Terminal device, base station device, and communication method

Abstract

The terminal device includes: based on the value of the PGI field included in the DCI format of the scheduled PDSCH, indicating the PDSCH group to which the PDSCH belongs, when the RPGI field included in the DCI format is set to a first RPGI value, indicating that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs, and when the RPGI field included in the DCI format is set to a second RPGI value, indicating that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs and PDSCH groups other than the PDSCH group, and sending HARQ‑ACK information corresponding to the transport block of the PDSCH belonging to the PDSCH group included in the requested PDSCH group.

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. 2019-122820 filed in Japan on July 1, 2019, the contents of which are incorporated herein by reference. 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 reviewed 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] The present invention provides a terminal device that efficiently communicates, a communication method used for the terminal device, a base station device that efficiently communicates, and a communication method used for the base station device.

[0010] Technical Solution

[0011] (1) A first scheme of the present invention is a terminal device, comprising: a receiving unit, receiving a PDCCH and receiving a PDSCH scheduled by a DCI format included in the PDCCH; and a transmitting unit, transmitting HARQ-ACK information corresponding to a transport block of the PDSCH via a PUCCH or a PUSCH, wherein each of two PDSCH groups is a set of PDSCHs having the same PDSCH group identifier represented by a PDSCH group indicator (PGI: PDSCH Group Indicator) field included in a DCI format for scheduling the PDSCH, and indicating whether the PDSCH belongs to a first PDSCH group or a second PDSCH group based on a value set to the PGI field included in the DCI format, that is, indicating whether the PDSCH is associated with the first PDSCH group or the second PDSCH group, and when a requested PDSCH group indicator (RPGI: Requested PDSCH Group Indicator) field included in the DCI format is set to When the RPGI Indicator) field is set to the first RPGI value, it means that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs; when the RPGI field included in the DCI format is set to the second RPGI value, it means that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs and PDSCH groups other than the PDSCH group, and the sending unit sends, i.e. reports, the HARQ-ACK information corresponding to the transport block of the PDSCH belonging to the PDSCH group included in the requested PDSCH group.

[0012] (2) A second scheme of the present invention is a base station device, comprising: a transmitting unit, transmitting a PDCCH, and transmitting a PDSCH scheduled by a DCI format included in the PDCCH; and a receiving unit, receiving HARQ-ACK information corresponding to a transport block of the PDSCH via a PUCCH or a PUSCH, wherein each of two PDSCH groups is a set of PDSCHs having the same PDSCH group identifier indicated by a PGI field included in a DCI format for scheduling the PDSCH, and a PDSCH group identifier is received according to whether the PDSCH belongs to a first PDSCH group or a second PDSCH group, that is, according to whether the PDSCH belongs to a first PDSCH group or a second PDSCH group. The value of the PGI field included in the DCI format is set based on whether the PDSCH is associated with the first PDSCH group or the second PDSCH group. When the requested PDSCH group includes the PDSCH group to which the PDSCH belongs, the RPGI field included in the DCI format is set to the first RPGI value. When the requested PDSCH group includes the PDSCH group to which the PDSCH belongs and a PDSCH group other than the PDSCH group, the RPGI field included in the DCI format is set to the second RPGI value. The receiving unit receives HARQ-ACK information corresponding to the transport block of the PDSCH belonging to the PDSCH group included in the requested PDSCH group.

[0013] (3) A third scheme of the present invention is a communication method for a terminal device, comprising: receiving a PDCCH and receiving a PDSCH scheduled by a DCI format included in the PDCCH, sending HARQ-ACK information of a transport block of the PDSCH via a PUCCH or a PUSCH, wherein each of the two PDSCH groups is a set of PDSCHs having the same PDSCH group identifier represented by a PGI field included in a DCI format for scheduling the PDSCH, and indicating whether the PDSCH belongs to a first PDSCH group or a second PDSCH group based on a value set to the PGI field included in the DCI format, i.e., Depending on whether the PDSCH is associated with the first PDSCH group or the second PDSCH group, when the RPGI field included in the DCI format is set to the first RPGI value, it means that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs; when the RPGI field included in the DCI format is set to the second RPGI value, it means that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs and PDSCH groups other than the PDSCH group, and HARQ-ACK information corresponding to the transport block of the PDSCH belonging to the PDSCH group included in the requested PDSCH group is sent, i.e., reported.

[0014] (4) A fourth scheme of the present invention is a communication method for a base station device, comprising: sending a PDCCH and sending a PDSCH scheduled by a DCI format included in the PDCCH, receiving HARQ-ACK information corresponding to a transport block of the PDSCH via a PUCCH or a PUSCH, wherein each of two PDSCH groups is a set of PDSCHs having the same PDSCH group identifier indicated by a PGI field included in a DCI format for scheduling the PDSCH, and according to whether the PDSCH belongs to a first PDSCH group or a second PDSCH group, that is, according to whether the PDSCH belongs to a first PDSCH group or a second PDSCH group, The value of the PGI field included in the DCI format is set by associating the DCI format with the first PDSCH group or the second PDSCH group, and when the requested PDSCH group includes the PDSCH group to which the PDSCH belongs, the RPGI field included in the DCI format is set to the first RPGI value; when the requested PDSCH group includes the PDSCH group to which the PDSCH belongs and a PDSCH group other than the PDSCH group, the RPGI field included in the DCI format is set to the second RPGI value, and HARQ-ACK information corresponding to the transport block of the PDSCH belonging to the PDSCH group included in the requested PDSCH group is received.

[0015] Beneficial Effects

[0016] According to 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 a process of constructing a HARQ-ACK codebook according to one scheme of the present embodiment.

[0026] Fig.10 This is a diagram showing an example of a process of constructing a HARQ-ACK codebook according to one scheme of the present embodiment.

[0027] Fig.11 This is a diagram showing an example of a process of constructing a HARQ-ACK codebook according to one scheme of the present embodiment.

[0028] Fig.12 This is a diagram showing an example of reporting of HARQ-ACK information according to a scheme of the present embodiment.

[0029] Fig.13 This is an example of a toggle state of the NFI bit showing one aspect of the present embodiment.

[0030] Fig.14 This is an example of reporting HARQ-ACK information when the NFI bit corresponding to a certain PDSCH group is inverted according to one scheme of the present embodiment.

[0031] Fig.15 This is an example of reporting HARQ-ACK information when the NFI bit corresponding to a certain PDSCH group is not flipped according to a scheme of the present embodiment.

[0032] Fig.16 This is an example of a setting value of the RPGI field according to one aspect of the present embodiment (first RPGI value).

[0033] Fig.17 This is an example of a setting value of the RPGI field according to one aspect of the present embodiment (second RPGI value). DETAILED DESCRIPTION

[0034] Hereinafter, embodiments of the present invention will be described.

[0035] "A and / or B" may be a term including "A", "B", or "A and B".

[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 subframesubframe，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), N slot 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 through one antenna port can be estimated from the channel through which symbols are transmitted through 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 set 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，x It 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 scThe 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 frequency domain index k 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 k sc 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 domainsym , 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) Mapped to 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 resources for the PUSCH for initial transmission are requested by the terminal device 1. A positive SR can also indicate that a scheduling request is triggered by an upper layer. A positive SR can be sent when an upper layer is indicated to send a scheduling request. A 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 be sent when an upper layer is not indicated to send a scheduling request.

[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 (1 st downlink assignment index: first downlink assignment index)

[0115] 2I) Second UL DAI field (2 nd 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 (report trigger size) 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] The DCI format 1_0 is configured to include at least a part or all of 3A to 3K.

[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 PGI field (first PDSCH Group Indicator field)

[0131] 3J) First NFI field (first New Feedback Indicator field)

[0132] 3K) First RPGI field (first Requested PDSCH Group Indicator field)

[0133] 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 including the OFDM symbol at 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 including the OFDM symbol at the end of the PDSCH is time slot n, the index of the time slot including the OFDM symbol at the start of the PUCCH or the OFDM symbol at the start of the PUSCH may be n+K1, and the OFDM symbol at the start of the PUCCH or the OFDM symbol at the start of the PUSCH may include at least the HARQ-ACK information corresponding to the transport block included in the PDSCH.

[0134] Hereinafter, the PDSCH-to-HARQ feedback timing indicator field (PDSCH-to-HARQ_feedback timingindicator field) may also be referred to as a HARQ indication field.

[0135] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set.

[0136] The details of the first PGI field, the first NFI field, and the first RPGI field will be described later.

[0137] DCI format 1_1 is configured to include at least a part or all of 4A to 4M.

[0138] 4A) Identifier for DCI formats field

[0139] 4B) Frequency domain resource assignment field

[0140] 4C) Time domain resource assignment field

[0141] 4D) Frequency hopping flag field

[0142] 4E)MCS field (MCS field: Modulation and Coding Scheme field)

[0143] 4F) First CSI request field

[0144] 4G)PDSCH-to-HARQ feedback timing indicator field

[0145] 4H)PUCCH resource indicator field

[0146] 4J) BWP field

[0147] 4K) second PGI field (second PDSCH Group Indicator field)

[0148] 4L) Second NFI field (second New Feedback Indicator field)

[0149] 4M) Second RPGI field (second Requested PDSCH Group Indicator field)

[0150] The BWP field may be used to indicate a downlink BWP to which a PDSCH scheduled by DCI format 1_1 is mapped.

