JP7425559B2 - Terminal device and communication method - Google Patents

Description

The present invention relates to a terminal device and a communication method.

Wireless access methods and wireless networks for cellular mobile communications (hereinafter referred to as “Long T
erm Evolution (LTE)” or “EUTRA: Evolved U
Universal Terrestrial Radio Access. ) is being considered in the 3rd Generation Partnership Project (3GPP). In LTE, a base station device is also called an eNodeB (evolved NodeB), and a terminal device is also called a UE (User Equipment). LTE is a cellular communication system in which a plurality of areas covered by base station devices are arranged in a cell shape. A single base station device may manage multiple serving cells.

In 3GPP, the next generation standard (NR: Consideration of New Radio) (Non-patent Document 1). NR combines eMBB (enhanced Mobile Broadband), mMTC (massive Mach
ine Type Communication), URLLC (Ultra Relia
There is a need to satisfy the requirements assuming three scenarios: low latency and low latency communication.

Further, the application of NR to unlicensed frequency bands (Unlicensed Spectrum) is being considered (Non-Patent Document 2). It is being considered to apply NR that supports a wide band of 100 MHz to carriers in unlicensed frequency bands to achieve data rates of several Gbps.

"New SID proposal: Study on New Radio Access Technology", RP-160671, NTT docomo, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th-10th March, 2016. "New WID on NR-based Access to Unlicensed Spectrum", RP-182878, Qualcomm Incorporated, 3GPP TSG RAN Meeting #82, Sorrento, Italy, 10th - 13th December, 2018. "3GPP TS 38.211 V15.5.0 (2019-03), NR; Physical channels and modulation". "3GPP TS 38.212 V15.5.0 (2019-03), NR; Multiplexing and channel coding". "3GPP TS 38.213 V15.5.0 (2019-03), NR; Physical layer procedures for control". "3GPP TS 38.214 V15.5.0 (2019-03), NR; Physical layer procedures for data".

The present invention provides a terminal device that can efficiently perform uplink transmission and/or receive downlink transmission, a communication method used for the terminal device, and an efficient downlink transmission and/or uplink transmission method. A base station device capable of receiving transmissions and a communication method used in the base station device are provided.

(1) A first aspect of the present invention is a terminal device that receives a PDSCH scheduled by a DL grant and an SPS PDSCH, and receives a first HARQ-corresponding to the PDSCH scheduled by the DL grant. a receiving unit that receives a PDCCH including a DCI format that triggers transmission of ACK information and second HARQ-ACK information corresponding to the SPS PDSCH, the first HARQ-ACK information, and the second HARQ-ACK information; - a transmitting unit that transmits a PUCCH including ACK information, wherein the first HARQ process ID included in the DCI format and the value of the first NDI field correspond to the first HARQ-ACK information. include the first HARQ-ACK information in the PUCCH, and the HARQ process ID and the value of the first NDI field are equal to the stored HARQ process ID and the stored NDI value; is different from the stored HARQ process ID and the stored NDI value, the first HARQ-ACK information is not included in the PUCCH, and the second HARQ-ACK information included in the DCI format is If the HARQ process ID is equal to the HARQ process ID stored for the second HARQ-ACK information and the value of the second NDI field is set to 0, the second HARQ - Include ACK information in the PUCCH.

(2) A second aspect of the present invention is a base station device that transmits a PDSCH scheduled by a DL grant and an SPS PDSCH, and transmits a first HARQ corresponding to the PDSCH scheduled by the DL grant. - a transmitter for transmitting a PDCCH including a DCI format that triggers transmission of ACK information and second HARQ-ACK information corresponding to the SPS PDSCH, the first HARQ-ACK information and the second HARQ-ACK information; a receiving unit that receives a PUCCH including HARQ-ACK information, and a first HARQ process ID included in the DCI format and a value of a first NDI field are included in the first HARQ-ACK information. If the stored HARQ process ID and the stored NDI value are equal to each other, the first HARQ-ACK information is included in the PUCCH, and the HARQ process ID and the first NDI field are equal. If the stored HARQ process ID and the stored NDI value are different, the first HARQ-ACK information is not included in the PUCCH, and the second HARQ-ACK information included in the DCI format is is equal to the HARQ process ID stored for the second HARQ-ACK information, and the value of the second NDI field is set to 0. HARQ-ACK information is included in the PUCCH.

(3) A third aspect of the present invention is a communication method used in a terminal device, which receives a PDSCH scheduled by a DL grant and an SPS PDSCH, and corresponds to the PDSCH scheduled by the DL grant. receiving a PDCCH including a DCI format that triggers transmission of first HARQ-ACK information and second HARQ-ACK information corresponding to the SPS PDSCH; and transmitting a PUCCH including second HARQ-ACK information, wherein the first HARQ process ID included in the DCI format and the value of the first NDI field are the first HARQ-ACK information. If the HARQ process ID stored for the information is equal to the stored NDI value, the first
includes HARQ-ACK information in the PUCCH, and when the HARQ process ID and the value of the first NDI field are different from the stored HARQ process ID and the stored NDI value, , the first HARQ-ACK information is not included in the PUCCH, and a second HARQ process ID included in the DCI format is equal to a HARQ process ID stored for the second HARQ-ACK information; and when the value of the second NDI field is set to 0, the second HARQ-ACK information is included in the PUCCH.

(4) A fourth aspect of the present invention is a communication method used in a base station device, which transmits a PDSCH scheduled by a DL grant and an SPS PDSCH, and supports the PDSCH scheduled by the DL grant. transmitting a PDCCH including a DCI format that triggers transmission of first HARQ-ACK information corresponding to the SPS PDSCH and second HARQ-ACK information corresponding to the SPS PDSCH; and the first HARQ-ACK information; and receiving a PUCCH including the second HARQ-ACK information, wherein the first HARQ process ID included in the DCI format and the value of the first NDI field are the first HARQ-ACK information. If the HARQ process ID stored for the ACK information is equal to the stored NDI value, the first HARQ-ACK information is included in the PUCCH, and the HARQ process ID and the first If the stored HARQ process ID and the stored NDI value are different from each other, the first HARQ-ACK information is not included in the PUCCH and is included in the DCI format. the second HARQ process ID stored for the second HARQ-ACK information is equal to the HARQ process ID stored for the second HARQ-ACK information, and the value of the second NDI field is set to 0; Second HARQ-ACK information is included in the PUCCH.

According to this invention, the terminal device can communicate efficiently. Furthermore, the base station device can communicate efficiently.

FIG. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. 3 is an example showing the relationship among N ^slot _symb , subcarrier interval setting μ, slot setting, and CP setting according to one aspect of the present embodiment. FIG. 2 is a schematic diagram illustrating an example of a resource grid in a subframe according to an aspect of the present embodiment. FIG. 1 is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of the present embodiment. 1 is a schematic block diagram showing the configuration of a base station device 3 according to one aspect of the present embodiment. FIG. FIG. 3 is a diagram showing an example of reception of SPS PDSCH in this embodiment. FIG. 7 is a diagram illustrating an example of a type 3 HARQ-ACK codebook when an SPS PDSCH is not configured in this embodiment. 2 is a diagram illustrating an example of a report of HARQ-ACK information corresponding to a PDSCH scheduled by a DL grant and an SPS PDSCH when an SPS PDSCH is configured in the terminal device 1 in this embodiment. FIG. FIG. 3 is a diagram illustrating an example of reporting HARQ-ACK information for SPS PDSCH deactivation and HARQ trigger bits in this embodiment.

Embodiments of the present invention will be described below.

“A and/or B” may be a term that includes “A”, “B”, or “A and B”.

A parameter or information indicating one or more values may mean that the parameter or information at least includes 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) including multiple parameters.

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

The base station device 3 may be configured to include one or both of an MCG (Master Cell Group) and an SCG (Secondary Cell Group). The MCG is a group of serving cells including at least a PCell (Primary Cell). SCG is at least PSCell (Primary S
This is a group of serving cells that includes secondary cells. P
Cell may be a serving cell provided based on 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. A serving cell identity is a short identifier for identifying a serving cell. The serving cell identifier may be given by higher layer parameters.

The frame configuration will be explained below.

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

Subcarrier spacing (SCS) may be given by subcarrier spacing Δf=2 ^μ ·15 kHz. For example, subcarrier spacing configuration μ may be set to 0, 1, 2, 3, 4, and/or 5. For a certain BWP (Band Width Part), the subcarrier spacing setting μ may be given by an upper layer parameter.

In the wireless communication system according to one aspect of the present embodiment, a time unit (time unit) _Tc 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 subcarrier spacing supported in the wireless communication system according to one aspect of the present embodiment. Δf _max may be Δf _max =480kHz. 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 15kHz. N _f,ref may be 2048.

The constant κ may be a value indicating the relationship between the reference subcarrier interval and T _c . A constant κ may be used for the subframe length. The number of slots included in a subframe may be given based at least on the constant κ. Δf _ref is a reference subcarrier interval, and N _f,ref is a value corresponding to the reference subcarrier interval.

Transmission on the downlink and/or transmission on the uplink consists of 10 ms frames. A frame includes 10 subframes. The length of a subframe is 1 ms. The frame length may be given regardless of the subcarrier interval Δf. In other words, the frame settings may be given regardless of μ. The length of the subframe may be given regardless of the subcarrier interval Δf. In other words, the subframe settings may be given regardless of μ.

For a certain subcarrier spacing setting μ, the number and index of slots included in the subframe may be given. For example, the first slot number n ^μ _s may be given in ascending order within the subframe in the range from 0 to N ^{subframe, μ} _slot −1. For the subcarrier spacing setting μ, the number and index of slots included in the frame may be given. For example, the second slot numbers n ^μ _s,f may be given in ascending order within the frame in the range from 0 to N ^{frame, μ} _slot −1. N ^slot _sym consecutive OFDM symbols may be included in one slot. N ^slot _symb may be provided based on at least part or all of slot configuration and/or CP (Cyclic Prefix) configuration. The slot configuration may be given by at least the upper layer parameter tdd-UL-DL-ConfigurationCommon. The CP settings may be provided based at least on upper layer parameters. CP configuration may be provided based at least on dedicated RRC signaling. The first slot number and the second slot number are also called slot numbers (slot index).

FIG. 2 is an example showing the relationship among N ^slot _symb , subcarrier interval setting μ, slot setting, and CP setting according to one aspect of the present embodiment. In FIG. 2A, when the slot setting is 0, 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, when the slot setting is 0, the subcarrier interval setting μ is 2, and the CP setting is extended cyclic prefix (CP), N ^slot _symb = 12, N ^{frame, μ} _slot = 40, N ^{subframe, μ} _slot =4. N ^slot _symbs in slot setting 0 may correspond to twice the N ^slot _symbs in slot setting 1.

The physical resources will be explained below.

Antenna ports are defined in that the channel over which a symbol is conveyed at one antenna port can be estimated from the channel over which other symbols are conveyed at the same antenna port. If the large scale properties of the channel over which symbols are conveyed at one antenna port can be estimated from the channel over which symbols are conveyed at another antenna port, then the two antenna ports are called Quasi Co-Located (QCL). ) is called. The large-scale characteristics may include at least long-range characteristics of the channel. The large-scale characteristic is delay spread (delay sp
read), Doppler spread, Doppler shift (
Doppler shift), average gain, average delay, and beam parameters (spatial Rx para
may include at least some or all of the following: The fact that the first antenna port and the second antenna port are QCL with respect to beam parameters means that the receive beam that the receiving side assumes for the first antenna port and the receive beam that the receiving side assumes for 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 beam parameters means that the transmission beam that the receiving side assumes for the first antenna port and the transmission beam that the receiving side assumes for the second antenna port. may be the same. The terminal device 1 assumes that the two antenna ports are QCL if the large-scale characteristics of the channel in which symbols are transmitted in one antenna port can be estimated from the channel in which symbols are transmitted in another antenna port. may be done. Two antenna ports being QCL may mean that two antenna ports are assumed to be QCL.

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

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

Each element in the resource grid provided for each first radio parameter set is called a resource element. A resource element is specified by an index k _sc in the frequency domain and an index l _sym in the time domain. For a certain first radio parameter set, a resource element is identified by an index k _sc in the frequency domain and an index l _sym in the time domain. 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 μ of subcarrier spacing. N ^RB _sc is the number of subcarriers included in the resource block, and N ^RB _sc =12. The frequency domain index _ksc may correspond to the subcarrier index _ksc . The time domain index l _sym may correspond to the OFDM symbol index l _sym .

FIG. 3 is a schematic diagram illustrating an example of a resource grid in a subframe according to an aspect of the present embodiment. In the resource grid of FIG. 3, the horizontal axis is the index l _sym in the time domain, and the vertical axis is the index k _sc in the frequency domain. In one subframe, the frequency domain of the resource grid includes N ^μ _RB N ^RB _sc subcarriers. In one subframe, the time domain of the resource grid may include 14·2 ^μ OFDM symbols. One resource block is configured to include N ^RB _sc subcarriers. The time domain of a resource block may correspond to one OFDM symbol. The time domain of a resource block may correspond to 14 OFDM symbols. A time domain of a resource block may correspond to one or more slots. The time domain of a resource block may correspond to one subframe.

The terminal device 1 may be instructed to perform transmission and reception using only a subset of the resource grid. A subset of the resource grid may also be referred to as a BWP, and the BWP may be provided based on at least some or all of the upper layer parameters and/or the DCI. BWP is also referred to as a band part (BP: Bandwidth Part). In other words, the terminal device 1 does not need to be instructed to perform transmission and reception using all sets of resource grids. That is, the terminal device 1 may be instructed to perform transmission and reception using some frequency resources within the resource grid. One BWP may be composed of multiple resource blocks in the frequency domain. One BWP may be composed of a plurality of consecutive resource blocks in the frequency domain. BWP configured for a downlink carrier is also referred to as downlink BWP. BWP configured for uplink carriers is also called uplink BWP.

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

One or more uplink BWPs may be configured for the terminal device 1. The terminal device 1 may attempt to transmit a physical channel (for example, PUCCH, PUSCH, PRACH, etc.) in one uplink BWP of one or more uplink BWPs. The one uplink BWP is also called an activated uplink BWP.

A set of downlink BWPs may be configured for each serving cell. The set of downlink BWPs may include one or more downlink BWPs. A set of uplink BWPs may be configured for each serving cell. The set of uplink BWPs may include one or more uplink BWPs.

The upper layer parameter is a parameter included in the upper layer signal. The upper layer signal may be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Control Element). Here, the upper layer signal may be an RRC layer signal or a MAC layer signal.

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

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

The upper layer signals may be dedicated RRC signaling. Dedicated RRC signaling may comprise at least some or all of the following features D1 to D2.
Feature D1) Includes at least a Feature D2) radioResourceConfigDedicated information element mapped to the DCCH logical channel

The radioResourceConfigDedicated information element may include at least information indicating settings specific to the terminal device 1. The radioResourceConfigDedicated information element may include at least information indicating BWP settings. The configuration of the BWP may at least indicate frequency resources of the BWP.

For example, the MIB, the first system information, and the second system information may be included in common RRC signaling. Further, an upper layer message that is mapped to the DCCH logical channel and includes at least radioResourceConfigCommon may be included in common RRC signaling. Additionally, upper layer messages that are mapped to the DCCH logical channel and do not include the radioResourceConfigCommon information element may be included in dedicated RRC signaling. Additionally, an upper layer message that is mapped to the DCCH logical channel and includes at least the radioResourceConfigDedicated information element may be included in the dedicated RRC signaling.

