Terminal device, base station device, and communication method

Abstract

The terminal device receives a DCI format for scheduling PDSCH, sends HARQ‑ACK information in time slot n, and when upper-layer parameters are given, for PDSCH group g, includes the monitoring opportunity of the PDCCH corresponding to the DCI format that meets the conditions in the set of monitoring opportunities of the PDCCH for time slot n, and generates the HARQ‑ACK information based on at least the set of monitoring opportunities of the PDCCH for time slot n, and the conditions are as follows: Condition 1 is that the HARQ‑ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is sent in batch n; Condition 2 is that the PDSCH group g is represented by the PGI field included in the DCI format.

Description

Technical Field

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

[0002] This application claims priority from Japanese Patent Application No. 2019-140476 filed in Japan on July 31, 2019, the contents of which are incorporated herein by reference. Background Art

[0003] In the Third Generation Partnership Project (3GPP: rd The LTE Generation Partnership Project (LTE) is a cellular communication system that studies wireless access methods and wireless networks for cellular mobile communications (hereinafter referred to as "Long Term Evolution (LTE)" or "Evolved Universal Terrestrial Radio Access (EUTRA)"). In LTE, base stations are also called eNodeBs (evolved NodeBs), and terminal devices are also called UEs (User Equipment). LTE is a cellular communication system that covers an area with multiple base stations arranged in a cell-like configuration. A single base station can manage multiple serving cells.

[0004] 3GPP is reviewing the next-generation standard (NR: New Radio) to be proposed to the International Telecommunication Union (ITU) for IMT (International Mobile Telecommunication)-2020, the next-generation mobile communications system standard (Non-Patent Document 1). NR is required to meet the requirements of the following three scenarios within a single technical framework: eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication).

[0005] Prior art literature

[0006] Non-patent literature

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

[0008] Problems to be solved by the invention

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

[0010] Technical Solution

[0011] (1) The first scheme of the present invention is a terminal device, which comprises: a receiving unit, which receives a DCI format for scheduling PDSCH; and a sending unit, which sends HARQ-ACK information in time slot n, and the terminal device includes: when upper layer parameters are given, for PDSCH group g, including the monitoring opportunity of the PDCCH corresponding to the DCI format that meets the conditions in the set of monitoring opportunities of the PDCCH for time slot n, and generating the HARQ-ACK information based on at least the set of monitoring opportunities of the PDCCH for time slot n, and the conditions are as follows: Condition 1 is that the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is sent in batch n; Condition 2 is that the PDSCH group g is represented by the PGI field included in the DCI format.

[0012] (2) A second solution of the present invention is a terminal device comprising: a receiving unit for receiving a DCI format for scheduling a PDSCH; and a transmitting unit for transmitting HARQ-ACK information in a time slot n, wherein the terminal device includes: when an upper layer parameter is given, for a PDSCH group g, when it is detected that an NFI bit is flipped compared to a previously received NFI bit, deleting a set of monitoring opportunities for a stored PDCCH, wherein the set of monitoring opportunities for the stored PDCCH is set to a set of monitoring opportunities for a first PDCCH, and the set of monitoring opportunities for a second PDCCH includes K representing a non-numeric value. 1, the set of monitoring opportunities for the third PDCCH includes the monitoring opportunities for the PDCCH corresponding to the DCI format with the value of K1 representing the numerical value, the set of monitoring opportunities for the PDCCH for time slot n includes the set of monitoring opportunities for the first PDCCH, the set of monitoring opportunities for the second PDCCH and the set of monitoring opportunities for the third PDCCH, the determined set of monitoring opportunities for the PDCCH for time slot n is saved, and the HARQ-ACK information is generated at least based on the set of monitoring opportunities for the PDCCH for time slot n.

[0013] (3) The third scheme of the present invention is a terminal device, which comprises: a receiving unit that receives a DCI format for scheduling PDSCH; and a sending unit that sends HARQ-ACK information in time slot n, the terminal device including: when upper layer parameters are given, for PDSCH group g, when it is detected that the NFI bit is flipped compared with the NFI bit received previously, deleting the set of saved PDCCH monitoring opportunities, adding the PDCCH monitoring opportunity corresponding to the DCI format of the value of K1 representing a non-numeric value to the set of saved PDCCH monitoring opportunities for saving, the third set of PDCCH monitoring opportunities includes the PDCCH monitoring opportunity corresponding to the DCI format of the value of K1 representing a numeric value, the set of PDCCH monitoring opportunities for time slot n includes the set of saved PDCCH monitoring opportunities and the third set of PDCCH monitoring opportunities, saving the determined set of PDCCH monitoring opportunities for time slot n, and generating the HARQ-ACK information at least based on the set of PDCCH monitoring opportunities for time slot n.

[0014] (4) The fourth scheme of the present invention is a base station device, which comprises: a sending unit, which sends a DCI format for scheduling PDSCH; and a receiving unit, which receives HARQ-ACK information in time slot n, and the base station device includes: when upper layer parameters are given, for PDSCH group g, the monitoring opportunity of the PDCCH corresponding to the DCI format that meets the conditions is included in the set of monitoring opportunities of the PDCCH for time slot n, and receives the HARQ-ACK information generated at least based on the set of monitoring opportunities of the PDCCH for time slot n, and the conditions are as follows: Condition 1 is that the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is sent in batch n; Condition 2 is that the PDSCH group g is represented by the PGI field included in the DCI format.

[0015] (5) A fifth scheme of the present invention is a base station device comprising: a transmitting unit for transmitting a DCI format for scheduling a PDSCH; and a receiving unit for receiving HARQ-ACK information in a time slot n, wherein the base station device includes: when an upper layer parameter is given, for a PDSCH group g, when it is detected that an NFI bit is flipped compared to a previously received NFI bit, a set of saved PDCCH monitoring opportunities is deleted, the set of first PDCCH monitoring opportunities is the set of saved PDCCH monitoring opportunities, and the set of second PDCCH monitoring opportunities includes K1 representing a non-numeric value. The set of monitoring opportunities for the PDCCH corresponding to the DCI format of the value K1, the set of monitoring opportunities for the third PDCCH includes the monitoring opportunities for the PDCCH corresponding to the DCI format of the value representing the numerical value K1, the set of monitoring opportunities for the PDCCH for time slot n includes the set of monitoring opportunities for the first PDCCH, the set of monitoring opportunities for the second PDCCH and the set of monitoring opportunities for the third PDCCH, the determined set of monitoring opportunities for the PDCCH for the time slot n is saved, and the HARQ-ACK information generated at least based on the set of monitoring opportunities for the PDCCH for the time slot n is received.

[0016] (6) A sixth scheme of the present invention is a base station device comprising: a transmitting unit that transmits a DCI format for scheduling a PDSCH; and a receiving unit that receives HARQ-ACK information in time slot n, wherein the base station device includes: when upper layer parameters are given, for PDSCH group g, when it is detected that the NFI bit is flipped compared to the NFI bit received previously, the set of stored PDCCH monitoring opportunities is deleted, the monitoring opportunity of the PDCCH corresponding to the DCI format representing the value of K1 which is a non-numeric value is added to the set of stored PDCCH monitoring opportunities for storage, the set of third PDCCH monitoring opportunities includes the monitoring opportunity of the PDCCH corresponding to the DCI format representing the value of K1 which is a numeric value, the set of PDCCH monitoring opportunities for time slot n includes the set of stored PDCCH monitoring opportunities and the set of third PDCCH monitoring opportunities, the determined set of PDCCH monitoring opportunities for time slot n is stored, and the HARQ-ACK information generated based on at least the set of PDCCH monitoring opportunities for time slot n is received.

[0017] (7) The seventh scheme of the present invention is a communication method for a terminal device, which includes: receiving a DCI format for scheduling PDSCH, sending HARQ-ACK information in time slot n, and when upper layer parameters are given, for PDSCH group g, including the monitoring opportunity of the PDCCH corresponding to the DCI format that meets the conditions in the set of monitoring opportunities of the PDCCH for time slot n, and generating the HARQ-ACK information based on at least the set of monitoring opportunities of the PDCCH for time slot n, wherein the conditions are as follows: Condition 1 is that the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is sent in batch n; Condition 2 is that the PDSCH group g is represented by the PGI field included in the DCI format.

[0018] (8) The eighth scheme of the present invention is a communication method for a terminal device, which includes: receiving a DCI format for scheduling of a PDSCH, sending HARQ-ACK information in a time slot n, and when an upper layer parameter is given, for a PDSCH group g, when it is detected that the NFI bit is flipped compared with the previously received NFI bit, deleting a set of monitoring opportunities of a saved PDCCH, setting the set of monitoring opportunities of the saved PDCCH to a set of monitoring opportunities of a first PDCCH, and the set of monitoring opportunities of a second PDCCH includes a DC with a value of K1 representing a non-numeric value. I format, the set of monitoring opportunities for the third PDCCH includes the monitoring opportunities for the PDCCH corresponding to the DCI format of the value of K1 representing the numerical value, the set of monitoring opportunities for the PDCCH for time slot n includes the set of monitoring opportunities for the first PDCCH, the set of monitoring opportunities for the second PDCCH and the set of monitoring opportunities for the third PDCCH, the determined set of monitoring opportunities for the PDCCH for the time slot n is saved, and the HARQ-ACK information is generated at least based on the set of monitoring opportunities for the PDCCH for the time slot n.

[0019] (9) The ninth scheme of the present invention is a communication method for a terminal device, which includes: receiving a DCI format for scheduling PDSCH, sending HARQ-ACK information in time slot n, and when upper layer parameters are given, for PDSCH group g, when it is detected that the NFI bit is flipped compared with the previously received NFI bit, deleting the set of saved PDCCH monitoring opportunities, adding the PDCCH monitoring opportunity corresponding to the DCI format of the value of K1 representing a non-numeric value to the set of saved PDCCH monitoring opportunities for saving, the set of third PDCCH monitoring opportunities includes the PDCCH monitoring opportunity corresponding to the DCI format of the value of K1 representing a numeric value, the set of PDCCH monitoring opportunities for time slot n includes the set of saved PDCCH monitoring opportunities and the set of third PDCCH monitoring opportunities, saving the determined set of PDCCH monitoring opportunities for time slot n, and generating the HARQ-ACK information at least based on the set of PDCCH monitoring opportunities for time slot n.

[0020] (10) The tenth scheme of the present invention is a communication method for a base station device, which includes: sending a DCI format for scheduling PDSCH, receiving HARQ-ACK information in time slot n, and when upper layer parameters are given, for PDSCH group g, the monitoring opportunity of the PDCCH corresponding to the DCI format that meets the conditions is included in the set of monitoring opportunities of the PDCCH for time slot n, and receiving the HARQ-ACK information generated at least based on the set of monitoring opportunities of the PDCCH for time slot n, and the conditions are as follows: Condition 1 is that the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is sent in batch n; Condition 2 is that the PDSCH group g is represented by the PGI field included in the DCI format.

[0021] (11) The eleventh scheme of the present invention is a communication method for a base station device, which includes: sending a DCI format for scheduling of a PDSCH, receiving HARQ-ACK information in a time slot n, and when an upper layer parameter is given, for a PDSCH group g, when it is detected that the NFI bit is flipped compared to the previously received NFI bit, deleting a set of monitoring opportunities for a saved PDCCH, the set of monitoring opportunities for a first PDCCH is the set of monitoring opportunities for the saved PDCCH, and the set of monitoring opportunities for a second PDCCH includes a DCI format corresponding to a value of K1 representing a non-numeric value. The set of monitoring opportunities for the PDCCH corresponding to the format, the set of monitoring opportunities for the third PDCCH includes the monitoring opportunities for the PDCCH corresponding to the DCI format of the value of K1 representing the numerical value, the set of monitoring opportunities for the PDCCH for time slot n includes the set of monitoring opportunities for the first PDCCH, the set of monitoring opportunities for the second PDCCH and the set of monitoring opportunities for the third PDCCH, the determined set of monitoring opportunities for the PDCCH for time slot n is saved, and the HARQ-ACK information generated at least based on the set of monitoring opportunities for the PDCCH for time slot n is received.

[0022] (12) The twelfth scheme of the present invention is a communication method for a base station device, which includes: sending a DCI format for scheduling PDSCH, receiving HARQ-ACK information in time slot n, when upper layer parameters are given, for PDSCH group g, when it is detected that the NFI bit is flipped compared with the previously received NFI bit, the set of saved PDCCH monitoring opportunities is deleted, the PDCCH monitoring opportunity corresponding to the DCI format representing the value of K1 of a non-numeric value is attached to the set of saved PDCCH monitoring opportunities for storage, the set of third PDCCH monitoring opportunities includes the PDCCH monitoring opportunity corresponding to the DCI format representing the value of K1 of a numeric value, the set of PDCCH monitoring opportunities for time slot n includes the set of saved PDCCH monitoring opportunities and the set of third PDCCH monitoring opportunities, the determined set of PDCCH monitoring opportunities for time slot n is stored, and the HARQ-ACK information generated at least based on the set of PDCCH monitoring opportunities for time slot n is received.

[0023] Beneficial effects

[0024] According to one aspect of the present invention, a terminal device can communicate efficiently. In addition, a base station device can communicate efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment.

[0026] Figure 2 N represents one aspect of this embodiment. slot symb , an example of the relationship between the subcarrier spacing setting μ, the time slot setting, and the CP setting.

[0027] Figure 3 This is a schematic diagram showing an example of a resource grid in a subframe according to one aspect of the present embodiment.

[0028] Figure 4 This is a diagram showing an example of monitoring opportunities of a search area set according to one aspect of this embodiment.

[0029] Figure 5 This is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of the present embodiment.

[0030] Figure 6 It is a schematic block diagram showing the configuration of the base station apparatus 3 according to one aspect of the present embodiment.

[0031] Figure 7This is a diagram showing an example of correspondence between a monitoring opportunity for a search space set (Monitoring occasion for search space set) and a monitoring opportunity for PDCCH (Monitoring occasion for PDCCH) according to one aspect of the present embodiment.

[0032] Figure 8 This is a diagram showing a configuration example of a set of monitoring opportunities for the PDCCH in time slot n according to one aspect of the present embodiment.

[0033] Figure 9 1 is a diagram showing an example of determining a set of monitoring opportunities for the PDCCH in time slot n according to one scheme in this embodiment.

[0034] Figure 10 1 is a diagram showing an example of determining a set of monitoring opportunities for the PDCCH in time slot n according to one scheme in this embodiment.

[0035] Figure 11 This is a diagram showing an example of a HARQ-ACK codebook construction process according to one aspect of this embodiment.

[0036] Figure 12 This is a diagram showing an example of a HARQ-ACK codebook construction process according to one aspect of this embodiment.

[0037] Figure 13 This is a diagram showing an example of a HARQ-ACK codebook construction process according to one aspect of this embodiment. DETAILED DESCRIPTION

[0038] Hereinafter, embodiments of the present invention will be described.

[0039] “A and / or B” may be a term including “A”, “B” or “A and B”.

[0040] ceil(A) is a function that rounds A to a ceiling. ceil(A) can be a function that outputs the smallest integer not less than A. log2(B) is a function that returns the logarithm of B with a base of 2.

[0041] A parameter or information indicating one or more values may be the parameter or the information at least including the parameter or information indicating the one or more values. An upper-layer parameter may be a single upper-layer parameter. An upper-layer parameter may also be an information element (IE: Information Element) including multiple parameters.

[0042] Figure 1 This is a conceptual diagram of a wireless communication system according to one embodiment of the present invention. Figure 1In the wireless communication system, there are terminal devices 1A to 1C and a base station device 3. Hereinafter, the terminal devices 1A to 1C are also referred to as terminal devices 1.

[0043] The base station device 3 can 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 service cells that includes at least a PCell (Primary Cell). The SCG is a group of service cells that includes at least a PSCell (Primary Secondary Cell). The PCell can be a service cell given based on the initial connection. The MCG can also be configured to include one or more SCells (Secondary Cell). The SCG can also be configured to include one or more SCells. The serving cell identifier (serving cell identity) is a short identifier for identifying a serving cell. The serving cell identifier can be given by an upper layer parameter.

[0044] The following describes the frame structure.

[0045] In a wireless communication system according to one embodiment of the present invention, at least OFDM (Orthogonal Frequency Division Multiplex) is used. An OFDM symbol is the time-domain unit of OFDM. An OFDM symbol includes at least one or more subcarriers. An OFDM symbol can be converted into a time-continuous signal during baseband signal generation.

[0046] Subcarrier Spacing (SCS) can be determined by subcarrier spacing Δf=2 μ For example, the subcarrier spacing configuration μ may be set to any one of 0, 1, 2, 3, 4, and / or 5. The subcarrier spacing configuration μ may be given by an upper layer parameter for a certain BWP (BandWidth Part).

[0047] In a wireless communication system according to one aspect of this embodiment, a time unit T is used. c To express the length of the time domain. Time unit T c Can be T c =1 / (Δf max ·N f) is given by Δf max It can be the maximum value of the subcarrier spacing supported by the wireless communication system of one solution of this embodiment. max It can also be Δf max =480kHz. N f Can be N f =4096. The constant κ is κ = Δf max ·N f / (Δf ref N f，ref )=64. Δf ref It can be 15kHz. f，ref It can be 2048.

[0048] The constant κ can also represent the reference subcarrier spacing and T c The constant κ may be used for the length of the subframe. The number of time slots included in the subframe may be given based at least on the constant κ. Δf ref is the reference subcarrier spacing, N f，ref is the value corresponding to the reference subcarrier spacing.

