Patent Description:
A radio access method and a radio network for cellular mobile communications (hereinafter referred to as "Long Term Evolution (LTE: a registered trademark)", or "Evolved Universal Terrestrial Radio Access (EUTRA)") are being studied in the 3rd Generation Partnership Project (3GPP) (Non Patent Literature <NUM>, <NUM>, <NUM>, <NUM>, and <NUM>). In addition, a new radio access method (hereinafter referred to as "New Radio (NR)") is being studied in 3GPP. In LTE, a base station apparatus is also referred to as an evolved NodeB (eNodeB). In NR, a base station apparatus is also referred to as a gNodeB. In LTE and NR, a terminal apparatus is also referred to as User Equipment (UE). LTE and NR are cellular communication systems in which multiple areas covered by a base station apparatus are deployed in a form of cells. A single base station apparatus may manage multiple cells.

A PDCCH, a PUSCH, and a PDSCH are used in downlink of NR (Non Patent Literature <NUM>, <NUM>, <NUM>, and <NUM>). A PDCCH is used to transmit Downlink Control Information (DCI). A DCI format 0_0 is used for scheduling of a PUSCH, and a DCI format 1_0 is used for scheduling of a PDSCH (Non Patent Literature <NUM>).

Dynamic scheduling and Semi-Persistent Scheduling (SPS) are supported in downlink of NR. In uplink of NR, dynamic scheduling and a configured grant are supported (Non Patent Literature <NUM> and <NUM>).

<CIT> describes an uplink signal transmission/receiving method and an apparatus therefor, and a downlink signal transmission/receiving method and an apparatus therefor. In a half duplex frequency division duplex (HD-FDD), when uplink transmission and downlink receipt are performed on the same subframe or neighboring subframes, a user equipment drops one of the uplink transmission and the downlink receipt according to a priority, and performs only transmission which is not dropped. The priority includes periodically unavailable resources, that is, aperiodic resources, taking priority over periodically available resources. If the uplink transmission is periodic, for example assigned in a semi-static manner or in a semi-persistent manner, and a downlink transmission is aperiodic, for example assigned dynamically, the user equipment drops the uplink transmission and performs the downlink receipt.

<NPL>, discusses PDSCH transmission for Rel-<NUM> low complexity UE.

The present invention provides a terminal apparatus, a communication method used by the terminal apparatus, a base station apparatus, and a communication method used by the base station apparatus. A terminal apparatus, a communication method used by the terminal apparatus, a base station apparatus, and a communication method used by the base station apparatus according to an aspect of the present invention include a method for transmission/reception of a PDSCH.

The above and other objects are achived by a terminal apparatus, a base station apparatus, a communication method for a terminal apparatus and a communication method for a base station apparatus as defined in the independent claims, respectively.

According to one aspect of the present invention, a terminal apparatus and a base station apparatus can efficiently perform communication.

An embodiment of the present invention will be described below.

<FIG> is a conceptual diagram of a radio communication system according to the present embodiment. In <FIG>, the radio communication system includes a terminal apparatus <NUM> and a base station apparatus <NUM>.

Hereinafter, carrier aggregation will be described.

According to the present embodiment, one or multiple serving cells are configured for the terminal apparatus <NUM>. A technology that allows the terminal apparatus <NUM> to perform communication via multiple serving cells is referred to as cell aggregation, carrier aggregation, or Dual Connectivity (DC). The present invention may be applied to each of the multiple serving cells configured for the terminal apparatus <NUM>. Furthermore, the present invention may be applied to some of the configured multiple serving cells. The multiple serving cells include at least one primary cell. The multiple serving cells may include one or multiple secondary cells. The present embodiment is applied to one serving cell, unless otherwise specified.

A primary cell is a serving cell in which an initial connection establishment procedure has been performed, a serving cell in which a connection re-establishment procedure has been initiated, or a cell indicated as a primary cell in a handover procedure. A secondary cell may be configured at a point in time when or after a Radio Resource Control (RRC) connection is established.

A carrier corresponding to a serving cell in downlink is referred to as a downlink component carrier. A carrier corresponding to a serving cell in uplink is referred to as an uplink component carrier. A downlink component carrier and an uplink component carrier are collectively referred to as component carriers.

The terminal apparatus <NUM> can perform simultaneous transmission/reception on multiple physical channels in multiple serving cells (component carriers). A single physical channel is transmitted in a single serving cell (component carrier) among multiple serving cells (component carriers).

Physical channels and physical signals according to the present embodiment will be described.