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

The radioResourceConfigDedicated information element may include at least information related to PRACH resources. The radioResourceConfigDedicated information element may include at least information related to initial connection setup.

Hereinafter, physical channels and physical signals according to various aspects of this embodiment will be explained.

An uplink physical channel may correspond to a set of resource elements carrying information originating in upper layers. The uplink physical channel is a physical channel used in an 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 includes channel state information (CSI), scheduling request (SR), transport block (TB), and medium access controller (MAC PDU). ol Protocol Data Unit, DL-SCH:Downlink -Shared Channel, HARQ-ACK (Hybrid Au
(Repeat request ACKknowledgement).

HARQ-ACK may include at least HARQ-ACK bits (HARQ-ACK information) corresponding to at least one transport block. The HARQ-ACK bit is an ACK (acknowledgment) or a NACK (negative-acknowledgment) corresponding to one or more transport blocks.
may also be shown. HARQ-ACK may include at least a HARQ-ACK codebook that includes one or more HARQ-ACK bits. The HARQ-ACK bits corresponding to one or more transport blocks may mean that the HARQ-ACK bits correspond to a PDSCH including 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) may be used at least to request PUSCH resources for initial transmission. The scheduling request bit may be used to indicate either positive SR (positive SR) or 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 requests PUSCH resources for initial transmission. A positive SR may indicate that the scheduling request is triggered by an upper layer. A positive SR may be sent when directed to send a scheduling request by an upper layer. 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 request PUSCH resources for initial transmission. A negative SR may indicate that no scheduling request is triggered by the upper layer. A negative SR may be sent if no scheduling request is directed to be sent by the upper layer.

The channel state information may include at least some or all of a channel quality indicator (CQI), a precoder matrix indicator (PMI), and a rank indicator (RI). CQI is a measure related to the quality of the channel (eg, propagation strength), and PMI is a measure that directs the precoder. RI is an index indicating the transmission rank (or the number of transmission layers).

PUCCH may support one or more PUCCH formats (PUCCH format 0 to PUCCH format 4). The PUCCH format may be mapped to PUCCH and transmitted. PUCCH format may be transmitted on PUCCH. Transmitting a PUCCH format may mean transmitting a PUCCH.

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

PRACH is used at least to transmit a random access preamble (Random Access Message 1). PRACH is used for initial connection establishment procedures, handover procedures, connection re-establishment procedures, synchronization (timing adjustment) for PUSCH transmission, and some or all of the requests for resources for PUSCH. may be used to indicate at least The random access preamble may be used to notify the base station device 3 of an index (random access preamble index) given from an upper layer of the terminal device 1.

In FIG. 1, the following uplink physical signals are used in uplink wireless communication. Uplink physical signals may not be used to transmit information output from higher layers, but are used by the physical layer.
・UL DMRS (UpLink Demodulation Reference Si)
gnal)
・SRS (Sounding Reference Signal)
・UL PTRS (UpLink Phase Tracking Reference Signal)

UL DMRS is related to PUSCH and/or PUCCH transmission. UL
DMRS is multiplexed with PUSCH or PUCCH. The base station device 3 may use UL DMRS to correct the propagation path of PUSCH or PUCCH. Hereinafter, transmitting the PUSCH and the UL DMRS related to the PUSCH together will be simply referred to as transmitting the PUSCH. Hereinafter, transmitting the PUCCH and the UL DMRS related to the PUCCH together will be simply referred to as transmitting the 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 may not be related to PUSCH or PUCCH transmission. The base station device 3 may use SRS to measure channel conditions. The SRS may be transmitted at the end of a subframe in an uplink slot or in a predetermined number of OFDM symbols from the end.

The UL PTRS may be a reference signal used at least for phase tracking. A UL PTRS may be associated with a UL DMRS group that includes at least one antenna port used for one or more UL DMRSs. The association between the UL PTRS and the UL DMRS group may mean that at least some or all of the antenna ports of the UL PTRS and the antenna ports included in the UL DMRS group are QCLs. The UL DMRS group may be identified based at least on the antenna port with the lowest index among the UL DMRSs included in the UL DMRS group. The UL PTRS may be mapped to the lowest index antenna port among the antenna ports to which one codeword is mapped. UL P
A TRS may be mapped to a first layer if one codeword is mapped to at least a first layer and a second layer. UL PTRS may not be mapped to the second layer. The index of the antenna port to which the UL PTRS is mapped may be given based on at least the downlink control information.

In FIG. 1, the following downlink physical channels are used in 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 information output from higher layers.
・PBCH (Physical Broadcast Channel)
・PDCCH (Physical Downlink Control Channel)
・PDSCH (Physical Downlink Shared Channel)

PBCH is a master information block (MIB).
rmation Block, BCH, Broadcast Channel). PBCH may be transmitted based on predetermined transmission intervals. PBCH may be transmitted at 80ms intervals. PBCH may be transmitted at 160ms intervals. The content of the information included in the PBCH may be updated every 80ms. Some or all of the information included in the PBCH may be updated every 160ms. PBCH may be configured with 288 subcarriers. A 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 part of the slot number, subframe number, and/or radio frame number in which the PBCH is transmitted.

PDCCH is used at least for transmitting downlink control information (DCI). PDCCH may be transmitted including at least downlink control information. PDCCH may include downlink control information. Downlink control information is also called DCI format. The downlink control information may include at least either a downlink grant (DL grant) or an uplink grant (UL grant). The DCI format used for PDSCH scheduling is also called the downlink DCI format. The DCI format used for PUSCH scheduling is also called the uplink DCI format. The downlink grant is also referred to as downlink assignment (DL assignment) or downlink allocation (DL allocation). The uplink DCI format includes at least one or both of DCI format 0_0 and DCI format 0_1.

DCI format 0_0 is configured to include at least some or all of 1A to 1F.
1A) Identifier for DCI formats field
1B) Frequency domain resource assignment field
1C) Time domain resource allocation field
assignment field)
1D) Frequency hopping flag field
1E) MCS field: Modulation and Codi
ng Scheme field)
1F) First CSI request field
ld)

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

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

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

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

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

The first CSI request field is used at least to indicate reporting of CSI. The size of the first CSI request field may be a predetermined value. The size of the first CSI request field may be 0, 1, 2, or 3.

DCI format 0_1 is configured to include at least some or all of 2A to 2G.
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) Second CSI request field
eld)
2G) BWP field

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

The second CSI request field is used at least to indicate CSI reporting. The size of the second CSI request field may be given based on at least 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 some or all of 3A to 3H.
3A) Identifier for DCI formats field
3B) Frequency domain resource assignment field
3C) Time domain resource allocation field
assignment field)
3D) Frequency hopping flag field
3E) MCS field (MCS field: Modulation and Coding Scheme field)
3F) First CSI request field
ld)
3G) PDSCH-to-HARQ feedback timing indicator field
3H) PUCCH resource indicator field

The timing indication field from PDSCH to HARQ feedback may be a field indicating timing K1. When the index of the slot in which the last OFDM symbol of the PDSCH is included is slot n, the index of the slot in which the PUCCH or PUSCH containing at least the HARQ-ACK corresponding to the transport block included in the PDSCH is included is n+K1; Good too. When the index of the slot in which the last OFDM symbol of the PDSCH is included is slot n, the first OFDM symbol of the PUCCH or the first OFDM symbol of the PUSCH that includes at least the HARQ-ACK corresponding to the transport block included in the PDSCH is The index of the included slot 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 indication field.

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

DCI format 1_1 is configured to include at least some or all of 4A to 4J.
4A) Identifier for DCI formats field
4B) Frequency domain resource assignment field
4C) Time domain resource allocation field
assignment field)
4D) Frequency hopping flag field
4E) MCS field (MCS field: Modulation and Coding Scheme field)
4F) First CSI request field
ld)
4G) PDSCH-to-HARQ feedback timing indicator field
4H) PUCCH resource indicator field
4J) BWP field

The BWP field may be used to indicate the downlink BWP to which the PDSCH scheduled according to DCI format 1_1 is mapped.

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

The downlink control information may include unlicensed access common information. The unlicensed access common information is control information regarding access, transmission and reception, etc. in the unlicensed frequency band. The Unlicensed access common information may be information on a downlink subframe configuration for Unlicensed Access (Slot configuration). The downlink subframe configuration (slot configuration) is the position of the OFDM symbol occupied in the subframe (slot) in which the PDCCH is arranged, which includes information on the downlink subframe configuration (slot configuration), and/or the downlink The position of the OFDM symbol occupied in the subframe (slot) next to the subframe (slot) in which the PDCCH including information on the subframe configuration (slot configuration) is arranged is shown. Transmission and reception of downlink physical channels and downlink physical signals are performed in occupied OFDM symbols. The unlicensed access common information may be information on the uplink subframe configuration (UL duration and offset) (slot configuration). The uplink subframe configuration (slot configuration) is based on the subframe (slot) in which the PDCCH containing information on the uplink subframe configuration (slot configuration) is arranged, and the uplink subframe (uplink slot) starts. The number of subframes (slots) in the uplink subframe (uplink slot) is shown. The terminal device 1 is not required to receive a downlink physical channel or a downlink physical signal in the subframe (slot) indicated by the uplink subframe configuration (slot configuration) information.

For example, downlink control information including a downlink grant or an uplink grant, including a C-RNTI (Cell-Radio Network Temporary Identifier), is transmitted and received on the PDCCH. For example, the unlicensed access common information including CC-RNTI (Common Control-Radio Network Temporary Identifier) is transmitted and received on the PDCCH.

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

A downlink grant is used at least for scheduling one PDSCH within one serving cell. The uplink grant is used at least for scheduling one PUSCH within one serving cell.

Note that the various DCI formats may further include fields different from the above-mentioned fields. For example, a field (NFI: New Feedback Indicator field) indicating whether PDSCH HARQ-ACK information is correctly detected may be included. A field (NFI field) indicating whether to erase (flush) the HARQ-ACK bit stored in a recording medium such as a memory may be included. A field (NFI field) indicating whether to include retransmission of the transmitted HARQ-ACK codebook may be included. A field (PGI: PDSCH Group ID field) indicating a PDSCH group to which a PDSCH scheduled according to the DCI format belongs (is linked) may be included. A field (RPGI: Request PDSCH Group ID field) indicating a PDSCH group to which transmission of HARQ-ACK information is instructed may be included. A field (C-DAI: Counter Downlink Assignment Index field) indicating the cumulative number of transmitted PDCCHs may be included. A field (T-DAI: Total Downlink Assignment Index field) indicating the total number of PDCCHs to be transmitted may be included.

The terminal device 1 may be associated with a PDSCH group identifier (PGI: PDSCH Group ID) for each PDSCH. PGI of a certain PDSCH may be indicated based on at least the DCI format used for scheduling of the PDSCH. For example, a field indicating PGI (PGI field) may be included in the DCI format. For example, a PDSCH group may be a collection of PDSCHs having the same PGI (PDSCH group identifier). A PDSCH group may be one PDSCH or a set of one or more PDSCHs linked to the same PGI. The number of PDSCH groups configured for the terminal device 1 may be 1, 2, 3, 4, or any other number. It may be an integer greater than or equal to 0.

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

The value of K1 (information or parameter indicated by the timing instruction field from PDSCH to HARQ feedback) indicated by the DCI format included in PDCCH may be numerical or non-numerical. ) may be used. Here, the numerical value means a value expressed in numbers, for example, {0, 1, 2, . ．． ．． , 15}. A non-numeric value may mean a value other than a numeric value or may mean not indicating a numeric value. The operation of numerical K1 values and non-numeric K1 values will be explained below. For example, a PDSCH scheduled according to the DCI format is transmitted by the base station device 3 in slot n and received by the terminal device 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 a non-numeric value, the terminal device 1 may postpone reporting the HARQ-ACK information corresponding to the PDSCH. If a non-numeric K1 value is indicated by the DCI format that includes PDSCH scheduling information, 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 uses a format other than the above-mentioned DCI format. The transmission of the HARQ-ACK information may be triggered based at least on the DCI format to transmit (report) the HARQ-ACK information.

Non-numeric values of K1 may be included in the sequence of upper layer parameters. The upper layer parameter may be the upper layer parameter dl-DataToUL-ACK. The upper layer parameter may be a different upper layer parameter from the upper layer parameter dl-DataToUL-ACK. The value of K1 may be the value indicated by the PDSCH to HARQ feedback timing indication field included in the DCI format, among the series of upper layer parameters. For example, assuming that the sequence of upper layer parameters is set to {0, 1, 2, 3, 4, 5, 15, non-numeric value} and the number of bits in the timing indication field from PDSCH to HARQ feedback is 3. If Alternatively, the code point "111" may indicate that the value of K1 is a non-numeric value. For example, assuming that the sequence of upper layer parameters is set to {non-numeric values, 0, 1, 2, 3, 4, 5, 15} and the number of bits in the timing indication field from PDSCH to HARQ feedback is 3. If so, code point “000” in the PDSCH to HARQ feedback timing indication field may indicate that the value of K1 is a non-numeric value, and code point “001” may indicate that the value of K1 is 0. Alternatively, the code point "111" may indicate that the value of K1 is 15.

One physical channel may be mapped to one serving cell. One physical channel may be mapped to one BWP configured on one carrier included in one serving cell.

The terminal device 1 has one or more control resource sets (CORESET).
REsource SET) may be set. The terminal device 1 monitors PDCCH in one or more control resource sets. Here, monitoring the PDCCH in one or more control resource sets may include monitoring one or more PDCCHs corresponding to each of the one or more control resource sets. Note that the PDCCH may include one or more PDCCH candidates and/or a set of PDCCH candidates. Additionally, monitoring the PDCCH may include monitoring and detecting the PDCCH and/or the DCI format transmitted over the PDCCH.

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

In the frequency domain, 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 six resource blocks. In the time domain, the unit of mapping of the control resource set may be an OFDM symbol. For example, in the time domain, the unit of mapping of control resource sets may be one OFDM symbol.

The mapping of control resource sets to resource blocks may be provided based at least on upper layer parameters. The upper layer parameters may include a bitmap for a resource block group (RBG). The group of resource blocks may be provided by six consecutive resource blocks.

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

A certain control resource set may be a 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 provided based on at least some or all of the MIB, first system information, second system information, common RRC signaling, and cell ID. For example, the time resources and/or frequency resources of the control resource set configured to monitor the PDCCH used for scheduling the first system information may be provided based at least on the MIB.

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

A set of control resources is a set of dedicated control resources.
role resource set). The dedicated control resource set may be a control resource set configured to be used exclusively for the terminal device 1. The dedicated control resource set may be provided based on at least some or all of the dedicated RRC signaling and the value of the C-RNTI. 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 (CCEs) may be configured within the control resource set, and each CCE may be given an index (CCE index).

A set of PDCCH candidates monitored by the terminal device 1 is a search area (Search
space). That is, the set of PDCCH candidates monitored by the terminal device 1 may be given by the search area.

The search area consists of P at one or more aggregation levels.
It may be configured to include one or more DCCH candidates. The aggregation level of a PDCCH candidate may indicate the number of CCEs that constitute the PDCCH. A PDDCH candidate may be mapped to one or more CCEs.