[0151] The second PGI field, the second NFI field, and the second RPGI field will be described later.

[0152] The DCI format 2_0 may be configured to include at least one or more slot format indicators (SFI: Slot Format Indicator).

[0153] 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.

[0154] 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.

[0155] The downlink grant is used to schedule at least one PDSCH in one serving cell.

[0156] The uplink grant is used to schedule at least one PUSCH in one serving cell.

[0157] 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.

[0158] 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.

[0159] 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).

[0160] 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.

[0161] 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.

[0162] The number of OFDM symbols constituting the control resource set may be given based on at least an upper layer parameter.

[0163] 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.

[0164] 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.

[0165] 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).

[0166] 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.

[0167] 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.

[0168] 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).

[0169] 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.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] Figure 4FIG. 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 .

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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).

[0182] 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.

[0183] 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.

[0184] Synchronization signal (SS)

[0185] DL DMRS (DownLink DeModulation Reference Signal)

[0186] CSI-RS (Channel State Information-Reference Signal)

[0187] DL PTRS (DownLink Phase Tracking Reference Signal)

[0188] 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).

[0189] The SS block (SS / PBCH block) is configured to include at least a part or all of the PSS, SSS, and PBCH.

[0190] The DL DMRS is associated with the transmission of the PBCH, PDCCH and / or PDSCH. The DL DMRS is multiplexed to 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.

[0191] 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.

[0192] 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.

[0193] The DL PTRS may be associated with a DL DMRS group including at least an antenna port for one or more DL DMRSs.

[0194] 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.

[0195] 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.

[0196] 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).

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] Hereinafter, a configuration example of the terminal device 1 according to one aspect of the present embodiment will be described.

[0202] 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.

[0203] 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.

[0204] The media access control layer processing unit 15 included in the upper layer processing unit 14 performs processing at the MAC layer.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] Hereinafter, a configuration example of the base station device 3 according to one aspect of the present embodiment will be described.

[0212] 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.

[0213] The upper layer processing unit 34 performs processing of the MAC layer, the PDCP layer, the RLC layer, and the RRC layer.

[0214] The media access control layer processing unit 35 included in the upper layer processing unit 34 performs processing at the MAC layer.

[0215] 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.

[0216] Since the function of the wireless transceiver 30 is the same as that of the wireless transceiver 10 , the description thereof will be omitted.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] 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)).

[0221] 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.

[0222] 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 7 In 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.

[0223] 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.

[0224] 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.

[0225] 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 8 In 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 802 , the inverted DCI format 811 is detected, in 804 , the DCI format 812 is detected, in 805 , the DCI format 813 is detected, and in 806 , the DCI format 814 is detected.

[0226] 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.

[0227] 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 no DCI format is 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.

[0228] 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.

[0229] Fig. 9 , Fig.10 as well as Fig.11 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. 9 , Fig.10 as well as Fig.11 of <ax>Also called step AX. Fig. 9 , Fig.10 as well as Fig.11 In , "A = B" can also mean setting A to B. Fig. 9 , Fig.10 as well as Fig.11 In the example, "A=B" can also be used to input B to A. The terminal device 1 is based on Fig. 9 , Fig.10 as well as Fig.11 The HARQ-ACK codebook is generated by the process described in .

[0230] The HARQ-ACK codebook may be given based on at least a part or all of steps A1 to A58.

[0231] The HARQ-ACK codebook corresponding to a certain PDSCH group may be given based on at least a part or all of steps A to A46. 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.

[0232] 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, a value of the count DAI field, and / or a portion or all of the DAI field.

[0233] 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.

[0234] In step A1, the serving cell index c is set to 0. The serving cell index may be given for each serving cell based on at least a parameter of an upper layer.

[0235] In step A2, m is set to 0. m may represent an index of a monitoring opportunity of a PDCCH including DCI format 1_0 or DCI format 1_1.

[0236] In step A3, j may be set to 0.

[0237] In step A4, V temp Set to 0.

[0238] In step A5, V temp2 Set to 0.

[0239] In step A6, it can be set as Represents the empty set.

[0240] In step A7, 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.

[0241] In step A8, M can be set to the number of monitoring opportunities for PDCCH.

[0242] In step A9, the first evaluation formula m < M is evaluated. When this first evaluation formula is true, step A10 can be executed. When this first evaluation formula is false, step A34 can be executed.

[0243] In step A10, c can be set to 0.

[0244] In step A11, the second evaluation formula c < N DL cells is evaluated. When this second evaluation formula is true, step A11 can be executed. When this second evaluation formula is false, step A33 can be executed.

[0245] In step A12, when the monitoring opportunity m of PDCCH in serving cell c is before the handover activation of the downlink BWP, step A13 can be executed. In step A12, 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 A13 can be executed. When neither of the above two conditions is satisfied, step A14 can be executed.

[0246] In step A13, c can be set to c + 1.

[0247] In step A14, step A15 can be executed.

[0248] In step A15, when there is a PDSCH associated with the PDCCH at the monitoring opportunity m of PDCCH in serving cell c or there is a PDCCH indicating the release of the SPS PDSCH in serving cell c, step A16 can be executed.

[0249] In step A16, the third evaluation formula V DL C-DAI，c，m ≤ V temp is evaluated. When this third evaluation formula is true, step A17 can be executed. When this third evaluation formula is false, step A18 can be executed.

[0250] V DL C-DAI，c，m It is the value of the counting DAI (Downlink Assignment Index) given based on at least the PDCCH detected in the monitoring opportunity m of the PDCCH in the serving cell c. The counting DAI represents the cumulative number of PDCCHs detected in the monitoring opportunities of M PDCCHs up to the monitoring opportunity m of the PDCCH in the serving cell c (or it may also be a value at least associated with the cumulative number). In determining the cumulative number, the index of the PDCCH detected in the M monitoring opportunities can first give the serving cell index c, and then give the monitoring opportunity m of the PDCCH. That is, the index of the PDCCH detected in the monitoring opportunities of 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 opportunity m of the PDCCH (serving cell index first, PDCCH monitoringoccasion second mapping). The counting DAI can be called C-DAI (Counter Downlink AssignmentIndex).

[0251] In step A17, j may be set to j+1.

[0252] Step A18 may be a step indicating completion of the action based on the third evaluation formula in step A12.

[0253] In step A19, V temp Set to V DL C-DAI，c，m .

[0254] In step A20, the fourth evaluation formula may be evaluated. When the fourth evaluation formula is true, step A21 may be executed. When the fourth evaluation formula is false, step A22 may be executed.

[0255] 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).

[0256] At least when the HARQ-ACK codebook is multiplexed to at least the PUSCH scheduled based on DCI format 0_1, and when m=M-1, V DL T-DAI，m Can be replaced by V UL DAI .

[0257] In step A21, V temp2 Set to V DL C-DAI，c，m .

[0258] In step A22, step A23 may be performed.

[0259] In step A23, V temp2 Set to V DL T-DAI，m .

[0260] Step A24 may be a step indicating completion of the action based on the fourth evaluation formula in step A20.

[0261] In step A25, 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 A26 may be performed. maxNrofCodeWordsScheduledByDCI may be information indicating whether transmission of two transport blocks in the PDSCH is supported.

[0262] In step A26, 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 can be 1 to indicate ACK. The value of the HARQ-ACK bit can be 0 to indicate NACK. The first transport block of the serving cell c can 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.

[0263] In step A27, 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.

[0264] 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.

[0265] In step A28, 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 *.

[0266] In step A29, step A30 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.

[0267] In step A30, 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.

[0268] In step A31, V s Set to V s ∪{4j+V DL C-DAI，c，m -1}.

[0269] In step A32, when the conditions of step A25 and step A29 are satisfied, step A33 may be executed.

[0270] In step A33, 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 A33, 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.

[0271] In step A34, V s Set to V s ∪{4j+V DL C-DAI，c，m -1}.

[0272] Step A35 may be a step indicating completion of the action of step A25.

[0273] Step A36 may be a step indicating completion of the action of step A15.

[0274] In step A37, c may be set to c+1.

[0275] Step A38 may be a step indicating completion of the action of step A12.

[0276] In step A39, step A11 may be performed.

[0277] In step A40, m may be set to m+1.

[0278] In step A41, step A10 may be performed.

[0279] In step A42, the fifth evaluation formula V may be executed. temp2 <V temp When the fifth evaluation formula is true, step A43 may be executed. When the fifth evaluation formula is false, step A44 may be executed.

[0280] In step A43, j may be set to j+1.

[0281] Step A44 may be a step indicating completion of step A42.

[0282] In step A45, if 1) harq-ACK-SpatialBundlingPUCCH is not provided, and 2) at least one BWP in at least one serving cell sets maxNrofCodeWordsScheduledByDCI, step A46 may be performed. If neither of the above two conditions is met, step A47 may be performed.

[0283] In step A46, O ACK Set to 2(4j+V temp2 ).

[0284] In step A47, step A48 may be performed.

[0285] In step A48, O ACK Set to 4j+V temp2 .

[0286] Step A49 may be a step indicating completion of the action of step A12.

[0287] In step A50, 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.

[0288] In step A51, c may be set to 0.

[0289] In step A52, the seventh evaluation formula c is evaluated. <N DL cells When the seventh evaluation formula is true, step A54 may be executed. When the second evaluation formula is false, step A58 may be executed.