[0049] Downlink and / or uplink transmissions consist of 10ms frames. Each frame consists of 10 subframes. Each subframe is 1ms long. The frame length can be determined independently of the subcarrier spacing Δf. In other words, the frame configuration can be determined independently of μ. The subframe length can also be determined independently of the subcarrier spacing Δf. In other words, the subframe configuration can also be determined independently of μ.

[0050] The number and index of the time slots included in the subframe can be given for setting μ for a certain subcarrier spacing. For example, the first time slot number n μ s It can be 0~N in a subframe subframe，μ slot -1 in ascending order. The number and index of the time slots included in the frame can also be given for setting the subcarrier spacing μ. For example, the second time slot number n μ s，f It can be 0~N in the frame frame，μ slot -1 range is given in ascending order. slot symb OFDM symbols can be included in one time slot. slot symbThe first slot number and the second slot number may be given based on at least part or all of the slot configuration and / or CP (Cyclic Prefix) configuration. The slot configuration may be given at least by the upper layer parameter tdd-UL-DL-ConfigurationCommon. The CP configuration may be given based on at least the upper layer parameter. The CP configuration may also be given based on at least dedicated RRC signaling. The first slot number and the second slot number are also referred to as slot numbers (slot indices).

[0051] Figure 2 N represents one aspect of this embodiment. slot symb An example of the relationship between the setting μ of the subcarrier spacing and the CP setting. Figure 2 In A, for example, when the subcarrier spacing μ is set to 2 and the CP is set to a normal CP (normal cyclic prefix), N slot symb =14, N frame，μ slot =40, N subframe，μ slot =4. In addition, Figure 2 In B, for example, when the subcarrier spacing μ is set to 2 and the CP is set to an extended cyclic prefix (CP), N slot symb =12, N frame，μ slot =40, N subframe，μ slot =4.

[0052] The following describes physical resources.

[0053] Antenna ports are defined as follows: the channel through which symbols are transmitted on one antenna port can be estimated based on the channel through which other symbols are transmitted on the same antenna port. When the large-scale properties of the channel through which symbols are transmitted on one antenna port can be estimated based on the channel through which symbols are transmitted on another antenna port, the two antenna ports are said to be quasi co-located (QCL). These large-scale properties may include at least the long-range properties of the channel. These large-scale properties may also include at least some or all of the following: delay spread, Doppler spread, Doppler shift, average gain, average delay, and beam parameters (spatial Rx parameters). The first and second antenna ports being QCL with respect to beam parameters may mean that the receive beam assumed by the receiver for the first antenna port and the receive beam assumed by the receiver for the second antenna port are the same. The first and second antenna ports being QCL with respect to beam parameters may also mean that the transmit beam assumed by the receiver for the first antenna port and the transmit beam assumed by the receiver for the second antenna port are the same. Terminal device 1 may assume that both antenna ports are QCL when the large-scale characteristics of the channel through which symbols are transmitted through one antenna port can be estimated from the channel through which symbols are transmitted through the other antenna port.

[0054] Given N μ RB，x N RB sc subcarriers and N (μ) symb N subframe，μ symb The resource grids of OFDM symbols are used to set the subcarrier spacing and the set of carriers. μ RB，x N can represent the number of resource blocks given for setting μ for the subcarrier spacing of carrier x. μ RB，x It can also be the maximum number of resource blocks given for setting the subcarrier spacing μ for carrier x. Carrier x represents either a downlink carrier or an uplink carrier. That is, x is "DL" or "UL". N μ RB Yes, including N μ RB，DL and / or N μ RB，UL the title. N RB scThe number of subcarriers included in a resource block can be represented. At least one resource grid can be given for each antenna port p and / or for each subcarrier spacing setting μ and / or for each transmission direction (Transmission direction) setting. The transmission direction includes at least downlink (DL: DownLink) and uplink (UL: UpLink). Hereinafter, a set of parameters that includes at least part or all of the antenna port p, the subcarrier spacing setting μ, and the transmission direction setting is also referred to as a first wireless parameter set. That is, one resource grid can be given for each first wireless parameter set.

[0055] The carrier included in the serving cell in the downlink is called a downlink carrier (or downlink component carrier). The carrier included in the serving cell in the uplink is called an uplink carrier (uplink component carrier). The downlink component carrier and the uplink component carrier are collectively referred to as component carriers (or carriers).

[0056] Each element in the resource grid given by each first radio parameter set is called a resource element. The resource element is represented by the frequency domain index k sc and the time domain index l sym For a first radio parameter set, the resource element is determined by the frequency domain index k sc and the time domain index l sym Determine. By the frequency domain index k sc and the time domain index l sym The determined resource element is also called resource element (k sc , l sym ). Frequency domain index k sc Indicates 0 to N μ RB N RB sc Any value between -1. N μ RB It can be the number of resource blocks given for setting the subcarrier spacing μ. RB sc is the number of subcarriers included in the resource block, N RB sc = 12. Frequency domain index k sc Can correspond to subcarrier index k sc . Time domain index l sym May correspond to OFDM symbol index l sym .

[0057] Figure 3 FIG. 1 is a schematic diagram showing an example of a resource grid in a subframe according to one embodiment of the present invention. Figure 3 In the resource grid, the horizontal axis is the index l in the time domainsym , the vertical axis is the index k in the frequency domain sc In a subframe, the frequency domain of the resource grid includes N μ RB N RB sc In one subframe, the time domain of the resource grid can include 14·2 μ OFDM symbols. A resource block consists of N RB sc The time domain of a resource block can correspond to one OFDM symbol. The time domain of a resource block can also correspond to 14 OFDM symbols. The time domain of a resource block can also correspond to one or more time slots. The time domain of a resource block can also correspond to one subframe.

[0058] The terminal device 1 can instruct to use only a subset of the resource grid for transmission and reception. The subset of the resource grid is also called BWP, and the BWP can be given based on at least part or all of the upper layer parameters and / or DCI. BWP is also called partial bandwidth (BP: bandwidth part). That is, the terminal device 1 may not instruct to use all sets of resource grids for transmission and reception. That is, the terminal device 1 may also instruct to use a part of the frequency resources within the resource grid for transmission and reception. A BWP can be composed of multiple resource blocks in the frequency domain. A BWP can also be composed of multiple resource blocks that are continuous in the frequency domain. The BWP set for the downlink carrier is also called the downlink BWP. The BWP set for the uplink carrier is also called the uplink BWP.

[0059] One or more downlink BWPs may be set for the terminal device 1. The terminal device 1 may attempt to receive a physical channel (e.g., PDCCH, PDSCH, SS / PBCH, etc.) in one of the one or more downlink BWPs. This one downlink BWP is also called an activated downlink BWP.

[0060] One or more uplink BWPs may be configured for the terminal device 1. The terminal device 1 may attempt to transmit a physical channel (e.g., PUCCH, PUSCH, PRACH, etc.) in one of the one or more uplink BWPs. This one uplink BWP is also referred to as an activated uplink BWP.

[0061] 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 also be configured for each serving cell. The set of uplink BWPs may include one or more uplink BWPs.

[0062] Upper layer parameters are parameters included in upper layer signals. Upper layer signals can be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Control Element). Here, upper layer signals can be RRC layer signals or MAC layer signals.

[0063] The upper layer signal may be common RRC signaling. Common RRC signaling may include at least part or all of the following features C1 to C3.

[0064] Feature C1) Mapping to BCCH logical channel or CCCH logical channel

[0065] Feature C2) includes at least the radioResourceConfigCommon information element. Feature C3) is mapped to the PBCH.

[0066] The radioResourceConfigCommon information element may include information indicating common settings across the serving cell. The common settings across the serving cell may include at least PRACH settings. The PRACH settings may include at least one or more random access preamble indices. The PRACH settings may also include at least the time / frequency resources of the PRACH.

[0067] The upper layer signal may also be dedicated RRC signaling. Dedicated RRC signaling may have at least some or all of the following characteristics D1 to D2.

[0068] Feature D1) is mapped to the DCCH logical channel

[0069] Feature D2) includes at least the radioResourceConfigDedicated information element

[0070] The radioResourceConfigDedicated information element may include at least information indicating a configuration specific to the terminal device 1. The radioResourceConfigDedicated information element may also include at least information indicating a configuration of a BWP. The configuration of the BWP may indicate at least a frequency resource of the BWP.

[0071] For example, the MIB, first system information, and second system information may be included in common RRC signaling. Furthermore, messages mapped to the DCCH logical channel and including at least the radioResourceConfigCommon information element may be included in common RRC signaling. Furthermore, messages mapped to the DCCH logical channel and not including the radioResourceConfigCommon information element may be included in dedicated RRC signaling. Furthermore, messages mapped to the DCCH logical channel and including at least the radioResourceConfigDedicated information element may be included in dedicated RRC signaling.

[0072] The first system information may at least indicate a time index of a synchronization signal (SS) block. An SS block is also referred to as an SS / PBCH block. An SS / PBCH block is also referred to as an SS / PBCH. The first system information may also at least include information associated with a PRACH resource. The first system information may also at least include information associated with initial connection setup. The second system information may be system information other than the first system information.

[0073] The radioResourceConfigDedicated information element may include at least information associated with PRACH resources. The radioResourceConfigDedicated information element may also include at least information associated with the setup of an initial connection.

[0074] The following describes the physical channels and physical signals of various schemes of this embodiment.

[0075] An uplink physical channel may correspond to a set of resource elements that carry information generated by an upper layer. An uplink physical channel is a physical channel used in an uplink carrier. In a wireless communication system according to one aspect of this embodiment, at least some or all of the following uplink physical channels are used.

[0076] PUCCH (Physical Uplink Control Channel)

[0077] PUSCH (Physical Uplink Shared CHannel)

[0078] PRACH (Physical Random Access Channel)

[0079] PUCCH can be used to transmit uplink control information (UCI). Uplink control information includes some or all of the following: channel state information (CSI), scheduling request (SR), and HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) corresponding to the transport block (TB, MAC PDU, DL-SCH, PDSCH).

[0080] The HARQ-ACK information may include at least a HARQ-ACK bit corresponding to at least one transport block. The HARQ-ACK bit may represent an ACK (acknowledgement: positive acknowledgment) or NACK (negative-acknowledgement: negative acknowledgment) corresponding to one or more transport blocks. The HARQ-ACK information may also include at least a HARQ-ACK codebook containing one or more HARQ-ACK bits. The correspondence between the HARQ-ACK bit and one or more transport blocks may be that the HARQ-ACK bit corresponds to a PDSCH including the one or more transport blocks. The HARQ-ACK bit may also represent an ACK or NACK corresponding to a CBG (Code Block Group: code block group) included in the transport block.

[0081] The scheduling request (SR) can be used at least to request resources for the PUSCH for initial transmission. The scheduling request bit can be used to indicate either a positive SR or a negative SR. The scheduling request bit indicating a positive SR is also referred to as "sending a positive SR". A positive SR can indicate that the terminal device 1 requests resources for the PUSCH for initial transmission. A positive SR can also indicate that the scheduling request is triggered (Trigger) by an upper layer. A positive SR can be sent when indicating that the scheduling request is sent by the upper layer. A scheduling request bit indicating a negative SR is also referred to as "sending a negative SR". A negative SR can indicate that the terminal device 1 does not request resources for the PUSCH for initial transmission. A negative SR can also indicate that the scheduling request is not triggered by an upper layer. A negative SR can be sent when not indicating that the scheduling request is sent by an upper layer.

[0082] Channel state information may include at least part or all of the Channel Quality Indicator (CQI), the Precoder Matrix Indicator (PMI), and the Rank Indicator (RI). The CQI is an indicator associated with channel quality (e.g., transmission strength), the PMI is an indicator indicating precoding, and the RI is an indicator indicating the transmission rank (or number of transmission layers).

[0083] PUCCH supports PUCCH formats (PUCCH format 0 to PUCCH format 4). PUCCH formats can be mapped and sent to PUCCH. PUCCH formats can be sent via PUCCH. Sending PUCCH formats can be sending PUCCH.

[0084] The PUSCH is used to transmit at least transport blocks (TBs, MAC PDUs, UL-SCHs, and PUSCHs). The PUSCH may also be used to transmit at least transport blocks, HARQ-ACK information, channel state information, and part or all of a scheduling request. The PUSCH is used to transmit at least random access message 3.

[0085] The PRACH is used to transmit at least a random access preamble (random access message 1). The PRACH may also be used to indicate at least part or all of the initial connection establishment procedure, the handover procedure, the connection re-establishment procedure, synchronization (timing adjustment) for PUSCH transmission, and a request for PUSCH resources. The random access preamble may be used to notify the base station apparatus 3 of an index (random access preamble index) given by an upper layer of the terminal apparatus 1.

[0086] exist Figure 1 In uplink wireless communication, the following uplink physical signals are used. The uplink physical signals may not be used to transmit information output from an upper layer, but are used by the physical layer.

[0087] UL DMRS (UpLink Demodulation Reference Signal)

[0088] SRS (Sounding Reference Signal)

[0089] UL PTRS (UpLink Phase Tracking Reference Signal)

[0090] UL DMRS is associated with the transmission of PUSCH and / or PUCCH. UL DMRS is multiplexed with PUSCH or PUCCH. The base station device 3 can use UL DMRS to perform transmission path correction for PUSCH or PUCCH. Hereinafter, transmitting PUSCH and UL DMRS associated with the PUSCH together will be referred to as simply transmitting PUSCH. Hereinafter, transmitting PUCCH and UL DMRS associated with the PUCCH together will be referred to as simply transmitting PUCCH. UL DMRS associated with PUSCH is also referred to as UL DMRS for PUSCH. UL DMRS associated with PUCCH is also referred to as UL DMRS for PUCCH.

[0091] The SRS may not be associated with the transmission of the PUSCH or PUCCH. The base station apparatus 3 may use the SRS to measure the channel state. The SRS may be transmitted at the end of a subframe in an uplink slot or in a predetermined number of OFDM symbols before the end.

[0092] The UL PTRS may be a reference signal used at least for phase tracking. The UL PTRS may be associated with a UL DMRS group that includes at least antenna ports for one or more UL DMRSs. The association of the UL PTRS with the UL DMRS group may mean that the antenna port of the UL PTRS and some or all of the antenna ports included in the UL DMRS group are at least QCLs. The UL DMRS group may be identified based at least on the antenna port with the smallest index among the UL DMRSs included in the UL DMRS group. The UL PTRS may be mapped to the antenna port with the smallest index among one or more antenna ports to which a codeword is mapped. When a codeword is mapped to at least the first layer and the second layer, the UL PTRS may be mapped to the first layer. The UL PTRS may not be mapped to the second layer. The index of the antenna port to which the UL PTRS is mapped may be given based at least on downlink control information.

[0093] exist Figure 1 In the downlink wireless communication from the base station apparatus 3 to the terminal apparatus 1, the following downlink physical channels are used. The downlink physical channels are used by the physical layer to transmit information output from the upper layer.

[0094] PBCH (Physical Broadcast Channel)

[0095] PDCCH (Physical Downlink Control Channel)

[0096] PDSCH (Physical Downlink Shared Channel)

[0097] PBCH is used at least to send the master information block (MIB: Master Information Block, BCH, Broadcast Channel). PBCH can be sent based on a specified transmission interval. PBCH can be sent at intervals of 80ms. PBCH can also be sent at intervals of 160ms. The content of the information included in PBCH can be updated every 80ms. Part or all of the information included in PBCH can be updated every 160ms. PBCH can be composed of 288 subcarriers. PBCH can also be constructed to include 2, 3 or 4 OFDM symbols. MIB may include information associated with an identifier (index) of a synchronization signal. MIB may also include information indicating at least a part of the number of the time slot in which the PBCH is sent, the number of the subframe and / or the number of the radio frame.

[0098] The PDCCH is at least used to send downlink control information (DCI). The PDCCH may include at least downlink control information for transmission. The PDCCH may include downlink control information. The downlink control information is also called a DCI format. The downlink control information may include at least either a downlink grant or an uplink grant. The DCI format used for scheduling the PDSCH is also called a downlink DCI format. The DCI format used for scheduling the PUSCH is also called an uplink DCI format. The downlink grant is also called a downlink assignment or downlink allocation. The uplink DCI format includes at least one or both of DCI format 0_0 and DCI format 0_1.

[0099] DCI format 0_0 is configured to include at least a part or all of 1A to 1F.

[0100] 1A) Identifier for DCI formats field

[0101] 1B) Frequency domain resource assignment field

[0102] 1C) Time domain resource assignment field

[0103] 1D) Frequency hopping flag field

[0104] 1E) MCS field (MCS field: Modulation and Coding Scheme field: Modulation and Coding Scheme field)

[0105] The DCI format specific field may be used to at least indicate which of one or more DCI formats the DCI format including the DCI format specific field corresponds to. The one or more DCI formats may be given based on at least part or all of DCI format 1_0, DCI format 1_1, DCI format 0_0, and / or DCI format 0_1.

[0106] The frequency domain resource allocation field may be used at least to indicate the allocation of frequency resources for a PUSCH scheduled by a DCI format including the frequency domain resource allocation field. The frequency domain resource allocation field is also referred to as a FDRA (Frequency Domain Resource Allocation) field.

[0107] The time domain resource allocation field may be used at least to indicate allocation of time resources for a PUSCH scheduled by a DCI format including the time domain resource allocation field.

