by horizontal lines represent search area set 94.

[0180] The monitoring interval of search area set 91 is set to 1 time slot, the monitoring offset of search area set 91 is set to 0 time slots, and the monitoring pattern of search area set 91 is set to [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunities of search area set 91 are the starting OFDM symbol (OFDM symbol #0) and the 8th OFDM symbol (OFDM symbol #7) in each time slot.

[0181] The monitoring interval of search area set 92 is set to 2 time slots, the monitoring offset of search area set 92 is set to 0 time slots, and the monitoring pattern of search area set 92 is set to [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunity of search area set 92 is the OFDM symbol (OFDM symbol #0) at the start point in each even time slot.

[0182] The monitoring interval of search area set 93 is set to 2 time slots, the monitoring offset of search area set 93 is set to 0 time slots, and the monitoring pattern of search area set 93 is set to [0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunity of search area set 93 is the 8th OFDM symbol (OFDM symbol #7) in each even time slot.

[0183] The monitoring interval of search area set 94 is set to 2 time slots, the monitoring offset of search area set 94 is set to 1 time slot, and the monitoring pattern of search area set 94 is set to [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunity of search area set 94 is the OFDM symbol (OFDM symbol #0) at the start point in each odd time slot.

[0184] The physical resources of the search area are composed of the constituent units of the control channel (CCE: Control Channel Element). CCE is composed of a specified number of resource element groups (REG: Resource Element Group). For example, CCE can be composed of 6 REGs. REG can be composed of 1 OFDM symbol of 1 PRB (Physical Resource Block). That is, REG can be constructed to include 12 resource elements (RE: Resource Element). PRB is also simply called RB (Resource Block: Resource Block).

[0185] The PDSCH is used at least to send a transport block. The PDSCH may also be used at least to send a random access message 2 (random access response). The PDSCH may also be used at least to send system information including parameters for initial access.

[0186] exist Figure 1 In the wireless communication of downlink, the following downlink physical signal is used. The downlink physical signal may not be used to transmit information output from the upper layer, but is used by the physical layer.

[0187] Synchronization signal (SS)

[0188] DL DMRS (DownLink DeModulation Reference Signal)

[0189] CSI-RS (Channel State Information-Reference Signal)

[0190] DL PTRS (DownLink Phase Tracking Reference Signal)

[0191] The synchronization signal is used for the terminal device 1 to obtain synchronization in the frequency domain and / or time domain of the downlink. The synchronization signal includes a PSS (Primary Synchronization Signal) and a SSS (Secondary Synchronization Signal).

[0192] The SS block (SS / PBCH block) is configured to include at least a part or all of the PSS, SSS, and PBCH.

[0193] The DL DMRS is associated with the transmission of the PBCH, PDCCH and / or PDSCH. The DL DMRS is multiplexed with the PBCH, PDCCH and / or PDSCH. The terminal device 1 can use the DL DMRS corresponding to the PBCH, PDCCH or PDSCH to perform transmission path correction of the PBCH, the PDCCH or the PDSCH.

[0194] The CSI-RS may be a signal used at least for calculating channel state information. The CSI-RS pattern assumed by the terminal device may be given at least by a higher layer parameter.

[0195] The PTRS may be a signal used at least for compensation of phase noise.The pattern of the PTRS assumed by the terminal device may be given based on at least an upper layer parameter and / or a DCI.

[0196] The DL PTRS may be associated with a DL DMRS group including at least an antenna port for one or more DL DMRSs.

[0197] Downlink physical channels and downlink physical signals are also referred to as downlink signals. Uplink physical channels and uplink physical signals are also referred to as uplink signals. Downlink signals and uplink signals are also collectively referred to as physical signals. Downlink signals and uplink signals are also collectively referred to as signals. Downlink physical channels and uplink physical channels are collectively referred to as physical channels. Downlink physical signals and uplink physical signals are collectively referred to as physical signals.

[0198] BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel) and DL-SCH (Downlink-Shared CHannel) are transport channels. The channels used in the medium access control (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 MAC PDU. The MAC layer performs HARQ (Hybrid Automatic Repeat reQuest) control for each transport block. The 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.

[0199] The base station device 3 and the terminal device 1 exchange (transmit and receive) upper layer signals at the upper layer. For example, the base station device 3 and the terminal device 1 can transmit and receive RRC signaling (RRC message: Radio Resource Control message, RRC information: Radio Resource Control information) at the radio resource control (RRC: Radio Resource Control) layer. In addition, the base station device 3 and the terminal device 1 can also transmit and receive MAC CE (Control Element: Control Element) at the MAC layer. Here, RRC signaling and / or MAC CE are also referred to as upper layer signals (higher layer signaling: upper layer signaling).

[0200] PUSCH and PDSCH can be used at least to send RRC signaling and / or MAC CE. Here, the RRC signaling sent by the base station device 3 through the PDSCH can be signaling common to multiple terminal devices 1 in the service cell. Signaling common to multiple terminal devices 1 in the service cell is also called common RRC signaling. The RRC signaling sent from the base station device 3 through the PDSCH can also be signaling dedicated to a certain terminal device 1 (also called dedicated signaling or UEspecific signaling). Signaling dedicated to the terminal device 1 is also called dedicated RRC signaling. Upper layer parameters specific to the service cell can be sent to multiple terminal devices 1 in the service cell using common signaling or sent to a certain terminal device 1 using dedicated signaling. UE-specific upper layer parameters can also be sent to a certain terminal device 1 using dedicated signaling.

[0201] BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel) and DCCH (Dedicated Control CHannel) are logical channels. For example, BCCH is an upper layer channel for sending MIB. In addition, CCCH (Common Control CHannel) is an upper layer channel for sending common information among multiple terminal devices 1. Here, CCCH can be used for terminal devices 1 that are not RRC connected, for example. In addition, DCCH (Dedicated Control CHannel) is an upper layer channel for sending dedicated control information (dedicated control information) to at least terminal device 1. Here, DCCH can be used for terminal devices 1 in RRC connection, for example.

[0202] The BCCH in a logical channel can be mapped to the BCH, DL-SCH or UL-SCH in a transport channel. The CCCH in a logical channel can be mapped to the DL-SCH or UL-SCH in a transport channel. The DCCH in a logical channel can be mapped to the DL-SCH or UL-SCH in a transport channel.

[0203] The UL-SCH in the transport channel can be mapped to the PUSCH in the physical channel. The DL-SCH in the transport channel can be mapped to the PDSCH in the physical channel. The BCH in the transport channel can be mapped to the PBCH in the physical channel.

[0204] Hereinafter, a configuration example of the terminal device 1 according to one aspect of the present embodiment will be described.

[0205] Figure 5 1 is a schematic block diagram showing the configuration of a terminal device 1 according to one embodiment of the present invention. Figure 5 As shown, the terminal device 1 is configured to include a wireless transceiver unit 10 and an upper layer processing unit 14. The wireless transceiver unit 10 is configured to include at least a part or all of an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The upper layer processing unit 14 is configured to include at least a part or all of a media access control layer processing unit 15 and a wireless resource control layer processing unit 16. The wireless transceiver unit 10 can be configured to include at least a part or all of a transmitting unit and a receiving unit.

[0206] The upper layer processing unit 14 outputs uplink data (transport block) generated by user operation or the like to the wireless transceiver unit 10. The upper layer processing unit 14 performs processing on the MAC layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.

[0207] The media access control layer processing unit 15 included in the upper layer processing unit 14 performs processing at the MAC layer.

[0208] 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 of the device itself. The radio resource control layer processing unit 16 sets various setting information / parameters based on the upper layer signal received from the base station device 3. That is, the radio resource control layer processing unit 16 sets various setting information / parameters based on the information indicating various setting information / parameters received from the base station device 3. It should be noted that the setting information may include information associated with the processing or setting of the physical channel or physical signal (that is, the physical layer), the MAC layer, the PDCP layer, the RLC layer, and the RRC layer. The parameter may be an upper layer parameter.

[0209] The wireless transceiver 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. The wireless transceiver 10 separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. The wireless transceiver 10 generates a physical signal by modulating, encoding, and generating a baseband signal (converting to a time-continuous signal) the data, and sends it to the base station device 3.

[0210] The RF unit 12 converts (down-converts) the signal received via the antenna unit 11 into a baseband signal by orthogonal demodulation, and removes unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit.

[0211] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes a portion corresponding to a CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT) on the signal after the CP is removed, and extracts a signal in the frequency domain.

[0212] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the data to generate OFDM symbols, adds a CP to the generated OFDM symbols 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.

[0213] The RF unit 12 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 13, up-converts the analog signal to a carrier frequency, and transmits it via the antenna unit 11. In addition, the RF unit 12 amplifies the power. In addition, the RF unit 12 may also have a function of controlling the transmission power. The RF unit 12 is also called a transmission power control unit.

[0214] Hereinafter, a configuration example of the base station device 3 according to one aspect of the present embodiment will be described.

[0215] Figure 6 1 is a schematic block diagram showing the configuration of a base station device 3 according to one embodiment of the present invention. Figure 6 As shown, the base station device 3 is configured to include a wireless transceiver unit 30 and an upper layer processing unit 34. The wireless transceiver unit 30 is configured to include an antenna unit 31, an RF unit 32, and a baseband unit 33. The upper layer processing unit 34 is configured to include a media access control layer processing unit 35 and a wireless resource control layer processing unit 36. The wireless transceiver unit 30 can be configured to include at least a part or all of a transmitting unit and a receiving unit.

[0216] The upper layer processing unit 34 performs processing of the MAC layer, the PDCP layer, the RLC layer, and the RRC layer.

[0217] The media access control layer processing unit 35 included in the upper layer processing unit 34 performs processing at the MAC layer.

[0218] The wireless resource control layer processing unit 36 ​​of the upper layer processing unit 34 performs RRC layer processing. The wireless resource control layer processing unit 36 ​​generates or obtains downlink data (transmission block), system information, RRC message, MAC CE, etc. configured on the PDSCH from the upper node, and outputs them to the wireless transceiver unit 30. In addition, the wireless resource control layer processing unit 36 ​​manages various setting information / parameters of each terminal device 1. The wireless resource control layer processing unit 36 ​​can set various setting information / parameters for each terminal device 1 via the upper layer signal. That is, the wireless resource control layer processing unit 36 ​​sends / broadcasts information representing various setting information / parameters. It should be noted that the setting information may include information associated with the processing or setting of the physical channel or physical signal (that is, the physical layer), MAC layer, PDCP layer, RLC layer, and RRC layer. The parameter may be an upper layer parameter.

[0219] Since the function of the wireless transceiver 30 is the same as that of the wireless transceiver 10 , the description thereof will be omitted.

[0220] Each unit denoted by reference numerals 10 to 16 included in the terminal device 1 may be configured as a circuit. Each unit denoted by reference numerals 30 to 36 included in the base station device 3 may be configured as a circuit.

[0221] The terminal device 1 may implement carrier sense before sending a physical signal. In addition, the base station device 3 may implement carrier sense before sending a physical signal. Carrier sense may be energy detection implemented in a radio channel. Whether the physical signal can be sent may be determined based on the carrier sense implemented before sending the physical signal. For example, when the energy detected by the carrier sense implemented before sending the physical signal is greater than a prescribed threshold, it may be determined that the physical channel may not be sent or cannot be sent. In addition, when the energy detected by the carrier sense implemented before sending the physical signal is less than a prescribed threshold, it may be determined that the physical channel may be sent or can be sent. In addition, when the energy detected by the carrier sense implemented before sending the physical signal is equal to a prescribed threshold, the physical channel may be sent or may not be sent. That is, when the energy detected by the carrier sense implemented before sending the physical signal is equal to a prescribed threshold, it may be determined that it cannot be sent or it may be determined that it can be sent.