The terminal device 1 may monitor at least one or more search areas in slots in which DRX (Discontinuous Reception) is not set. DRX may be provided based at least on upper layer parameters. The terminal device 1 may monitor at least one or more search space sets in slots in which DRX is not configured. 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 include at least one or more 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 search area set, an index of a control resource set associated with the search area set may be provided.

The search area may have two types: CSS (Common Search Space) and USS (UE-specific Search Space). The CSS may be a search area that is commonly set for multiple terminal devices 1. The USS may be a search area that includes settings used exclusively for individual terminal devices 1. The CSS may be provided based on at least a synchronization signal, an MIB, first system information, second system information, common RRC signaling, dedicated RRC signaling, cell ID, etc. The USS may be provided based at least on dedicated RRC signaling and/or the value of the C-RNTI. The CSS may be a search area set in a common resource (control resource element) for a plurality of terminal devices 1. The USS may be a search area set in a resource (control resource element) for each individual terminal device 1.

The CSS is a type 0 PDCCH CSS for the DCI format scrambled by SI-RNTI used for transmitting system information in the primary cell, and a type 0 PDCCH CSS for the DCI format scrambled by RA-RNTI and TC-RNTI used for initial access. Type 1 PDCCH CSS may be used. As the CSS, a type of PDCCH CSS for DCI format scrambled by CC-RNTI used for unlicensed access may be used. The terminal device 1 can monitor PDCCH candidates in those search areas. The DCI format scrambled by a predetermined RNTI may be a DCI format to which a CRC (Cyclic Redundancy Check) scrambled by a predetermined RNTI is added.

The information related to receiving the PDCCH may include information related to an ID indicating the destination of the PDCCH. The ID indicating the destination of the PDCCH may be an ID used for scrambling CRC bits added to the PDCCH. The ID that indicates the destination of the PDCCH is also called RNTI (Radio Network Temporary Identifier). The information related to receiving the PDCCH may include information related to an ID used for scrambling CRC bits added to the PDCCH. The terminal device 1 can attempt to receive the PDCCH based at least on the information related to the ID included in the PBCH.

RNTI is SI-RNTI (System Information - RNTI), P-RNTI (Paging - RNTI), C-RNTI (Common - RNTI), Temporary C-RNTI (TC-RNTI), RA-RNTI (Rand om Access - RNTI) , CC-RNTI (Common Control - RNTI), and INT-RNTI (Interruption - RNTI). The SI-RNTI is used at least for scheduling the PDSCH that is transmitted and includes system information. The P-RNTI is used at least for scheduling the PDSCH that is transmitted and includes information such as paging information and/or system information change notification. The C-RNTI is used at least to schedule user data for the RRC-connected terminal device 1. The Temporary C-RNTI is used at least for scheduling random access messages 4. The Temporary C-RNTI is used at least to schedule a PDSCH that includes data mapped to a CCCH in a logical channel. RA-RNTI is used at least for scheduling random access messages 2. CC-RNTI is used at least for transmitting and receiving control information for unlicensed access. INT-RNTI is used at least to indicate Pre-emption on the downlink.

Note that the PDCCH and/or DCI included in the CSS does not include a CIF (Carrier Indicator Field) that indicates which serving cell (or which component carrier) the PDSCH or PUSCH is scheduled for by the PDCCH/DCI. It's okay.

Note that when carrier aggregation (CA) is configured to perform communication (transmission and/or reception) by aggregating multiple serving cells and/or multiple component carriers for the terminal device 1, a predetermined The PDCCH and/or DCI included in the USS for the serving cell (predetermined component carrier) includes a CIF indicating which serving cell and/or which component carrier the PDSCH or PUSCH is scheduled for by the PDCCH/DCI. Good too.

Note that when communicating with the terminal device 1 using one serving cell and/or one component carrier, the PDCCH and/or DCI included in the USS has information on which serving cell and/or DCI the PDCCH/DCI is. Alternatively, the CIF indicating which component carrier the PDSCH or PUSCH is scheduled for may not be included.

The common control resource set may include a CSS. The common control resource set may include both CSS and USS. The dedicated control resource set may include a USS. The dedicated control resource set may include a CSS.

The physical resources of the search area are the constituent units of the control channel (CCE).
nnelElement). A CCE is composed of a predetermined number of resource element groups (REGs). For example, a CCE may be configured with six REGs. REG may be configured by one OFDM symbol of one PRB (Physical Resource Block). That is, the REG may be configured to include 12 resource elements (RE). PRB is also simply called RB (Resource Block).

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

In FIG. 1, the following downlink physical signals are used in downlink wireless communication. Downlink physical signals may not be used to transmit information output from higher layers, but are 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
eSignal)

The synchronization signal is used by the terminal device 1 to synchronize the downlink frequency domain and/or time domain. The synchronization signal is PSS (Primary Synchroniz
ation Signal) and SSS (Secondary Synchronization Signal).

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

DL DMRS is related to PBCH, PDCCH, and/or PDSCH transmission. DL DMRS is multiplexed onto PBCH, PDCCH, and/or PDSCH. The terminal device 1 may use DL DMRS corresponding to the PBCH, PDCCH, or PDSCH to perform channel correction of the PBCH, PDCCH, or PDSCH.

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

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

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

A downlink physical channel and a downlink physical signal are also called a downlink signal. The uplink physical channel and the uplink physical signal are also referred to as uplink signals. Downlink signals and uplink signals are also collectively referred to as physical signals. The downlink signal and the uplink signal are also collectively referred to as signals. 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-Sh
DL-SCH (Downlink-Shared CHannel) and DL-SCH (Downlink-Shared CHannel) are transport channels. A channel used in a medium access control (MAC) layer is called a transport channel. The unit of transport channel used in the MAC layer is also called a transport block (TB) or MAC PDU. In the MAC layer, HARQ (Hybrid Automatic Repeat reQue
st) control is performed. A transport block is a unit of data that the MAC layer delivers to the physical layer. At the physical layer, transport blocks are mapped to codewords, and modulation processing is performed for each codeword.

The base station device 3 and the terminal device 1 exchange (transmit and receive) upper layer signals in a higher layer. For example, the base station device 3 and the terminal device 1 use RRC signaling (RRC message: Radio Resource Control message; RRC information: Radio Reso) in a radio resource control (RRC) layer. control information) may be sent and received. . In addition, the base station device 3 and the terminal device 1
may transmit and receive a MAC CE (Control Element) in the MAC layer. Here, RRC signaling and/or MAC CE are also referred to as higher layer signaling.

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

BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated C
ontrol CHannel) is a logical channel. For example, BCCH is M
This is an upper layer channel used to transmit/receive IB. Further, CCCH (Common Control Channel) is an upper layer channel used for transmitting/receiving common information among a plurality of terminal devices 1. Here, the CCCH may be used, for example, for the terminal device 1 that is not connected to RRC. Further, DCCH (Dedicated Control Channel) is an upper layer channel used at least to transmit/receive dedicated control information to/from the terminal device 1 . Here, the DCCH may be used, for example, for the RRC-connected terminal device 1.

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

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

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

A certain component carrier may be set to a licensed band. A certain serving cell may be set to a licensed band. Here, setting a certain component carrier (or a certain serving cell) to a licensed band may include at least some or all of Settings 1 to 3 below.
Setting 1: A certain component carrier (or a certain serving cell) is given an upper layer parameter indicating that it operates in a licensed band, or a certain component carrier (or a certain serving cell) is given an unlicensed band. ) Configuration 2: A component carrier (or a serving cell) is configured to operate in a licensed band, or a component carrier (or a serving cell) is configured to operate in an unlicensed band. Configuration 3 where a certain component carrier (or a certain serving cell) is not configured: A certain component carrier (or a certain serving cell) is included in the licensed band, or a certain component carrier (or a certain serving cell) is not included in the unlicensed band

The licensed band may be a band in which a wireless station license is required for a terminal device that operates (is expected to operate) in the licensed band. The licensed band may be a band in which only terminal devices manufactured by operators (business entities, businesses, organizations, companies) that hold a radio station license are permitted to operate. An unlicensed band may be a band in which no channel access procedure is required prior to the transmission of physical signals.

The unlicensed band may be a band in which a wireless station license is not required for a terminal device that operates (is expected to operate) in the unlicensed band. An unlicensed band is a band in which terminal equipment manufactured by some or all of the operators who hold a radio station license and/or the operator who does not hold a radio station license is permitted to operate. good. An 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) depends on at least whether the certain component carrier (or the certain serving cell) is in a band that can operate in an unlicensed band (for example, an unlicensed band). The decision may be made based on whether or not the band is set to a band that can only be operated in For example, a list of bands designed for NR or NR carrier aggregation may be defined. For example, if a certain band is included in the list of one or more bands that can be operated in the unlicensed band (e.g., a band that can only be operated in the unlicensed band), then the certain band has an NR-U. may be applied. Additionally, if one or more bands in the list are not included in the bands that can be operated in unlicensed bands (for example, bands that can only be operated in unlicensed bands), may not be applied, and a normal NR (eg, NR of Release 15 or NR other than NR-U of Release 16) may be applied.

Whether NR-U is applied to a certain component carrier (or a certain serving cell) is determined at least if the component carrier (or its serving cell) is in a band in which NR-U can operate (for example, only in NR-U). The decision may be made based on whether or not the band is set in an operable band. For example, if one or more bands in the list are included in the bands that can be operated by NR-U (for example, bands that can only be operated by NR-U), then may be applied. Additionally, if one or more bands in the list are not included in the bands that can be operated by NR-U (for example, bands that can only be operated by NR-U), may not be applied, and a normal NR (eg, NR of Release 15 or NR other than NR-U of Release 16) may be applied.

Whether NR-U is applied to a certain component carrier (or a certain serving cell) may be determined based on information included in the MIB or system information. For example, if the MIB (or system information) includes information indicating whether or not to apply NR-U, and the information indicates that NR-U is applied, the MIB (or system information) NR-U may be applied to the serving cell to which the system information) corresponds. On the other hand, if the information does not indicate that NR-U is applied, NR-U is not applied to the serving cell to which the MIB (or the system information) corresponds, and normal NR is applied. Good too. Alternatively, the information may indicate whether operation is possible in an unlicensed band.

Certain component carriers may be configured as unlicensed bands. A certain serving cell may be set to an unlicensed band. Here, setting a certain component carrier (or a certain serving cell) to an unlicensed band may include at least some or all of Settings 4 to 6 below.
Setting 4: A certain component carrier (or a certain serving cell) is given an upper layer parameter indicating that it operates in an unlicensed band.Setting 5: A certain component carrier (or a certain serving cell) is given an upper layer parameter indicating that it operates in an unlicensed band. ) is set 6: A certain component carrier (or a certain serving cell) is included in the unlicensed band

The following description will be made assuming that the component carrier is set to a licensed band or an unlicensed band. Note that “the component carrier is set to the licensed band” may also mean “the serving cell is set to the licensed band”, and “the component carrier is set to the unlicensed band” may be “ The serving cell may be set to an unlicensed band.

Whether the terminal device 1 receives the first SS/PBCH block or the second SS/PBCH block in a certain component carrier depends on whether NR-U is applied in the certain component carrier or not. and whether or not the certain component carrier is set to an unlicensed band.

For example, when a certain component carrier is set to a licensed band, the terminal device 1 may receive the first SS/PBCH block. Further, when a certain component carrier is set to a licensed band, the terminal device 1 may receive the first PDCCH in the first type 0 PDCCH common search area set. Furthermore, when a certain component carrier is set to a licensed band, the base station device 3 may transmit the first SS/PBCH block. Furthermore, when a certain component carrier is set to a licensed band, the base station device 3 may receive the first PDCCH in the first type 0 PDCCH common search area set.

When a certain component carrier is set to an unlicensed band, the terminal device 1 may receive the second SS/PBCH block. Further, when a certain component carrier is set to an unlicensed band, the terminal device 1 may receive the second PDCCH in the second type 0 PDCCH common search area set. Further, when a certain component carrier is set to an unlicensed band, the base station device 3 may transmit the second SS/PBCH block. Further, when a certain component carrier is set to an unlicensed band, the base station device 3 may receive the second PDCCH in the second type 0 PDCCH common search area set.

For example, if NR-U is not applied to a certain component carrier and the component carrier is set to a licensed band, the terminal device 1 may receive the first SS/PBCH block. Further, if NR-U is not applied to a certain component carrier and the component carrier is set to the licensed band, the terminal device 1 receives the first PDCCH in the first type 0 PDCCH common search area set. It's okay. Further, when NR-U is not applied to a certain component carrier and the component carrier is set to a licensed band, the base station device 3 may transmit the first SS/PBCH block. Further, if NR-U is not applied to a certain component carrier and the component carrier is set to the licensed band, the base station device 3 receives the first PDCCH in the first type 0 PDCCH common search area set. You may.

For example, if NR-U is not applied to a certain component carrier and the component carrier is set to an unlicensed band, the terminal device 1 may receive the second SS/PBCH block. Further, if NR-U is not applied to a certain component carrier and the component carrier is set to an unlicensed band, the terminal device 1 receives the first PDCCH in the second type 0 PDCCH common search area set. You may. Further, when NR-U is not applied to a certain component carrier and the component carrier is set to an unlicensed band, the base station device 3 may transmit the second SS/PBCH block. Further, when NR-U is not applied to a certain component carrier and the component carrier is set to an unlicensed band, the base station device 3 selects the first PDCCH in the second type 0 PDCCH common search area set. You may receive it.

For example, when NR-U is applied to a certain component carrier and the component carrier is set to a licensed band, the terminal device 1 may receive the second SS/PBCH block. Further, when NR-U is applied to a certain component carrier and the component carrier is set to the licensed band, the terminal device 1 receives the first PDCCH in the second type 0 PDCCH common search area set. Good too. Furthermore, when NR-U is applied to a certain component carrier and the component carrier is set to a licensed band, the base station device 3 may transmit the second SS/PBCH block. Further, when NR-U is applied to a certain component carrier and the component carrier is set to the licensed band, the base station device 3 receives the first PDCCH in the second type 0 PDCCH common search area set. It's okay.

For example, when NR-U is applied to a certain component carrier and the component carrier is set to an unlicensed band, the terminal device 1 may receive the second SS/PBCH block. Further, when NR-U is applied to a certain component carrier and the component carrier is set to an unlicensed band, the terminal device 1 receives the first PDCCH in the second type 0 PDCCH common search area set. It's okay. Furthermore, when NR-U is applied to a certain component carrier and the component carrier is set to an unlicensed band, the base station device 3 may transmit the second SS/PBCH block. Further, when NR-U is applied to a certain component carrier and the component carrier is set to an unlicensed band, the base station device 3 receives the first PDCCH in the second type 0 PDCCH common search area set. You may.

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

FIG. 4 is a schematic block diagram showing the configuration of the terminal device 1 according to one aspect of the present embodiment. As illustrated, the terminal device 1 includes a wireless transmitter/receiver 10 and an upper layer processor 14. The radio transmitting/receiving section 10 is configured to include at least part or all of an antenna section 11, an RF (Radio Frequency) section 12, and a baseband section 13. The upper layer processing section 14 is configured to include at least part or all of the medium access control layer processing section 15 and the radio resource control layer processing section 16. The wireless transmitter/receiver 10 is also referred to as a transmitter, a receiver, or a physical layer processor. The transmitter may transmit a physical signal and/or a physical channel. The physical signal may include an uplink demodulation reference signal and/or a sounding reference signal. Physical channels may include PRACH, PUCCH, and/or PUSCH. The transmitter may transmit some or all of PRACH, PUCCH, and PUSCH. The receiving unit may receive a physical signal and/or a physical channel. The physical signal may include a downlink demodulation reference signal, a channel state information reference signal, and/or a synchronization signal. Physical channels may include PBCH, PDCCH, and/or PDSCH. The receiving unit may receive part or all of the PBCH, PDCCH, and/or PDSCH.