[0108] The frequency hopping flag field may be used at least to indicate whether frequency hopping is applied to a PUSCH scheduled by a DCI format including the frequency hopping flag field.

[0109] The MCS field may be used to indicate at least 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 the target coding rate for the transport block of the PUSCH. The transport block size (TBS) may be given based at least on the target coding rate.

[0110] DCI format 0_1 is configured to include at least a part or all of 2A to 2G.

[0111] 2A) DCI format specific fields

[0112] 2B) Frequency Domain Resource Allocation Field

[0113] 2C) Time Domain Resource Allocation Field

[0114] 2D) Frequency Hopping Flag Field

[0115] 2E) MCS field 2F) CSI request field (CSI request field)

[0116] 2G)BWP field

[0117] 2H) First UL DAI field (1 st downlink assignment index: first downlink assignment index)

[0118] 2I) Second UL DAI field (2 nd downlink assignment index: second downlink assignment index)

[0119] The first UL DAI field is used to indicate at least the transmission status of the PDSCH. When a dynamic HARQ-ACK codebook is used, the size of the first UL DAI field may be 2 bits.

[0120] The second UL DAI field is used to indicate at least the transmission status of the PDSCH. When a dynamic HARQ-ACK codebook including two sub-codebooks is used, the size of the second UL DAI field may be 2 bits.

[0121] The BWP field may be used to indicate an uplink BWP to which a PUSCH scheduled by DCI format 0_1 is mapped.

[0122] The CSI request field is used to indicate at least a CSI report. The size of the CSI request field may be given based on at least a parameter ReportTriggerSize (report trigger size) of an upper layer.

[0123] The downlink DCI format includes at least one or both of DCI format 1_0 and DCI format 1_1.

[0124] DCI format 1_0 is configured to include at least a part or all of 3A to 3K.

[0125] 3A) Identifier for DCI formats field

[0126] 3B) Frequency domain resource assignment field

[0127] 3C) Time domain resource assignment field

[0128] 3D) Frequency hopping flag field

[0129] 3E)MCS field (MCS field: Modulation and Coding Scheme field)

[0130] 3F) First CSI request field

[0131] 3G)PDSCH-to-HARQ feedback timing indicator field

[0132] 3H) PUCCH resource indicator field

[0133] 3I) First PGI field (first PDSCH Group Indicator field)

[0134] 3J) First NFI field (first New Feedback Indicator field)

[0135] 3K) First Requested PDSCH Group Indicator field

[0136] 3L) First DAI field (first Downlink Assignment Index field)

[0137] The timing indication field from PDSCH to HARQ feedback may be a field indicating timing K1. In the case where the index of the time slot including the OFDM symbol at the end of the PDSCH is time slot n, the index of the time slot including the PUCCH or PUSCH may be n+K1, and the PUCCH or PUSCH includes at least the HARQ-ACK information corresponding to the transport block included in the PDSCH. In the case where the index of the time slot including the OFDM symbol at the end of the PDSCH is time slot n, the index of the time slot including the OFDM symbol at the start of the PUCCH or the OFDM symbol at the start of the PUSCH may be n+K1, and the OFDM symbol at the start of the PUCCH or the OFDM symbol at the start of the PUSCH may include at least the HARQ-ACK information corresponding to the transport block included in the PDSCH.

[0138] Hereinafter, the PDSCH-to-HARQ feedback timing indicator field (PDSCH-to-HARQ_feedback timingindicator field) may also be referred to as a HARQ indication field.

[0139] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set.

[0140] The details of the first PGI field, the first NFI field, the first RPGI field, and the first DAI field will be described later.

[0141] DCI format 1_1 is configured to include at least a part or all of 4A to 4M.

[0142] 4A) Identifier for DCI formats field

[0143] 4B) Frequency domain resource assignment field

[0144] 4C) Time domain resource assignment field

[0145] 4D) Frequency hopping flag field

[0146] 4E)MCS field (MCS field: Modulation and Coding Scheme field)

[0147] 4F) First CSI request field

[0148] 4G)PDSCH-to-HARQ feedback timing indicator field

[0149] 4H) PUCCH resource indicator field

[0150] 4J) BWP field

[0151] 4K) second PGI field (second PDSCH Group Indicator field)

[0152] 4L) Second NFI field (second New Feedback Indicator field)

[0153] 4M) Second RPGI field (second Requested PDSCH Group Indicator field)

[0154] 4N) Second DAI field (second Downlink Assignment Index field)

[0155] The BWP field may be used to indicate a downlink BWP to which a PDSCH scheduled by DCI format 1_1 is mapped.

[0156] The second PGI field, the second NFI field, the second RPGI field, and the second DAI field will be described later.

[0157] The DCI format 2_0 may be configured to include at least one or more slot format indicators (SFI: Slot Format Indicator).

[0158] Each DCI format (DCI format 1_0, DCI format 1_1, DCI format 0_0 and / or DCI format 0_1, DCI format 1_1) may include fields different from the above-mentioned fields.

[0159] In various solutions of this embodiment, unless otherwise specified, the number of resource blocks refers to the number of resource blocks in the frequency domain.

[0160] The downlink grant is used to schedule at least one PDSCH in one serving cell.

[0161] The uplink grant is used to schedule at least one PUSCH in one serving cell.

[0162] A physical channel can be mapped to a serving cell. A physical channel can also be mapped to a BWP configured for a carrier included in a serving cell.

[0163] One or more control resource sets (CORESET: COntrol REsourceSET) can be set in the terminal device 1. The terminal device 1 monitors (monitor) PDCCH in one or more control resource sets. Here, monitoring PDCCH in one or more control resource sets may include monitoring one or more PDCCHs corresponding to one or more control resource sets, respectively. It should be noted that the PDCCH may include one or more PDCCH candidates and / or a set of PDCCH candidates. In addition, monitoring the PDCCH may include monitoring and detecting the PDCCH and / or the DCI format sent via the PDCCH.

[0164] A control resource set may represent a time domain / frequency domain to which one or more PDCCHs can be mapped. A control resource set may be an area where terminal device 1 monitors PDCCHs. A control resource set may be composed of contiguous resources (localized resources) or non-contiguous resources (distributed resources).

[0165] In the frequency domain, the mapping unit for a control resource set can be a resource block. For example, in the frequency domain, the mapping unit for a control resource set can be six resource blocks. In the time domain, the mapping unit for a control resource set can be an OFDM symbol. For example, in the time domain, the mapping unit for a control resource set can be one OFDM symbol.

[0166] The mapping of the control resource set to the resource block may be given based on at least a higher layer parameter. The higher layer parameter may include a bitmap for a resource block group (RBG). The resource block group may be given by 6 consecutive resource blocks.

[0167] The number of OFDM symbols constituting the control resource set may be given based on at least upper layer parameters.

[0168] A certain control resource set may be a common control resource set. A common control resource set may be a control resource set commonly set for multiple terminal devices 1. The common control resource set may be given based on at least part or all of the MIB, the first system information, the second system information, the common RRC signaling, and the cell ID. For example, the time resources and / or frequency resources of the control resource set for monitoring the PDCCH for scheduling the first system information may be given based on at least the MIB.

[0169] The control resource set set in the MIB is also referred to as CORESET#0. CORESET#0 may be the control resource set of index#0.

[0170] A control resource set may also be a dedicated control resource set. A dedicated control resource set may be a control resource set that is set to be dedicated to the terminal device 1. The dedicated control resource set may be given based on at least part or all of the dedicated RRC signaling and the C-RNTI value. Multiple control resource sets may be formed 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 also be formed in the control resource set, and an index (CCE index) may be assigned to each CCE.

[0171] The set of PDCCH candidates monitored by the terminal device 1 can be defined from the perspective of a search region. That is, the set of PDCCH candidates monitored by the terminal device 1 can be given based on the search region.

[0172] The search area may be composed of one or more PDCCH candidates of one or more aggregation levels. The aggregation level of a PDCCH candidate may indicate the number of CCEs constituting the PDCCH. A PDDCH candidate may be mapped to one or more CCEs.

[0173] The terminal device 1 may monitor at least one or more search areas in a time slot in which DRX (Discontinuous reception) is not configured. DRX may be provided based on at least upper layer parameters. The terminal device 1 may also monitor at least one or more search area sets (Search space sets) in a time slot in which DRX is not configured. Multiple search area sets may be configured in the terminal device 1. Each search area set may be assigned an index (Search area set index).

[0174] The search area set may be configured to include at least one or more search areas. An index (search area index) may be assigned to each search area.

[0175] Each search area set may be associated with at least one control resource set. Each search area set may also be included in a control resource set. Each search area set may be given an index of the control resource set associated with the search area set.

[0176] A monitoring period (Monitoring period) may be set for each search area set. The monitoring period of a search area set may at least indicate the interval of time slots during which terminal device 1 monitors the search area set. A higher-level parameter indicating at least the monitoring period of a search area set may be provided for each search area set.

[0177] A monitoring offset for each search area set may be set. The monitoring offset for a search area set may at least represent an offset from a base index (e.g., slot #0) of the index of the time slot in which terminal device 1 monitors the search area set. A higher-level parameter representing at least the monitoring offset for the search area set may be provided for each search area set.

[0178] A monitoring pattern for a search area set may also be set for each search area set. The monitoring pattern for a search area set may indicate the OFDM symbol at the start of the search area set for monitoring. The monitoring pattern for a search area set may be represented by a bitmap representing the OFDM symbol at the start of the search area set in one or more time slots. At least the upper-level parameters representing the monitoring pattern for the search area set may be provided for each search area set.

[0179] A monitoring occasion of the search area set may be given based on at least a portion or all of a monitoring interval of the search area set, a monitoring offset of the search area set, a monitoring pattern of the search area set, and / or a DRX setting.

[0180] Figure 4 FIG. 1 is a diagram showing an example of monitoring opportunities of a search area set according to one embodiment of the present invention. Figure 4 In the embodiment, search area set 91 and search area set 92 are set in the primary cell 301 , search area set 93 is set in the secondary cell 302 , and search area set 94 is set in the secondary cell 303 .

[0181] exist Figure 4 In FIG, the blocks indicated by grid lines represent search area set 91, the blocks indicated by upper right diagonal lines represent search area set 92, the blocks indicated by upper left diagonal lines represent search area set 93, and the blocks indicated by horizontal lines represent search area set 94.

[0182] The monitoring interval for search area set 91 is set to 1 slot, the monitoring offset for search area set 91 is set to 0 slots, and the monitoring pattern for search area set 91 is set to [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0]. In other words, the monitoring opportunities for search area set 91 are the starting OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each slot.

[0183] The monitoring interval for search area set 92 is set to 2 slots, the monitoring offset for search area set 92 is set to 0 slots, and the monitoring pattern for search area set 92 is set to [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunity for search area set 92 is the starting OFDM symbol (OFDM symbol #0) in each even-numbered slot.

[0184] The monitoring interval for search area set 93 is set to 2 slots, the monitoring offset for search area set 93 is set to 0 slots, and the monitoring pattern for search area set 93 is set to [0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0]. In other words, the monitoring opportunity for search area set 93 is the 8th OFDM symbol (OFDM symbol #7) in each even-numbered slot.

[0185] The monitoring interval for search area set 94 is set to 2 slots, the monitoring offset for search area set 94 is set to 1 slot, and the monitoring pattern for search area set 94 is set to [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunity for search area set 94 is the starting OFDM symbol (OFDM symbol #0) in each odd-numbered slot.

[0186] The physical resources of the search area are composed of control channel components (CCE: Control Channel Element). CCE is composed of a specified number of resource element groups (REG: Resource Element Group). For example, a CCE can be composed of 6 REGs. A REG can be composed of one OFDM symbol of one PRB (Physical Resource Block). In other words, a REG can be constructed to include 12 resource elements (RE: Resource Element). PRB is also simply called RB (Resource Block: Resource Block).

[0187] The PDSCH is used to transmit at least a transport block, at least a random access message 2 (random access response), and at least system information including parameters for initial access.

[0188] exist Figure 1 In downlink wireless communications, the following downlink physical signals are used. Downlink physical signals may not be used to transmit information output from upper layers, but are used by the physical layer.

[0189] Synchronization signal (SS)

[0190] DL DMRS (DownLink DeModulation Reference Signal)

[0191] CSI-RS (Channel State Information-Reference Signal)

[0192] DL PTRS (DownLink Phase Tracking Reference Signal)

[0193] The synchronization signal is used for the terminal device 1 to achieve downlink frequency domain and / or time domain synchronization. The synchronization signal includes a PSS (Primary Synchronization Signal) and an SSS (Secondary Synchronization Signal).

[0194] The SS block (SS / PBCH block) is configured to include at least a part or all of the PSS, SSS, and PBCH.

[0195] The DL DMRS is associated with the transmission of the PBCH, PDCCH, and / or PDSCH. The DL DMRS is multiplexed onto the PBCH, PDCCH, and / or PDSCH. The terminal device 1 can use the DL DMRS corresponding to the PBCH, PDCCH, or PDSCH to perform transmission path correction for the PBCH, PDCCH, or PDSCH.

[0196] The CSI-RS may be a signal used at least for calculating channel state information. The CSI-RS pattern assumed by the terminal device may be given by at least a higher layer parameter.

[0197] The PTRS may be a signal used at least for compensation of phase noise.The pattern of the PTRS assumed by the terminal device may be given based on at least upper layer parameters and / or DCI.

[0198] A DL PTRS may be associated with a DL DMRS group including at least an antenna port for one or more DL DMRSs.

[0199] Downlink physical channels and downlink physical signals are also referred to as downlink signals. Uplink physical channels and uplink physical signals are also referred to as uplink signals. Downlink signals and uplink signals are also collectively referred to as physical signals. Downlink signals and uplink signals are also collectively referred to as signals. Downlink physical channels and uplink physical channels are collectively referred to as physical channels. Downlink physical signals and uplink physical signals are collectively referred to as physical signals.

[0200] BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels. The channels used in the Medium Access Control (MAC) layer are called transport channels. The unit of the transport channel used in the MAC layer is also called a transport block (TB) or MAC PDU. The MAC layer controls HARQ (Hybrid Automatic Repeat reQuest) for each transport block. A transport block is the unit of data delivered by the MAC layer to the physical layer. In the physical layer, the transport block is mapped to a codeword, and modulation processing is performed on each codeword.

[0201] The base station device 3 and the terminal device 1 exchange (transmit and receive) upper layer signals at the upper layer. For example, the base station device 3 and the terminal device 1 can transmit and receive RRC signaling (RRC message: Radio Resource Control message, RRC information: Radio Resource Control information) at the Radio Resource Control (RRC) layer. In addition, the base station device 3 and the terminal device 1 can also transmit and receive MAC CE (Control Element: Control Element) at the MAC layer. Here, RRC signaling and / or MAC CE are also referred to as upper layer signals (higher layer signaling).

[0202] PUSCH and PDSCH can be used at least to send RRC signaling and / or MAC CE. Here, the RRC signaling sent by the base station device 3 through the PDSCH can be signaling that is common to multiple terminal devices 1 in the service cell. Signaling that is common to multiple terminal devices 1 in the service cell is also called common RRC signaling. The RRC signaling sent from the base station device 3 through the PDSCH can also be signaling dedicated to a certain terminal device 1 (also called dedicated signaling or UEspecific signaling). Signaling dedicated to the terminal device 1 is also called dedicated RRC signaling. Upper layer parameters specific to the service cell can be sent to multiple terminal devices 1 in the service cell using common signaling or to a certain terminal device 1 using dedicated signaling. UE-specific upper layer parameters can also be sent to a certain terminal device 1 using dedicated signaling.

[0203] BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel) and DCCH (Dedicated Control CHannel) are logical channels. For example, BCCH is an upper layer channel for sending MIB. In addition, CCCH (Common Control CHannel) is an upper layer channel for sending common information in multiple terminal devices 1. Here, CCCH can be used for terminal devices 1 that are not RRC connected, for example. In addition, DCCH (Dedicated Control CHannel) is an upper layer channel for sending dedicated control information (dedicated control information) to at least terminal device 1. Here, DCCH can be used for terminal devices 1 in RRC connection, for example.

[0204] The BCCH in a logical channel can be mapped to the BCH, DL-SCH, or UL-SCH in a transport channel. The CCCH in a logical channel can be mapped to the DL-SCH or UL-SCH in a transport channel. The DCCH in a logical channel can be mapped to the DL-SCH or UL-SCH in a transport channel.

[0205] The UL-SCH in the transport channel can be mapped to the PUSCH in the physical channel. The DL-SCH in the transport channel can be mapped to the PDSCH in the physical channel. The BCH in the transport channel can be mapped to the PBCH in the physical channel.

[0206] Hereinafter, a configuration example of the terminal device 1 according to one aspect of the present embodiment will be described.

[0207] Figure 5 This is a schematic block diagram showing the configuration of a terminal device 1 according to one embodiment of the present invention. Figure 5 As shown, the terminal device 1 is configured to include a wireless transceiver unit 10 and an upper layer processing unit 14. The wireless transceiver unit 10 is configured to include at least part or all of an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The upper layer processing unit 14 is configured to include at least part or all of a media access control layer processing unit 15 and a radio resource control layer processing unit 16. The wireless transceiver unit 10 can be configured to include at least part or all of a transmitting unit and a receiving unit.

[0208] The upper layer processing unit 14 outputs uplink data (transport blocks) generated by user operations, etc. to the wireless transceiver 10. The upper layer processing unit 14 performs processing on the MAC layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.

[0209] The media access control layer processing unit 15 included in the upper layer processing unit 14 performs processing at the MAC layer.

