WO2021006334A1 - Terminal device, base station device, and communication method - Google Patents

Abstract

The present invention provides a terminal device for receiving a first PDSCH scheduled by a first DCI format and a second PDSCH scheduled by a second DCI format and transmitting (reporting), via a PUCCH or a PUSCH, HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH, wherein, when a condition is satisfied, a C-DAI value corresponding to the first PDSCH is set to a predetermined value, and when the condition is not satisfied, the C-DAI value corresponding to the first PDSCH is indicated by a C-DAI field of the first DCI format.

Description

Terminal equipment, base station equipment, and communication methods

The present invention relates to a terminal device, a base station device, and a communication method.
The present application claims priority with respect to Japanese Patent Application No. 2019-129116 filed in Japan on July 11, 2019, the contents of which are incorporated herein by reference.

Cellular mobile communication radio access scheme and a radio network (hereinafter, "Long Term Evolution (LTE)", or. Where: referred to as "EUTRA Evolved Universal Terrestrial Radio Access") is a third generation partnership project (3GPP: 3 ^rd Generation It is being considered in the Partnership Project). In LTE, the base station device is also called an eNodeB (evolved NodeB), and the terminal device is also called a UE (User Equipment). LTE is a cellular communication system in which a plurality of areas covered by a base station apparatus are arranged in a cell shape. A single base station device may manage multiple serving cells.

At 3GPP, the next-generation standard (NR: New Radio) will be examined in order to propose to IMT (International Mobile Telecommunication) -2020, which is the standard for next-generation mobile communication systems established by the International Telecommunication Union (ITU). (Non-Patent Document 1). NR is required to meet the requirements assuming three scenarios of eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication), and URLLC (UltraReliable and Low Latency Communication) within the framework of a single technology. ..

One aspect of the present invention provides a terminal device for efficient communication, a communication method used for the terminal device, a base station device for efficient communication, and a communication method used for the base station device.

(1) A first aspect of the present invention is a terminal device that receives a first PDSCH scheduled by a first DCI format and a second PDSCH scheduled by a second DCI format. When the condition is satisfied, the receiving unit is provided with a transmitting unit that transmits (reports) HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH via the PUCCH or the PUSCH. The C-DAI value corresponding to the first PDSCH is set to a predetermined value, and if the above conditions are not satisfied, the C-DAI value corresponding to the first PDSCH is the C-DAI value of the first DCI format. The condition 1 is indicated by the DAI field, the condition 1 is indicated by the K1 field of the DCI format included in the first DCI format, and the condition 2 is the first held in the terminal device. Includes a portion or all of the second NFI bit indicated by the second DCI format toggled relative to the value of the NFI bit in.

(2) A second aspect of the present invention is a base station apparatus that transmits a first PDSCH scheduled by a first DCI format and a second PDSCH scheduled by a second DCI format. A receiver that receives HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH via the PUCCH or the PUSCH, and if the condition is satisfied, the first The C-DAI value corresponding to the PDSCH of is set to a predetermined value, and if the above conditions are not satisfied, the C-DAI value corresponding to the first PDSCH is the C-DAI field of the first DCI format. The condition 1 is indicated by a non-numeric value of K1 by the K1 field of the DCI format included in the first DCI format, the condition 2 being compared to the value of the first NFI bit. The second NFI bit indicated by the second DCI format includes a part or all of the toggled.

(3) A third aspect of the present invention is a communication method used for a terminal device, the first PDSCH scheduled by the first DCI format, and the second scheduled by the second DCI format. When the PDSCH of the above is received, HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH is transmitted (reported) via the PUCCH or the PUSCH, and the conditions are satisfied, the first PDSCH The C-DAI value corresponding to the PDSCH is set to a predetermined value, and if the above conditions are not satisfied, the C-DAI value corresponding to the first PDSCH is determined by the C-DAI field of the first DCI format. As shown, the condition 1 is a non-numeric value of K1 indicated by the K1 field of the DCI format included in the first DCI format, and condition 2 is a first NFI bit held in the terminal device. Includes that the second NFI bit indicated by the second DCI format includes part or all of the toggled, as compared to the value of.

(4) A fourth aspect of the present invention is a communication method used for a base station apparatus, the first PDSCH scheduled by the first DCI format, and the second scheduled by the second DCI format. 2 PDSCHs are transmitted, HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH is received via the PUCCH or the PUSCH, and when the conditions are satisfied, the first PDSCH is sent. The corresponding C-DAI value is set to a predetermined value, and if the above conditions are not met, the C-DAI value corresponding to the first PDSCH is indicated by the C-DAI field of the first DCI format. In the condition 1, the non-numeric value of K1 is indicated by the K1 field of the DCI format included in the first DCI format, and the condition 2 is the second, as compared with the value of the first NFI bit. Includes that the second NFI bit indicated by the DCI format of is included, in part or in whole, toggled.

According to one aspect of the present invention, the terminal device can efficiently communicate. In addition, the base station device can efficiently perform communication.

It is a conceptual diagram of the wireless communication system which concerns on one aspect of this Embodiment. This is an example showing the relationship between the N ^slot _symb , the setting μ of the subcarrier interval, the slot setting, and the CP setting according to one aspect of the present embodiment. It is the schematic which shows an example of the resource grid in the subframe which concerns on one aspect of this Embodiment. It is a figure which shows an example of the monitoring opportunity of the search area set which concerns on one aspect of this Embodiment. It is a schematic block diagram which shows the structure of the terminal apparatus 1 which concerns on one aspect of this Embodiment. It is a schematic block diagram which shows the structure of the base station apparatus 3 which concerns on one aspect of this Embodiment. It is a figure which shows the correspondence example of the monitoring opportunity (Monitoring Occasion for search space set) of the search area set which concerns on one aspect of this Embodiment, and the monitoring opportunity (Monitoring Occasion for PDCCH) of PDCCH. It is a figure which shows the configuration example of the set of monitoring opportunities of PDCCH for slot n which concerns on one aspect of this Embodiment. It is a figure which shows an example of the procedure of the structure of the HARQ-ACK codebook which concerns on one aspect of this embodiment. It is a figure which shows an example of the procedure of the structure of the HARQ-ACK codebook which concerns on one aspect of this embodiment. It is a figure which shows an example of the procedure of the structure of the HARQ-ACK codebook which concerns on one aspect of this embodiment. It is a figure which shows an example of the report of HARQ-ACK information which concerns on one aspect of this Embodiment. It is a figure which shows an example of the report of HARQ-ACK information for the case where a certain PUCCH which concerns on one aspect of this Embodiment is detected. It is a figure which shows an example of the report of HARQ-ACK information in the case where a certain PUCCH which concerns on one aspect of this Embodiment is not detected.

Hereinafter, embodiments of the present invention will be described.

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

Ceil (A) is the ceiling function of A. ceil (A) may be a function that outputs the smallest integer within the range not less than A. log2 (B) is a logarithmic function with a base of 2 for B.

When a parameter or information indicates one or more values, the parameter or information may include at least a 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 be an information element (IE: Information Element) including a plurality of parameters.

FIG. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. In FIG. 1, the wireless communication system includes terminal devices 1A to 1C and a base station device 3. Hereinafter, the terminal devices 1A to 1C will also be referred to as a terminal device 1.

The base station device 3 may be configured to include one or both of the MCG (Master Cell Group) and the SCG (Secondary Cell Group). An MCG is a group of serving cells composed of at least a PCell (PrimaryCell). An SCG is a group of serving cells including at least a PSCell (Primary Secondary Cell). The PCell may be a serving cell given based on the initial connection. The MCG may be configured to include one or more SCells (Secondary Cells). The SCG may be configured to include one or more SCells. The serving cell identity is a short identifier for identifying a serving cell. The serving cell identifier may be given by an upper layer parameter.

The frame configuration will be described below.

At least OFDM (Orthogonal Frequency Division Multiplex) is used in the wireless communication system according to one aspect of the present embodiment. The OFDM symbol is a unit of the OFDM time domain. The OFDM symbol comprises at least one or more subcarriers. The OFDM symbol may be converted into a time-continuous signal in the baseband signal generation.

The subcarrier spacing (SCS: SubCarrier Spacing) may be given by the subcarrier spacing Δf = 2 ^μ · 15 kHz. For example, the subcarrier spacing configuration μ may be set to any of 0, 1, 2, 3, 4, and / or 5. For a BWP (BandWidth Part), the subcarrier spacing setting μ may be given by the upper layer parameters.

In the wireless communication system according to one aspect of the present embodiment, a time unit (time unit) T _c is used to express the length of the time domain. The time unit T _c may be given by T _c = 1 / (Δf _max · N _f ). Δf _max may be the maximum value of the subcarrier spacing supported in the wireless communication system according to one aspect of the present embodiment. Δf _max may be Δf _max = 480 kHz. N _f may be N _f = 4096. The constant κ is κ = Δf _max · N _f / (Δf _ref N _{f, ref} ) = 64. Δf _ref may be 15 kHz. N _{f and ref} may be 2048.

The constant κ may be a value indicating the relationship between the reference subcarrier interval and T _c . The constant κ may be used for the length of the subframe. The number of slots contained in the subframe may be given, at least based on the constant κ. Δf _ref is the reference subcarrier interval, and N _{f and ref} are values corresponding to the reference subcarrier interval.

The transmission on the downlink and / or the transmission on 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 frame length may be given regardless of the subcarrier spacing Δf. That is, the frame setting may be given regardless of μ. The length of the subframe may be given regardless of the subcarrier spacing Δf. That is, the subframe setting may be given regardless of μ.

The number and index of slots contained in a subframe may be given for the setting μ of a subcarrier spacing. For example, the first slot number n ^μ _s may be given in ascending order in the range of 0 to N ^{subframe, μ} _slot -1 within the ^subframe . The number and index of slots contained in the frame may be given for the setting μ of the subcarrier spacing. For example, the second slot numbers n ^μ _{s, f} may be given in ascending order in the range of 0 to N ^{frame, μ} _slot -1 in the ^frame . One slot may contain consecutive N ^slot _symbs of OFDM symbols. The N ^slot _symb may be given at least based on some or all of the slot configuration and / or the CP (Cyclic Prefix) setting. The slot setting may be given by at least the upper layer parameter tdd-UL-DL-ConfigurationCommon. CP settings may be given at least based on upper layer parameters. CP settings may be given at least based on dedicated RRC signaling. The first slot number and the second slot number are also referred to as slot numbers (slot indexes).

FIG. 2 is an example showing the relationship between the N ^slot _symb , the setting μ of the subcarrier interval, and the CP setting according to one aspect of the present embodiment. In FIG. 2A, for example, when the subcarrier interval setting μ is 2 and the CP setting is normal CP (normal cyclic prefix), N ^slot _symb = 14, N ^{frame, μ} _slot = 40, N ^{subframe, μ} _slot. = 4. Further, in FIG. 2B, for example, when the subcarrier interval setting μ is 2 and the CP setting is an extended CP (extended cyclic prefix), N ^slot _simb = 12, N ^{frame, μ} _slot = 40, N ^{subframe, μ} _slot = 4.

The physical resources will be explained below.

An antenna port is defined by the fact that the channel through which a symbol is transmitted in one antenna port can be estimated from the channel through which another symbol is transmitted in the same antenna port. If the large scale property of the channel on which the symbol is transmitted in one antenna port can be estimated from the channel in which the symbol is transmitted in the other antenna port, the two antenna ports are QCL (Quasi Co-Located). ) Is called. Large scale characteristics may include at least the long interval characteristics of the channel. Large-scale characteristics are delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay), and beam parameters (spatial Rx parameters). It may include at least some or all. The fact that the first antenna port and the second antenna port are QCL with respect to the beam parameters means that the receiving beam assumed by the receiving side with respect to the first antenna port and the receiving beam assumed by the receiving side with respect to the second antenna port. May be the same. The fact that the first antenna port and the second antenna port are QCL with respect to the beam parameters means that the transmitting beam assumed by the receiving side with respect to the first antenna port and the transmitting beam assumed by the receiving side with respect to the second antenna port. May be the same. The terminal device 1 assumes that the two antenna ports are QCLs when the large-scale characteristics of the channel through which the symbol is transmitted in one antenna port can be estimated from the channel in which the symbol is transmitted in the other antenna port. May be done. The fact that the two antenna ports are QCLs may mean that the two antenna ports are QCLs.

A resource grid of N ^μ _{RB, x} N ^RB _sc subcarriers and N ^(μ) _simb N ^{subframe, μ} _symb OFDM symbols is provided for each subcarrier spacing setting and carrier set. N ^μ _{RB, x} may indicate the number of resource blocks given for setting the subcarrier spacing μ for carrier x. N ^μ _{RB, x} may be the maximum number of resource blocks given for setting the subcarrier spacing μ for carrier x. The carrier x indicates either a downlink carrier or an uplink carrier. That is, x is "DL" or "UL". N ^μ _RB is a name that includes N ^μ _{RB, DL} , and / or N ^μ _{RB, UL} . ^NRB _sc may indicate the number of subcarriers contained in one resource block. At least one resource grid may be provided for each antenna port p and / or for each subcarrier spacing setting μ and / or for each transmission direction setting. The transmission direction includes at least a downlink (DL: DownLink) and an uplink (UL: UpLink). Hereinafter, a set of parameters including at least a part or all of the antenna port p, the subcarrier interval setting μ, and the transmission direction setting is also referred to as a first radio parameter set. That is, one resource grid may be given for each first set of radio parameters.

In the downlink, the carrier included in the serving cell is referred to as a downlink carrier (or downlink component carrier). In the uplink, the carrier included in the serving cell is referred to as 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).

Each element in the resource grid given for each first set of radio parameters is referred to as a resource element. The resource element is specified by the frequency domain index k _sc and the time domain index l _sym . For a first set of radio parameters, resource elements are identified by a frequency domain index k _sc and a time domain index l _sym . The resource element specified by the frequency domain index k _sc and the time domain index l _sym is also referred to as a resource element (k _sc , l _sym ). The frequency domain index k _sc indicates any value from 0 to N ^μ _RB N ^RB _sc -1. N ^μ _RB may be the number of resource blocks given for setting the subcarrier spacing μ. N ^RB _sc is the number of subcarriers included in the resource block, and N ^RB _sc = 12. The frequency domain index k _sc may correspond to the subcarrier index k _sc . The time domain index l _sym may correspond to the OFDM symbol index l _sym .

FIG. 3 is a schematic view showing an example of a resource grid in the subframe according to one aspect of the present embodiment. In the resource grid of FIG. 3, the horizontal axis is the time domain index l _sym , and the vertical axis is the frequency domain index k _sc . In one subframe, the frequency domain of the resource grid contains N ^μ _RB N ^RB _sc subcarriers. In one subframe, the time domain of the resource grid may contain 14.2 ^μ OFDM symbols. One resource block ^is configured to include ^N _{RB sc} subcarriers. The time domain of the resource block may correspond to a 1 OFDM symbol. The time domain of the resource block may correspond to 14 OFDM symbols. The time domain of the resource block may correspond to one or more slots. The time domain of the resource block may correspond to one subframe.