The upper layer processing unit 14 outputs uplink data (transport blocks) generated by user operations etc. to the wireless transmitting/receiving unit 10. The upper layer processing unit 14 processes a MAC layer, a packet data convergence protocol (PDCP) layer, and a radio link control (RLC) layer.
ol) layer and RRC layer.

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

The radio resource control layer processing section 16 included in the upper layer processing section 14 performs RRC layer processing. The radio 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 upper layer signal received from the base station device 3. That is, the radio resource control layer processing unit 16 sets various setting information/parameters based on information indicating the various setting information/parameters received from the base station device 3. Note that the configuration information may include information related to processing or configuration 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 transmitter/receiver 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. The wireless transmitting/receiving unit 10 separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. The wireless transmitter/receiver 10 modulates, encodes, and generates a baseband signal (converts to a time continuous signal) to generate a physical signal, and transmits the physical signal to the base station device 3 .

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

The baseband section 13 converts the analog signal input from the RF section 12 into a digital signal. The baseband section 13 converts the converted digital signal into CP (Cyclic Pr).
A fast Fourier transform (FFT) is performed on the signal from which the CP has been removed, and a signal in the frequency domain is extracted.

The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the data.
ast Fourier Transform) to generate an OFDM symbol, add a CP to the generated OFDM symbol, generate a baseband digital signal, and convert the baseband digital signal into an analog signal. The baseband section 13 outputs the converted analog signal to the RF section 12.

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

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

FIG. 5 is a schematic block diagram showing the configuration of the base station device 3 according to one aspect of the present embodiment. As illustrated, the base station device 3 includes a wireless transmitter/receiver 30 and an upper layer processor 34. The radio transmitting/receiving section 30 includes an antenna section 31, an RF section 32, and a baseband section 33. The upper layer processing section 34 includes a medium access control layer processing section 35 and a radio resource control layer processing section 36. The wireless transmitting/receiving unit 30 is also referred to as a transmitting unit, a receiving unit, or a physical layer processing unit. The receiving unit may receive a physical signal and/or a physical channel. The physical signal may include an uplink demodulation reference signal and/or a sounding reference signal. Physical channels may include PRACH, PUCCH, and/or PUSCH. The transmitter may receive some or all of PRACH, PUCCH, and PUSCH. The transmitter may transmit a physical signal and/or a physical channel. The physical signal may include a downlink demodulation reference signal, a channel state information reference signal, and/or a synchronization signal. Physical channels may include PBCH, PDCCH, and/or PDSCH. The transmitter may transmit part or all of the PBCH, PDCCH, and/or PDSCH.

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 performs MAC layer processing.

The radio resource control layer processing unit 36 included in the upper layer processing unit 34 performs RRC layer processing. The radio resource control layer processing unit 36 generates downlink data (transport blocks), system information, RRC messages, MAC CE, etc. arranged on the PDSCH, or acquires them from upper nodes, and outputs them to the radio transceiver unit 30. . Further, the radio resource control layer processing unit 36 manages various setting information/parameters of each terminal device 1. The radio resource control layer processing unit 36 may set various setting information/parameters for each terminal device 1 via upper layer signals. That is, the radio resource control layer processing unit 36 transmits/broadcasts information indicating various setting information/parameters. Note that the configuration information may include information related to processing or configuration 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 functions of the wireless transmitter/receiver 30 are the same as those of the wireless transmitter/receiver 10, so the description thereof will be omitted.

Each of the units labeled 10 to 16 included in the terminal device 1 may be configured as a circuit. Each of the units 30 to 36 included in the base station device 3 may be configured as a circuit.

Prior to transmitting the physical signal, the terminal device 1 performs carrier sense (Carrier sense).
) may be implemented. Furthermore, the base station device 3 may perform carrier sense prior to transmitting the physical signal. Carrier sensing may be performing energy detection on a radio channel. Whether or not the physical signal can be transmitted may be determined based on carrier sense that is performed prior to transmitting the physical signal. For example, if the amount of energy detected by carrier sensing performed prior to the transmission of a physical signal is greater than a predetermined threshold, the physical channel may not be transmitted or cannot be transmitted. It may be determined that Furthermore, if the amount of energy detected by carrier sensing performed prior to transmitting a physical signal is smaller than a predetermined threshold, transmission of the physical channel may be performed or transmission is possible. You may be judged. Furthermore, when the amount of energy detected by carrier sensing performed prior to transmission of a physical signal is equal to a predetermined threshold, transmission of the physical channel may or may not be performed. . In other words, if the amount of energy detected by carrier sensing performed prior to physical signal transmission is equal to a predetermined threshold, it may be determined that transmission is not possible, or it may be determined that transmission is possible. good.

The procedure for determining whether or not a physical channel can be transmitted based on carrier sense is also called LBT (Listen Before Talk). A situation in which it is determined that transmission of a physical signal is not possible as a result of LBT is also called a busy state or busy. For example, the busy state may be a state in which the amount of energy detected by carrier sensing is greater than a predetermined threshold. Further, a situation in which it is determined that transmission of a physical signal is possible as a result of LBT is also called an idle state or idle. For example, the idle state may be a state in which the amount of energy detected by carrier sensing is less than a predetermined threshold. A determination that transmission of a physical signal is not possible as a result of LBT is also referred to as LBT failure.

The period during which a channel is continuously occupied (Channel Occupancy Time: COT) may be predetermined in value depending on the country, or may be predetermined on a frequency band basis. The base station device 3 may notify the terminal device 1 of the channel occupied section. The terminal device 1 recognizes the length of the channel occupied period and can grasp the timing at which the channel occupied period ends. For example, the maximum value of COT may be 2ms, 3ms, 6ms, 8ms, or 10ms.

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

HARQ-ACK may also be referred to as ACK/NACK, HARQ feedback, HARQ-ACK feedback, HARQ response, HARQ-ACK response, HARQ information, HARQ-ACK information, HARQ control information, and HARQ-ACK control information. .

A semi-static scheduling (SPS) PDSCH may be configured by upper layer parameters for each BWP in a certain serving cell. Activation or deactivation of the SPS PDSCH may be performed for each serving cell. Activation or deactivation of the SPS PDSCH may be performed independently between serving cells. The SPS (Semi-Persistent Scheduling) PDSCH may be a PDSCH that is semi-statically scheduled to the terminal device 1.

In the downlink SPS PDSCH, a downlink assignment (DL assignment) is given by the PDCCH and may be saved based on L1 signaling instructing activation of the SPS. In the downlink SPS PDSCH, a downlink assignment (DL assignment) is given by the PDCCH and may be initialized (cleared) based on L1 signaling that instructs deactivation of SPS.

When the SPS PDSCH is configured, the upper layer (RRC) may configure some or all of the parameters: cs-RNTI, nrofHARQ-Processes, and periodicity. Here, the cs-RNTI may be an RNTI value for SPS PDSCH activation, SPS PDSCH deactivation, or SPS PDSCH retransmission. Also, nrofHARQ-Processes may be the number of HARQ processes configured for the SPS PDSCH. Furthermore, periodicity may be a period of DL assignment configured for SPS PDSCH.

When an SPS PDSCH is released or deactivated by an upper layer, some or all of the corresponding configuration may be released. When an SPS PDSCH is released or deactivated by an upper layer, some or all of the corresponding configurations may be initialized.

After the DL assignment for the SPS PDSCH is configured, the MAC entity may consider that the N _DA th DL assignment occurs sequentially in the slot n _DAslot as shown in Equation 1. Here, n _DAslot is (numberOfSlotsPerFrame * SFN _DA + n _DAslot ) = {(numberOfSlotsPerFrame * SFN _{start_time} + slot _{start_time} ) + N _{D A} * periodicity * numberOfSlotsPerFrame/10} mod (1024 * numberOfSlotsPerFrame). Here, numberOfSlotsPerFrame may be the number of consecutive slots included in one Radio frame. The numberOfSlotsPerFrame may be the number of slots that constitute one Radio frame. The numberOfSlotsPerFrame may be 10, 20, 40, 80, or 160. Further, SFN _DA may be a Radio frame number that includes slot nDAslot. The SFN _{start_time} may be a Radio frame number that includes a slot in which the SPS PDSCH is transmitted for the first time after the DL assignment is initialized (activated) or reinitialized (reactivated). The slot _{start_time} may be the slot number at which the SPS PDSCH is transmitted for the first time after the DL assignment is initialized (activated) or reinitialized (reactivated). Periodicity may be given by upper layer parameters. periodicity may be 10, 20, 32, 40, 64, 80, It may be 128, 160, 320, or 640.

One or more HARQ processes for the SPS PDSCH may be configured by the upper layer parameter nrofHARQ-Processes. The HARQ process ID included in the HARQ process for SPS PDSCH may be shared with the HARQ process ID included in the HARQ process for PDSCH scheduled with the DL grant included in the DCI format. The HARQ process ID included in the HARQ process for the SPS PDSCH may be different from the HARQ process ID included in the HARQ process for the PDSCH scheduled with the DL grant included in the DCI format.

The terminal device 1 may report (transmit) HARQ-ACK information corresponding to the SPS PDSCH to the base station device 3 using the PUCCH. The PUCCH is in PUCCH format.
It may be composed of 0. Further, the PUCCH may be configured in PUCCH format1. The PUCCH may be configured in PUCCH format 0 for NR-U. The PUCCH may be configured in PUCCH format 1 for NR-U.

PUCCH resources (PUCCH resources) for transmitting HARQ-ACK information corresponding to the SPS PDSCH may be configured based on the DCI format that activates the SPS PDSCH. The terminal device 1 may continue to use the PUCCH resource configured by the DCI format after the SPS PDSCH is activated and until the SPS PDSCH is deactivated. The terminal device 1 receives information (parameters) regarding DL assignment included in the DCI format used for activating the SPS PDSCH from when the SPS PDSCH is activated until when it is deactivated. You can continue to use it for

For SPS PDSCH scheduling, the terminal device 1 does not need to expect to receive PDCCHs other than PDCCHs including DCI formats that activate and deactivate the SPS PDSCH. The terminal device 1 does not need to expect to receive PDCCHs other than PDCCHs including DCI formats that activate and deactivate the SPS PDSCH for scheduling new transmission of the SPS PDSCH.

FIG. 6 is a diagram showing an example of reception of SPS PDSCH in this embodiment. In FIG. 6, the period of the SPS PDSCH is assumed to be _px . PDCCH 601 may be a PDCCH including DCI format that activates SPS PDSCH. The SPS PDSCH 602 is the first PDSCH activated by the DCI format included in the PDCCH 601. The terminal device 1 may determine the slot in which the PUCCH that transmits HARQ-ACK information corresponding to the SPS PDSCH 602 exists based on the value of K1 included in the DCI format that activated the SPS PDSCH included in the PDCCH 601. . For example, since K1 is 1 in FIG. 6, the terminal device 1 receives the HARQ-ACK corresponding to the SPS PDSCH 602 one slot after the slot in which the terminal device 1 received the SPS PDSCH 602, that is, in Slot #m+1. Information may be transmitted using PUCCH 603.

In FIG. 6, the SPS PDSCH 604 and the SPS PDSCH 606 may be PDSCHs without a PDCCH that instructs PDSCH scheduling. The terminal device 1 may determine the slot in which the PUCCH that transmits HARQ-ACK information corresponding to the SPS PDSCH 604 exists based on the value of K1 included in the DCI format that activated the SPS PDSCH included in the PDCCH 601. . For example, since K1 is 1 in FIG. 6, the terminal device 1 receives the HARQ signal corresponding to the SPS PDSCH 604 one slot after the slot in which the terminal device 1 received the SPS PDSCH 604, that is, at Slot #m+p _x +1. - ACK information may be transmitted using PUCCH605. Furthermore, the terminal device 1 determines the slot in which the PUCCH that transmits HARQ-ACK information corresponding to the SPS PDSCH 606 exists based on the value of K1 included in the DCI format that activated the SPS PDSCH included in the PDCCH 601. Good too. For example, in FIG. 6, since K1 is 1, the terminal device 1 receives the HARQ corresponding to the SPS PDSCH 606 one slot after the slot in which the terminal device 1 received the SPS PDSCH 606, that is, at Slot#m+jp _x +1. - ACK information may be transmitted using PUCCH607. Here, j may be an integer of 1 or more.

In FIG. 6, PDCCH 608 may be a PDCCH that includes a DCI format that deactivates SPS PDSCH. The terminal device 1 may generate HARQ-ACK information corresponding to whether the SPS PDSCH is successfully deactivated by the PDCCH 608. That is, the terminal device 1 may generate an ACK when the SPS PDSCH is successfully deactivated by the PDCCH 608. The terminal device 1 may generate a NACK when the SPS PDSCH fails to be deactivated by the PDCCH 608. The terminal device 1 may determine HARQ-ACK information corresponding to the deactivation of the SPS PDSCH based on the value of K1 included in the DCI format that activated the SPS PDSCH included in the PDCCH 601. For example, in FIG. 6, since K1 included in the DCI format included in the PDCCH 608 is 1, the terminal device 1 transmits the SPS PDSCH one slot after the slot in which the PDCCH 608 is received, that is, in Slot #m+jp _x +3. HARQ-ACK information corresponding to deactivation may be transmitted using PUCCH 609.

The terminal device 1 may report HARQ-ACK information corresponding to SPS PDSCH release to the base station device 3 using a HARQ-ACK codebook. The terminal device 1 is instructed by the value of the PDSCH-to-HARQ feedback timing indicator field (PDSCH-to-HARQ_feedback timing indicator field) included in the DCI format 1_0 or DCI format 1_1 that corresponds to SPS PDSCH release. The HARQ-ACK information corresponding to the slot may be reported to the base station device 3 using a HARQ-ACK codebook.

SPS PDSCH release may be performed by DCI format included in PDCCH.

Scheduling activation if the CRC in DCI format is scrambled with the CS-RNTI given by the upper layer parameter cs-RNTI, and the new data indicator field of the transport block is set to 0. ) or scheduling release, the terminal device 1 may validate downlink SPS assignment PDCCH (DL SPS assignment PDCCH) or uplink grant type 2 PDCCH (UL grant Type 2 PDCCH). . Scheduling activation may be performed based on at least the activation, a HARQ process number (HARQ process ID), and a redundancy version included in the DCI format. The scheduling release is based on the activation and the HARQ process number (HARQ process ID), redundancy version, modulation and coding scheme, and resource block assignment (HARQ process ID) included in the DCI format. source block assignment). {A mod B} is a modulo operation. A modulo operation is a function that outputs the remainder when A is divided by B, and is expressed as {A mod B}. For example, (5 mod 4)=1.