[0210] The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs RRC layer processing. The radio resource control layer processing unit 16 manages various configuration information and parameters of the device itself. The radio resource control layer processing unit 16 sets various configuration information and parameters based on upper layer signals received from the base station device 3. Specifically, the radio resource control layer processing unit 16 sets various configuration information and parameters based on information indicating various configuration information and parameters received from the base station device 3. It should be noted that this configuration information may include information related to processing or configuration of physical channels or physical signals (that is, the physical layer), the MAC layer, the PDCP layer, the RLC layer, and the RRC layer. These parameters may be upper layer parameters.

[0211] The wireless transceiver 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. It separates, demodulates, and decodes received physical signals and outputs the decoded information to the upper layer processing unit 14. The wireless transceiver 10 modulates and encodes data and generates a baseband signal (converting it into a time-continuous signal) to generate a physical signal, which it then transmits to the base station apparatus 3.

[0212] The RF unit 12 converts (down-converts) the signal received via the antenna unit 11 into a baseband signal by orthogonal demodulation, thereby removing unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit.

[0213] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes the portion corresponding to the cyclic prefix (CP) from the converted digital signal and performs a fast Fourier transform (FFT) on the CP-removed signal to extract a frequency-domain signal.

[0214] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the data to generate OFDM symbols, adds a CP to the generated OFDM symbols to generate a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0215] The RF unit 12 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 13, up-converts the analog signal to a carrier frequency, and transmits it via the antenna unit 11. The RF unit 12 also amplifies the power. Furthermore, the RF unit 12 may also have a function for controlling transmit power. This unit is also referred to as a transmit power control unit.

[0216] Hereinafter, a configuration example of the base station apparatus 3 according to one aspect of this embodiment will be described.

[0217] Figure 6 1 is a schematic block diagram showing the configuration of a base station device 3 according to one embodiment of the present invention. Figure 6 As shown, base station apparatus 3 includes a wireless transceiver unit 30 and an upper layer processing unit 34. Wireless transceiver unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33. Upper layer processing unit 34 includes a media access control layer processing unit 35 and a radio resource control layer processing unit 36. Wireless transceiver unit 30 may include at least a portion or all of a transmitting unit and a receiving unit.

[0218] The upper layer processing unit 34 performs processing on the MAC layer, PDCP layer, RLC layer, and RRC layer.

[0219] The media access control layer processing unit 35 included in the upper layer processing unit 34 performs MAC layer processing.

[0220] 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 or obtains downlink data (transport blocks), system information, RRC messages, MAC CE, etc. configured on the PDSCH from the upper node, and outputs them to the wireless transceiver unit 30. In addition, 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 can set various setting information / parameters for each terminal device 1 via upper layer signals. That is, the radio resource control layer processing unit 36 sends / broadcasts information indicating various setting information / parameters. It should be noted that the setting information may include information associated with the processing or setting of the physical channel or physical signal (that is, the physical layer), the MAC layer, the PDCP layer, the RLC layer, and the RRC layer. The parameter may be an upper layer parameter.

[0221] Since the function of the wireless transceiver 30 is the same as that of the wireless transceiver 10 , the description thereof will be omitted.

[0222] Each unit denoted by reference numerals 10 to 16 included in the terminal device 1 may be configured as a circuit. Each unit denoted by reference numerals 30 to 36 included in the base station device 3 may be configured as a circuit.

[0223] The terminal device 1 may implement carrier sense before sending a physical signal. In addition, the base station device 3 may implement carrier sense before sending a physical signal. Carrier sense may be energy detection implemented in a radio channel. Whether the physical signal can be sent may be determined based on the carrier sense implemented before sending the physical signal. For example, when the energy detected by the carrier sense implemented before sending the physical signal is greater than a prescribed threshold, it may be determined that the physical channel may not be sent or cannot be sent. In addition, when the energy detected by the carrier sense implemented before sending the physical signal is less than a prescribed threshold, it may be determined that the physical channel may be sent or can be sent. In addition, when the energy detected by the carrier sense implemented before sending the physical signal is equal to a prescribed threshold, the physical channel may be sent or may not be sent. That is, when the energy detected by the carrier sense implemented before sending the physical signal is equal to a prescribed threshold, it may be determined that it cannot be sent or it may be determined that it can be sent.

[0224] The process of determining whether a physical channel can be transmitted based on carrier sensing is also called LBT (Listen Before Talk). A condition in which a physical signal cannot be transmitted as a result of LBT is also called a busy state or busy. For example, a busy state may be a state in which the energy detected by carrier sensing is greater than a specified threshold. Furthermore, a condition in which a physical signal can be transmitted as a result of LBT is also called an idle state or idle. For example, an idle state may be a state in which the energy detected by carrier sensing is less than a specified threshold.

[0225] NR-U (New Radio-Unlicensed) can be applied in a component carrier. NR-U can also be applied in a serving cell. Applying NR-U in a component carrier (or serving cell) can include at least some or all of the following elements A1 to A6.

[0226] Element A1: Constructing a second SS burst set in the certain component carrier (or the certain serving cell)

[0227] Element A2: The base station device 3 transmits the second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0228] Element A3: The terminal device 1 receives the second SS / PBCH block in the certain component carrier (or the certain serving cell)

[0229] Element A4: The base station device 3 sends PDCCHs in a concentrated manner in the second type 0 PDCCH common search area of the certain component carrier (or the certain serving cell).

[0230] Element A5: The terminal device 1 receives the PDCCH in the second type 0 PDCCH common search area of the certain component carrier (or the certain serving cell)

[0231] Element A6: A higher-layer parameter associated with NR-U (e.g., a field included in the MIB) indicates a first value (e.g., 1).

[0232] NR-U (New Radio-Unlicensed) may not be applied in 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 some or all of the following elements B1 to B6.

[0233] Element B1: Constructing the first SS burst set in the certain component carrier (or the certain serving cell)

[0234] Element B2: The base station device 3 transmits the first SS / PBCH block in the certain component carrier (or the certain serving cell)

[0235] Element B3: The terminal device 1 receives the first SS / PBCH block in the certain component carrier (or the certain serving cell)

[0236] Element B4: The base station device 3 sends PDCCHs in a concentrated manner in the first type 0 PDCCH common search area of the certain component carrier (or the certain serving cell).

[0237] Element B5: The terminal device 1 receives PDCCH in the first type 0 PDCCH common search area of the certain component carrier (or the certain serving cell)

[0238] Element B6: A higher layer parameter associated with NR-U (e.g., a field included in the MIB) indicates a value different from the first value (e.g., 0).

[0239] A component carrier may be configured as a licensed band. A serving cell may be configured as a licensed band. Here, configuring a component carrier (or a serving cell) as a licensed band may include at least some or all of the following configurations 1 to 3.

[0240] Setting 1: For a component carrier (or a serving cell), upper layer parameters indicating operation in the licensed band are given, or upper layer parameters indicating operation in the unlicensed band are not given for a component carrier (or a serving cell).

[0241] Setting 2: Set a component carrier (or a serving cell) to operate in the licensed band or do not set a component carrier (or a serving cell) to operate in the unlicensed band

[0242] Scenario 3: A component carrier (or a serving cell) is included in the licensed band or a component carrier (or a serving cell) is not included in the unlicensed band

[0243] Licensed bands may be bands where wireless station authorization is required for terminal devices that (expect) to operate in these bands. Licensed bands may also be bands where operation is authorized only by terminal devices manufactured by operators (commercial entities, businesses, organizations, and enterprises) that hold wireless station authorization. Unlicensed bands may be bands where channel access is not required before transmitting physical signals.

[0244] An unlicensed band may be a band in which wireless station authorization is not requested from terminal devices that (expect) to operate in the unlicensed band. An unlicensed band may also be a band in which operation is authorized by terminal devices manufactured by some or all of the operators that maintain wireless station authorizations and / or operators that do not maintain wireless station authorizations. An unlicensed band may also be a band in which a channel intervention process is required before transmitting physical signals.

[0245] Whether NR-U is applied in a certain component carrier (or a certain serving cell) can be determined based on at least whether the certain component carrier (or the certain serving cell) is set as a frequency band that can operate in an unlicensed band (for example, a frequency band that can only operate in an unlicensed band). For example, a list of frequency bands designed for NR or carrier aggregation of NR can be specified. For example, when a certain frequency band is included in a frequency band in which one or more frequency bands in the list can operate in an unlicensed band (for example, a frequency band that can only operate in an unlicensed band), NR-U can be applied in the certain frequency band. In addition, when a certain frequency band is not included in a frequency band in which one or more frequency bands in the list can operate in an unlicensed band (for example, a frequency band that can only operate in an unlicensed band), NR-U may not be applied in the certain frequency band, but a normal NR (for example, NR of Release 15 or NR other than NR-U of Release 16) may be applied.

[0246] Whether NR-U is applied in a certain component carrier (or a certain serving cell) can be determined based on at least whether the component carrier (or the serving cell) is set to a frequency band in which NR-U can operate (for example, a frequency band that can only operate in NR-U). For example, when a list of frequency bands designed for the operation of NR or NR carrier aggregation is specified, and one or more frequency bands in the list are specified as frequency bands in which NR-U can operate (for example, a frequency band in which only NR-U can operate), if the frequency band set for the component carrier (or the serving cell) is any one of the one or more frequency bands, NR-U can be applied; if the frequency band is other than the one or more frequency bands, NR-U may not be applied, and normal NR (for example, NR of Release 15 or NR other than NR-U of Release 16) may be applied.

[0247] Whether NR-U is applied in a certain component carrier (or a certain service cell) can be determined based on the information included in the system information (for example, Master Information Block (MIB or Physical Broadcast Channel (PBCH))). For example, the MIB includes information indicating whether NR-U is applied. When the information indicates the application of NR-U, NR-U can be applied to the service cell corresponding to the MIB. On the other hand, when the information does not indicate the application of NR-U, NR-U may not be applied to the service cell corresponding to the MIB, but normal NR may be applied. Alternatively, the information may indicate whether it is possible to operate in an unlicensed band.

[0248] A component carrier may be configured as an unlicensed band. A serving cell may be configured as an unlicensed band. Here, configuring a component carrier (or a serving cell) as an unlicensed band may include at least some or all of the following settings 4 to 6.

[0249] Setting 4: For a component carrier (or a serving cell), an upper layer parameter indicating operation in an unlicensed band is given.

[0250] Setting 5: Setting a component carrier (or a serving cell) to operate in the unlicensed band

[0251] Scenario 6: A component carrier (or a serving cell) is included in the unlicensed band.

[0162] The following description assumes that NR-U is applied or not applied to the component carrier. Note that "applying NR-U to the component carrier" may mean "applying NR-U to the serving cell," and "not applying NR-U to the component carrier" may mean "not applying NR-U to the serving cell."

[0252] For example, when NR-U is not applied in a certain component carrier, the terminal device 1 can receive the first SS / PBCH block. In addition, when NR-U is not applied in a certain component carrier, the terminal device 1 can receive the first PDCCH in the first type 0 PDCCH common search area set. In addition, when NR-U is not applied in a certain component carrier, the base station device 3 can send the first SS / PBCH block. In addition, when NR-U is not applied in a certain component carrier, the base station device 3 can send the first PDCCH in the first type 0 PDCCH common search area set. The first SS / PBCH block can be received in any one of the SS / PBCH block candidates included in the first SS burst set. The first SS / PBCH block can also be sent in any one of the SS / PBCH block candidates included in the first SS burst set.

[0253] The terminal device 1 can multiplex and send uplink control information (UCI) to PUCCH. The terminal device 1 can also multiplex and send UCI to PUSCH. UCI includes: downlink channel state information (Channel State Information: CSI), a scheduling request (SR) indicating a request for PUSCH resources, and at least one of HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) information for downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU (Media Access Control Protocol Data Unit), Downlink-Shared Channel: DL-SCH (Downlink Shared Channel), Physical Downlink Shared Channel: PDSCH (Physical Downlink Shared Channel)).

[0254] HARQ control for one transport block (TB) can be called a HARQ process. HARQ control can be performed in parallel for multiple transport blocks (TBs). A HARQ process identifier can be associated with each HARQ process.

[0255] The terminal device 1 can associate a PDSCH group identifier (PGI: PDSCH Group ID) with each PDSCH. The PGI of a certain PDSCH can be indicated based on at least the DCI format used for scheduling the PDSCH. For example, a field representing the PGI (PGI field) can be included in the DCI format. For example, a PDSCH group can be a set of PDSCHs with the same PGI (PDSCH group identifier). The PDSCH group can be a PDSCH or a set of more than one PDSCHs that associate the same PGI. The number of PDSCH groups set for the terminal device 1 is N group . N group It can be 1, 2, 3, 4, or any other integer greater than 0. The number of PDSCH groups that can be set for the terminal device 1 is N. group，max For example, the terminal device 1 can be set to group，max The number of PDSCH groups corresponding to the following integer values can also be based on at least N group and / or RRC parameters to set.

[0256] The PGI field is a general term for the first PGI field and the second PGI field. The terminal device 1 can determine the PDSCH group associated with a certain PDSCH based on at least the value of the PGI field included in the DCI field used for scheduling the PDSCH.

[0257] For example, the second PGI field may be included in DCI format 1_1. For example, the number of bits N of the second PGI field may be PGI， second can be 1 or 2. For example, the number of bits N in the second PGI field PGI，second It can be calculated by ceil(log2(N group For example, the number of bits N of the second PGI field PGI，second You can also use ceil(log2(N group，max )) is given. For example, the first PGI field may also not be included in DCI format 1_0. For example, the first PGI field may be included in DCI format 1_0. For example, the number of bits N of the first PGI field PGI，first It can be 1 or 2. For example, the number of bits N in the first PGI field PGI，first It can be calculated by ceil(log2(N group For example, the number of bits N of the first PGI field PGI，first You can also use ceil(log2(N group，max )) to give.

[0258] For example, the DCI format 1_0 that does not include the first PGI field may be set for the terminal device 1, and the DCI format 1_1 that includes the second PGI field may be set. PGI，second It can be ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be greater than ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be ceil(log2(N group，max )). Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 can be associated with the PDSCH group with the smallest index (for example, the PDSCH group with index 0) among the PDSCH groups set for the terminal device 1. Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 can also be associated with the PDSCH group with the largest index (for example, the PDSCH group with index N) among the PDSCH groups set for the terminal device 1. group-1 PDSCH group). Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 may also be associated with a predetermined PDSCH group (for example, a PDSCH group fixed in advance according to the description in the specification, etc.). Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 may not be associated with the PDSCH group of N group Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_1 may also be associated with a PDSCH group determined based on at least the value of the second PGI field.

[0259] For example, the DCI format 1_0 including the first PGI field and the DCI format 1_1 including the second PGI field may be set for the terminal device 1. Here, the number of bits N of the first PGI field is PGI，first It can be ceil(log2(N group )). Here, the number of bits N of the first PGI field PGI，first It can also be greater than ceil(log2(N group )). Here, the number of bits N of the first PGI field PGI，first It can also be ceil(log2(N group，max )). Here, the number of bits of the second PGI field is N PGI，second It can be ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be greater than ceil(log2(N group )). Here, the number of bits of the second PGI field is N PGI，second It can also be ceil(log2(N group，max )). Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_0 can be associated with the PDSCH group determined based on at least the value of the first PGI field. Here, the PDSCH group of the PDSCH scheduled by the DCI format 1_1 can also be associated with the PDSCH group determined based on at least the value of the second PGI field.

[0260] The requested PDSCH group (RPG) may be a PDSCH group corresponding to the HARQ-ACK information transmitted (reported) via the next PUCCH or PUSCH. The RPG (requested PDSCH group) may include one PDSCH group or multiple PDSCH groups. The indication of the RPG may be represented in the form of a bitmap corresponding to each PDSCH group based at least on the DCI format. The RPG may be represented based at least on the RPGI field included in the DCI format. The terminal device 1 may generate a HARQ-ACK codebook for the indicated RPG and transmit (report) it via the PUCCH or PUSCH.

[0261] The RPGI field is a general term for the first RPGI field and the second RPGI field. The terminal device 1 may determine the requested PDSCH group based on at least the value of the RPGI field.

[0262] For example, the second RPGI field may be included in DCI format 1_1. For example, the first RPGI field may also not be included in DCI format 1_0. For example, the first RPGI field may be included in DCI format 1_0. For example, the number of bits N of the second RPGI field may be RPG，second Can be equal to N group For example, the number of bits in the second RPGI field is N RPG，second It can also be equal to N group，max .

[0263] For example, a DCI format 1_0 not including the first RPGI field and a DCI format 1_1 including the second RPGI field may be set for the terminal device 1. Here, the number of bits of the second RPGI field may be equal to N group Here, the number of bits of the second RPGI field may also be equal to N g roup, max Here, the detection of the DCI format 1_0 may trigger the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs associated with the PDSCH group with the smallest index (e.g., the PDSCH group with index 0). Here, the detection of the DCI format 1_0 may also trigger the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs associated with the PDSCH group with the largest index (e.g., the PDSCH group with index N). groupThe transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs associated with a specified PDSCH group (for example, a PDSCH group fixed in advance according to the specification, etc.) can also be triggered by the detection of this DCI format 1_0. The transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs associated with the specified PDSCH group (for example, a PDSCH group fixed in advance according to the specification, etc.) can also be triggered by the detection of this DCI format 1_0. group The transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs of any one of the PDSCH groups. Here, the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups indicated at least based on the second RPGI field can also be triggered by detecting the DCI format 1_1.