The terminal device 1 may be instructed to perform transmission / reception using only a subset of the resource grid. A subset of the resource grid, also referred to as BWP, may be given based on at least some or all of the upper layer parameters and / or DCI. BWP is also called a band part (BP: bandwidth part). That is, the terminal device 1 may not be instructed to perform transmission / reception using the entire set of resource grids. That is, the terminal device 1 may be instructed to perform transmission / reception using a part of the frequency resources in the resource grid. One BWP may be composed of a plurality of resource blocks in the frequency domain. One BWP may be composed of a plurality of continuous resource blocks in the frequency region. The BWP set for the downlink carrier is also referred to as the downlink BWP. The BWP set for the uplink carrier is also referred to as an uplink BWP.

One or more downlink BWPs may be set for the terminal device 1. The terminal device 1 may attempt to receive a physical channel (eg, PDCCH, PDSCH, SS / PBCH, etc.) on one of the downlink BWPs of one or more downlinks BWP. The one downlink BWP is also referred to as an activated downlink BWP.

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 of the uplink BWPs of one or more uplinks BWP. The one uplink BWP is also referred to as an activated uplink BWP.

A set of downlink BWP may be set for each of the serving cells. A set of downlink BWPs may include one or more downlink BWPs. A set of uplink BWPs may be set for each of the serving cells. A set of uplink BWPs may include one or more uplink BWPs.

The upper layer parameter is a parameter included in the signal of the upper layer. The upper layer signal may be RRC (RadioResourceControl) signaling or MAC CE (MediumAccessControlControlElement). Here, the signal of the upper layer may be a signal of the RRC layer or a signal of the MAC layer.

The signal of the upper layer may be common RRC signaling. The common RRC signaling may include at least some or all of the following features C1 to C3.
Feature C1) Map to BCCH logical channel or CCCH logical channel Feature C2) Map to radioRelocationConfigCommon information element C3) Map to PBCH

The radioResourceConfigCommon information element may include information indicating a setting commonly used in the serving cell. The settings commonly used in the serving cell may include at least the PRACH setting. The PRACH setting may indicate at least one or more random access preamble indexes. The PRACH setting may indicate at least the PRACH time / frequency resources.

The signal of the upper layer may be dedicated RRC signaling. Dedicated RRC signaling may include at least some or all of the following features D1 to D2.
Feature D1) Features mapped to DCCH logical channels D2) Includes at least a radioResourceControlDedicated information element

The radioResourceConfigDedicated information element may include at least information indicating a setting unique to the terminal device 1. The radioResourceControlDedicated information element may include at least information indicating the setting of the BWP. The BWP settings may at least indicate the frequency resources of the BWP.

For example, the MIB, the first system information, and the second system information may be included in the common RRC signaling. In addition, upper layer messages that are mapped to DCCH logical channels and that include at least radioResourceConfigCommon may be included in the common RRC signaling. Further, the upper layer message that is mapped to the DCCH logical channel and does not include the radioResourceConfigCommon information element may be included in the dedicated RRC signaling. Further, an upper layer message that is mapped to a DCCH logical channel and contains at least a radioResourceControlDedicated information element may be included in the dedicated RRC signaling.

The first system information may at least indicate the time index of the SS (Synchronization Signal) block. The SS block is also referred to as an SS / PBCH block (SS / PBCH block). The SS / PBCH block is also referred to as SS / PBCH. The first system information may include at least information related to the PRACH resource. The first system information may include at least information related to the initial connection settings. The second system information may be system information other than the first system information.

The radioResourceControlDedicated information element may include at least information related to the PRACH resource. The radioResourceConfigDedicated information element may include at least information related to the initial connection settings.

Hereinafter, physical channels and physical signals according to various aspects of the present embodiment will be described.

The uplink physical channel may correspond to a set of resource elements that carry information that occurs in the upper layers. The uplink physical channel is a physical channel used in the uplink carrier. In the wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical channels are used.
・ PUCCH (Physical Uplink Control CHannel)
・ PUSCH (Physical Uplink Shared CHannel)
・ PRACH (Physical Random Access CHannel)

PUCCH may be used to transmit uplink control information (UCI: Uplink Control Information). Uplink control information includes channel state information (CSI: Channel State Information), scheduling request (SR: Scheduling Request), transport block (TB: Transport block, MAC PDU: Medium Access Control Protocol Data Unit, DL-SCH: Downlink). -Includes part or all of HARQ-ACK (Hybrid Automatic Repeat request ACK knowledge) corresponding to Shared Channel, PDSCH: Physical Downlink Shared Channel).

The HARQ-ACK information may include at least the HARQ-ACK bits corresponding to one transport block. The HARQ-ACK bit may indicate ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to one or more transport blocks. The HARQ-ACK information may include at least a HARQ-ACK codebook containing one or more HARQ-ACK bits. The fact that the HARQ-ACK bit corresponds to one or more transport blocks may mean that the HARQ-ACK bit corresponds to a PDSCH containing the one or more transport blocks. The HARQ-ACK bit may indicate ACK or NACK corresponding to one CBG (Code Block Group) included in the transport block.

A scheduling request (SR: Scheduling Request) may be at least used to request PUSCH resources for initial transmission. The scheduling request bit may be used to indicate either a positive SR (positive SR) or a negative SR (negative SR). The fact that the scheduling request bit indicates a positive SR is also referred to as "a positive SR is transmitted". A positive SR may indicate that the terminal device 1 requires a PUSCH resource for initial transmission. A positive SR may indicate that the scheduling request is Triggered by the upper layer. A positive SR may be sent when the upper layer instructs it to send a scheduling request. The fact that the scheduling request bit indicates a negative SR is also referred to as "a negative SR is transmitted". A negative SR may indicate that the terminal device 1 does not require PUSCH resources for initial transmission. A negative SR may indicate that the scheduling request is not triggered by the upper layer. Negative SR may be transmitted if the upper layer does not instruct it to transmit the scheduling request.

The channel state information may include at least a part or all of a channel quality index (CQI: Channel Quality Indicator), a precoder matrix index (PMI: Precoder Matrix Indicator), and a rank index (RI: Rank Indicator). CQI is an index related to channel quality (for example, propagation intensity), and PMI is an index indicating a precoder. RI is an index that indicates the transmission rank (or the number of transmission layers).

PUCCH supports PUCCH format (PUCCH format 0 to PUCCH format 4). The PUCCH format may be mapped to the PUCCH and transmitted. The PUCCH format may be transmitted in PUCCH. The transmission of the PUCCH format may mean that the PUCCH is transmitted.

PUSCH is at least used to transmit transport blocks (TB, MAC PDU, UL-SCH, PUSCH). The PUSCH may be used to transmit at least some or all of the transport blocks, HARQ-ACK information, channel state information, and scheduling requests. PUSCH is at least used to send the random access message 3.

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

In FIG. 1, the following uplink physical signals are used in uplink wireless communication. The uplink physical signal does not have to be used to transmit the information output from the upper layer, but it is used by the physical layer.
・ UL DMRS (UpLink Demodulation Reference Signal)
・ SRS (Sounding Reference Signal)
・ UL PTRS (UpLink Phase Tracking Reference Signal)

UL DMRS is associated with PUSCH and / or PUCCH transmission. UL DMRS is multiplexed with PUSCH or PUCCH. The base station apparatus 3 may use UL DMRS to correct the propagation path of PUSCH or PUCCH. Hereinafter, transmitting both PUSCH and UL DMRS related to the PUSCH is referred to simply as transmitting the PUSCH. Hereinafter, transmitting PUCCH and UL DMRS related to the PUCCH together is referred to simply as transmitting PUCCH. UL DMRS related to PUSCH is also referred to as UL DMRS for PUSCH. UL DMRS related to PUCCH is also referred to as UL DMRS for PUCCH.

SRS does not have to be related to PUSCH or PUCCH transmission. The base station apparatus 3 may use SRS for measuring the channel state. The SRS may be transmitted at the end of the subframe in the uplink slot, or at a predetermined number of OFDM symbols from the end.

UL PTRS may be at least a reference signal used for phase tracking. The UL PTRS may be associated with a UL DMRS group that includes at least the antenna ports used for one or more UL DMRS. The association between the UL PTRS and the UL DMRS group may be that the antenna port of the UL PTRS and a part or all of the antenna ports included in the UL DMRS group are at least QCL. The UL DMRS group may be identified at least based on the antenna port with the smallest index in the UL DMRS included in the UL DMRS group. UL PTRS may be mapped to the antenna port with the smallest index in one or more antenna ports to which one codeword is mapped. UL PTRS may be mapped to the first layer if one codeword is at least mapped to the first layer and the second layer. UL PTRS does not have to be mapped to the second layer. The index of the antenna port to which the UL PTRS is mapped may be given at least based on the downlink control information.

In FIG. 1, the following downlink physical channels are used in the downlink wireless communication from the base station device 3 to the terminal device 1. The downlink physical channel is used by the physical layer to transmit the information output from the upper layer.
・ PBCH (Physical Broadcast Channel)
・ PDCCH (Physical Downlink Control Channel)
・ PDSCH (Physical Downlink Shared Channel)

PBCH is at least used to transmit a master information block (MIB: Master Information Block, BCH, Broadcast Channel). The PBCH may be transmitted based on a predetermined transmission interval. PBCH may be transmitted at intervals of 80 ms. PBCH may be transmitted at intervals of 160 ms. The content of the information contained in the PBCH may be updated every 80 ms. Some or all of the information contained in the PBCH may be updated every 160 ms. The PBCH may be composed of 288 subcarriers. The PBCH may be configured to include 2, 3, or 4 OFDM symbols. The MIB may include information related to the identifier (index) of the synchronization signal. The MIB may include information indicating at least a portion of the slot number, subframe number, and / or radio frame number through which the PBCH is transmitted.

PDCCH is at least used for the transmission of downlink control information (DCI). The PDCCH may be transmitted including at least downlink control information. The PDCCH may include downlink control information. The downlink control information is also referred to as DCI format. The downlink control information may include at least either a downlink grant or an uplink grant. The DCI format used for PDSCH scheduling is also referred to as the downlink DCI format. The DCI format used for PUSCH scheduling is also referred to as the uplink DCI format. Downlink grants are also referred to as downlink assignments or downlink allocations. The uplink DCI format includes at least one or both of DCI format 0_0 and DCI format 0_1.

The DCI format 0_0 comprises at least a part or all of 1A to 1E.
1A) Identifier for DCI formats field
1B) Frequency domain resource allocation field
1C) Time domain resource allocation field
1D) Frequency hopping flag field
1E) MCS field (MCS field: Modulation and Coding Scheme field)

The DCI format specific field may be at least used to indicate whether the DCI format including the DCI format specific field corresponds to one or more DCI formats. The one or more DCI formats may be given at least on the basis of DCI format 1_1, DCI format 1-11, DCI format 0_0, and / or part or all of DCI format 0_1.

The frequency domain resource allocation field may at least be used to indicate the allocation of frequency resources for the PUSCH scheduled by the DCI format that includes the frequency domain resource allocation field. The frequency domain resource allocation field is also referred to as an FDRA (Frequency Domain Resource Allocation) field.

The time domain resource allocation field may at least be used to indicate the allocation of time resources for the PUSCH scheduled by the DCI format that includes the time domain resource allocation field.

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

The MCS field may be at least used to indicate a modulation scheme for PUSCH scheduled by the DCI format containing the MCS field and / or part or all of the target code rate. The target code rate may be the target code rate for the transport block of the PUSCH. The size of the transport block (TBS: Transport Block Size) may be given at least based on the target code rate.

DCI format 0-1 is configured to include at least part or all of 2A to 2I.
2A) DCI format specific field 2B) Frequency domain resource allocation field 2C) Time domain resource allocation field 2D) Frequency hopping flag field 2E) MCS field 2F) CSI request field
2G) BWP field
2H) first UL DAI field (1 ^st downlink assignment index)
2I) the second of UL DAI field (2 ^nd downlink assignment index)

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

The second UL DAI field is at least used to indicate the transmission status of the PDSCH. When a dynamic HARQ-ACK codebook containing two sub-codebooks is used, the size of the second UL DAI field may be 2 bits.

The BWP field may be used to indicate the uplink BWP to which the PUSCH scheduled in DCI format 0_1 is mapped.

The CSI request field is at least used to direct CSI reporting. The size of the CSI request field may be given at least based on the upper layer parameter ReportTriggerSize.

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

DCI format 1_0 is configured to include at least part or all of 3A to 3L.
3A) Identifier for DCI formats field
3B) Frequency domain resource allocation field
3C) Time domain resource allocation field
3D) Frequency hopping flag field
3E) MCS field (MCS field: Modulation and Coding Scheme field)
3F) First CSI request field
3G) PDSCH-to-HARQ feedback timing indicator field
3H) PUCCH resource indicator field
3I) First PGI field (first PDSCH Group Indicator field)
3J) First New Feedback Indicator field
3K) First Requested PDSCH Group Indicator field
3L) First DAI field (first Downlink Assignment Index field)

The timing instruction field from PDSCH to HARQ feedback may be a field indicating timing K1. When the index of the slot containing the last OFDM symbol of the PDSCH is slot n, the index of the PUCCH containing at least the HARQ-ACK information corresponding to the transport block contained in the PDSCH or the slot containing the PUSCH is n + K1. You may. When the index of the slot containing the last OFDM symbol of the PDSCH is slot n, the first OFDM symbol of the PUCCH or the first OFDM symbol of the PUSCH containing at least the HARQ-ACK information corresponding to the transport block contained in the PDSCH. The index of the slot containing is may be n + K1.

Hereinafter, the PDSCH-to-HARQ feedback timing indicator field (PDSCH-to-HARQ_feedback timing indicator field) may be referred to as a HARQ instruction field.

The PUCCH resource instruction field may be a field indicating the index of one or more PUCCH resources included in the PUCCH resource set.

Details of the first PGI field, the first NFI field, the first RPGI field, and the first DAI field will be described later.

DCI format 1_1 is configured to include at least some or all of 4A to 4N.
4A) Identifier for DCI formats field
4B) Frequency domain resource allocation field
4C) Time domain resource allocation field
4D) Frequency hopping flag field
4E) MCS field (MCS field: Modulation and Coding Scheme field)
4F) First CSI request field
4G) PDSCH-to-HARQ feedback timing indicator field
4H) PUCCH resource indicator field
4J) BWP field
4K) Second PGI field (second PDSCH Group Indicator field)
4L) Second NFI field (second New Feedback Indicator field)
4M) Second Requested PDSCH Group Indicator field
4N) Second Downlink Assignment Index field

The BWP field may be used to indicate the downlink BWP to which the PDSCH scheduled in DCI format 1-11 is mapped.

