WO2020166627A1 - Terminal device, base station device, and communication method - Google Patents

Abstract

According to the present invention, an efficient communication can be performed. Included are: a receiving unit which receives one or a plurality of first PDSCHes including a first group ID in succession, one or a plurality of second PDSCHes including a second group ID in succession, and a second PDCCH that instructs the transmission of HARQ-ACK information; and a transmission unit in which the transmission of the HARQ-ACK information is triggered by a value of a first field of a DCI format included in the second PDCCH, and which transmits the HARQ-ACK information corresponding to one or plurality of PDSCHes including the same group ID in succession as a group ID indicated by a second field among the one or plurality of first PDSCHes in succession and the one or plurality of second PDSCHes in succession, when the first or second group ID is indicated by means of the second field of the DCI format included in the second PDCCH.

Description

Terminal device, base station device, and communication method

The present invention relates to a terminal device, a base station device, and a communication method. The present application claims priority based on Japanese Patent Application No. 2019-24515 filed in Japan on February 14, 2019, the contents of which are incorporated herein by reference.

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

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

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

(1) A first aspect of the present invention is a terminal device, in which one or more consecutive first PDSCHs having a first group ID and one consecutive PDSCH having a second group ID or A receiving unit for receiving a plurality of second PDSCHs and a second PDCCH instructing transmission of HARQ-ACK information, and the HARQ-ACK according to the value of the first field of the DCI format included in the second PDCCH. If the transmission of information is triggered and the first or second group ID is indicated by the second field of the DCI format included in the second PDCCH, then the continuous one or more first PDSCHs Transmit the HARQ-ACK information corresponding to one or more consecutive PDSCHs having the same group ID as the group ID indicated by the second field among the one or more consecutive second PDSCHs. And a transmitter.

(2) A second aspect of the present invention is a terminal device, which has a first group of one or more consecutive first PDSCHs having a first group ID and a second group ID. Transmission of a second group of consecutive one or more second PDSCHs, a third group of consecutive one or more third PDSCHs having said first group ID, and HARQ-ACK information And a receiving unit that receives a second PDCCH that indicates that the transmission of the HARQ-ACK information is triggered by the value of the first field of the DCI format included in the second PDCCH, and is included in the second PDCCH. When the first group ID is indicated by the second field of the DCI format, the third group having the same group ID as the group ID indicated by the second field among the first to third groups. A transmitting unit for transmitting the HARQ-ACK information corresponding to the one or more consecutive third PDSCHs belonging to the first PDSCH, wherein the first PDSCH precedes the second PDSCH. And the third PDSCH is received later than the second PDSCH.

(3) A third aspect of the present invention is a terminal device, which includes a plurality of groups, a receiving unit that receives a second PDCCH instructing transmission of HARQ-ACK information, and the second PDCCH. If the value of the first field of the DCI format to be transmitted triggers the transmission of the HARQ-ACK information and the second field of the DCI format included in the second PDCCH indicates the group ID, A transmission unit for transmitting the HARQ-ACK information corresponding to the last received group having the same group ID as the group ID indicated by the field, and each of the plurality of groups has the same group ID It is configured by one or more consecutive PDSCHs.

(4) A fourth aspect of the present invention is a terminal device, which includes a plurality of first PDCCHs, a receiving unit that receives a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and a plurality of the plurality of PSCHs. A second PDCCH instructing transmission of HARQ-ACK information including a HARQ process identifier, the second PDCCH including a transmission unit for transmitting a plurality of HARQ-ACK information for the PDSCH on the first PUCCH, and using the HARQ process identifier. All the plurality of HARQ-ACK information transmitted together with the HARQ-ACK information for the obtained PDSCH are transmitted on the second PUCCH.

(5) A fifth aspect of the present invention is a terminal device, which includes a plurality of first PDCCHs, a reception unit which receives a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and a plurality of the plurality of PDCCHs. A second PDCCH which includes a HARQ-ACK codebook including a plurality of HARQ-ACK information for the PDSCH and which transmits the HARQ-ACK information is received on the first PUCCH; The plurality of HARQ-ACK information transmitted in the HARQ-ACK codebook including the HARQ-ACK information for the PDSCH using the HARQ process identifier is transmitted in a second PUCCH.

(6) A sixth aspect of the present invention is a base station apparatus, which includes one or more consecutive first PDSCHs having a first group ID and one consecutive PDSCH having a second group ID. Alternatively, a plurality of second PDSCHs, a transmitter for transmitting a second PDCCH instructing transmission of HARQ-ACK information, and a value of a first field of a DCI format included in the second PDCCH may be used for the HARQ- If the transmission of ACK information is triggered and the first or second group ID is indicated by the second field of the DCI format included in the second PDCCH, the one or more consecutive first PDSCHs. And receiving the HARQ-ACK information corresponding to one or more consecutive PDSCHs having the same group ID as the group ID indicated by the second field among the one or more consecutive second PDSCHs. And a receiving unit that operates.

(7) A seventh aspect of the present invention is a base station apparatus, which includes a first group of one or a plurality of consecutive first PDSCHs having a first group ID and a second group ID. A second group of contiguous one or more second PDSCHs, a third group of contiguous one or more third PDSCHs having the first group ID, and HARQ-ACK information A transmission unit that transmits a second PDCCH that instructs transmission, and a value of the first field of the DCI format included in the second PDCCH triggers transmission of the HARQ-ACK information, and the second PDCCH is transmitted. If the second field of the included DCI format indicates the first group ID, the first to third groups having the same group ID as the group ID indicated by the second field. A receiving unit that receives the HARQ-ACK information corresponding to the one or more third PDSCHs that belong to the third group, the first PDSCH before the second PDSCH. And the third PDSCH is transmitted later than the second PDSCH.

(8) An eighth aspect of the present invention is a base station apparatus, which includes a plurality of groups, a transmission unit which transmits a second PDCCH instructing transmission of HARQ-ACK information, and the second PDCCH. If the value of the first field of the included DCI format triggers the transmission of the HARQ-ACK information, and the second field of the DCI format included in the second PDCCH indicates a group ID, the second A receiving unit for receiving the HARQ-ACK information corresponding to the last received group having the same group ID as the group ID indicated by the field of each of the plurality of groups, each of the plurality of groups having the same group ID. It is composed of one or more continuous PDSCHs.

(9) A ninth aspect of the present invention is a base station apparatus, including a plurality of first PDCCHs, a transmission unit that transmits a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and a plurality of the plurality of PSCHs. A plurality of HARQ-ACK information for the PDSCH of the first PUCCH is received, and a second PDCCH instructing reception of HARQ-ACK information including a HARQ process identifier is transmitted, and the HARQ process identifier is All the plurality of HARQ-ACK information received together with the HARQ-ACK information for the used PDSCH are received on the second PUCCH.

(10) A tenth aspect of the present invention is a base station apparatus, which includes a plurality of first PDCCHs, a transmitter that transmits a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and the plurality of PDCCHs. The receiving unit for receiving the HARQ-ACK codebook including a plurality of HARQ-ACK information for the PDSCH of the first PUCCH is received, and the second PDCCH for receiving the HARQ-ACK information including the HARQ process identifier is received. , The plurality of HARQ-ACK information received in the HARQ-ACK codebook including the HARQ-ACK information for the PDSCH using the HARQ process identifier is received in a second PUCCH.

(11) An eleventh aspect of the present invention is a communication method used for a terminal device, which has one or more continuous first PDSCHs having a first group ID and a second group ID. Receiving one or more consecutive second PDSCHs and a second PDCCH indicating the transmission of HARQ-ACK information, and the value of the first field of the DCI format included in the second PDCCH. When the transmission of the HARQ-ACK information is triggered and the first or second group ID is indicated by the second field of the DCI format included in the second PDCCH, the continuous one or more first The HARQ-ACK corresponding to one or more consecutive PDSCHs having the same group ID as the group ID indicated by the second field among one PDSCH and the one or more consecutive second PDSCHs. Transmitting the information.

(12) A twelfth aspect of the present invention is a communication method used for a terminal device, comprising: a first group of one or more consecutive first PDSCHs having a first group ID; HARQ with a second group of contiguous one or more second PDSCHs having a group ID of 1 to 3 and a third group of contiguous one or more third PDSCHs having the first group ID. Receiving a second PDCCH indicating the transmission of ACK information, and transmitting the HARQ-ACK information according to a value of a first field of a DCI format included in the second PDCCH, When the first group ID is indicated by the second field of the DCI format included in the PDCCH of, the same group ID as the group ID indicated by the second field is selected from the first to third groups. Transmitting the HARQ-ACK information corresponding to the one or more consecutive third PDSCHs belonging to the third group, the first PDSCH being greater than the second PDSCH. Is received and processed before, and the third PDSCH is received and processed after the second PDSCH.

(13) A thirteenth aspect of the present invention is a communication method used for a terminal device, comprising: receiving a plurality of groups and a second PDCCH instructing transmission of HARQ-ACK information; If the value of the first field of the DCI format included in the PDCCH of the above triggers the transmission of the HARQ-ACK information and the second field of the DCI format included in the second PDCCH indicates the group ID, Transmitting the HARQ-ACK information corresponding to the last received group having the same group ID as the group ID indicated by the second field, each of the plurality of groups being the same group. It is composed of one or more consecutive PDSCHs having an ID.

(14) A fourteenth aspect of the present invention is a communication method used in a terminal device, comprising: receiving a plurality of first PDCCHs and receiving a plurality of PDSCHs scheduled by the plurality of first PDCCHs. , Transmitting a plurality of HARQ-ACK information for the plurality of PDSCHs on a first PUCCH, receiving a second PDCCH instructing transmission of HARQ-ACK information including a HARQ process identifier, and receiving the HARQ process. All the plurality of HARQ-ACK information transmitted together with the HARQ-ACK information for the PDSCH using the identifier are transmitted on the second PUCCH.