[0264] For example, a DCI format 1_0 including a first RPGI field and a DCI format 1_1 including a second RPGI field may be set for the terminal device 1. Here, the number of bits of the first RPGI field may be equal to N group Here, the number of bits of the first RPGI field may also be equal to N group，max Here, the number of bits of the second RPGI field may be equal to N group Here, the number of bits of the second RPGI field may also be equal to N group，max . Here, the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups represented by at least the first RPGI field can be triggered by the detection of the DCI format 1_0. Here, the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups represented by at least the second RPGI field can also be triggered by the detection of the DCI format 1_1.

[0265] The NFI (New Feedback Indicator) field may be a DCI field indicating whether HARQ-ACK information including HARQ-ACK bits corresponding to a PDSCH transport block is correctly detected. The NFI field may be a field indicating whether the HARQ-ACK bits stored in a storage medium such as a memory are erased (refreshed).

[0266] The NFI field is a general term for the first NFI field and the second NFI field.

[0267] For example, the DCI format 1_0 that does not include the first NFI field may be set for the terminal device 1, and the DCI format 1_1 that includes the second NFI field may be set. NFI，second Can be equal to N group Here, the number of bits of the second NFI field is N NFI，second Can be equal to N group，max Here, it can be assumed that the NFI of the PDSCH group with the smallest index (for example, the PDSCH group with index 0) is flipped by the detection of the DCI format 1_0. Here, it can be assumed that the NFI of the PDSCH group with the largest index (for example, the PDSCH group with index N) is flipped by the detection of the DCI format 1_0. group -1) is flipped. Here, it can also be assumed that the NFI of the specified PDSCH group (for example, the PDSCH group fixed in advance according to the description of the specification) is flipped by the detection of this DCI format 1_0. Here, it can also be assumed that the NFI of the specified PDSCH group (for example, the PDSCH group fixed in advance according to the description of the specification) is flipped. group The NFI of each PDSCH group is flipped. group The NFI of each PDSCH group is flipped. Here, the detection of the DCI format 1_1 may also trigger the transmission of one or more HARQ-ACK information corresponding to any one of the one or more transport blocks included in any one of the one or more PDSCHs corresponding to any one of the one or more PDSCH groups indicated at least based on the second NFI field. Here, the bits of the second NFI field included in the DCI format 1_1 may each correspond to a PDSCH group.

[0268] For example, the DCI format 1_0 including the first NFI field and the DCI format 1_1 including the second NFI field may be set for the terminal device 1. Here, the number of bits N of the first NFI field is NFI，first It can be 1. Here, the number of bits N of the second NFI field is NFI，second Can be equal to N group Here, the number of bits of the second NFI field is NNFI，second Can be equal to N group，max Here, the first NFI field included in the DCI format 1_0 may correspond to the PDSCH group with the smallest index (for example, the PDSCH group with index 0). Here, the first NFI field included in the DCI format 1_0 may correspond to the PDSCH group with the largest index (for example, the PDSCH group with index N group -1) corresponds to a PDSCH group. Here, the first NFI field included in the DCI format 1_0 may correspond to a specified PDSCH group (for example, a PDSCH group fixed in advance according to a specification, etc.). Here, the first NFI field included in the DCI format 1_0 may correspond to a PDSCH group associated with the PDSCH scheduled by the DCI format 1_0. Here, the bits of the second NFI field included in the DCI format 1_1 may each correspond to a PDSCH group.

[0269] For example, the DCI format 1_0 including the first NFI field and the DCI format 1_1 including the second NFI field may be set for the terminal device 1. Here, the number of bits N of the first NFI field is NFI，first Can be equal to N group Here, the number of bits of the first NFI field is N NFI，first Can be equal to N group，max Here, the number of bits of the second NFI field is N NFI，second Can be equal to N group Here, the number of bits of the second NFI field is N NFI，second Can be equal to N group，max Here, the bits of the first NFI field included in the DCI format 1_0 may correspond to one PDSCH group, respectively. Here, the bits of the second NFI field included in the DCI format 1_1 may correspond to one PDSCH group, respectively.

[0270] For example, the terminal device 1 may save the value of the NFI bit corresponding to each PDSCH group represented by the DCI format after sending the HARQ-ACK bit corresponding to the transport block included in the PDSCH scheduled by the DCI format. For example, the terminal device 1 may save the value of the NFI bit corresponding to each PDSCH group represented by the DCI format when receiving the DCI format. Here, the received NFI bit may also be referred to as the NFI bit represented by the NFI field included in the DCI format for scheduling the PDSCH for the PDSCH. Saving the NFI bit may also be referred to as the NFI bit that has been saved in the terminal device 1 for the PDSCH before the DCI format for scheduling the PDSCH is detected. For each PDSCH group, the initial value of the value of the saved NFI bit may be pre-set to 0. The terminal device 1 may compare the value of the received NFI bit with the value of the saved NFI bit to determine whether the NFI bit corresponding to the PDSCH group is flipped. In the case where the value of the received NFI bit is different from the value of the saved NFI bit, the terminal device 1 may determine that the NFI bit is flipped. The terminal device 1 may also determine that the HARQ-ACK information corresponding to the PDSCH group is detected in the base station device 3, and the value of the NFI bit for the PDSCH group (that is, the received NFI bit) is flipped compared to the value of the previously received NFI bit (that is, the stored NFI bit). For example, when the HARQ-ACK information corresponding to the PDSCH group is detected, the base station device 3 may flip the NFI bit corresponding to the PDSCH group. When the value of the received NFI bit is equal to the value of the stored NFI bit, it can be determined that the NFI bit has not been flipped. The terminal device 1 may also determine that the HARQ-ACK information corresponding to the PDSCH group is not detected in the base station device 3, and the value of the NFI bit for the PDSCH group (that is, the received NFI bit) is not flipped compared to the value of the previously received NFI bit (that is, the stored NFI bit). For example, when the HARQ-ACK information corresponding to the PDSCH group is not detected, the base station device 3 may not flip the NFI bit corresponding to the PDSCH group. Here, flipping means switching to a different value.

[0271] The receive NFI may be composed of one or more receive NFI bits. Each entry of the receive NFI may be a receive NFI bit corresponding to each PDSCH group. The store NFI may be composed of one or more store NFI bits. Each entry of the store NFI may be a store NFI bit corresponding to each PDSCH group.

[0272] The terminal device 1 may also, when generating a HARQ-ACK codebook corresponding to a certain PDSCH group, delete the reported HARQ-ACK information (HARQ-ACK information other than the HARQ-ACK information that has not yet been reported) from the HARQ-ACK codebook corresponding to the PDSCH group (or may not include it) when the NFI bit for the PDSCH group is flipped compared to the value of the NFI bit previously received (that is, the NFI bit is saved). The terminal device 1 may also not delete the HARQ-ACK information corresponding to the PDSCH (or may not include it) when there is a PDSCH that is detected in the PDSCH group and for which the HARQ-ACK information has not yet been reported. That is, the terminal device 1 may multiplex the HARQ-ACK information corresponding to the PDSCH into the above-mentioned HARQ-ACK codebook. The terminal device 1 may also, for one or more HARQ-ACK information corresponding to the PDSCH group whose NFI bit is flipped, refresh the reported HARQ-ACK information and not refresh the HARQ-ACK information that has not yet been reported. Here, refreshing means returning the HARQ-ACK information to the initial value (e.g., NACK). When the terminal device 1 receives the flipped NFI and then sends the HARQ-ACK codebook corresponding to the PDSCH group for the NFI bit, it uses the HARQ-ACK information that has not been refreshed (the HARQ-ACK information that has not been reported) to generate and send the HARQ-ACK codebook. When the terminal device 1 receives the NFI that has not been flipped and then sends the HARQ-ACK codebook corresponding to the PDSCH group for the NFI bit, it uses the HARQ-ACK information that has not been refreshed (the HARQ-ACK information that has been reported and the HARQ-ACK information that has not been reported) to generate and send the HARQ-ACK codebook.

[0273] The terminal device 1 may determine the HARQ-ACK codebook based on at least whether the NFI bit is flipped. The terminal device 1 may also determine the HARQ-ACK codebook corresponding to a certain PDSCH group based on at least whether the stored NFI bit and the received NFI bit corresponding to the certain PDSCH group are flipped.

[0274] The value of K1 (information or parameter represented by the timing indication field from PDSCH to HARQ feedback) indicated by the DCI format included in the PDCCH can be a numerical value or a non-numerical value. Here, the numerical value means a value represented by a number, for example, it can be a value in {0, 1, 2, ..., 15}. The non-numerical value can mean a value other than a number, or it can mean not representing a numerical value. The following describes the application of the numerical value of K1 and the non-numerical value of K1. For example, the PDSCH scheduled by the DCI format is sent by the base station device 3 in time slot n and is received by the terminal device 1. In the case where the value of K1 represented by the DCI format is a numerical value, the terminal device 1 can send (report) the HARQ-ACK information corresponding to the PDSCH via PUCCH or PUSCH in time slot n+K1. In the case where the value of K1 represented by the DCI format is a non-numerical value, the terminal device 1 can postpone reporting the HARQ-ACK information corresponding to the PDSCH. When a non-numeric value of K1 is indicated by a DCI format including scheduling information for a PDSCH, terminal device 1 may defer reporting of the HARQ-ACK information corresponding to the PDSCH. For example, terminal device 1 may store the HARQ-ACK information in a recording medium such as a memory, and instead of transmitting (reporting) the HARQ-ACK information via the next PUCCH or PUSCH, may trigger the transmission of the HARQ-ACK information based on at least a DCI format other than the aforementioned DCI format, thereby transmitting (reporting) the HARQ-ACK information.

[0275] The non-numeric value of K1 may be included in the sequence of the first upper layer parameters. The first upper layer parameter may be the upper layer parameter dl-DataToUL-ACK. The first upper layer parameter may be an upper layer parameter different from the upper layer parameter dl-DataToUL-ACK. The value of K1 may be a value indicated by the timing indication field from PDSCH to HARQ feedback included in DCI format 1_0 or DCI format 1_1 in the sequence of the first upper layer parameters. For example, the sequence of the first upper layer parameters is set to {0, 1, 2, 3, 4, 5, 15, non-numeric value}, and assuming that the number of bits of the timing indication field from PDSCH to HARQ feedback is 3, the code point "000" of the timing indication field from PDSCH to HARQ feedback may indicate that the value of K1 is 0, the code point "001" may indicate that the value of K1 is 1, and the code point "111" may indicate that the value of K1 is a non-numeric value. For example, the sequence of the first upper layer parameter is set to {non-numeric value, 0, 1, 2, 3, 4, 5, 15}. Assuming that the number of bits of the timing indication field from PDSCH to HARQ feedback is 3, the code point "000" of the timing indication field from PDSCH to HARQ feedback can indicate that the value of K1 is a non-numeric value, the code point "001" can indicate that the value of K1 is 0, and the code point "111" can indicate that the value of K1 is 15.

[0276] For example, the timing indication field for HARQ feedback from PDSCH included in DCI format 1_0 may not represent a non-numeric value. For example, a certain code point in the timing indication field for HARQ feedback from PDSCH included in DCI format 1_0 may represent a non-numeric value. For example, the timing indication field for HARQ feedback from PDSCH included in DCI format 1_1 may not represent a non-numeric value. For example, a certain code point in the timing indication field for HARQ feedback from PDSCH included in DCI format 1_1 may represent a non-numeric value.

[0277] Figure 7 This is a diagram showing an example of correspondence between a monitoring opportunity for a search space set and a monitoring opportunity for PDCCH according to one aspect of the present embodiment. Figure 7 In the example, the monitoring opportunity of the search area set in the primary cell is the OFDM symbol at the start of the time slot, and the monitoring opportunity of the search area set in the secondary cell is the OFDM symbol at the start of the time slot and the OFDM symbol in the middle of the time slot (for example, OFDM symbol #7). Figure 7In the example, the PDCCH monitoring opportunities correspond to the OFDM symbol at the start of slot #n and the middle OFDM symbol of slot #n, as well as the OFDM symbol at the start of slot #n+1 and the middle OFDM symbol of slot #n+1. That is, the PDCCH monitoring opportunities can be defined as the occasions when a monitoring opportunity for a search area set is set for at least one of one or more serving cells. Furthermore, the PDCCH monitoring opportunities correspond to the indices of the OFDM symbols for which the monitoring opportunity for a search area set is set for at least one of the one or more serving cells.

[0278] In a time slot, the monitoring opportunity of the search area set starting from a certain OFDM symbol index can correspond to the monitoring opportunity of the PDCCH starting from the certain OFDM symbol index. The monitoring opportunity of the PDCCH starting from a certain OFDM symbol index can respectively correspond to the monitoring opportunity of the search area set starting from a certain OFDM symbol index.

[0279] The terminal device 1 can determine a set of monitoring opportunities for PDCCH for HARQ-ACK information sent in the PUCCH of the time slot (slot#n) configured at least based on a part or all of the value of the timing K1 and the value of the time slot offset K0. The set of monitoring opportunities for PDCCH for HARQ-ACK information sent in the PUCCH of the time slot configured at index n is also referred to as a set of monitoring opportunities for PDCCH for time slot n (monitoring occasion for PDCCH for slot#n). Here, the set of monitoring opportunities for the PDCCH includes M monitoring opportunities for PDCCH. For example, the time slot offset K0 can be represented based on at least the value of the time domain resource allocation field included in the downlink DCI format. The time slot offset K0 represents the value of the number of time slots (time slot difference) from the time slot including the last OFDM symbol of the PDCCH configured with the DCI format to the OFDM symbol of the starting point of the PDSCH scheduled by the DCI format, and the DCI format includes the time domain resource allocation field representing the time slot offset K0.

[0280] Figure 8 : is a diagram showing an example of the configuration of a set of monitoring opportunities for the PDCCH in time slot n according to one aspect of the present embodiment. Figure 8 In the example, the monitoring opportunity of the search area set in the primary cell is the OFDM symbol at the start of the time slot, and the monitoring opportunity of the search area set in the secondary cell is the OFDM symbol at the start of the time slot and the OFDM symbol in the middle of the time slot (for example, OFDM symbol #7). Figure 8In FIG, the monitoring opportunities of the search area set in the primary cell are composed of 801 and 804, and the monitoring opportunities of the search area set in the secondary cell are composed of 802, 803, 805 and 806. Figure 8 In 802 , the inverted DCI format 811 is detected, in 804 , the DCI format 812 is detected, in 805 , the DCI format 813 is detected, and in 806 , the DCI format 814 is detected.

[0281] For example, in a case where HARQ-ACK information is transmitted in time slot n based on at least the timing K1 and the time slot offset K0 indicated by the DCI format 811, the terminal device 1 may determine the monitoring opportunity of the PDCCH defined at least based on the definition of 801 as the PDCCH monitoring opportunity for time slot n. For example, in a case where HARQ-ACK information is not transmitted in time slot n based on at least the timing K1 and the time slot offset K0 indicated by the DCI format 812, and HARQ-ACK information is not transmitted in time slot n based on at least the timing K1 and the time slot offset K0 indicated by the DCI format 813, the terminal device 1 may also not determine the monitoring opportunity of the PDCCH defined at least based on part or all of the definitions in 804 and 805 as the PDCCH monitoring opportunity for time slot n. For example, when HARQ-ACK information is sent in time slot n, indicated at least based on the timing K1 and time slot offset K0 represented by DCI format 814, the terminal device 1 may also determine the monitoring opportunity of the PDCCH defined at least based on 806 as the PDCCH monitoring opportunity for time slot n.

[0282] That is, when the DCI format detected in the monitoring opportunity of any search area set corresponding to the monitoring opportunity of a certain PDCCH triggers the sending of HARQ-ACK information in time slot n, the terminal device 1 can determine the monitoring opportunity of the PDCCH as the PDCCH monitoring opportunity for time slot n. In addition, when the DCI format detected in the monitoring opportunity of the search area set corresponding to the monitoring opportunity of a certain PDCCH does not trigger the sending of HARQ-ACK information in time slot n, the terminal device 1 may not determine the monitoring opportunity of the PDCCH as the PDCCH monitoring opportunity for time slot n. In addition, when no DCI format is detected in the monitoring opportunity of the search area set corresponding to the monitoring opportunity of a certain PDCCH, the terminal device 1 may not determine the monitoring opportunity of the PDCCH as the PDCCH monitoring opportunity for time slot n.

[0283] The PUCCH resource for sending HARQ-ACK information in time slot n can be determined based on at least the PUCCH resource indication field included in the last DCI format of one or more DCI formats detected in the set of monitoring opportunities for the PDCCH of time slot n. Here, the one or more DCI formats trigger the sending of HARQ-ACK information in time slot n respectively. The last DCI format can be a DCI format corresponding to the last index (largest index) in the DCI format detected in the set of monitoring opportunities for the PDCCH of time slot n. The index of the DCI format in the set of monitoring opportunities for the PDCCH of time slot n is given in ascending order relative to the index of the serving cell in which the DCI format is detected, and then, the index of the monitoring opportunity of the PDCCH in which the DCI format is detected is given in ascending order. The index of the monitoring opportunity of the PDCCH is given in ascending order on the time axis.

[0284] The second upper layer parameters may include upper layer parameters related to the generation and reporting of HARQ-ACK information. The terminal device 1 may provide the second upper layer parameters when applying NR-U.