[0222] The process of determining whether a physical channel can be sent based on carrier sensing is also called LBT (Listen Before Talk). The state in which a physical signal cannot be sent as a result of LBT is also called a busy state or busy. For example, a busy state may be a state in which the energy detected by carrier sensing is greater than a specified threshold. In addition, a state in which a physical signal can be sent as a result of LBT is also called an idle state or idle. For example, an idle state may be a state in which the energy detected by carrier sensing is less than a specified threshold.

[0223] NR-U (New Radio-Unlicensed) may be applied in a certain component carrier. NR-U may also be applied in a certain service cell. The application of NR-U in a certain component carrier (or a certain service cell) may include at least a part or all of the following elements A1 to A6. Technology (framework, composition).

[0224] Element A1: Constructing a second SS burst set in the certain component carrier (or the certain serving cell)

[0225] Element A2: The base station device 3 sends a second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0226] Element A3: The terminal device 1 receives the second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0227] Element A4: The base station device 3 sends PDCCH in a concentrated manner in the second type 0 PDCCH common search area of ​​the certain component carrier (or the certain serving cell).

[0228] Element A5: The terminal device 1 receives the PDCCH in the second type 0 PDCCH common search area of ​​the certain component carrier (or the certain serving cell)

[0229] Element A6: A higher layer parameter associated with NR-U (e.g., a field included in the MIB) indicates a first value (e.g., 1)

[0230] It is also possible not to apply NR-U (New Radio-Unlicensed) in a certain component carrier. It is also possible not to apply NR-U in a certain service cell. Not applying NR-U in a certain component carrier (or a certain service cell) may include at least a part or all of the following elements B1 to B6. Technology (framework, composition).

[0231] Element B1: Constructing the first SS burst set in the certain component carrier (or the certain serving cell)

[0232] Element B2: The base station device 3 sends the first SS / PBCH block in the certain component carrier (or the certain serving cell)

[0233] Element B3: The terminal device 1 receives the first SS / PBCH block in the certain component carrier (or the certain serving cell)

[0234] Element B4: The base station device 3 sends PDCCH in the first type 0 PDCCH common search area of ​​the certain component carrier (or the certain serving cell)

[0235] Element B5: Terminal device 1 receives PDCCH in the first type 0 PDCCH common search area of ​​the certain component carrier (or the certain serving cell)

[0236] Element B6: A higher layer parameter associated with NR-U (e.g., a field included in the MIB) indicates a value different from the first value (e.g., 0)

[0237] A certain component carrier may be set as a licensed band. A certain serving cell may be set as a licensed band. Here, setting a certain component carrier (or a certain serving cell) as a licensed band may include at least part or all of the following settings 1 to 3.

[0238] Setting 1: For a component carrier (or a serving cell), an upper layer parameter indicating operation in the licensed band is given, or for a component carrier (or a serving cell), an upper layer parameter indicating operation in the unlicensed band is not given.

[0239] Setting 2: Setting a component carrier (or a serving cell) to operate in the licensed band or not setting a component carrier (or a serving cell) to operate in the unlicensed band

[0240] Scenario 3: A component carrier (or a serving cell) is included in the licensed band or a component carrier (or a serving cell) is not included in the unlicensed band

[0241] The authorized frequency band may be a frequency band in which a terminal device that (expects) to operate in the authorized frequency band requests wireless station authorization. The authorized frequency band may also be a frequency band in which operation is authorized only by terminal devices manufactured by operators (businesses, enterprises, groups, and companies) that have retained wireless station authorization. The unlicensed frequency band may be a frequency band in which a channel access process is not requested before sending a physical signal.

[0242] An unlicensed band may be a band in which a wireless station authorization is not requested for a terminal device that (expects) to operate in the unlicensed band. An unlicensed band may be a band in which a terminal device that is manufactured by a part or all of an operator that stores wireless station authorization and / or an operator that does not store wireless station authorization is authorized to operate. An unlicensed band may be a band in which a channel intervention process is requested before a physical signal is sent.

[0243] Whether to apply NR-U in a certain component carrier (or a certain service cell) can be determined at least based on whether the certain component carrier (or the certain service cell) is set as a frequency band that can operate in an unlicensed band (for example, a frequency band that can only operate in an unlicensed band). For example, a list of frequency bands designed for NR or carrier aggregation of NR can be specified. For example, in the case where a certain frequency band is included in a frequency band in which one or more frequency bands in the list can operate in an unlicensed band (for example, a frequency band that can only operate in an unlicensed band), NR-U can be applied in the certain frequency band. In addition, in the case where a certain frequency band is not included in a frequency band in which one or more frequency bands in the list can operate in an unlicensed band (for example, a frequency band that can only operate in an unlicensed band), NR-U may not be applied in the certain frequency band, but a normal NR (for example, NR of Release 15 or NR other than NR-U of Release 16) may be applied.

[0244] Whether NR-U is applied in a certain component carrier (or a certain service cell) can be determined at least based on whether the component carrier (or the service cell) is set as a frequency band that can operate NR-U (for example, a frequency band that can only operate in NR-U). For example, in the case where a list of frequency bands designed for the operation of NR or NR carrier aggregation is specified, and one or more frequency bands in the list are specified as frequency bands that can operate NR-U (for example, frequency bands that can only operate NR-U), if the frequency band set for the component carrier (or the service cell) is any one 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 may not be applied, and a normal NR (for example, NR of version 15 or NR other than NR-U of version 16) may be applied.

[0245] Whether NR-U is applied in a certain component carrier (or a certain service cell) can be determined based on the information included in the system information (for example, Master Information Block (MIB) or Physical Broadcast Channel (PBCH)). For example, the MIB includes information indicating whether NR-U is applied. When the information indicates the application of NR-U, NR-U can be applied to the service cell corresponding to the MIB. On the other hand, when the information does not indicate the application of NR-U, NR-U may not be applied to the service cell corresponding to the MIB, but the usual NR may be applied. Alternatively, the information may indicate whether it is possible to operate in an unlicensed band.

[0246] A certain component carrier may be set as an unlicensed frequency band. A certain serving cell may be set as an unlicensed frequency band. Here, setting a certain component carrier (or a certain serving cell) as an unlicensed frequency band may include at least part or all of the following settings 4 to 6.

[0247] Setting 4: For a component carrier (or a serving cell), an upper layer parameter indicating operation in an unlicensed band is given

[0248] Setting 5: Setting a component carrier (or a serving cell) to operate in the unlicensed band

[0249] Scenario 6: A component carrier (or a serving cell) is included in the unlicensed band

[0250] The following description assumes that NR-U is applied in the component carrier or not. It should be noted that "NR-U is applied in the component carrier" can be "NR-U is applied in the serving cell", and "NR-U is not applied in the component carrier" can be "NR-U is not applied in the serving cell".

[0251] For example, when NR-U is not applied in a certain component carrier, the terminal device 1 can receive the first SS / PBCH block. In addition, when NR-U is not applied in a certain component carrier, the terminal device 1 can receive the first PDCCH in the first type 0PDCCH common search area set. In addition, when NR-U is not applied in a certain component carrier, the base station device 3 can send the first SS / PBCH block. In addition, when NR-U is not applied in a certain component carrier, the base station device 3 can send the first PDCCH in the first type 0PDCCH common search area set. The first SS / PBCH block can be received in any one of the SS / PBCH block candidates included in the first SS burst set. The first SS / PBCH block can also be sent in any one of the SS / PBCH block candidates included in the first SS burst set.

[0252] The terminal device 1 can multiplex the uplink control information (UCI) and send it to the PUCCH. The terminal device 1 can also multiplex the UCI and send it to the PUSCH. The UCI includes: the channel state information (Channel State Information: CSI) of the downlink, the scheduling request (Scheduling Request: SR) indicating the request for PUSCH resources, and at least one of the HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement: Hybrid Automatic Repeat request ACKnowledgement) information for downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU (Media Access Control Protocol Data Unit), Downlink-Shared Channel: DL-SCH (Downlink Shared Channel), Physical Downlink Shared Channel: PDSCH (Physical Downlink Shared Channel)).

[0253] The HARQ control for one transport block (TB) may be referred to as a HARQ process. The HARQ control may be performed in parallel for a plurality of transport blocks (TBs). A HARQ process identifier may be associated with each HARQ process.

[0254] The NFI (New Feedback Indicator) field may be a DCI field indicating whether HARQ-ACK information including a HARQ-ACK bit corresponding to a transport block of a PDSCH is correctly detected. The NFI field may be a field indicating whether the HARQ-ACK bit stored in a recording medium such as a memory is erased (refreshed).

[0255] For example, the terminal device 1 may save the value of the NFI bit corresponding to each PDSCH group represented by the DCI format after sending the HARQ-ACK bit corresponding to the transport block included in the PDSCH scheduled by the DCI format. For example, the terminal device 1 may save the value of the NFI bit corresponding to each PDSCH group represented by the DCI format when receiving the DCI format. Here, for the PDSCH, the received NFI bit may be referred to as the NFI bit indicated by the NFI field included in the DCI format for scheduling the PDSCH. For the PDSCH, saving the NFI bit may be referred to as the NFI bit saved in the terminal device 1 before the DCI format for scheduling the PDSCH is detected. For each PDSCH group, the initial value of the value of the saved NFI bit may be pre-set to 0. The terminal device 1 may compare the value of the received NFI bit with the value of the saved NFI bit to determine whether the NFI bit corresponding to the PDSCH group is flipped. In the case where the received NFI bit is different from the value of the saved NFI bit, the terminal device 1 may determine that the NFI bit is flipped. The terminal device 1 can determine that: for the PDSCH group, compared with the value of the NFI bit received first (that is, the saved NFI bit), the value of the NFI bit (that is, the received NFI bit) is flipped, and the HARQ-ACK information corresponding to the PDSCH group is detected in the base station device 3. For example, when the HARQ-ACK information corresponding to the PDSCH group is detected, the base station device 3 can flip the NFI bit corresponding to the PDSCH group. When the value of the received NFI bit is equal to the value of the saved NFI bit, it can be determined that the NFI bit is not flipped. The terminal device 1 can determine that: for the PDSCH group, compared with the value of the NFI bit received first (that is, the saved NFI bit), the value of the NFI bit (that is, the received NFI bit) is not flipped, and the HARQ-ACK information corresponding to the PDSCH group is not detected in the base station device 3. For example, when HARQ-ACK information corresponding to a PDSCH group is not detected, the base station device 3 may not invert the NFI bit corresponding to the PDSCH group. Here, inverting means switching to a different value.

[0256] The receive NFI may be composed of one or more receive NFI bits. Each entry of the receive NFI may be a receive NFI bit corresponding to each PDSCH group. The save NFI may be composed of one or more save NFI bits. Each entry of the save NFI may be a save NFI bit corresponding to each PDSCH group.

[0257] When generating a HARQ-ACK codebook corresponding to a certain PDSCH group, the terminal device 1 may delete the reported HARQ-ACK information (HARQ-ACK information other than the HARQ-ACK information that has not been reported) from the HARQ-ACK codebook corresponding to the PDSCH group when the NFI bit is flipped compared to the value of the NFI bit received first (i.e., the NFI bit is saved) for the PDSCH group (or may not include it). The terminal device 1 may also not delete the HARQ-ACK information corresponding to the PDSCH (or may not include it) when there is a PDSCH detected in the PDSCH group and the HARQ-ACK information has not been reported. That is, the terminal device 1 may multiplex the HARQ-ACK information corresponding to the PDSCH with the above-mentioned HARQ-ACK codebook. The terminal device 1 may also refresh (flush) the reported HARQ-ACK information for one or more HARQ-ACK information corresponding to the PDSCH group whose NFI bit is flipped, and not refresh the unreported HARQ-ACK information. Here, refreshing means returning the HARQ-ACK information to an initial value (e.g., NACK). When the terminal device 1 receives an NFI that has been flipped and then sends a HARQ-ACK codebook corresponding to the PDSCH group for the NFI bit, the terminal device 1 uses the unrefreshed HARQ-ACK information (unreported HARQ-ACK information) to generate and send the HARQ-ACK codebook. When the terminal device 1 receives an NFI that has not been flipped and then sends a HARQ-ACK codebook corresponding to the PDSCH group for the NFI bit, the terminal device 1 uses the unrefreshed HARQ-ACK information (reported HARQ-ACK information and unreported HARQ-ACK information) to generate and send the HARQ-ACK codebook.