A description of the second PGI field, the second NFI field, the second RPGI field, and the second DAI field will be described later.

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

Each DCI format (DCI format 1_1, DCI format 1-11, DCI format 0_0, and / or DCI format 0_1 DCI format 1-11) may include a field different from the above-mentioned fields.

In various aspects of this embodiment, unless otherwise specified, the number of resource blocks indicates the number of resource blocks in the frequency domain.

The downlink grant is at least used for scheduling one PDSCH in one serving cell.

Uplink grants are at least used for scheduling one PUSCH in one serving cell.

One physical channel may be mapped to one serving cell. One physical channel may be mapped to one BWP set for one carrier contained in one serving cell.

One or more control resource sets (CORESET: COntrol REsource SET) may be set in the terminal device 1. Terminal device 1 monitors 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 each of one or more control resource sets. The PDCCH may include one or more sets of PDCCH candidates and / or PDCCH candidates. Monitoring the PDCCH may also include monitoring and detecting the PDCCH and / or the DCI format transmitted via the PDCCH.

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

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

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

The number of OFDM symbols that make up the control resource set may be given at least based on the upper layer parameters.

A certain control resource set may be a common control resource set (Common control resource set). The common control resource set may be a control resource set that is commonly set for a plurality of terminal devices 1. The common control resource set may be given at least based on the MIB, the first system information, the second system information, the common RRC signaling, and some or all of the cell IDs. For example, the time and / or frequency resources of the control resource set set to monitor the PDCCH used for scheduling the first system information may be given at least based on the MIB.

The control resource set set in the MIB is also called CORESET # 0. CORESET # 0 may be a control resource set at index # 0.

A certain control resource set may be a dedicated control resource set (Dedicated control resource set). The dedicated control resource set may be a control resource set that is set to be used exclusively for the terminal device 1. The dedicated control resource set may be given based on at least some or all of the dedicated RRC signaling and C-RNTI values. A plurality of control resource sets may be configured in the terminal device 1, and an index (control resource set index) may be assigned to each control resource set. One or more control channel elements (CCE) may be configured in the control resource set, and an index (CCE index) may be assigned to each CCE.

The set of PDCCH candidates monitored by the terminal device 1 may be defined from the viewpoint of the search area. That is, the set of PDCCH candidates monitored by the terminal device 1 may be given by the search area.

The search area may be configured to include one or more PDCCH candidates of one or more aggregation levels (Aggregation level). The aggregation level of PDCCH candidates may indicate the number of CCEs constituting the PDCCH. PDDCH candidates may be mapped to one or more CCEs.

The terminal device 1 may monitor at least one or a plurality of search areas in a slot in which DRX (Discontinuous reception) is not set. DRX may be given at least based on upper layer parameters. The terminal device 1 may monitor at least one or a plurality of search area sets (Search space sets) in slots in which DRX is not set. A plurality of search area sets may be configured in the terminal device 1. An index (search area set index) may be assigned to each search area set.

The search area set may be configured to include at least one or a plurality of search areas. An index (search area index) may be assigned to each search area.

Each of the search area sets may be associated with at least one control resource set. Each of the search area sets may be included in one control resource set. For each of the search area sets, an index of the control resource set associated with the search area set may be given.

The monitoring interval (Monitoring periodicity) of the search area set may be set for each of the search area sets. The monitoring interval of the search area set may indicate at least the interval of the slots in which the search area set is monitored by the terminal device 1. Upper layer parameters indicating at least the monitoring interval of the search area set may be given for each search area set.

The monitoring offset of the search area set may be set for each of the search area sets. The monitoring offset of the search area set may at least indicate an offset from the reference index (for example, slot # 0) of the index of the slot in which the terminal device 1 monitors the search area set. Upper layer parameters indicating at least the monitoring offset of the search area set may be given for each search area set.

A monitoring pattern of the search area set may be set for each of the search area sets. The monitoring pattern of the search area set may indicate the leading OFDM symbol for the search area set in which monitoring is performed. The monitoring pattern of the search region set may be given by a bitmap showing the leading OFDM symbol in one or more slots. Upper layer parameters indicating at least the monitoring pattern of the search area set may be given for each search area set.

The monitoring occurrence of the search area set is given based on at least some or all of the search 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 settings. You may.

FIG. 4 is a diagram showing an example of a monitoring opportunity of the search area set according to one aspect of the present embodiment. In FIG. 4, the search area set 91 and the search area set 92 are set in the primary cell 301, the search area set 93 is set in the secondary cell 302, and the search area set 94 is set in the secondary cell 303.

In FIG. 4, the blocks indicated by the grid lines indicate the search area set 91, the blocks indicated by the upward-sloping diagonal line indicate the search area set 92, and the blocks indicated by the upward-left diagonal line indicate the search area set 93, which are indicated by horizontal lines. The blocks shown show the search area set 94.

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

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

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

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

The physical resources in the search area are composed of control channel configuration units (CCE: Control Channel Element). CCE is composed of a predetermined number of resource element groups (REG: ResourceElementGroup). For example, CCE may consist of 6 REGs. The REG may be composed of 1 OFDM symbol of one PRB (Physical Resource Block). That is, the REG may be configured to include 12 resource elements (RE: ResourceElement). PRB is also simply referred to as RB (Resource Block).

PDSCH is at least used to transmit transport blocks. The PDSCH may at least be used to send a random access message 2 (random access response). The PDSCH may at least be used to transmit system information, including parameters used for initial access.

In FIG. 1, the following downlink physical signals are used in downlink wireless communication. The downlink physical signal does not have to be used to transmit the information output from the upper layer, but it is used by the physical layer.
-Synchronization signal (SS)
・ DL DMRS (DownLink DeModulation Reference Signal)
・ CSI-RS (Channel State Information-Reference Signal)
・ DL PTRS (DownLink Phase Tracking Reference Signal)

The synchronization signal is used by the terminal device 1 to synchronize the downlink frequency domain and / or the time domain. The synchronization signal includes PSS (PrimarySynchronizationSignal) and SSS (SecondarySynchronizationSignal).

The SS block (SS / PBCH block) is composed of PSS, SSS, and at least a part or all of PBCH.

DL DMRS is associated with the transmission of PBCH, PDCCH, and / or PDSCH. DL DMRS is multiplexed on PBCH, PDCCH, and / or PDSCH. The terminal device 1 may use the PBCH, the PDCCH, or the DL DMRS corresponding to the PDSCH in order to correct the propagation path of the PBCH, PDCCH, or PDSCH.

CSI-RS may be at least a signal used to calculate channel state information. The pattern of CSI-RS assumed by the terminal device may be given by at least the upper layer parameters.

The PTRS may be at least a signal used to compensate for phase noise. The pattern of PTRS envisioned by the terminal device may be given at least based on the upper layer parameters and / or DCI.

The DL PTRS may be associated with a DL DMRS group that includes at least the antenna ports used for one or more DL DMRSs.

The downlink physical channel and the downlink physical signal are also referred to as a downlink physical signal. Uplink physical channels and uplink physical signals are also referred to as uplink signals. The downlink signal and the uplink signal are also collectively referred to as a physical signal. The downlink signal and the uplink signal are also collectively referred to as a signal. The downlink physical channel and the uplink physical channel are collectively referred to as a physical channel. The downlink physical signal and the uplink physical signal are collectively referred to as a physical signal.

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

The base station device 3 and the terminal device 1 exchange (transmit / receive) signals of the upper layer in the upper layer. For example, the base station device 3 and the terminal device 1 may send and receive RRC signaling (RRC message: Radio Resource Control message; RRC information: Radio Resource Control information) in the radio resource control (RRC: Radio Resource Control) layer. .. Further, the base station device 3 and the terminal device 1 may transmit and receive MAC CE (Control Element) in the MAC layer. Here, RRC signaling and / or MAC CE is also referred to as higher layer signaling.

PUSCH and PDSCH may at least be used to transmit RRC signaling and / or MAC CE. Here, the RRC signaling transmitted from the base station device 3 by PDSCH may be a signal common to a plurality of terminal devices 1 in the serving cell. Signaling common to a plurality of terminal devices 1 in a serving cell is also referred to as common RRC signaling. The RRC signaling transmitted from the base station apparatus 3 by PDSCH may be a dedicated signaling (also referred to as dedicated signaling or UE specific signaling) for a certain terminal apparatus 1. Signaling dedicated to the terminal device 1 is also referred to as dedicated RRC signaling. The upper layer parameters unique to the serving cell may be transmitted using common signaling to a plurality of terminal devices 1 in the serving cell, or using dedicated signaling to a certain terminal device 1. UE-specific upper layer parameters may be transmitted to a terminal device 1 using dedicated signaling.

BCCH (Broadcast Control CHannel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is an upper layer channel used to transmit MIBs. Further, CCCH (Common Control CHannel) is an upper layer channel used for transmitting common information in a plurality of terminal devices 1. Here, CCCH may be used, for example, for a terminal device 1 that is not RRC-connected. Further, the DCCH (Dedicated Control Channel) is an upper layer channel that is at least used for transmitting dedicated control information to the terminal device 1. Here, the DCCH may be used, for example, for the terminal device 1 connected by RRC.

BCCH in a logical channel may be mapped to BCH, DL-SCH, or UL-SCH in a transport channel. CCCH in a logical channel may be mapped to DL-SCH or UL-SCH in a transport channel. DCCH in a logical channel may be mapped to DL-SCH or UL-SCH in a transport channel.

UL-SCH in the transport channel may be mapped to PUSCH in the physical channel. The DL-SCH in the transport channel may be mapped to the PDSCH in the physical channel. BCH in the transport channel may be mapped to PBCH in the physical channel.

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

FIG. 5 is a schematic block diagram showing the configuration of the terminal device 1 according to one aspect of the present embodiment. As shown in the figure, the terminal device 1 includes a wireless transmission / reception unit 10 and an upper layer processing unit 14. The radio transmission / reception unit 10 includes 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 includes at least a part or all of the medium access control layer processing unit 15 and the radio resource control layer processing unit 16. The wireless transmission / reception unit 10 may be configured to include at least a transmission unit and a part or all of the reception unit.

The upper layer processing unit 14 outputs the uplink data (transport block) generated by the user's operation or the like to the wireless transmission / reception unit 10. The upper layer processing unit 14 processes the MAC layer, the packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, the wireless link control (RLC: Radio Link Control) layer, and the RRC layer.

The medium access control layer processing unit 15 included in the upper layer processing unit 14 processes the MAC layer.

The radio resource control layer processing unit 16 included in the upper layer processing unit 14 processes the RRC layer. The wireless resource control layer processing unit 16 manages various setting information / parameters of its own device. The radio resource control layer processing unit 16 sets various setting information / parameters based on the signal of the upper layer received from the base station apparatus 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 apparatus 3. The setting information may include information related to processing or setting of a physical channel, a physical signal (that is, a physical layer), a MAC layer, a PDCP layer, an RLC layer, and an RRC layer. The parameter may be an upper layer parameter.

The wireless transmission / reception unit 10 performs physical layer processing such as modulation, demodulation, coding, and decoding. The wireless transmission / reception unit 10 separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. The wireless transmission / reception unit 10 generates a physical signal by modulating, encoding, and generating a baseband signal (converting to a time continuous signal), and transmits the physical signal to the base station apparatus 3.

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

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 CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT) on the signal from which the CP has been removed, and outputs a signal in the frequency domain. Extract.

The baseband unit 13 performs inverse fast Fourier transform (IFFT) on the data to generate an OFDM symbol, adds CP to the generated OFDM symbol, generates a baseband digital signal, and basebands the data. Converts a band digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

The RF unit 12 removes an extra frequency component from the analog signal input from the baseband unit 13 using a low-pass filter, upconverts the analog signal to the carrier frequency, and transmits the analog signal via the antenna unit 11. To do. Further, the RF unit 12 amplifies the electric power. Further, the RF unit 12 may have a function of controlling the transmission power. The RF unit 12 is also referred to as a transmission power control unit.

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

FIG. 6 is a schematic block diagram showing the configuration of the base station device 3 according to one aspect of the present embodiment. As shown in the figure, the base station apparatus 3 includes a wireless transmission / reception unit 30 and an upper layer processing unit 34. The radio transmission / reception unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33. The upper layer processing unit 34 includes a medium access control layer processing unit 35 and a radio resource control layer processing unit 36. The wireless transmission / reception unit 30 may be configured to include at least a transmission unit and a part or all of the reception unit.

The upper layer processing unit 34 processes the MAC layer, PDCP layer, RLC layer, and RRC layer.

The medium access control layer processing unit 35 included in the upper layer processing unit 34 processes the MAC layer.

The radio resource control layer processing unit 36 included in the upper layer processing unit 34 processes the RRC layer. The wireless resource control layer processing unit 36 generates downlink data (transport block), system information, RRC message, MAC CE, etc. arranged in the PDSCH, or acquires them from a higher-level node and outputs them to the wireless transmission / reception unit 30. .. Further, 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 may set various setting information / parameters for each terminal device 1 via a signal of the upper layer. That is, the radio resource control layer processing unit 36 transmits / notifies information indicating various setting information / parameters. The setting information may include information related to processing or setting of a physical channel, a physical signal (that is, a physical layer), a MAC layer, a PDCP layer, an RLC layer, and an RRC layer. The parameter may be an upper layer parameter.

Since the function of the wireless transmission / reception unit 30 is the same as that of the wireless transmission / reception unit 10, the description thereof will be omitted.

Each part of the terminal device 1 with reference numerals 10 to 16 may be configured as a circuit. Each portion of the base station apparatus 3 with reference numerals 30 to 36 may be configured as a circuit.

The terminal device 1 may carry out carrier sense prior to transmission of the physical signal. Further, the base station apparatus 3 may perform carrier sense prior to the transmission of the physical signal. The carrier sense may be to carry out energy detection on a radio channel. Whether or not the physical signal can be transmitted may be given based on the carrier sense performed prior to the transmission of the physical signal. For example, if the amount of energy detected by the carrier sense performed prior to the transmission of the physical signal is greater than a predetermined threshold, the physical channel may not be transmitted or cannot be transmitted. May be determined. Further, when the amount of energy detected by the carrier sense performed prior to the transmission of the physical signal is smaller than a predetermined threshold value, the physical channel may be transmitted or can be transmitted. It may be judged. Further, when the amount of energy detected by the carrier sense performed prior to the transmission of the physical signal is equal to a predetermined threshold value, the transmission of the physical channel may or may not be performed. .. That is, when the amount of energy detected by the carrier sense performed prior to the transmission of the physical signal is equal to a predetermined threshold value, it may be determined that the transmission is impossible or the transmission is possible. Good.