[0285] The terminal device 1 may include, for the PDSCH group g associated with the scheduled PDSCH, a monitoring opportunity for the PDCCH corresponding to a DCI format that satisfies at least a part or all of conditions A1, A2, and A3, in the set of monitoring opportunities for the PDCCH for time slot n, when the second upper layer parameter is given. The base station device 3 may expect that, for the PDSCH group g, the HARQ-ACK information that is triggered to be sent corresponds to the monitoring opportunity of the PDCCH after the time point when the NFI bit corresponding to the PDSCH group g is last flipped. In order to avoid ambiguity in the identification of the transmission and reception status of the HARQ-ACK information between the terminal device 1 and the base station device 3, efficient transmission and reception of the HARQ-ACK information can be achieved by determining the set of monitoring opportunities for the PDCCH in the terminal device 1 based at least on the flipping status of the NFI bit indicated by the base station device 3.

[0286] Condition A1: HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is sent via the PUCCH in time slot n

[0287] Condition A2: PDSCH group g is indicated by the PGI field included in the DCI format

[0288] Condition A3: The DCI format is detected after the last occurrence of the event that flips the NFI bit corresponding to PDSCH group g

[0289] Here, the event of flipping the NFI bit indicates the event that the received NFI is compared with the stored NFI and flips.

[0290] Figure 9 : is a diagram showing an example of determining a set of monitoring opportunities for the PDCCH in time slot n according to one scheme in this embodiment.

[0291] Figure 10 : is a diagram showing an example of determining a set of monitoring opportunities for the PDCCH in time slot n according to one scheme in this embodiment.

[0292] exist Figure 9 and Figure 10 In the figure, the diagonal blocks represent PDCCH, the white blocks represent PDSCH, and the vertical blocks represent PUCCH. The DCI format for scheduling PDSCH911 is included in PDCCH901, the DCI format for scheduling PDSCH912 is included in PDCCH902, the DCI format for scheduling PDSCH913 is included in PDCCH903, the DCI format for scheduling PDSCH914 is included in PDCCH904, and the DCI format for scheduling PDSCH915 is included in PDCCH905. It is assumed that terminal device 1 gives the second parameter.

[0293] Here, Figure 9 and Figure 10 The arrows from each PDSCH toward any one of the PUCCHs shown in the indicates that the initial transmission of the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH corresponding to the starting point of the arrow is implemented in the PUCCH corresponding to the end point of the arrow. Here, the solid arrow indicates that the transmission of the PUCCH is triggered by the DCI format used for scheduling the PDSCH (timing K1 is a numerical value), and the dotted arrow indicates that the transmission of the PUCCH is not triggered by the DCI format used for scheduling the PDSCH (timing K1 is a non-numerical value). In Figure 9 In the figure, the absence of an arrow from the PDSCH to the PUCCH does not necessarily mean that the transmission of the HARQ-ACK bits corresponding to the transport blocks included in the PDSCH (initial transmission, etc.) is not triggered.

[0294] exist Figure 9, it is assumed that all PDSCHs are associated with PDSCH group g. The terminal device 1 sends HARQ-ACK information 931 including HARQ-ACK bits corresponding to the transport blocks included in PDSCH915 and PDSCH914 in time slot n via PUCCH921. The terminal device 1 can detect PDCCH901 and save the received NFI. When the terminal device 1 detects PDCCH902, the received NFI is indicated by the DCI format included in PDCCH902. The terminal device 1 can determine that the NFI bit is flipped by comparing the received NFI (value is 1) and the saved NFI (value is 0). After this judgment, the terminal device 1 can save the received NFI as the saved NFI. When the terminal device 1 detects PDCCH903, the received NFI is indicated by the DCI format included in PDCCH903. The terminal device 1 can determine that the NFI bit is flipped by comparing the received NFI (value is 0) and the saved NFI (value is 1). After making this judgment, the terminal device 1 can save the received NFI as the saved NFI. When the terminal device 1 detects PDCCH904, the received NFI is represented by the DCI format included in PDCCH904. The terminal device 1 can determine that the NFI bit is flipped by comparing the received NFI (value is 1) and the saved NFI (value is 0). After this judgment, the terminal device 1 can save the received NFI as the saved NFI. When the terminal device 1 detects PDCCH905, the received NFI is represented by the DCI format included in PDCCH905. The terminal device 1 can determine that the NFI bit is not flipped by comparing the received NFI (value is 1) and the saved NFI (value is 1). After this judgment, the terminal device 1 can save the received NFI as the saved NFI. The event of flipping the NFI bit at the time of detecting PDCCH904 is the last NFI bit flipping event until PUCCH921 is sent. For the generation of HARQ-ACK information 931, the terminal device 1 may include the monitoring opportunities of the PDCCH corresponding to the DCI format from the last NFI bit flip event to the detection of the last DCI format in the set of monitoring opportunities for the PDCCH for time slot n. For example, the terminal device 1 may include the monitoring opportunities of the PDCCH corresponding to PDCCH904 and PDCCH905 in the set of monitoring opportunities for the PDCCH for time slot n. The NFI bit flip event is an event that is judged to be an NFI bit flipped. The NFI bit flip event is triggered by the NFI bit included in the DCI format. When the NFI bit included in the DCI format (received NFI) is flipped compared with the saved NFI, the NFI bit flip event is triggered.

[0295] That is, the terminal device 1 can, when the second upper layer parameter is given, determine the set of monitoring opportunities for the PDCCH for time slot n for the PDSCH group g associated with the scheduled PDSCH, at least based on determining (specifying, identifying, recognizing, judging) the last NFI bit flip event. For example, the terminal device 1 can include the monitoring opportunity for the PDCCH after the timing of the last NFI bit flip event in the set of monitoring opportunities for the PDCCH in time slot n for the PDSCH group g. For example, the terminal device 1 can also include the monitoring opportunity for the PDCCH at the timing of the last NFI bit flip event in the set of monitoring opportunities for the PDCCH in time slot n for the PDSCH group g. For example, the terminal device 1 can also not include the monitoring opportunity for the PDCCH before the timing of the last NFI bit flip event in the set of monitoring opportunities for the PDCCH in time slot n for the PDSCH group g.

[0296] In addition, for example, the terminal device 1 may include, for PDSCH group g, the monitoring opportunity of the PDCCH after the monitoring opportunity of the PDCCH in the DCI format in which the last NFI bit flip event is detected, in the set of monitoring opportunities for the PDCCH of time slot n. For example, the terminal device 1 may include, for PDSCH group g, the monitoring opportunity of the PDCCH in the DCI format in which the last NFI bit flip event is detected, in the set of monitoring opportunities for the PDCCH of time slot n. For example, the terminal device 1 may not include, for PDSCH group g, the monitoring opportunity of the PDCCH before the monitoring opportunity of the PDCCH in the DCI format in which the last NFI bit flip event is detected, in the set of monitoring opportunities for the PDCCH of time slot n. Here, the DCI format of the last NFI bit flip event is the DCI format that triggers the occurrence of the last NFI bit flip event.

[0297] The terminal device 1 can save (store) the HARQ-ACK reporting status for the reception of PDSCH when the second upper layer parameter is given. The initial value of the HARQ-ACK reporting status can be pre-set to not match (N / A) or zero (null) or undefined (undefined). After receiving the PDSCH, the terminal device 1 can set the HARQ-ACK reporting status corresponding to the reception of the PDSCH to unreported. When the terminal device 1 triggers the transmission of the HARQ-ACK bit corresponding to the reception of the PDSCH in a certain uplink physical channel, the HARQ-ACK reporting status can be set to reported. For the reception of PDSCH with the HARQ-ACK reporting status as reported, the terminal device 1 can delete the HARQ-ACK reporting status (or set it to the initial value) when it detects that the NFI bit corresponding to the PDSCH group associated with the PDSCH is flipped compared with the NFI bit received previously. The terminal device 1 receives a PDSCH whose HARQ-ACK reporting status is not reported. When it is detected that the NFI bit corresponding to the PDSCH group associated with the PDSCH is flipped compared to the NFI bit received previously, the HARQ-ACK reporting status may not be deleted (or not set to the initial value). That is, the terminal device 1 can save the HARQ-ACK reporting status as not reported. The terminal device 1 may include the monitoring opportunity of the PDCCH corresponding to the DCI format that satisfies part or all of conditions A1, A2 and B1 in the set of monitoring opportunities for the PDCCH for time slot n for the PDSCH group g associated with the scheduled PDSCH. The base station device 3 can expect that the HARQ-ACK information triggered to be sent corresponds to the monitoring opportunity of the PDCCH whose NFI corresponding to the PDSCH group g is not flipped (in the terminal device 1, the HARQ-ACK reporting status is the initial value). In order to avoid ambiguity in the identification of the transmission and reception status of HARQ-ACK information between the terminal device 1 and the base station device 3, efficient transmission and reception of HARQ-ACK information can be achieved by determining a set of PDCCH monitoring opportunities in the terminal device 1 based at least on the flip state of the NFI bit indicated by the base station device 3.

[0298] Condition B1: The HARQ-ACK reporting status corresponding to the reception of the PDSCH scheduled by the DCI format is not reported or reported

[0299] The terminal device 1 may not include the monitoring opportunity of the PDCCH corresponding to at least a DCI format that does not satisfy at least any one of Condition A1, Condition A2 or Condition B1 in the set of monitoring opportunities for the PDCCH for time slot n for the PDSCH group g associated with the scheduled PDSCH.

[0300] exist Figure 9 , when the terminal device 1 detects PDCCH 901, it can set the HARQ-ACK reporting status corresponding to PDSCH 911 to unreported. After sending the HARQ-ACK information corresponding to PDSCH 911, the terminal device 1 can set the HARQ-ACK reporting status corresponding to PDSCH 911 to reported. When the terminal device 1 detects PDCCH 902, it can set the HARQ-ACK reporting status corresponding to PDSCH 911 to the initial value by flipping the NFI bit. When the terminal device 1 detects PDCCH 902, it can also set the HARQ-ACK reporting status corresponding to PDSCH 912 to unreported. When the terminal device 1 detects PDCCH 903, it can also set the HARQ-ACK reporting status corresponding to PDSCH 912 to the initial value by flipping the NFI bit. When the terminal device 1 detects PDCCH 903, it can also set the HARQ-ACK reporting status corresponding to PDSCH 913 to unreported. When the terminal device 1 detects PDCCH 904, it can also set the HARQ-ACK reporting status corresponding to PDSCH 913 to the initial value by flipping the NFI bit. When the terminal device 1 detects PDCCH 904, it can also set the HARQ-ACK reporting status corresponding to PDSCH 914 to unreported. When the terminal device 1 detects PDCCH 905, it can also save the HARQ-ACK reporting status corresponding to PDSCH 914 as reported because the NFI bit is not flipped. When the terminal device 1 detects PDCCH 905, it can also set the HARQ-ACK reporting status corresponding to PDSCH 915 to unreported. Before sending PUCCH 921, the HARQ-ACK reporting status corresponding to PDSCH 911, PDSCH 912 and PDSCH 913 is the initial value, the HARQ-ACK reporting status corresponding to PDSCH 914 is reported, and the HARQ-ACK reporting status corresponding to PDSCH 915 is unreported. For the generation of HARQ-ACK information 931, the terminal device 1 may include the monitoring opportunity of the PDCCH corresponding to the PDSCH whose HARQ-ACK reporting status is unreported or reported in the set of monitoring opportunities for the PDCCH for time slot n. For example, the terminal device 1 may include the monitoring opportunity of the PDCCH corresponding to PDSCH914 and PDSCH915 in the set of monitoring opportunities for the PDCCH for time slot n. For example, the terminal device 1 may also not include the monitoring opportunity of the PDCCH corresponding to PDSCH911, PDSCH912, and PDSCH913 in the set of monitoring opportunities for the PDCCH for time slot n.

[0301] The terminal device 1 may, when the second upper layer parameter is given, delete the set of saved PDCCH monitoring opportunities for the PDSCH group g associated with the scheduled PDSCH when it is detected that the NFI bit is flipped compared to the previously received NFI bit. That is, the set of saved PDCCH monitoring opportunities may not be saved. The set of monitoring opportunities for the PDCCH for time slot n may be composed of one or more sets of monitoring opportunities for PDCCHs. In the case where there is a set of saved PDCCH monitoring opportunities in the terminal device 1 and the HARQ-ACK information corresponding to the set of saved PDCCH monitoring opportunities is triggered to be sent via PUCCH in time slot n, the set of saved PDCCH monitoring opportunities may be defined as the set of monitoring opportunities for the first PDCCH. Here, the set of monitoring opportunities for the first PDCCH includes Mm PDCCH monitoring opportunities. For a DCI format that schedules the reception of a PDSCH and indicates a non-numeric value of K1, when the HARQ-ACK information corresponding to the PDSCH is triggered to be sent via PUCCH in batch n, the terminal device 1 may include the monitoring opportunity of the PDCCH corresponding to the DCI format in the set of monitoring opportunities for the second PDCCH. Here, the set of monitoring opportunities for the second PDCCH includes L monitoring opportunities for PDCCHs. For a DCI format that schedules the reception of a PDSCH and indicates a numeric value of K1, when the HARQ-ACK information corresponding to the PDSCH is triggered to be sent via PUCCH in time slot n, the terminal device 1 may include the monitoring opportunity of the PDCCH corresponding to the DCI format in the set of monitoring opportunities for the third PDCCH. Here, the set of monitoring opportunities for the third PDCCH includes Mn monitoring opportunities for PDCCHs. The set of monitoring opportunities for the PDCCH of time slot n may include a set of monitoring opportunities for the first PDCCH (if present), a set of monitoring opportunities for the second PDCCH (if present), and a set of monitoring opportunities for the third PDCCH (if present). Here, the set of monitoring opportunities for the PDCCH of time slot n includes M=Mm+L+Mn PDCCH monitoring opportunities. After determining the set of monitoring opportunities for the PDCCH of time slot n, the terminal device 1 can save the set of monitoring opportunities for the PDCCH of time slot n. The base station device 3 can expect that for PDSCH group g, the HARQ-ACK information triggered to be sent corresponds to the monitoring opportunity of the PDCCH whose NFI corresponding to the PDSCH group g is not flipped.In order to avoid ambiguity in the identification of the transmission and reception status of HARQ-ACK information between the terminal device 1 and the base station device 3, efficient transmission and reception of HARQ-ACK information can be achieved by determining a set of PDCCH monitoring opportunities in the terminal device 1 based at least on the flip state of the NFI bit indicated by the base station device 3.

[0302] exist Figure 10, PDSCH1011, PDSCH1014, and PDSCH1015 are associated with PDSCH group g, and PDSCH1012 and PDSCH1014 are associated with PDSCH group h which is different from PDSCH group g. Below, for PDSCH group g, the determination of the set of monitoring opportunities for PDCCH and the generation of HARQ-ACK information are described. Terminal device 1 receives PDCCH1001 including the DCI format for scheduling PDSCH1011, determines the set of monitoring opportunities for PDCCH for time slot j, and sends HARQ-ACK information 1031 including the HARQ-ACK bit corresponding to PDSCH1011 via PUCCH1021 in time slot j. Terminal device 1 can save the set of monitoring opportunities for PDCCH for time slot j from the time when the set of monitoring opportunities for PDCCH for time slot j is determined until the NFI bit corresponding to PDSCH group g is flipped. Here, it is assumed that PUCCH 1021 is not detected in base station device 3, and HARQ-ACK information 1031 is retransmitted via PUCCH 1022. Terminal device 1 receives PDCCH 1004 in a DCI format including scheduling PDSCH 1014, and delays the transmission of the HARQ-ACK bit corresponding to PDSCH 1014 by using the value of K1 representing a non-numeric value. That is, terminal device 1 does not transmit the HARQ-ACK bit corresponding to PDSCH 1014 via PUCCH 1022 in time slot k, but triggers the transmission via PUCCH 1023 in time slot n. Terminal device 1 receives PDCCH 1005 in a DCI format including scheduling PDSCH 1015, determines a set of monitoring opportunities for the PDCCH in time slot n, and transmits HARQ-ACK information 1033 including the HARQ-ACK bit corresponding to PDSCH 1015 via PUCCH 1023 in time slot n. Here, in the case where PUCCH1022 is not detected (the NFI bit is not flipped), the terminal device 1 may include a set of monitoring opportunities for the first PDCCH, a set of monitoring opportunities for the second PDCCH, and a set of monitoring opportunities for the third PDCCH in the set of monitoring opportunities for the PDCCH for time slot n. The set of monitoring opportunities for the first PDCCH may be a set of monitoring opportunities for the saved PDCCH. For example, the set of monitoring opportunities for the first PDCCH may include the monitoring opportunities for the PDCCH corresponding to PDSCH1011. The set of monitoring opportunities for the second PDCCH may be a set of monitoring opportunities for the PDCCH corresponding to the DCI format representing the value of K1 that is not a numerical value. For example, the set of monitoring opportunities for the second PDCCH may include the monitoring opportunities for the PDCCH corresponding to PDSCH1014. The set of monitoring opportunities for the third PDCCH may be a set of monitoring opportunities for the PDCCH corresponding to the DCI format representing the value of K1 that is a numerical value.For example, the set of monitoring opportunities for the third PDCCH may include the monitoring opportunity of the PDCCH corresponding to PDSCH 1015. Here, in the case where PUCCH 1022 (NFI bit is flipped) is detected, the terminal device 1 may include the set of monitoring opportunities for the second PDCCH and the set of monitoring opportunities for the third PDCCH in the set of monitoring opportunities for the PDCCH for time slot n. For example, in the case where PUCCH 1022 (NFI bit is flipped) is detected, the terminal device 1 may also not include the set of monitoring opportunities for the first PDCCH in the set of monitoring opportunities for the PDCCH for time slot n.

