JP2020061650A - Terminal device, base station device and communication method - Google Patents

Abstract

To provide a method for achieving efficient communication in a new radio access system New Radio (NR).SOLUTION: A terminal device 1 includes a medium access control layer processing section 15 for developing HARQ-ACK (Hybrid Automatic Repeat reQuest) information corresponding to a PDSCH (Physical Downlink Shared Channel) and a radio transmission/reception section (a physical layer processing section) 10 for receiving the PDSCH at each of a part or all of PDSCH reception candidates except one or a plurality of PDSCH candidates with the same value as bof PDSCH reception candidates to which SPS PDSCH releases relate in a certain slot.SELECTED DRAWING: Figure 4

Description

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

The wireless access method and wireless network of cellular mobile communication (hereinafter, referred to as “Long Term Evolution (LTE: registered trademark)” or “Evolved Universal Terrestrial Radio Access: EUTRA”) is a third generation partnership project (3rd Generation). Partnership Project: 3GPP). In 3GPP, a new radio access scheme (hereinafter referred to as “New Radio (NR)”) is under study (Non-patent Documents 1, 2, 3, 4). In LTE, the base station device is also referred to as an eNodeB (evolved NodeB). In NR, the base station device is also referred to as gNodeB. In LTE and NR, the terminal device is also referred to as UE (User Equipment). LTE and NR are cellular communication systems in which a plurality of areas covered by a base station device are arranged in a cell. A single base station device may manage a plurality of cells.

  In NR, a set of downlink BWP (bandwidth part) and uplink BWP is set for one serving cell (Non-Patent Document 3). The terminal device receives the PDCCH and PDSCH in the downlink BWP.

"3GPP TS 38.211 V15.1.0 (2018-06), NR; Physical channels and modulation", R1-1807955, 6th June, 2018. "3GPP TS 38.212 V15.1.1 (2018-05), NR; Multiplexing and channel coding", R1-1807956, 29th May, 2018. "3GPP TS 38.213 V15.1.0 (2018-05), NR; Physical layer procedures for control", R1-1807957, 31st May, 2018. "3GPP TS 38.214 V15.1.0 (2018-06), NR; Physical layer procedures for data", R1-1807958, 6th June, 2018.

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

(1) A first aspect of the present invention is a terminal device, a processing unit that generates HARQ-ACK information corresponding to PDSCH, and a PDSCH reception candidate b _r associated with an SPS PDSCH release in a certain slot _, and a receiver that receives PDSCH with each of some or all of the PDSCH reception candidates excluding one or more PDSCH candidates of b _{r, k} having the same value as _k .

(2) A second aspect of the present invention is a base station apparatus, comprising: a transmitter that transmits PDSCH; and a receiver that receives HARQ-ACK information corresponding to the PDSCH, and the transmitter is , In one slot, schedule PDSCHs for some or all of the PDSCH reception candidates except one or more PDSCH candidates of b _{r, k} with the same value as b _{r, k} of the PDSCH reception candidates to which the SPS PDSCH release is related .

(3) A third aspect of the present invention is a communication method used for a terminal device, wherein HARQ-ACK information corresponding to PDSCH is generated, and in a certain slot, b of PDSCH reception candidates related to SPS PDSCH release is b. PDSCH is received by some or all of PDSCH reception candidates except for one or more PDSCH candidates of b _{r, k} having the same value as _{r, k} .

(4) A fourth aspect of the present invention is a communication method used in a base station apparatus, which transmits PDSCH, receives HARQ-ACK information corresponding to the PDSCH, and releases an SPS PDSCH in a certain slot. Schedule PDSCHs for some or all of the PDSCH reception candidates except for one or more PDSCH candidates of b _{r, k} having the same value as b _{r, k} of the related PDSCH reception candidates.

  According to 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 of this embodiment. It is a figure which shows schematic structure of the radio | wireless frame of this embodiment. It is a figure which shows schematic structure of the uplink slot in this embodiment. It is a schematic block diagram which shows the structure of the terminal device 1 of this embodiment. It is a schematic block diagram which shows the structure of the base station apparatus 3 of this embodiment. It is a figure which shows an example of default PDSCH time domain resource allocation in this embodiment. It is a figure showing an example of a procedure which determines a set of MA _{, c} occasions of a PDSCH reception candidate in this embodiment. . It is the figure which showed the procedure of an example which the terminal device 1 determines the HARQ-ACK information bit of the HARQ-ACK codebook transmitted by PUCCH in this embodiment. It is the figure which showed an example which determines the HARQ-ACK codebook size corresponding to PDSCH in this embodiment. It is a figure showing an example which determines a HARQ-ACK codebook size corresponding to PDSCH and SPS PDSCH release in this embodiment.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 1 is a conceptual diagram of a wireless communication system of this embodiment. 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 referred to as the terminal device 1.

  Physical channels and physical signals of this embodiment will be described.

In uplink radio communication from the terminal device 1 to the base station device 3, the following uplink physical channels are used. The uplink physical channel is used to transmit the information output from the upper layer.
・ PUCCH (Physical Uplink Control Channel)
・ PUSCH (Physical Uplink Shared Channel)
・ PRACH (Physical Random Access Channel)

In the PUCCH, the terminal device 1 uses Uplink Control Information (UCI).
) Is transmitted to the base station device 3. In addition, in this embodiment, the terminal device 1 may perform PUCCH transmission in a primary cell and / or a secondary cell having a primary cell function, and / or a secondary cell capable of transmitting the PUCCH. That is, PUCCH may be transmitted in a specific serving cell.

The uplink control information is downlink channel state information (Channel State Information:
CSI), PUSCH resource request (Scheduling Request: SR), downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel: DL-SCH, Physical Downlink Shared Channel: PDSCH) ) To HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement
), At least one is included.

  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. DTX (discontinuous transmission) may mean that downlink data is not detected. DTX may mean that it did not detect data to send a HARQ-ACK response. 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-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. .

  The HARQ-ACK bit may indicate ACK or NACK corresponding to one CBG (Code Block Group) included in the transport block.

  The channel state information (CSI: Channel State Information) may include a channel quality indicator (CQI: Channel Quality Indicator) and a rank indicator (RI: Rank Indicator). The channel quality indicator may include a precoder matrix indicator (PMI) and a CSI-RS indicator (CRI: CSI-RS Resource indicator). The channel state information may include a precoder matrix indicator. CQI is an index related to channel quality (propagation strength), and PMI is an index indicating a precoder. RI is an index indicating the transmission rank (or the number of transmission layers). CSI may also be called a CSI report and CSI information. The transmission layer may be referred to as a layer.