The procedure in which the transmission availability of the physical channel is given based on the carrier sense is also called LBT (Listen Before Talk). The situation in which it is determined that the physical signal cannot be transmitted as a result of the LBT is also referred to as a busy state or a busy state. For example, the busy state may be a state in which the amount of energy detected by carrier sense is larger than a predetermined threshold value. Further, the situation in which it is determined that the physical signal can be transmitted as a result of LBT is also referred to as an idle state or an idle. For example, the idle state may be a state in which the amount of energy detected by carrier sense is smaller than a predetermined threshold value.

In a certain component carrier, NR-U (New Radio --Unlicensed) may be applied. In some serving cells, NR-U may be applied. The application of NR-U in a component carrier (or a serving cell) may include at least a technique (framework, configuration) that includes some or all of the following elements A1 to A6.
Element A1: The second SS burst set is configured in the component carrier (or the serving cell) Element A2: The base station apparatus 3 is the second in the component carrier (or the serving cell). Element A3 for transmitting the SS / PBCH block: The terminal device 1 receives the second SS / PBCH block in the component carrier (or the serving cell). Element A4: The base station device 3 is the same. In the second type 0PDCCH common search area set in the component carrier (or the serving cell), the element A5 that transmits the PDCCH: the terminal device 1 is the second type 0PDCCH in the component carrier (or the serving cell). In the common search region set, the upper layer parameter (eg, the field included in the MIB) associated with the element A6: NR-U that receives the PDCCH indicates the first value (eg, 1).

NR-U (New Radio --Unlicensed) may not be applied in a certain component carrier. In some serving cells, NR-U may not be applied. The absence of NR-U in a component carrier (or serving cell) may include at least a technique (framework, configuration) that includes some or all of the following elements B1 through B6.
Element B1: In the component carrier (or the serving cell), the first SS burst set is configured Element B2: The base station apparatus 3 is the first in the component carrier (or the serving cell). Element B3 for transmitting the SS / PBCH block: The terminal device 1 receives the first SS / PBCH block in the component carrier (or the serving cell). Element B4: The base station device 3 is the same. In the first type 0PDCCH common search area set in the component carrier (or the serving cell), the element B5 that transmits the PDCCH: the terminal device 1 is the first type 0PDCCH in the component carrier (or the serving cell). In the common search area set, the upper layer parameter (for example, the field included in the MIB) related to the element B6: NR-U that receives the PDCCH shows a value different from the first value (for example, 0).

A component carrier may be set to a licensed band. Some serving cells may be set in the licensed band. Here, setting a certain component carrier (or a certain serving cell) to the license band may include at least a part or all of the following settings 1 to 3.
Setting 1: An upper layer parameter is given to indicate that a component carrier (or a serving cell) operates in the licensed band, or an unlicensed band is given to a component carrier (or a serving cell). ) Is not given. Setting 2: A component carrier (or a serving cell) is set to operate in the licensed band, or an unlicensed band is operated. A component carrier (or a serving cell) is not set Setting 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

The license band may be a band in which a radio station license is required for a terminal device that operates (expected) in the license band. The licensed band may be a band in which only terminal devices manufactured by a business operator (business entity, business, group, company) holding a radio station license are permitted to operate. The unlicensed band may be a band that does not require a channel access procedure prior to transmitting a physical signal.

The license-free band may be a band in which a radio station license is not required for a terminal device that operates (expected) in the license-free band. The unlicensed band is a band in which a terminal device manufactured by a business operator holding a radio station license and / or a part or all of a business operator not holding a radio station license is permitted to operate. Good. The unlicensed band may be a band that requires a channel access procedure prior to transmitting a physical signal.

Whether or not NR-U is applied to a certain component carrier (or a certain serving cell) is determined by at least a band in which the certain component carrier (or the certain serving cell) can operate in an unlicensed band (for example, an unlicensed band). It may be decided based on whether or not it is set to a band that can be operated only by. For example, a list of bands designed for NR or carrier aggregation of NR may be specified. For example, if one or more bands in the list are included in a band that can be operated in the unlicensed band (for example, a band that can be operated only in the unlicensed band), the NR-U is included in the band. May be applied. Further, if one or more bands in the list are not included in the band that can be operated in the unlicensed band (for example, the band that can be operated only in the unlicensed band), the NR-U is included in the band. Is not applied, and normal NR (for example, NR of release 15 or NR other than NR-U of release 16) may be applied.

Whether or not NR-U is applied to a component carrier (or a serving cell) is determined only in a band in which the component carrier (or the serving cell) can operate NR-U (for example, NR-U). It may be determined based on whether or not it is set to an operable band). For example, a list of bands whose NR or NR carrier aggregation is designed for its operation is specified, and one or more bands in the list operate only NR-U-operable bands (for example, only NR-U is operated). When specified as (possible band), NR-U is applied if the band set for the component carrier (or its serving cell) is either one or more of the bands. If it is a band other than one or more bands, NR-U is not applied, and a normal NR (for example, NR of release 15 or NR other than NR-U of release 16) may be applied.

Whether or not NR-U is applied to a certain component carrier (or a certain serving cell) is determined based on the information contained in the system information (for example, Master Information Block (MIB or Physical Broadcast Channel (PBCH))). May be done. For example, if the MIB contains information indicating whether or not to apply NR-U, and that information indicates that NR-U is applied, then for the serving cell to which the MIB corresponds, NR- U may be applied. On the other hand, if the information does not indicate that NR-U is applied, NR-U may not be applied to the serving cell to which the MIB corresponds, and normal NR may be applied. Alternatively, it may indicate whether or not the information can be operated in a license-free band.

Some component carriers may be set to unlicensed bands. Some serving cells may be set to unlicensed bands. Here, setting a certain component carrier (or a certain serving cell) to the unlicensed band may include at least a part or all of the following settings 4 to 6.
Setting 4: An upper layer parameter is given to a certain component carrier (or a certain serving cell) indicating that it operates in an unlicensed band. Setting 5: A certain component carrier (or a certain serving cell) operates in an unlicensed band. ) Is set 6: A component carrier (or a serving cell) is included in the unlicensed band

Hereinafter, the explanation will be given on the assumption that NR-U is applied to the component carrier or NR-U is not applied. Note that "NR-U is applied to the component carrier" may mean "NR-U is applied to the serving cell", and "NR-U is not applied to the component carrier" means that "NR-U is not applied to the component carrier". It may be that "NR-U is not applied to the serving cell".

For example, when NR-U is not applied to a certain component carrier, the terminal device 1 may receive the first SS / PBCH block. Further, when NR-U is not applied to a certain component carrier, the terminal device 1 may receive the first PDCCH in the first type 0 PDCCH common search area set. Further, if NR-U is not applied in a certain component carrier, the base station apparatus 3 may transmit the first SS / PBCH block. Further, when NR-U is not applied to a certain component carrier, the base station apparatus 3 may transmit the first PDCCH in the first type 0 PDCCH common search area set. The first SS / PBCH block may be received in any of the SS / PBCH block candidates included in the first SS burst set. The first SS / PBCH block may be transmitted in any of the SS / PBCH block candidates included in the first SS burst set.

The terminal device 1 may multiplex the uplink control information (UCI) on the PUCCH and transmit it. The terminal device 1 may multiplex the UCI to the PUSCH and transmit it. UCI is a downlink channel state information (CSI), a scheduling request (SR) indicating a PUSCH resource request, and a downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink). -At least one of HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) information for Shared Channel: DL-SCH, Physical Downlink Shared Channel (PDSCH) may be included.

HARQ control for one transport block (TB) may be called a HARQ process. HARQ control can operate in parallel for multiple transport blocks (TB). A HARQ process identifier may be associated with each HARQ process.

FIG. 7 is a diagram showing an example of correspondence between the monitoring opportunity (Monitoring occupation for search space set) of the search area set and the monitoring opportunity (Monitoring occurrence for PDCCH) of the PDCCH according to one aspect of the present embodiment. In FIG. 7, the monitoring opportunity of the search area set in the primary cell is the OFDM symbol at the beginning of the slot, and the monitoring opportunity of the search area set in the secondary cell is the OFDM symbol at the beginning of the slot and the OFDM symbol in the middle of the slot (for example,). , OFDM symbol # 7). In FIG. 7, the PDCCH monitoring opportunity corresponds to the OFDM symbol at the beginning of slot # n and the OFDM symbol between slot # n, and the OFDM symbol at the beginning of slot # n + 1 and the OFDM symbol between slot # n + 1. .. That is, the PDCCH monitoring opportunity may be defined as an opportunity for the search region set monitoring opportunity to be set in at least one of one or more serving cells. Also, the PDCCH monitoring opportunity may correspond to the index of the OFDM symbol in which the monitoring opportunity of the search region set is set in at least one of one or more serving cells.

In the slot, the monitoring opportunity of the search area set starting from a certain OFDM symbol index may correspond to the monitoring opportunity of PDCCH starting from the certain OFDM symbol index. The PDCCH monitoring opportunities starting from an OFDM symbol index may correspond to each of the search region set monitoring opportunities starting from a certain OFDM symbol index.

The terminal device 1 sets the PDCCH monitoring opportunity set for the HARQ-ACK information transmitted in the PUCCH arranged in the slot (slot # n) of the index n as the value of the timing K1 and the value of the slot offset K0. It may be decided based on at least a part or all of. The set of PDCCH monitoring opportunities for HARQ-ACK information transmitted in the PUCCH placed in the slot of index n is also the set of PDCCH monitoring opportunities (monitoring occupation for PDCCH for slot # n) for slot n. It is called. Here, the set of monitoring opportunities for PDCCH includes monitoring opportunities for M PDCCH. For example, slot offset K0 may be indicated at least based on the value of the time domain resource allocation field contained in the downlink DCI format. The slot offset K0 is from the slot containing the last OFDM symbol in which the PDCCH containing the DCI format including the time region resource allocation field indicating the slot offset K0 is placed to the first OFDM symbol of the PDSCH scheduled by the DCI format. It is a value indicating the number of slots (slot difference) of.

FIG. 8 is a diagram showing a configuration example of a set of PDCCH monitoring opportunities for slot n according to one aspect of the present embodiment. In FIG. 8, the monitoring opportunity of the search area set in the primary cell is the OFDM symbol at the beginning of the slot, and the monitoring opportunity of the search area set in the secondary cell is the OFDM symbol at the beginning of the slot and the OFDM symbol in the middle of the slot (for example,). , OFDM symbol # 7). In FIG. 8, the search area set monitoring opportunity in the primary cell is configured to include 801 and 804, and the search area set monitoring opportunity in the secondary cell is configured to include 802, 803, 805, and 806. .. In FIG. 8, DCI format 811 is detected in 802, DCI format 812 is detected in 804, DCI format 813 is detected in 805, and DCI format 814 is detected in 806.

For example, if it is shown that HARQ-ACK information is transmitted in slot n, at least based on the timing K1 and slot offset K0 indicated by DCI format 811 then the terminal device 1 is of a PDCCH defined at least based on the 801. The monitoring opportunity may be determined as a PDCCH monitoring opportunity for slot n. For example, it is not shown that HARQ-ACK information is transmitted in slot n, at least based on the timing K1 and slot offset K0 indicated by DCI format 812, and at least the timing K1 and slot offset K0 indicated by DCI format 813. Based on this, if it is not shown that HARQ-ACK information is transmitted in slot n, the terminal device 1 has a PDCCH monitoring opportunity for slot n that is defined based on at least some or all of the 804 and 805. It does not have to be determined as a monitoring opportunity. For example, if it is shown that HARQ-ACK information is transmitted in slot n, at least based on the timing K1 and slot offset K0 indicated by DCI format 814, the terminal device 1 is of the PDCCH defined at least based on the 806. The monitoring opportunity may be determined as a PDCCH monitoring opportunity for slot n.

That is, when the DCI format detected in the monitoring opportunity of any search region set corresponding to the monitoring opportunity of a certain PDCCH triggers the transmission of HARQ-ACK information in slot n, the terminal device 1 causes the PDCCH. The monitoring opportunity of may be determined as the PDCCH monitoring opportunity for slot n. Further, 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 transmission of HARQ-ACK information in slot n, the terminal device 1 has the monitoring opportunity of the PDCCH. Does not have to be determined as a PDCCH monitoring opportunity for slot n. Further, when the DCI format is not detected in the monitoring opportunity of the search area set corresponding to the monitoring opportunity of a certain PDCCH, the terminal device 1 does not have to determine the monitoring opportunity of the PDCCH as the PDCCH monitoring opportunity for the slot n. ..

The PUCCH resource used to transmit HARQ-ACK information in slot n is the PUCCH resource included in the last DCI format of the one or more DCI formats detected in the set of PDCCH monitoring opportunities for slot n. It may be specified at least based on the indicated field. Here, each of the one or more DCI formats triggers transmission of HARQ-ACK information in slot n. The last DCI format may be the DCI format corresponding to the last index (largest index) of the DCI formats detected in the set of PDCCH monitoring opportunities for the slot n. The DCI format index in the set of PDCCH monitoring opportunities for the slot n is given in ascending order to the index of the serving cell in which the DCI format is detected, and then the PDCCH monitoring opportunity in which the DCI format is detected. Given in ascending order to the index of. The PDCCH monitoring opportunity index is given in ascending order on the time axis.

The DAI field is a general term for the first DAI field and the second DAI field. The counter DAI (Counter DAI) is the cumulative number (or cumulative) of PDCCH detected up to the monitoring opportunity of the PDCCH in the serving cell for the monitoring opportunity of the PDCCH in the serving cell in the monitoring opportunity of M PDCCH. It may be at least a value related to the number). The counter DAI may also be referred to as C-DAI. The terminal device 1 may be indicated by a DAI field in which the C-DAI corresponding to the PDSCH is included in the DCI format used to schedule the PDSCH. The C-DAI corresponding to the PDSCH may be indicated by a first DAI field included in the DCI format used to schedule the PDSCH. The C-DAI corresponding to the PDSCH may be indicated by some or all of the bits in the second DAI field contained in the DCI format used to schedule the PDSCH.

9, 10, and 11 are diagrams showing an example of the procedure for configuring the HARQ-ACK codebook (codebook of HARQ-ACK information) according to one aspect of the present embodiment. <AX> in FIGS. 9, 10 and 11 is also referred to as step AX. In FIGS. 9, 10 and 11, "A = B" may mean that A is set to B. In FIGS. 9, 10, and 11, "A = B" may mean that B is input to A. The terminal device 1 generates a HARQ-ACK codebook based on the procedure described in FIGS. 9, 10, and 11.