[0258] The terminal device 1 may determine the HARQ-ACK codebook based at least on whether the NFI bit is flipped. The terminal device 1 may also determine the HARQ-ACK codebook corresponding to a certain PDSCH group based at least on whether the saved NFI bit and the received NFI bit corresponding to the certain PDSCH group are flipped.

[0259] The value of K1 (information or parameter indicated by the timing indication field from PDSCH to HARQ feedback) indicated by the DCI format included in the PDCCH can be a numerical value or a non-numerical value. Here, the numerical value means a value represented by a number, for example, it can be a value in {0, 1, 2, ..., 15}. The non-numerical value can mean a value other than a number, or it can mean that it does not represent a numerical value. The following describes the application of the numerical value of K1 and the non-numerical value of K1. For example, the PDSCH scheduled by the DCI format is sent by the base station device 3 in time slot n and received by the terminal device 1. In the case where the value of K1 indicated by the DCI format is a numerical value, the terminal device 1 can send (report) the HARQ-ACK information corresponding to the PDSCH via PUCCH or PUSCH in time slot n+K1. In the case where the value of K1 indicated by the DCI format is a non-numerical value, the terminal device 1 can postpone reporting the HARQ-ACK information corresponding to the PDSCH. In the case where a non-numeric value of K1 is indicated by a DCI format including scheduling information of a PDSCH, the terminal device 1 may delay reporting the HARQ-ACK information corresponding to the PDSCH. For example, the terminal device 1 may store the HARQ-ACK information in a recording medium such as a memory, and may not send (report) the HARQ-ACK information via the next PUCCH or PUSCH, but may trigger the sending of the HARQ-ACK information based on at least a DCI format other than the above-mentioned DCI format to send (report) the HARQ-ACK information.

[0260] The non-numeric value of K1 may be included in the sequence of the first upper layer parameter. The first upper layer parameter may be an upper layer parameter dl-DataToUL-ACK. The first upper layer parameter may be an upper layer parameter different from the upper layer parameter dl-DataToUL-ACK. The value of K1 may be a value indicated by the timing indication field from PDSCH to HARQ feedback included in DCI format 1_0 or DCI format 1_1 in the sequence of the first upper layer parameter. For example, the sequence of the first upper layer parameter is set to {0, 1, 2, 3, 4, 5, 15, a non-numeric value}, and assuming that the number of bits of the timing indication field from PDSCH to HARQ feedback is 3, the code point "000" of the timing indication field from PDSCH to HARQ feedback may indicate that the value of K1 is 0, the code point "001" may indicate that the value of K1 is 1, and the code point "111" may indicate that the value of K1 is a non-numeric value. For example, the sequence of the first upper layer parameter is set to {non-numeric value, 0, 1, 2, 3, 4, 5, 15}, and assuming that the number of bits of the timing indication field from PDSCH to HARQ feedback is 3, the code point "000" of the timing indication field from PDSCH to HARQ feedback can indicate that the value of K1 is a non-numeric value, the code point "001" can indicate that the value of K1 is 0, and the code point "111" can indicate that the value of K1 is 15.

[0261] For example, the timing indication field from PDSCH to HARQ feedback included in DCI format 1_0 may not indicate a non-numeric value. For example, a certain code point of the timing indication field from PDSCH to HARQ feedback included in DCI format 1_0 may indicate a non-numeric value. For example, the timing indication field from PDSCH to HARQ feedback included in DCI format 1_1 may not indicate a non-numeric value. For example, a certain code point of the timing indication field from PDSCH to HARQ feedback included in DCI format 1_1 may indicate a non-numeric value.

[0262] Figure 7 This is a diagram showing an example of correspondence between a monitoring occasion for a search space set and a monitoring occasion for PDCCH according to one scheme of the present embodiment. Figure 7 In the example, the monitoring opportunity of the search area set in the primary cell is the OFDM symbol at the start of the time slot, and the monitoring opportunity of the search area set in the secondary cell is the OFDM symbol at the start of the time slot and the OFDM symbol in the middle of the time slot (for example, OFDM symbol #7). Figure 7In the example, the monitoring opportunity of the PDCCH corresponds to the OFDM symbol at the start of time slot #n and the OFDM symbol in the middle of time slot #n, and the OFDM symbol at the start of time slot #n+1 and the OFDM symbol in the middle of time slot #n+1. That is, the monitoring opportunity of the PDCCH can be defined as the opportunity (occasion) of setting the monitoring opportunity of the search area set for at least any one of the one or more service cells. In addition, the monitoring opportunity of the PDCCH corresponds to the index of the OFDM symbol of the monitoring opportunity of setting the search area set for at least any one of the one or more service cells.

[0263] In a time slot, the monitoring opportunities of the search area set starting from a certain OFDM symbol index may correspond to the monitoring opportunities of the PDCCH starting from the certain OFDM symbol index. The monitoring opportunities of the PDCCH starting from a certain OFDM symbol index may correspond to the monitoring opportunities of the search area set starting from a certain OFDM symbol index, respectively.

[0264] The terminal device 1 can determine a set of monitoring opportunities for PDCCH for HARQ-ACK information sent in the PUCCH configured in the time slot (slot#n) of index n based at least on a part or all of the value of the timing K1 and the value of the time slot offset K0. The set of monitoring opportunities for PDCCH for HARQ-ACK information sent in the PUCCH configured in the time slot of index n is also referred to as a set of monitoring opportunities for PDCCH for time slot n (monitoring occasion for PDCCH for slot#n). Here, the set of monitoring opportunities for the PDCCH includes M monitoring opportunities for PDCCH. For example, the time slot offset K0 can be represented based at least on the value of the time domain resource allocation field included in the downlink DCI format. The time slot offset K0 represents the value of the number of time slots (time slot difference) from the time slot including the last OFDM symbol of the PDCCH configured with the DCI format to the OFDM symbol of the starting point of the PDSCH scheduled by the DCI format, and the DCI format includes a time domain resource allocation field representing the time slot offset K0.

[0265] Figure 8 1 is a diagram showing an example of the configuration of a set of monitoring opportunities for the PDCCH in time slot n according to one scheme of the present embodiment. Figure 8 In the example, the monitoring opportunity of the search area set in the primary cell is the OFDM symbol at the start of the time slot, and the monitoring opportunity of the search area set in the secondary cell is the OFDM symbol at the start of the time slot and the OFDM symbol in the middle of the time slot (for example, OFDM symbol #7). Figure 8In FIG. 8 , the monitoring opportunities of the search area set in the primary cell are composed of 801 and 804, and the monitoring opportunities of the search area set in the secondary cell are composed of 802, 803, 805, and 806. Figure 8 In , DCI format 811 is detected in 802 , DCI format 812 is detected in 804 , DCI format 813 is detected in 805 , and DCI format 814 is detected in 806 .

[0266] For example, in a case where HARQ-ACK information is sent in time slot n based at least on the timing K1 and time slot offset K0 represented by DCI format 811, the terminal device 1 may determine the monitoring opportunity of the PDCCH defined at least based on the 801 as the PDCCH monitoring opportunity for time slot n. For example, in a case where HARQ-ACK information is not sent in time slot n based at least on the timing K1 and time slot offset K0 represented by DCI format 812, and HARQ-ACK information is not sent in time slot n based at least on the timing K1 and time slot offset K0 represented by DCI format 813, the terminal device 1 may also not determine the monitoring opportunity of the PDCCH defined at least based on part or all of the definitions in 804 and 805 as the PDCCH monitoring opportunity for time slot n. For example, when HARQ-ACK information is sent in time slot n, indicated at least based on timing K1 and time slot offset K0 indicated by DCI format 814, terminal device 1 may determine the monitoring opportunity of the PDCCH defined at least based on 806 as the PDCCH monitoring opportunity for time slot n.

[0267] That is, when the DCI format detected in the monitoring opportunity of any search area set corresponding to the monitoring opportunity of a certain PDCCH triggers the sending of HARQ-ACK information in time slot n, the terminal device 1 can determine the monitoring opportunity of the PDCCH as the PDCCH monitoring opportunity for time slot n. In addition, when the DCI format detected in the monitoring opportunity of the search area set corresponding to the monitoring opportunity of a certain PDCCH does not trigger the sending of HARQ-ACK information in time slot n, the terminal device 1 may not determine the monitoring opportunity of the PDCCH as the PDCCH monitoring opportunity for time slot n. In addition, when the DCI format is not detected in the monitoring opportunity of the search area set corresponding to the monitoring opportunity of a certain PDCCH, the terminal device 1 may not determine the monitoring opportunity of the PDCCH as the PDCCH monitoring opportunity for time slot n.

[0268] The PUCCH resource for sending HARQ-ACK information in time slot n can be determined based on at least the PUCCH resource indication field included in the last DCI format of one or more DCI formats detected in the set of monitoring opportunities for the PDCCH of time slot n. Here, the one or more DCI formats trigger the sending of HARQ-ACK information in time slot n respectively. The last DCI format can be a DCI format corresponding to the last index (largest index) in the DCI format detected in the set of monitoring opportunities for the PDCCH of time slot n. The index of the DCI format in the set of monitoring opportunities for the PDCCH of the time slot n is given in ascending order relative to the index of the service cell in which the DCI format is detected, and then the index of the monitoring opportunity of the PDCCH in which the DCI format is detected is given in ascending order. The index of the monitoring opportunity of the PDCCH is given in ascending order on the time axis.

[0269] The second upper layer parameter may include the generation of HARQ-ACK information and upper layer parameters related to the report. The first value in the second upper layer parameter may correspond to a previous specification in which NR-U is not applied. The second value in the second upper layer parameter may also correspond to a specification in which NR-U is applied. The upper layer parameter pdsch-HARQ-ACK-Codebook may be an upper layer parameter indicating the type of the HARQ-ACK codebook. The upper layer parameter pdsch-HARQ-ACK-Codebook may be assigned any one of the values ​​semi-static and dynamic. The upper layer parameter pdsch-HARQ-ACK-Codebook may be assigned the value of enhancedDynamic-r16. The value of enhancedDynamic-r16 in the upper layer parameter pdsch-HARQ-ACK-Codebook may correspond to the application of NR-U. When applying NR-U, the terminal device 1 may be set with part or all of the following settings. Here, the setting of the upper layer parameters related to the HARQ-ACK codebook when applying NR-U may be referred to as the NR-U HARQ-ACK setting.