If the downlink data is successfully decoded, an ACK for the downlink data may be generated. If the downlink data is not successfully decoded, a NACK for the downlink data may be generated. The HARQ-ACK may include at least HARQ-ACK bits corresponding to at least one transport block. The HARQ-ACK bit may indicate ACK (ACKnowledgement) or NACK (Negative-ACKnowledgement) corresponding to one or more transport blocks. HARQ-ACK may include at least a HARQ-ACK codebook that includes 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 that includes the one or more transport blocks.

HARQ control corresponding to one transport block may be called a HARQ process. One HARQ process identifier may be provided for each HARQ process. The DCI format may include a field indicating a HARQ process identifier. The HARQ process identifier is also referred to as HARQ process ID.

NDI (New Data Indicator) may be indicated in DCI format for each HARQ process. For example, an NDI field may be included in a DCI format (DL assignment) that includes PDSCH scheduling information. The NDI field may be 1 bit. The terminal device 1 may store (memorize) the NDI value for each HARQ process. The base station device 3 may store (memorize) the NDI value for each HARQ process for each terminal device 1. The terminal device 1 may update the stored NDI value using the NDI field of the detected DCI format. The base station device 3 may set the updated NDI value or the non-updated NDI value in the NDI field of the DCI format and transmit it to the terminal device 1. The terminal device 1 may update the stored NDI value using the NDI field of the detected DCI format for the HARQ process that corresponds to the value of the HARQ process identifier field of the detected DCI format. .

The terminal device 1 may determine whether the received transport block is a new transmission or a retransmission based on the value of the NDI field of the DCI format (DL assignment). The terminal device 1 compares the previously received NDI value for a transport block of a certain HARQ process, and determines whether the received transport block is toggled if the value of the NDI field of the detected DCI format is toggled. It may be determined that this is a new transmission. When transmitting a newly transmitted transport block in a certain HARQ process, the base station device 3 toggles the NDI value stored for the HARQ process and transmits the toggled NDI to the terminal device 1. Good too. When transmitting a transport block for retransmission in a certain HARQ process, the base station device 3 does not toggle the NDI value stored for the HARQ process, and even if it transmits an NDI that is not toggled to the terminal device 1. good. The terminal device 1 compares the previously received NDI value for a transport block of a certain HARQ process, and if the value of the NDI field of the detected DCI format is not toggled (if the same), the received The transport block may be determined to be a retransmission. Note that toggling here means switching to a different value.

The terminal device 1 stores HARQ-ACK information in a HARQ-ACK codebook (HARQ-ACK codebook) in a slot designated by the value of the HARQ instruction field included in DCI format 1_0 or DCI format 1_1 that corresponds to PDSCH reception. ) may be used to report to the base station device 3.

For DCI format 1_0, the value of the HARQ indication field may be mapped to a set of slot numbers (1, 2, 3, 4, 5, 6, 7, 8). For DCI format 1_1, the value of the HARQ indication field may be mapped to the set of slot numbers given by the upper layer parameter dl-DataToUL-ACK. The number of slots indicated based on at least the value of the HARQ indication field may also be referred to as HARQ-ACK timing or K1. For example, HARQ-ACK indicating the decoding state of PDSCH (downlink data) transmitted in slot n may be reported (transmitted) in slot n+K1.

dl-DataToUL-ACK indicates a list of HARQ-ACK timings for PDSCH. Timing is the number of slots between the slot in which the PDSCH is received (or the slot containing the last OFDM symbol to which the PDSCH is mapped) and the slot in which the HARQ-ACK for the received PDSCH is transmitted. be. For example, dl-DataToUL-ACK may be a list of 1, or 2, or 3, or 4, or 5, or 6, or 7, or 8 timings. If dl-DataToUL-ACK is a list of one timing, the HARQ indication field is 0 bits. If dl-DataToUL-ACK is a list of two timings, the HARQ indication field is 1 bit. If dl-DataToUL-ACK is a list of 3 or 4 timings, the HARQ indication field is 2 bits. If dl-DataToUL-ACK is a list of 5, or 6, or 7, or 8 timings, the HARQ indication field is 3 bits. If dl-DataToUL-ACK is a list of n _K1 timings, the HARQ indication field may be ceil(log2(n _K1 )). Here, ceil(X _A ) is a function that outputs an integer obtained by rounding up the decimal point of the numerical value X _A. For example, ceil(2.3) may be 3. Further, dl-DataToUL-ACK is composed of a list of timings with any value in the range of 0 to 31. For example, dl-DataToUL-ACK consists of a list of timings with any value in the range 0 to 63.

The size of dl-DataToUL-ACK is defined as the number of elements that dl-DataToUL-ACK includes. The size of dl-DataToUL-ACK may be referred to as L _para . The index of dl-DataToUL-ACK may indicate the order (number) of the elements of dl-DataToUL-ACK. For example, if the size of dl-DataToUL-ACK is 8 (L _para = 8), the index of dl-DataToUL-ACK is 1, 2, 3, 4, 5, 6, 7, or 8. It may be a value. The index of dl-DataToUL-ACK may be given or indicated by the value indicated by the HARQ indication field.

The terminal device 1 may set the size of the HARQ-ACK codebook according to the size of dl-DataToUL-ACK. For example, if dl-DataToUL-ACK consists of 8 elements, the size of the HARQ-ACK codebook may be 8. For example, if dl-DataToUL-ACK consists of two elements, the size of the HARQ-ACK codebook may be two. Each piece of HARQ-ACK information constituting the HARQ-ACK codebook may be HARQ-ACK information for PDSCH reception at each slot timing of dl-DataToUL-ACK. This type of HARQ-ACK codebook is also referred to as a Semi-static HARQ-ACK codebook.

An example of setting the HARQ indication field will be explained. For example, dl-DataToUL-ACK consists of a list of eight timings: 0, 7, 15, 23, 31, 39, 47, 55, and the HARQ indication field consists of 3 bits. “000” in the HARQ instruction field may correspond to the first 0 in the dl-DataToUL-ACK list as the corresponding timing. That is, "000" in the HARQ instruction field may correspond to the value 0 indicated by index 1 of dl-DataToUL-ACK. The HARQ instruction field "001" may correspond to the second 7 in the list of dl-DataToUL-ACK as the corresponding timing. The HARQ instruction field "010" may correspond to the third 15 in the list of dl-DataToUL-ACK as the corresponding timing. The HARQ instruction field "011" may correspond to the fourth 23 in the list of dl-DataToUL-ACK as a corresponding timing. The HARQ instruction field "100" may correspond to the fifth 31 in the list of dl-DataToUL-ACK as a corresponding timing. The HARQ instruction field "101" may correspond to the sixth 39 in the list of dl-DataToUL-ACK as a corresponding timing. The HARQ instruction field "110" may correspond to the seventh 47 in the list of dl-DataToUL-ACK as a corresponding timing. The HARQ instruction field "111" may correspond to the eighth 55 in the list of dl-DataToUL-ACK as a corresponding timing. If the received HARQ instruction field indicates "000", the terminal device 1 may transmit the corresponding HARQ-ACK in the 0th slot from the received PDSCH slot. If the received HARQ instruction field indicates "001", the terminal device 1 may transmit the corresponding HARQ-ACK in the seventh slot from the received PDSCH slot. If the received HARQ instruction field indicates "010", the terminal device 1 may transmit the corresponding HARQ-ACK in the 15th slot from the received PDSCH slot. If the received HARQ instruction field indicates “011”, the terminal device 1 may transmit the corresponding HARQ-ACK in the 23rd slot from the received PDSCH slot. If the received HARQ instruction field indicates "100", the terminal device 1 may transmit the corresponding HARQ-ACK in the 31st slot from the received PDSCH slot. If the received HARQ instruction field indicates "101", the terminal device 1 may transmit the corresponding HARQ-ACK in the 39th slot from the received PDSCH slot. If the received HARQ instruction field indicates "110", the terminal device 1 may transmit the corresponding HARQ-ACK in the 47th slot from the received PDSCH slot. If the received HARQ instruction field indicates "111", the terminal device 1 may transmit the corresponding HARQ-ACK in the 55th slot from the received PDSCH slot.

When the upper layer parameter pdsch-AggregationFactor is given to the terminal device 1, N _PDSCH ^repeat may be the value of pdsch-AggregationFactor. If the upper layer parameter pdsch-AggregationFactor is not provided to the terminal device 1, N _PDSCH ^repeat may be 1. The terminal device 1 may report HARQ-ACK information for PDSCH reception from slot n−N _PDSCH ^repeat +1 to slot n using PUCCH transmission and/or PUSCH transmission in slot n+k. Here, k may be the number of slots indicated by the HARQ indication field included in the DCI format corresponding to the PDSCH reception. Additionally, if the HARQ indication field is not included in the DCI format, k may be given by the upper layer parameter dl-DataToUL-ACK.

When the terminal device 1 is configured to monitor a PDCCH including DCI format 1_0 and not to monitor a PDCCH including DCI format 1_1, the HARQ-ACK timing value K1 is (1, 2, 3, 4, 5, 6, 7, and 8). If the terminal device 1 is configured to monitor a PDCCH including DCI format 1_1, the HARQ-ACK timing value K1 may be given by the upper layer parameter dl-DataToUL-ACK.

The terminal device 1 may determine a set of multiple opportunities for reception of one or more candidate PDSCHs for transmission of corresponding HARQ-ACK information on the PUCCH of a certain slot. The terminal device 1 may determine that the plurality of slots at the slot timing K1 included in the dl-DataToUL-ACK are the plurality of opportunities for candidate PDSCH reception. K1 may be a set of k. For example, dl-DataToUL-ACK is (1, 2, 3, 4, 5, 6
, 7, 8), for PUCCH in slot n, PDSCH reception in slot n-1, PDSCH reception in slot n-2, PDSCH reception in slot n-3, PDSCH reception in slot n-4, HARQ-ACK information may be transmitted for PDSCH reception in slot n-5, PDSCH reception in slot n-6, PDSCH reception in slot n-7, and PDSCH reception in slot n-8. If the terminal device 1 actually receives a PDSCH in a slot that corresponds to candidate PDSCH reception, it sets ACK or NACK as HARQ-ACK information based on the transport block included in the PDSCH, and determines whether the terminal device 1 corresponds to candidate PDSCH reception. If a PDSCH is not received in a slot, NACK may be set as HARQ-ACK information.

The HARQ indication field included in the DCI format received on the PDCCH of slot n-1 may indicate 1. The HARQ indication field included in the DCI format received on the PDCCH of slot n-2 may indicate 2. The HARQ indication field included in the DCI format received on the PDCCH of slot n-3 may indicate 3. The HARQ indication field included in the DCI format received on the PDCCH of slot n-4 may indicate 4. The HARQ indication field included in the DCI format received on the PDCCH of slot n-5 may indicate 5. The HARQ indication field included in the DCI format received on the PDCCH of slot n-6 may indicate 6. The HARQ indication field included in the DCI format received on the PDCCH of slot n-7 may indicate 7. The HARQ indication field included in the DCI format received on the PDCCH of slot n-8 may indicate 8.

Based on the slot in which the PDCCH was received and the value of the HARQ instruction field included in the received DCI format, the terminal device 1 determines the slot in which to transmit HARQ-ACK information and the number of candidate PDSCH receptions corresponding to the HARQ-ACK information. A set of slots may also be determined. For example, when dl-DataToUL-ACK is (1, 2, 3, 4, 5, 6, 7, 8), the terminal device 1 receives the PDSCH in slot m, and the DCI included in the PDCCH for which the PDSCH was scheduled. Assume that the HARQ instruction field included in format indicates 4. The terminal device 1 may determine to transmit HARQ-ACK information in slot (m+4). The terminal device 1 determines that the other HARQ-ACK information transmitted in slot (m+4) is the HARQ-ACK information for PDSCH reception in slot (m+(1-4)) and the HARQ-ACK information in slot (m+(2-4)). HARQ-ACK information for PDSCH reception, HARQ-ACK information for PDSCH reception in slot (m+(3-4)), HARQ-ACK information for PDSCH reception in slot (m+(5-4)), and HARQ-ACK information for PDSCH reception in slot (m+(5-4)), (6-4)) HARQ-ACK information for PDSCH reception in slot (m+(7-4)), HARQ-ACK information for PDSCH reception in slot (m+(8-4)), and HARQ-ACK information for PDSCH reception in slot (m+(8-4)). It may be determined that the information is the ACK information.

dl-DataToUL-ACK may include not only a value indicating the number of slots as the timing of HARQ-ACK, but also a value (information) indicating that HARQ-ACK is held. When the terminal device 1 receives a HARQ instruction field indicating a value indicating that HARQ-ACK is to be held on the PDCCH, the terminal device 1 holds the HARQ-ACK (HARQ-ACK information) for the PDSCH scheduled on that PDCCH, and It is also possible to wait for transmission of ACK (HARQ-ACK information).

Although the Semi-static HARQ-ACK codebook has been described above as a type of HARQ-ACK codebook, different types of HARQ-ACK codebooks may be used. Dynamic HARQ-ACK
A type of HARQ-ACK codebook called "codebook" will be explained.

A HARQ-ACK codebook corresponding to a certain PDSCH group includes one or more HARQ-ACK codebooks corresponding to one or more transport blocks included in one or more PDSCHs included in the certain PDSCH group. may be given based on the HARQ-ACK bit. The HARQ-ACK codebook may be provided based on a set of Monitoring occasions for PDCCH, at least some or all of the values of the counter DAI field. The HARQ-ACK codebook may be provided further based on the value of the UL DAI field. The HARQ-ACK codebook may be provided further based on the value of the DAI field. The HARQ-ACK codebook may be provided further based on the value of the total DAI field.

The HARQ-ACK codebook size of the Dynamic HARQ-ACK codebook may be based on the fields of the DCI format. The size of the HARQ-ACK codebook may be set based on the value of the counter DAI field of the last received DCI format. The counter DAI field may indicate the cumulative number of PDSCHs or transport blocks scheduled until reception of the corresponding DCI format. The size of the Dynamic HARQ-ACK codebook may be set based on the value of the total DAI field of the DCI format. The total DAI field may indicate the total number of PDSCHs or transport blocks scheduled until transmission of the HARQ-ACK codebook.

The terminal device 1 sets a set of PDCCH monitoring opportunities for HARQ-ACK information transmitted on the PUCCH arranged in the slot with index n (slot#n), the value of timing K1, and the value of slot offset K0. The decision may be made based on at least some or all of the following. The set of PDCCH monitoring occasions for HARQ-ACK information transmitted on the PUCCH arranged in the slot with index n is also the set of monitoring occasions for PDCCH for slot#n. It is called. Here, the set of PDCCH monitoring opportunities may include M PDCCH monitoring opportunities. For example, the slot offset K0 may be indicated based at least on the value of a time domain resource allocation field included in the downlink DCI format. The slot offset K0 is from the slot containing the last OFDM symbol in which the PDCCH including the DCI format including the time domain resource allocation field indicating the slot offset K0 is arranged to the first OFDM symbol of the PDSCH scheduled according to the DCI format. may be a value indicating the number of slots (slot difference).

When the DCI format detected in the monitoring opportunity of any search area set corresponding to the monitoring opportunity of a certain PDCCH triggers the transmission of HARQ-ACK information in slot n, the terminal device 1 monitors the PDCCH. The opportunity may be determined to be a PDCCH monitoring opportunity for slot n. Further, if 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 detects the monitoring opportunity of the PDCCH. may not be determined as the PDCCH monitoring opportunity for slot n. Furthermore, if the DCI format is not detected in the monitoring opportunity of the search area set corresponding to a certain PDCCH monitoring opportunity, the terminal device 1 does not have to determine the PDCCH monitoring opportunity as the PDCCH monitoring opportunity for slot n. .