[0290] In step A54, when it is set to receive a PDSCH (SPS PDSCH) scheduled by a grant set in one or more time slots among the monitoring opportunities of the M PDCCHs and transmission of the SPS PDSCH is activated, step A54 may be performed.

[0291] In step A54, O ACK Set to O ACK +1. In step A44, 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.

[0292] In step A55, o ACK a (o ACKa -1) is set to the value of the HARQ-ACK bit corresponding to the transport block included in the SPS PDSCH. In step A45, o ACK a (o ACK a -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 A45, o ACK a (o ACK a -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.

[0293] Step A56 may be a step indicating completion of the action of step A53.

[0294] In step A57, c may be set to c+1.

[0295] Step A58 may be a step indicating completion of the action of step A52.

[0296] 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.

[0297] Terminal device 1 can associate a PDSCH group identifier (PGI: PDSCH Group ID) with each PDSCH. The PGI of a certain PDSCH can be indicated based on at least a DCI format for scheduling the PDSCH. For example, a field representing the PGI (PGI field) can be included in the DCI format. For example, a PDSCH group can be a set of PDSCHs having the same PGI (PDSCH group identifier). A PDSCH group can be a PDSCH or a set 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 and / or RRC parameters.

[0298] The PGI field is a general term for the first PGI field and the second PGI field. The terminal device 1 may determine a 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.

[0299] For example, the second PGI field may be included in DCI format 1_1. For example, the number of bits N of the second PGI field PGI，second It can be 1 or 2. For example, the number of bits N in the second PGI field PGI，second It can be calculated by ceil(log2(N group For example, the number of bits N in the second PGI field is PGI，second You can also use ceil(log2(N group，max )). For example, the first PGI field may also not be included in DCI format 1_0. For example, the first PGI field may be included in DCI format 1_0. For example, the number of bits N of the first PGI field PGI，first It can be 1 or 2. For example, the number of bits N in the first PGI field PGI，first It can be calculated by ceil(log2(N group For example, the number of bits N in the first PGI field is PGI，first You can also use ceil(log2(N group，max )) to give.

[0300] ceil(A) is a function that rounds A to an upper integer. ceil(A) may be a function that outputs the smallest integer in a range that is not less than A. log2(B) is a function that calculates the logarithm of B with a base of 2.

[0301] For example, the DCI format 1_0 not including the first PGI field may be set for the terminal device 1, and the DCI format 1_1 including the second PGI field may be set. Here, the number of bits N of the second PGI field is PGI，second It can be ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be greater than ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be ceil(log2(N group，max )). Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 may be associated with the PDSCH group with the smallest index (e.g., the PDSCH group with index 0) among the PDSCH groups set for the terminal device 1. Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 may also be associated with the PDSCH group with the largest index (e.g., the PDSCH group with index N) among the PDSCH groups set for the terminal device 1. group Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 may also be associated with a predetermined PDSCH group (for example, a PDSCH group fixed in advance according to the description in the specification, etc.). Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 may not be associated with the PDSCH group of N group Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_1 may also be associated with a PDSCH group determined based on at least the value of the second PGI field.

[0302] For example, a DCI format 1_0 including a first PGI field may be set for the terminal device 1, and a DCI format 1_1 including a second PGI field may be set. Here, the number of bits N of the first PGI field is PGI，first It can be ceil(log2(N group )). Here, the number of bits N of the first PGI field PGI，first It can also be greater than ceil(log2(N group )). Here, the number of bits N of the first PGI field PGI，first It can also be ceil(log2(N group，max )). Here, the number of bits of the second PGI field is N PGI，second It can be ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be greater than ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be ceil(log2(N group，max )). Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 may be associated with the PDSCH group determined at least based on the value of the first PGI field. Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_1 may also be associated with the PDSCH group determined at least based on the value of the second PGI field.

[0303] The requested PDSCH group (RPG) may be a PDSCH group corresponding to the HARQ-ACK information sent (reported) via the next PUCCH or PUSCH. RPG (Requested PDSCH Group) may include one PDSCH group or multiple PDSCH groups. The indication of RPG may be represented in the form of a bitmap corresponding to each PDSCH group based at least on the DCI format. The terminal device 1 may generate a HARQ-ACK codebook for the indicated RPG and send (report) via PUCCH or PUSCH. RPG may be represented based at least on the RPGI field included in the DCI format.

[0304] The RPGI field is a general term for the first RPGI field and the second RPGI field. The terminal device 1 may determine the requested PDSCH group based on at least a value of the RPGI field.

[0305] For example, the second RPGI field may be included in DCI format 1_1. For example, the first RPGI field may also not be included in DCI format 1_0. For example, the first RPGI field may be included in DCI format 1_0. For example, the number of bits N of the second RPGI field may be RPG，second Can be equal to N group For example, the number of bits in the second RPGI field is N RPG，second It can also be equal to N group，max .

[0306] For example, a DCI format 1_0 not including the first RPGI field may be set for the terminal device 1, and a DCI format 1_1 including the second RPGI field may be set. Here, the number of bits of the second RPGI field may be equal to N group Here, the number of bits of the second RPGI field may also be equal to N group，max Here, the detection of the DCI format 1_0 may trigger the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs associated with the PDSCH group with the smallest index (e.g., the PDSCH group with index 0). Here, the detection of the DCI format 1_0 may also trigger the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs associated with the PDSCH group with the largest index (e.g., the PDSCH group with index N). group The transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs of the PDSCH group not associated with N-1 can also be triggered by the detection of the DCI format 1_0. The transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs associated with the specified PDSCH group (for example, a PDSCH group fixed in advance according to the specification, etc.) can also be triggered by the detection of the DCI format 1_0. group The transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs of any one of the PDSCH groups. Here, the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups represented at least based on the second RPGI field can also be triggered by detecting the DCI format 1_1.

[0307] For example, a DCI format 1_0 including a first RPGI field may be set for the terminal device 1, and a DCI format 1_1 including a second RPGI field may be set. Here, the number of bits of the first RPGI field may be equal to N group Here, the number of bits of the first RPGI field may also be equal to N group，max Here, the number of bits of the second RPGI field may be equal to N group Here, the number of bits of the second RPGI field may also be equal to N group，max . Here, the sending of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups represented by at least the first RPGI field can be triggered by the detection of the DCI format 1_0. Here, the sending of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups represented by at least the second RPGI field can also be triggered by the detection of the DCI format 1_1.

[0308] 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 represented 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 represented 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 represented 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.

[0309] 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.

[0310] For example, the timing indication field from PDSCH to HARQ feedback included in DCI format 1_0 may not represent 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 represent a non-numeric value. For example, the timing indication field from PDSCH to HARQ feedback included in DCI format 1_1 may not represent 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 represent a non-numeric value.

[0311] The NFI (New Feedback Indicator) field may be a DCI field indicating whether the HARQ-ACK information of the PDSCH is correctly detected. The NFI field may be a field indicating whether the HARQ-ACK bits stored in a recording medium such as a memory are erased (refreshed).

[0312] The NFI field is a general term for the first NFI field and the second NFI field.

[0313] For example, the DCI format 1_0 not including the first NFI field may be set for the terminal device 1, and the DCI format 1_1 including the second NFI field may be set. Here, the number of bits N of the second NFI field is NFI，second Can be equal to N group Here, the number of bits of the second NFI field is N NFI，second Can be equal to N group，max Here, it can be assumed that, through the detection of the DCI format 1_0, the NFI of the PDSCH group with the smallest index (for example, the PDSCH group with index 0) is flipped. Here, it can also be assumed that, through the detection of the DCI format 1_0, the NFI of the PDSCH group with the largest index (for example, the PDSCH group with index N group Here, it can also be assumed that by detecting the DCI format 1_0, the NFI of the specified PDSCH group (for example, the PDSCH group fixed in advance according to the specification, etc.) is flipped. Here, it can also be assumed that by detecting the DCI format 1_0, the NFI of the specified PDSCH group (for example, the PDSCH group fixed in advance according to the specification, etc.) is flipped. group The NFI of each PDSCH group is flipped. group The NFI of the PDSCH group is flipped. Here, the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups represented by at least the second NFI field can also be triggered by the detection of the DCI format 1_1. Here, the bits of the second NFI field included in the DCI format 1_1 can correspond to a PDSCH group respectively.

[0314] For example, a DCI format 1_0 including a first NFI field may be set for the terminal device 1, and a DCI format 1_1 including a second NFI field may be set. Here, the number of bits N of the first NFI field is NFI，first It can be 1. Here, the number of bits N of the second NFI field is NFI，second Can be equal to N group Here, the number of bits of the second NFI field is N NFI，second Can be equal to N group，max Here, the first NFI field included in the DCI format 1_0 may correspond to the PDSCH group with the smallest index (for example, the PDSCH group with index 0). Here, the first NFI field included in the DCI format 1_0 may correspond to the PDSCH group with the largest index (for example, the PDSCH group with index N group -1) corresponding to the PDSCH group. Here, the first NFI field included in the DCI format 1_0 may correspond to a specified PDSCH group (for example, a PDSCH group fixed in advance according to the specification, etc.). Here, the first NFI field included in the DCI format 1_0 may correspond to the PDSCH group associated with the PDSCH scheduled by the DCI format 1_0. Here, the bits of the second NFI field included in the DCI format 1_1 may correspond to one PDSCH group respectively.