[0270] Setting 1: Assigned the second upper layer parameters

[0271] Setting 2: The second upper layer parameter is assigned the second value

[0272] Setting 3: The upper layer parameter pdsch-HARQ-ACK-Codebook is assigned enhancedDynamic-r16

[0273] In the case where the upper layer parameter pdsch-HARQ-ACK-Codebook is assigned a semi-static value, when the HARQ-ACK codebook is generated, the size of the HARQ-ACK codebook can be pre-determined semi-statically at least based on the upper layer parameter. That is, the size of the HARQ-ACK codebook may not depend on the actual detection status of the DCI format. In the case where the upper layer parameter pdsch-HARQ-ACK-Codebook is assigned a dynamic value, when the HARQ-ACK codebook is generated, the size of the HARQ-ACK codebook may be dynamically determined based on at least the count DAI and / or total DAI indicated by the detected DCI format. In the case where the upper layer parameter pdsch-HARQ-ACK-Codebook is assigned a semi-static or dynamic value, the terminal device 1 may not expect more than one PDSCH group. When the upper layer parameter pdsch-HARQ-ACK-Codebook is assigned the value of enhancedDynamic-r16, a HARQ-ACK codebook or sub-codebook may be generated for each PDSCH group. When the upper layer parameter pdsch-HARQ-ACK-Codebook is assigned the value of enhancedDynamic-r16, the terminal device 1 may not expect one or more PDSCH groups.

[0274] In the case where the terminal device 1 gives the NR-U HARQ-ACK setting, for the PDSCH group g associated with the scheduled PDSCH, the monitoring opportunity of the PDCCH corresponding to the DCI format that satisfies at least part or all of conditions A1, A2, and A3 is included in the set of monitoring opportunities for the PDCCH for time slot n. The base station device 3 can expect that for the PDSCH group g, the monitoring opportunity of the PDCCH that triggers the transmission of the HARQ-ACK information corresponding to the NFI bit corresponding to the PDSCH group g is triggered after the time point when the NFI bit corresponding to the PDSCH group g is last flipped. The set of monitoring opportunities for the PDCCH in the terminal device 1 is determined based on at least the flip state of the NFI bit indicated to the base station device 3, thereby avoiding ambiguity in the identification of the receiving and transmitting state of the HARQ-ACK information between the terminal device 1 and the base station device 3, thereby enabling efficient transmission and reception of the HARQ-ACK information.

[0275] Condition A1: Triggering the transmission of HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format via the PUCCH in time slot n

[0276] Condition A2: PDSCH group g is indicated by the PGI field included in the DCI format

[0277] Condition A3: The DCI format is detected after the time point at which the NFI bit corresponding to PDSCH group g is flipped last occurs

[0278] Here, the event in which the NFI bit is flipped indicates an event in which the received NFI is flipped compared to the stored NFI.

[0279] Fig. 9 This is a diagram showing an example of the configuration of a set of monitoring opportunities for the PDCCH in time slot n according to one aspect of the present embodiment. Fig.10 This is a diagram showing an example of the configuration of a set of monitoring opportunities for the PDCCH in time slot n according to one aspect of the present embodiment.

[0280] exist Fig. 9 and Fig.10 In the figure, the blocks with slashes represent PDCCH, the blocks with white paint represent PDSCH, and the blocks with vertical lines represent PUCCH. The arrow from each PDSCH toward any one of the PUCCHs indicates that the initial transmission of the HARQ-ACK bits corresponding to the transport block included in the PDSCH corresponding to the starting point of the arrow is implemented in the PUCCH corresponding to the end point of the arrow. Here, the solid arrow indicates that the transmission of the PUCCH is triggered by the DCI format used for scheduling the PDSCH (timing K1 is a numerical value), and the dotted arrow indicates that the transmission of the PUCCH is not triggered by the DCI format used for scheduling the PDSCH (timing K1 is a non-numerical value). Fig. 9 The absence of an arrow from the PDSCH toward the PUCCH does not necessarily mean that the transmission (initial transmission, etc.) of the HARQ-ACK bits corresponding to the transport block included in the PDSCH is not triggered.

[0281] exist Fig. 9 and Fig.10 , it is assumed that the NR-U HARQ-ACK setting is given for terminal device 1.

[0282] exist Fig. 9 In the above, the DCI format for scheduling PDSCH911 is included in PDCCH901, the DCI format for scheduling PDSCH912 is included in PDCCH902, the DCI format for scheduling PDSCH913 is included in PDCCH903, the DCI format for scheduling PDSCH914 is included in PDCCH904, and the DCI format for scheduling PDSCH915 is included in PDCCH905.

[0283] exist Fig. 9, it is assumed that all PDSCHs are associated with PDSCH group g. The terminal device 1 may also send HARQ-ACK information 913 including HARQ-ACK bits corresponding to the transport blocks included in PDSCH915 and PDSCH914 via PUCCH921 in time slot n. The terminal device 1 may detect PDCCH901 and maintain the received NFI. When the terminal device 1 detects PDCCH902, the received NFI is indicated by the DCI format included in PDCCH902. The terminal device 1 may determine that the NFI bit is flipped by comparing the received NFI (value is 1) with the saved NFI (value is 0). It may be that after the judgment, the terminal device 1 saves the received NFI as the saved NFI. When the terminal device 1 detects PDCCH1103, the received NFI is indicated by the DCI format included in PDCCH903. The terminal device 1 may determine that the NFI bit is flipped by comparing the received NFI (value is 0) with the saved NFI (value is 1). It may be that after the judgment, the terminal device 1 saves the received NFI as a saved NFI. When the terminal device 1 detects PDCCH904, the received NFI is indicated by the DCI format included in PDCCH904. The terminal device 1 can judge that the NFI bit is flipped by comparing the received NFI (value is 1) with the saved NFI (value is 0). It may be that after the judgment, the terminal device 1 saves the received NFI as a saved NFI. When the terminal device 1 detects PDCCH905, the received NFI is indicated by the DCI format included in PDCCH905. The terminal device 1 can judge that the NFI bit is not flipped by comparing the received NFI (value is 1) with the saved NFI (value is 1). It may be that after the judgment, the terminal device 1 saves the received NFI as a saved NFI. The event that the NFI bit is flipped at the time point when PDCCH904 is detected is the last NFI bit flip event before sending PUCCH921. For the generation of HARQ-ACK information 931, the terminal device 1 may include the monitoring opportunities of the PDCCH corresponding to the DCI format from the last NFI bit flip event to the detection of the last DCI format in the set of monitoring opportunities for the PDCCH for time slot n. For example, the terminal device 1 may include the monitoring opportunities of the PDCCH corresponding to PDCCH904 and PDCCH905 in the set of monitoring opportunities for the PDCCH for time slot n. The NFI bit flip event is an event judged as an NFI bit flipped. The NFI bit flip event is triggered by the NFI bit included in the DCI format. When the NFI bit (received NFI) included in the DCI format is flipped compared to the saved NFI, the NFI bit flip event is triggered.

[0284] That is, when the terminal device 1 gives the NR-U HARQ-ACK setting, for the PDSCH group g associated with the scheduled PDSCH, the set of monitoring opportunities for the PDCCH for time slot n is determined based on at least determining (specifying, distinguishing, identifying, judging) the last NFI bit flip event. For example, the terminal device 1 may include the monitoring opportunity of the PDCCH after the timing of the last NFI bit flip event in the set of monitoring opportunities for the PDCCH for time slot n for the PDSCH group g. For example, the terminal device 1 may also include the monitoring opportunity of the PDCCH at the timing of the last NFI bit flip event in the set of monitoring opportunities for the PDCCH for time slot n for the PDSCH group g. For example, the terminal device 1 may also include the monitoring opportunity of the PDCCH before the timing of the last NFI bit flip event in the set of monitoring opportunities for the PDCCH for time slot n for the PDSCH group g.

[0285] In addition, for example, the terminal device 1 may also include, for PDSCH group g, a monitoring opportunity for the PDCCH after the monitoring opportunity for the PDCCH in the DCI format related to the last NFI bit flip event is detected, in the set of monitoring opportunities for the PDCCH for time slot n. For example, the terminal device 1 may also include, for PDSCH group g, a monitoring opportunity for the PDCCH in the DCI format related to the last NFI bit flip event is detected, in the set of monitoring opportunities for the PDCCH for time slot n. For example, the terminal device 1 may also include, for PDSCH group g, a monitoring opportunity for the PDCCH before the monitoring opportunity for the PDCCH in the DCI format related to the last NFI bit flip event is detected, in the set of monitoring opportunities for the PDCCH for time slot n. Here, the DCI format related to the last NFI bit flip event is a DCI format that triggers the occurrence of the last NFI bit flip event.

[0286] When the terminal device 1 gives the NR-U HARQ-ACK setting, the HARQ-ACK reporting status can be saved (stored) for the reception of PDSCH. The initial value of the HARQ-ACK reporting status can be pre-set to no compliance (N / A), null, or undefined. After receiving the PDSCH, the terminal device 1 can set the HARQ-ACK reporting status corresponding to the reception of the PDSCH to unreported. When the terminal device 1 triggers the transmission of the HARQ-ACK bit corresponding to the reception of the PDSCH in a certain uplink physical channel, the HARQ-ACK reporting status is set to reported. It can be that the terminal device 1 receives a PDSCH with the HARQ-ACK reporting status as reported, and when it detects that the NFI bit corresponding to the PDSCH group associated with the PDSCH is flipped compared to the NFI bit received first, the HARQ-ACK reporting status is deleted (or set to the initial value). The terminal device 1 receives a PDSCH whose HARQ-ACK reporting status is not reported. When it is detected that the NFI bit corresponding to the PDSCH group associated with the PDSCH is flipped compared to the NFI bit received first, the HARQ-ACK reporting status may not be deleted (or set to the initial value). That is, the terminal device 1 may also keep the HARQ-ACK reporting status as not reported. It can be that the terminal device 1 includes the monitoring opportunity of the PDCCH corresponding to the DCI format that satisfies part or all of conditions A1, A2 and B1 in the set of monitoring opportunities for the PDCCH for time slot n for the PDSCH group g associated with the scheduled PDSCH. The base station device 3 can expect the monitoring opportunity of the PDCCH corresponding to the PDSCH group g (in the terminal device 1, the HARQ-ACK reporting status is the initial value) for which the HARQ-ACK information sent is triggered for the PDSCH group g corresponding to the NFI corresponding to the PDSCH group g. The set of PDCCH monitoring opportunities in the terminal device 1 is determined based on at least the flip state of the NFI bit indicated to the base station device 3, thereby avoiding ambiguity in the identification of the reception and transmission state of the HARQ-ACK information between the terminal device 1 and the base station device 3, thereby enabling efficient reception and transmission of the HARQ-ACK information.

[0287] Condition B1: The HARQ-ACK reporting status corresponding to the reception of PDSCH scheduled by the DCI format is not reported or reported

[0288] It may be that the terminal device 1 includes, for the PDSCH group g associated with the scheduled PDSCH, at least the monitoring opportunity of the PDCCH corresponding to the DCI format that does not satisfy at least any one of the conditions A1, A2 or B1 in the set of monitoring opportunities for the PDCCH for time slot n.

[0289] exist Fig. 9In the embodiment, the terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH911 to unreported when PDCCH901 is detected. The terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH911 to reported after sending the HARQ-ACK information corresponding to PDSCH911. The terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH911 to an initial value when PDCCH902 is detected according to the NFI bit being flipped. The terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH912 to unreported when PDCCH902 is detected. The terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH912 to an initial value when PDCCH903 is detected according to the NFI bit being flipped. The terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH913 to unreported when PDCCH903 is detected. When detecting PDCCH904, terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH913 to an initial value according to the NFI bit being flipped. When detecting PDCCH904, terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH914 to unreported. When detecting PDCCH905, terminal device 1 may maintain the HARQ-ACK reporting state corresponding to PDSCH914 as reported according to the NFI bit being flipped. When detecting PDCCH905, terminal device 1 may set the HARQ-ACK reporting state corresponding to PDSCH915 to unreported. Before sending PUCCH921, the HARQ-ACK reporting state corresponding to PDSCH911, PDSCH912 and PDSCH913 is the initial value, the HARQ-ACK reporting state corresponding to PDSCH914 is reported, and the HARQ-ACK reporting state corresponding to PDSCH915 is unreported. The terminal device 1 may include the monitoring opportunity of the PDCCH corresponding to the PDSCH whose HARQ-ACK reporting status is unreported or reported in the set of monitoring opportunities for the PDCCH for time slot n in response to the generation of HARQ-ACK information 931. For example, the terminal device 1 may include the monitoring opportunity of the PDCCH corresponding to PDSCH914 and PDSCH915 in the set of monitoring opportunities for the PDCCH for time slot n. For example, the terminal device 1 may also not include the monitoring opportunity of the PDCCH corresponding to PDSCH911, PDSCH912, and PDSCH913 in the set of monitoring opportunities for the PDCCH for time slot n.