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

The HARQ-ACK codebook corresponding to a certain PDSCH group may be given based on at least a part or all of steps A1 to A46. A HARQ-ACK codebook corresponding to a PDSCH group is one or more HARQ-corresponding to any one or more transport blocks contained in any one or more PDSCHs contained in the PDSCH group. It may be given based on the ACK bit.

The HARQ-ACK codebook may be given based on at least a set of PDCCH monitoring opportunities, UL DAI field values, and / or some or all of the DAI fields.

The HARQ-ACK codebook may be given at least on the basis of a set of PDCCH monitoring opportunities, UL DAI, counter DAI, and / or part or all of the total DAI.

In step A1, the serving cell index c is set to 0. The serving cell index may be given for each serving cell at least based on the parameters of the upper layer.

In step A2, m = 0 is set. m may indicate an index of monitoring opportunities for DCI format 1_0 or PDCCH including DCI format 1-1.1.

In step A3, j may be set to 0.

In step A4, V _temp may be set to 0.

In step A5, V _emp2 may be set to 0.

In step A6, V _s = φ may be set. φ indicates the empty set.

In step A7, N ^DL _cells may be set to the number of serving _cells . The number of serving cells may be the number of serving cells set in the terminal device 1.

In step A8, M may be set to the number of PDCCH monitoring opportunities.

In step A9, the first evaluation formula m <M is evaluated. Step A10 may be executed when the first evaluation formula is true. Step A34 may be executed when the first evaluation formula is false.

In step A10, c may be set to 0.

In step A11, the second evaluation formula c <N ^DL _cells is evaluated. Step A11 may be performed if the second evaluation formula is true. Step A33 may be executed when the second evaluation formula is false.

In step A12, if the PDCCH monitoring opportunity m in the serving cell c is before the switching of the activated downlink BWP, step A13 may be executed. In step A12, step A13 may be performed if there is an activation uplink BWP switch in the PCell and the activation downlink BWP switch is not triggered by DCI format 1-1.1. If all of the above two conditions are not met, step A14 may be executed.

In step A13, c may be set to c + 1.

In step A14, step A15 may be executed.

In step A15, if there is a PDCCH associated with the PDCCH at the monitoring opportunity m of the PDCCH in the serving cell c, or if there is a PDCCH indicating the release of the SPS PDSCH in the serving cell c, step A16 may be performed.

In step A16, the third evaluation formula V ^DL _{C-DAI, c, m} ≤ V _emp is evaluated. Step A17 may be performed if the third evaluation formula is true. If the third evaluation formula is false, step A18 may be executed.

V ^DL _{C-DAI, c, m} is the value of the counter DAI (Downlink Assignment Index) given at least based on the PDCCH detected at the monitoring opportunity m of the PDCCH in the serving cell c. In determining the counter DAI, the PDCCH index detected at M monitoring opportunities may be given the serving cell index c first and the PDCCH monitoring opportunity m second. That is, the PDCCH indexes detected in the monitoring opportunities of M PDCCHs may be first mapped in the order of the serving cell index c, and then in the order of the PDCCH monitoring opportunities m (serving cell index first, PDCCH monitoring). occasion second mapping). The counter DAI may be referred to as a C-DAI (Counter Downlink Assignment Index).

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

Step A18 may be a step indicating the completion of the operation based on the third evaluation formula in step A12.

In step A19, V _temp may be set to V ^DL _{C-DAI, c, m} .

In step A20, the fourth evaluation formula V ^DL _{T-DAI, m} = φ may be evaluated. Step A21 may be performed if the fourth evaluation formula is true. Step A22 may be executed when the fourth evaluation formula is false.

V ^DL _{T-DAI, m} may be the value of total DAI given at least based on the PDCCH detected at the PDCCH monitoring opportunity m in the serving cell c. The total DAI may indicate the cumulative number (or at least a value related to the cumulative number) of PDCCH detected by the monitoring opportunity m of PDCCH in the monitoring opportunity of M PDCCH. The total DAI may be referred to as a T-DAI (Total Downlink Assignment Index).

The HARQ-ACK codebook may be multiplexed with a PUSCH scheduled at least based on DCI format 0-1 and at least V ^DL _{T-DAI, m} may be replaced with V ^UL _DAI when m = M-1.

In step A21, V _emp2 may be set to V ^DL _{C-DAI, c, m} .

In step A22, step A23 may be executed.

In step A23, V _{temp 2} may be set to V ^DL _{T-DAI, m} .

Step A24 may be a step indicating the completion of the operation based on the fourth evaluation formula in step A20.

In step A25, 1) harq-ACK-SpatialBundlingPUCCH is not provided, 2) the PDCCH monitoring opportunity m is a PDCCH monitoring opportunity including DCI format 1_0 or DCI format 1-11, and 3) two lances. Step A26 may be performed when maxNrovCodeWordsSchedulatedByDCI is set in at least one BWP in at least one serving cell for the reception of the port block. The maxNrovCodeWordsSchedulatedByDCI may be information indicating whether or not to support the transmission of two transport blocks in the PDSCH.

In step ^{_{A26, o ACK a (8j +}} 2 (V DL C-DAI, c, m -1)) may be set to a first value of HARQ-ACK bits corresponding to the transport block of the serving cell c. The value of the HARQ-ACK bit being 1 may indicate ACK. The value of the HARQ-ACK bit being 0 may indicate NACK. The first transport block of the serving cell c is the first transport block included in the PDSCH scheduled by the DCI format contained in the PDCCH detected at the monitoring opportunity m of the PDCCH in the serving cell c. May be good.

In step ^{_{A27, o ACK a (8j +}} 2 (V DL C-DAI, c, m -1) +1) may be set to a second value of the HARQ-ACK bits corresponding to the transport block of the serving cell c. The second transport block of the serving cell c is the second transport block contained in the PDSCH scheduled by the DCI format contained in the PDCCH detected at the monitoring opportunity m of the PDCCH in the serving cell c. May be good.

The fact that the PDSCH contains a first transport block and the PDSCH does not contain a second transport block may mean that the PDSCH contains one transport block.

In step A28, _{V s} is ^{_{V s ∪ {8j + 2 (}} V DL C-DAI, c, m -1), 8j + 2 (V DL C-DAI, c, m -1) +1} may be set to. Y∪Z may indicate the union of the set Y and the set Z. {*} May be a set composed of *.

In step A29, 1) harq-ACK-SpatialBundling PUCCH is provided, 2) PDCCH monitoring opportunity m is a PDCCH monitoring opportunity including DCI format 1-1-1, and 3) reception of two lance port blocks. Step A30 may be executed when maxNrovCodeWordsSchedulatedByDCI is set in at least one BWP in at least one serving cell.

In step A30, o ^ACK _a (4j + V ^DL _{C-DAI, c, m} -1) corresponds to the first transport block of the serving cell c with the first HARQ-ACK bit and the second transport of the serving cell c. It may be set to the value given by the logical AND operation of the second HARQ-ACK bit corresponding to the block.

In step A31, V _s may be set to V _s ∪ {4j + V ^DLC _{-DAI, c, m} -1}.

In step A32, step A33 may be executed when the conditions of step A25 and the conditions of step A29 are not satisfied.

In step A33, o ^ACK _a (4j + V ^DL _{C-DAI, c, m} -1) may be 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) may be set to the value of the HARQ-ACK bit of the serving cell c.

In step A34, V _s may be set to V _s ∪ {4j + V ^DLC _{-DAI, c, m} -1}.

Step A35 may be a step indicating the completion of the operation of step A25.

Step A36 may be a step indicating the completion of the operation of step A15.

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

Step A38 may be a step indicating the completion of the operation of step A12.

In step A39, step A11 may be executed.

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

In step A41, step A10 may be executed.

In step A42, the fifth evaluation formula V _emp2 <V _temp may be executed. Step A43 may be performed if the fifth evaluation formula is true. Step A44 may be executed when the fifth evaluation formula is false.

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

Step A44 may be a step indicating the completion of step A42.

In step A45, step A46 may be executed when 1) harq-ACK-SpatialBundlingPUCCH is not provided, and 2) maxNrovCodeWordsSchedulledByDCI is set in at least one BWP in at least one serving cell. If all of the above two conditions are not met, step A47 may be executed.

In step A46, O _ACK may be set to 2 (4j + V _emp2 ).

In step A47, step A48 may be executed.

In step A48, O _ACK may be set to 4j + V _emp2 .

Step A49 may be a step indicating the completion of the operation of step A12.

In step A50, i _N ∈ {0,1,. .. .. For _{i N} ^{where O} ACK -1} ¥ _{V s} is ^{satisfied, o} _ACK a _{(i N)} may be set to a value of NACK. V \ W may indicate a set obtained by subtracting the elements included in the set W from the set V. V \ W may be the complement of V with respect to W.

In step A51, c may be set to 0.

In step A52, the seventh evaluation formula c <N ^DL _cells is evaluated. Step A54 may be performed if the seventh evaluation formula is true. If the second evaluation formula is false, step A58 may be executed.

In step A54, the PDSCH (SPS PDSCH) scheduled by the grants set in one or more slots at the monitoring opportunity of M PDCCHs is set to be received, and the transmission of the SPS PDSCHs is activated. If activated, step A54 may be performed.

In step A54, O ^ACK may be set to O ^ACK + 1. In step A44, O ^ACK may be set to O ^ACK + N _SPS . The N _SPS may be the number of SPS PDSCHs set to be received at the monitoring opportunity 1001 of M PDCCHs.

In step A55, o ^ACK _a (o ^ACK _a -1) may be set to the value of the HARQ-ACK bit corresponding to the transport block contained in the SPS PDSCH. In step A45, o ^ACK _a (o ^ACK _a- i _SPS ) may be set to the value of the HARQ-ACK bit corresponding to the transport block contained in the SPS PDSCH. i _SPS is i _SPS ∈ {0,1,. .. .. , N _SPS -1} may be satisfied. In step A45, o ^ACK _a (o ^ACK _a -1) corresponds to the transport block contained in each of the one or more SPS PDSCHs set to be received at the monitoring opportunity of M PDCCHs. -It may be set to the value given by the logical product of the ACK bits.

Step A56 may be a step indicating the completion of the operation of step A53.

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

Step A58 may be a step indicating the completion of the operation of step A52.

The first to seventh evaluation formulas are also called evaluation formulas. The fact that the evaluation formula is true may mean that the evaluation formula is satisfied. The fact that the evaluation formula is false may mean that the evaluation formula is not true. The fact that the evaluation formula is false may mean that the evaluation formula is not satisfied.

The terminal device 1 may be associated with a PDSCH group identifier (PGI: PDSCH Group ID) for each PDSCH. The PGI of a PDSCH may be indicated at least based on the DCI format used to schedule the PDSCH. For example, a field indicating PGI (PGI field) may be included in the DCI format. For example, the PDSCH group may be a set of PDSCHs having the same PGI (PDSCH group identifier). The PDSCH group may be one PDSCH or a set of one or more PDSCHs associated with the same PGI. The number of PDSCH groups set for the terminal device 1 is N _group . The N _group may be 1, may be 2, may be 3, may be 4, or may be an integer greater than or equal to 0 other than that. The number of PDSCH groups that can be set for the terminal device 1 is N _{group, max} . For example, a number of PDSCH groups corresponding to an integer value of N _{group, max} or less may be set for the terminal device 1. It may be set based on at least the N _group and / or RRC parameters.

The PGI field is a general term for the first PGI field and the second PGI field. The terminal device 1 may determine the PDSCH group to which the PDSCH is associated, at least based on the value of the PGI field included in the DCI field used for scheduling a certain PDSCH.

For example, the second PGI field may be included in DCI format 1-1.1. For example, the number of bits N _{PGI, second} in the _second PGI field may be 1 or 2. For example, the number of bits N _{PGI, second} of the _second PGI field may be given by ceil (log2 (N _group )). For example, the number of bits N _{PGI, second} of the _second PGI field may be given by ceil (log2 (N _{group, max} )). For example, the first PGI field does not have to 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 _{PGI, first} in the _first PGI field may be 1 or 2. For example, the number of bits N _{PGI, first} in the _first PGI field may be given by ceil (log2 (N _group )). For example, the number of bits N _{PGI, first} in the _first PGI field may be given by ceil (log2 (N _{group, max} )).

For example, the DCI format 1_1 that does not include the first PGI field may be set for the terminal device 1, and the DCI format 1-11 that includes the second PGI field may be set. Here, the number of bits N _{PGI, second} of the _second PGI field may be ceil (log2 (N _group )). Here, the number of bits N _{PGI, second} of the _second PGI field may be larger than ceil (log2 (N _group )). Here, the number of bits N _{PGI, second} of the _second PGI field may be ceil (log2 (N _{group, max} )). Here, the PDSCH group of the PDSCH scheduled according to the DCI format 1_0 is associated with the PDSCH group having the smallest index (for example, the PDSCH group of the index 0) among the PDSCH groups set in the terminal device 1. May be good. Here, the PDSCH group of the PDSCH scheduled according to the DCI format 1_0 is linked to the PDSCH group having the largest index (for example, the PDSCH group of the index N _group -1) among the PDSCH groups set in the terminal device 1. It may be attached. Here, the PDSCH group of the PDSCH scheduled according to the DCI format 1_0 may be associated with a predetermined PDSCH group (for example, a PDSCH group fixed in advance by a description in a specification or the like). Here, the PDSCH group of the PDSCH scheduled according to the DCI format 1_0 does not have to be associated with any of the N _group PDSCH groups. Here, the PDSCH group of the PDSCH scheduled according to the DCI format 1-11 may be associated with the PDSCH group specified at least based on the value of the second PGI field.

For example, the DCI format 1_1 including the first PGI field may be set for the terminal device 1, and the DCI format 1-11 including the second PGI field may be set. Here, the number of bits N _{PGI, first} in the _first PGI field may be ceil (log2 (N _group )). Here, the number of bits N _{PGI, first} in the _first PGI field may be larger than ceil (log2 (N _group )). Here, the number of bits N _{PGI, first} in the _first PGI field may be ceil (log2 (N _{group, max} )). Here, the number of bits N _{PGI, second} of the _second PGI field may be ceil (log2 (N _group )). Here, the number of bits N _{PGI, second} of the _second PGI field may be larger than ceil (log2 (N _group )). Here, the number of bits N _{PGI, second} of the _second PGI field may be ceil (log2 (N _{group, max} )). Here, the PDSCH group of the PDSCH scheduled according to the DCI format 1_0 may be associated with the PDSCH group specified at least based on the value of the first PGI field. Here, the PDSCH group of the PDSCH scheduled according to the DCI format 1-11 may be associated with the PDSCH group specified at least based on the value of the second PGI field.