The CSI report may be split into one or more. For example, when the CSI report is divided into two, the first divided CSI report may be CSI-Part1 and the second divided CSI report may be CSI-Part2. The size of the CSI report may be the number of bits of some or all of the divided CSI. The size of the CSI report may be the number of bits of CSI-Part1. The size of the CSI report may be the number of bits of CSI-Part2. The size of the CSI report may be the sum of the number of bits of a plurality of divided CSI reports. The sum total of the number of divided CSI bits is the number of bits of the CSI report before the division. The CSI-Part 1 may include at least some or all of RI, CRI, CQI, and PMI. The CSI-Part 2 may include some or all of PMI, CQI, RI, and CRI. The size of the CSI report may be set so as not to exceed a predetermined threshold (a predetermined number of bits).

  The scheduling request (SR: Scheduling Request) may be used at least to request the 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”. A positive SR may indicate that the terminal device 1 requests PUSCH resources for initial transmission. A positive SR may indicate that the scheduling request is triggered by higher layers. 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”. A 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 instruct to send a scheduling request.

  The scheduling request bit may be used to indicate either a positive SR or a negative SR for any one or more SR configurations. Each of the one or more SR settings may correspond to one or more logical channels. A positive SR for an SR setting may be a positive SR for any or all of the one or more logical channels corresponding to the SR setting. Negative SR may not correspond to a particular SR setting. Showing a negative SR may mean showing a negative SR for all SR settings.

  The SR setting may be a scheduling request ID (Scheduling Request ID).

  PUSCH may be used to transmit uplink data. PUSCH may be used to send HARQ-ACK and / or channel state information with the uplink data. Also, PUSCH may be used to transmit only channel state information or HARQ-ACK and / or channel state information only. That is, the PUSCH may be used to transmit the uplink control information. The terminal device 1 may transmit the PUSCH based on the detection of a PDCCH (Physical Downlink Control Channel) including an uplink grant (Uplink Grant). The uplink data may include at least part or all of a transport block, a medium access control protocol data unit (MAC PDU), and a UL-SCH (UpLink-Shared CH channel). .

The PRACH is used to transmit a random access preamble (random access message 1). The PRACH is a request for initial connection establishment procedure, handover procedure, connection re-establishment procedure, synchronization for uplink data transmission (timing adjustment), and PUSCH (UL-SCH) resource request. It may be used to indicate at least a portion.

In the uplink wireless communication from the terminal device 1 to the base station device 3, the following uplink physical signals may be used. 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.
-Uplink reference signal (UL RS: Uplink Reference Signal)

In this embodiment, at least the following two types of uplink reference signals may be used.
・ DMRS (DeModulation Reference Signal)
・ SRS (Sounding Reference Signal)

  DMRS relates to the transmission of PUSCH and / or PUCCH. The DMRS may be multiplexed with PUSCH or PUCCH. The base station device 3 uses the DMRS to correct the propagation path of the PUSCH or PUCCH. Hereinafter, transmitting both PUSCH and DMRS is simply referred to as transmitting PUSCH. The DMRS may correspond to the PUSCH. Hereinafter, transmitting both PUCCH and DMRS is simply referred to as transmitting PUCCH. The DMRS may correspond to the PUCCH.

  The SRS may not be associated with PUSCH and / or PUCCH transmissions. The SRS may relate to the transmission of PUSCH and / or PUCCH. The base station device 3 may use SRS for measuring the channel state. The SRS may be transmitted in the last one or more predetermined number of OFDM symbols in the uplink slot.

In downlink radio communication from the base station device 3 to the terminal device 1, the following downlink physical channels may be used. The downlink physical channel may be 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 to broadcast a master information block (MIB: Master Information Block) commonly used in one or a plurality of terminal devices 1 in a serving cell, an active BWP (Bandwidth Part), or a carrier. The PBCH may be transmitted based on a predetermined transmission interval. For example, PBCH may be transmitted at intervals of 80 ms. At least a part of the information included in the PBCH may be updated every 80 ms. The PBCH may be configured with a predetermined number of subcarriers (for example, 288 subcarriers) in the frequency domain. Also, the PBCH may be configured to include 2, 3, or 4 OFDM symbols in the time domain. The MIB may include information related to the identifier (index) of the synchronization signal. The MIB may include information indicating at least part of a slot number, a subframe number, and a radio frame number in which the PBCH is transmitted. The first setting information may be included in the MIB. The first setting information may be setting information used at least for part or all of the random access message 2, the random access message 3, and the random access message 4.

  The PDCCH is used to transmit downlink control information (DCI: Downlink Control Information). The downlink control information is also called a DCI format. The DCI format may also be configured to include one or more fields of downlink control information. The downlink control information may include at least either an uplink grant or a downlink grant.

  The uplink grant may be used for scheduling a single PUSCH in a single cell. The uplink grant may be used for scheduling multiple PUSCHs in multiple slots in a single cell. The uplink grant may be used for scheduling a single PUSCH in multiple slots in a single cell. The downlink control information including the uplink grant may also be referred to as an uplink-related DCI format.

  One downlink grant is used at least for scheduling one PDSCH in one serving cell. The downlink grant is used at least for scheduling the PDSCH in the same slot as the slot in which the downlink grant is transmitted. The downlink control information including the downlink grant may also be referred to as a downlink-related DCI format.

  PDSCH is used for transmitting downlink data (TB, MAC PDU, DL-SCH, PDSCH, CB, CBG). PDSCH is used at least for transmitting a random access message 2 (random access response). PDSCH is used at least for transmitting system information including parameters used for initial access.

  The above-mentioned BCH, UL-SCH and DL-SCH are transport channels. A channel used in a medium access control (MAC: Medium Access Control) layer is called a transport channel. The unit of the transport channel used in the MAC layer is also called a transport block 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 may exchange (transmit and receive) signals in an upper layer (higher layer). For example, the base station apparatus 3 and the terminal apparatus 1 have RRC signaling (RRC message: Radio Resource Control) in a radio resource control (RRC: Radio Resource Control) layer.
message, RRC information: Radio Resource
(Also referred to as Control information) may be transmitted and received. In addition, the base station apparatus 3 and the terminal apparatus 1 may transmit and receive MAC CE (Medium Access Control Element) in the MAC layer. Here, the RRC signaling and / or the MAC CE are used for higher layer signaling (higher layer).
Also referred to as layer signalling).