(15) A fifteenth aspect of the present invention is a communication method used in a terminal device, comprising: receiving a plurality of first PDCCHs and receiving a plurality of PDSCHs scheduled by the plurality of first PDCCHs. , A step of transmitting a HARQ-ACK codebook including a plurality of HARQ-ACK information for the plurality of PDSCHs on a first PUCCH, and a second PDCCH instructing transmission of HARQ-ACK information including a HARQ process identifier. The plurality of HARQ-ACK information received and transmitted in the HARQ-ACK codebook including the HARQ-ACK information for the PDSCH using the HARQ process identifier is transmitted on the second PUCCH.

(16) A sixteenth aspect of the present invention is a communication method used for a base station device, which comprises one or a plurality of consecutive first PDSCHs having a first group ID and a second group ID. Transmitting one or more continuous second PDSCHs and a second PDCCH instructing transmission of HARQ-ACK information, and a value of a first field of a DCI format included in the second PDCCH Triggers the transmission of the HARQ-ACK information, and the first or second group ID is indicated by the second field of the DCI format included in the second PDCCH, the continuous one or more The HARQ-corresponding to one or more consecutive PDSCHs having the same group ID as the group ID indicated by the second field among the first PDSCH and the consecutive one or more second PDSCHs. Transmitting ACK information.

(17) A seventeenth aspect of the present invention is a communication method used in a base station device, comprising: a first group of one or more consecutive first PDSCHs having a first group ID; A second group of consecutive one or more second PDSCHs having a group ID of 2, and a third group of consecutive one or more third PDSCHs having the first group ID, Transmitting a second PDCCH instructing transmission of HARQ-ACK information, and triggering transmission of the HARQ-ACK information according to a value of a first field of a DCI format included in the second PDCCH, When the first group ID is indicated by the second field of the DCI format included in the second PDCCH, the same group ID as the group ID indicated by the second field among the first to third groups. Receiving the HARQ-ACK information corresponding to the one or more third PDSCHs in a row belonging to the third group having the first PDSCH, the first PDSCH being the second PDSCH. And the third PDSCH is transmitted earlier than the second PDSCH.

(18) An eighteenth aspect of the present invention is a communication method used in a base station apparatus, comprising: transmitting a plurality of groups and a second PDCCH instructing transmission of HARQ-ACK information; When the transmission of the HARQ-ACK information is triggered by the value of the first field of the DCI format included in the second PDCCH, and the group ID is indicated by the second field of the DCI format included in the second PDCCH. Receiving the HARQ-ACK information corresponding to the last received group having the same group ID as the group ID indicated by the second field, each of the plurality of groups being the same. It is composed of one or more consecutive PDSCHs having a group ID.

(19) A nineteenth aspect of the present invention is a communication method used in a base station device, comprising: a step of transmitting a plurality of first PDCCHs and a plurality of PDSCHs scheduled by the plurality of first PDCCHs. And receiving a plurality of HARQ-ACK information for the plurality of PDSCHs on the first PUCCH, transmitting a second PDCCH indicating a reception of HARQ-ACK information including a HARQ process identifier, and transmitting the HARQ. All the plurality of HARQ-ACK information received together with the HARQ-ACK information for the PDSCH using the process identifier are received on the second PUCCH.

(20) A twentieth aspect of the present invention is a communication method used in a base station apparatus, comprising a step of transmitting a plurality of first PDCCHs and a plurality of PDSCHs scheduled by the plurality of first PDCCHs. And a step of receiving HARQ-ACK codebook including a plurality of HARQ-ACK information for the plurality of PDSCHs on the first PUCCH, and a second PDCCH instructing reception of HARQ-ACK information including a HARQ process identifier. And the plurality of HARQ-ACK information received in the HARQ-ACK codebook including the HARQ-ACK information for the PDSCH in which the HARQ process identifier is used is received in the second PUCCH.

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

It is a conceptual diagram of the radio|wireless communications system which concerns on 1 aspect of this embodiment. 7 is an example showing a relationship _among N ^slot _symb , subcarrier interval setting μ, slot setting, and CP setting according to an aspect of the present embodiment. It is a schematic diagram showing an example of a resource grid in a subframe concerning one mode of this embodiment. It is a schematic block diagram which shows the structure of the terminal device 1 which concerns on 1 aspect of this embodiment. It is a schematic block diagram which shows the structure of the base station apparatus 3 which concerns on the one aspect|mode of this embodiment. FIG. 6 is a diagram showing an example of transmitting HARQ-ACK information corresponding to one or more PDSCHs that are grouped in the present embodiment. In this embodiment, it is the figure which showed an example of the HARQ-ACK report in the HARQ-ACK report range. FIG. 6 is a diagram showing an example of a method of transmitting HARQ-ACK information corresponding to a PDSCH of a designated slot in the present embodiment. FIG. 6 is a diagram showing an example of a method of transmitting HARQ-ACK information included in a PUCCH of a designated slot in the present embodiment. It is a figure showing an example of transmitting HARQ-ACK information based on a HARQ process identifier in this embodiment.

An embodiment of the present invention will be described below.

“A and/or B” may be terms that include “A”, “B”, or “A and B”.

The parameter or information indicating one or more values may be that the parameter or information at least includes the parameter or information indicating the one or more values. The upper layer parameter may be a single upper layer parameter. The upper layer parameter may be an information element (IE: Information Element) that includes multiple parameters.

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

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

The following describes the frame structure.

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

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

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

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

-Transmission on the downlink and/or transmission on the uplink is composed of a 10 ms frame. The frame is configured to include 10 subframes. The subframe length is 1 ms. The frame length may be given regardless of the subcarrier spacing Δf. That is, the frame setting may be given regardless of μ. The length of the subframe may be given regardless of the subcarrier spacing Δf. That is, the subframe setting may be given regardless of μ.

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

FIG. 2 is an example showing a relationship _among N ^slot _symb , subcarrier interval setting μ, slot setting, and CP setting according to an aspect of the present embodiment. In FIG. 2A, when the slot setting is 0, the subcarrier spacing setting μ is 2, and the CP setting is a normal CP (normal cyclic prefix), N ^slot _symb =14, N ^{frame, μ} _slot =40, N ^{subframe, μ} _slot =4. Further, in FIG. 2B, when the slot setting is 0, the subcarrier spacing setting μ is 2, and the CP setting is an extended CP (extended cyclic prefix), N ^slot _symb =12, N ^{frame, μ} _slot = 40, N ^{subframe, μ} _slot =4. The N ^slot _symb in slot setting 0 may correspond to twice the N ^slot _symb in slot setting 1.

The physical resources are explained below.

ㆍAn antenna port is defined by the fact that the channel on which symbols are transmitted on one antenna port can be estimated from the channel on which other symbols are transmitted on the same antenna port. If the large scale property of the channel through which the symbol is transmitted in one antenna port can be estimated from the channel in which the symbol is transmitted at the other antenna port, the two antenna ports are QCL (Quasi Co-Located). ) Is called. The large-scale characteristic may include at least a long-term characteristic of the channel. Large-scale characteristics include delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay), and beam parameters (spatial Rx parameters). You may include at least one part or all. That the first antenna port and the second antenna port are QCL with respect to the beam parameter means that the receiving beam assumed by the receiving side for the first antenna port and the receiving beam assumed by the receiving side for the second antenna port. And may be the same. That the first antenna port and the second antenna port are QCL with respect to the beam parameters means that the transmission beam assumed by the reception side for the first antenna port and the transmission beam assumed by the reception side for the second antenna port. And may be the same. In the terminal device 1, when the large-scale characteristic of the channel in which the symbol is transmitted in one antenna port can be estimated from the channel in which the symbol is transmitted in the other antenna port, it is assumed that the two antenna ports are QCL. May be done. The fact that the two antenna ports are QCL may mean that the two antenna ports are assumed to be QCL.

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

In the downlink, the carrier included in the serving cell is called the downlink carrier (or downlink component carrier). In the uplink, a carrier included in the serving cell is called an uplink carrier (uplink component carrier). The downlink component carrier and the uplink component carrier are generically called a component carrier (or carrier).

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

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

The terminal device 1 may be instructed to perform transmission/reception using only a subset of the resource grid. A subset of the resource grid is also referred to as BWP, which may be provided based at least on upper layer parameters and/or some or all of the DCI. BWP is also called a band part (BP: bandwidth part). That is, the terminal device 1 may not be instructed to perform transmission/reception using all the sets of the resource grid. That is, the terminal device 1 may be instructed to perform transmission/reception by using some frequency resources in the resource grid. One BWP may be composed of a plurality of resource blocks in the frequency domain. One BWP may be composed of a plurality of consecutive resource blocks 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 referred to as the uplink BWP.

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

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

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

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

The upper layer signal may be common RRC signaling. The common RRC signaling may include at least some or all of the following features C1 to C3.
Feature C1) BCCH Logical Channel or Feature C2 mapped to CCCH Logical Channel C2) Feature C3) Mapped to PBCH that contains at least the radioResourceConfigCommon information element.