[0315] For example, a DCI format 1_0 including a first NFI field may be set for the terminal device 1, and a DCI format 1_1 including a second NFI field may be set. Here, the number of bits N of the first NFI field is NFI，first Can be equal to N group Here, the number of bits of the first NFI field is N NFI，first Can be equal to N group，max Here, the number of bits of the second NFI field is N NFI，second Can be equal to N group Here, the number of bits of the second NFI field is N NFI，second Can be equal to N group，max Here, the bits of the first NFI field included in the DCI format 1_0 may correspond to one PDSCH group respectively. Here, the bits of the second NFI field included in the DCI format 1_1 may correspond to one PDSCH group respectively.

[0316] 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. For each PDSCH group, the initial value of the value of the saved NFI bit may be preset 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 may also determine that the HARQ-ACK information corresponding to the PDSCH group in which the NFI bit is flipped is detected in the base station device 3. For example, in the case where the HARQ-ACK information corresponding to the PDSCH group is detected, the base station device 3 may flip the NFI bit corresponding to the PDSCH group. When the received NFI bit is equal to the value of the stored NFI bit, it can be determined that the NFI bit has not been flipped. The terminal device 1 can determine that the HARQ-ACK information corresponding to the PDSCH group in which the NFI bit has not been flipped is not detected in the base station device 3. For example, when the HARQ-ACK information corresponding to the PDSCH group is not detected, the base station device 3 may not flip the NFI bit corresponding to the PDSCH group. Here, flipping means switching to a different value.

[0317] 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 corresponding to the PDSCH group is flipped (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 into 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 HARQ-ACK information that has not been reported. Here, refreshing means returning the HARQ-ACK information to the initial value (for example, NACK). When receiving the flipped NFI and then sending the HARQ-ACK codebook corresponding to the PDSCH group for the NFI bit, the terminal device 1 generates and sends the HARQ-ACK codebook using the HARQ-ACK information that has not been refreshed (the HARQ-ACK information that has not been reported). When receiving the NFI that has not been flipped and then sending the HARQ-ACK codebook corresponding to the PDSCH group for the NFI bit, the terminal device 1 generates and sends the HARQ-ACK codebook using the HARQ-ACK information that has not been refreshed (the HARQ-ACK information that has been reported and the HARQ-ACK information that has not been reported).

[0318] 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.

[0319] Fig.12 FIG. 1 is a diagram showing an example of reporting of HARQ-ACK information according to one embodiment of the present invention. Fig.12 In the figure, the blocks with slashes represent PDCCH, the blocks with white paint represent PDSCH, and the blocks with vertical lines represent PUCCH. Here, the DCI format for scheduling PDSCH1111 is included in PDCCH1101, the DCI format for scheduling PDSCH1112 is included in PDCCH1102, the DCI format for scheduling PDSCH1113 is included in PDCCH1103, the DCI format for scheduling PDSCH1114 is included in PDCCH1104, and the DCI format for scheduling PDSCH1115 is included in PDCCH1105. Here, through the DCI format included in PDCCH1101, G1 is represented as PGI, and the numerical value is represented as K1. Here, through the DCI format included in PDCCH1102, G2 is represented as PGI, the first value is represented as NFI corresponding to PDSCH group G2, and the non-numerical value is represented as K1. Here, G1 is represented as PGI and the numerical value is represented as K1 through the DCI format included in PDCCH1103. Here, G2 is represented as PGI through the DCI format included in PDCCH1104, the second value is represented as NFI corresponding to PDSCH group G2, and the non-numerical value is represented as K1. Here, the third value is represented as NFI corresponding to PDSCH group G2 through the DCI format included in PDCCH1105.

[0320] Here, Fig.12 The arrow from each PDSCH toward any one of the PUCCHs shown in the figure indicates that the initial transmission of the HARQ-ACK bit 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).

[0321] Here, HARQ-ACK information 1131 is transmitted (reported) via PUCCH 1121. HARQ-ACK information 1131 includes at least a HARQ-ACK bit corresponding to a transport block included in PDSCH 1111. Here, the resource of PUCCH 1121 is determined based on at least the value of the PUCCH resource indication field included in the DCI format included in PDCCH 1101. Here, the timing K1 indicated by the DCI format included in the PDCCH 1111 is a numerical value.

[0322] Here, HARQ-ACK information 1132 is transmitted (reported) via PUCCH 1122. HARQ-ACK information 1132 includes at least a HARQ-ACK bit corresponding to a transport block included in PDSCH 1113. In addition, HARQ-ACK information 1132 may include at least a HARQ-ACK bit corresponding to a transport block included in PDSCH 1112. Here, for example, the PDSCH group associated with PDSCH 1112 and PDSCH 1113 may be the same. Here, the resources of PUCCH 1122 are determined based on at least the value of the PUCCH resource indication field included in the DCI format included in PDCCH 1103.

[0323] Here, HARQ-ACK information 1133 is transmitted (reported) via PUCCH 1123. HARQ-ACK information 1133 includes at least a HARQ-ACK bit corresponding to a transport block included in PDSCH 1115. In addition, HARQ-ACK information 1133 may include at least a HARQ-ACK bit corresponding to a transport block included in PDSCH 1114. Here, for example, the PDSCH groups associated with PDSCH 1114 and PDSCH 1115 may be the same. Here, the resources of PUCCH 1123 are determined based on at least the value of the PUCCH resource indication field included in the DCI format included in PDCCH 1105.

[0324] exist Fig.12 In the HARQ-ACK information 1132 transmitted via PUCCH 1122, the terminal device 1 may include the HARQ-ACK bits corresponding to the transport blocks included in PDSCH 1112 in the HARQ-ACK information 1132 transmitted via PUCCH 1122, regardless of whether the first value is different from the second value (or whether the NFI is flipped, whether the NFI corresponding to PDSCH group G2 is flipped). Regardless of whether the second value is different from the third value (or whether the NFI corresponding to PDSCH group G2 is flipped), the terminal device 1 may multiplex the HARQ-ACK bits corresponding to the transport blocks included in PDSCH 1114 into the HARQ-ACK codebook 1133 transmitted via PUCCH 1123. In the case where the second value is the same as the third value (or is not flipped, the NFI corresponding to PDSCH group G2 is not flipped), the terminal device 1 may include the HARQ-ACK bits corresponding to the transport blocks included in PDSCH 1112 in the HARQ-ACK information 1133. When the second value is different from the third value (or is flipped, the NFI corresponding to the PDSCH group G2 is flipped), the terminal device 1 may not include the HARQ-ACK information corresponding to the transport block included in the PDSCH1112 in the HARQ-ACK information 1133.

[0325] Fig.13 is an example of a flipped state of the NFI bit representing a scheme of the present embodiment. The received NFI may be the NFI indicated by the DCI format of the scheduled PDSCH. The received NFI may also be the NFI indicated by the latest DCI format of the scheduled PDSCH. The saved NFI may be the NFI that has been saved in the terminal device 1 before detecting the latest DCI format of the scheduled PDSCH. Each entry of the saved NFI may be a saved NFI bit corresponding to each PDSCH group (for example, PDSCH group G1 and PDSCH group G2), respectively. For example, when the saved NFI is (0, 1), the value of the saved NFI bit of PDSCH group G1 is 0, and the value of the saved NFI bit of PDSCH group G2 is 1. Fig.13 In the table, for PDSCH group G2, by Fig.12 The concept of saving NFI bits and receiving NFI bits is explained with a specific example. At the time point when terminal device 1 detects PDCCH1101, the value of the saved NFI bit is the initial value, and the received NFI bit is not represented by the DCI format included in PDCCH1101. After detecting PDCCH1101, the value of the saved NFI bit may not be updated. At the time point when terminal device 1 detects PDCCH1102, the value of the saved NFI bit is the initial value, and the value of the received NFI bit is the first value represented by the DCI format included in PDCCH1102. After detecting PDCCH1102, the value of the saved NFI bit may be updated to the first value. At the time point when terminal device 1 detects PDCCH1103, the value of the saved NFI bit is the first value, and the received NFI bit is not represented by the DCI format included in PDCCH1103. After detecting PDCCH1103, the value of the saved NFI bit may not be updated. At the time point when the terminal device 1 detects PDCCH1104, the value of the saved NFI bit is the first value, and the value of the received NFI bit is the second value represented by the DCI format included in PDCCH1104. After detecting PDCCH1104, the value of the saved NFI bit can be updated to the second value. At the time point when the terminal device 1 detects PDCCH1105, the value of the saved NFI bit is the second value, and the value of the received NFI bit is the third value represented by the DCI format included in PDCCH1105. That is, in a certain case, when the PGI represented by the DCI format of the scheduling PDSCH is G1, the terminal device 1 may not update the received NFI corresponding to the PDSCH group G2. In addition, in a certain case, when the PGI represented by the DCI format of the scheduling PDSCH is G1, the terminal device 1 may not update the saved NFI corresponding to the PDSCH group G2. Furthermore, in a certain case, when the PGI indicated by the DCI format for scheduling the PDSCH is G1, the terminal device 1 may not update the reception NFI corresponding to the PDSCH group G2, but the terminal device 1 may update the storage NFI for the PDSCH group G2.