In uplink radio communication from the terminal apparatus <NUM> to the base station apparatus <NUM>, the following uplink physical channels are used. The uplink physical channels are used to transmit information output from a higher layer.

The PUCCH is used to transmit Channel State Information (CSI) of downlink and/or a Hybrid Automatic Repeat reQuest (HARQ-ACK). The CSI and HARQ-ACK are uplink control information (UCI). A HARQ-ACK is also referred to as an acknowledgement (ACK), a HARQ-ACK message, or a HARQ response.

The PUSCH is used to transmit uplink data (Transport block, Uplink-Shared Channel (UL-SCH)), the CSI of downlink, and/or the HARQ-ACK. The CSI and HARQ-ACK are uplink control information (UCI).

The PRACH is used to transmit a random access preamble.

The following uplink physical signal is used in uplink radio communication. Although the uplink physical signal is not used to transmit information output from a higher layer, it is used in the physical layer.

The DMRS is associated with transmission of the PUCCH or the PUSCH. The DMRS may be time-multiplexed with the PUSCH. The base station apparatus <NUM> may use the DMRS in order to perform channel compensation of the PUSCH.

The following downlink physical channels are used for downlink radio communication from the base station apparatus <NUM> to the terminal apparatus <NUM>. The downlink physical channels are used to transmit information output from the higher layer.

The PDCCH is used to transmit Downlink Control Information (DCI). The downlink control information is also referred to as a DCI format. The downlink control information may be used to schedule the PDSCH. The downlink control information may include a downlink assignment used to schedule the PDSCH. The downlink control information may be used to schedule the PUSCH. The downlink control information may include an uplink grant used to schedule the PUSCH.

The downlink control information may be used for activation or deactivation of Semi-Persistent Scheduling (SPS). The downlink control information may be used for activation or deactivation of a configured grant type <NUM>.

The PDSCH is used to transmit downlink data (Transport block, Downlink-Shared Channel (DL-SCH)).

The UL-SCH and the DL-SCH are transport channels. A channel used in a Medium Access Control (MAC) layer is referred to as a transport channel. The unit of transport channels used in the MAC layer is also referred to as a transport block (TB) or a MAC Protocol Data Unit (PDU).

A configuration of a radio frame according to the present embodiment will be described below.

In the radio communication system according to an aspect of the present embodiment, at least Orthogonal Frequency Division Multiplexing (OFDM) is used. An OFDM symbol is the unit of OFDM in the time domain. Each OFDM symbol includes at least one or multiple subcarriers. An OFDM symbol is converted into a time-continuous signal in generation of a baseband signal. At least Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) is used in downlink. Either CP-OFDM or Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) is used in uplink. DFT-s-OFDM may be provided by applying Transform precoding to CP-OFDM. In the present embodiment, an OFDM symbol is also referred to simply as a symbol.

An OFDM symbol may be a name including a Cyclic Prefix (CP) added to the OFDM symbol. In other words, a certain OFDM symbol may be configured to include the OFDM symbol and a CP added to the OFDM symbol.

SubCarrier spacing (SCS) Δf may be <NUM>µ * <NUM>. For example, a subcarrier spacing configuration µ may be configured as any of <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, and/or <NUM>. The subcarrier spacing configuration µ may be provided based on a higher layer parameter. The subcarrier spacing configuration may be configured individually in uplink and downlink. The subcarrier spacing configuration µ may be configured individually for each BWP. A BWP in which the PDCCH is transmitted/received may be the same as or different from a BWP in which the PDSCH corresponding to the PDCCH is transmitted/received. In other words, the subcarrier spacing configuration µ corresponding to the PDCCH, the subcarrier spacing configuration µ corresponding to the PDSCH, and the subcarrier spacing configuration µ corresponding to the PUSCH may be defined individually.

In the radio communication system according to an aspect of the present embodiment, a time unit Tc is used to represent a length of the time domain. The time unit Tc is provided as Tc = <NUM>/(Δfmax * Nf). Δfmax may be a maximum value of subcarrier spacing supported by the radio communication system according to an aspect of the present embodiment. Δfmax may be Δfmax = <NUM>. Nf may be Nf = <NUM>. A constant κ is κ = Δfmax * Nf/(ΔfrefNf, ref) = <NUM>. Δfref may be <NUM>. Nf, ref may be <NUM>.

The constant κ may be a value indicating a relationship between reference subcarrier spacing and Tc. The constant κ may be used for a length of a subframe. The number of slots included in a subframe may be provided at least based on the constant κ. Δfref is a reference subcarrier spacing, and Nf, ref is a value corresponding to the reference subcarrier spacing.