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

  The configuration of the radio frame of this embodiment will be described below.

  FIG. 2 is a diagram showing a schematic configuration of a radio frame in this embodiment. In FIG. 2, the horizontal axis is the time axis. Each of the radio frames may be 10 ms long. Also, each of the radio frames may be composed of 10 slots. Each of the slots may be 1 ms long.

Hereinafter, an example of the configuration of the slot of this embodiment will be described. FIG. 3 is a diagram showing a schematic configuration of an uplink slot in this embodiment. FIG. 3 shows the configuration of the uplink slot in one cell. In FIG. 3, the horizontal axis is the time axis and the vertical axis is the frequency axis. The uplink slot may include N ^UL _symb SC-FDMA symbols. The uplink slot may include N ^UL _symb OFDM symbols. The present embodiment will be described below using a case where the uplink slot includes an OFDM symbol, but the present embodiment can also be applied to a case where the uplink slot includes an SC-FDMA symbol.

  In FIG. 3, l is the OFDM symbol number / index and k is the subcarrier number / index. The physical signal or channel transmitted in each of the slots is represented by a resource grid. In the uplink, the resource grid is defined by multiple subcarriers and multiple OFDM symbols. Each of the elements in the resource grid is called a resource element. The resource element is represented by subcarrier number / index k and OFDM symbol number / index l.

The uplink slot may include a plurality of OFDM symbols l (l = 0, 1, ..., N ^UL _symb −1) in the time domain. In one uplink slot, N ^UL _symb may be 7 or 14 for a normal CP (normal Cyclic Prefix) in the ^uplink . N ^UL _symb may be 6 or 12 for an extended CP (extended Cyclic Prefix) in the ^uplink .

  The terminal device 1 receives an upper layer parameter UL-CyclicPrefixLength indicating the CP length in the uplink from the base station device 3. The base station apparatus 3 may broadcast the system information including the upper layer parameter UL-CyclicPrefixLength corresponding to the cell in the cell.

The uplink slot may include a plurality of subcarriers k (k = 0, 1, ..., N ^UL _RB · N ^RB _SC −1) in the frequency domain. N ^UL _RB is an uplink bandwidth setting for the serving cell and is represented by a multiple of N ^RB _SC . N ^RB _SC is the (physical) resource block size in the frequency domain, expressed by the number of subcarriers. The subcarrier spacing Δf may be 15 kHz. N ^RB _SC is 12
It may be. The (physical) resource block size in the frequency domain may be 180 kHz.

One physical resource block is N ^UL _symb consecutive OFDM in the time domain.
It is defined by symbols and N ^RB _SC consecutive subcarriers in the frequency domain. Therefore, one physical resource block is composed of (N ^UL _symb · N ^RB _SC ) resource elements. One physical resource block may correspond to one slot in the time domain. In the frequency domain, the physical resource blocks may be assigned numbers n _PRB (0, 1, ..., N ^UL _RB −1) in order from the lowest frequency.

  The downlink slot in this embodiment includes a plurality of OFDM symbols. The downlink slot configuration in this embodiment is basically the same as the uplink configuration, and thus the description of the downlink slot configuration is omitted.

  The configuration of the device according to this embodiment will be described below.

FIG. 4 is a schematic block diagram showing the configuration of the terminal device 1 of this 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 an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The upper layer processing unit 14 includes a medium access control layer processing unit 15 and a radio resource control layer processing unit 16. The wireless transmission / reception unit 10 is also referred to as a transmission unit, a reception unit, an encoding unit, a decoding unit, or a physical layer processing unit.

The upper layer processing unit 14 outputs the uplink data (transport block) generated by a user's operation or the like to the wireless transmission / reception unit 10. The upper layer processing unit 14 includes a medium access control (MAC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (Radio). Resource Control (RRC) layer processing.

  The medium access control layer processing unit 15 included in the upper layer processing unit 14 processes the medium access control layer. The medium access control layer processing unit 15 controls the random access procedure based on various setting information / parameters managed by the wireless resource control layer processing unit 16.

  The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing of the radio resource control 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 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 signal (physical channel and / or physical signal) received from the base station device 3, and outputs the decoded information to the upper layer processing unit 14. The wireless transmission / reception unit 10 generates a transmission signal (physical channel and / or physical signal) by modulating and encoding data, and transmits the transmission 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) 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 from an analog signal to a digital signal. The baseband unit 13 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT) on the signal from which the CP 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 SC-FDMA symbol, adds a CP to the generated SC-FDMA symbol, and outputs a baseband digital signal. Generate and convert baseband digital signals to analog signals. 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, up-converts the analog signal into a carrier frequency, and transmits the analog signal 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.

  FIG. 5 is a schematic block diagram showing the configuration of the base station device 3 of this 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, an encoding unit, a decoding unit, or a physical layer processing unit.

  The upper layer processing unit 34 includes a medium access control (MAC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (Radio). Resource Control (RRC) layer processing.

  The medium access control layer processing unit 35 included in the upper layer processing unit 34 performs processing of the medium access control layer. The medium access control layer processing unit 35 controls the random access procedure based on various setting information / parameters managed by the wireless resource control layer processing unit 36.

  The radio resource control layer processing unit 36 included in the upper layer processing unit 34 performs processing of the radio resource control layer. The radio resource control layer processing unit 36 generates downlink data (transport block), system information, RRC message, MAC CE, or the like arranged in the physical downlink shared channel, or acquires the data from a higher-level node to perform wireless transmission / reception. Output to the 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 an upper layer signal. That is, the radio resource control layer processing unit 36 transmits / notifies information indicating various setting information / parameters.

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

  Each of the units denoted by reference numerals 10 to 16 included 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. Each of the units denoted by reference numerals 10 to 16 included in the terminal device 1 may be configured as at least one processor and a memory connected to the at least one processor. Each of the units denoted by reference numerals 30 to 36 included in the base station device 3 may be configured as at least one processor and a memory connected to the at least one processor.

The wireless communication system of the present embodiment may be applied with TDD (Time Division Duplex) and / or FDD (Frequency Division Duplex). In the case of cell aggregation, the serving cell to which TDD is applied and the serving cell to which FDD is applied may be aggregated.