[0326] The terminal device 1 can process the HARQ-ACK bit according to the reporting status of the HARQ-ACK bit corresponding to the PDSCH and whether the NFI bit of the PDSCH group to which the PDSCH belongs is flipped. When the reporting status of the HARQ-ACK information corresponding to the transport block included in the PDSCH for a certain PDSCH is reported and the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is flipped, the terminal device 1 can judge that the HARQ-ACK bit corresponding to the transport block included in the PDSCH is correctly detected. That is, in the case where the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is flipped, the terminal device 1 may not retransmit the HARQ-ACK bit. In the case where the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is flipped, the terminal device 1 can delete the HARQ-ACK bit. That is, the terminal device 1 may not include the HARQ-ACK bit in the HARQ-ACK information after making a judgment to delete the HARQ-ACK bit. The HARQ-ACK information corresponding to the transport block included in a certain PDSCH may also be referred to as a HARQ-ACK entry of the PDSCH in the HARQ-ACK codebook. The HARQ-ACK entry may include one HARQ-ACK bit or multiple HARQ-ACK bits.

[0327] When, for a certain PDSCH, the reporting status of the HARQ-ACK information corresponding to the PDSCH is not reported and the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is flipped, the terminal device 1 may not judge that the HARQ-ACK information corresponding to the PDSCH is correctly detected. That is, when the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is flipped, the HARQ-ACK information can be sent in the terminal device 1. The terminal device 1 may not delete the HARQ-ACK information when the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is flipped. That is, the terminal device 1 may take the HARQ-ACK information into consideration when generating the HARQ-ACK codebook.

[0328] exist Fig.12 In the present invention, when the terminal device 1 generates HARQ-ACK information (e.g., HARQ-ACK information 1133) to be sent via the PUCCH (e.g., PUCCH1123), if the NFI bit corresponding to the PDSCH group G2 is not flipped, the terminal device 1 can generate the HARQ-ACK information 1133 in a manner that includes both the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH that have been reported (e.g., the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH1112) and the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH that have not yet been reported (e.g., the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH1114). Here, the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH that have not yet been reported may include the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH scheduled by the DCI format, indicating that the HARQ-ACK feedback timing is the value of K1 of the time slot of the PUCCH (for example, HARQ-ACK information corresponding to the transport blocks included in PDSCH1115). Alternatively, the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH that have not yet been reported may also not include the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH scheduled by the DCI format representing the NFI (for example, the HARQ-ACK bits corresponding to the transport blocks included in PDSCH1115). In this case, when the NFI bit corresponding to the PDSCH group G2 is not flipped, the HARQ-ACK information 1133 can be generated in a total manner including the reported HARQ-ACK bits corresponding to the transport blocks included in the PDSCH (for example, the HARQ-ACK bits corresponding to the transport blocks included in PDSCH1112), the not yet reported HARQ-ACK bits corresponding to the transport blocks included in the PDSCH (for example, the HARQ-ACK bits corresponding to the transport blocks included in PDSCH1114), and the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH scheduled by the DCI format indicating that the HARQ-ACK feedback timing is the value of K1 of the time slot of the PUCCH (for example, the HARQ-ACK bits corresponding to the transport blocks included in PDSCH1115). Fig.12 In the case where the NFI bit corresponding to the PDSCH group G2 is flipped when generating the HARQ-ACK information 1133, the terminal device 1 may delete the HARQ-ACK bit corresponding to the transport block included in the PDSCH 1112 from the recording medium (or, may not include it in the HARQ-ACK information 1133). That is, the terminal device 1 may not include the HARQ-ACK bit corresponding to the transport block included in the PDSCH 1112 in the HARQ-ACK information 1133. The terminal device 1 may also include the HARQ-ACK bit corresponding to the transport block included in the PDSCH 1114 in the HARQ-ACK information 1133. Here, whether the NFI bit is flipped can be determined based on at least a comparison of the value of the NFI bit represented by the DCI format included in the PDCCH 1105 with the value of the NFI bit represented by the DCI format included in the PDCCH 1103. When the two values ​​are different, terminal device 1 can determine that the NFI bit is flipped, and when the two values ​​are equal, it can be determined that the NFI bit is not flipped. It should be noted that multiplexing the HARQ-ACK bit to the HARQ-ACK codebook (or HARQ-ACK information) may mean that when the HARQ-ACK codebook (or HARQ-ACK information) is generated, the HARQ-ACK codebook (or the HARQ-ACK information) includes the HARQ-ACK bit. Alternatively, it may also mean that the HARQ-ACK bit and the HARQ-ACK codebook (or HARQ-ACK information) are multiplexed to the same signal or channel.

[0329] Fig.14 This is an example of reporting HARQ-ACK information when the NFI bit corresponding to a certain PDSCH group is inverted according to one scheme of the present embodiment.

[0330] exist Fig.12 and Fig.14 In the example of generating the HARQ-ACK codebook 1131, the association with the HARQ-ACK feedback is described. The HARQ-ACK feedback means that the terminal device 1 sends the HARQ-ACK corresponding to the transport block included in the received PDSCH to the base station device 3.

[0331] exist Fig.14 In the Fig.13 An example of the indication from the base station device 3 and the processing in the terminal device 1 related to the generation of the HARQ-ACK codebook of the table is described. The base station device 3 indicates G1 as PGI, G1 as RPG, 1 as C-DAI, and (0, 0) as NFI via the DCI format included in PDCCH1101. When the terminal device 1 does not indicate (does not receive) NFI before detecting PDSCH1111, the saved NFI is kept as the initial value (0, 0). The terminal device 1 detects PDCCH1101 and considers that the PGI of PDSCH1111 scheduled by the DCI format included in PDCCH1101 is G1, the RPG is G1, the C-DAI is 1, and the received NFI is (0, 0). By comparing the received NFI bit for PDSCH group G1 and the saved NFI bit for the PDSCH group G1, the terminal device 1 can determine that the NFI bit of the PDSCH group G1 has not been flipped. By comparing the received NFI for PDSCH group G2 and the saved NFI for the PDSCH group G2, the terminal device 1 can determine that the NFI bit of the PDSCH group G2 has not been flipped. The terminal device 1 can set the reporting status (HARQ-ACK status) of the HARQ-ACK bit corresponding to the transport block included in PDSCH1111 to not-reported. Here, the reporting status can be set to reported when the HARQ-ACK bit corresponding to the transport block included in the PDSCH has been reported in the terminal device 1, and set to not-reported when the HARQ-ACK bit has not been reported. In addition, the reporting status can be set to reported when the HARQ-ACK bit corresponding to the transport block included in the PDSCH has been triggered in the terminal device 1 to send in a certain uplink physical channel and the sending of the uplink physical channel has been attempted, and can also be set to not-reported when the sending of the HARQ-ACK bit in a certain uplink physical channel has been triggered and the sending of the uplink physical channel has not been attempted. The reporting status may be set to not reported or not matched (N / A) when no HARQ-ACK bit corresponding to the transport block included in the PDSCH is triggered to be sent in a certain uplink physical channel in the terminal device 1. The initial value of the reporting status may also be pre-set to not matched (N / A).

[0332] exist Fig.14 , terminal device 1 detects PDCCH1102 and considers that the PGI of PDSCH1112 scheduled by the DCI format included in PDCCH1102 is G2, C-DAI is 1, and the received NFI is (0, 0). Terminal device 1 may also ignore the RPG indicated by the PDCCH of non-numerical K1 (e.g., PDCCH1102 and PDCCH1104). That is, the requested PDSCH group may be determined based on at least a PDCCH other than the PDCCH of non-numerical K1 (e.g., the PDCCH of numerical K1). For example, the requested PDSCH group corresponding to the HARQ-ACK codebook including the HARQ-ACK bits sent via a certain PUCCH may be represented by the RPGI field included in the determined DCI format for the resources of the certain PUCCH. Terminal device 1 can update the saved NFI to the NFI represented by the DCI format included in PDCCH1101 (that is, (0, 0)), and by comparing the received NFI (that is, (0, 0)) and the saved NFI (that is, (0, 0)), it is determined that the NFI bits corresponding to PDSCH group G1 and PDSCH group G2, respectively, have not been flipped. Terminal device 1 can set the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1112 to not-reported. Terminal device 1 can add the HARQ-ACK bits corresponding to the transport blocks included in PDSCH (for example, PDSCH1111) that meet at least part or all of conditions A1 to A4 to the HARQ-ACK information, and send (report) via PUCCH1121.

[0333] Condition A1: PGI is included in the requested PDSCH group

[0334] Condition A2: The reporting status of the HARQ-ACK information is not reported

[0335] Condition A3: The value of the associated K1 is a numeric value or the value of the associated K1 is a non-numeric value, and the HARQ-ACK information is deferred

[0336] Condition A4: NFI is flipped for the PDSCH group associated with the PDSCH that includes the transport block corresponding to the HARQ-ACK information

[0337] For example, the reporting state of the HARQ-ACK bit being not reported may be a state in which the transmission of the HARQ-ACK bit is not triggered. For example, the reporting state of the HARQ-ACK bit being not reported may be a state in which a new transmission (new transmission) of the HARQ-ACK bit is not triggered. For example, the reporting state of the HARQ-ACK bit being not reported may be a state in which the transmission of the HARQ-ACK bit has been triggered. For example, the reporting state of the HARQ-ACK bit being not reported may be a state in which a new transmission (new transmission) of the HARQ-ACK bit has been triggered. For example, the reporting state of the HARQ-ACK bit being not reported may be a state in which the reporting state of the HARQ-ACK bit is reported.