The PUCCH resource used for transmitting HARQ-ACK information in slot n is the PUCCH resource included in the last DCI format among one or more DCI formats detected in the set of PDCCH monitoring opportunities for slot n. The identification may be based at least on an instruction field. Here, each of the one or more DCI formats triggers the 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 index of the DCI format in the set of PDCCH monitoring opportunities for the slot n is given in ascending order with respect to the index of the serving cell where the DCI format is detected, and then the PDCCH monitoring opportunity set where the DCI format is detected. given in ascending order of index. PDCCH monitoring opportunity indices are given in ascending order on the time axis.

Counter DAI is the cumulative number of PDCCHs (or cumulative (may be at least a value related to the number). Counter DAI may also be referred to as C-DAI. The C-DAI corresponding to a PDSCH may be indicated by a field included in the DCI format used for scheduling the PDSCH. The total DAI may indicate the cumulative number of PDCCHs (or may be at least a value related to the cumulative number) detected up to PDCCH monitoring opportunity m in M PDCCH monitoring opportunities. The total DAI may indicate the cumulative number of PDSCHs (or may be at least a value related to the cumulative number) detected up to PDCCH monitoring opportunity m in M PDCCH monitoring opportunities. The total DAI may be called T-DAI (Total Downlink Assignment Index).

Semi-static HARQ-ACK codebook (Type 1 HARQ-ACK codebook) or Dynamic HARQ-ACK codebook (Type 2 HARQ-ACK codebook) is instructed to transmit (triggered) based on DL assignment. , requested) HARQ- It may be an ACK codebook. The DCI format including the HARQ indication field may be DL assignment (Downlink assignment). The DL assignment may be a DCI format used for PDSCH scheduling. DL assignment may be a DCI format used for PDSCH assignment. A Semi-static HARQ-ACK codebook may be configured based on dl-DataToUL-ACK and HARQ indication field. The size of the Semi-static HARQ-ACK codebook may be given based on the size included in dl-DataToUL-ACK. The timing of the slots included in the Semi-static HARQ-ACK codebook or the Dynamic HARQ-ACK codebook may be given based on the value of the HARQ indication field and the slot in which the DCI including the HARQ indication field was received.

The type 3 HARQ-ACK codebook can be said to be a HARQ-ACK codebook whose transmission is triggered by the DCI format (DL assignment) with PDSCH scheduling information. Type 3HARQ -ACK CODEBOOK is a type of DCI Format (DCI Format (HARQ -ACK CODEBOOK), which is different from DCI Format with PDSCH scheduling information, accompanies the screwing information of DCI FORMAT, PUSCH. Send by DCI FORMAT) It can be said to be a triggered HARQ-ACK codebook.

Transmission of the type 3 HARQ-ACK codebook may be instructed (triggered, requested) by a DCI format that is not a DL assignment. For example, DL
DCI format that is not an assignment is type 3 HARQ-ACK
The DCI format may be used only to trigger the transmission of a codebook. For example, the DCI format that is not a DL assignment may be a DCI format (UL grant) that performs PUSCH scheduling.

Transmission of the type 3 HARQ-ACK codebook may be instructed (triggered, requested) by DCI format, which is a DL assignment. The DCI format may include a dedicated field for instructing (triggering, requesting) transmission of the HARQ-ACK codebook.

Transmission of the type 3 HARQ-ACK codebook may be instructed (triggered, requested) by the DCI format that performs PUSCH scheduling. The DCI format may include a dedicated field for instructing (triggering, requesting) transmission of the HARQ-ACK codebook.

In the Type 3 HARQ-ACK codebook, a bit included in the DCI format that triggers the transmission of HARQ-ACK information included in some or all HARQ processes is referred to as a HARQ trigger bit.

The type 4 HARQ-ACK codebook can be said to be a HARQ-ACK codebook whose transmission is triggered by the DCI format without PDSCH scheduling information and without PUSCH scheduling. The DCI format that triggers the type 4 HARQ-ACK codebook may include one or more HARQ process IDs to be reported and an NDI. This DCI format is referred to as a trigger-only DCI format.

Base station device 3 sends type 3 HARQ-ACK to terminal device 1 using the HARQ trigger bit.
When instructing (requesting) the transmission (report) of a codebook, the terminal device 1 transmits HARQ-ACK information included in some or all HARQ processes configured in the terminal device 1 and one configured in the terminal device 1. The NDI value included in some or all of the HARQ processes may be transmitted (reported) to the base station device 3 using a type 3 HARQ-ACK codebook. When the base station device 3 instructs (requests) the terminal device 1 to transmit (report) a type 3 HARQ-ACK codebook using the HARQ trigger bit, the terminal device 1 uses the HARQ trigger bit to instruct (request) the terminal device 1 to transmit (report) a type 3 HARQ-ACK codebook. One HARQ-ACK information included in the HARQ process and one NDI value included in the HARQ process may be transmitted (reported) to the base station device 3.

When the base station device 3 instructs (requests) the terminal device 1 to transmit (report) a type 4 HARQ-ACK codebook using the trigger-only DCI format, the terminal device 1 uses the HARQ process ID and the HARQ process ID included in the trigger-only DCI format. , NDI exists in the HARQ process ID and NDI stored in the terminal device 1, the terminal device 1 transmits the HARQ-ACK information stored in the HARQ process ID included in the trigger-only DCI format. If the process ID and NDI do not exist in the HARQ process ID and NDI stored in the terminal device 1, a NACK may be transmitted.

A type 3 HARQ-ACK codebook and/or a type 4 HARQ-ACK codebook is an HARQ-ACK codebook for multiple or all HARQ processes.
It may also include ARQ-ACK information. For example, HARQ process may mean HARQ process used for PDSCH. For example, all HARQ processes may mean all HARQ processes that can be used in at least one serving cell. For example, the number of HARQ processes that can be used in one serving cell may be 16. For example, the number of HARQ processes that can be used in five serving cells may be 80. For example, a plurality of HARQ processes may mean a plurality of HARQ processes configured by RRC signaling. For example, a plurality of HARQ processes may mean a plurality of HARQ processes instructed by Downlink control information. For example, multiple HARQ processes may mean multiple explicitly or implicitly indicated HARQ processes. For example, the number of multiple HARQ processes may be eight. For example, the number of multiple HARQ processes may be ten.

The type 3 HARQ-ACK codebook can be said to be a HARQ-ACK codebook in which the HARQ process of the PDSCH to which the HARQ-ACK included in the HARQ-ACK codebook corresponds is defined. The slot in which the PDSCH corresponding to the HARQ-ACK included in the type 3 HARQ-ACK codebook is received is not limited in advance, and may be set by scheduling of the base station device 3.

The type 3 HARQ-ACK codebook may include the value of NDI associated with the HARQ process corresponding to the HARQ-ACK reported in the type 3 HARQ-ACK codebook. The type 3 HARQ-ACK codebook may include an NDI value for each HARQ process that includes HARQ-ACK information reported in the type 3 HARQ-ACK codebook. The terminal device 1 may determine (set) HARQ-ACK information to be included in the type 3 HARQ-ACK codebook based on at least some or all of the stored HARQ processes and NDI values. The HARQ-ACK may be HARQ-ACK information corresponding to a transport block for a certain HARQ process. The NDI value may indicate the NDI for the certain HARQ process. Further, the value of the NDI may indicate the NDI corresponding to the HARQ-ACK information.

If the terminal device 1 receives a PDCCH that includes a DCI format that includes a HARQ trigger bit, and the SPS PDSCH is not configured in the terminal device 1, the terminal device 1 is included in the HARQ process configured in the terminal device 1. The HARQ-ACK information included in the HARQ process and the NDI value included in the HARQ process may be transmitted using a PUCCH that transmits HARQ-ACK information corresponding to the PDSCH scheduled by the PDCCH.

Configuring the SPS PDSCH in the terminal device 1 may mean that the SPS PDSCH is activated in the terminal device 1. Further, the fact that the terminal device 1 is configured with the SPS PDSCH may also mean that the terminal device 1 is provided with the configuration of the SPS PDSCH.

The fact that the SPS PDSCH is not configured in the terminal device 1 may also mean that the SPS PDSCH is deactivated in the terminal device 1. Further, the fact that the terminal device 1 is not configured with an SPS PDSCH may also mean that the terminal device 1 is not provided with an SPS PDSCH configuration.

The fact that the terminal device 1 receives the SPS PDSCH means that the terminal device 1 receives the SPS PD
It may also mean that the SCH is configured.

FIG. 7 is a diagram showing an example of a type 3 HARQ-ACK codebook when no SPS PDSCH is configured in this embodiment. dl-DataToUL-ACK indicated by 700 is 1, 2, 3. Assume that PDCCH 701 schedules PDSCH 704, PDCCH 702 schedules PDSCH 705, and PDCCH 703 schedules PDSCH 706. The DCI format included in the PDCCH 701 has K1 as 2, HARQ process ID as 1, NDI as 1, and HARQ trigger bit as 0. Here, the HARQ trigger bit is the HARQ-ACK information included in some or all HARQ processes configured in the terminal device 1 by the base station device 3, and the NDI value included in the some or all HARQ processes configured in the terminal device 1. It may also be a parameter that instructs (requests) the terminal device 1 to report (send) the information. In the DCI format included in the PDCCH 702, K1 is 1, HARQ process ID is 2, NDI is 1, and HARQ trigger bit is 0. The DCI format included in the PDCCH 703 has K1 as 1, HARQ process ID as 3, NDI as 0, and HARQ trigger bit as 1.

HARQ-ACK information corresponding to PDSCH 704 is NACK, and HARQ-ACK information corresponding to PDSCH 705 is ACK. The terminal device 1 receives HARQ-ACK information corresponding to PDSCH 704 and HARQ-ACK information corresponding to PDSCH 705 based on the K1 value of the DCI format included in PDCCH 701 and the K1 value of DCI format included in PDCCH 702. is transmitted on PUCCH707.

HARQ-ACK information corresponding to PDSCH 706 is NACK. The terminal device 1 transmits HARQ-ACK information corresponding to PDSCH 706 on PUCCH 708 based on the value of K1 of DCI format included in PDCCH 703. Here, since the HARQ trigger bit of the DCI format included in the PDCCH 703 is 1, the terminal device 1 receives the HARQ-ACK information included in some or all of the HARQ processes configured in the terminal device 1, and Alternatively, the NDI value included in all HARQ processes is transmitted on PUCCH 708. That is, since the HARQ trigger bit of the DCI format included in the PDCCH 703 is 1, the terminal device 1 uses the HARQ-ACK included in the HARQ process ID1, HARQ process ID2, and HARQ process ID3 configured in the terminal device 1. The information and the NDI values included in the HARQ process ID1, HARQ process ID2, and HARQ process ID3 configured in the terminal device 1 are transmitted on the PUCCH 708.

Even if the HARQ-ACK information and NDI value transmitted on PUCCH 708 are placed at the beginning of the bit string (MSB: Most Significant Bit) from the HARQ-ACK information and NDI value included in the HARQ process with a small HARQ process ID, good. Even if the HARQ-ACK information and NDI value transmitted on PUCCH 708 are placed at the beginning of the bit string (MSB: Most Significant Bit) from the HARQ-ACK information and NDI value included in the HARQ process with a large HARQ process ID, good. Even if the HARQ-ACK information and NDI value transmitted on PUCCH 708 are placed at the beginning of the bit string (MSB: Most Significant Bit) from the HARQ-ACK information and NDI value included in the previously allocated HARQ process, good.

SPS PDSCH is configured in the terminal device 1, the terminal device 1 receives the SPS PDSCH, and the HARQ trigger bit included in the DCI format is included in some or all of the HARQ processes configured in the terminal device 1. When the terminal device 1 is requested (instructed) to transmit HARQ-ACK information, there is a problem that the terminal device 1 cannot report the NDI corresponding to the SPS PDSCH when transmitting the HARQ-ACK information because there is no NDI value for the SPS PDSCH. Occur.

SPS PDSCH is configured in the terminal device 1, the terminal device 1 receives the SPS PDSCH, and the HARQ trigger bit included in the DCI format is included in some or all HARQ processes configured in the terminal device 1. When requested (instructed) to transmit HARQ-ACK information, the terminal device 1 may map a predetermined value to the HARQ-ACK information included in the HARQ process corresponding to the SPS PDSCH. Here, the predetermined value may be 0 or 1.

SPS PDSCH is configured in the terminal device 1, the terminal device 1 receives the PDSCH scheduled by the SPS PDSCH and the DL grant, and the HARQ trigger bit included in the DCI format is a part configured in the terminal device 1. Or, when requested (instructed) to transmit HARQ-ACK information included in all HARQ processes, the terminal device 1 sends HARQ-ACK information included in the HARQ process corresponding to one or more PDSCHs scheduled by the DL grant. Even if the information and the NDI value included in the HARQ process are first mapped to the bit string that becomes the input of the PUCCH resource, the HARQ-ACK information included in the HARQ process corresponding to the SPS PDSCH and a predetermined value are mapped. good.

FIG. 8 is a diagram showing an example of a report of HARQ-ACK information corresponding to the PDSCH scheduled by the DL grant and the SPS PDSCH when the SPS PDSCH is configured in the terminal device 1 in this embodiment. PDCCH 801 schedules PDSCH 804, PDCCH 802 schedules PDSCH 805, and PDCCH 803 schedules PDSCH 806. The terminal device 1 may transmit HARQ-ACK information corresponding to PDSCH 804 and HARQ-ACK information corresponding to PDSCH 805 to PUCCH 807 based at least on the value of K1. Since the HARQ trigger bit included in the DCI format included in PDCCH 801 and PDCCH 802 is 0, the terminal device 1 does not need to transmit (report) the value of NDI.

Since K1 of SPS PDSCH 809 is 2, terminal device 1 may transmit HARQ-ACK information corresponding to SPS PDSCH 809 using PUCCH 808. Since the value of K1 included in the DCI format included in the PDCCH 803 is 1, the terminal device 1 transmits the HARQ-ACK information corresponding to the PDSCH 806 scheduled by the PDCCH 803 using the PUCCH 808 located one slot later. It's okay.

The HARQ trigger bit included in the DCI format included in PDCCH 803 is used to transmit HARQ-ACK information included in some or all HARQ processes configured in the terminal device 1 and the NDI value for the HARQ-ACK information. In order to instruct the terminal device 1, the terminal device 1 uses the PUCCH 808 to transmit the HARQ-ACK information included in some or all of the HARQ processes configured in the terminal device 1 and the NDI value for the HARQ-ACK information. You can also send it. Here, since the NDI value corresponding to SPS PDSCH 809 is not set, the terminal device 1 may set a predetermined value in the NDI value field corresponding to SPS PDSCH 809 in PUCCH 808, and transmit PUCCH 808. . The predetermined value may be 0 or 1. In the PUCCH 808 of FIG. 8, the field 811 may be a field for HARQ-ACK information corresponding to one or more PDSCHs scheduled by the DL grant and NDI for the HARQ-ACK information. Field 812 may be a field for HARQ-ACK information corresponding to the SPS PDSCH and NDI for the HARQ-ACK information.