[0303] The terminal device 1 may, when the second upper layer parameter is given, delete the set of saved PDCCH monitoring opportunities for the PDSCH group g associated with the scheduled PDSCH when it is detected that the NFI bit is flipped compared to the previously received NFI bit. That is, the set of saved PDCCH monitoring opportunities may not be saved. For the DCI format of the reception of the scheduled PDSCH and representing the value of K1 which is a non-numeric value, the terminal device 1 may append the monitoring opportunity of the PDCCH corresponding to the DCI format to the set of saved PDCCH monitoring opportunities for saving when the HARQ-ACK information corresponding to the PDSCH is sent via PUCCH in batch n. Here, the set of saved PDCCH monitoring opportunities includes Mm PDCCH monitoring opportunities. The set of PDCCH monitoring opportunities for time slot n may be composed of a set of one or more PDCCH monitoring opportunities. The set of monitoring opportunities for the PDCCH of time slot n may include a set of monitoring opportunities for the saved PDCCH (if any) and a set of monitoring opportunities for the third PDCCH (if any). Here, the set of monitoring opportunities for the PDCCH of time slot n includes M=Mm+Mn monitoring opportunities for PDCCHs. After determining the set of monitoring opportunities for the PDCCH of time slot n, the terminal device 1 may save the set of monitoring opportunities for the PDCCH of time slot n. The base station device 3 may expect that for PDSCH group g, the HARQ-ACK information triggered for transmission corresponds to the monitoring opportunity of the PDCCH whose NFI corresponding to the PDSCH group g is not flipped. In order to avoid ambiguity in the identification of the transmission and reception status of the HARQ-ACK information between the terminal device 1 and the base station device 3, efficient transmission and reception of the HARQ-ACK information can be achieved by determining the set of monitoring opportunities for the PDCCH in the terminal device 1 based at least on the flipping state of the NFI bit indicated by the base station device 3.

[0304] exist Figure 10, PDSCH1011, PDSCH1014, and PDSCH1015 are associated with PDSCH group g, and PDSCH1012 and PDSCH1014 are associated with PDSCH group h which is different from PDSCH group g. Below, for PDSCH group g, the determination of the set of monitoring opportunities for PDCCH and the generation of HARQ-ACK information are described. Terminal device 1 receives PDCCH1001 including the DCI format for scheduling PDSCH1011, determines the set of monitoring opportunities for PDCCH for time slot j, and sends HARQ-ACK information 1031 including the HARQ-ACK bit corresponding to PDSCH1011 via PUCCH1021 in time slot j. Terminal device 1 can save the set of monitoring opportunities for PDCCH for time slot j from the time when the set of monitoring opportunities for PDCCH for time slot j is determined until the NFI bit corresponding to PDSCH group g is flipped. Here, it is assumed that PUCCH 1021 is not detected in base station device 3, and HARQ-ACK information 1031 is retransmitted via PUCCH 1022. Terminal device 1 receives PDCCH 1004 including the DCI format for scheduling PDSCH 1014, and delays the transmission of the HARQ-ACK bits corresponding to PDSCH 1014 by using the value of K1 representing a non-numeric value. That is, terminal device 1 does not transmit the HARQ-ACK bits corresponding to PDSCH 1014 via PUCCH 1022 in time slot k, but triggers the transmission via PUCCH 1023 in time slot n. Terminal device 1 can store the monitoring opportunity of the PDCCH corresponding to PDSCH 1014 by adding it to the set of stored PDCCH monitoring opportunities. Terminal device 1 receives PDCCH 1005 including a DCI format for scheduling PDSCH 1015, determines a set of monitoring opportunities for PDCCH for time slot n, and sends HARQ-ACK information 1033 including a HARQ-ACK bit corresponding to PDSCH 1015 via PUCCH 1023 in time slot n. Terminal device 1 may include the set of monitoring opportunities for the saved PDCCH and the set of monitoring opportunities for the third PDCCH in the set of monitoring opportunities for PDCCH for time slot n. The set of monitoring opportunities for the third PDCCH may be a set of monitoring opportunities for PDCCH corresponding to the DCI format of the value of K1 representing a numerical value. For example, the set of monitoring opportunities for the third PDCCH may include the monitoring opportunities for the PDCCH corresponding to PDSCH 1015. Here, in the case where PUCCH 1022 is not detected (the NFI bit is not flipped), the set of monitoring opportunities for the saved PDCCH may include the monitoring opportunities for PDCCHs corresponding to PDSCH 1101 and PDSCH 1014.Here, when PUCCH1022 is detected (the NFI bit is flipped), the set of saved PDCCH monitoring opportunities may not include the monitoring opportunities of the PDCCH corresponding to PDSCH1011 (the monitoring opportunities of the PDCCH corresponding to PDSCH1011 are deleted), but include the monitoring opportunities of the PDCCH corresponding to PDSCH1014.

[0305] The DAI field is a general term for the first DAI field and the second DAI field. Counter DAI represents the cumulative number of PDCCHs detected for a certain PDCCH monitoring opportunity of a certain service cell in the monitoring opportunities of M PDCCHs (a set of monitoring opportunities for PDCCHs for time slot n) up to the monitoring opportunity of the PDCCH of the service cell (or it may be a value at least associated with the cumulative number). Count DAI may also be referred to as C-DAI. The terminal device 1 may represent the C-DAI corresponding to the PDSCH through the DAI field included in the DCI format for scheduling the PDSCH. The C-DAI corresponding to the PDSCH may also be represented by the first DAI field included in the DCI format for scheduling the PDSCH. The C-DAI corresponding to the PDSCH may also be represented by a part or all of the bits of the second DAI field included in the DCI format for scheduling the PDSCH.

[0306] Figure 11 、 Figure 12 as well as Figure 13 This is a diagram showing an example of a process for constructing a HARQ-ACK codebook (codebook for HARQ-ACK information) according to one aspect of this embodiment. Figure 11 、 Figure 12 as well as Figure 13 of <ax>Also called step AX. Figure 11 、 Figure 12 as well as Figure 13 Figure 11 、 Figure 12 as well as Figure 13 In , "A=B" can also mean setting A to B. Figure 11 、 Figure 12 as well as Figure 13 In the example, "A=B" can also be input to B. The terminal device 1 is based on Figure 11 、 Figure 12 as well as Figure 13 The HARQ-ACK codebook is generated by the process described in the above. When the second upper layer parameters are given, the terminal device 1 generates the HARQ-ACK codebook for each PDSCH group based on Figure 11 、 Figure 12 as well as Figure 13 The HARQ-ACK codebook is generated by the process described in

[15] . When multiple HARQ-ACK codebooks are generated, the multiple HARQ-ACK codebooks can be concatenated.

[0307] The HARQ-ACK codebook may be provided based on at least a portion or all of steps A1 to A58.

[0308] The HARQ-ACK codebook corresponding to a certain PDSCH group may be given based on at least part or all of steps A1 to A46. The HARQ-ACK codebook corresponding to a certain PDSCH group may also be given based on one or more HARQ-ACK bits corresponding to any one of one or more transport blocks included in any one of one or more PDSCHs included in the certain PDSCH group.

[0309] The HARQ-ACK codebook may also be given based on at least a set of PDCCH monitoring opportunities, a value of the UL DAI field, and / or a portion or all of the DAI field.

[0310] The HARQ-ACK codebook may also be given based on at least a set of PDCCH monitoring opportunities, a portion or all of the UL DAI, the counting DAI, and / or the total DAI.

[0311] In step A1, the serving cell index c is set to 0. The serving cell index may be given for each serving cell based on at least a parameter of an upper layer.

[0312] In step A2, m is set to 0. m may represent an index of a monitoring opportunity of a PDCCH including DCI format 1_0 or DCI format 1_1.

[0313] In step A3, j may be set to 0.

[0314] In step A4, V can be set to 0. temp Set to 0.

[0315] In step A5, V can be set to 0. temp2 Set to 0.

[0316] In step A6, it can be set to Representing the empty set.

[0317] In step A7, N can be set to the number of serving cells. The number of serving cells can be the number of serving cells set in the terminal device 1. DL cells Set to the number of serving cells. The number of serving cells can be the number of serving cells set in the terminal device 1.

[0318] In step A8, M can be set to the number of monitoring opportunities for PDCCH.

[0319] In step A9, evaluate the first evaluation formula m < M. When this first evaluation formula is true, step A10 can be executed. When this first evaluation formula is false, step A34 can be executed.

[0320] In step A10, c can be set to 0.

[0321] In step A11, evaluate the second evaluation formula c < N DL cells . When this second evaluation formula is true, step A11 can be executed. When this second evaluation formula is false, step A33 can be executed.

[0322] In step A12, when the monitoring opportunity m of PDCCH in serving cell c is before the activation of the downlink BWP switch, step A13 can be executed. In step A12, when there is a switch of the activated uplink BWP in the PCell and the activation of the downlink BWP switch is not triggered by DCI format 1_1, step A13 can be executed. When neither of the above two conditions is satisfied, step A14 can be executed.

[0323] In step A13, c can be set to c + 1.

[0324] In step A14, step A15 can be executed.

[0325] In step A$, when the second upper layer parameter is not given and condition C1 or condition C2 is satisfied, step A16 can be executed. In step A15, when the second upper layer parameter is given and condition C3 or condition C4 is satisfied, step A16 can be executed.

[0326] Condition C1: There is a PDSCH associated with the PDCCH in monitoring opportunity m of the PDCCH of serving cell c

[0327] Condition C2: There is a PDCCH indicating the release of the SPS PDSCH of serving cell c

[0328] Condition C3: There is a PDSCH associated with PDSCH group g and associated with the PDCCH in monitoring opportunity m of the PDCCH of serving cell c

[0329] Condition C4: There is a PDCCH indicating the release of the SPS PDSCH associated with PDSCH group g in serving cell c.

[0330] In step A16, the third evaluation formula V is evaluated. DL C-DAI，c，m ≤V temp If the third evaluation formula is true, step A17 may be executed. If the third evaluation formula is false, step A18 may be executed.

[0331] V DL C-DAI，c，m It is the value of the counting DAI (Downlink Assignment Index) given based on at least the PDCCH detected in the monitoring opportunity m of the PDCCH in the serving cell c. In determining the counting DAI, the index of the PDCCH detected in the M monitoring opportunities can first give the serving cell index c, and secondly give the monitoring opportunity m of the PDCCH. That is, the index of the PDCCH detected in the monitoring opportunities of the M PDCCHs can first be mapped in the order of the serving cell index c, and then can be mapped in the order of the monitoring opportunity m of the PDCCH (serving cell index first, PDCCH monitoring occasion second mapping). The counting DAI can be called C-DAI (CounterDownlink Assignment Index).

[0332] In step A17, j may be set to j+1.

[0333] Step A18 may be a step indicating completion of the action based on the third evaluation formula in step A12 .

[0334] In step A19, V temp Set to V DL C-DAI，c，m .

[0335] In step A20, the fourth evaluation formula may be evaluated. If the fourth evaluation formula is true, step A21 may be executed. If the fourth evaluation formula is false, step A22 may be executed.

[0336] V DL T-DAI，m The total DAI value may be based on at least the PDCCH detected in PDCCH monitoring opportunity m in serving cell c. The total DAI may represent the cumulative number of PDCCHs detected in M PDCCH monitoring opportunities up to PDCCH monitoring opportunity m (or may be a value at least associated with the cumulative number). The total DAI may be referred to as T-DAI (Total Downlink Assignment Index).

[0337] At least when the HARQ-ACK codebook is multiplexed to the PUSCH scheduled based on at least DCI format 0_1, and when m=M-1, V DL T-DAI，m Can be replaced by V UL DAI .

[0338] In step A21, V temp2 Set to V DL C-DAI，c，m .

[0339] In step A22, step A23 may be performed.

[0340] In step A23, V temp2 Set to V DL T-DAI，m .

[0341] Step A24 may be a step indicating completion of the action based on the fourth evaluation formula in step A20 .

[0342] In step A25, if 1) the harq-ACK-SpatialBundlingPUCCH is not provided, 2) the PDCCH monitoring opportunity m is a monitoring opportunity for a PDCCH including DCI format 1_0 or DCI format 1_1, and 3) maxNrofCodeWordsScheduledByDCI is set for reception of two transport blocks in at least one BWP in at least one serving cell, step A26 may be performed. maxNrofCodeWordsScheduledByDCI may be information indicating whether transmission of two transport blocks in the PDSCH is supported.

[0343] In step A26, o ACK a (8j+2(V DL C-DAI，c，m -1)) is set to the value of the HARQ-ACK bit corresponding to the first transport block of serving cell c. A HARQ-ACK bit value of 1 may indicate an ACK. A HARQ-ACK bit value of 0 may indicate a NACK. The first transport block of serving cell c may be the first transport block included in a PDSCH scheduled by a DCI format included in a PDCCH detected in a monitoring opportunity m of a PDCCH in serving cell c.

[0344] In step A27, o ACK a (8j+2(V DL C-DAI，c，m -1)+1) is set to the value of the HARQ-ACK bit corresponding to the second transport block of the serving cell c. The second transport block of the serving cell c may be the second transport block included in the PDSCH scheduled by the DCI format included in the PDCCH detected in the monitoring opportunity m of the PDCCH in the serving cell c.

[0345] The PDSCH includes the first transport block, and the PDSCH does not include the second transport block may mean that the PDSCH includes one transport block.

[0346] In step A28, V s Set to V s ∪{8j+2(V DL C-DAI，c，m -1), 8j+2(V DL C-DAI，c，m -1)+1}. Y∪Z may represent the union of set Y and set Z. {*} may be a set constructed to include *.

[0347] In step A29, step A30 may be performed when 1) harq-ACK-SpatialBundlingPUCCH is provided, 2) the monitoring opportunity m of the PDCCH is a monitoring opportunity of the PDCCH including DCI format 1_1, and 3) maxNrofCodeWordsScheduledByDCI is set for reception of two transport blocks in at least one BWP in at least one serving cell.

[0348] In step A30, o ACK a (4j+V DL C-DAI，c，m -1) is set to a value given by a binary AND operation of the first HARQ-ACK bit corresponding to the first transport block of the serving cell c and the second HARQ-ACK bit corresponding to the second transport block of the serving cell c.

[0349] In step A31, V s Set to V s ∪{4j+V DL C-DAI，c，m -1}.

[0350] In step A32, when the conditions of step A25 and step A29 are satisfied, step A33 may be executed.

[0351] In step A33, o ACK a (4j+V DL C-DAI，c，m -1) is set to the value of the first HARQ-ACK bit corresponding to the first transport block of serving cell c. In step A33, o ACK a (4j+V DL C-DAI，c，m -1) is set to the value of the HARQ-ACK bit of serving cell c.

[0352] In step A34, V s Set to V s ∪{4j+V DL C-DAI，c，m -1}.

[0353] Step A35 may be a step indicating completion of the action of step A25.

[0354] Step A36 may be a step indicating completion of the action of step A15.

[0355] In step A37, c may be set to c+1.

[0356] Step A38 may be a step indicating completion of the action of step A12.

[0357] In step A39, step A11 may be performed.

[0358] In step A40 , m may be set to m+1.

[0359] In step A41 , step A10 may be performed.

[0360] In step A42, the fifth evaluation formula V may be executed. temp2 <V temp If the fifth evaluation formula is true, step A43 may be executed. If the fifth evaluation formula is false, step A44 may be executed.

[0361] In step A43, j may be set to j+1.

[0362] Step A44 may be a step indicating completion of step A42.

[0363] In step A45, if 1) harq-ACK-SpatialBundlingPUCCH is not provided and 2) at least one BWP in at least one serving cell sets maxNrofCodeWordsScheduledByDCI, step A46 may be executed. If neither of the above two conditions is met, step A47 may be executed.

[0364] In step A46, O ACK Set to 2(4j+V temp2 ).

[0365] In step A47, step A48 may be performed.

[0366] In step A48, O ACK Set to 4j+V temp2 .

[0367] Step A49 may be a step indicating completion of the action of step A12.

[0368] In step A50, for the N ∈{0,1……O ACK -1}￥V s i N , you can ACK a (i N ) is set to the value of NACK. It can represent the set obtained by subtracting the elements included in the set W from the set V. It can also be the difference between V and W.

[0369] In step A51, c may be set to 0.

[0370] In step A52, the seventh evaluation formula c is evaluated. <N DL cells If the seventh evaluation formula is true, step A54 may be executed. If the second evaluation formula is false, step A58 may be executed.

[0371] In step A54 , when the system is configured to receive a PDSCH (SPS PDSCH) scheduled by a grant set in one or more time slots among the monitoring opportunities of the M PDCCHs and transmission of the SPS PDSCH is activated, step A54 may be performed.

[0372] In step A54, O ACK Set to O ACK +1. In step A44, O ACK Set to O ACK +N SPS . N SPS The number of SPS PDSCHs received in the monitoring opportunity 1001 of M PDCCHs may be set.