The upper layer signal is an RMSI (Remaining Minimum System).
Information), OSI (Other System Information), SIB (System Information Block), RRC message, or MAC CE. In addition, upper layer parameters (higher
“Layer parameter” may mean a parameter or information element included in an upper layer signal.

  The UCI transmitted on PUSCH may include HARQ-ACK and / or CSI.

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

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

  The SPS (Semi-Persistent Scheduling) PDSCH may be a PDSCH that is semi-statically scheduled in the terminal device 1.

If the CRC in DCI format is scrambled with CS-RNTI given by the upper layer parameter cs-RNTI, and the new data indicator field of the transport block is set to 0, scheduling activation is performed. ) Or scheduling release, the terminal device 1 validates the downlink SPS assignment PDCCH (DL SPS assignment PDCCH) or the uplink grant type 2 PDCCH (UL grant Type 2 PDCCH). The scheduling activation is performed by the activation and the HARQ process number (HARQ process number) included in the DCI format.
ber), at least based on a redundancy version (redundancy version). The scheduling release includes at least a HARQ process number, a redundancy version, a modulation and coding scheme, and a resource block assignment included in the activation and DCI format. It may be carried out based on.

  HARQ-ACK information may include ACK or NACK. For example, when the terminal device 1 correctly receives the PDSCH, the terminal device 1 may set ACK in the HARQ-ACK information. Moreover, when the terminal device 1 fails to receive the PDSCH, the terminal device 1 may set NACK in the HARQ-ACK information. Failure to receive the PDSCH may mean that an error has occurred in the decoding process, or it may mean that the PDSCH physical signal could not be received.

  The terminal device 1 uses the DCI format 1_0 or the HARQ-ACK information of the slot not indicated by the value of the PDSCH-to-HARQ feedback timing indicator field (PDSCH-to-HARQ_feedback indicator indicator field) included in the DCI format 1_1 as NACK. You may report to the base station apparatus 3.

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

  When the terminal device 1 transmits the HARQ-ACK information of PDSCH received in a certain slot in a slot other than n + k, the terminal device 1 may set the HARQ-ACK information corresponding to the PDSCH to NACK. That is, the terminal device 1 may set the value of the codebook corresponding to the HARQ-ACK information transmitted in slots other than n + k in the codebook transmitted in n + k slots to NACK.

Activation in the serving cell c is downlink BWP (DL BWP: Downlink Bandwidth Part ), and / or, uplink BWP: In (UL BWP Uplink Bandwidth Part), the terminal apparatus 1 _{M A} of PDSCH reception _{Candidate, c} occasions You may decide the set. The M _{A, c} occasion may be the maximum number of bits of HARQ-ACK information transmitted on one PUCCH.

When the serving cell c is deactivated, the terminal device 1 sets the downlink BWP given by the upper layer parameter firstActiveDownlinkBWP to the activated downlink BW for determining the set of MA _{, c} occasions of PDSCH reception candidates.
It may be used as P.

The decision of the set of MA _{, c} occasions of PDSCH reception candidates is made by determining the set of slot timing value K ₁ associated with the uplink BWP, the default PDSCH time domain resource allocation, the upper layer parameter PDSCH-TimeDomainResourceAllocationList, the upper layer. It may be based at least on the parameter TDD-UL-DL-ConfigurationCommon and / or the upper layer parameter TDD-UL-DL-ConfigDedicated.

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

FIG. 6 is a diagram showing an example of default PDSCH time domain resource allocation in the present embodiment. Default PDSCH time domain resource allocation is given based on at least dmrs-TypeA-Position, PDSCH mapping type, number of slots K ₀ between PDCCH and PDSCH scheduled by the PDCCH, start OFDM symbol S of PDSCH, and number of OFDM symbols L of PDSCH. You may be asked.

The PDSCH time domain resource allocation configured by the upper layer parameter PDSCH-TimeDomainResourceAllocationList includes a PDSCH mapping type, the number of slots K ₀ between the PDCCH and the PDSCH scheduled by the PDCCH, a start OFDM symbol of the PDSCH, and / or an OFDM symbol of the PDSCH. It may be given based at least on the number.

The determination of the MA _{, c} occasion of the PDSCH reception candidate is determined by the PDSCH time domain resource allocation configured by the upper layer parameter PDSCH-TimeDomainResourceAllocationList, the default PDSCH time domain resource allocation, or the upper layer parameter PDSCH-TimeDomainResourceAllocationList. It may be based at least on the union of PDSCH time domain resource allocation and default PDSCH time domain resource allocation.

  The PDSCH time domain resource allocation configured by the upper layer parameter PDSCH-TimeDomainResourceAllocationList is called a time domain resource allocation table. Alternatively, the default PDSCH time domain resource allocation is referred to as a time domain resource allocation table. Alternatively, the union of the PDSCH time domain resource allocation configured by the upper layer parameter PDSCH-TimeDomainResourceAllocationList and the default PDSCH time domain resource allocation is referred to as a time domain resource allocation table.

FIG. 7 is a diagram showing an example of a procedure for determining a set of MA _{, c} occasions of PDSCH reception candidates in the present embodiment. The number of bits of the HARQ-ACK information transmitted by the terminal device 1 may be determined by this procedure.

The (700) PDSCH reception candidate and / or the occasion index j for the SPS PDSCH release is set to 0, and the process proceeds to 701.
(701) Set B, which stores PDSCH reception candidates, is set to an empty set, and the process proceeds to 702.
(702) Set M _{A, c} to the empty set and proceed to 703.
(703) the number of slot timing value _{K 1} in the set of _{K 1} and (Cardinality) is set to C _{(K 1),} the processing proceeds to 704.
(704) the index k of the slot timing value _{K 1} in the set of _{K 1} is set to 0, the process proceeds to 705. Here, the values of K ₁ may be arranged in descending order for each serving cell. For example, if the set of K ₁ is (5, 6, 7), the value of K ₁ indicated by k = 0 may be 5.

(705) if the index k of _{K 1} is C _{(K 1)} is smaller than, the processing proceeds to 706. Index k K ₁ is greater than C _{(K 1),} or, if the same, the process proceeds to 741.
(706) Set all rows in the time domain resource allocation table to R, and proceed to 707.
(707) The number of elements (Cardinality) of R is set to C (R), and the processing proceeds to 708.
(708) Set the index r of the row of R to 0, and proceed to 709.
(709) The slot n is the same slot as or a slot after the activated downlink BWP or the activated uplink BWP in the serving cell c is switched, and the slots n-K _{1, k} are activated. If the slot is before the slot for switching the downlink BWP or the activated uplink BWP, 710 is executed. When the condition of 709 is not satisfied, 710 is not executed and the process proceeds to 711.