[0290] Fig.11This is a diagram showing an example related to the indication of count DAI and total DAI according to one aspect of the present embodiment.

[0291] The following describes the count DAI and the total DAI. The DAI field is a general term for the first DAI field and the second DAI field. The count DAI (Counter DAI) represents the cumulative number of PDCCHs detected in the monitoring opportunities of M PDCCHs (a set of monitoring opportunities for PDCCHs in time slot n), for a monitoring opportunity for a certain PDCCH in a certain service cell, up to the monitoring opportunity for the PDCCH in the service cell (or it may be a value at least associated with the cumulative number). The count DAI may also be referred to as C-DAI. The total DAI may represent the cumulative number of PDCCHs detected in the monitoring opportunities of M PDCCHs up to the monitoring opportunity for a certain PDCCH (or it may be a value at least associated with the cumulative number). The total DAI may be referred to as T-DAI (Total Downlink Assignment Index).

[0292] For example, it may be that, when one service cell is set and the upper-layer parameter pdsch-HARQ-ACK-Codebook is assigned a dynamic value, the number of bits of the second DAI field is 2, and the second DAI field represents the counting DAI. That is, the 2 bits of the second DAI field may be the counting DAI. It may be that, when more than one service cell is set and the upper-layer parameter pdsch-HARQ-ACK-Codebook is assigned a dynamic value, the number of bits of the second DAI field is 4, the MSB (the Most Important Bit) of the 2 bits in the second DAI field represents the counting DAI, and the LSB (the Least Significant Bit) of the 2 bits in the second DAI field represents the total DAI. That is, the MSB of the 2 bits of the second DAI field may be the counting DAI. That is, the LSB of the 2 bits of the second DAI field may be the total DAI.

[0293] A DCI field indicating the aggregate DAI corresponding to another group relative to PDSCH group g (e.g., PDSCH group (g+1) mod2) may be included in the DCI format for scheduling of PDSCH group g. A DCI field indicating the NFI corresponding to another group relative to PDSCH group g (e.g., PDSCH group (g+1) mod2) may be included in the DCI format for scheduling of PDSCH group g.

[0294] exist Fig.11In the case where the second DAI field is 6 bits and NFI-TotalDAI-Included-r16 is set to enabled, the 4-bit MSB in the second DAI field can represent the count DAI and total DAI corresponding to the PDSCH group (scheduled PDSCH group) scheduled by the DCI format including the second DAI field. The 2-bit LSB in the second DAI field can represent the total DAI corresponding to a PDSCH group (non-scheduled PDSCH group) different from the PDSCH group (scheduled PDSCH group) scheduled by the DCI format including the second DAI field. In the case where the second DAI field is 4 bits and NFI-TotalDAI-Included-r16 is set to enabled and one serving cell is set for the downlink, the 2-bit MSB in the second DAI field can represent the count DAI corresponding to the PDSCH group (scheduled PDSCH group) scheduled by the DCI format including the second DAI field. The 2-bit LSB in the second DAI field may represent a total DAI corresponding to a PDSCH group (non-scheduled PDSCH group) different from a PDSCH group (scheduled PDSCH group) scheduled by a DCI format including the second DAI field.

[0295] exist Fig.10 and Fig.11In the retransmission of the HARQ-ACK codebook for PDSCH1011 via PUCCH1022, the indication of the aggregate DAI through the second DAI field is described. Here, PDSCH1011 scheduled by PDCCH1001 is associated with PDSCH group g, and PDSCH1012 scheduled by PDCCH1002 and PDSCH1013 scheduled by PDCCH1003 are associated with PDSCH group h different from PDSCH group g. Below, the generation of HARQ-ACK information is described for PDSCH group g. Terminal device 1 receives PDCCH1001 in a DCI format including scheduling of PDSCH1011, and sends HARQ-ACK information 1031 including HARQ-ACK bits corresponding to PDSCH1011 via PUCCH1021. Here, assuming that PUCCH1021 is not detected in the base station device 3, the HARQ-ACK information 1031 is retransmitted via PUCCH1022. The second DAI field for PDSCH1011 associated with PDSCH group g may be included in the DCI format included in PDCCH1002 and / or PDCCH1003 associated with PDSCH group h. The count DAI used in the generation of the HARQ-ACK codebook for PDSCH1011 may be indicated by the DAI field included in PDCCH1001. The total DAI used in the generation of the HARQ-ACK codebook for PDSCH1011 may be indicated by the DAI field included in PDCCH1001. The total DAI used in the generation of the HARQ-ACK codebook for PDSCH1011 may be indicated by the second DAI field.

[0296] Fig.12 , Fig.13 as well as Fig.14 This is a diagram showing an example of a process of constructing a HARQ-ACK codebook (codebook for HARQ-ACK information) according to one aspect of the present embodiment. Fig.12 , Fig.13 as well as Fig.14 of <ax>Also called step AX. Fig.12 , Fig.13 as well as Fig.14 In , "A = B" can also mean setting A to B. Fig.12 , Fig.13 as well as Fig.14 In the example, "A=B" can also be used to input B to A. The terminal device 1 is based on Fig.12 , Fig.13 as well as Fig.14 The HARQ-ACK codebook is generated by the process described in . It can be that the terminal device 1, when the NR-U HARQ-ACK setting is given, generates a HARQ-ACK codebook for each PDSCH group based on Fig.12 , Fig.13 as well as Fig.14 The HARQ-ACK codebook is generated by the described process, and when multiple HARQ-ACK codebooks are generated, the multiple HARQ-ACK codebooks are concatenated.

[0297] The HARQ-ACK codebook may be given based on at least a part or all of steps A1 to A57.

[0298] The HARQ-ACK codebook corresponding to a certain PDSCH group may be given based on at least part or all of steps A to A57. The HARQ-ACK codebook corresponding to a certain PDSCH group may also be given based on one or more HARQ-ACK bits corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs included in the certain PDSCH group.

[0299] The HARQ-ACK codebook may also be given based on at least a set of monitoring opportunities of the PDCCH, a value of the UL DAI field, and / or a part or all of the DAI field.

[0300] The HARQ-ACK codebook may also be given based on at least a set of monitoring opportunities of the PDCCH, part or all of the UL DAI, the counting DAI, and / or the total DAI.

[0301] In step A1, m=0 is set. m may represent an index of a monitoring opportunity of a PDCCH including DCI format 1_0 or DCI format 1_1.

[0302] In step A2, j may be set to 0.

[0303] In step A3, V temp Set to 0.

[0304] In step A4, V temp2 Set to 0.

[0305] In step A5, it can be set to represent the empty set.

[0306] In step A6, N DL cells can be set to the number of serving cells. The number of serving cells can be the number of serving cells set in the terminal device 1.

[0307] In step A7, M can be set to the number of monitoring opportunities for PDCCH.

[0308] In step A8, evaluate the first evaluation formula m < M. When this first evaluation formula is true, step A9 can be executed. When this first evaluation formula is false, step A40 can be executed.

[0309] In step A9, the serving cell index c can be set to 0. The serving cell index can be given for each serving cell based at least on upper layer parameters.

[0310] In step A10, evaluate the second evaluation formula c < N DL cells . When this second evaluation formula is true, step A11 can be executed. When this second evaluation formula is false, step A37 can be executed.

[0311] In step A11, when the monitoring opportunity m of PDCCH in serving cell c is before the handover of the activated downlink BWP, step A12 can be executed. In step A11, when there is a handover of the activated uplink BWP in the PCell and the handover of the activated downlink BWP is not triggered by DCI format 1_1, step A12 can be executed. When neither of the above two conditions is satisfied, step A13 can be executed.

[0312] In step A12, c can be set to c + 1.

[0313] In step A13, step A14 can be executed.

[0314] In step A14, when condition C1 or condition C2 is satisfied, step A15 can be executed.

[0315] Condition C1: There is a PDSCH associated with the PDCCH at the monitoring opportunity m of PDCCH in serving cell c

[0316] Condition C2: There is a PDCCH indicating the release of the SPS PDSCH in serving cell c

[0317] In step A15, the third evaluation formula V is evaluated. DL C-DAI，c，m ≤V temp If the third evaluation formula is true, step A16 may be executed. If the third evaluation formula is false, step A17 may be executed.

[0318] V DL C-DAI，c，m It is the value of the counting DAI (Downlink Assignment Index) given at least based on the PDCCH detected in the monitoring occasion m of the PDCCH in the serving cell c. In determining the counting DAI, the index of the PDCCH detected in the M monitoring opportunities can first give the serving cell index c, and the second give the monitoring occasion m of the PDCCH. That is, the index of the PDCCH detected in the monitoring opportunities of the M PDCCHs can first be mapped in the order of the serving cell index c, and then can be mapped in the order of the monitoring occasion m of the PDCCH (serving cell indexfirst, PDCCH monitoring occasion second mapping). The counting DAI can be called C-DAI (Counter Downlink Assignment Index).

[0319] In step A16, j may be set to j+1.

[0320] Step A17 may be a step indicating completion of the action based on the third evaluation formula in step A15.

[0321] In step A18, V temp Set to V DL C-DAI，c，m .

[0322] In step A19, the fourth evaluation formula may be evaluated When the fourth evaluation formula is true, step A20 may be executed. When the fourth evaluation formula is false, step A21 may be executed.

[0323] V DL T-DAI，m It can be a value of the total DAI given based on at least the PDCCH detected in the PDCCH monitoring opportunity m in the serving cell c. The total DAI can represent the cumulative number of PDCCHs detected in the M PDCCH monitoring opportunities up to the PDCCH monitoring opportunity m (or it can also be a value at least associated with the cumulative number). The total DAI can be called T-DAI (Total Downlink Assignment Index).

[0324] The HARQ-ACK codebook is multiplexed with at least the PUSCH scheduled based on DCI format 0_1, and when m=M-1, at least V DL T-DAI，m Replace with V UL DAI .

[0325] In step A20, V temp2 Set to V DL C-DAI，c，m .

[0326] In step A21, step A23 may be performed.

[0327] In step A22, V temp2 Set to V DL T-DAI，m .

[0328] Step A23 may be a step indicating completion of the action based on the fourth evaluation formula in step A19.

[0329] In step A24, when 1) harq-ACK-SpatialBundlingPUCCH is not provided, and 2) the monitoring opportunity m of the PDCCH is a monitoring opportunity of the PDCCH including the DCI format 1_0 or the DCI format 1_1, and 3) maxNrofCodeWordsScheduledByDCI is set for reception of two transport blocks in at least one BWP in at least one serving cell, step A25 may be performed. maxNrofCodeWordsScheduledByDCI may be information indicating whether transmission of two transport blocks in the PDSCH is supported.

[0330] In step A25, o ACK a (8j+2(V DL C-DAI，c，m -1)) is set to the value of the HARQ-ACK bit corresponding to the first transport block of the serving cell c. The value of the HARQ-ACK bit of 1 may indicate ACK. The value of the HARQ-ACK bit of 0 may indicate NACK. The first transport block of the serving cell c may be the first transport block included in the PDSCH scheduled by the DCI format included in the PDCCH detected in the monitoring opportunity m of the PDCCH in the serving cell c. ACK a (X) is o ～ACK X .