SPS PDSCH is configured in the terminal device 1, the terminal device 1 receives the PDSCH scheduled by the SPS PDSCH and the DL grant, and the HARQ trigger bit included in the DCI format is a part configured in the terminal device 1. Or, when the transmission of HARQ-ACK information included in all HARQ processes is requested (instructed), the bit string mapped to the PUCCH for transmitting the triggered HARQ-ACK information and the NDI for the HARQ-ACK information is { HARQ-ACK information, NDI} may be arranged in this order.

SPS PDSCH is configured in the terminal device 1, the terminal device 1 receives the SPS PDSCH, and the HARQ trigger bit included in the DCI format is included in some or all of the HARQ processes configured in the terminal device 1. When requested (instructed) to transmit HARQ-ACK information, the terminal device 1 may map only the HARQ-ACK information included in the HARQ process corresponding to the SPS PDSCH.

SPS PDSCH is configured in the terminal device 1, the terminal device 1 receives the PDSCH scheduled by the SPS PDSCH and the DL grant, and the HARQ trigger bit included in the DCI format is a part configured in the terminal device 1. Alternatively, if the transmission of HARQ-ACK information included in all HARQ processes is requested (instructed) and there are multiple HARQ processes with the same HARQ process ID, the terminal device 1 HARQ-ACK information included in the last (newest) HARQ process configured among the processes and NDI for the HARQ-ACK information may be reported to the base station device 3.

SPS PDSCH is configured in the terminal device 1, the terminal device 1 receives the SPS PDSCH, and the HARQ trigger bit included in the DCI format is included in some or all HARQ processes configured in the terminal device 1. When requested (instructed) to transmit HARQ-ACK information, the terminal device 1 does not need to transmit (report) the HARQ-ACK information included in the HARQ process corresponding to the SPS PDSCH.

If the terminal device 1 receives a PDCCH that includes a DCI format that instructs deactivation of the SPS PDSCH, and the HARQ trigger bit included in the DCI format is included in some or all of the HARQ processes configured in the terminal device 1. When the terminal device 1 is requested (instructed) to transmit HARQ-ACK information to be transmitted, the terminal device 1 may map a predetermined value to the HARQ-ACK information corresponding to deactivation of the SPS PDSCH. Here, the predetermined value may be 0 or 1.

If the terminal device 1 receives a PDCCH that includes a DCI format that instructs deactivation of the SPS PDSCH, and the HARQ trigger bit included in the DCI format is included in some or all of the HARQ processes configured in the terminal device 1. When the terminal device 1 is requested (instructed) to transmit HARQ-ACK information corresponding to deactivation of the SPS PDSCH, the terminal device 1 may transmit only the HARQ-ACK information corresponding to deactivation of the SPS PDSCH.

If the terminal device 1 receives a PDCCH that includes a DCI format that instructs deactivation of the SPS PDSCH, and the HARQ trigger bit included in the DCI format is included in some or all of the HARQ processes configured in the terminal device 1. When the terminal device 1 is requested (instructed) to transmit HARQ-ACK information corresponding to deactivation of the SPS PDSCH, the terminal device 1 does not have to transmit the HARQ-ACK information corresponding to deactivation of the SPS PDSCH.

FIG. 9 is a diagram showing an example of reporting HARQ-ACK information for SPS PDSCH deactivation and HARQ trigger bit in this embodiment. PDCCH901 schedules PDSCH902. PDCCH906 schedules PDSCH907. PDCCH 908 may be a PDCCH that deactivates (releases) SPS PDSCH. The HARQ-ACK information corresponding to PDSCH 902 is ACK, and the terminal device 1 transmits the HARQ-ACK information using PUCCH 903. The HARQ-ACK information corresponding to PDSCH907 is ACK, and the terminal device 1 transmits the HARQ-ACK information using PUCCH909. The HARQ-ACK information corresponding to the SPS PDSCH 904 is NACK, and the terminal device 1 transmits the HARQ-ACK information using the PUCCH 905. The HARQ-ACK information corresponding to the PDCCH that deactivates the SPS PDSCH is ACK, and the terminal device 1 transmits the HARQ-ACK information using the PUCCH 909.

The base station device 3 uses the HARQ trigger bit field of the DCI format included in the PDCCH 906 to determine the HARQ-ACK information included in some or all of the HARQ processes configured in the terminal device 1 and the NDI for the HARQ-ACK information. When the terminal device 1 instructs (requests) to transmit using the PUCCH 909, the terminal device 1 transmits the HARQ-ACK information corresponding to the PDSCH 902, the NDI for the HARQ-ACK information, and the HARQ-ACK corresponding to the PDSCH 907. ACK information and an NDI for the HARQ-ACK information are mapped to a field 910 included in the PUCCH 909; HARQ-ACK information corresponding to the SPS PDSCH 904 and a first predetermined value are mapped to a field 911 included in the PUCCH 909; The HARQ-ACK information corresponding to the PDCCH 908 that deactivates the SPS PDSCH and a second predetermined value may be mapped to a field 912 included in the PUCCH 909, and the PUCCH 909 may be transmitted. Here, the first predetermined value may be 0 or 1. Further, the second predetermined value may be 0, 1, or a value different from the first predetermined value. For example, if the first predetermined value is zero, the second predetermined value may be one. For example, if the first predetermined value is one, the second predetermined value may be zero. The first predetermined value is referred to as the NDI value for the SPS PDSCH. The second predetermined value is referred to as the NDI value for SPS PDSCH deactivation.

The value of NDI for SPS PDSCH may be a predetermined value. The NDI value for deactivation of an SPS PDSCH may be different from the NDI value for the SPS PDSCH. For example, if the value of NDI for SPS PDSCH is 0, the value of NDI for deactivation of SPS PDSCH may be 1. For example, if the value of NDI for SPS PDSCH is 1, the value of NDI for deactivation of SPS PDSCH may be 0.

The terminal device 1 does not have to transmit the NDI value for the SPS PDSCH to the base station device 3. For example, in FIG. 9, the terminal device 1 may not transmit 0 included in the field 911, but may transmit only HARQ-ACK information (NACK). The terminal device 1 does not have to transmit the NDI value for deactivation of the SPS PDSCH to the base station device 3. For example, in FIG. 9, the terminal device 1 may not transmit the 1 included in the field 912, but may transmit only HARQ-ACK information (ACK).

The DCI format that triggers the transmission of a type 4 HARQ-ACK codebook may include an NDI field. The DCI format that triggers the transmission of the type 4 HARQ-ACK codebook includes an NDI field for each HARQ process in which the HARQ-ACK is included in the type 4 HARQ-ACK codebook. The base station device 3 sets the latest NDI value stored for each HARQ process in the NDI field of the DCI format. The terminal device 1 determines (sets) the HARQ-ACK to be included in the type 4 HARQ-ACK codebook based on the NDI field included in the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. The HARQ-ACK may be a HARQ-ACK corresponding to a transport block for a certain HARQ process. The NDI field may indicate the NDI for the certain HARQ process. Specifically, if the NDI value stored for each HARQ process is the same as the NDI value indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook, the terminal device 1 selects the corresponding HARQ process. Includes HARQ-ACK information memorized (stored) in a type 4 HARQ-ACK codebook, and triggers the transmission of the stored NDI value and type 4 HARQ-ACK codebook for each HARQ process. If the NDI value indicated by the DCI format is different, a NACK is included in the type 4 HARQ-ACK codebook for the corresponding HARQ process.

An example will be explained. For example, the terminal device 1 stores '1' as the NDI value for HARQ process #1, and 'ACK' as HARQ-ACK for HARQ process #1. The terminal device 1 receives a DCI format that includes '1' as the NDI value for HARQ process #1 and triggers the transmission of a type 4 HARQ-ACK codebook. Terminal device 1 determines that the NDI value stored for HARQ process #1 is the same as the NDI value for HARQ process #1 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. The 'ACK' determined and stored as the HARQ-ACK for HARQ process #1 is included in the type 4 HARQ-ACK codebook.

An example will be explained. For example, the terminal device 1 stores '1' as the NDI value for HARQ process #1, and 'ACK' as HARQ-ACK for HARQ process #1. The terminal device 1 receives a DCI format that includes '0' as the NDI value for HARQ process #1 and triggers the transmission of a type 4 HARQ-ACK codebook. Terminal device 1 determines that the NDI value stored for HARQ process #1 is different from the NDI value for HARQ process #1 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. , 'NACK' is included in the type 4 HARQ-ACK codebook as the HARQ-ACK for HARQ process #1. Since the terminal device 1 has a different NDI value stored for HARQ process #1 and an NDI value for HARQ process #1 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook, It is recognized that the detection of the DCI format containing the scheduling information for HARQ process #1 has been missed.

When the terminal device 1 receives a DCI format including PDSCH scheduling information, it updates the NDI value stored for the HARQ process based on the NDI field included in the DCI format including PDSCH scheduling information, If a DCI format that does not include PDSCH scheduling information and triggers the reporting of a HARQ-ACK codebook (e.g., type 4 HARQ-ACK codebook) is received, the HARQ-ACK
Determine a HARQ-ACK to be reported for a HARQ process based on an NDI field included in the DCI format that triggers a codebook report, and maintain the NDI value stored for the HARQ process. When the terminal device 1 receives a DCI format that includes an NDI field for each HARQ process and instructs to transmit a type 4 HARQ-ACK codebook, the terminal device 1 determines the HARQ-ACK to be reported for the HARQ process based on the NDI field, It is not used as the NDI value of the previous transmission regarding the HARQ process (does not memorize or store it).

An example will be explained. For example, the terminal device 1 stores '1' as the NDI value for HARQ process #1, and 'ACK' as HARQ-ACK for HARQ process #1. The terminal device 1 receives a DCI format that includes '0' as the NDI value for HARQ process #1 and triggers the transmission of a type 4 HARQ-ACK codebook. Terminal device 1 determines that the NDI value stored for HARQ process #1 is different from the NDI value for HARQ process #1 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. , the HARQ-ACK for HARQ process #1 is determined to be 'NACK', and the value of NDI for HARQ process #1 is not '0' (not memorized or stored), but is '1' which is already stored. ' Continue to use (keep remembering, keep storing).

An example will be explained. For example, the terminal device 1 stores '1' as the NDI value for HARQ process #1, and 'ACK' as HARQ-ACK for HARQ process #1. For example, the terminal device 1 stores '0' as the NDI value for HARQ process #2, and 'ACK' as HARQ-ACK for HARQ process #2. Terminal device 1 receives a DCI format that triggers transmission of a type 4 HARQ-ACK codebook that includes '0' as the NDI value for HARQ process #1 and '0' as the NDI value for HARQ process #2. . Terminal device 1 determines that the NDI value stored for HARQ process #1 is different from the NDI value for HARQ process #1 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. , it is determined that the HARQ-ACK for HARQ process #1 is 'NACK'. Terminal device 1 determines that the NDI value stored for HARQ process #2 is the same as the NDI value for HARQ process #2 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. The 'ACK' determined and stored as the HARQ-ACK for HARQ process #2 is included in the type 4 HARQ-ACK codebook. Terminal device 1 does not use (does not memorize or store) the NDI field value '0' notified in the DCI format as the NDI value for HARQ process #1, but uses the already stored '1'. Continue to use (continue to remember, continue to store). The terminal device 1 continues to use the already stored '0', which is the same as the value of the NDI field notified in the DCI format, as the NDI value for HARQ process #2 (continues to store, continues to store).

HARQ processes are associated with transport blocks. Terminal device 1 does not apply (do not use) the NDI field for a certain HARQ process included in the DCI format that instructs the transmission of a type 4 HARQ-ACK codebook to the NDI value of the previous transmission of the transport block of that HARQ process. ).

When the terminal device 1 receives the SPS PDSCH and receives the DCI format that triggers the transmission of a type 4 HARQ-ACK codebook containing HARQ-ACK information corresponding to the SPS PDSCH (HARQ process of SPS PDSCH), the terminal device 1 , it may be expected that the value of the NDI field corresponding to the SPS PDSCH included in the DCI format is a predetermined value. Here, the predetermined value may be 0 or 1.

The terminal device 1 receives a PDCCH instructing the deactivation (release) of the SPS PDSCH, and selects a DCI format that triggers the transmission of a type 4 HARQ-ACK codebook containing HARQ-ACK information corresponding to the deactivation of the SPS PDSCH. If received, the terminal device 1 may expect that the value of the NDI field corresponding to deactivation of the SPS PDSCH included in the DCI format is a predetermined value. Here, the predetermined value may be 0 or 1. Further, the predetermined value may be a different value from the NDI field value for HARQ-ACK information corresponding to the SPS PDSCH. For example, if the value of the NDI field for HARQ-ACK information corresponding to the SPS PDSCH is 0, the predetermined value may be 1. For example, if the value of the NDI field for HARQ-ACK information corresponding to the SPS PDSCH is 1, the predetermined value may be 0.

If the HARQ process ID included in the DCI format that triggers the reporting of type 4 HARQ-ACK codebook is the HARQ process ID configured for SPS PDSCH, the terminal device 1 uses the value of the NDI field included in the DCI format. When is X _NDI , HARQ-ACK information corresponding to the HARQ process ID for SPS PDSCH is included in the PUCCH, and when the value of the NDI field included in the DCI format is Y _NDI , the HARQ-ACK information corresponding to deactivation may be included in the PUCCH. Here, X _NDI may be 0 or 1. Further, Y _NDI may be 0, 1, or a different value from X _NDI . For example, if X _NDI is 0, Y _NDI may be 1. For example, if X _NDI is 1, Y _NDI may be 0.

When the terminal device 1 receives a DCI format that triggers a report of a type 4 HARQ-ACK codebook that includes HARQ-ACK information corresponding to deactivation of the SPS PDSCH, the terminal device 1 receives the information of the SPS PDSCH included in the DCI format. It may be expected that the HARQ process ID corresponding to deactivation is the same as the HARQ process ID of the last received SPS PDSCH.

When the terminal device 1 receives a DCI format that triggers a report of a type 4 HARQ-ACK codebook that includes HARQ-ACK information corresponding to deactivation of the SPS PDSCH, the terminal device 1 receives the information of the SPS PDSCH included in the DCI format. It may be expected that the HARQ process ID corresponding to deactivation is one HARQ process ID among one or more HARQ process IDs configured for the SPS PDSCH.

When the base station device 3 transmits a DCI format that triggers a report of a type 4 HARQ-ACK codebook that includes HARQ-ACK information corresponding to deactivation of the SPS PDSCH, the base station device 3 transmits the SPS included in the DCI format. The HARQ process ID corresponding to PDSCH deactivation may be set to the HARQ process ID of the last transmitted SPS PDSCH.

When the base station device 3 transmits the DCI format that triggers the report of a type 4 HARQ-ACK codebook that includes HARQ-ACK information corresponding to deactivation of the SPS PDSCH, the base station device 3 transmits the SPS PDSCH included in the DCI format. The HARQ process ID corresponding to the deactivation of the SPS PDSCH may be selected and set from one or more HARQ process IDs configured for the SPS PDSCH.