If the condition of (711) 709 is not satisfied, the process proceeds to 712.
(712) If the index r of R is smaller than C (R), the process proceeds to 713. If the index r of R is greater than or equal to C (R), proceed to 717.
(713) the upper layer parameters to the terminal apparatus 1 TDD-UL-DL-ConfigurationCommon or, given TDD-UL-DL-ConfigDedicated, and, slots _{n-K 1} from the slot ^{_{n-K 1, k -N PDSCH}} repeat _{, K} , if at least one symbol of the PDSCH time domain resource derived by row r is configured in the uplink, then remove row r from (714) R and proceed to 715. If the condition of 713 is not satisfied, the process proceeds to 715.
(715) Terminate the conditional statement of 713 and proceed to 716.
(716) Increment r by 1, and proceed to 717.
(717) If the index r of R is smaller than C (R), the process proceeds to 713. If the index r of R is greater than or equal to C (R), proceed to 718.

(718) When the terminal device 1 does not notify the capability (Capability) of receiving two or more PDSCHs in one slot, and R is not empty, (719) the terminal device 1 has M _{A, c} and K ₁ Save the union of the indices k in M _{A, c} and proceed to 738. Further, when the terminal device 1 does not notify the ability (Capability) of receiving two or more PDSCHs in one slot and R is not empty, (720) the terminal device 1 uses the PDSCH and the SPS PDSCH in one slot. You do not have to expect to receive releases at the same time.
If the condition of (721) 718 is not satisfied, the process proceeds to 722.

(722) The number of elements (Cardinality) of R is set to C (R), and the processing proceeds to 723.
(723) Set the smallest last OFDM symbol index among PDSCH reception candidates R to m, and proceed to 724. Here, the PDSCH reception candidate may be determined by the start and the length instruction value (SLIV) included in each row of R. Further, when the terminal device 1 is scheduled to receive the PDSCH by DCI, Time Domain included in the DCI is scheduled.
The SLIV may be determined based at least on the value of the n Resource assignment field.

(724) If R is not empty, proceed to 725. If R is empty, proceed to 738.
(725) Set r to 0 and proceed to 726.
(726) If the index r of R is smaller than C (R), the process proceeds to 727. If the index r of R is greater than or equal to C (R), proceed to 734.
If the OFDM start symbol index S of the PDSCH reception candidate in (727) row r is smaller than m determined in (723), j is stored in (728) _{br, k} and row r is excluded from (729) R. , (730) B stores the union of B and b _{r, k} , and proceeds to 731. Here, b _{r, k} may be a set of occasion indexes j for PDSCH reception candidates r in K _{1, k} .
The conditional sentence of (731) 727 is ended, and the processing proceeds to 732.
(732) Increment r by 1, and proceed to 733.
(733) If the index r of R is smaller than C (R), the process proceeds to 727. If the index r of R is greater than or equal to C (R), proceed to 734.
_{(734) M A,} and save the union of _{M A, c} and j to _c, proceed to 735.
(735) Increment j by 1, and proceed to 736.
(736) Set the smallest last OFDM symbol index among the PDSCH reception candidates R to m, and proceed to 737.
(737) If R is not empty, proceed to 725. If R is empty, proceed to 738.
(738) Terminate the conditional statements 718 and / or 721 and proceed to 739.
(739) Increment k by 1 and proceed to 740.
The conditional statement of (740) 709 and / or 711 is ended, and the processing proceeds to 741.
(741) if the index k of _{K 1} is C _{(K 1)} is smaller than, the processing proceeds to 706. Index k K ₁ is greater than C _{(K 1),} or, if the same, and ends the procedure.

M _{A, c} determined by the procedure shown in FIG. 7 may be the number of HARQ-ACK bits transmitted by the terminal device 1.

In PDSCH reception candidate occasions corresponding to one or more rows of R in which b _{r, k} included in B have the same value, the terminal device 1 does not expect to receive two or more PDSCHs in the same slot. May be.

  The PDSCH reception candidate may be a candidate capable of PDSCH reception indicated by SLIV. The number of PDSCHs actually received by the terminal device 1 in one slot may be the same as or smaller than the number of PDSCH reception candidates.

The terminal device 1 receives the SPS PDSCH, the SPS PDSCH release, or the PDSCH scheduled by the DCI format 1_0, and the terminal device 1 is configured as one serving cell, and M _{A, c} is 1. Further, when the upper layer parameter PDSCH-CodeBlockGroupTransmission is given to the terminal device 1, the terminal device 1 may generate HARQ-ACK information only for the transport block in the PDSCH or only for the SPS PDSCH release.

The terminal device 1 receives the SPS PDSCH, the SPS PDSCH release, or the PDSCH scheduled by the DCI format 1_0, the terminal device 1 is configured in two or more serving cells, and M _{A, c} is 2 Above, and when the upper layer parameter PDSCH-CodeBlockGroupTransmission is given to the terminal device 1, the terminal device 1 transmits the transport block in the PDSCH or the HARQ-ACK information of the SPS PDSCH release to N _HARQ-ACK ^{CBG /} You may repeat ^{TB, max} times. Here, N _HARQ-ACK ^{CBG / TB, max} may be given by the upper layer parameter maxCodeBlockGroupsPerTransportBlock.

  When the upper layer parameter dl-DataToUL-ACK is given to the terminal device 1, the terminal device 1 activates the serving cell corresponding to the slot timing value (1, 2, 3, 4, 5, 6, 7, 8). It may not be expected to indicate in the DCI format 1_0 a slot timing value that does not belong to the product set of slot timing values given by the upper layer parameter dl-DataToUL-ACK for the downlink BWP. For example, when the value of dl-DataToUL-ACK is (1, 3, 5, 7), the terminal device 1 is instructed by the DCI format 1_0 to have any of the slot timing values (2, 4, 6, 8). You don't have to expect that.

  The occasion of the PDSCH reception candidate corresponds to the PDCCH including the DCI format 1_1, and the upper layer parameter maxNrafCodeWordsScheduledByDCI instructs reception of two transport blocks, and the terminal device 1 receives the PDSCH including one transport block. And, if the upper layer parameter harq-ACK-SpatialBundlingPUCCH is not given to the terminal device 1, the HARQ-ACK information of the PDSCH is associated with the first transport block, and the terminal device 1 has the second NACKs may be generated for transport blocks.