<FIG> is a diagram illustrating a schematic configuration of a radio frame according to the present embodiment. In <FIG>, the horizontal axis represents a time axis. Signal transmission in downlink and/or signal transmission in uplink are performed with radio frames having a length of <NUM>. A radio frame includes <NUM> subframes. The length of a subframe is <NUM>. The length of a radio frame may be provided independently of subcarrier spacing Δf. That is, a radio frame may be configured independently of µ. The length of a subframe may be provided independently of subcarrier spacing Δf. That is, a subframe may be configured independently of µ.

For a certain subcarrier spacing configuration µ, the number of slots included in a subframe and indices of the slots may be provided. For example, slot numbers nµs in a subframe may be provided in ascending order ranging from <NUM> to Nsubframe, µslot-<NUM> in the subframe. For the subcarrier spacing configuration µ, the number of slots included in a radio frame and indices of the slots may be provided. In addition, slot numbers nµs,f may be provided in ascending order ranging from <NUM> to Nframe, µslot-<NUM> in a radio frame. N frame, µslot is the number of consecutive slots for each radio frame. That is, Nfame, µslot consecutive slots may be included in one radio frame. Nslotsymb is the number of consecutive OFDM symbols in each slot. In other words, Nslotsymb consecutive OFDM symbols may be included in one slot. Nslotsymb may be provided at least based on a Cyclic Prefix (CP) configuration. The CP configuration may be provided at least based on a higher layer parameter. The CP configuration may be provided at least based on dedicated RRC signaling. A slot number is also referred to as a slot index.

<FIG> is an example illustrating a relationship between Nslotsymb, a subcarrier spacing configuration µ, and a CP configuration according to an aspect of the present embodiment. In A in <FIG>, for example, in a case that the subcarrier spacing configuration µ is <NUM> and the CP configuration is a normal cyclic prefix (normal CP), Nslotsymb is equal to <NUM>, Nfame, µslot is equal to <NUM>, and Nsubframe, µslot is equal to <NUM>. In addition, in B in <FIG>, for example, in a case that the subcarrier spacing configuration µ is <NUM> and the CP configuration is an extended cyclic prefix (extended CP), Nslotsymb is equal to <NUM>, Nfame, µslot is equal to <NUM>, and Nsubframe, µslot is equal to <NUM>.

<FIG> is a schematic diagram illustrating an example of a resource grid in a subframe according to an aspect of the present embodiment. In the resource grid in <FIG>, the horizontal axis represents an index lsym of the time domain, and the vertical axis represents an index ksc of the frequency domain. In one subframe, the frequency domain of the resource grid includes NµRBNRBsc subcarriers. In one subframe, the number of OFDM symbols constituting a resource grid Nsubframe, µsymb may be <NUM> * <NUM>µ. One resource block includes NRBsc subcarriers. The time domain of the resource block may correspond to one OFDM symbol. The time domain of the resource block may correspond to <NUM> OFDM symbols. The time domain of the resource block may correspond to one or multiple slots. The time domain of the resource block may correspond to one subframe.

The terminal apparatus <NUM> may receive an indication to perform transmission/reception using only a subset of the resource grid. The subset of the resource grid is also referred to as a BWP, and the BWP may be provided at least based on a higher layer parameter and/or some or all DCI. A BWP may also be referred to as a Carrier Bandwidth Part. The terminal apparatus <NUM> need not receive an indication to perform transmission/reception by using all sets of resource grids. The terminal apparatus <NUM> may receive an indication to perform transmission/reception by using some frequency resources within the resource grid. One BWP may include multiple resource blocks in the frequency domain. One BWP may include multiple consecutive resource blocks in the frequency domain. A BWP configured for a downlink carrier is also referred to as a downlink BWP. A BWP configured for an uplink carrier is also referred to as an uplink BWP. A BWP may be a subset of the band of a carrier.

One or multiple downlink BWPs may be configured for each serving cell. One or multiple uplink BWPs may be configured for each serving cell.

One downlink BWP among one or multiple downlink BWPs configured for a serving cell may be configured as an active downlink BWP. A downlink BWP switch is used to deactivate one active downlink BWP and to activate an inactive downlink BWP other than the one active downlink BWP. The downlink BWP switch may be controlled by a BWP field included in downlink control information. The downlink BWP switch may be controlled based on a higher layer parameter.

A DL-SCH may be received in the active downlink BWP. A PDCCH may be monitored in the active downlink BWP. A PDSCH may be received in the active downlink BWP.