[0338] exist Fig.14 In the example, at the time point of generating HARQ-ACK information 1132 transmitted (reported) via PUCCH 1122, the HARQ-ACK bits of the non-numeric value K1 corresponding to the transport blocks included in PDSCH 1112 have been postponed (has been postponed), and the HARQ-ACK bits of the non-numeric value K1 corresponding to the transport blocks included in PDSCH 1114 are to be postponed (to be postponed). When generating HARQ-ACK information 1132, terminal device 1 may not include the HARQ-ACK bits to be postponed (e.g., the HARQ-ACK bits corresponding to the transport blocks included in PDSCH 114) in the HARQ-ACK information.

[0339] exist Fig.14 , it is assumed that the base station device 3 correctly detects the HARQ-ACK information 1131 sent (reported) via PUCCH1121. The terminal device 1 detects PDCCH1103 and considers that the PGI of PDSCH1113 scheduled by the DCI format included in PDCCH1103 is G1, the RPG is G1 and G2, the C-DAI is 1, and the received NFI is (1, 0). The terminal device 1 updates the saved NFI to the NFI represented by the DCI format included in PDCCH1102 (that is, (0, 0)). By comparing the received NFI bit for PDSCH group G1 and the saved NFI bit for the PDSCH group G1, the terminal device 1 can determine that the NFI bit of the PDSCH group G1 is flipped. By comparing the received NFI bit for PDSCH group G2 and the saved NFI bit for the PDSCH group G2, the terminal device 1 can determine that the NFI bit of the PDSCH group G2 is not flipped. The terminal device 1 may update the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1111 to reported (reported), or may set the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1113 to unreported.

[0340] Terminal device 1 detects PDCCH1104, and considers that the PGI of PDSCH1114 scheduled by the DCI format included in PDCCH1104 is G2, the C-DAI is 2, and the received NFI is (1, 0). Terminal device 1 updates the saved NFI to the NFI represented by PDCCH1103 (that is, (1, 0)). By comparing the received NFI bit for PDSCH group G1 with the saved NFI bit for the PDSCH group G1, terminal device 1 can determine that the NFI bit of the PDSCH group G1 has not been flipped. By comparing the received NFI bit for PDSCH group G2 with the saved NFI bit for the PDSCH group G2, terminal device 1 can determine that the NFI bit of the PDSCH group G2 has not been flipped. The terminal device 1 may reset the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1111 to an initial value (e.g., N / A), or may set the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1114 to unreported. Here, the terminal device 1 may delete (refresh) the HARQ-ACK information from the recording medium based at least on the fact that the NFI bit corresponding to PDSCH group G1 is flipped and the reporting status of the HARQ-ACK information corresponding to the transport block included in PDSCH1111 is reported. In addition, the terminal device 1 may not refresh the HARQ-ACK bit based at least on the fact that the NFI bit corresponding to PDSCH group G2 is not flipped and / or the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1112 is unreported. The terminal device 1 may include the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH (that is, PDSCH1112 and PDSCH1113) that satisfy at least part or all of conditions A1 to A4 in the HARQ-ACK information 1132 and send (report) them via PUCCH1122.

[0341] exist Fig.14 , it is assumed that the base station device 3 correctly detects the HARQ-ACK information 1132 sent (reported) via PUCCH1122. The terminal device 1 detects PDCCH1105 and considers that the PGI of PDSCH1115 scheduled by the DCI format included in PDCCH1105 is G1, the RPG is G1 and G2, the C-DAI is 1, and the received NFI is (0, 1). The terminal device 1 updates the saved NFI to the NFI represented by PDCCH1104 (that is, (1, 0)). By comparing the received NFI bit for PDSCH group G1 and the saved NFI bit for the PDSCH group G1, the terminal device 1 can determine that the NFI bit of the PDSCH group G1 is flipped. By comparing the received NFI bit for PDSCH group G2 and the saved NFI bit for the PDSCH group G2, the terminal device 1 can determine that the NFI bit of group G2 is flipped. Here, the terminal device 1 can delete (refresh) the HARQ-ACK bit from the recording medium based on at least the NFI bit corresponding to the PDSCH group G1 being flipped and the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1113 being reported. In addition, the terminal device 1 can also delete (refresh) the HARQ-ACK bit from the recording medium based on at least the NFI bit corresponding to the PDSCH group G2 being flipped and the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1112 being reported. In addition, the terminal device 1 can also not delete (refresh) the HARQ-ACK bit from the recording medium based on at least the NFI bit corresponding to the PDSCH group G2 being flipped and / or the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1114 being unreported. Terminal device 1 may update the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1112 to reported, may update the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1113 to reported, and may set the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1115 to unreported. Terminal device 1 may include the HARQ-ACK bits corresponding to the transport blocks included in PDSCH (e.g., PDSCH1114 and PDSCH1115) that satisfy at least part or all of conditions A1 to A4 in HARQ-ACK information 1133, and transmit (report) via PUCCH1123.

[0342] Fig.15 This is an example of reporting HARQ-ACK information when the NFI bit corresponding to a certain PDSCH group is not flipped according to a scheme of the present embodiment.

[0343] exist Fig.15 , it is assumed that the base station device 3 does not detect PUCCH1122. That is, it is assumed that the terminal device 1 retransmits the HARQ-ACK information included in PUCCH1122. The terminal device 1 detects PDCCH1105, and considers that the PGI of PDSCH1115 scheduled by the DCI format included in PDCCH1105 is G1, the RPG is G1 and G2, the C-DAI is 2, and the received NFI is (1, 0). The terminal device 1 updates the saved NFI to the NFI represented by PDCCH1104 (that is, (1, 0)). By comparing the received NFI bit for PDSCH group G1 and the saved NFI bit for the PDSCH group G1, the terminal device 1 can determine that the NFI bit of the PDSCH group G1 has not been flipped. By comparing the received NFI bit for PDSCH group G2 and the saved NFI bit for the PDSCH group G2, the terminal device 1 can determine that the NFI bit of the PDSCH group G2 has not been flipped. The terminal device 1 can set the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1115 to unreported. Here, the terminal device 1 can at least based on the fact that the NFI bit corresponding to the PDSCH group G1 has not been flipped and / or the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1113 is reported, without deleting (refreshing) the HARQ-ACK bit from the recording medium. In addition, the terminal device 1 may also not delete (refresh) the HARQ-ACK bit from the recording medium, at least based on the fact that the NFI bit corresponding to the PDSCH group G2 has not been flipped and / or the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1112 is reported. In addition, the terminal device 1 may also not delete (refresh) the HARQ-ACK bit from the recording medium based at least on the fact that the NFI bit corresponding to the PDSCH group G2 is not flipped and / or the reporting status of the HARQ-ACK bit corresponding to the transport block included in PDSCH1114 is not reported. The terminal device 1 may include the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH (for example, PDSCH1112, PDSCH1113, PDSCH1114, and PDSCH1115) that satisfy at least part or all of conditions A1 to A4 in the HARQ-ACK information 1133, and send (report) via PUCCH1123. Here, the transmission of the HARQ-ACK bits corresponding to the transport blocks included in PDSCH1112 and PDSCH1113, respectively, is a retransmission, and the transmission of the HARQ-ACK bits corresponding to the transport blocks included in PDSCH1114 and PDSCH1115, respectively, is an initial transmission.

[0344] The terminal device 1 can determine the PDSCH group included in the requested PDSCH group based on at least the values ​​represented by the PGI field and the RPGI field included in the DCI format used for scheduling the PDSCH when generating HARQ-ACK information corresponding to the TB (transport block) of a certain PDSCH. The requested PDSCH group can be a set of one PDSCH group or multiple PDSCH groups. The HARQ-ACK bits corresponding to the TB of the PDSCH associated with the PDSCH group included in the requested PDSCH group can be requested (required) from the base station device 3 in the terminal device 1. Here, N group It can be 2, the number of bits of the PGI field can be 1, and the number of bits of the RPGI field can be 1. For example, in the case where the first RPGI value is represented by the RPGI field, the terminal device 1 can include the PDSCH group associated with the PDSCH in the requested PDSCH group. For example, in the case where the second RPGI value is represented by the RPGI field, the terminal device 1 can include the PDSCH group associated with the PDSCH and the PDSCH group other than the PDSCH group associated with the PDSCH in the requested PDSCH group. The terminal device 1 can send (report) the HARQ-ACK information corresponding to the TB of the PDSCH associated with the PDSCH group included in the requested PDSCH group via the PUCCH or PUSCH. In this way, by reducing the RPGI field for multiple PDSCH groups to 1 bit, efficient downlink control can be performed.

[0345] For example, the first RPGI value may be 0, and the second RPGI value may be 1. For example, the first RPGI value may be 1, and the second RPGI value may be 0.

[0346] For example, the first RPGI value may be the value of the PGI field of the PDSCH group identifier representing the PDSCH group associated with the PDSCH. For example, the second RPGI value may be the value of the PGI field of the PDSCH group identifier representing the PDSCH group other than the PDSCH group associated with the PDSCH. For example, the first RPGI value may represent the PDSCH group identifier of the PDSCH group associated with the PDSCH, and the second RPGI value may represent the PDSCH group identifier of the PDSCH group other than the PDSCH group associated with the PDSCH.