  The occasion of the PDSCH reception candidate corresponds to the PDCCH including the DCI format 1_1, and the upper layer parameter maxNrafCodeWordsScheduledByDCI instructs reception of two transport blocks, and the terminal device 1 receives the PDSCH including one transport block. And, when the upper layer parameter harq-ACK-SpatialBundlingPUCCH is given to the terminal device 1, the terminal device 1 regards the HARQ-ACK information for the second transport block as ACK and generates the HARQ-ACK information of the PDSCH. May be.

The terminal device 1 uses o ₀ ^ACK , o ₁ ^ACK , .. of the HARQ-ACK codebook transmitted on the PUCCH. ． ． The HARQ-ACK information bits _{o ^{OACK-1 ACK} O} ^ACK bit may be based at least on determined to the procedure shown in FIG. If the terminal device 1 cannot receive the transport block or the code block group (CBG) included in the PDSCH due to the non-detection of the DCI format 1_0 or the DCI format 1_1 for scheduling the PDSCH, the terminal device 1 determines the transport block or the CBG. And generates HARQ-ACK information for NACK as NACK.

The number of elements (cardinality) of M _{A, c} is defined as the total number M _c of PDSCH reception or SPS PDSCH release occasions of the serving cell c corresponding to the HARQ-ACK information bits. That is, M _c may be the number of elements of M _{A, c} . Further, M _c may be a codebook size of HARQ-ACK information.

FIG. 8 is a diagram showing an example procedure of determining HARQ-ACK information bits of the HARQ-ACK codebook transmitted by the terminal device 1 on the PUCCH in the present embodiment. By this procedure, the HARQ-ACK information bit corresponding to M _{A, c} determined by the procedure of FIG. 7 may be determined.

(800) Set the serving cell index c to 0 and proceed to 801.
(801) Set the index j of the HARQ-ACK information bit to 0, and proceed to 802.
(802) Set the number of serving _cells configured in the terminal device 1 to N _cells ^DL, and proceed to 803.
(803) If c is smaller than N _cells ^DL , proceed to 804. If c is greater than or equal to N _cells ^DL , terminate the procedure.
(804) The PDSCH reception candidate or the occasion index m of the SPS PDSCH release is set to 0, and the process proceeds to 805.

(805) If the index m is smaller than M _c , proceed to 806. If index m is greater than or equal to M _c , go to 831.
(806) The upper layer parameter harq-ACK-SpatialBundlingPUCCH is not given to the terminal device 1, the upper layer parameter PDSCH-CodeBlockGroupTransmission is not given to the terminal device 1, and the terminal device 1 has activated the serving cell c. When configured in the upper layer parameter maxNrofCodeWordsScheduledByDCI that indicates reception of two transport blocks in the downlink BWP, (807) o _j ^ACK stores HARQ-ACK information bits corresponding to the first transport block of the cell. Then, after incrementing (808) j by one, HARQ-ACK corresponding to the second transport block of the cell is ^added to (809) o _j ACK. The information bit is saved, (810) j is incremented by 1, and the process proceeds to 828. If the condition of 806 is not satisfied, the processing proceeds to 811.

(811) The upper layer parameter “harq-ACK-SpatialBundlingPUCCH” is given to the terminal device 1, and the upper layer parameter maxNrafCodeWordsScheduledByDCI that instructs the terminal device 1 to receive two transport blocks in the activated downlink BWP of the serving cell c. , The HARQ-ACK information bits corresponding to the first transport block and the second transport block of the cell are subjected to binary AND operation (812), and the result is o _j Save in ^ACK , increment (813) j by 1 and proceed to 828. If the condition of 811 is not satisfied, the process proceeds to 814. Here, the result of the binary AND operation is 1 only when all the input bits of the binary AND operation are 1. The result of a binary AND operation is 0 if the input bits of the binary AND operation are not all ones. For example, if the HARQ-ACK information bit corresponding to the first transport block is 1 and the HARQ-ACK information bit corresponding to the second transport block is 1, it corresponds to the first transport block. The result of the binary AND operation of the HARQ-ACK information bits and the HARQ-ACK information bits corresponding to the second transport block is 1.

(811) The upper layer parameter “harq-ACK-SpatialBundlingPUCCH” is given to the terminal device 1, and the upper layer parameter maxNrafCodeWordsScheduledByDCI that instructs the terminal device 1 to receive two transport blocks in the activated downlink BWP of the serving cell c. And the terminal device 1 receives one transport block, (812) the HARQ-ACK information bit corresponding to the second transport block is set to ACK, and then the first , And the HARQ-ACK information bits corresponding to the second transport block are subjected to a binary AND operation (binary AND operation), and the result is converted into o _j ^ACK . Save, increment j by one, and proceed to 828. If the condition of 811 is not satisfied, the process proceeds to 814.

(814) When the upper layer parameter PDSCH-CodeBlockGroupTransmission is given to the terminal device 1 and N _{HARQ-ACK, c} ^{CBG / TB, max} CBG are given by the upper layer parameter maxCodeBlockGroupsPerTransportBlock in the serving cell c, the process proceeds to 815. If the condition of 814 is not satisfied, the process proceeds to 825. Here, N _{HARQ-ACK, c} ^{CBG / TB, max} may be the maximum number of CBGs in one transport block in the serving cell c.
(815) Set n _CBG of the CBG index to 0, and proceed to 816.
(816) N _{HARQ-ACK, c} Set ^{CBG / TB, max} to n _max , and proceed to 817.
(817) If n _CBG is smaller than N _{HARQ-ACK, c} ^{CBG / TB, max} , go to 818. If n _CBG is greater than or equal to N _{HARQ-ACK, c} ^{CBG / TB, max} , go to 824.
(818) The HARQ-ACK information bits corresponding to the n _{CBG CBGs of} the first transport block are stored in o _{j + nCBG} ^ACK , and the process proceeds to 819.
(819) When the terminal device 1 is configured to receive two transport blocks in the downlink BWP of the serving cell c with the upper layer parameter maxNrafCodeWordsScheduledByDCI, (820) supports n _CBG CBGs of the second transport. The HARQ-ACK information bit to be performed is stored in o _{j + nCBG + nmax} ^ACK , the conditional statement of (821) 819 is terminated, and the process proceeds to 822. If the condition of 819 is not satisfied, the process proceeds to 822.
(822) n _CBG is incremented by 1, and the process proceeds to 823.
(823) If n _CBG is smaller than N _{HARQ-ACK, c} ^{CBG / TB, max} , go to 818. If n _CBG is greater than or equal to N _{HARQ-ACK, c} ^{CBG / TB, max} , go to 824.
(824) j + N _{TB, c} ^DL · N _{HARQ-ACK, c} ^{CBG / TB, max} are stored in j, and the process proceeds to 828.
(825) If the conditions of 806, 811, and / or 814 are not met, proceed to 826.
(826) The HARQ-ACK information bit in the serving cell c is stored in the o _j ^ACK , and the process proceeds to 827.
(827) Increment j by 1 and proceed to 828.
(828) Terminate the conditional statements 806, 811, 814, and / or 825 and proceed to 829.
(829) Increment m by 1, and proceed to 830.
(830) If the index m is smaller than M _c , proceed to 806. If index m is greater than or equal to M _c , go to 831.
(831) c is incremented by 1, and the process proceeds to 832.
If (832) c is smaller than N _cells ^DL , proceed to 804. If c is greater than or equal to N _cells ^DL , terminate the procedure.