The requested PDSCH group (RPG: Requested PDSCH Group) may be a PDSCH group corresponding to the HARQ-ACK information transmitted (reported) via the next PUCCH or PUSCH. The RPG (Request PDSCH Group) may include one PDSCH group or a plurality of PDSCH groups. The RPG instructions may be given corresponding to each PDSCH group in the form of a bitmap, at least based on the DCI format. The RPG may be indicated at least based on the RPGI field contained in the DCI format. The terminal device 1 may generate a HARQ-ACK codebook for the instructed RPG and transmit (report) it via PUCCH or PUSCH.

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

For example, the second RPGI field may be included in DCI format 1-1.1. For example, the first RPGI field does not have to 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 _{RPG, second} in the _second RPGI field may be equal to N _group . For example, the number of bits N _{RPG, second} in the _second RPGI field may be equal to N _{group, max} .

For example, the DCI format 1_1 not including the first RPGI field may be set for the terminal device 1, and the DCI format 1-11 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 in the second RPGI field may be equal to N _{group, max} . Here, by detecting the DCI format 1_0, one or a plurality of transport blocks included in any one or a plurality of PDSCHs associated with the PDSCH group having the smallest index (for example, a PDSCH group having an index of 0). The transmission of one or more HARQ-ACK information corresponding to any of them may be triggered. Here, one or a plurality of transformers included in any one or a plurality of PDSCHs associated with the PDSCH group having the largest index (for example, the PDSCH group having the index N _group -1) by the detection of the DCI format 1_0. Transmission of one or more HARQ-ACK information corresponding to any of the port blocks may be triggered. Here, one or a plurality of PDSCHs included in any one or a plurality of PDSCHs associated with a predetermined PDSCH group (for example, a PDSCH group fixed in advance by the description of specifications or the like) by detecting the DCI format 1_0. Transmission of one or more HARQ-ACK information corresponding to any of the transport blocks of may be triggered. Here, the detection of the DCI format 1_0 corresponds to either one or a plurality of transport blocks included in any one or a plurality of PDSCHs that are not associated with any of the N _group PDSCH groups 1 Alternatively, transmission of a plurality of HARQ-ACK information may be triggered. Here, with the detection of the DCI format 1-11, one or more transformers included in any one or more PDSCHs corresponding to any one or more PDSCH groups indicated at least based on the second RPGI field. Transmission of one or more HARQ-ACK information corresponding to any of the port blocks may be triggered.

For example, the DCI format 1_1 including the first RPGI field may be set for the terminal device 1, and the DCI format 1-11 including the second RPGI field may be set. Here, the number of bits in the first RPGI field may be equal to N _group . Here, the number of bits in the first RPGI field may 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 in the second RPGI field may be equal to N _{group, max} . Here, with the detection of the DCI format 1_0, one or more transformers included in any one or more PDSCHs corresponding to any one or more PDSCH groups indicated at least based on the first RPGI field. Transmission of one or more HARQ-ACK information corresponding to any of the port blocks may be triggered. Here, with the detection of the DCI format 1-11, one or more transformers included in any one or more PDSCHs corresponding to any one or more PDSCH groups indicated at least based on the second RPGI field. Transmission of one or more HARQ-ACK information corresponding to any of the port blocks may be triggered.

The value of K1 (information or parameter indicated by the timing indicator field from PDSCH to HARQ feedback) indicated by the DCI format included in the PDCCH may be numerical or non-numerical. ) May be. Here, the numerical value means a value represented by a numerical value, for example, {0, 1, 2, ... .. .. , 15}. A non-numeric value may mean a non-numeric value or may mean no numerical value. Hereinafter, the operation of the numerical value of K1 and the non-numerical value of K1 will be described. For example, the PDSCH scheduled in the DCI format is transmitted in the base station apparatus 3 in slot n and received in the terminal apparatus 1. When the value of K1 indicated by the DCI format is a numerical value, the terminal device 1 may transmit (report) HARQ-ACK information corresponding to the PDSCH in slot n + K1 via PUCCH or PUSCH. If the value of K1 indicated by the DCI format is non-numeric, the terminal device 1 may postpone reporting the HARQ-ACK information corresponding to the PDSCH. If the DCI format containing the PDSCH scheduling information indicates a non-numeric value of K1, the terminal device 1 may postpone reporting the HARQ-ACK information corresponding to the PDSCH. For example, the terminal device 1 stores the HARQ-ACK information in a recording medium such as a memory, does not transmit (report) the HARQ-ACK information via the next PUCCH or PUSCH, and does not transmit (report) the HARQ-ACK information other than the above-mentioned DCI format. The transmission of the HARQ-ACK information may be triggered to transmit (report) the HARQ-ACK information based on at least the DCI format.

The non-numeric value of K1 may be included in the series of first upper layer parameters. The first upper layer parameter may be the 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 a timing instruction field from PDSCH to HARQ feedback included in DCI format 1_0 or DCI format 1-11 in the series of first upper layer parameters. For example, the sequence of the first upper layer parameters is set to {0,1,2,3,4,5,15, non-numeric value}, and the number of bits of the timing instruction field from PDSCH to HARQ feedback is 3. If it is assumed, the code point “000” in the timing instruction field from PDSCH to HARQ feedback may indicate that the value of K1 is 0, and the code point “001” may indicate that the value of K1 is 1. This may be indicated, or 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 parameters is set to {non-numeric values, 0,1,2,3,4,5,15}, and the number of bits in the timing indicator field from PDSCH to HARQ feedback is 3. If it is assumed, the code point "000" in the timing instruction field from PDSCH to HARQ feedback may indicate that the value of K1 is a non-numeric value, and the code point "001" is the value of K1. It may indicate that it is 0, or the code point “111” may indicate that the value of K1 is 15.

For example, the timing instruction field from PDSCH to HARQ feedback included in DCI format 1_0 does not have to show a non-numeric value. For example, a code point with a timing indicator field from PDSCH to HARQ feedback included in DCI format 1_0 may indicate a non-numeric value. For example, the timing indicator field from PDSCH to HARQ feedback contained in DCI format 1-11 does not have to show a non-numeric value. For example, a code point with a timing indicator field from PDSCH to HARQ feedback included in DCI format 1-11 may indicate a non-numeric value.

The NFI (New Feedback Indicator) field may be a DCI field indicating whether or not HARQ-ACK information including the HARQ-ACK bit corresponding to the transport block of PDSCH is correctly detected. The NFI field may be a field indicating whether or not to erase (flash) the HARQ-ACK bit stored in a recording medium such as a memory.

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

For example, the DCI format 1_1 that does not include the first NFI field may be set for the terminal device 1, and the DCI format 1-11 that includes the second NFI field may be set. Here, the number of bits N _{NFI, second} of the _second NFI field may be equal to N _group . Here, the number of bits N _{NFI, second} of the _second NFI field may be equal to N _{group, max} . Here, it may be assumed that the detection of the DCI format 1_0 toggles the NFI of the PDSCH group having the smallest index (for example, the PDSCH group having the index 0). Here, it may be assumed that the detection of the DCI format 1_0 toggles the NFI of the PDSCH group with the largest index (eg, the PDSCH group of index N _group -1). Here, it may be assumed that the detection of the DCI format 1_0 toggles the NFI of a predetermined PDSCH group (for example, a PDSCH group fixed in advance by the description of the specifications or the like). Here, it may be assumed that the detection of the DCI format 1_0 toggles the NFIs of N _group PDSCH groups. Here, it is not necessary to assume that the NFIs of N _group PDSCH groups have been toggled by the detection of the DCI format 1_0. Here, with the detection of the DCI format 1-11, one or more transformers included in any one or more PDSCHs corresponding to any one or more PDSCH groups indicated at least based on the second NFI field. Transmission of one or more HARQ-ACK information corresponding to any of the port blocks may be triggered. Here, each of the bits of the second NFI field included in the DCI format 1-11 may correspond to one PDSCH group.

For example, the DCI format 1_1 including the first NFI field may be set for the terminal device 1, and the DCI format 1-11 including the second NFI field may be set. Here, the number of bits N _{NFI, first} of the _first NFI field may be 1. Here, the number of bits N _{NFI, second} of the _second NFI field may be equal to N _group . Here, the number of bits N _{NFI, second} of the _second NFI field may be equal to N _{group, max} . Here, the first NFI field included in the DCI format 1_0 may correspond to a PDSCH group having the smallest index (for example, a PDSCH group having an index of 0). Here, the first NFI field included in the DCI format 1_0 may correspond to a PDSCH group having the largest index (for example, a PDSCH group having an index N _group- 1). Here, the first NFI field included in the DCI format 1_0 may correspond to a predetermined PDSCH group (for example, a PDSCH group fixed in advance by description in a specification or the like). Here, the first NFI field included in the DCI format 1_0 may correspond to a PDSCH group to which the PDSCH scheduled by the DCI format 1_0 is associated. Here, each of the bits of the second NFI field included in the DCI format 1-11 may correspond to one PDSCH group.

For example, the DCI format 1_1 including the first NFI field may be set for the terminal device 1, and the DCI format 1-11 including the second NFI field may be set. Here, the number of bits N _{NFI, first} in the _first NFI field may be equal to N _group . Here, the number of bits N _{NFI, first} in the _first NFI field may be equal to N _{group, max} . Here, the number of bits N _{NFI, second} of the _second NFI field may be equal to N _group . Here, the number of bits N _{NFI, second} of the _second NFI field may be equal to N _{group, max} . Here, each of the bits of the first NFI field included in the DCI format 1_0 may correspond to one PDSCH group. Here, each of the bits of the second NFI field included in the DCI format 1-11 may correspond to one PDSCH group.

For example, the terminal device 1 transmits the HARQ-ACK bit corresponding to the transport block included in the PDSCH scheduled by the DCI format, and then sets the value of the NFI bit corresponding to each PDSCH group indicated by the DCI format. You may save it. For example, when the terminal device 1 receives the DCI format, the terminal device 1 may store the value of the NFI bit corresponding to each PDSCH group indicated by the DCI format. Here, as the received NFI bit, the NFI bit indicated by the NFI field included in the DCI format used for scheduling the PDSCH may be referred to as the PDSCH. As the stored NFI bit, the NFI bit already stored in the terminal device 1 may be referred to as the PDSCH before the DCI format used for scheduling the PDSCH is detected. For each PDSCH group, the initial value of the stored 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 stored NFI bit to determine whether or not the NFI bit corresponding to the PDSCH group is toggled. The terminal device 1 may determine that the NFI bits are toggled when the values of the received NFI bits and the stored NFI bits are different. The terminal device 1 has a HARQ corresponding to the PDSCH group to which the NFI bit (that is, the received NFI bit) has been toggled with respect to the value of the previously received NFI bit (that is, the stored NFI bit) for the PDSCH group. -It may be determined that the ACK information has been detected in the base station apparatus 3. For example, when the base station apparatus 3 detects the HARQ-ACK information corresponding to the PDSCH group, the base station apparatus 3 may toggle the NFI bit corresponding to the PDSCH group. If the values of the received NFI bit and the stored NFI bit are equal, it may be determined that the NFI bit is not toggled. The terminal device 1 corresponds to a PDSCH group in which the NFI bit (ie, the received NFI bit) was not toggled relative to the value of the previously received NFI bit (ie, the stored NFI bit) for the PDSCH group. It may be determined that the HARQ-ACK information was not detected in the base station apparatus 3. For example, when the base station apparatus 3 does not detect the HARQ-ACK information corresponding to the PDSCH group, it is not necessary to toggle the NFI bit corresponding to the PDSCH group. Here, toggling means switching to a different value.

The received NFI may be composed of one or more received NFI bits. Each entry of the received NFI may be a received NFI bit corresponding to each PDSCH group. The storage NFI may consist of one or more storage NFI bits. Each storage NFI entry may be a storage NFI bit corresponding to each PDSCH group.

When the terminal device 1 generates the HARQ-ACK codebook corresponding to a certain PDSCH group, the terminal device 1 has an NFI bit for the PDSCH group as compared with the value of the previously received NFI bit (that is, the stored NFI bit). Is toggled, the already reported HARQ-ACK information (HARQ-ACK information other than the unreported HARQ-ACK information) may be deleted from the HARQ-ACK codebook corresponding to the PDSCH group. (It does not have to be included). If there is a PDSCH in the PDSCH group that has been detected and the HARQ-ACK information has not yet been reported, the terminal device 1 does not have to delete the HARQ-ACK information corresponding to the PDSCH ( May be included). That is, the terminal device 1 may multiplex the HARQ-ACK information corresponding to the PDSCH in the HARQ-ACK codebook. The terminal device 1 flushes the already reported HARQ-ACK information with respect to one or more HARQ-ACK information corresponding to the PDSCH group to which the NFI bit is toggled, and the unreported HARQ-ACK. You don't have to flush the information. Here, flushing means returning the HARQ-ACK information to an initial value (for example, NACK). When the terminal device 1 receives the toggled NFI and then transmits the HARQ-ACK codebook corresponding to the PDSCH group for that NFI bit, the unflushed HARQ-ACK information (unreported HARQ-). ACK information) is used to generate and transmit a HARQ-ACK codebook. When the terminal device 1 receives the non-toggle NFI and then transmits the HARQ-ACK codebook corresponding to the PDSCH group for that NFI bit, the unflushed HARQ-ACK information (reported HARQ-ACK information). The HARQ-ACK codebook is generated and transmitted using the HARQ-ACK information that has not been reported.

The terminal device 1 may determine the HARQ-ACK codebook at least based on whether or not the NFI bit is toggled. The terminal device 1 may determine the HARQ-ACK codebook corresponding to a PDSCH group, at least based on whether the stored NFI bit and the received NFI bit corresponding to the PDSCH group are toggled.

The terminal device 1 does not report (not-reported), has reported (reported), or does not correspond to the reporting status (HARQ-ACK reporting status) of the HARQ-ACK bit corresponding to the transport block included in the PDSCH. It may be set to any of (N / A). Here, the reporting state may be set to the already reported state when the HARQ-ACK bit corresponding to the transport block included in the PDSCH has already been reported in the terminal device 1. The reporting state may be set to unreported if the HARQ-ACK bit is not reported in terminal device 1. Further, the reporting state is already triggered in the terminal device 1 to be transmitted on the uplink physical channel having the HARQ-ACK bit corresponding to the transport block included in the PDSCH, and the transmission of the uplink physical channel is performed. If attempted, it may be set to previously reported. The reporting state is set to unreported if the terminal device 1 has already triggered transmission of the HARQ-ACK bit on an uplink physical channel and no attempt is made to transmit the uplink physical channel. May be good. The reporting status is unreported or not applicable (N / A) if the terminal device 1 is not triggered to transmit on the uplink physical channel with the HARQ-ACK bit corresponding to the transport block included in the PDSCH. It may be set to. The initial value of the reporting state may be set to Not applicable (N / A) in advance.