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

The upper layer signal may be dedicated RRC signaling. The dedicated RRC signaling may include at least some or all of the following features D1 to D2.
Feature D1) feature D2) mapped to DCCH logical channel at least including radioResourceConfigDedicated information element

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

For example, the MIB, the first system information, and the second system information may be included in the common RRC signaling. In addition, a higher layer message that is mapped to the DCCH logical channel and that includes at least radioResourceConfigCommon may be included in the common RRC signaling. Also, an upper layer message that is mapped to the DCCH logical channel and does not include the radioResourceConfigCommon information element may be included in the dedicated RRC signaling. In addition, a higher-layer message that is mapped to the DCCH logical channel and that includes at least the radioResourceConfigDedicated information element may be included in the dedicated RRC signaling.

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

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

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

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

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

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

-A scheduling request (SR:SchedulingRequest) may be used at least to request a PUSCH resource for initial transmission. The scheduling request bit may be used to indicate either a positive SR (positive SR) or a negative SR (negative SR). The fact that the scheduling request bit indicates a positive SR is also referred to as “a positive SR is transmitted”. The positive SR may indicate that the terminal device 1 requests PUSCH resources for initial transmission. A positive SR may indicate that the scheduling request is triggered by the upper layer. The positive SR may be transmitted when instructed to transmit the scheduling request by the upper layer. The fact that the scheduling request bit indicates a negative SR is also referred to as “a negative SR is transmitted”. The negative SR may indicate that the PUSCH resource for initial transmission is not requested by the terminal device 1. A negative SR may indicate that the scheduling request is not triggered by higher layers. A negative SR may be sent if higher layers do not indicate to send a scheduling request.

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

PUCCH supports PUCCH format (PUCCH format 0 to PUCCH format 4). The PUCCH format may be mapped to the PUCCH and transmitted. The PUCCH format may be transmitted on the PUCCH. Transmitting the PUCCH format may be transmitting the PUCCH.

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

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

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

UL DMRS is related to the transmission of PUSCH and/or PUCCH. UL DMRS is multiplexed with PUSCH or PUCCH. The base station device 3 may use the UL DMRS to perform the channel correction of the PUSCH or PUCCH. Hereinafter, transmitting the PUSCH and UL DMRS related to the PUSCH together is simply referred to as transmitting the PUSCH. Hereinafter, transmitting the PUCCH and the UL DMRS related to the PUCCH together is simply referred to as transmitting the PUCCH. UL DMRS related to PUSCH is also called UL DMRS for PUSCH. UL DMRS related to PUCCH is also called UL DMRS for PUCCH.

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

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

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

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

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

The DCI format 0_0 includes at least part or all of 1A to 1F.
1A) Identifier for DCI formats field
1B) Frequency domain resource assignment field
1C) Time domain resource assignment field
1D) Frequency hopping flag field
1E) MCS field: Modulation and Coding Scheme field
1F) First CSI request field

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

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

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

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

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

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

The DCI format 0_1 includes at least part or all of 2A to 2G.
2A) DCI format specific field 2B) Frequency domain resource allocation field 2C) Time domain resource allocation field 2D) Frequency hopping flag field 2E) MCS field 2F) Second CSI request field (Second CSI request field)
2G) BWP field

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

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

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

The DCI format 1_0 includes at least part or all of 3A to 3H.
3A) Identifier for DCI formats field
3B) Frequency domain resource assignment field
3C) Time domain resource assignment field
3D) Frequency hopping flag field
3E) MCS field: Modulation and Coding Scheme field
3F) First CSI request field
3G) PDSCH-to-HARQ feedback timing indicator field
3H) PUCCH resource indicator field

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

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

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

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

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

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

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

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

-The uplink grant is used at least for scheduling one PUSCH in one serving cell.

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

The terminal device 1 may have one or more control resource sets (CORESET:COntrolREsourceSET) set. The terminal device 1 monitors the PDCCH in one or a plurality of control resource sets (monitor). Here, monitoring the PDCCH in one or more control resource sets may include monitoring one or more PDCCHs corresponding to each of the one or more control resource sets. The PDCCH may include one or more PDCCH candidates and/or a set of PDCCH candidates. Also, monitoring the PDCCH may include monitoring and detecting the PDCCH and/or the DCI format transmitted over the PDCCH.

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

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

Mapping of control resource set to resource block may be given based at least on higher layer parameters. The upper layer parameter may include a bitmap for a group of resource blocks (RBG: Resource Block Group). The group of resource blocks may be provided by 6 consecutive resource blocks.

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

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

The control resource set set by MIB is also referred to as CORESET#0. CORESET#0 may be the control resource set of index #0.

A certain control resource set may be a dedicated control resource set (Dedicated control resource set). The dedicated control resource set may be a control resource set set to be exclusively used for the terminal device 1. The dedicated control resource set may be provided based at least on the dedicated RRC signaling and some or all of the values of the C-RNTI.

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

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

The terminal device 1 may monitor at least one or a plurality of search areas in slots where DRX (Discontinuous reception) is not set. DRX may be provided based at least on higher layer parameters. The terminal device 1 may monitor at least one or a plurality of search area sets (Search space set) in slots where DRX is not set.

The search area set may be configured to include at least one or a plurality of search areas.

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

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

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

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

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

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

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

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 upper layer parameters.

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

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

-The downlink physical channel and downlink physical signal are also referred to as downlink signals. The uplink physical channel and the uplink physical signal are also referred to as uplink signals. The downlink signal and the uplink signal are also collectively called a physical signal. The downlink signal and the uplink signal are also collectively referred to as a signal. The downlink physical channel and the uplink physical channel are generically called a physical channel. The downlink physical signal and the uplink physical signal are collectively referred to as a physical signal.

BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel) and DL-SCH (Downlink-Shared CHannel) are transport channels. 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. HARQ (Hybrid Automatic Repeat reQuest) is controlled for each transport block in the MAC layer. The transport block is a unit of data delivered by the MAC layer to the physical layer. In the physical layer, transport blocks are mapped to codewords, and modulation processing is performed for each codeword.

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

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

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

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

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

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

FIG. 4 is a schematic block diagram showing the configuration of the terminal device 1 according to one aspect of the present embodiment. As illustrated, the terminal device 1 is configured to include a wireless transmission/reception unit 10 and an upper layer processing unit 14. The wireless transmission/reception unit 10 includes at least an antenna unit 11, an RF (Radio Frequency) unit 12, and a part or all of a baseband unit 13. The upper layer processing unit 14 is configured to include at least part or all of the medium access control layer processing unit 15 and the radio resource control layer processing unit 16. The wireless transmission/reception unit 10 is also referred to as a transmission unit, a reception unit, or a physical layer processing unit.

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

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

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

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

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

The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT: Fast Fourier Transform) on the signal from which the CP is removed, and outputs a signal in the frequency domain. Extract.

The baseband unit 13 performs an Inverse Fast Fourier Transform (IFFT) on the data to generate an OFDM symbol, adds CP to the generated OFDM symbol, generates a baseband digital signal, and generates a baseband signal. The band digital signal is converted into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

The RF unit 12 uses a low-pass filter to remove excess frequency components from the analog signal input from the baseband unit 13, upconverts the analog signal to a carrier frequency, and transmits it via the antenna unit 11. To do. Further, the RF unit 12 amplifies the power. Further, the RF unit 12 may have a function of controlling transmission power. The RF unit 12 is also referred to as a transmission power control unit.

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

FIG. 5 is a schematic block diagram showing the configuration of the base station device 3 according to an aspect of the present embodiment. As illustrated, the base station device 3 is configured to include a wireless transmission/reception unit 30 and an upper layer processing unit 34. The wireless transmission/reception unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33. The upper layer processing unit 34 includes a medium access control layer processing unit 35 and a radio resource control layer processing unit 36. The wireless transmission/reception unit 30 is also referred to as a transmission unit, a reception unit, or a physical layer processing unit.

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

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

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

The function of the wireless transmission/reception unit 30 is the same as that of the wireless transmission/reception unit 10, and thus the description thereof is omitted.

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

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

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

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

HARQ-ACK may also be referred to as ACK/NACK, HARQ feedback, HARQ-ACK feedback, HARQ response, HARQ-ACK response, HARQ information, HARQ-ACK information, HARQ control information, and HARQ-ACK control information. .. Also, the transmission of HARQ-ACK information may be referred to as a report of HARQ-ACK information.

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

HARQ control for one transport block may be called a HARQ process. One HARQ process identifier may be provided for each HARQ process.

The terminal device 1 uses the HARQ-ACK information and the HARQ-ACK codebook in the slot indicated by the DCI format 1_0 corresponding to PDSCH reception or the value of the HARQ indication field included in the DCI format 1_1. May be reported to the base station device 3.

-Since the result of LBT is busy, terminal device 1 may not be able to transmit PUCCH and/or PUSCH at the scheduled timing. Further, the base station apparatus 3 may not be able to receive the PUCCH and/or PUSCH transmitted by the terminal apparatus 1 due to the influence of interference from other devices. The base station apparatus 3 assigns a group ID to some or all PDSCHs to be transmitted to the terminal apparatus 1, and when the LBT result is in the idle state, transmits the PUCCH including HARQ-ACK corresponding to some or all of the PDSCHs. Can be requested. However, there is a problem that it is not clear which PDSCH the terminal device 1 reports to the base station device 3 when the terminal device 1 receives the request from the base station device 3.

FIG. 6 is a diagram showing an example of transmitting HARQ-ACK information corresponding to one or more PDSCHs grouped in this embodiment. The group ID of PDSCH 601, PDSCH 602, PDSCH 607, and PDSCH 608 is 1. The group ID of PDSCH 604 and PDSCH 605 is 2. The group ID of 1 may mean that the group ID is Group 1 (Group 1). The group ID of 2 may mean that the group ID is Group 2 (Group 2).