  The index j in FIG. 7 may be the same as the index m in FIG.

FIG. 9 is a diagram showing an example of determining the HARQ-ACK codebook size corresponding to the PDSCH in this embodiment. The PDSCH 900, PDSCH 901, PDSCH 902, PDSCH 903, PDSCH 904, PDSCH 905, PDSCH 906 and PDSCH 907 may be PDSCH reception candidates. The PDSCH reception may be performed by one or more PDSCH reception candidates. In FIG. 9, since C (R) in slot n−K _{1, k} is 8, the loop of 726 is executed 8 times. In the loop of 726 of slots n−K _{1, k} in FIG. 9, the first time, the second time, and the third time
Since the loop for the second time is based on the last OFDM symbol of PDSCH 900, PDSCH 900 and / or PDSCH 901 and / or PDSCH 902 may have the same value of j. That is, b _{0, k} = 0, b _{1, k} = 0, b _{2, k} = 0. Further, in the loop of slot n-K _{1, k} 726 in FIG. 9, since the fourth, fifth, and sixth loops are based on the last OFDM symbol of PDSCH 903, PDSCH 903, and The PDSCH 904 and / or the PDSCH 905 may have the same value of j. That is, b3 _{, k} = 1, b4 _{, k} = 1, b5 _{, k} = 1 may be used. Further, in the loop of 726 of slots n−K _{1 and k} in FIG. 9, since the seventh and eighth loops are based on the last OFDM symbol of PDSCH 906, PDSCH 906 and / or PDSCH 907 May have the same value of j. That is, b _{6, k} = 2, b _{7, k} = 2 may be used. In slot n−K _{1, k} in FIG. 9, M _c may be 3.

FIG. 10 is a diagram showing an example of determining the HARQ-ACK codebook size corresponding to PDSCH and SPS PDSCH release in the present embodiment. When the terminal device 1 receives the PDCCH including the SPS PDSCH release in a certain slot, the terminal device 1 transmits HARQ-ACK information corresponding to the SPS PDSCH release in at least Time Domain Resource assignment included in the DCI format including the SPS PDSCH release. It may be transmitted by replacing it with HARQ-ACK which is a PDSCH reception candidate indicated by SLIV derived based on this. For example, in FIG. 10, when the SLIV derived based on at least the Time Domain Resource assignment included in the DCI format including the SPS PDSCH release 1008 indicates the PDSCH 905 that is the PDSCH reception candidate, the SPS is performed using the HARQ-ACK corresponding to the PDSCH 905. HARQ-ACK information of PDSCH Release 1008 may be transmitted. For example, when the SLIV derived based on at least the Time Domain Resource assignment included in the DCI format including the SPS PDSCH release 1008 in FIG. 10 indicates the PDSCH 905 that is the PDSCH reception candidate, the SPS PDSCH release is sent to the o _j ^ACK corresponding to the PDSCH 905. 1008 HARQ-ACK information bits may be stored. The PDSCH reception candidate indicated by the SLIV may be included in the slot in which the SPS PDSCH release is received, or may be included in a different slot. That is, the slot of the PDSCH reception candidate indicated by the SLIV may be given based at least on the Time Domain Resource assignment included in the DCI format including the SPS PDSCH release.

  M in FIGS. 9 and 10 may be the last OFDM symbol index shown at 723 and / or 736.

The SLIV derived based at least on the Time Domain Resource assignment included in the DCI format including the SPS PDSCH release is also referred to as SPS SLIV. The terminal device 1 does not have to expect to receive the PDSCH in the PDSCH reception candidate having the same value of b _{r, k} as the PDSCH reception candidate indicated by the SPS SLIV. For example, when SPS SLIV indicates PDSCH 905 as a PDSCH reception candidate in FIG. 10, the terminal device 1 does not expect to receive PDSCH 903, PDSCH 904, and PDSCH 905 having the same values of b _{r and k} as PDSCH 905. May be.

The terminal device 1 does not have to expect to receive the PDSCH in the PDSCH reception candidate having the same value of b _{r, k} as the PDSCH reception candidate indicated by the SPS PDSCH release. For example, when the SPS PDSCH release 1008 indicates the PDSCH 905 that is a PDSCH reception candidate in FIG. 10, the terminal device 1 expects to receive PDSCH 903, PDSCH 904, and PDSCH 905 having the same b _{r, k} values as the PDSCH 905. You don't have to.

The terminal device 1 does not have to expect to select a PDSCH reception candidate in which the SPS SLIV has the same value of b _{r, k as} the PDSCH reception candidate in the PDSCH reception candidate that receives the PDSCH. For example, in FIG. 10, when PDSCH reception is performed on the PDSCH reception candidate PDSCH 902, the terminal device 1 selects the PDSCH 900, PDSCH 901, and / or PDSCH 902 in which the SPS SLIV has the same b _{r, k} values as the PDSCH 902. You don't have to expect to show.

  The terminal device 1 receives the PDCCH including the SPS PDSCH release in a certain slot, and one or more PDSCH reception candidates in the slot given at least based on the Time Domain Resource assignment included in the DCI format including the SPS PDSCH release. If there is, the start and / or the last OFDM symbol corresponding to the PDSCH reception candidate, the number of OFDM symbols corresponding to the PDSCH reception candidate, the table index corresponding to the PDSCH reception candidate, based on at least the one or more Of the PDSCH reception candidates, PDSCH reception candidates corresponding to the SPS PDCCH release may be given.