An example will be explained. For example, the terminal device 1 stores '1' as the NDI value for the HARQ process #1 corresponding to the PDSCH scheduled by the DL grant, stores 'ACK' as the HARQ-ACK for the HARQ process #1, and stores 'ACK' as the HARQ-ACK for the HARQ process #1. 'ACK' is stored as HARQ-ACK for HARQ process #2 corresponding to PDSCH. The terminal device 1 uses a DCI format that triggers the transmission of a type 4 HARQ-ACK codebook, which includes '1' as the value of the NDI field for HARQ process #1 and '0' as the value of the NDI field for HARQ process #2. Receive. In terminal device 1, the value of the NDI stored for HARQ process #1 is the same as the value of the NDI field for HARQ process #1 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. Based on the DCI format, it is determined that 'ACK' stored as HARQ-ACK information for HARQ process #1 is included in the type 4 HARQ-ACK codebook, and triggers the transmission of the type 4 HARQ-ACK codebook for HARQ process #2. Since the value of the indicated NDI field is '0', it is determined that it is a report of HARQ-ACK information corresponding to SPS PDSCH, and 'ACK' stored as HARQ-ACK for HARQ process #2 corresponding to SPS PDSCH is Include in the Type 4 HARQ-ACK codebook.

An example will be explained. For example, the terminal device 1 is configured with HARQ process #2 and HARQ process #3 for SPS PDSCH. The terminal device 1 stores '1' as the NDI value for the HARQ process #1 corresponding to the PDSCH scheduled by the DL grant, stores 'ACK' as the HARQ-ACK for the HARQ process #1, and transmits the HARQ-ACK to the SPS PDSCH. 'NACK' is stored as the HARQ-ACK for the corresponding HARQ process #2, and 'ACK' is stored as the HARQ-ACK for the HARQ process #3 corresponding to the SPS PDSCH. Furthermore, the terminal device 1 receives the PDCCH for deactivating the SPS PDSCH, and stores 'ACK' because the terminal device 1 successfully deactivates the SPS PDSCH. The terminal device 1 includes '1' as the value of the NDI field for HARQ process #1, '1' as the value of the NDI field for HARQ process #2, and '0' as the value of the NDI field for HARQ process #3. receiving a DCI format that triggers the transmission of a type 4 HARQ-ACK codebook, including: In terminal device 1, the value of the NDI stored for HARQ process #1 is the same as the value of the NDI field for HARQ process #1 indicated by the DCI format that triggers the transmission of the type 4 HARQ-ACK codebook. Based on the DCI format, it is determined that 'ACK' stored as HARQ-ACK information for HARQ process #1 is included in the type 4 HARQ-ACK codebook, and triggers the transmission of the type 4 HARQ-ACK codebook for HARQ process #2. Since the value of the indicated NDI field is '1', it is determined to be a report of HARQ-ACK information corresponding to deactivation of SPS PDSCH, and is stored as HARQ-ACK information corresponding to deactivation of SPS PDSCH. 'ACK' is included in the type 4 HARQ-ACK codebook and triggers the transmission of the type 4 HARQ-ACK codebook to HARQ process #3.Since the value of the NDI field indicated by the DCI format is '0', the SPS PDSCH HARQ process It is determined that this is a report of HARQ-ACK information corresponding to #3, and 'ACK' stored as HARQ-ACK corresponding to HARQ process #3 corresponding to SPS PDSCH is included in the type 4 HARQ-ACK codebook.

The size of the type 3 HARQ-ACK codebook may be given based on at least the number of HARQ processes configured in the terminal device 1 and the PDCCH that performs deactivation of the SPS PDSCH. For example, if the number of HARQ processes configured in the terminal device 1 is 16 and the terminal device 1 does not receive a PDCCH that deactivates the SPS PDSCH, the size of the type 3 HARQ-ACK codebook is It may be the sum (32 bits) of the number of included HARQ-ACK information (16 bits) and the number of NDIs (16 bits) for the HARQ process. For example, if the number of HARQ processes configured in the terminal device 1 is 16 and the terminal device 1 receives a PDCCH that deactivates the SPS PDSCH, the size of the type 3 HARQ-ACK codebook is the size of the type 3 HARQ-ACK codebook included in the HARQ process. The sum (33 bits) of the number of HARQ-ACK information (16 bits), the number of NDIs for the HARQ process (16 bits), and the HARQ-ACK information (1 bit) corresponding to SPS PDSCH deactivation. There may be. For example, if the number of HARQ processes configured in the terminal device 1 is 16 and the terminal device 1 receives a PDCCH that deactivates the SPS PDSCH, the size of the type 3 HARQ-ACK codebook is the size of the type 3 HARQ-ACK codebook included in the HARQ process. The number of HARQ-ACK information (16 bits), the number of NDIs for the HARQ process (16 bits), the HARQ-ACK information (1 bit) corresponding to deactivation of SPS PDSCH, and the predetermined number corresponding to the NDI. It may be a sum (34 bits) with a value (1 bit). Here, the 'predetermined value corresponding to NDI' is a value that does not function as NDI because there is no NDI value for SPS PDSCH, but is a value to be set in the NDI field included in the type 4 HARQ-ACK codebook. placeholder value).

The size of the type 4 HARQ-ACK codebook may be given based on at least the number of HARQ processes configured in the terminal device 1 and the PDCCH that performs deactivation of the SPS PDSCH. For example, if the number of HARQ processes configured in terminal device 1 is 16 and terminal device 1 does not receive a PDCCH that deactivates SPS PDSCH, the size of the type 4 HARQ-ACK codebook is It may also be the number of included HARQ-ACK information (16 bits). For example, if the number of HARQ processes configured in the terminal device 1 is 16 and the terminal device 1 receives a PDCCH that deactivates the SPS PDSCH, the size of the type 4 HARQ-ACK codebook is the size of the type 4 HARQ-ACK codebook included in the HARQ process. It may be the sum (17 bits) of the number of HARQ-ACK information (16 bits) and HARQ-ACK information (1 bit) corresponding to deactivation of SPS PDSCH.

The DCI format that triggers the reporting (transmission) of type 3 HARQ-ACK codebook may include a HARQ trigger field. The DCI format that triggers the reporting (transmission) of a type 4 HARQ-ACK codebook may include one or more HARQ process IDs to be reported and an NDI for the HARQ process IDs.

Triggering a report (transmission) of HARQ-ACK information included in one or more HARQ processes configured in the terminal device 1 means triggering a report (transmission) of a type 3 HARQ-ACK codebook. Good too. Triggering a report (transmission) of HARQ-ACK information included in one or more HARQ processes configured in the terminal device 1 means triggering a report (transmission) of a type 4 HARQ-ACK codebook. Good too.

Including the HARQ-ACK information in the PUCCH may mean including the HARQ-ACK information in the codebook.

The present invention can realize efficient communication. The present invention can realize efficient transmission and reception of HARQ-ACK information. The present invention can realize efficient transmission and reception of a HARQ-ACK codebook. The present invention can eliminate the recognition mismatch between the terminal device 1 and the base station device 3 in the HARQ process, and can appropriately operate the HARQ process.

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

(1) In order to achieve the above object, aspects of the present invention take the following measures. That is, a first aspect of the present invention is a terminal device including a processor and a memory that stores a computer program code, which receives a PDSCH scheduled by a DL grant and an SPS PDSCH, and receives a PDSCH scheduled by a DL grant. first HARQ-ACK information corresponding to the PDSCH scheduled by the SPS;
a receiving unit that receives a PDCCH that includes a DCI format that triggers transmission of second HARQ-ACK information corresponding to the PDSCH; and the first HARQ-ACK information and the second HARQ-ACK information. a transmitting unit that transmits PUCCH, and a first HARQ process ID included in the DCI format and a value of a first NDI field are stored for the first HARQ-ACK information. If the process ID and the value of the stored NDI are equal, the first HARQ-ACK information is included in the PUCCH, and the HARQ process ID and the value of the first NDI field are equal to the stored value. If the HARQ process ID contained in the DCI format is different from the stored NDI value, the first HARQ-ACK information is not included in the PUCCH, and the second HARQ process ID included in the DCI format is different from the stored NDI value. If the value of the second HARQ-ACK information is equal to the HARQ process ID stored for the second HARQ-ACK information and the value of the second NDI field is set to 0, the second HARQ-ACK information is transmitted to the PUCCH. Include in

(2) A second aspect of the present invention is a base station device that transmits a PDSCH scheduled by a DL grant and an SPS PDSCH, and transmits a first HARQ corresponding to the PDSCH scheduled by the DL grant. - a transmitter for transmitting a PDCCH including a DCI format that triggers transmission of ACK information and second HARQ-ACK information corresponding to the SPS PDSCH, the first HARQ-ACK information and the second HARQ-ACK information; a receiving unit that receives a PUCCH including HARQ-ACK information, and a first HARQ process ID included in the DCI format and a value of a first NDI field are included in the first HARQ-ACK information. If the stored HARQ process ID and the stored NDI value are equal to each other, the first HARQ-ACK information is included in the PUCCH, and the HARQ process ID and the first NDI field are equal. If the stored HARQ process ID and the stored NDI value are different, the first HARQ-ACK information is not included in the PUCCH, and the second HARQ-ACK information included in the DCI format is is equal to the HARQ process ID stored for the second HARQ-ACK information, and the value of the second NDI field is set to 0. HARQ-ACK information is included in the PUCCH.

A program that operates on the base station device 3 and the terminal device 1 related to the present invention is a program that controls a CPU (Central Processing Unit) etc. program). The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD.
The data is stored in a hard disk drive (D), and read, modified, and written by the CPU as necessary.

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

Note that the "computer system" herein refers to a computer system built into the terminal device 1 or the base station device 3, and includes hardware such as an OS and peripheral devices. Furthermore, the term "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into computer systems.

Furthermore, a "computer-readable recording medium" refers to a medium that dynamically stores a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, it may also include a device that retains a program for a certain period of time, such as a volatile memory inside a computer system that is a server or a client. Further, the program may be one for realizing a part of the above-mentioned functions, or may be one that can realize 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 containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to use a processor to cause the terminal device 1 to perform the operations and processes described in the above embodiments. The base station device 3 may consist of at least one processor and at least one memory containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to use a processor to cause the base station device 3 to perform the operations and processes described in the above embodiments.

Furthermore, the base station device 3 in the embodiment described above 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 functional block of the base station device 3 related to the embodiment described above. As a device group, it is sufficient to have each function or each functional block of the base station device 3. Further, the terminal device 1 according to the embodiment described above can also communicate with a base station device as an aggregate.

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

Moreover, a part or all of the terminal device 1 and the base station device 3 in the embodiments described above 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. Moreover, the method of circuit integration is not limited to LSI, but may be implemented using a dedicated circuit or a general-purpose processor. Further, if an integrated circuit technology that replaces LSI emerges due to advances in semiconductor technology, it is also possible to use an integrated circuit based on this technology.

Furthermore, in the embodiments described above, a terminal device was described as an example of a communication device, but the present invention is not limited to this, and the present invention is applicable to stationary or non-movable electronic devices 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 household appliances.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and may include design changes within the scope of the gist of the present invention. Further, the present invention can be modified in various ways within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included within the technical scope of the present invention. It will be done. Also included are configurations in which the elements described in each of the above embodiments are replaced with each other and have similar effects.

1 (1A, 1B, 1C) Terminal device 3 Base station device 10, 30 Radio transceiver section 11, 31 Antenna section 12, 32 RF section 13, 33 Baseband section 14, 34 Upper layer processing section 15, 35 Medium access control layer Processing units 16, 36 Radio resource control layer processing unit

Claims (4)

receiving a PDSCH scheduled by a DL grant and an SPS PDSCH; first HARQ-ACK information corresponding to the PDSCH scheduled by the DL grant; and second HARQ-ACK information corresponding to the SPS PDSCH; a receiving unit that receives a PDCCH including a DCI format that triggers transmission of the PDCCH;
a transmitter that transmits a PUCCH including the first HARQ-ACK information and the second HARQ-ACK information,
The first HARQ process ID included in the DCI format and the value of the first NDI field are the HARQ process ID stored for the first HARQ-ACK information and the stored NDI value. including the first HARQ-ACK information in the PUCCH if equal to
If the HARQ process ID and the value of the first NDI field are different from the stored HARQ process ID and the stored NDI value, the first HARQ-ACK information is Not included in PUCCH,
the second HARQ process ID included in the DCI format is equal to the HARQ process ID stored for the second HARQ-ACK information, and the value of the second NDI field is set to 0; If the terminal device includes the second HARQ-ACK information in the PUCCH. transmitting a PDSCH scheduled by a DL grant and an SPS PDSCH, first HARQ-ACK information corresponding to the PDSCH scheduled by the DL grant, and second HARQ-ACK information corresponding to the SPS PDSCH; a transmitting unit that transmits a PDCCH including a DCI format that triggers transmission of the PDCCH;
a receiving unit that receives PUCCH including the first HARQ-ACK information and the second HARQ-ACK information,
The first HARQ process ID included in the DCI format and the value of the first NDI field are the HARQ process ID stored for the first HARQ-ACK information and the stored NDI value. including the first HARQ-ACK information in the PUCCH if equal to
If the HARQ process ID and the value of the first NDI field are different from the stored HARQ process ID and the stored NDI value, the first HARQ-ACK information is Not included in PUCCH,
the second HARQ process ID included in the DCI format is equal to the HARQ process ID stored for the second HARQ-ACK information, and the value of the second NDI field is set to 0; A base station device that includes the second HARQ-ACK information in the PUCCH when the PUCCH is present. A communication method used in a terminal device,
receiving a PDSCH scheduled by a DL grant and an SPS PDSCH; first HARQ-ACK information corresponding to the PDSCH scheduled by the DL grant; and second HARQ-ACK information corresponding to the SPS PDSCH; receiving a PDCCH including a DCI format that triggers the transmission of a PDCCH;
transmitting a PUCCH including the first HARQ-ACK information and the second HARQ-ACK information,
The first HARQ process ID included in the DCI format and the value of the first NDI field are the HARQ process ID stored for the first HARQ-ACK information and the stored NDI value. including the first HARQ-ACK information in the PUCCH if equal to
If the HARQ process ID and the value of the first NDI field are different from the stored HARQ process ID and the stored NDI value, the first HARQ-ACK information is Not included in PUCCH,
the second HARQ process ID included in the DCI format is equal to the HARQ process ID stored for the second HARQ-ACK information, and the value of the second NDI field is set to 0; If the second HARQ-ACK information is present in the PUCCH, the second HARQ-ACK information is included in the PUCCH. A communication method used in a base station device, comprising:
transmitting a PDSCH scheduled by the DL grant and an SPS PDSCH, first HARQ-ACK information corresponding to the PDSCH scheduled by the DL grant, and second HARQ-ACK information corresponding to the SPS PDSCH; transmitting a PDCCH including a DCI format that triggers the transmission of a PDCCH;
receiving a PUCCH including the first HARQ-ACK information and the second HARQ-ACK information,
The first HARQ process ID included in the DCI format and the value of the first NDI field are the HARQ process ID stored for the first HARQ-ACK information and the stored NDI value. including the first HARQ-ACK information in the PUCCH if equal to
If the HARQ process ID and the value of the first NDI field are different from the stored HARQ process ID and the stored NDI value, the first HARQ-ACK information is Not included in PUCCH,
the second HARQ process ID included in the DCI format is equal to the HARQ process ID stored for the second HARQ-ACK information, and the value of the second NDI field is set to 0; If the second HARQ-ACK information is present in the PUCCH, the second HARQ-ACK information is included in the PUCCH.

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