The terminal device 1 may transmit HARQ-ACK information corresponding to the PDSCH 601 and the PDSCH 602 using the PUCCH 603. The terminal device 1 may transmit HARQ-ACK information corresponding to the PDSCH 604 and the PDSCH 605 using the PUCCH 606. The terminal device 1 may transmit HARQ-ACK information corresponding to the PDSCH 607 and the PDSCH 608 using the PUCCH 609.

For one or more PUCCHs transmitted by the terminal device 1 and including one or more PUCCHs containing HARQ-ACK information, the base station device 3 cannot correctly receive the one or more PUCCHs. Transmission of the included HARQ-ACK information may be triggered using the DCI format included in the PDCCH. For example, the base station device 3 may use the PDCCH 610 to trigger a request for transmission of HARQ-ACK information corresponding to one or more PDSCHs in the group 1. In FIG. 6, when the base station device 3 triggers a request for transmission of HARQ-ACK information corresponding to one or more PDSCHs in group 1, the terminal device 1 has multiple PDSCHs in group 1, There is a problem that it is not possible to determine which PDSCH corresponding to which of the 1 PDSCHs to transmit the HARQ-ACK information. That is, when the base station device 3 triggers a request for transmission of HARQ-ACK information corresponding to one or more PDSCHs in the group 1, the terminal device 1 transmits HARQ-ACK information corresponding to PDSCH 601 and PDSCH 602. There is a problem that it cannot be determined whether to transmit HARQ-ACK information corresponding to PDSCH 607 and PDSCH 608. When the base station apparatus 3 triggers a request for transmission of HARQ-ACK information corresponding to one or more PDSCHs of the group 1, the terminal apparatus 1 corresponds to any of the HARQ-PDSCH 601, PDSCH 602, PDSCH 607, and PDSCH 608. Unable to determine whether to send ACK information.

In this embodiment, unless otherwise specified, one group includes one or more PDSCHs to which the transmission of HARQ-ACK information is transmitted in response to one trigger of the request for transmission of HARQ-ACK information. But it's okay. For example, when a request for transmitting HARQ-ACK information corresponding to one or more PDSCHs in group 1 is triggered and the terminal device 1 transmits HARQ-ACK information corresponding to PDSCH 607 and PDSCH 608, PDSCH 607 and PDSCH 608 Are grouped together.

The HARQ-ACK information transmission trigger may be referred to as a HARQ-ACK information report trigger, a HARQ-ACK information transmission trigger, and a HARQ-ACK information report request trigger.

Grouping may mean putting PDSCHs with the same group ID into the same group. A group may also include one or more consecutive PDSCHs with the same group ID. Successive PDSCHs having the same group ID belong to the same group. Successive PDSCHs with different group IDs belong to different groups. When there is a PDSCH having a group ID different from the predetermined group ID between two PDSCHs having the same predetermined group ID, the two PDSCHs having the same predetermined group ID belong to different groups. Here, the number of PDSCHs forming a group may be the maximum number of one or more consecutive PDSCHs having the same group ID. For example, PDSCH 601 and PDSCH 602 may be in the same group. Further, PDSCH 604 and PDSCH 605 may be in the same group. PDSCH 607 and PDSCH 608 may be in the same group. The PDSCH 601, the PDSCH 602, the PDSCH 607, and the PDSCH 608 do not have to be in the same group.

The group ID of the PDSCH may be given to the PDSCH when the base station device 3 schedules the PDSCH. The group ID of the PDSCH may be used when determining which group the PDSCH belongs to. The total number of PDSCH group IDs may be determined by higher layer parameters. Further, the total number of group IDs may be a predetermined value. The base station device 3 may notify the terminal device 1 of the total number of group IDs. The total number of group IDs may be determined by higher layer parameters. In this embodiment, the total number of group IDs may be X _group . Further, in this embodiment, the group ID may be the PDSCH group ID unless otherwise specified.

The base station device 3 may use the PDCCH to trigger the terminal device 1 to transmit HARQ-ACK information. The base station apparatus 3 may trigger the terminal apparatus 1 to transmit the HARQ-ACK information using the DCI format included in the PDCCH. The HARQ-ACK information may correspond to the PDSCH received before receiving the PDCCH used for the trigger.

In the PDCCH used by the base station apparatus 3 to trigger transmission of HARQ-ACK information, the DCI format included in the PDCCH includes a field for activating the trigger, a field for HARQ process identifier, a field for group ID, and a PUCCH resource. Some or all of the indicator field, the field indicating the size of the HARQ-ACK codebook, and the field indicating the number of HARQ-ACK information to be reported may be included.

The group ID of the PDSCH may be determined based at least on the CCE index to which the PDCCH scheduling the PDSCH is mapped. The group ID of the PDSCH may be determined based on at least the index to which the PDCCH that schedules the PDSCH is mapped and the predetermined value X _total . For example, the group ID of the PDSCH may be determined by a modulo operation of an index to which the PDCCH that schedules the PDSCH is mapped and a predetermined value X _total . Here, the CCE index may be the first CCE index to which the PDCCH that schedules the PDSCH is mapped. The CCE index may be the smallest CCE index to which the PDCCH that schedules the PDSCH is mapped. The CCE index may be the last CCE index to which the PDCCH that schedules the PDSCH is mapped. The CCE index may be the largest CCE index to which the PDCCH scheduling the PDSCH is mapped. Further, X _total may be a predetermined value. X _total may be the total number of group IDs. The modulo operation is a function that outputs the remainder when A is divided by B, and is expressed as (A mod B). For example, when the first CCE index to which the PDCCH scheduling the PDSCH is mapped is 5 and X _total is 4, the group ID of the PDSCH may be (5 mod 4)=1. Further, the group ID of the PDSCH may be determined by a floor calculation of the index to which the PDCCH that schedules the PDSCH is mapped and X _total . For example, the group ID of PDSCH may be calculated by floor (CCE index/X _total ). Here, the floor calculation is a function that outputs an integer by rounding down the number after the decimal point. For example, if F=3.9, floor(F)=3, and if F=5.2, floor(F)=5. For example, when the first CCE index to which the PDCCH scheduling the PDSCH is mapped is 5 and X _total is 4, the group ID of the PDSCH may be floor(5/4)=1.

The group ID of the PDSCH may be determined based on at least the index of CORESET that detects the PDCCH that schedules the PDSCH. The group ID of the PDSCH may be determined based on at least the index of CORESET detecting the PDCCH that schedules the PDSCH and the predetermined value X _total . For example, the group ID of PDSCH may be determined by a modulo operation between the index of CORESET that detects the PDCCH that schedules the PDSCH and X _total . For example, when the index of CORESET that detects the PDCCH that schedules the PDSCH is 5 and the X _total is 4, the group ID of the PDSCH may be (5 mod 4)=1. Further, the group ID of the PDSCH may be determined by the floor calculation of the index of CORESET that detects the PDCCH that schedules the PDSCH and X _total . Here, the group ID of PDSCH may be calculated by floor (index of CORESET/X _total ). For example, when the index of CORESET that detects the PDCCH that schedules the PDSCH is 5 and the X _total is 4, the group ID of the PDSCH may be floor(5/4)=1.

The group ID of the PDSCH may be determined based at least on the index of the search space set (search space set) that detects the PDCCH that schedules the PDSCH. The group ID of the PDSCH may be determined based on at least the index of the search space set that detects the PDCCH that schedules the PDSCH and the predetermined value X _total . For example, the group ID of the PDSCH may be determined by a modulo operation between the index of the search space set that detects the PDCCH that schedules the PDSCH and X _total . For example, when the index of the search space set that detects the PDCCH for scheduling the PDSCH is 5 and the X _total is 4, the group ID of the PDSCH may be (5 mod 4)=1. Further, the group ID of the PDSCH may be determined by a floor calculation between the index of the search space set that detects the PDCCH that schedules the PDSCH and X _total . Here, the group ID of PDSCH may be calculated by floor (index of search space set/X _total ). For example, when the index of the search space set that detects the PDCCH that schedules the PDSCH is 5 and the X _total is 4, the group ID of the PDSCH may be floor(5/4)=1.

The group ID of the PDSCH may be determined based on at least the HARQ process identifier (HARQ process ID) of the DCI format included in the PDCCH that schedules the PDSCH. The group ID of the PDSCH may be determined based on the HARQ process identifier of the DCI format included in the PDCCH that schedules the PDSCH and a predetermined value X _total . For example, the group ID of the PDSCH may be determined by a modulo operation of the HARQ process identifier of the DCI format included in the PDCCH that schedules the PDSCH and X _total . For example, when the HARQ process identifier of the DCI format included in the PDCCH that schedules the PDSCH is 5 and the X _total is 4, the group ID of the PDSCH may be (5 mod 4)=1. Further, the group ID of the PDSCH may be determined by a floor operation between the HARQ process identifier of the DCI format included in the PDCCH that schedules the PDSCH and X _total . Here, the group ID of PDSCH may be calculated by floor(HARQ process identifier/X _total ). For example, when the HARQ process identifier 5 of the DCI format included in the PDCCH that schedules the PDSCH and X _total is 4, the group ID of the PDSCH may be floor(5/4)=1.

The PDSCH group ID may be determined based at least on the slot index at which the PDSCH was scheduled. The group ID of the PDSCH may be determined based on at least the slot index at which the PDSCH is scheduled and the predetermined value X _total . For example, the group ID of the PDSCH may be determined by a modulo operation of the slot index at which the PDSCH is scheduled and X _total . For example, when the PDSCH scheduled slot index is 5 and X _total is 4, the PDSCH group ID may be (5 mod 4)=1. Further, the group ID of the PDSCH may be determined by the floor calculation of the slot index at which the PDSCH is scheduled and X _total . Here, the group ID of the PDSCH may be calculated as floor (slot index/X _total ). For example, when the PDSCH scheduled slot index is 5 and X _total is 4, the PDSCH group ID may be floor(5/4)=1.