For example, in a slot given based on at least Time Domain Resource assignment included in the DCI format including SPS PDSCH release, the terminal device 1 starts HARQ-ACK information corresponding to SPS PDSCH release, and the PDSCH reception candidate whose OFDM symbol is latest is the slowest. It may be transmitted by replacing it with the corresponding HARQ-ACK. For example, in a slot given based at least on Time Domain Resource assignment included in the DCI format including SPS PDSCH release, the PDSCH reception candidate whose start OFDM symbol is latest is the HARQ-ACK information bit of SPS PDSCH release corresponding to o _j ^ACK. May be saved.

In the slot given based on at least Time Domain Resource assignment included in the DCI format including the SPS PDSCH release, when there are a plurality of PDSCH reception candidates with the latest start OFDM symbol, the terminal device 1 corresponds to the HARQ- corresponding to the SPS PDSCH release. The ACK information may be replaced with the HARQ-ACK of the PDSCH reception candidate having the smallest number of OFDM symbols and transmitted. For example, in the slot given based on at least Time Domain Resource assignment included in the DCI format including SPS PDSCH release, when there are a plurality of PDSCH reception candidates with the slowest start OFDM symbol, the PDSCH reception candidates with the smallest number of OFDM symbols May store the HARQ-ACK information bit of the SPS PDSCH release in the corresponding o _j ^ACK .

In the slot given based at least on the Time Domain Resource assignment included in the DCI format including the SPS PDSCH release, when the start OFDM symbol is the latest and there are a plurality of PDSCH reception candidates having the same OFDM symbol length, The terminal device 1 may replace the HARQ-ACK information corresponding to the SPS PDSCH release with the HARQ-ACK of the PDSCH reception candidate having the smallest index in the table defining the PDSCH reception candidates. For example, in a slot given based at least on Time Domain Resource assignment included in the DCI format including SPS PDSCH release, there are a plurality of PDSCH reception candidates in which the start OFDM symbol is the latest and the OFDM symbol length is the same. In this case, the HARQ-ACK information bit of the SPS PDSCH release may be stored in the o _j ^ACK corresponding to the PDSCH reception candidate having the smallest index in the table defining the PDSCH reception candidate.

  Hereinafter, various aspects of the terminal device 1 and the base station device 3 in the present embodiment will be described.

(1) A first aspect of the present embodiment is a terminal device, a processing unit that generates HARQ-ACK information corresponding to PDSCH, and a PDSCH reception candidate b _r associated with an SPS PDSCH release in a certain slot. _{, K} having the same value as b _{r, k} , and a receiving unit that receives PDSCH with each of some or all of the PDSCH reception candidates excluding one or more PDSCH candidates with _k .

(2) A second aspect of the present embodiment is a base station apparatus, comprising: a transmitter that transmits PDSCH, and a receiver that receives HARQ-ACK information corresponding to the PDSCH, and the transmitter. Schedules PDSCH on some or all of the PDSCH reception candidates in one slot except for one or more PDSCH candidates of b _{r, k} having the same value as b _{r, k} of the PDSCH reception candidates to which the SPS PDSCH release is related To do.

  As a result, the terminal device 1 and the base station device 3 can efficiently communicate with each other.

A program that operates in the base station device 3 and the terminal device 1 according to the present invention is a program that controls a CPU (Central Processing Unit) or the like (makes a computer function so as to realize the functions of the above-described embodiments according to the present invention. Program). Information handled by these devices is temporarily stored in a RAM (Random Access Memory) during the processing, and thereafter, various ROMs such as a Flash ROM (Read Only Memory) and an HD.
The data is stored in a D (Hard Disk Drive), and is read, modified, and written by the CPU as needed.

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

  Further, the base station device 3 in the above-described embodiment can also be realized as an aggregate (device group) composed of a plurality of devices. Each of the devices forming the device group may include some or all of the functions or function blocks of the base station device 3 according to the above-described embodiment. It suffices for the device group to have one type of each function 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.

  Moreover, the base station apparatus 3 in the above-described embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network). Moreover, the base station apparatus 3 in the above-mentioned embodiment may have a part or all of the functions of the upper node with respect to the eNodeB.

  In addition, 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 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 due to the progress of semiconductor technology, it is 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 without departing from the scope 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. In addition, a configuration in which the elements described in each of the above-described embodiments and having the same effect are replaced with each other is also included.

1 (1A, 1B, 1C) Terminal device 3 Base station device 10 Radio transmission / reception unit 11 Antenna unit 12 RF unit 13 Baseband unit 14 Upper layer processing unit 15 Medium access control layer processing unit 16 Radio resource control layer processing unit 30 Radio transmission / reception Unit 31 antenna unit 32 RF unit 33 baseband unit 34 upper layer processing unit 35 medium access control layer processing unit 36 radio resource control layer processing unit

Claims (4)

A processing unit for generating HARQ-ACK information corresponding to PDSCH;
In one slot, receives the PDSCH in each part or all of the PDSCH reception candidate excluding _{b r,} 1 or more PDSCH candidate _k of _{b r,} equal to the _k of PDSCH receiving candidates SPS PDSCH release relevant A terminal unit including: A transmission unit for transmitting PDSCH,
A receiving unit for receiving HARQ-ACK information corresponding to the PDSCH,
The transmitting unit may, in a certain slot, select a part or all of PDSCH reception candidates excluding one or more PDSCH candidates of b _{r, k} having the same value as b _{r, k} of PDSCH reception candidates related to SPS PDSCH release. A base station device that schedules PDSCH. A communication method used for a terminal device,
Generate HARQ-ACK information corresponding to PDSCH,
In one slot, receives the PDSCH in each part or all of the PDSCH reception candidate excluding _{b r,} 1 or more PDSCH candidate _k of _{b r,} equal to the _k of PDSCH receiving candidates SPS PDSCH release relevant Communication method to do. A communication method used for a base station device, comprising:
Send PDSCH,
Receiving HARQ-ACK information corresponding to the PDSCH,
A communication that schedules PDSCH for some or all PDSCH reception candidates in one slot except for one or more PDSCH candidates of b _{r, k} having the same value as b _{r, k} of PDSCH reception candidates related to SPS PDSCH release Method.

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