The terminal device 1 determines the HARQ-ACK bit corresponding to the transport block included in the PDSCH, and whether or not the NFI bit of the PDSCH group to which the PDSCH is associated is toggled. The ACK bit may be processed. The terminal device 1 has already reported the reporting status of the HARQ-ACK information corresponding to the transport block included in the PDSCH to a certain PDSCH, and the NFI bit corresponding to the PDSCH group to which the PDSCH is associated. If is toggled, it may be determined that the HARQ-ACK bit corresponding to the transport block contained in the PDSCH is correctly detected. That is, when the NFI bit corresponding to the PDSCH group to which the PDSCH is associated is toggled, the terminal device 1 does not have to retransmit the HARQ-ACK bit. The terminal device 1 may delete the HARQ-ACK bit when the NFI bit corresponding to the PDSCH group to which the PDSCH is associated is toggled. That is, the terminal device 1 does not have to include the HARQ-ACK bit in the HARQ-ACK information after determining to delete the HARQ-ACK bit.

In the terminal device 1, the reporting status of the HARQ-ACK bit corresponding to the transport block included in the PDSCH is unreported for a certain PDSCH, and the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is toggled. If so, it is not necessary to determine that the HARQ-ACK bit corresponding to the transport block included in the PDSCH is correctly detected. That is, when the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is toggled, the terminal device 1 may transmit the HARQ-ACK bit. The terminal device 1 does not have to delete the HARQ-ACK bit when the NFI bit corresponding to the PDSCH group to which the PDSCH belongs is toggled. That is, the terminal device 1 may consider the HARQ-ACK bit when generating the HARQ-ACK codebook.

When it is determined that the HARQ-ACK bit corresponding to the transport block included in the PDSCH associated with one or more PDSCH groups among the PDSCH groups of the N _group is detected in the base station device 3, the terminal device 1 sets the terminal device 1. , It may be determined that the PUCCH or PUSCH to which the HARQ-ACK information including the HARQ-ACK bit is transmitted has been detected in the base station apparatus 3. When the HARQ-ACK bit corresponding to the transport block included in the PDSCH associated with any PDSCH group among the PDSCH groups of the N _group is not detected in the base station device 3, the terminal device 1 outputs the HARQ-ACK information. It may be determined that the containing PUCCH or PUSCH is not detected in the base station apparatus 3.

FIG. 12 is a diagram showing an example of reporting HARQ-ACK information according to one aspect of the present embodiment. In FIG. 12, shaded blocks indicate PDCCH, white blocks indicate PDSCH, and vertical blocks indicate PUCCH. Here, the DCI format used for scheduling PDSCH1111 is included in PDCCH1101, the DCI format used for scheduling PDSCH1112 is included in PDCCH1102, and the DCI format used for scheduling PDSCH1113 is included in PDCCH1103, and the PDSCH1114 The DCI format used for scheduling is included in PDCCH1104, and the DCI format used for scheduling PDSCH1115 is included in PDCCH1105. Here, according to the DCI format included in PDCCH1101, G1 is indicated as PGI and a numerical value is indicated as K1. Here, according to the DCI format included in PDCCH1102, G2 is indicated as PGI and non-numerical value is indicated as K1. Here, according to the DCI format included in PDCCH1103, G2 is indicated as PGI and a numerical value is indicated as K1. Here, the DCI format included in PDCCH1104 indicates G1 as PGI and non-numerical value as K1. Here, G1 is indicated as PGI by the DCI format included in PDCCH1105.

Here, the arrow directed from each of the PDSCHs shown in FIG. 12 to any of the PUCCHs indicates that the initial transmission of the HARQ-ACK bit corresponding to the transport block included in the PDSCH corresponding to the start point of the arrow is the said. It is shown that it is performed 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 the transmission of the PUCCH. Is not triggered by the DCI format used to schedule the PDSCH (timing K1 is non-numerical).

Here, the HARQ-ACK information 1131 is transmitted (reported) via PUCCH1121. The HARQ-ACK information 1131 includes at least the HARQ-ACK bit corresponding to the transport block included in the PDSCH 1111. Here, the resource of PUCCH1121 is specified at least based on the value of the PUCCH resource instruction field included in the DCI format included in PDCCH1101. Here, the timing K1 indicated by the DCI format included in the PDCCH 1111 is a numerical value.

Here, the HARQ-ACK information 1132 is transmitted (reported) via PUCCH1122. The HARQ-ACK information 1132 includes at least the HARQ-ACK bit corresponding to the transport block included in the PDSCH1113. Further, the HARQ-ACK information 1132 may include at least the HARQ-ACK bit corresponding to the transport block included in the PDSCH 1112. Here, for example, the PDSCH 1112 and the PDSCH group associated with the PDSCH 1113 may be the same. Here, the resource of PUCCH1122 is specified at least based on the value of the PUCCH resource instruction field included in the DCI format included in PDCCH1103.

Here, the HARQ-ACK information 1133 is transmitted (reported) via PUCCH1123. The HARQ-ACK information 1133 includes at least the HARQ-ACK bit corresponding to the transport block contained in the PDSCH1115. Further, the HARQ-ACK information 1133 may include at least the HARQ-ACK bit corresponding to the transport block included in the PDSCH1114. Here, for example, the PDSCH 1114 and the PDSCH group associated with the PDSCH 1115 may be the same. Here, the resource of PUCCH 1123 is specified at least based on the value of the PUCCH resource instruction field included in the DCI format included in PDCCH 1105.

The terminal device 1 inserts the HARQ-ACK bit corresponding to the transport block included in the PDSCH (for example, PDSCH1111) that satisfies at least a part or all of the conditions A1 to A4 into the HARQ-ACK information via the PUCCH1121. You may send (report).
-Condition A1: PGI is included in the request PDSCH group-Condition A2: The reporting status of HARQ-ACK information is unreported-Condition A3: The value of K1 associated is a numerical value, or the value of K1 associated is The value is non-numeric and the HARQ-ACK information has been postponed. Condition A4: The previously received NFI bit (ie, for the PDSCH group associated with the PDSCH containing the transport block corresponding to the HARQ-ACK information). , NFI bit) compared to the value, NFI is toggled

For example, the fact that the reporting status of the HARQ-ACK bit has not been reported may mean that the transmission of the HARQ-ACK bit has not been triggered. For example, the fact that the reporting status of the HARQ-ACK bit is unreported may mean that a new transmission of the HARQ-ACK bit has not been triggered. For example, the fact that the reporting state of the HARQ-ACK bit is not unreported may be a state in which the transmission of the HARQ-ACK bit has been triggered. For example, the fact that the reporting state of the HARQ-ACK bit is not unreported may mean that a new transmission of the HARQ-ACK bit has already been triggered. For example, the fact that the reporting status of the HARQ-ACK bit is not unreported may mean that the reporting status of the HARQ-ACK bit has already been reported.

The terminal device 1 receives the first PDSCH scheduled by the first DCI format and the second PDSCH scheduled by the second DCI format, and the first PUCCH or PUSCH via the first PUCCH or PUSCH. HARQ-ACK information including the HARQ-ACK bit corresponding to the transport block included in the PDSCH of the above and the HARQ-ACK bit corresponding to the transport block included in the second PDSCH is transmitted. The base station apparatus 3 transmits a first PDSCH scheduled by the first DCI format and a second PDSCH scheduled by the second DCI format, and the first PUCCH or the PUSCH via the first PUCCH or PUSCH. The HARQ-ACK bit including the HARQ-ACK bit corresponding to the transport block included in the PDSCH of 1 and the HARQ-ACK bit corresponding to the transport block included in the second PDSCH is received. In the procedure shown in FIGS. 9, 10, and 11 used to generate the HARQ-ACK codebook, the terminal device 1 is subjected to the first PDSCH based on at least a part or all of the conditions B1 to B2. It may be determined whether the corresponding C-DAI value is set to a predetermined value or indicated by the C-DAI field in the first DCI format. If the condition is at least satisfied, the C-DAI value corresponding to the first PDSCH may be set to a predetermined value (for example, 1). If at least the conditions are not met, the C-DAI value corresponding to the first PDSCH may be indicated by the C-DAI field in the first DCI format. Here, the condition B includes at least one or both of the condition B1 and the condition B2.
-Condition B1: A non-numeric value of K1 is indicated by the K1 field of the DCI format included in the first DCI format.-Condition B2: Compared to the value of the first NFI bit held in the terminal device 1. The second NFI bit indicated by the second DCI format was toggled

For example, as described above, by setting C-DAI to a predetermined value under certain conditions, efficient transmission of HARQ-ACK information can be realized.

The value of the first NFI bit may be indicated by the first DCI format. The value of the first NFI bit may be indicated by the DCI format detected before the second DCI format was received. The PDSCH group to which the second NFI bit corresponds may be equal to the PDSCH group to which the first NFI bit corresponds. After transmitting the first DCI format, the base station apparatus 3 may toggle the second NFI bit when the HARQ-ACK information corresponding to the PDSCH group is detected. The base station apparatus 3 does not have to toggle the second NFI bit if the HARQ-ACK information corresponding to the PDSCH group is not detected after transmitting the first DCI format. That is, the terminal device 1 has an NFI bit for the PDSCH group by comparing two NFI bits (for example, a first NFI bit and a second NFI bit) corresponding to one PDSCH group. You may decide whether to toggle. For example, the terminal device 1 has a value of the current NFI bit (ie, the second NFI bit) relative to the value of the previously received NFI bit (ie, the first NFI bit) for the PDSCH group. If the values are different, it may be determined that the NFI bit has been toggled. For example, the terminal device 1 has a value of the current NFI bit (ie, the second NFI bit) relative to the value of the previously received NFI bit (ie, the first NFI bit) for the PDSCH group. If the values are equal, it may be determined that the NFI bits are not toggled. The PDSCH group may be any PDSCH group among the PDSCH groups of the N _group . If it is determined that any of the NFI bits has been toggled, the terminal device 1 may consider that condition 2 is satisfied. The terminal device 1 may consider that condition 2 is satisfied when it is determined that the first PUCCH or PUSCH is detected in the base station device 3.

The terminal device 1 may receive the second DCI format in a slot after the slot that received the first DCI format. When the value shown in the PGI field of the first DCI format is equal to the value shown in the PGI field of the second DCI format, the terminal device 1 is based on at least a part or all of the conditions B1 to B2, and the first It may be determined whether the C-DAI value corresponding to the PDSCH of is set to a predetermined value or is indicated by the C-DAI field of the first DCI format. The base station device 3 may determine the C-DAI value corresponding to the first PDSCH in the same manner as the determination in the terminal device 1 described above. The base station apparatus 3 may determine the HARQ-ACK information corresponding to the first PDSCH from the HARQ-ACK bit corresponding to the determined C-DAI value from the received HARQ-ACK codebook. In this way, by setting C-DAI to a predetermined value under certain conditions, efficient transmission / reception of HARQ-ACK information can be realized.

FIG. 13 is a diagram showing an example of reporting HARQ-ACK information for a case where a certain PUCCH according to one aspect of the present embodiment is detected.

FIG. 14 is a diagram showing an example of reporting HARQ-ACK information when a certain PUCCH according to one aspect of the present embodiment is not detected.

In FIGS. 13 and 14, it is assumed that PUCCH1121 is not detected, and an example of processing in the terminal device 1 will be described for PDCCH1101, PDCCH1102, and PDCCH1103. If the NFI is not shown (received) before the PDSCH1111 is detected, the terminal device 1 keeps the stored NFI at the initial value (0,0). The terminal device 1 detects the PDCCH 1101, shows G1 as the PGI of the PDCCH 1111 scheduled by the DCI format included in the PDCCH 1101, shows G1 as the RPG, shows 1 as the C-DAI, and shows (0) as the receiving NFI. , 0) is shown. The terminal device 1 determines that the current NFI bit (ie, the received NFI bit) is not toggled for the PDSCH group G1 compared to the value of the previously received NFI bit (ie, the stored NFI bit). May be good. The terminal device 1 may set the HARQ-ACK reporting status corresponding to PDSCH1111 to unreported. The terminal device 1 determines that the current NFI bit (ie, the received NFI bit) is not toggled for the PDSCH group G2 compared to the value of the previously received NFI bit (ie, the stored NFI bit). May be good.

Here, the terminal device 1 detects the PDCCH 1102, G2 is shown as the PGI of the PDSCH 1112 scheduled by the DCI format included in the PDCCH 1102, 1 is shown as the C-DAI, and (0,0) is shown as the receiving NFI. Shown. The terminal device 1 may set the HARQ-ACK reporting status corresponding to PDSCH 1112 to unreported. The terminal device 1 detects the PDCCH 1103, shows G2 as the PGI of the PDSCH 1113 scheduled by the DCI format included in the PDCCH 1103, shows (G1, G2) as the RPG, shows 2 as the C-DAI, and receives. (0,0) is shown as NFI. The terminal device 1 may set the HARQ-ACK reporting status corresponding to PDSCH1113 to unreported. When the PUCCH1121 is transmitted, the terminal device 1 may set the HARQ-ACK reporting status corresponding to the PDSCH1111 to the already reported. The terminal device 1 detects PDCCH1104, G1 is shown as PGI, 2 is shown as C-DAI, and (0,0) is shown as NFI. The terminal device 1 may set the HARQ-ACK reporting status corresponding to PDSCH1114 to unreported.

In FIGS. 13 and 14, the HARQ-ACK bit corresponding to the transport block contained in the non-numeric K1 PDSCH 1112 at the time when the HARQ-ACK information 1132 transmitted (reported) via PUCCH 1122 is generated. Has already been postponed, and the HARQ-ACK bit corresponding to the transport block contained in the non-numeric K1 PDSCH1114 is to be postponed. When the terminal device 1 generates the HARQ-ACK information 1132, the postponed HARQ-ACK bit (for example, the HARQ-ACK bit corresponding to the transport block included in the PDSCH 112) may be included in the HARQ-ACK information. However, it is not necessary to include the HARQ-ACK bit to be postponed (for example, the HARQ-ACK bit corresponding to the transport block included in PDSCH1114) in the HARQ-ACK information.