The group ID of the PDSCH may be determined at least based on the PUCCH resource indicator of the DCI format included in the PDCCH that schedules the PDSCH. The group ID of the PDSCH may be determined based on at least the value of the PUCCH resource indicator of the DCI format included in the PDCCH that schedules the PDSCH and the predetermined value X _total . For example, the group ID of the PDSCH may be determined by a modulo operation between the value of the PUCCH resource indicator of the DCI format included in the PDCCH that schedules the PDSCH and X _total . For example, when the value of the PUCCH resource indicator in the DCI format included in the PDCCH that schedules the PDSCH is 5 and X _total is 4, the group ID of the PDSCH may be (5 mod 4)=1. Further, the group ID of the PDSCH may be determined by a floor calculation between the value of the PUCCH resource indicator of the DCI format included in the PDCCH that schedules the PDSCH and X _total . Here, the group ID of PDSCH may be calculated by floor (value of PUCCH resource indicator/X _total ). For example, when the value of the PUCCH resource indicator in the DCI format included in the PDCCH that schedules the PDSCH is 5 and X _total is 4, the group ID of the PDSCH may be floor(5/4)=1. ..

The group ID of the PDSCH may be determined based at least on the resource block index with which the PDSCH is scheduled. The group ID of the PDSCH may be determined based on at least the resource block index at which the PDSCH is scheduled and the predetermined value X _total . For example, the group ID of the PDSCH may be determined by a modulo operation of the resource block index at which the PDSCH is scheduled and a predetermined value X _total . Here, the resource block index may be the index of the first resource block for which the PDSCH is scheduled. Also, the resource block index may be the index of the last resource block for which the PDSCH is scheduled. For example, if the first resource block index for which the PDSCH is scheduled is 5 and the X _total is 4, the group ID of the PDSCH may be (5 mod 4)=1. Further, the group ID of the PDSCH may be determined by the floor calculation of the resource block index at which the PDSCH is scheduled and X _total . Here, the group ID of PDSCH may be calculated by floor (resource block index/X _total ). For example, when the resource block index for which the PDSCH is scheduled is 5 and the X _total is 4, the group ID of the PDSCH may be floor(5/4)=1.

The base station device 3 may notify the terminal device 1 of the group ID using a DCI format field included in the PDCCH that schedules the PDSCH. Here, the size of the field may be X _DCI bits. Further, X _DCI may be a predetermined value. Also, X _DCI may be log2(X _total ). For example, X _DCI may be a natural number including 0. The group ID may be determined based at least on the value of the DCI format field included in the PDCCH that schedules the PDSCH.

The base station device 3, the group ID to the terminal device 1 when triggered to send the HARQ-ACK information corresponding to the _{X group,} the terminal apparatus 1 corresponds to the group that received the last with the group ID _{X group} The HARQ-ACK information may be transmitted to the base station device 3. Here, the “last received group” means a PDSCH group that is received before the time when the terminal device 1 receives the trigger and is received in the shortest period after the time when the terminal device 1 receives the trigger. Good. For example, when the base station device 3 triggers the terminal device 1 to transmit the HARQ-ACK information corresponding to the group ID 1, the terminal device 1 transmits the HARQ-ACK information corresponding to the PDSCH 607 and the PDSCH 608. 3 may be transmitted.

FIG. 10 is a diagram showing an example of transmitting HARQ-ACK information based on a HARQ process identifier in this embodiment. When the base station device 3 triggers the terminal device 1 to transmit HARQ-ACK information corresponding to one or a plurality of PDSCHs corresponding to the HARQ process identifier X _HARQ and the group ID X _group using the PDCCH The terminal device 1 transmits to the base station device 3 the HARQ-ACK information corresponding to the last received group to which the PDSCH having the HARQ process identifier X _HARQ belongs among the one or more PDSCHs having the group ID X _group. You may send it. In addition, “the last received group” may mean a PDSCH group that is before the time when the terminal device 1 receives the trigger and has the shortest period after the time when the terminal device 1 receives the trigger. .. For example, in FIG. 10, the “last received” PDSCH for group ID 1 may be PDSCH 1007 and PDSCH 1008. For example, the'last received' PDSCH for group ID 2 may be PDSCH 1004 and PDSCH 1005. Moreover, the fact that the 'PDSCH belongs with HARQ process identifiers _{X HARQ'} may mean a PDSCH successive groups is a group ID of PDSCH with HARQ process identifiers _{X HARQ.} For example, in the case of PDSCH 1007 whose X _HARQ is 4, PDSCH 1007 may belong to the group of PDSCH 1007 and PDSCH 1008 whose group ID is 1.

The base station apparatus 3 instructs the terminal apparatus 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ 4 and the group ID X _group 1 using the PDCCH 1010. When triggered, the terminal device 1 may transmit HARQ-ACK information corresponding to the PDSCH 1007 having the HARQ process identifier X _HARQ 4 and the PDSCH 1008 belonging to the group to which the PDSCH 1007 belongs to the base station device 3.

The base station apparatus 3 triggers the terminal apparatus 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ and the group ID X _group using the PDCCH, When the terminal device 1 cannot receive the PDSCH corresponding to the HARQ process identifier X _HARQ and/or the group ID X _group transmitted by the base station device 3 to the terminal device 1, the terminal device 1 May set NACK and transmit it to the base station apparatus 3. Here, the number of bits X _NACK of the _NACK may be a predetermined value. Further, the number of bits X _NACK of the _NACK may be set by an upper layer parameter or may be notified by using a DCI format. X _NACK may be 1, 2 or a number 1704 or less.

The base station apparatus 3 instructs the terminal apparatus 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ 4 and the group ID X _group 1 using the PDCCH 1010. When it is triggered and the terminal device 1 cannot receive the PDSCH 1007 and PDSCH 1008 transmitted by the base station device 3 to the terminal device 1, the terminal device 1 sets NACK for the number of X _NACK bits, The NACK may be transmitted to the base station device 3.

The base station apparatus 3 instructs the terminal apparatus 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ 4 and the group ID X _group 1 using the PDCCH 1010. When it is triggered and the terminal device 1 receives the PDSCH 1007 with X _HARQ of 4, but the base station device 3 cannot receive the PDSCH 1008 transmitted to the terminal device 1, the terminal device 1 can receive the HARQ-ACK information corresponding to PDSCH 1008 that has not existed may be set to NACK, and the HARQ-ACK information corresponding to PDSCH 1007 and the NACK may be transmitted to base station apparatus 3.

The base station apparatus 3 instructs the terminal apparatus 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ 4 and the group ID X _group 1 using the PDCCH 1010. When it is triggered and the terminal device 1 receives the PDSCH 1007 with X _HARQ of 4, but the base station device 3 cannot receive the PDSCH 1008 transmitted to the terminal device 1, the terminal device 1 receives the X _NACK. NACK for the number of bits may be set and the NACK may be transmitted to the base station device 3.

The base station apparatus 3 instructs the terminal apparatus 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ 4 and the group ID X _group 1 using the PDCCH 1010. When the terminal device 1 receives the PDSCH 1008, but cannot receive the PDSCH 1007 whose X _HARQ is 4 transmitted by the base station device 3 to the terminal device 1, the terminal device 1 receives the X _NACK bit. It is also possible to set a number of NACKs and transmit the NACKs to the base station apparatus 3.

The terminal device 1 does not have to expect that the same HARQ process identifier is assigned to one or more PDSCHs belonging to the same group. The terminal device 1 may expect that different HARQ process identifiers are assigned to one or more PDSCHs belonging to the same group.

When the base station device 3 uses the PDCCH to trigger the terminal device 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ , the terminal device 1 determines that the HARQ Part or all of the HARQ-ACK information included in the PUCCH to which the HARQ-ACK information corresponding to the PDSCH having the process identifier X _HARQ is transmitted may be transmitted to the base station device 3. The PDCCH transmitted by the base station apparatus 3 for the trigger may not include the group ID.

When the base station device 3 uses the PDCCH to trigger the terminal device 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ process identifier X _HARQ , the terminal device 1 determines that the HARQ Part or all of the HARQ-ACK information included in the HARQ-ACK codebook in which the HARQ-ACK information corresponding to the PDSCH having the process identifier X _HARQ is transmitted may be transmitted to the base station apparatus 3. The PDCCH transmitted by the base station apparatus 3 for the trigger may not include the group ID.

When the base station device 3 triggers to transmit HARQ-ACK information to the terminal device 1 based on at least the group ID X _group and the number of slots X _range using the PDCCH, the terminal device 1 triggers May be set to 0, and HARQ-ACK information corresponding to one or a plurality of PDSCHs belonging to the X _group included between the slot receiving the trigger and the X _range slot before may be transmitted. Here, the slot in which the trigger is received is set to 0, and the period from the slot in which the trigger is received to the X _range slot before is called the HARQ-ACK reporting range. The X _range may be directly notified to the terminal device 1 using a DCI format field. _{Alternatively} , X _range may be one or more values of higher layer parameters. One or more values included in the upper layer parameter may be selected by a DCI format field. The terminal device 1 may transmit only HARQ-ACK information corresponding to one or more PDSCHs belonging to the X _group included in the HARQ-ACK report range. Further, the terminal device 1 transmits HARQ-ACK information corresponding to one or more PDSCHs belonging to the X _group included in the HARQ-ACK report range, and does not belong to the X _group included in the HARQ-ACK report range 1 HARQ-ACK information corresponding to one or more PDSCHs may be transmitted as NACK.