[0331] In step A26, o ACK a (8j+2(V DL C-DAI，c，m -1)+1) is set to the value of the HARQ-ACK bit corresponding to the second transport block of the serving cell c. The second transport block of the serving cell c may be the second transport block included in the PDSCH scheduled by the DCI format included in the PDCCH detected in the monitoring opportunity m of the PDCCH in the serving cell c.

[0332] The PDSCH includes the first transport block, and the PDSCH does not include the second transport block may be that the PDSCH includes one transport block.

[0333] In step A27, V s Set to V s ∪{8j+2(V DL C-DAI，c，m -1), 8j+2(V DL C-DAI，c，m -1)+1}. Y∪Z may represent the union of set Y and set Z. {*} may be a set constructed to include *.

[0334] In step A28, step A29 can be performed when 1) harq-ACK-SpatialBundlingPUCCH is provided, 2) the monitoring opportunity m of PDCCH is a monitoring opportunity of PDCCH including DCI format 1_1, and 3) maxNrofCodeWordsScheduledByDCI is set for the reception of two transport blocks in at least one BWP in at least one serving cell.

[0335] In step A29, o ACK a (4j+V DL C-DAI，c，m -1) is set to a value given by a binary AND operation of a first HARQ-ACK bit corresponding to a first transport block of serving cell c and a second HARQ-ACK bit corresponding to a second transport block of serving cell c.

[0336] In step A30, V s Set to V s ∪{4j+V DL C-DAI，c，m -1}.

[0337] In step A31, when the conditions of step A24 and step A28 are satisfied, step A32 may be executed.

[0338] In step A32, o ACK a (4j+V DL C-DAI，c，m -1) is set to the value of the first HARQ-ACK bit corresponding to the first transport block of the serving cell c. In step A32, o ACK a (4j+V DL C-DAI，c，m -1) is set to the value of the HARQ-ACK bit of serving cell c.

[0339] In step A33, V s Set to V s ∪{4j+V DL C-DAI，c，m -1}.

[0340] Step A34 may be a step indicating completion of the action of step A24.

[0341] Step A35 may be a step indicating completion of the action of step A14.

[0342] In step A36, c may be set to c+1.

[0343] Step A37 may be a step indicating completion of the action of step A11.

[0344] In step A38, step A10 may be performed.

[0345] In step A39, m may be set to m+1.

[0346] In step A40, step A8 may be performed.

[0347] In step A41, the fifth evaluation formula V may be executed. temp2 <V temp When the fifth evaluation formula is true, step A42 may be executed. When the fifth evaluation formula is false, step A43 may be executed.

[0348] In step A42, j may be set to j+1.

[0349] Step A43 may be a step indicating completion of step A41.

[0350] In step A44, if 1) harq-ACK-SpatialBundlingPUCCH is not provided, and 2) at least one BWP in at least one serving cell sets maxNrofCodeWordsScheduledByDCI, step A45 may be performed. If neither of the above two conditions is met, step A46 may be performed.

[0351] In step A45, O ACK Set to 2(4j+V temp2 ).

[0352] In step A46, step A47 may be performed.

[0353] In step A47, O ACK Set to 4j+V temp2 .

[0354] Step A48 may be a step indicating completion of the action of step A44.

[0355] In step A49, for the N ∈{0, 1, ..., O ACK -1}￥V s i N , you can ACK a (i N ) is set to the value of NACK. V￥W may represent a set obtained by subtracting the elements included in the set W from the set V. V￥W may also be the difference set of V and W.

[0356] In step A50, c may be set to 0.

[0357] In step A51, the seventh evaluation formula c is evaluated. <N DL cells When the seventh evaluation formula is true, step A52 may be executed. When the second evaluation formula is false, step A57 may be executed.

[0358] In step A52, when it is set to receive a PDSCH (SPS PDSCH) scheduled by a grant set in one or more time slots in the monitoring opportunities of the M PDCCHs and transmission of the SPS PDSCH is activated, step A53 may be executed.

[0359] In step A53, O ACK Set to O ACK +1. In step A53, O ACK Set to O ACK +N SPS . N SPS The number of SPS PDSCHs received in the monitoring opportunity 1001 of M PDCCHs may be set.

[0360] In step A54, o ACK (o ACK -1) is set to the value of the HARQ-ACK bit corresponding to the transport block included in the SPS PDSCH. In step A55, o ACK (o ACK -i SPS ) is set to the value of the HARQ-ACK bit corresponding to the transport block included in the SPS PDSCH. SPS Can satisfy i SPS ∈{0, 1, ..., N SPS -1} condition. In step A55, o ACK (o ACK -1) is set to a value given by the logical product of HARQ-ACK bits corresponding to transport blocks respectively included in one or more SPS PDSCHs received in the monitoring opportunity of M PDCCHs.

[0361] Step A55 may be a step indicating completion of the action of step A52.

[0362] In step A56, c may be set to c+1.

[0363] Step A57 may be a step indicating completion of the action of step A51.

[0364] The first to seventh evaluation formulas are also referred to as evaluation formulas. If an evaluation formula is true, it means that the evaluation formula is satisfied. If the evaluation formula is false, it means that the evaluation formula is not true. If the evaluation formula is false, it means that the evaluation formula is not satisfied.

[0365] O ACK is the size of the HARQ-ACK codebook (e.g., the number of bits included in the HARQ-ACK codebook). ACK It may correspond to each PDSCH group. ACK It is the number of bits of UCI corresponding to the HARQ-ACK information multiplexed in PUCCH or PUSCH. ACK Can be O ACK Given.

[0366] Vtemp can be defined as the size of the HARQ-ACK codebook. ACK The remainder obtained by dividing by a specified number (for example, 4). That is, it can be V temp =mod(O ACK , 4). V temp It can also be defined as the size of the HARQ-ACK codebook O ACK The remainder obtained by dividing the value obtained by subtracting the number of HARQ-ACK bits corresponding to the SPSPDSCH from the value obtained by dividing the value by the specified number. j can be defined as the size of the HARQ-ACK codebook O ACK The quotient obtained by dividing by a specified number (e.g., 4). That is, it can be V temp =floor(O ACK , 4). V temp It can also be defined as the size of the HARQ-ACK codebook O ACK The quotient obtained by subtracting the number of HARQ-ACK bits corresponding to the SPS PDSCH from the value obtained by dividing the value by the prescribed number.

[0367] A PUCCH transmission occasion may be a transmission opportunity for attempting to transmit a PUCCH for reporting HARQ-ACK information for a PDSCH. A PUCCH transmission occasion may also be a transmission opportunity for attempting to transmit a PUCCH for the terminal device 1 to report HARQ-ACK information for a PDSCH. The PUCCH transmission occasion of the PDSCH may be indicated based at least on the timing K1 indicated by the DCI format for scheduling the PDSCH. The terminal device 1 may transmit the PUCCH according to the result of the LBT in the PUCCH transmission occasion. The terminal device 1 may also transmit the PUCCH when it is judged to be idle as a result of the LBT in the PUCCH transmission occasion. The terminal device 1 may also not transmit the PUCCH according to the result of the LBT in the PUCCH transmission occasion. The terminal device 1 may also not transmit the PUCCH when it is judged to be busy as a result of the LBT in the PUCCH transmission occasion.

[0368] A PUCCH transmission opportunity may correspond to one PUCCH resource. The one PUCCH resource may be a PUCCH resource indicated by a DCI format for scheduling a PDSCH. Here, the time slot for configuring the PUCCH transmission opportunity may be indicated based at least on the timing K1 indicated by the DCI format. In the event that the one PUCCH resource collides with the PUSCH in the time domain, the HARQ-ACK corresponding to the PDSCH is transmitted through the PUSCH. Even in the event that the one PUCCH resource collides with the PUSCH in the time domain, the PUCCH transmission opportunity corresponding to the one PUCCH resource may be valid.

[0369] g may be the value of the PGI field included in the DCI format. The terminal device 1 may set g to 0 when the PGI field is not included in the DCI format for scheduling the PDSCH. The PDSCH group (g+1) mod2 may also be referred to as another group (non-scheduled PDSCH group) relative to the PDSCH group g. The PDSCH group g may also be referred to as another group (non-scheduled PDSCH group) relative to the PDSCH group (g+1) mod2. i(g) may be a PUCCH transmission opportunity for multiplexing (reporting, transmitting) HARQ-ACK information. h(g) may be the value of the first NFI field included in the DCI format indicating g as PGI. The first NFI field may correspond to the PDSCH group g. h (g+1)mod2 (g) may be indicated by a second NFI field included in the DCI format indicating g as PGI. (g+1)mod2 (g) may also be a value of a second NFI field included in the DCI format indicating g as PGI. The second NFI field may correspond to another group (e.g., PDSCH group (g+1) mod 2). Here, the MSB of the 2-bit NFI field may correspond to the first NFI field, and the LSB of the 1-bit may correspond to the second NFI field. The LSB of the 2-bit NFI field may correspond to the first NFI field, and the MSB of the 1-bit may correspond to the second NFI field. DAI (g+1)mod2 It may be indicated by a second DAI field included in the DCI format indicating g as PGI. DAI (g+1)mod2 It may also be the value of the 2-bit LSB of the second DAI field included in the DCI format indicating g as PGI. Here, the 2-bit LSB may also be referred to as the aggregate DAI field corresponding to the PDSCH group (g+1) mod2. q may be the value of the NRPG field. For example, q may be the value of the NRPG field included in the DCI format indicating g as PGI.

[0370] Fig.15 This is a diagram showing an example of generating HARQ-ACK information.

[0371] Fig.16 This is a diagram showing an example of generating HARQ-ACK information.

[0372] exist Fig.15 and Fig.16 In the figure, the blocks with slashes represent PDCCH, the blocks with white paint represent PDSCH, and the blocks with vertical lines represent PUCCH or PUCCH transmission opportunities. The arrow from each PDSCH toward any one of the PUCCH or PUCCH transmission opportunities indicates that the initial transmission of the HARQ-ACK bits corresponding to the transport block included in the PDSCH corresponding to the starting point of the arrow is implemented in the PUCCH or PUCCH transmission opportunity corresponding to the end point of the arrow. Here, the solid arrow indicates that the transmission of the PUCCH or the PUCCH transmission in the PUCCH transmission opportunity is triggered by the DCI format used for scheduling the PDSCH (timing K1 is a numerical value). In the figure, the blocks with slashes represent PDCCH, PUCCH or PUCCH transmission opportunities, and PUCCH transmission opportunities. Fig.15 , it is assumed that the NR-U HARQ-ACK setting is given for terminal device 1.

[0373] like Fig.15 and Fig.16 As shown, the PUCCH transmission opportunity can be defined as the transmission opportunity of the PUCCH set to the time slot indicated by the PDSCH-to-HARQ feedback timing indicator field included in one or more DCI formats detected in the set of monitoring opportunities of the PDCCH corresponding to the PUCCH transmission opportunity. That is, the PUCCH transmission opportunity in time slot n can be given by one or more DCI formats detected in the set of monitoring opportunities of the PDCCH for n.

[0374] exist Fig.15 In the embodiment, the time slot for configuring PUCCH 1521 may be indicated by the PDSCH-to-HARQ feedback timing indicator field included in each of PDCCH 1501 and PDCCH 1502. In addition, the time slot for configuring PUCCH 1522 may also be indicated by the PDSCH-to-HARQ feedback timing indicator field included in each of PDCCH 1503 to PDCCH 1505. The time slot for configuring PUCCH 1522 may also be indicated by the PDSCH-to-HARQ feedback timing indicator field included in PDCCH 1505.