In FIG. 13, it is assumed that PUCCH1122 is detected in the base station apparatus 3. The terminal device 1 detects PDCCH1105, G1 is shown as PGI, 2 is shown as C-DAI, and (1,1) is shown as NFI. The terminal device 1 may set the HARQ-ACK reporting status corresponding to PDSCH1115 to unreported. The terminal device 1 determines that the current NFI bit (ie, the received NFI bit) has been toggled for the PDSCH group G1 compared to the value of the previously received NFI bit (ie, the stored NFI bit). May be good. The terminal device 1 determines that the current NFI bit (ie, the received NFI bit) has been toggled for the PDSCH group G2 compared to the value of the previously received NFI bit (ie, the stored NFI bit). May be good. The terminal device 1 does not correspond to the HARQ-ACK reporting status corresponding to the PDSCH (that is, PDSCH1111) in which the HARQ-ACK bit is determined to be detected in the base station device 3 for the PDSCH group G1 (N / A). You may set it to. The terminal device 1 does not correspond to the HARQ-ACK reporting status corresponding to the PDSCH (that is, PDSCH 1112 and PDSCH 1113) in which the HARQ-ACK bit is determined to be detected in the base station device 3 with respect to the PDSCH group G2 (that is, it does not correspond to the HARQ-ACK reporting status It may be set to N / A). In the terminal device 1, the PUCCH (that is, PUCCH1122) to which the HARQ-ACK information including the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH1111, PDSCH1112, and PDSCH1113 is transmitted is detected by the base station device 3. You may judge that it was done. The terminal device 1 may ignore the C-DAI value indicated by the DCI format C-DAI field contained in the PDCCH 1104 for PDSCH 1114. The terminal device 1 may set the C-DAI value corresponding to PDSCH1114 to a predetermined value (for example, 1). The terminal device 1 includes a transport block included in the PDSCH1114 and a HARQ-ACK bit corresponding to the transport block included in the PDSCH1115, based on the procedures shown in FIGS. 9, 10, and 11. An ACK codebook may be generated. In the procedure, the C-DAI value corresponding to PDSCH1114 may be a predetermined value. Here, the C-DAI value may be 1. The terminal device 1 may transmit (report) HARQ-ACK information 1133 including the HARQ-ACK codebook via PUCCH 1123.

That is, in the terminal device 1, the receiving NFI corresponding to the PDSCH is toggled in comparison with the value of the NFI held in the terminal device 1, and the PDSCH corresponds to the non-numerical value K1. Alternatively, based on at least both, the HARQ-ACK codebook may be generated assuming that the C-DAI corresponding to the PDSCH is a predetermined value (for example, 1).

In FIG. 14, it is assumed that PUCCH1122 is not detected in the base station apparatus 3. The terminal device 1 detects PDCCH1105, G1 is shown as PGI, 3 is shown as C-DAI, and (0,0) is shown as NFI. The terminal device 1 may set the HARQ-ACK reporting status corresponding to PDSCH1115 to unreported. The terminal device 1 determines that the current NFI bit (ie, the received NFI bit) is not toggled for the PDSCH group G1 compared to the value of the previously received NFI bit (ie, the stored NFI bit). May be good. The terminal device 1 determines that the current NFI bit (ie, the received NFI bit) is not toggled for the PDSCH group G2 compared to the value of the previously received NFI bit (ie, the stored NFI bit). May be good. The terminal device 1 may determine that PUCCH1122 is not detected in the base station device 3. The terminal device 1 may have a C-DAI value corresponding to PDSCH1114 indicated by a DCI-formatted C-DAI field contained in PDCCH1104. Based on the procedure shown in FIGS. 9, 10, and 11, the terminal device 1 has a HARQ corresponding to the transport block included in the PDSCH 1112 and the transport block included in the PDSCH 1113 for the PDSCH group G2. A second HARQ-ACK codebook containing the -ACK bit may be generated. The terminal device 1 has a transport block included in PDSCH 1111 and a transport block included in PDSCH 1114, and PDSCH 1115 with respect to the PDSCH group G1 based on the procedure shown in FIGS. 9, 10, and 11. A first HARQ-ACK codebook containing the HARQ-ACK bits corresponding to the transport blocks contained in may be generated. In this procedure, the C-DAI value corresponding to PDSCH1114 may be indicated by the DCI format C-DAI field contained in PDCCH1104. Here, the C-DAI value is 2. The terminal device 1 may transmit (report) the first HARQ-ACK codebook and the HARQ-ACK information 1133 including the second HARQ-ACK codebook via PUCCH1123. Here, the transmission of the HARQ-ACK bit corresponding to the transport block included in the PDSCH whose reporting status has already been reported (that is, PDSCH1111 and PDSCH1112, and PDSCH1113) is a retransmission. Here, the transmission of the HARQ-ACK bit corresponding to the transport block included in the PDSCH (that is, PDSCH 1114 and PDSCH 1115) whose reporting status has already been reported is a new transmission.

One aspect of the present invention can realize efficient communication. One aspect of the present invention can realize efficient transmission / reception of HARQ-ACK information. One aspect of the present invention can realize efficient transmission / reception of a HARQ-ACK codebook. One aspect of the present invention can control the size of the HARQ-ACK codebook according to the C-DAI and realize efficient communication. For example, in a situation where the transmission of HARQ-ACK to a PDSCH belonging to the same PDSCH group is postponed (waiting) before the HARQ-ACK codebook of a certain PDSCH group is detected by the base station apparatus 3. By making the value of C-DAI for the PDSCH determined according to the situation of whether or not the HARQ-ACK codebook is detected, the subsequent HARQ-ACK codebooks of the PDSCH group can be determined. The size can be properly controlled. If the previously transmitted HARQ-ACK codebook is not detected, the HARQ-ACK information contained in the undetected HARQ-ACK codebook and the newly transmitted HARQ-ACK information are combined with the next transmitted HARQ-ACK. The value of C-DAI is determined so that it can be included in the codebook. If a previously transmitted HARQ-ACK codebook is detected, the HARQ-ACK information contained in the detected HARQ-ACK codebook is not included, and only the newly transmitted HARQ-ACK information is the next transmitted HARQ-. The value of C-DAI is determined so that it can be included in the ACK codebook. The latter C-DAI value is smaller than the former C-DAI value, and the resource utilization efficiency can be improved by reducing the size of the HARQ-ACK codebook. When the base station apparatus 3 can detect the HARQ-ACK codebook for a certain PDSCH group, it becomes possible to reset and control the cumulative number of C-DAI for the next HARQ-ACK codebook. The size of the HARQ-ACK codebook can be reduced appropriately.

Hereinafter, aspects of various devices according to one aspect of the present embodiment will be described.

(1) In order to achieve the above object, the aspect of the present invention has taken the following measures. That is, the first aspect of the present invention is a terminal device for receiving a first PDSCH scheduled by a first DCI format and a second PDSCH scheduled by a second DCI format. A unit and a transmission unit that transmits (reports) HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH via the PUCCH or the PUSCH, and if the conditions are satisfied, the first The C-DAI value corresponding to the PDSCH of 1 is set to a predetermined value, and when the above conditions are not satisfied, the C-DAI value corresponding to the first PDSCH is the C-DAI of the first DCI format. The condition is indicated by a field, the condition 1 is a non-numeric value of K1 indicated by the K1 field of the DCI format included in the first DCI format, and condition 2 is a first held in the terminal device. Includes that the second NFI bit indicated by the second DCI format includes part or all of the toggled, as compared to the value of the NFI bit.

(2) A second aspect of the present invention includes a terminal device in which the value of the first NFI bit held in the terminal device is indicated by the first DCI format.

(3) A third aspect of the present invention is a base station apparatus that transmits a first PDSCH scheduled by a first DCI format and a second PDSCH scheduled by a second DCI format. A receiver that receives HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH via the PUCCH or the PUSCH, and if the condition is satisfied, the first The C-DAI value corresponding to the PDSCH of is set to a predetermined value, and if the above conditions are not satisfied, the C-DAI value corresponding to the first PDSCH is the C-DAI field of the first DCI format. The condition 1 is indicated by a non-numeric value of K1 by the K1 field of the DCI format included in the first DCI format, the condition 2 being compared to the value of the first NFI bit. The second NFI bit indicated by the second DCI format includes a part or all of the toggled.

(4) A fourth aspect of the present invention includes a base station apparatus in which the value of the first NFI bit is indicated by the first DCI format.

According to the above embodiment according to one aspect of the present invention, the transmission and reception of HARQ-ACK information between the terminal device 1 and the base station device 3 can be appropriately realized. It is appropriate to appropriately control the HARQ-ACK information not detected in the base station device 3 to be retransmitted by the terminal device 1 and not to retransmit the HARQ-ACK information detected in the base station device 3 by the terminal device 1. By controlling to, one aspect of the present invention can realize efficient communication.

The program operating in the base station device 3 and the terminal device 1 according to one aspect of the present invention controls a CPU (Central Processing Unit) or the like so as to realize the functions of the above embodiment related to one aspect of the present invention. It may be a program (a program that makes a computer function). Then, the information handled by these devices is temporarily stored in RAM (Random Access Memory) at the time of processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). If necessary, the CPU reads, corrects, and writes.

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

The "computer system" referred to here is a computer system built in the terminal device 1 or the base station device 3, and includes hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system.

Furthermore, a "computer-readable recording medium" is a medium that dynamically holds a program for a short period of time, such as a communication line when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In that case, a program may be held for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client. Further, the above-mentioned program may be a program for realizing a part of the above-mentioned functions, and may be a program for realizing the above-mentioned functions in combination with a program already recorded in the computer system.

The terminal device 1 may consist of at least one processor and at least one memory including a computer program instruction (computer program). The memory and the computer program instruction (computer program) may be configured such that the terminal device 1 performs the operations and processes described in the above-described embodiment by using a processor. The base station apparatus 3 may consist of at least one processor and at least one memory including computer program instructions (computer programs). The memory and the computer program instruction (computer program) may be configured such that the base station apparatus 3 performs the operations and processes described in the above-described embodiment by using a processor.

Further, the base station device 3 in the above-described embodiment can also be realized as an aggregate (device group) composed of a plurality of devices. Each of the devices constituting the device group may include a part or all of each function or each function block of the base station device 3 according to the above-described embodiment. As the device group, it suffices to have each function or each function block of the base station device 3. Further, the terminal device 1 according to the above-described embodiment can also communicate with the base station device as an aggregate.

Further, the base station device 3 in the above-described embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGen RAN, NR RAN). Further, the base station apparatus 3 in the above-described embodiment may have a part or all of the functions of the upper node with respect to the eNodeB and / or the gNB.

Further, a part or all of the terminal device 1 and the base station device 3 in the above-described embodiment may be realized as an LSI which is typically an integrated circuit, or may be realized as a chipset. Each functional block of the terminal device 1 and the base station device 3 may be individually chipped, or a part or all of them may be integrated into a chip. Further, the method of making an integrated circuit is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. Further, when an integrated circuit technology that replaces an LSI appears due to advances in semiconductor technology, it is also possible to use an integrated circuit based on this technology.

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

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like within a range not deviating from the gist of the present invention are also included. In addition, one aspect of the present invention can be variously modified within the scope of the claims, and the technical aspects of the present invention are also obtained by appropriately combining the technical means disclosed in the different embodiments. Included in the range. In addition, the elements described in each of the above-described embodiments include a configuration in which elements having the same effect are replaced with each other.

One aspect of the present invention is used, for example, in a communication system, a communication device (for example, a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (for example, a communication chip), a program, or the like. be able to.

1 (1A, 1B, 1C) Terminal device 3 Base station device 10, 30 Wireless transmission / reception section 11, 31 Antenna section 12, 32 RF section 13, 33 Base band section 14, 34 Upper layer Processing section 15, 35 Media access control layer Processing unit 16, 36 Radio resource control layer Processing unit 91, 92, 93, 94 Search area set 301 Primary cell 302, 303 Secondary cell 801, 802, 803, 804, 805, 806 Monitoring opportunity of search area set 811, 812, 813, 814 DCI format 1101, 1102, 1103, 1104, 1105 PDCCH
1111, 1112, 1113, 1114, 1115 PDSCH
1121, 1122, 1123 PUCCH

Claims (6)

1. A receiver that receives a first PDSCH scheduled by the first DCI format and a second PDSCH scheduled by the second DCI format.
   A transmission unit for transmitting (reporting) HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH via the PUCCH or the PUSCH is provided.
   When the condition is satisfied, the C-DAI value corresponding to the first PDSCH is set to a predetermined value.
   If the above conditions are not met, the C-DAI value corresponding to the first PDSCH is indicated by the C-DAI field of the first DCI format.
   The above conditions are
   Condition 1: A non-numeric K1 value is indicated by the K1 field of the DCI format included in the first DCI format. Condition 2: Compared with the value of the first NFI bit held in the terminal device, the first A terminal device that includes some or all of the second NFI bits toggled, as indicated by the DCI format of 2.
2. The terminal device according to claim 1, wherein the value of the first NFI bit held in the terminal device is indicated by the first DCI format.
3. A transmitter that transmits a first PDSCH scheduled by the first DCI format and a second PDSCH scheduled by the second DCI format.
   A receiving unit for receiving HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH via the PUCCH or the PUSCH.
   When the condition is satisfied, the C-DAI value corresponding to the first PDSCH is set to a predetermined value.
   If the above conditions are not met, the C-DAI value corresponding to the first PDSCH is indicated by the C-DAI field of the first DCI format.
   The above conditions are
   Condition 1: A non-numeric K1 value is indicated by the K1 field of the DCI format included in the first DCI format Condition 2: Compared to the value of the first NFI bit, it is indicated by the second DCI format. A base station device that includes some or all of the second NFI bit toggled.
4. The base station apparatus according to claim 3, wherein the value of the first NFI bit is indicated by the first DCI format.
5. A communication method used for terminal devices.
   Receives a first PDSCH scheduled by the first DCI format and a second PDSCH scheduled by the second DCI format.
   HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH is transmitted (reported) via the PUCCH or the PUSCH, and the HARQ-ACK information is transmitted (reported).
   When the condition is satisfied, the C-DAI value corresponding to the first PDSCH is set to a predetermined value.
   If the above conditions are not met, the C-DAI value corresponding to the first PDSCH is indicated by the C-DAI field of the first DCI format.
   The above conditions are
   Condition 1: A non-numeric value of K1 is indicated by the K1 field of the DCI format included in the first DCI format. Condition 2: Compared with the value of the first NFI bit held in the terminal device, the first A communication method comprising a part or all of a toggled second NFI bit, as indicated by the DCI format of 2.
6. A communication method used for base station equipment.
   The first PDSCH scheduled by the first DCI format and the second PDSCH scheduled by the second DCI format are transmitted.
   The HARQ-ACK information corresponding to each of the first PDSCH and the second PDSCH is received via the PUCCH or the PUSCH, and the HARQ-ACK information is received.
   When the condition is satisfied, the C-DAI value corresponding to the first PDSCH is set to a predetermined value.
   If the above conditions are not met, the C-DAI value corresponding to the first PDSCH is indicated by the C-DAI field of the first DCI format.
   The above conditions are
   Condition 1: A non-numeric K1 value is indicated by the K1 field of the DCI format included in the first DCI format Condition 2: Compared to the value of the first NFI bit, it is indicated by the second DCI format. A communication method comprising including a part or all of a toggled second NFI bit.

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