FIG. 7 is a diagram showing an example of HARQ-ACK reports in the HARQ-ACK report range in the present embodiment. The base station device 3 sets the group ID 1 and the number of slots X _range 4 indicating the HARQ-ACK report range using the DCI format field included in the PDCCH 710, and triggers the HARQ-ACK report to the terminal device 1. .. The terminal device 1 having received the PDCCH 710 determines the HARQ-ACK report range 711. Further, the terminal device 1 transmits, to the base station device 3, HARQ-ACK information corresponding to the PDSCH 707 and PDSCH 708 whose group ID included in the HARQ-ACK report range 711 is 1. In the HARQ-ACK reporting range 711 in FIG. 7, the terminal device 1 sets the HARQ-ACK information corresponding to the PDSCH 705 whose group ID is not 1 to NACK, and the HARQ corresponding to the PDSCH 707 and PDSCH 708 whose group ID is 1. -It may be transmitted in addition to the ACK information. In this case, the arrangement order of the bits for the HARQ-ACK information transmitted by the terminal device 1 may be the time order. For example, when the HARQ-ACK information corresponding to PDSCH 707 is ACK and the HARQ-ACK information corresponding to PDSCH 708 is ACK, the terminal device 1 transmits the HARQ-ACK information in the order of {NACK, ACK, ACK}. You may report it.

The base station apparatus 3 uses the DCI format field included in the PDCCH 710 to set the group ID 1, the value X _range 4 for selecting the HARQ-ACK reporting range in the upper layer parameters, and the terminal apparatus 1 to report the HARQ-ACK. Trigger. The terminal device 1 uses the value X _range 4 for selecting the HARQ-ACK report range as an index of the upper layer parameter 713, and determines the value 6 indicated by the index 4 as the HARQ-ACK report range 712. Further, the terminal device 1 transmits, to the base station device 3, HARQ-ACK information corresponding to the PDSCH 702, PDSCH 707, and PDSCH 708 whose group ID included in the HARQ-ACK report range 712 is 1. Further, in the HARQ-ACK reporting range 712 in FIG. 7, the terminal device 1 sets HARQ-ACK information corresponding to PDSCH 704 and PDSCH 705 whose group ID is not 1 to NACK, and supports PDSCH 707 and PDSCH 708 whose group ID is 1. It may be transmitted in addition to the HARQ-ACK information. In this case, the arrangement order of the bits for the HARQ-ACK information transmitted by the terminal device 1 may be the time order. For example, when the HARQ-ACK information corresponding to PDSCH 702 is ACK, the HARQ-ACK information corresponding to PDSCH 707 is ACK, and the HARQ-ACK information corresponding to PDSCH 708 is ACK, the terminal device 1 HARQ-ACK information may be reported in the order of {ACK, NACK, NACK, ACK, ACK}.

The base station device 3 instructs the terminal device 1 to transmit HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ-ACK reporting range X _range and the group ID X _group using the PDCCH. Triggered, and the terminal device 1 could not receive the PDSCH corresponding to the HARQ-ACK report range X _range and/or the group ID X _group which the base station device 3 transmitted to the terminal device 1. If the terminal apparatus 1 may transmit the NACK by setting the amount of the NACK bit number _{X NACK} to the base station apparatus 3. Here, the number of bits X _NACK of the _NACK may be a predetermined value. Moreover, the number of bits X _NACK of the _NACK may be set by an upper layer parameter, or may be notified using a DCI format. X _NACK may be 1, 2 or 1704 or less.

The base station apparatus 3 uses the PDCCH 710 to transmit the HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ-ACK reporting range X _range 4 and the group ID X _group 1. 1 and the terminal device 1 cannot receive the PDSCH 707 and PDSCH 708 transmitted by the base station device 3 to the terminal device 1, the terminal device 1 sets NACK for the number of X _NACK bits. However, the NACK may be transmitted to the base station device 3.

The base station apparatus 3 uses the PDCCH 710 to transmit the HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ-ACK reporting range X _range 4 and the group ID X _group 1. 1 and the terminal device 1 receives the PDSCH 707 included in the HARQ-ACK report range but the base station device 3 cannot receive the PDSCH 708 transmitted to the terminal device 1, the terminal device 1 May transmit HARQ-ACK information corresponding to PDSCH 707 to base station apparatus 3.

The base station apparatus 3 uses the PDCCH 710 to transmit the HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ-ACK reporting range X _range 4 and the group ID X _group 1. 1 and the terminal device 1 receives the PDSCH 707 included in the HARQ-ACK report range but the base station device 3 cannot receive the PDSCH 708 transmitted to the terminal device 1, the terminal device 1 May set HARQ-ACK information corresponding to PDSCH 708 that could not be received to NACK, and transmit the HARQ-ACK information corresponding to PDSCH 707 and the NACK to base station apparatus 3.

The base station apparatus 3 uses the PDCCH 710 to transmit the HARQ-ACK information corresponding to one or more PDSCHs corresponding to the HARQ-ACK reporting range X _range 4 and the group ID X _group 1. 1 and the terminal device 1 receives the PDSCH 707 included in the HARQ-ACK report range but the base station device 3 cannot receive the PDSCH 708 transmitted to the terminal device 1, the terminal device 1 May set NACK for the number of X _NACK bits and transmit the NACK to the base station apparatus 3.

Within the HARQ reporting range based on the X _range used by the base station device 3 for the trigger, the terminal device 1 transmits one or more PDSCHs having the group ID of the X _group triggered by the base station device 3 by the base station device 3. It may be considered as done.

The base station apparatus 3 uses the field of the DCI format included in the PDCCH to set the slot that received the PDCCH to 0, and to transmit the HARQ-ACK information corresponding to the PDSCH received before the X _indicate slot, the terminal apparatus When triggered to 1, the terminal device 1 may transmit the HARQ-ACK information associated with the PUCCH that has transmitted the HARQ-ACK information corresponding to the PDSCH received in the slot before X _indication . Here, the'HARQ-ACK information related to PUCCH' may mean a part or all of HARQ-ACK information transmitted on the PUCCH. One or more PDSCHs for HARQ-ACK information related to the PUCCH may have the same group ID or different group IDs. The X _indicator may be directly notified to the terminal device 1 using a DCI format field. _{Alternatively} , _Xindicate may be one or more values of higher layer parameters. One or more values included in the upper layer parameter may be selected by a DCI format field.

FIG. 8 is a diagram showing an example of a method of transmitting HARQ-ACK information corresponding to the PDSCH of the designated slot in the present embodiment. The base station apparatus 3 sends the HARQ-ACK report to the terminal apparatus 1 based on at least the value 4 of _Xindicate indicating the slot in which the PDSCH that is the target of the HARQ-ACK report is received using the DCI format field included in the PDCCH 810. If the trigger, the terminal apparatus 1 which has received the _PDCCH810, select the PDSCH805 received in the previous _{X Indicate} 4 slots, and HARQ-ACK information corresponding to the PDSCH805, associated with PUCCH806 that has transmitted the HARQ-ACK information HARQ-ACK information corresponding to PDSCH 804 and the base station apparatus 3 may be transmitted.

The base station apparatus 3 uses the DCI format field included in the PDCCH 810 to notify the terminal apparatus 1 of the HARQ-ACK based on at least the value 4 of _Xindicate indicating the slot in which the PDSCH for which HARQ-ACK information is reported is received. When triggering the report, the terminal device 1 that has received the PDCCH 810 selects the value 6 _indicated by the X indicator 4 as the index of the upper layer parameter 813, and the HARQ-ACK information corresponding to the PDSCH 802 received 6 slots before, HARQ-ACK information corresponding to PDSCH 801 related to PUCCH 803 that has transmitted the HARQ-ACK information may be transmitted to base station apparatus 3.

The base station device 3 uses the DCI format field included in the PDCCH to set the slot that received the PDCCH to 0, and relates to the PUCCH that transmitted the HARQ-ACK information corresponding to the PDSCH received before the X _indicate slot. Trigger the terminal device 1 to transmit some or all of the HARQ-ACK information, and the terminal device 1 cannot receive the PDSCH before the X _indicate slot transmitted by the base station device 3 to the terminal device 1. and if the terminal apparatus 1 may transmit the NACK to the base station apparatus 3 sets the minute NACK bit number _{X NACK.} Here, the number of bits X _NACK of the _NACK may be a predetermined value. Further, the number of bits X _NACK of the _NACK may be set by an upper layer parameter or may be notified by using a DCI format. X _NACK may be 1, 2 or 1704 or less.

The base station apparatus 3 uses the DCI format field included in the PDCCH 810 to set the slot that received the PDCCH 810 to 0, and relates to the PUCCH that transmitted the HARQ-ACK information corresponding to the PDSCH received 4 slots before X _indicate. to trigger the terminal device 1 to transmit some or HARQ-ACK information of the whole, and the terminal device 1, the _{X Indicate} 4 slot before receiving the PDSCH805 the base station apparatus 3 has transmitted to the terminal device 1 If not possible, the terminal device 1 may set NACK for the number of X _NACK bits and transmit the NACK to the base station device 3. Here, the number of bits X _NACK of the _NACK may be a predetermined value. Further, the number of bits X _NACK of the _NACK may be set by an upper layer parameter or may be notified by using a DCI format. X _NACK may be 1, 2 or 1704 or less.