[0373] In step A55, o ACK a (o ACKa -1) is set to the value of the HARQ-ACK bit corresponding to the transport block included in the SPS PDSCH. In step A45, o ACK a (o ACK a -i SPS ) is set to the value of the HARQ-ACK bit corresponding to the transport block included in the SPS PDSCH. SPS Can satisfy i SPS ∈{0, 1..., N SPS -1} condition. In step A45, it is also possible to ACK a (o ACK a -1) is set to a value given by the logical product of HARQ-ACK bits corresponding to transport blocks respectively included in one or more SPS PDSCHs received in the monitoring opportunity of M PDCCHs.

[0374] Step A56 may be a step indicating completion of the action of step A53.

[0375] In step A57, c may be set to c+1.

[0376] Step A58 may be a step indicating completion of the action of step A52.

[0377] The first to seventh evaluation formulas are also referred to as evaluation formulas. A true evaluation formula means that the evaluation formula is satisfied. A false evaluation formula means that the evaluation formula is not true. A false evaluation formula also means that the evaluation formula is not satisfied.

[0378] One solution of the present invention can achieve efficient communication. One solution of the present invention can achieve efficient transmission and reception of HARQ-ACK information. One solution of the present invention can achieve efficient transmission and reception of HARQ-ACK codebook. In order to avoid ambiguity in the identification of the transmission and reception status of HARQ-ACK information between the terminal device 1 and the base station device 3, efficient transmission and reception of HARQ-ACK information can be achieved by determining a set of monitoring opportunities of PDCCH in the terminal device 1 based at least on the flipping state of the NFI bit indicated by the base station device 3. For example, in a case where HARQ-ACK information is not detected in the base station device 3, the base station device 3 does not flip the NFI bit corresponding to the HARQ-ACK information that is not detected even if triggered, and the terminal device 1 sends the HARQ-ACK information through the NFI bit that is not flipped, thereby ensuring the consistency of the transmission and reception of the HARQ-ACK information. For example, when HARQ-ACK information is detected by base station apparatus 3, base station apparatus 3 flips the NFI bit corresponding to the triggered and detected HARQ-ACK information, and terminal apparatus 1 does not transmit HARQ-ACK information using the flipped NFI bit. This ensures the consistency of HARQ-ACK information transmission and reception. By ensuring the consistency of HARQ-ACK information transmission and reception between terminal apparatus 1 and base station apparatus 3, retransmission or mistransmission of remaining HARQ-ACK information can be avoided, thereby improving resource utilization efficiency.

[0379] Hereinafter, various device aspects of one aspect of this embodiment will be described.

[0380] (1) To achieve the above-mentioned object, the present invention adopts the following scheme. That is, the first scheme of the present invention is a terminal device comprising: a receiving unit that receives a DCI format for scheduling a PDSCH; and a transmitting unit that transmits HARQ-ACK information in time slot n, wherein the terminal device includes: when upper layer parameters are given, for PDSCH group g, including a monitoring opportunity for a PDCCH corresponding to a DCI format that satisfies a condition in a set of monitoring opportunities for the PDCCH used in time slot n, and generating the HARQ-ACK information based on at least the set of monitoring opportunities for the PDCCH used in time slot n, wherein the condition is as follows: condition 1 is that the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is transmitted in batch n; and condition 2 is that the PDSCH group g is indicated by a PGI field included in the DCI format.

[0381] (2) A second solution of the present invention is a terminal device, comprising: the DCI format is detected after a time point when an NFI bit corresponding to the PDSCH group g is last flipped.

[0382] (3) The third scheme of the present invention is a terminal device, which includes: saving the HARQ-ACK reporting status for PDSCH, pre-setting the initial value of the HARQ-ACK reporting status to non-matching (N / A), after receiving the PDSCH, setting the HARQ-ACK reporting status corresponding to the PDSCH to unreported, and when the sending of the HARQ-ACK bit corresponding to the PDSCH is triggered, setting the HARQ-ACK reporting status to reported, for the PDSCH with the HARQ-ACK reporting status as reported, when it is detected that the NFI bit corresponding to the PDSCH is flipped compared with the previously received NFI bit, setting the HARQ-ACK reporting status to the initial value, and the HARQ-ACK reporting status corresponding to the PDSCH scheduled by the DCI format is unreported or reported.

[0383] (4) The fourth scheme of the present invention is a terminal device comprising: a receiving unit for receiving a DCI format for scheduling a PDSCH; and a transmitting unit for transmitting HARQ-ACK information in a time slot n, wherein the terminal device comprises: when an upper layer parameter is given, for a PDSCH group g, when it is detected that the NFI bit is flipped compared with the NFI bit received previously, deleting a set of monitoring opportunities of a stored PDCCH, setting the set of monitoring opportunities of the stored PDCCH to a set of monitoring opportunities of a first PDCCH, and the set of monitoring opportunities of a second PDCCH including K representing a non-numeric value. 1, the set of monitoring opportunities for the third PDCCH includes the monitoring opportunities for the PDCCH corresponding to the DCI format with the value of K1 representing the numerical value, the set of monitoring opportunities for the PDCCH for time slot n includes the set of monitoring opportunities for the first PDCCH, the set of monitoring opportunities for the second PDCCH and the set of monitoring opportunities for the third PDCCH, the determined set of monitoring opportunities for the PDCCH for time slot n is saved, and the HARQ-ACK information is generated at least based on the set of monitoring opportunities for the PDCCH for time slot n.

[0384] (5) The fifth scheme of the present invention is a terminal device comprising: a receiving unit for receiving a DCI format for scheduling a PDSCH; and a transmitting unit for transmitting HARQ-ACK information in time slot n, wherein the terminal device includes: when upper layer parameters are given, for PDSCH group g, when it is detected that the NFI bit is flipped compared with the NFI bit received previously, deleting the set of monitoring opportunities of the saved PDCCH, appending the monitoring opportunities of the PDCCH corresponding to the DCI format of the value of K1 representing a non-numeric value to the set of monitoring opportunities of the saved PDCCH to save it, the set of monitoring opportunities of the third PDCCH includes the monitoring opportunities of the PDCCH corresponding to the DCI format of the value of K1 representing a numeric value, the set of monitoring opportunities of the PDCCH for time slot n includes the set of monitoring opportunities of the saved PDCCH and the set of monitoring opportunities of the third PDCCH, saving the set of monitoring opportunities of the PDCCH determined for the time slot n, and generating the HARQ-ACK information at least based on the set of monitoring opportunities of the PDCCH for the time slot n.

[0385] (6) The sixth scheme of the present invention is a base station device, which comprises: a sending unit, which sends a DCI format for scheduling PDSCH; and a receiving unit, which receives HARQ-ACK information in time slot n, and the base station device includes: when upper layer parameters are given, for PDSCH group g, the monitoring opportunity of the PDCCH corresponding to the DCI format that meets the conditions is included in the set of monitoring opportunities of the PDCCH for time slot n, and receives the HARQ-ACK information generated at least based on the set of monitoring opportunities of the PDCCH for time slot n, and the conditions are as follows: Condition 1 is that the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI format is triggered when it is sent in batch n; Condition 2 is that the PDSCH group g is represented by the PGI field included in the DCI format.

[0386] (7) A seventh aspect of the present invention is a base station apparatus, comprising: the DCI format is detected after a time point at which an NFI bit corresponding to the PDSCH group g is last flipped.

[0387] (8) The eighth scheme of the present invention is a base station device, which includes: saving a HARQ-ACK reporting status for a PDSCH, an initial value of the HARQ-ACK reporting status being pre-set to not matching (N / A), after receiving the PDSCH, the HARQ-ACK reporting status corresponding to the PDSCH is set to not reported, when the sending of the HARQ-ACK bit corresponding to the PDSCH is triggered, the HARQ-ACK reporting status is set to reported, for the PDSCH whose HARQ-ACK reporting status is reported, when it is detected that the NFI bit corresponding to the PDSCH is flipped compared to the NFI bit received previously, the HARQ-ACK reporting status is set to the initial value, and the HARQ-ACK reporting status corresponding to the PDSCH scheduled by the DCI format is not reported or reported.

[0388] (9) The ninth scheme of the present invention is a base station device comprising: a transmitting unit for transmitting a DCI format for scheduling a PDSCH; and a receiving unit for receiving HARQ-ACK information in a time slot n, wherein the base station device includes: when an upper layer parameter is given, for a PDSCH group g, when it is detected that the NFI bit is flipped compared with the NFI bit received previously, a set of monitoring opportunities for the saved PDCCH is deleted, the set of monitoring opportunities for the first PDCCH is the set of monitoring opportunities for the saved PDCCH, and the set of monitoring opportunities for the second PDCCH includes K1 representing a non-numeric value. The set of monitoring opportunities for the PDCCH corresponding to the DCI format of the value K1, the set of monitoring opportunities for the third PDCCH includes the monitoring opportunities for the PDCCH corresponding to the DCI format of the value representing the numerical value K1, the set of monitoring opportunities for the PDCCH for time slot n includes the set of monitoring opportunities for the first PDCCH, the set of monitoring opportunities for the second PDCCH and the set of monitoring opportunities for the third PDCCH, the determined set of monitoring opportunities for the PDCCH for the time slot n is saved, and the HARQ-ACK information generated at least based on the set of monitoring opportunities for the PDCCH for the time slot n is received.

[0389] (10) The tenth scheme of the present invention is a base station device comprising: a transmitting unit that transmits a DCI format for scheduling a PDSCH; and a receiving unit that receives HARQ-ACK information in a time slot n, wherein the base station device includes: when an upper layer parameter is given, for a PDSCH group g, when it is detected that the NFI bit is flipped compared to the NFI bit received previously, the set of monitoring opportunities of the PDCCH that has been saved is deleted, and the monitoring opportunities of the PDCCH corresponding to the DCI format representing the value of K1 that is not a numerical value are added to the PDCCH that has been saved. The set of monitoring opportunities for the PDCCH is saved, the set of monitoring opportunities for the third PDCCH includes the monitoring opportunities for the PDCCH corresponding to the DCI format of the value of K1 representing the numerical value, the set of monitoring opportunities for the PDCCH for time slot n includes the set of saved monitoring opportunities for the PDCCH and the set of monitoring opportunities for the third PDCCH, the determined set of monitoring opportunities for the PDCCH for time slot n is saved, and the HARQ-ACK information generated at least based on the set of monitoring opportunities for the PDCCH for time slot n is received.

[0390] According to the above-described embodiment of one aspect of the present invention, it is possible to appropriately implement the transmission and reception of HARQ-ACK information between the terminal apparatus 1 and the base station apparatus 3. By appropriately controlling the HARQ-ACK information not detected in the base station apparatus 3 to be retransmitted by the terminal apparatus 1, and appropriately controlling the HARQ-ACK information detected in the base station apparatus 3 to not be retransmitted by the terminal apparatus 1, one aspect of the present invention can achieve efficient communication.

[0391] The programs running in the base station device 3 and terminal device 1 according to one embodiment of the present invention may be programs that control a CPU (Central Processing Unit) or the like to implement the functions of the aforementioned embodiment according to one embodiment of the present invention (programs that cause a computer to function). Information processed 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 HDDs (Hard Disk Drives), where it is read, modified, and written as needed by the CPU.

[0392] It should be noted that a portion of the terminal device 1 and base station device 3 in the above embodiment can also be implemented by a computer. In this case, a program for implementing the control function can be recorded on a computer-readable recording medium, and the program recorded on the recording medium can be read into a computer system and executed.

[0393] It should be noted that the "computer system" referred to herein refers to a computer system built into the terminal device 1 or base station device 3, and is a computer system comprising hardware such as an operating system and peripheral devices. Furthermore, "computer-readable recording medium" refers to removable media such as floppy disks, magneto-optical disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into the computer system.

[0394] Furthermore, "computer-readable recording media" may include media that dynamically store programs for a short period of time, such as communication lines when transmitting programs via networks such as the Internet or communication lines such as telephone lines; and media that store programs for a fixed period of time, such as volatile memory within computer systems serving as servers or clients in this context. Furthermore, the aforementioned program may be a program for implementing a portion of the aforementioned functions, or may be a program that can achieve the aforementioned functions by combining with programs already stored in the computer system.

[0395] Terminal device 1 may be configured with at least one processor and at least one memory including computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to cause terminal device 1 to perform the operations and processes described in the above-described embodiments using the processor. Base station device 3 may be configured with at least one processor and at least one memory including computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to cause base station device 3 to perform the operations and processes described in the above-described embodiments using the processor.

[0396] Furthermore, the base station apparatus 3 in the above-described embodiment can also be implemented as a collection (apparatus group) composed of multiple apparatuses. Each apparatus constituting the apparatus group may include some or all of the functions or functional blocks of the base station apparatus 3 in the above-described embodiment. A device group only needs to include all of the functions or functional blocks of the base station apparatus 3. Furthermore, the terminal apparatus 1 in the above-described embodiment can also communicate with the base station apparatus as a collection.

[0397] In addition, the base station device 3 in the above embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGenRAN, NR RAN). In addition, the base station device 3 in the above embodiment may also have some or all of the functions of the upper node for eNodeB and / or gNB.

[0398] Furthermore, the terminal device 1 and base station device 3 in the above-described embodiments may be partially or entirely implemented as LSIs, typically integrated circuits, or as chipsets. Each functional block of the terminal device 1 and base station device 3 may be implemented as a separate chip, or partially or entirely integrated. Furthermore, the integrated circuit method is not limited to LSIs; implementation may also utilize dedicated circuits or general-purpose processors. Furthermore, if advancements in semiconductor technology lead to the emergence of integrated circuit technology that replaces LSIs, integrated circuits based on such technology may also be used.

[0399] In addition, in the above-mentioned embodiment, a terminal device is described as an example of a communication device, but the invention of the present application is not limited to this and can be applied to fixed or non-movable electronic devices installed indoors and outdoors, such as AV equipment, kitchen equipment, cleaning / washing equipment, air-conditioning equipment, office equipment, vending machines and other living equipment, etc., such as terminal devices or communication devices.

[0400] While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the specific configuration is not limited to this embodiment and also includes design changes within the scope of the present invention. In addition, a solution of the present invention can be modified in various ways within the scope of the technical solution, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. In addition, a configuration obtained by replacing elements that have the same effect as the elements described in the above embodiments with each other is also included.

[0401] Industrial applicability

[0402] One embodiment of the present invention can be used in, for example, a communication system, a communication device (such as a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (such as a communication chip), or a program.

[0403] Description of Reference Numerals

[0404] 1(1A, 1B, 1C) terminal device

[0405] 3 Base station equipment

[0406] 10, 30 Wireless transceiver unit

[0407] 11, 31 Antenna

[0408] 12, 32 RF Department

[0409] 13, 33 baseband unit

[0410] 14, 34 Upper processing unit

[0411] 15, 35 Media Access Control Layer Processing Unit

[0412] 16, 36 Radio Resource Control Layer Processing Unit

[0413] 91, 92, 93, 94 search area sets

[0414] 301 Main District

[0415] 302, 303 auxiliary cells

[0416] Surveillance opportunities for the 801, 802, 803, 804, 805, and 806 search area sets

[0417] 811, 812, 813, 814 DCI formats

[0418] 1101, 1102, 1103, 1104, 1105 PDCCH

[0419] 1111, 1112, 1113, 1114, 1115 PDSCH

[0420] 1121, 1122, 1123 PUCCH< / ax>

Claims

1. A terminal device comprising: a receiving unit configured and / or programmed to receive a downlink control information DCI format and a physical downlink shared channel PDSCH scheduled by the DCI format; and a transmitting unit, the transmitting unit being configured and / or programmed to transmit HARQ-ACK information, wherein The HARQ-ACK information for a PDSCH group is generated based on at least a set of monitoring opportunities of a physical downlink control channel (PDCCH), wherein The PDSCH group includes the PDSCH scheduled by the DCI format, the set of monitoring opportunities of the PDCCH is determined by detecting an opportunity of switching of a last new feedback indicator NFI for the PDSCH group, and The set of monitoring opportunities for the PDCCH is for a PDCCH, and the HARQ-ACK information is sent in a time slot, the HARQ-ACK information including HARQ-ACK bits for a PDSCH corresponding to the PDCCH.

2. A base station apparatus comprising: a transmitting unit configured and / or programmed to transmit a downlink control information DCI format and a physical downlink shared channel PDSCH scheduled by the DCI format; and A receiving unit, the receiving unit being configured and / or programmed to receive HARQ-ACK information, wherein The HARQ-ACK information for a PDSCH group is generated based on at least a set of monitoring opportunities of a physical downlink control channel (PDCCH), wherein The PDSCH group includes the PDSCH scheduled by the DCI format, the set of monitoring opportunities of the PDCCH is determined by detecting an opportunity of switching of a last new feedback indicator NFI for the PDSCH group, and The set of monitoring opportunities for the PDCCH is for a PDCCH, and the HARQ-ACK information is sent in a time slot, the HARQ-ACK information including HARQ-ACK bits for a PDSCH corresponding to the PDCCH.

3. A communication method for a terminal device, the communication method comprising: Receiving a downlink control information DCI format and a physical downlink shared channel PDSCH scheduled by the DCI format; as well as Send HARQ-ACK information, where The HARQ-ACK information for a PDSCH group is generated based on at least a set of monitoring opportunities of a physical downlink control channel (PDCCH), wherein The PDSCH group includes the PDSCH scheduled by the DCI format, the set of monitoring opportunities of the PDCCH is determined by detecting an opportunity of switching of a last new feedback indicator NFI for the PDSCH group, and The set of monitoring opportunities for the PDCCH is for a PDCCH, and the HARQ-ACK information is sent in a time slot, the HARQ-ACK information including HARQ-ACK bits for a PDSCH corresponding to the PDCCH.

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