[0375] exist Fig.15 It is assumed that PDSCH1511 to PDSCH1514 are associated with PDSCH group (g+1) mod2 (that is, the same PDSCH group). It is assumed that PDSCH1515 is associated with PDSCH group g. The DCI format included in PDCCH1501 for scheduling PDSCH1511 indicates 0 as the NFI bit corresponding to PDSCH group (g+1) mod2, 1 as the counting DAI, and 1 as the total DAI. The DCI format included in PDCCH1502 for scheduling PDSCH1512 indicates 0 as the NFI bit corresponding to PDSCH group (g+1) mod2, 2 as the counting DAI, and 2 as the total DAI. Terminal device 1 reports HARQ-ACK information corresponding to PDSCH1511 and PDSCH1512 via PUCCH1521. Here, it is assumed that PUCCH1521 is not correctly detected in base station device 3. The DCI format included in PDCCH1503 for scheduling of PDSCH1513 indicates 0 as the NFI bit corresponding to PDSCH group (g+1) mod2, indicates 3 as the counting DAI, and indicates 3 as the total DAI. That is, the NFI bit corresponding to PDSCH group (g+1) mod2 is not flipped. The DCI format included in PDCCH1504 for scheduling of PDSCH1514 indicates 0 as the NFI bit corresponding to PDSCH group (g+1) mod2, indicates 4 as the counting DAI, and indicates 4 as the total DAI. The DCI format included in PDCCH1505 for scheduling of PDSCH1515 indicates 0 as the NFI bit corresponding to PDSCH group g, indicates 1 as the counting DAI, and indicates 1 as the total DAI. The DCI format included in PDCCH1505 indicates 0 as the NFI bit corresponding to another group (e.g., PDSCH group (g+1) mod2) (e.g., h (g+1)mod2 (g)), indicating 2 as the total DAI (e.g. V) corresponding to another group (e.g. PDSCH group (g+1) mod 2) DAI (g+1)mod2 ). Terminal device 1 can generate first HARQ-ACK information (first HARQ-ACK information) for PDSCH group g (for example, PDSCH1515). Terminal device 1 can also generate second HARQ-ACK information (second HARQ-ACK information) for PDSCH group (g+1) mod2 (for example, from PDSCH1511 to PDSCH1514). Terminal device 1 can report HARQ-ACK information including first HARQ-ACK information and / or second HARQ-ACK information via PDCCH1522.

[0376] exist Fig.15 In the example, PUCCH1522 may be i(g). h( g+1)mod2 (g) can be indicated by PDCCH 1515 and is the NFI bit corresponding to PDSCH group (g+1) mod 2. (g+1)mod2 (g) may be indicated by the second NFI field of the DCI format included in PDCCH1515. h((g+1)mod2) may be an NFI bit corresponding to PDSCH group (g+1)mod2. h((g+1)mod2) may be indicated by the last detected PDCCH from PDCCH1501 to PDCCH1504. For example, h(g+1)mod2 may be indicated by the first NFI field of the DCI format included in PDCCH1504. The terminal device 1 may indicate h (g+1)mod2 (g) is empty (no detection indicates h (g+1)mod2 (g) DCI format) or h (g+1)mod2 When (g) is equal to h((g+1)mod2), by Fig.12 , Fig.13 as well as Fig.14 The second HARQ-ACK information of the PUCCH transmission opportunity is generated by the process represented by the present invention. Here, the second HARQ-ACK information may correspond to the detection of a DCI format indicating (g+1) mod2 as PGI. Here, at least one of the DCI formats may indicate (g+1) mod2 as PGI. Here, in the case where Fig.12 , Fig.13 as well as Fig.14 In the process of indicating, in the set of monitoring opportunities of the PDCCH, after the terminal device 1 detects the first NFI bit different from h((g+1)mod2), the first monitoring opportunity of the PDCCH (m=0) may be the monitoring opportunity of the PDCCH corresponding to the detection of the DCI format indicating h((g+1)mod2) as the first NFI bit. DAI (g+1)mod2 Not empty (detected to indicate V DAI (g +1)mod2 In the case of DCI format) by Fig.12 , Fig.13 as well as Fig.14 In the process of representation, after the cycle of c and m is completed, V temp2 Set to V DAI (g+1)mod2 For example, the terminal device 1 may report HARQ-ACK information including 1-bit first HARQ-ACK information and / or 4-bit second HARQ-ACK information via i(g) (eg, PDCCH 1522 ).

[0377] exist Fig.16 In the embodiment, the time slot in which PUCCH 1621 is configured may be indicated by the PDSCH-to-HARQ feedback timing indicator field included in each of PDCCH 1601 and PDCCH 1602. In addition, the time slot in which PUCCH 1622 is configured may also be indicated by the PDSCH-to-HARQ feedback timing indicator field included in each of PDCCH 1603 to PDCCH 1605. The time slot in which PUCCH 1622 is configured may also be indicated by the PDSCH-to-HARQ feedback timing indicator field included in PDCCH 1605.

[0378] exist Fig.16 It is assumed that PDSCH1611 to PDSCH1614 are associated with PDSCH group (g+1) mod2 (that is, the same PDSCH group). It is assumed that PDSCH1615 is associated with PDSCH group g. The DCI format included in PDCCH1601 for scheduling PDSCH1611 indicates 0 as the NFI bit corresponding to PDSCH group (g+1) mod2, 1 as the counting DAI, and 1 as the total DAI. The DCI format included in PDCCH1602 for scheduling PDSCH1612 indicates 0 as the NFI bit corresponding to PDSCH group (g+1) mod2, 2 as the counting DAI, and 2 as the total DAI. Terminal device 1 reports HARQ-ACK information corresponding to PDSCH1611 and PDSCH1612 via PUCCH1621. Here, it is assumed that PUCCH1621 is correctly detected in base station device 3. The DCI format included in the PDCCH1603 for scheduling of PDSCH1613 indicates 1 as the NFI bit corresponding to the PDSCH group (g+1) mod2, indicates 1 as the counting DAI, and indicates 1 as the total DAI. That is, the NFI bit corresponding to the PDSCH group (g+1) mod2 is flipped. The DCI format included in the PDCCH1604 for scheduling of PDSCH1614 indicates 1 as the NFI bit corresponding to the PDSCH group (g+1) mod2, indicates 2 as the counting DAI, and indicates 2 as the total DAI. The DCI format included in the PDCCH1605 for scheduling of PDSCH1615 indicates 0 as the NFI bit corresponding to the PDSCH group g, indicates 1 as the counting DAI, and indicates 1 as the total DAI. The DCI format included in the PDCCH1605 indicates 1 as the NFI bit corresponding to another group (for example, PDSCH group (g+1) mod2) (for example, h (g+1)mod2 (g)), indicating 4 as the total DAI (e.g. V) corresponding to another group (e.g. PDSCH group (g+1) mod 2) DAI (g+1)mod2 ). Terminal device 1 can generate first HARQ-ACK information (first HARQ-ACK information) for PDSCH group g (for example, PDSCH1615). Here, it is assumed that terminal device 1 detects PDCCH1605. Terminal device 1 can also generate second HARQ-ACK information (second HARQ-ACK information) for PDSCH group (g+1) mod2 (for example, from PDSCH1611 to PDSCH1614). Terminal device 1 can report HARQ-ACK information including first HARQ-ACK information and / or second HARQ-ACK information via PDCCH1622.

[0379] exist Fig.16 In the example, PUCCH1622 may be i(g). h( g+1)mod2 (g) may be indicated by PDCCH 1615 and is the second NFI bit corresponding to PDSCH group (g+1) mod2. h((g+1) mod2) may be the first NFI bit corresponding to PDSCH group (g+1) mod2. h((g+1) mod2) may be indicated by the last detected PDCCH from PDCCH 1601 to PDCCH 1604. For example, assuming that PDCCH 1603 and PDCCH 1604 are not detected, h((g+1) mod2) may be indicated by PDCCH 1602.

[0380] exist Fig.16 In the example, the terminal device 1 can (g+1)mod2 (g) Not empty (detected to indicate h (g+1)mod2 (g) DCI format) and h (g+1)mod2 When (g) is different from h((g+1)mod2), at least based on V DAI (g+1)mod2 To generate the second HARQ-ACK information. For example, the terminal device 1 may generate V DAI (g+1)mod2 The NACK of the bit is used as the second HARQ-ACK information. That is, the second HARQ-ACK information can be composed of V DAI (g+1)mod2 For example, the terminal device 1 may generate a 1-bit NACK as the second HARQ-ACK information. (g+1)mod2 (g) is empty (no detection indicates h (g+1)mod2 (g) DCI format) or h (g+1)mod2 When (g) is equal to h((g+1)mod2), the set of monitoring opportunities of the PDCCH corresponding to the PDSCH group (g+1)mod2. The base station device 3 can expect V DAI (g+1)mod2 The base station device 3 can expect the second HARQ-ACK information of 1 bit NACK. The HARQ-ACK bit can be appropriately generated by the above-mentioned second HARQ-ACK information generation method.

[0381] exist Fig.16 In the example, the terminal device 1 may be based at least on V DAI (g+1)mod2 , through Fig.12 , Fig.13 as well as Fig.14 For example, the terminal device 1 may generate the second HARQ-ACK information by the process represented by h (g+1)mod2 (g) Not empty (detected to indicate h (g +1)mod2 (g) DCI format) and h (g+1)mod2 When (g) is different from h((g+1)mod2), at least based on V DAI (g+1)mod2 , through Fig.12 , Fig.13 as well as Fig.14 The second HARQ-ACK information is generated by the process represented by temp2 Set to V DAI (g+1)mod2 For example, the terminal device 1 may assume an empty PDCCH monitoring occasion set. That is, the terminal device 1 may assume a PDCCH monitoring occasion set including 0 PDCCH monitoring opportunities. That is, the terminal device 1 may assume a PDCCH monitoring occasion set including no PDCCH monitoring opportunities. That is, the terminal device 1 may input an empty PDCCH monitoring occasion set into the PDCCH monitoring occasion set. Fig.12 , Fig.13 as well as Fig.14 The process represented by generates the second HARQ-ACK information. Fig.12 , Fig.13 as well as Fig.14 In the process of expressing, M can be set to 0. For example, in step A7, M can be set to 0. The base station device 3 can expect V DAI (g+1)mod2 The base station device 3 can expect the second HARQ-ACK information of 1 bit NACK. The HARQ-ACK bit can be appropriately generated by the above-mentioned second HARQ-ACK information generation method.

[0382] exist Fig.16 In the example, the terminal device 1 may be based at least on V DAI (g+1)mod2 , through Fig.12 , Fig.13 as well as Fig.14 The second HARQ-ACK information is generated as part of the process represented by h (g+1)mod2 (g) Not empty (detected to indicate h (g+1)mod2 (g) DCI format) and h (g+1)mod2 When (g) is different from h((g+1)mod2), at least based on V DAI (g +1)mod2 , in Fig.12 , Fig.13 as well as Fig.14 In the process of expressing, one or more variables are set to specified values ​​to generate the second HARQ-ACK information. For example, V temp2 Set to V DAI (g+1)mod2 , through Fig.12 , Fig.13 as well as Fig.14 The base station device 3 can expect V DAI (g+1)mod2 The base station device 3 can expect the second HARQ-ACK information of 1 bit NACK. The HARQ-ACK bit can be appropriately generated by the above-mentioned second HARQ-ACK information generation method.

[0383] A solution of the present invention can realize efficient communication. A solution of the present invention can realize efficient transmission and reception of HARQ-ACK information. A solution of the present invention can realize efficient transmission and reception of HARQ-ACK codebook.

[0384] Hereinafter, various device aspects of one aspect of the present embodiment will be described.