The base station apparatus 3 uses the DCI format field included in the PDCCH to set the slot in which the PDCCH is received to 0, and transmits HARQ-ACK information related to the PUCCH transmitted by the terminal apparatus 1 before the X _indicate slot. When the terminal device 1 is triggered as described above, the terminal device 1 may transmit a part or all of HARQ-ACK information included in the PUCCH transmitted before the X _indicate slot. One or more PDSCHs for one or more HARQ-ACK information included in the PUCCH may have the same group ID or different group IDs. The X _indicator may be directly notified to the terminal device 1 using a DCI format field. _{Alternatively} , _Xindicate may be one or more values of higher layer parameters. One or more values included in the upper layer parameter may be selected by a DCI format field.

FIG. 9 is a diagram showing an example of a method of transmitting HARQ-ACK information included in the PUCCH of the designated slot in the present embodiment. The base station apparatus 3 uses the DCI format field included in the PDCCH 910 to set the slot in which the PDCCH 910 was received to 0, and transmits HARQ-ACK information related to the PUCCH 906 transmitted by the terminal apparatus 1 three slots before X _indicate. When the terminal device 1 is triggered to do so, the terminal device 1 selects the PUCCH 906 transmitted 3 slots before the X _indicate , and outputs the HARQ-ACK information corresponding to the PDSCH 904 and/or PDSCH 905 included in the PUCCH 906 to the base station device. 3 may be transmitted.

The base station apparatus 3 uses the DCI format field included in the PDCCH 910 to set the slot in which the PDCCH 910 is received to 0, and the terminal apparatus 1 is set to the previous slot based on at least the value of the upper layer parameter _indicated by the X indicator 3. When the terminal device 1 is triggered to transmit the HARQ-ACK information related to the transmitted PUCCH, the terminal device 1 selects the value 5 _indicated by X indicator as the index of the upper layer parameter 913, and transmits 5 slots before. HARQ-ACK information corresponding to PDSCH 901 and/or PDSCH 902 included in PUCCH 903 may be transmitted to base station apparatus 3.

The base station apparatus 3 uses the DCI format field included in the PDCCH to set the slot in which the PDCCH is received to 0, and transmits HARQ-ACK information related to the PUCCH transmitted by the terminal apparatus 1 before the X _indicate slot. When there is no PUCCH transmitted in the slot before the number of slots based on X _indicator , the terminal device 1 sets _{NACK for} the number of bits of X _NACK. The NACK may be transmitted to the base station device 3. Here, the number of bits X _NACK of the _NACK may be a predetermined value. Moreover, the number of bits X _NACK of the _NACK may be set by an upper layer parameter, or may be notified using a DCI format. X _NACK may be 1, 2 or 1704 or less.

The base station apparatus 3 uses the DCI format field included in the PDCCH to set the slot that received the PDCCH to 0, and relates to the PUCCH transmitted by the terminal apparatus 1 to the previous slot corresponding to the value based on X _indicator. When the terminal device 1 is triggered to transmit the HARQ-ACK information and there is no PUCCH transmitted in the previous slot corresponding to the value based on the X _indicator , the terminal device 1 determines the number of X _NACK bits. Alternatively, NACK minutes may be set and transmitted to the base station device 3. Here, the number of bits X _NACK of the _NACK may be a predetermined value. Moreover, the number of bits X _NACK of the _NACK may be set by an upper layer parameter, or may be notified using a DCI format. X _NACK may be 1, 2 or 1704 or less.

If there is no PDSCH of interest in a certain slot and/or HARQ-ACK reporting range triggered by the base station apparatus 3, the terminal apparatus 1 may transmit a NACK to the base station apparatus 3. Here, the number of bits X _NACK of the _NACK may be a predetermined value. Moreover, the number of bits X _NACK of the _NACK may be set by an upper layer parameter, or may be notified using a DCI format. X _NACK may be 1, 2 or 1704 or less.

When there is no PDSCH having the triggered group ID in a certain slot and/or HARQ-ACK reporting range triggered by the base station apparatus 3, the terminal apparatus 1 may transmit NACK to the base station apparatus 3. Here, the number of bits X _NACK of the _NACK may be a predetermined value. Moreover, the number of bits X _NACK of the _NACK may be set by an upper layer parameter, or may be notified using a DCI format. X _NACK may be 1, 2 or 1704 or less.

In the PDCCH used by the base station apparatus 3 to trigger transmission of HARQ-ACK information, the PDCCH may include a DCI format field that specifies a PUCCH resource for reporting the HARQ-ACK information.

When the base station device 3 triggers the transmission of HARQ-ACK information using the PDCCH, the group ID may be notified to the terminal device 1 using the DCI format field included in the PDCCH.

When the base station apparatus 3 triggers the transmission of HARQ-ACK information using the PDCCH, the group ID may be notified to the terminal apparatus 1 based on at least the CCE index to which the PDCCH is mapped. Here, the CCE index may be the first CCE index to which the PDCCH is mapped or the last CCE index to which the PDCCH is mapped. For example, the group ID may be {first CCE index mod X _total }. Here, X _total may be the total number of groups. Further, X _total may be a predetermined value. Further, the group ID may be {floor (last CCE index/X _total )}.

When the base station device 3 triggers the transmission of HARQ-ACK information using the PDCCH, the group ID may be notified to the terminal device 1 based on at least the index of CORESET that detected the PDCCH. For example, the group ID may be {index MOD X _{total of} CORESET detecting PDCCH}. Further, the group ID may be {floor(index of CORESET detecting PDCCH/X _total )}.

When the base station device 3 triggers the transmission of HARQ-ACK information using the PDCCH, even if the terminal device 1 is notified of the group ID based on at least the index of the search region set (search space set) in which the PDCCH is detected. Good. For example, the group ID may be {index mod X _total of the search area set in which the PDCCH is detected}. Further, the group ID may be {floor(index of search area set in which PDCCH is detected/X _total )}.

When the base station apparatus 3 triggers the transmission of HARQ-ACK information using the PDCCH, the base station apparatus 3 notifies the terminal apparatus 1 of the group ID based on at least the PUCCH resource indicator of the DCI format included in the PDCCH (PUCCH resource indicator). Good. The PUCCH resource indicator may indicate the PUCCH resource of the PUCCH that transmits the HARQ-ACK information corresponding to the trigger. For example, the group ID may be {PUCCH resource indicator value mod X _total }. The group ID may be {floor(value of PUCCH resource indicator/X _total )}.

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

(1) In order to achieve the above object, the embodiments of the present invention take the following means. That is, a first aspect of the present invention is a terminal device, which includes one or more consecutive first PDSCHs having a first group ID and one or more consecutive PDSCHs having a second group ID. Second PDSCH and a receiving unit that receives the second PDCCH instructing the transmission of HARQ-ACK information, and the HARQ-ACK information according to the value of the first field of the DCI format included in the second PDCCH. Is triggered and the first or second group ID is indicated by the second field of the DCI format included in the second PDCCH, the continuous one or more first PDSCH and the Transmission for transmitting the HARQ-ACK information corresponding to one or more consecutive PDSCHs having the same group ID as the group ID indicated by the second field among the consecutive one or more PDSCHs And a section.

(2) In the first aspect of the present embodiment, the group ID corresponding to the PDSCH is element 1, element 2, element 3, element 4, element 5, element 6, element 7, and part of element 8 Or given at least based on everything,
The element 1 is a CCE index of a first PDCCH that schedules the PDSCH,
The element 2 is an index of a control resource set of the first PDCCH,
The element 3 is an index of the search region set of the first PDCCH,
The element 4 is a HARQ process identifier of the first PDSCH,
The element 5 is a slot index of the first PDSCH,
The element 6 is a value indicated by a PUCCH resource indicator field included in the DCI format included in the first PDCCH,
The element 7 is an index of a resource block given to the PDSCH,
The element 8 is the value of the third field of the DCI format included in the first PDCCH.

(3) A second aspect of the present embodiment is a terminal device, which includes a first group of one or more consecutive first PDSCHs having a first group ID and a second group ID. A second group of contiguous one or more second PDSCHs, a third group of contiguous one or more third PDSCHs having the first group ID, and HARQ-ACK information The receiving unit that receives the second PDCCH instructing the transmission and the value of the first field of the DCI format included in the second PDCCH triggers the transmission of the HARQ-ACK information, and the second PDCCH is transmitted. If the second field of the included DCI format indicates the first group ID, the first to third groups having the same group ID as the group ID indicated by the second field. A transmitting unit that transmits the HARQ-ACK information corresponding to the one or more third PDSCHs that belong to the third group, the first PDSCH before the second PDSCH. And the third PDSCH is received later than the second PDSCH.

(4) A third aspect of the present embodiment is a terminal device, which includes a plurality of groups, a receiving unit that receives a second PDCCH instructing transmission of HARQ-ACK information, and a second PDCCH. If the value of the first field of the included DCI format triggers the transmission of the HARQ-ACK information and the second field of the DCI format included in the second PDCCH indicates a group ID, the second And a transmitter for transmitting the HARQ-ACK information corresponding to the last received group having the same group ID as the group ID indicated by the field of FIG. It is composed of one or more continuous PDSCHs.

(5) A fourth aspect of the present embodiment is a terminal device, which includes a plurality of first PDCCHs, a receiving unit which receives a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and a plurality of the plurality of PDSCHs. A plurality of HARQ-ACK information for PDSCH of the first PUCCH is transmitted, and a second PDCCH instructing transmission of HARQ-ACK information including a HARQ process identifier is received, and the HARQ process identifier is All the plurality of HARQ-ACK information transmitted together with the HARQ-ACK information for the used PDSCH are transmitted on the second PUCCH.

(6) A fifth aspect of the present embodiment is a terminal device, which includes a plurality of first PDCCHs, a receiving unit which receives a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and a plurality of the plurality of PDSCHs. Of the PDSCH, the HARQ-ACK codebook including a plurality of HARQ-ACK information is provided on the first PUCCH, and the second PDCCH indicating the transmission of the HARQ-ACK information including the HARQ process identifier is received. , The plurality of HARQ-ACK information transmitted in the HARQ-ACK codebook including the HARQ-ACK information for the PDSCH using the HARQ process identifier is transmitted in a second PUCCH.