[0347] In N group When the upper layer parameter is set to 2 and the upper layer parameter is set to the specified value, the number of bits of the first PGI field included in the DCI format 1_1 may be 1. The upper layer parameter may be set to the upper layer parameter pdsch-HARQ-ACK-codebook. When the upper layer parameter pdsch-HARQ-ACK-codebook is set to dynamic, the terminal device 1 may be based on at least Fig. 9 , Fig.10 as well as Fig.11 The HARQ-ACK codebook is generated by using part or all of the records in the upper layer parameter pdsch-HARQ-ACK-codebook. In the case where the upper layer parameter is the upper layer parameter pdsch-HARQ-ACK-codebook, the specified value can be set to dynamic. The upper layer parameter can be a parameter used to set the PGI field. The upper layer parameter can be a parameter that indicates whether the service cell to which the terminal device 1 is connected is operating in NR-U. The upper layer parameter can be used for functions other than those described above. That is, the upper layer parameter can also be used for purposes other than determining the number of bits in the RPGI field. In N group When N is 1 or the upper layer parameter is not set to the specified value, the number of bits of the first PGI field may be 0. group When N is 2 and the upper layer parameter is set to the specified value, the number of bits of the first RPGI field included in DCI format 1_1 may be 1. group When the K1 value is set to 1 or the upper layer parameter is not set to the specified value, the number of bits of the first RPGI field can be 0. The value of the RPGI field included in the DCI format in which the K1 value is set to a non-numeric value can be set to reserved. That is, the terminal device 1 can ignore the value of the RPGI field included in the DCI field in which the K1 value is set to a non-numeric value.

[0348] In N group When N is 0 or the PDSCH group is not set or the upper layer parameter is not set to the specified value, the number of bits of the first NFI field included in the DCI format 1_1 may be 0. group When N is 1 and the upper layer parameter is set to the specified value, the number of bits of the first NFI field may be 1, and the one bit may correspond to the PDSCH group indicated by the PGI field. group When it is 2 and the upper layer parameter is set to the specified value, the number of bits of the first NFI field can be 2, and each bit can correspond to each PDSCH group respectively.

[0349] DCI format 1_0 may not include the PGI field or the RPGI field. group When the RPGI field is not included in the detected DCI format 1_0 and N is set to the above-mentioned upper layer parameter as the above-mentioned prescribed value, the terminal device 1 can regard the number of bits of the PGI field as 0 (that is, the number of bits of the PGI field can be regarded as 0). group When the NFI field is not included in the detected DCI format 1_0 and the upper layer parameter is set to the specified value, the terminal device 1 may regard the RPGI field as being set to the first RPGI value. group When it is an integer of 1 or greater and the higher layer parameter is set to the specified value, the terminal device 1 can regard that the NFI bit corresponding to the predetermined PDSCH group (for example, PDSCH group 0) is flipped.

[0350] Fig.16 This is an example of a setting value of the RPGI field according to one aspect of the present embodiment (first RPGI value).

[0351] Fig.17 This is an example of a setting value of the RPGI field according to one aspect of the present embodiment (second RPGI value).

[0352] exist Fig.12 , Fig.16 as well as Fig.17 In the example of generating HARQ-ACK information including HARQ-ACK bits corresponding to the TB of PDSCH1113, the functions of the PGI field and the RPGI field are described. Here, it is assumed that PDSCH1111 is associated with PDSCH group G1 (the PGI field included in the DCI format of PDCCH1101 is set to G1), PDSCH1112 is associated with PDSCH group G2 (the PGI field included in the DCI format of PDCCH1102 is set to G2), and PDSCH1113 is associated with PDSCH group G2 (the PGI field included in the DCI format of PDCCH1103 is set to G2). Here, it can also be assumed that the value of K1 set in the DCI format for scheduling of PDSCH1111 is a numerical value, the value of K1 set in the DCI format for scheduling of PDSCH1112 is a non-numerical value, and the value of K1 set in the DCI format for scheduling of PDSCH1113 is a numerical value.

[0353] exist Fig.16 In the DCI format for scheduling PDSCH1113, the RPGI field included in the RPGI field is set to the first RPGI value, and in the base station device 3, the HARQ-ACK information corresponding to the PDSCH group G2 is requested by the terminal device 1. In the case where the first RPGI value is represented by the RPGI field included in the DCI format for scheduling PDCCH1103, the terminal device 1 can include the PDSCH group G2 in the requested PDSCH group, generate HARQ-ACK information for the requested PDSCH group, and send it via PUCCH1122. That is, HARQ-ACK information corresponding to TBs of PDSCH1112 and PDSCH1113 associated with the PDSCH group G2 included in the requested PDSCH group can also be generated and sent via PUCCH1122. That is, HARQ-ACK information corresponding to TBs of PDSCH1111 associated with the PDSCH group G1 not included in the requested PDSCH group may also not be generated. In this way, by reducing the RPGI field for two PDSCH groups to 1 bit, efficient downlink control can be performed.

[0354] exist Fig.17 In the DCI format for scheduling PDSCH1113, the RPGI field included in the RPGI field is set to the second RPGI value, and in the base station device 3, the HARQ-ACK information corresponding to the PDSCH group G2 and the PDSCH group G1 is requested by the terminal device 1. In the case where the second RPGI value is represented by the RPGI field included in the DCI format for scheduling PDCCH1103, the terminal device 1 can include the PDSCH group G2 and the PDSCH group G1 in the requested PDSCH group, generate HARQ-ACK information for the requested PDSCH group, and send it via PUCCH1122. That is, HARQ-ACK information corresponding to the TBs of PDSCH1112, PDSCH1113, and PDSCH1111 associated with the PDSCH group G2 and the PDSCH group G1 included in the requested PDSCH group can also be generated and sent via PUCCH1122. In this way, by reducing the RPGI field for two PDSCH groups to 1 bit, efficient downlink control can be performed.

[0355] Below, in Fig.16 and Fig.17 In the example of setting the first RPGI value and the second RPGI value, an example is described. For example, the first RPGI value may be set to 0, and the second RPGI value may be set to 1. For example, when the RPGI field included in the DCI format of PDCCH1103 indicates 0, the terminal device 1 may include PDSCH group G2 in the requested PDSCH group. For example, when the RPGI field included in the DCI format of PDCCH1103 indicates 1, the terminal device 1 may include PDSCH group G2 and PDSCH group G1 in the requested PDSCH group.

[0356] exist Fig.16 and Fig.17 For example, the first RPGI value may be set to 1 and the second RPGI value may be set to 0. For example, the terminal device 1 may include the PDSCH group G2 in the requested PDSCH group when the RPGI field included in the DCI format of PDCCH1103 indicates 1. For example, the terminal device 1 may also include the PDSCH group G2 and the PDSCH group G1 in the requested PDSCH group when the RPGI field included in the DCI format of PDCCH1103 indicates 0.

[0357] exist Fig.12 , Fig.16 as well as Fig.17 , it is assumed that the terminal device 1 associates the PDSCH with the PDSCH group G1 when the PGI field included in the DCI format for scheduling the PDSCH is set to 0, and associates the PDSCH with the PDSCH group G2 when the PGI field is set to 1. The terminal device 1 may include the PDSCH group G2 in the requested PDSCH group when the RPGI field included in the DCI format of PDCCH1103 indicates 1 (the value of the PGI field of the PDSCH group G2). The terminal device 1 may also include the PDSCH group G2 and the PDSCH group G1 in the requested PDSCH group when the RPGI field included in the DCI format of PDCCH1103 indicates 0 (the value of the PGI field of the PDSCH group G1). Fig.16 In , the first RPGI value can be set to the value of the PGI field representing the PDSCH group G2 (for example, 1). Fig.17 In the example, the second RPGI value may be set to a value (eg, 0) representing the PGI field of the PDSCH group G1.

[0358] exist Fig.12 , Fig.16 as well as Fig.17 In the present invention, regardless of the value of the RPGI field included in the DCI field of PDCCH1103 or the value of the PGI field included in the DCI field of PDCCH1102 (that is, ignoring the two values), the terminal device 1 can send the HARQ-ACK bit corresponding to the TB of PDSCH1112 scheduled by the DCI format in which the K1 value is set to a non-numeric value via PUCCH1122.

[0359] 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).

[0360] Element A1: Constructing a second SS burst set in the certain component carrier (or the certain serving cell)

[0361] Element A2: The base station device 3 sends a second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0362] Element A3: The terminal device 1 receives the second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0363] 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).

[0364] 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)

[0365] 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)

[0366] 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).

[0367] Element B1: Constructing the first SS burst set in the certain component carrier (or the certain serving cell)

[0368] Element B2: The base station device 3 sends the first SS / PBCH block in the certain component carrier (or the certain serving cell)

[0369] Element B3: The terminal device 1 receives the first SS / PBCH block in the certain component carrier (or the certain serving cell)

[0370] 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)

[0371] 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)

[0372] 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)

[0373] 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.

[0374] 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.

[0375] 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

[0376] 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

[0377] 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.

[0378] 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.

[0379] 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.

[0380] 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.

[0381] 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.

[0382] 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.

[0383] Setting 4: For a component carrier (or a serving cell), an upper layer parameter indicating operation in an unlicensed band is given

[0384] Setting 5: Setting a component carrier (or a serving cell) to operate in the unlicensed band

[0385] Scenario 6: A component carrier (or a serving cell) is included in the unlicensed band

[0386] 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" may be "NR-U is applied in the serving cell", and "NR-U is not applied in the component carrier" may be "NR-U is not applied in the serving cell".