[0385] (1) To achieve the above-mentioned object, the scheme of the present invention adopts the following scheme. That is, the first scheme of the present invention is a terminal device, comprising: a receiving unit, receiving a PDCCH for scheduling a PDSCH group g; and a transmitting unit, transmitting a PUCCH, wherein the first scheme includes: the PDCCH represents a total DAI corresponding to the PDSCH group (g+1) mod 2, and the value of the total DAI is V DAI ( g+1)mod2 , when the NFI corresponding to the PDSCH group (g+1) mod2 is flipped, regardless of the set of monitoring opportunities of the PDCCH corresponding to the PDSCH group (g+1) mod2, at least based on V DAI (g+1)mod2 , generate HARQ-ACK information, and when the NFI corresponding to the PDSCH group (g+1) mod2 is not flipped, generate the HARQ-ACK information based on at least a set of monitoring opportunities of the PDCCH corresponding to the PDSCH group (g+1) mod2, and report the HARQ-ACK information via the PUCCH.

[0386] (2) In the first embodiment of the present invention, when the NFI corresponding to the PDSCH group (g+1) mod 2 is flipped, V is generated. DAI (g+1)mod2 bits of HARQ-ACK information, the V DAI (g+1)mod2 Bit is set to NACK.

[0387] (3) In the first aspect of the present invention, when the NFI corresponding to the PDSCH group (g+1) mod 2 is inverted, HARQ-ACK information of 1-bit NACK is generated.

[0388] (4) A second solution of the present invention is a terminal device, comprising: a receiving unit, receiving a PDCCH for scheduling a PDSCH group g; and a transmitting unit, transmitting a PUCCH, wherein the second solution includes: the PDCCH represents a total DAI corresponding to the PDSCH group (g+1) mod 2, and the value of the total DAI is V DAI (g+1)mod2 , assuming that the set of monitoring opportunities of the PDCCH corresponding to the PDSCH group (g+1) mod2 is empty, or assuming that the PDCCH for scheduling of the PDSCH group (g+1) mod2 is not detected, in the process of generating HARQ-ACK information, the determination of the number of bits used for the HARQ-ACK information is V temp2 Set to V DAI (g+1)mod2 , generate the HARQ-ACK information, and report the HARQ-ACK information via the PUCCH.

[0389] (5) A third scheme of the present invention is a base station device, comprising: a transmitting unit, which transmits a PDCCH for scheduling a PDSCH group g; and a receiving unit, which receives a PUCCH, wherein the PDCCH indicates a total DAI corresponding to the PDSCH group (g+1) mod 2, and the value of the total DAI is V DAI ( g+1)mod2 , when the NFI corresponding to the PDSCH group (g+1) mod2 is flipped, regardless of the set of monitoring opportunities of the PDCCH corresponding to the PDSCH group (g+1) mod2, at least based on V DAI (g+1)mod2 , generate HARQ-ACK information, and when the NFI corresponding to the PDSCH group (g+1) mod2 is not flipped, the HARQ-ACK information is generated based on at least a set of monitoring opportunities of the PDCCH corresponding to the PDSCH group (g+1) mod2, and the HARQ-ACK information is reported via the PUCCH.

[0390] (2) In the third embodiment of the present invention, when the NFI corresponding to the PDSCH group (g+1) mod 2 is flipped, V DAI (g+1)mod2 bits of HARQ-ACK information are generated, the V DAI (g+1)mod2 bit is set to NACK.

[0391] (3) In the third aspect of the present invention, when the NFI corresponding to the PDSCH group (g+1) mod 2 is inverted, HARQ-ACK information of 1-bit NACK is generated.

[0392] (8) A fourth scheme of the present invention is a base station device comprising: a transmitting unit, which transmits a PDCCH for scheduling a PDSCH group g; and a receiving unit, which receives a PUCCH, wherein the second scheme includes: the PDCCH represents a total DAI corresponding to the PDSCH group (g+1) mod 2, and the value of the total DAI is V DAI (g+1)mod2 , it is assumed that the set of monitoring opportunities of the PDCCH corresponding to the PDSCH group (g+1) mod2 is empty, or it is assumed that the PDCCH scheduled for the PDSCH group (g+1) mod2 is not detected, in the process of generating HARQ-ACK information, V for determining the number of bits of the HARQ-ACK information temp2 is set to V DAI (g+1)mod2 , the HARQ-ACK information is generated, and the HARQ-ACK information is reported via the PUCCH.

[0393] According to the above-mentioned embodiment of one scheme of the present invention, the transmission and reception of HARQ-ACK information between the terminal device 1 and the base station device 3 can be appropriately realized.

[0394] The program operating in the base station device 3 and the terminal device 1 according to one embodiment of the present invention may be a program (a program that causes a computer to function) that controls a CPU (Central Processing Unit) and the like to realize the functions of the above-mentioned embodiment according to one embodiment of the present invention. Then, the information processed by these devices is temporarily stored in a RAM (Random Access Memory) when processing, and then stored in various ROMs such as a Flash ROM (Read Only Memory) and a HDD (Hard Disk Drive), and is read, modified, and written by the CPU as needed.

[0395] It should be noted that a part of the terminal device 1 and the base station device 3 of the above embodiment may also be implemented by a computer. In this case, a program for implementing the control function may be recorded in a computer readable recording medium, and the program recorded in the recording medium may be read into a computer system and executed.

[0396] It should be noted that the "computer system" mentioned here refers to a computer system built into the terminal device 1 or the base station device 3, and adopts a computer system including hardware such as an OS and peripheral devices. In addition, "computer-readable recording medium" refers to removable media such as floppy disks, magneto-optical disks, ROMs, CD-ROMs, and storage devices such as hard disks built into the computer system.

[0397] Furthermore, "computer-readable recording media" may include: media that dynamically store programs for a short period of time, such as communication lines when the programs are transmitted via networks such as the Internet or communication lines such as telephone lines; and media that store programs for a fixed period of time, such as volatile memories inside computer systems that serve as servers or clients in this case. In addition, the above-mentioned program may be a program for realizing a part of the above-mentioned functions, or a program that can realize the above-mentioned functions by combining with a program already recorded in a computer system.

[0398] The terminal device 1 may be composed of at least one processor and at least one memory including computer program instructions (computer program). The memory and computer program instructions (computer program) may be a configuration that uses the processor to cause the terminal device 1 to perform the actions and processes described in the above-mentioned embodiments. The base station device 3 may be composed of at least one processor and at least one memory including computer program instructions (computer program). The memory and computer program instructions (computer program) may be a configuration that uses the processor to cause the base station device 3 to perform the actions and processes described in the above-mentioned embodiments.

[0399] In addition, the base station device 3 in the above-mentioned embodiment can also be implemented as an aggregate (device group) composed of multiple devices. Each device constituting the device group can have a part or all of the functions or functional blocks of the base station device 3 in the above-mentioned embodiment. As a device group, it is sufficient to have all the functions or functional blocks of the base station device 3. In addition, the terminal device 1 in the above-mentioned embodiment can also communicate with the base station device as an aggregate.

[0400] In addition, the base station device 3 in the above-mentioned embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGenRAN, NR RAN). In addition, the base station device 3 in the above-mentioned embodiment may also have part or all of the functions of the upper node for eNodeB and / or gNB.

[0401] In addition, part or all of the terminal device 1 and the base station device 3 of the above-mentioned embodiment may be implemented as an LSI, which is typically an integrated circuit, or may be implemented as a chipset. Each functional block of the terminal device 1 and the base station device 3 may be independently chip-based, or may be partially or completely integrated and chip-based. In addition, the method of integrated circuitization is not limited to LSI, and may also be implemented using a dedicated circuit or a general-purpose processor. In addition, in the case where a technology for integrated circuitization that replaces LSI emerges with the advancement of semiconductor technology, an integrated circuit based on the technology may also be used.

[0402] In addition, in the above-mentioned embodiment, a terminal device is recorded as an example of a communication device, but the invention of the present application is not limited to this and can be applied to fixed or non-movable electronic devices installed indoors and outdoors, such as AV equipment, kitchen equipment, cleaning / washing equipment, air-conditioning equipment, office equipment, vending machines and other life equipment and other terminal devices or communication devices.

[0403] The embodiments of the present invention are described in detail with reference to the accompanying drawings, but the specific configuration is not limited to the present embodiment, and also includes design changes within the scope of the gist of the present invention. In addition, a scheme of the present invention can be variously changed within the scope shown in the technical scheme, and the 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 the elements that have the same effect as the elements recorded in the above-mentioned embodiments with each other.

[0404] Industrial Applicability

[0405] 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), a program, or the like.

[0406] Description of Reference Numerals

[0407] 1(1A, 1B, 1C) Terminal device

[0408] 3 Base station equipment

[0409] 10, 30 Wireless transceiver

[0410] 11, 31 Antenna

[0411] 12, 32 RF Department

[0412] 13, 33 Baseband

[0413] 14, 34 Upper processing unit

[0414] 15, 35 Media access control layer processing unit

[0415] 16, 36 Radio Resource Control Layer Processing Unit

[0416] 91, 92, 93, 94 Search area set

[0417] 301 Main Area

[0418] 302, 303 Auxiliary cells

[0419] 801, 802, 803, 804, 805, 806 Search zone set surveillance opportunities

[0420] 811, 812, 813, 814 DCI formats

[0421] 1101, 1102, 1103, 1104, 1105 PDCCH

[0422] 1111, 1112, 1113, 1114, 1115 PDSCH

[0423] 1121, 1122, 1123 PUCCH< / ax>

Claims

1. A terminal device, comprising: a receiving unit, in which a first physical downlink shared channel (PDSCH) group identifier is indicated by a first downlink control information (DCI) format, and a second PDSCH group identifier different from the first PDSCH group identifier is indicated by a second DCI format; and a transmitting unit, when the first DCI format is detected, transmitting HARQ-ACK information of the second PDSCH group identifier, The HARQ-ACK information is determined based on at least a parameter M for setting the number of monitoring opportunities of a physical downlink control channel PDCCH, A value of the first new feedback indicator NFI of the second PDSCH group identifier is indicated by a first NFI field in the second DCI format, A value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field different from the first NFI field in the first DCI format, When the value of the second NFI is not empty and the value of the second NFI is different from the value of the first NFI, the value of the parameter M is set to zero.

2. A base station device, comprising: a transmitting unit, indicating a first physical downlink shared channel PDSCH group identifier through a first downlink control information DCI format, and indicating a second PDSCH group identifier different from the first PDSCH group identifier through a second DCI format; and a receiving unit, receiving HARQ-ACK information of the second PDSCH group identifier when the first DCI format is transmitted, The HARQ-ACK information is determined based on at least a parameter M for setting the number of monitoring opportunities of a physical downlink control channel PDCCH, A value of the first new feedback indicator NFI of the second PDSCH group identifier is indicated by a first NFI field in the second DCI format, A value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field different from the first NFI field in the first DCI format, When the value of the second NFI is not empty and the value of the second NFI is different from the value of the first NFI, the value of the parameter M is set to zero.

3. A communication method of a terminal device, the communication method comprising the following steps: A step of indicating a first physical downlink shared channel (PDSCH) group identifier through a first downlink control information (DCI) format; A step of indicating a second PDSCH group identifier different from the first PDSCH group identifier through a second DCI format; and When the first DCI format is detected, a step of sending HARQ-ACK information of the second PDSCH group identifier, The HARQ-ACK information is determined based on at least a parameter M for setting the number of monitoring opportunities of a physical downlink control channel PDCCH, A value of the first new feedback indicator NFI of the second PDSCH group identifier is indicated by a first NFI field in the second DCI format, A value of a second NFI of the second PDSCH group identifier is indicated by a second NFI field different from the first NFI field in the first DCI format, When the value of the second NFI is not empty and the value of the second NFI is different from the value of the first NFI, the value of the parameter M is set to zero.

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