(7) A sixth aspect of the present embodiment is a base station apparatus, which is one or a plurality of consecutive first PDSCHs having a first group ID and a consecutive one having a second group ID. A transmitting unit that transmits one or more second PDSCHs, a second PDCCH that instructs transmission of HARQ-ACK information, and the HARQ according to the value of the first field of the DCI format included in the second PDCCH. -If it triggers the transmission of ACK information and the first or second group ID is indicated by the second field of the DCI format included in the second PDCCH, then the first or more consecutive first The HARQ-ACK information corresponding to one or more consecutive PDSCHs having the same group ID as the group ID indicated by the second field among the PDSCH and the one or more consecutive second PDSCHs. A receiving unit for receiving.

(8) In the sixth aspect of the present embodiment, the group ID corresponding to the PDSCH is element 1, element 2, element 3, element 4, element 5, element 6, element 7, and part of element 8 Or given at least based on everything,
The element 1 is a CCE index of a first PDCCH that schedules the PDSCH,
The element 2 is an index of a control resource set of the first PDCCH,
The element 3 is an index of the search region set of the first PDCCH,
The element 4 is a HARQ process identifier of the first PDSCH,
The element 5 is a slot index of the first PDSCH,
The element 6 is a value indicated by a PUCCH resource indicator field included in the DCI format included in the first PDCCH,
The element 7 is an index of a resource block given to the PDSCH,
The element 8 is the value of the third field of the DCI format included in the first PDCCH.

(9) A seventh aspect of the present embodiment is a base station device, which includes a first group of one or more consecutive first PDSCHs having a first group ID and a second group ID. A second group of contiguous one or more second PDSCHs with the same, a third group of contiguous one or more third PDSCHs with the first group ID, and HARQ-ACK information. And a transmitter for transmitting a second PDCCH instructing transmission of the HARQ-ACK information according to the value of the first field of the DCI format included in the second PDCCH, and the second PDCCH. When the first group ID is indicated by the second field of the DCI format included in the above, the first group ID has the same group ID as the group ID indicated by the second field among the first to third groups. A receiving unit that receives the HARQ-ACK information corresponding to the one or more third PDSCHs that belong to a third group, the first PDSCH being greater than the second PDSCH. Transmitted earlier, the third PDSCH is transmitted later than the second PDSCH.

(10) An eighth aspect of the present embodiment is a base station device, which includes a plurality of groups, a transmission unit that transmits a second PDCCH instructing transmission of HARQ-ACK information, and the second PDCCH. If the value of the first field of the DCI format included in the second triggers the transmission of the HARQ-ACK information and the second field of the DCI format included in the second PDCCH indicates a group ID, A receiving unit for receiving the HARQ-ACK information corresponding to the last received group having the same group ID as the group ID indicated by the field 2 in the above, each of the plurality of groups having the same group ID. Is configured by one or more consecutive PDSCHs having

(11) A ninth aspect of the present embodiment is a base station device, which includes a plurality of first PDCCHs, a transmission unit that transmits a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and A receiving unit for receiving a plurality of HARQ-ACK information for a plurality of PDSCHs on a first PUCCH, transmitting a second PDCCH instructing reception of HARQ-ACK information including a HARQ process identifier, and transmitting the HARQ process identifiers. All the plurality of HARQ-ACK information received together with the HARQ-ACK information for the PDSCH used for are received on the second PUCCH.

(12) A tenth aspect of the present embodiment is a base station apparatus, which includes a plurality of first PDCCHs, a transmission unit that transmits a plurality of PDSCHs scheduled by the plurality of first PDCCHs, and A second PDCCH that includes a HARQ-ACK codebook including a plurality of HARQ-ACK information for a plurality of PDSCHs is received on the first PUCCH, and a second PDCCH that indicates reception of HARQ-ACK information including a HARQ process identifier is received. Then, the plurality of HARQ-ACK information received in the HARQ-ACK codebook including the HARQ-ACK information for the PDSCH using the HARQ process identifier is received in the second PUCCH.

A program that operates in the base station device 3 and the terminal device 1 according to the present invention controls a CPU (Central Processing Unit) and the like (functions a computer so as to realize the functions of the above-described embodiments related to the present invention. Program). The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). If necessary, the CPU reads, corrects and writes.

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

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

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

Also, the base station device 3 in the above-described embodiment can be realized as an aggregate (device group) composed of a plurality of devices. Each of the devices forming the device group may include a part or all of the functions or function blocks of the base station device 3 according to the above-described embodiment. It suffices that each device group has one or more functions or each functional block of the base station device 3. Further, the terminal device 1 according to the above-described embodiment can also communicate with the base station device as an aggregate.

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

Further, part or all of the terminal device 1 and the base station device 3 in the above-described embodiments may be realized as an LSI which is typically an integrated circuit, or may be realized as a chip set. Each functional block of the terminal device 1 and the base station device 3 may be individually made into a chip, or a part or all of them may be integrated and made into a chip. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when a technique for forming an integrated circuit that replaces LSI appears with the progress of semiconductor technology, it is also possible to use an integrated circuit according to the technique.

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

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes design changes and the like within a range not departing from the gist of the present invention. Further, the present invention can be variously modified within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Be done. Further, a configuration in which elements described in each of the above embodiments and having the same effect are replaced with each other is also included.

Claims (6)

1. A first one or more consecutive PDSCHs having a first group ID, one or more consecutive second PDSCHs having a second group ID, and a first instruction to transmit HARQ-ACK information. A receiver for receiving the PDCCH of 2;
   The transmission of the HARQ-ACK information is triggered by the value of the first field of the DCI format included in the second PDCCH, and the first or the first by the second field of the DCI format included in the second PDCCH. When two group IDs are indicated, the same group as the group ID indicated by the second field among the consecutive one or more first PDSCHs and the consecutive one or more second PDSCHs. A terminal device, comprising: a transmitter that transmits the HARQ-ACK information corresponding to one or more consecutive PDSCHs having an ID.
2. The group ID to which the PDSCH corresponds is given based on at least part or all of element 1, element 2, element 3, element 4, element 5, element 6, element 7, and element 8,
   The element 1 is a CCE index of a first PDCCH that schedules the PDSCH,
   The element 2 is an index of a control resource set of the first PDCCH,
   The element 3 is an index of the search region set of the first PDCCH,
   The element 4 is a HARQ process identifier of the first PDSCH,
   The element 5 is a slot index of the first PDSCH,
   The element 6 is a value indicated by a PUCCH resource indicator field included in the DCI format included in the first PDCCH,
   The element 7 is an index of a resource block given to the PDSCH,
   The terminal device according to claim 1, wherein the element 8 is a value of a third field of a DCI format included in the first PDCCH.
3. A first one or more consecutive PDSCHs having a first group ID, one or more consecutive second PDSCHs having a second group ID, and a first instruction to transmit HARQ-ACK information. A transmitter for transmitting the PDCCH of 2;
   The value of the first field of the DCI format included in the second PDCCH may trigger the transmission of the HARQ-ACK information, and the first or the second field of the DCI format included in the second PDCCH may be used. When two group IDs are indicated, the same group as the group ID indicated by the second field among the consecutive one or more first PDSCHs and the consecutive one or more second PDSCHs. A base station apparatus, comprising: a receiving unit that receives the HARQ-ACK information corresponding to one or more consecutive PDSCHs having an ID.
4. The group ID to which the PDSCH corresponds is given based on at least part or all of element 1, element 2, element 3, element 4, element 5, element 6, element 7, and element 8,
   The element 1 is a CCE index of a first PDCCH that schedules the PDSCH,
   The element 2 is an index of a control resource set of the first PDCCH,
   The element 3 is an index of the search region set of the first PDCCH,
   The element 4 is a HARQ process identifier of the first PDSCH,
   The element 5 is a slot index of the first PDSCH,
   The element 6 is a value indicated by a PUCCH resource indicator field included in the DCI format included in the first PDCCH,
   The element 7 is an index of a resource block given to the PDSCH,
   The base station apparatus according to claim 3, wherein the element 8 is a value of a third field of a DCI format included in the first PDCCH.
5. A communication method used in a terminal device,
   A first one or more consecutive PDSCHs having a first group ID, one or more consecutive second PDSCHs having a second group ID, and a first instruction to transmit HARQ-ACK information. Receiving two PDCCHs,
   The transmission of the HARQ-ACK information is triggered by the value of the first field of the DCI format included in the second PDCCH, and the first or the first by the second field of the DCI format included in the second PDCCH. When two group IDs are indicated, the same group as the group ID indicated by the second field among the consecutive one or more first PDSCHs and the consecutive one or more second PDSCHs. Transmitting the HARQ-ACK information corresponding to one or more consecutive PDSCHs having an ID.
6. A communication method used for a base station device, comprising:
   A first one or more consecutive PDSCHs having a first group ID, one or more consecutive second PDSCHs having a second group ID, and a first instruction to transmit HARQ-ACK information. Transmitting two PDCCHs,
   The value of the first field of the DCI format included in the second PDCCH may trigger the transmission of the HARQ-ACK information, and the first or the second field of the DCI format included in the second PDCCH may be used. When two group IDs are indicated, the same group as the group ID indicated by the second field among the consecutive one or more first PDSCHs and the consecutive one or more second PDSCHs. Transmitting the HARQ-ACK information corresponding to one or more consecutive PDSCHs having an ID.

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