[0387] 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.

[0388] Hereinafter, various device aspects of one aspect of the present embodiment will be described.

[0389] (1) In order to achieve the above-mentioned purpose, the scheme of the present invention adopts the following scheme. That is, the first scheme of the present invention is a terminal device, which comprises: a receiving unit, which receives a PDCCH and receives a PDSCH scheduled by a DCI format included in the PDCCH; and a sending unit, which sends HARQ-ACK information corresponding to the transport block of the PDSCH via a PUCCH or a PUSCH, and the terminal device comprises: each PDSCH group in two PDSCH groups is a set of PDSCHs having the same PDSCH group identifier represented by a PDSCH group indicator (PGI: PDSCH Group Indicator) field included in the DCI format for scheduling the PDSCH, and based on the value set to the PGI field included in the DCI format, it indicates whether the PDSCH belongs to the first PDSCH group or the second PDSCH group, that is, it indicates whether the PDSCH is associated with the first PDSCH group or the second PDSCH group, and when the requested PDSCH group indicator (RPGI: Requested PDSCH Group Indicator) field included in the DCI format is set, the PDSCH group indicator (RPGI: Requested PDSCH Group Indicator) field included in the DCI format is set. When the RPGI field included in the DCI format is set to the first RPGI value, it indicates that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs; when the RPGI field included in the DCI format is set to the second RPGI value, it indicates that the requested PDSCH group includes the PDSCH group to which the PDSCH belongs and PDSCH groups other than the PDSCH group, and the sending unit sends (reports) the HARQ-ACK information corresponding to the transport block of the PDSCH belonging to the PDSCH group included in the requested PDSCH group.

[0390] (2) A second solution of the present invention is a terminal device, comprising: the first RPGI value is 0, and the second RPGI value is 1.

[0391] (3) A third aspect of the present invention is a terminal device, comprising: the first RPGI value is 1, and the second RPGI value is 0.

[0392] (4) The fourth scheme of the present invention is a terminal device, which includes: the first RPGI value is the value of the PGI field of the PDSCH group identifier representing the PDSCH group to which the PDSCH belongs, and the second RPGI value is the value of the PGI field of the PDSCH group identifier representing the PDSCH group other than the PDSCH group to which the PDSCH belongs.

[0393] (5) A fifth scheme of the present invention is a base station device, comprising: a transmitting unit, transmitting a PDCCH, and transmitting a PDSCH scheduled by a DCI format included in the PDCCH; and a receiving unit, receiving HARQ-ACK information corresponding to a transport block of the PDSCH via a PUCCH or a PUSCH, wherein each of two PDSCH groups is a set of PDSCHs having the same PDSCH group identifier represented by a PGI field included in a DCI format for scheduling the PDSCH, and a PDSCH group identifier is set according to whether the PDSCH belongs to a first PDSCH group or a second PDSCH group, that is, according to whether the PDSCH belongs to a first PDSCH group or a second PDSCH group, that is, according to whether the PDSCH belongs to a first PDSCH group or a second PDSCH group. The value of the PGI field included in the DCI format is set based on whether the PDSCH is associated with the first PDSCH group or the second PDSCH group. When the requested PDSCH group includes the PDSCH group to which the PDSCH belongs, the RPGI field included in the DCI format is set to the first RPGI value. When the requested PDSCH group includes the PDSCH group to which the PDSCH belongs and a PDSCH group other than the PDSCH group, the RPGI field included in the DCI format is set to the second RPGI value. The receiving unit receives HARQ-ACK information corresponding to the transport block of the PDSCH belonging to the PDSCH group included in the requested PDSCH group.

[0394] (6) A sixth aspect of the present invention is a base station device, comprising: the first RPGI value is 0, and the second RPGI value is 1.

[0395] (7) A seventh aspect of the present invention is a base station device, comprising: the first RPGI value is 1, and the second RPGI value is 0.

[0396] (8) The eighth scheme of the present invention is a base station device, which includes: the first RPGI value is the value of the PGI field of the PDSCH group identifier representing the PDSCH group to which the PDSCH belongs, and the second RPGI value is the value of the PGI field of the PDSCH group identifier representing the PDSCH group other than the PDSCH group to which the PDSCH belongs.

[0397] According to the above-mentioned embodiment 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 properly implemented. By properly controlling the HARQ-ACK information not detected in the base station device 3 to be retransmitted through the terminal device 1, and properly controlling the HARQ-ACK information detected in the base station device 3 not to be retransmitted through the terminal device 1, the present invention can achieve efficient communication.

[0398] The program operating in the base station device 3 and the terminal device 1 involved in the present invention may be a program (a program that makes a computer function) that controls a CPU (Central Processing Unit) and the like to realize the functions of the above-mentioned embodiment involved in 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.

[0399] 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.

[0400] 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.

[0401] 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.

[0402] 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.

[0403] 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.

[0404] 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.

[0405] 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.

[0406] 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.

[0407] 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, the present invention can be variously modified within the scope shown in the technical solution, 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.

[0408] Industrial Applicability

[0409] The present invention can be used, for example, in a communication system, a communication device (such as a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (such as a communication chip), or a program.

[0410] Description of Reference Numerals

[0411] 1(1A, 1B, 1C) Terminal device

[0412] 3 Base station equipment

[0413] 10, 30 Wireless transceiver

[0414] 11, 31 Antenna

[0415] 12, 32 RF Department

[0416] 13, 33 Baseband

[0417] 14, 34 Upper processing unit

[0418] 15, 35 Media access control layer processing unit

[0419] 16, 36 Radio Resource Control Layer Processing Unit

[0420] 91, 92, 93, 94 Search area set

[0421] 301 Main Area

[0422] 302, 303 Auxiliary cells

[0423] 801, 802, 803, 804, 805, 806 Search zone set surveillance opportunities

[0424] 811, 812, 813, 814 DCI formats

[0425] 1101, 1102, 1103, 1104, 1105 PDCCH

[0426] 1111, 1112, 1113, 1114, 1115 PDSCH

[0427] 1121, 1122, 1123 PUCCH< / ax>

Claims

1. A terminal device comprising: A receiving unit detects a downlink control information DCI format and receives a physical downlink shared channel PDSCH scheduled by the DCI format; and The transmitting unit transmits hybrid automatic repeat request positive acknowledgement HARQ-ACK information via a physical uplink control channel PUCCH, The DCI format includes a 1-bit field for requesting a PDSCH group, a field for a first PDSCH group identifier corresponding to the scheduled PDSCH, and a field indicating a timing K1 of HARQ feedback, When the value of the timing K1 is set to a numerical value and the value included in the 1-bit field is 0, the transmitting unit transmits the HARQ-ACK information corresponding to the PDSCH group of the first PDSCH group identifier, When the value of the timing K1 is set to a numerical value and the value included in the 1-bit field is 1, the transmitting unit transmits HARQ-ACK information corresponding to the PDSCH group of the first PDSCH group identifier and the PDSCH group of the PDSCH group identifier different from the first PDSCH group identifier, When the value of the timing K1 is set to a non-numeric value, the transmitting unit ignores the value included in the 1-bit field, and transmits the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format via the PUCCH.

2. A base station device, comprising: a transmitting unit that transmits a physical downlink control channel PDCCH and transmits a physical downlink shared channel PDSCH scheduled by a downlink control information DCI format included in the PDCCH; and The receiving unit receives hybrid automatic repeat request positive acknowledgement HARQ-ACK information via the PUCCH, The DCI format includes a 1-bit field for requesting a PDSCH group, a field for a first PDSCH group identifier corresponding to the scheduled PDSCH, and a field indicating a timing K1 of HARQ feedback, When the value of the timing K1 is set to a numerical value and the value included in the 1-bit field is 0, the receiving unit receives the HARQ-ACK information corresponding to the PDSCH group of the first PDSCH group identifier, When the value of the timing K1 is set to a numerical value and the value included in the 1-bit field is 1, the receiving unit receives the HARQ-ACK information corresponding to the PDSCH group of the first PDSCH group identifier and the PDSCH group of the PDSCH group identifier different from the first PDSCH group identifier, When the value of the timing K1 is set to a non-numeric value, the receiving unit ignores the value included in the 1-bit field and receives HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format via the PUCCH.

3. A communication method for a terminal device, comprising: detecting a downlink control information DCI format and receiving a physical downlink shared channel PDSCH scheduled by the DCI format, Sending hybrid automatic repeat request positive acknowledgement HARQ-ACK information via PUCCH, The DCI format includes a 1-bit field for requesting a PDSCH group, a field for a first PDSCH group identifier corresponding to the scheduled PDSCH, and a field indicating a timing K1 of HARQ feedback, In a case where the value of the timing K1 is set to a numerical value and the value contained in the 1-bit field is 0, the HARQ-ACK information corresponds to the PDSCH group of the first PDSCH group identifier and is transmitted, In a case where the value of the timing K1 is set to a numerical value and the value contained in the 1-bit field is 1, the HARQ-ACK information corresponds to a PDSCH group of the first PDSCH group identifier and a PDSCH group of a PDSCH group identifier different from the first PDSCH group identifier, and is transmitted, In a case where the value of the timing K1 is set to a non-numeric value, the value included in the 1-bit field is ignored, and HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is transmitted via the PUCCH.

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