A DL-SCH may not be received in the inactive downlink BWP. A PDCCH may not be monitored in the inactive downlink BWP. CSI for the inactive downlink BWP is not reported.

Two or more downlink BWPs among one or multiple downlink BWPs configured for a serving cell need not be configured as active downlink BWPs.

One uplink BWP among one or multiple uplink BWPs configured for a serving cell may be configured as an active uplink BWP. An uplink BWP switch is used to deactivate one active uplink BWP and to activate an inactive uplink BWP other than the one active uplink BWP. The uplink BWP switch may be controlled by a BWP field included in downlink control information. The uplink BWP switch may be controlled based on a higher layer parameter.

In the active uplink BWP, an UL-SCH may be transmitted. In the active uplink BWP, a PUCCH may be transmitted. In the active uplink BWP, a PRACH may be transmitted. In the active uplink BWP, an SRS may be transmitted.

In the inactive uplink BWP, no UL-SCH is transmitted. In the inactive uplink BWP, no PUCCH is transmitted. In the inactive uplink BWP, no PRACH is transmitted. In the inactive uplink BWP, no SRS is transmitted.

Two or more uplink BWPs among one or multiple uplink BWPs configured for a serving cell need not be configured as active uplink BWPs.

Hereinafter, aspects of one active downlink BWP and one active uplink BWP will be described in the present embodiment unless otherwise indicated. Hereinafter, in the present embodiment, a case in which an active downlink BWP and an active uplink BWP are not switched is assumed unless otherwise indicated.

Configurations of apparatuses according to the present embodiment will be described below.

<FIG> is a schematic block diagram illustrating a configuration of the terminal apparatus <NUM> according to the present embodiment. As illustrated, the terminal apparatus <NUM> includes a radio transmission and/or reception unit <NUM> and a higher layer processing unit <NUM>. The radio transmission and/or reception unit <NUM> is configured to include an antenna part <NUM>, a Radio Frequency (RF) unit <NUM>, and a baseband unit <NUM>. The higher layer processing unit <NUM> is configured to include a medium access control layer processing unit <NUM> and a radio resource control layer processing unit <NUM>. The radio transmission and/or reception unit <NUM> is also referred to as a transmitter, a receiver, a coding unit, a decoding unit, or a physical layer processing unit.

The higher layer processing unit <NUM> outputs uplink data (transport blocks) generated by a user operation or the like, to the radio transmission and/or reception unit <NUM>. The higher layer processing unit <NUM> performs processing of a Medium Access Control (MAC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Radio Resource Control (RRC) layer.

The medium access control layer processing unit <NUM> included in the higher layer processing unit <NUM> performs processing of the medium access control layer. The medium access control layer processing unit <NUM> controls a random access procedure based on various types of configuration information/parameter managed by the radio resource control layer processing unit <NUM>.

The radio resource control layer processing unit <NUM> included in the higher layer processing unit <NUM> performs processing of the radio resource control layer. The radio resource control layer processing unit <NUM> manages various types of configuration information/parameter of the terminal apparatus. The radio resource control layer processing unit <NUM> sets various types of configuration information/parameter based on a higher layer signal received from the base station apparatus <NUM>. In other words, the radio resource control layer processing unit <NUM> sets the various types of configuration information/parameter based on the information indicating the various types of configuration information/parameter received from the base station apparatus <NUM>.

The radio transmission and/or reception unit <NUM> performs processing of the physical layer, such as modulation, demodulation, coding, decoding, and the like. The radio transmission and/or reception unit <NUM> demultiplexes, demodulates, and decodes a signal received from the base station apparatus <NUM>, and outputs the decoded information to the higher layer processing unit <NUM>. The radio transmission and/or reception unit <NUM> generates a transmission signal by modulating and coding data, and transmits the signal to the base station apparatus <NUM>.

The RF unit <NUM> converts (down-converts) a signal received via the antenna unit <NUM> into a baseband signal through orthogonal demodulation and removes unnecessary frequency components. The RF unit <NUM> outputs a processed analog signal to the baseband unit.

The baseband unit <NUM> converts the analog signal input from the RF unit <NUM> into a digital signal. The baseband unit <NUM> removes a portion corresponding to a Cyclic Prefix (CP) from the converted digital signal, performs a Fast Fourier Transform (FFT) on the signal from which the CP has been removed, and extracts a signal of the frequency domain.

The baseband unit <NUM> generates an OFDM symbol by performing an Inverse Fast Fourier Transform (IFFT) on the data, adds a CP to the generated OFDM symbol, generates a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit <NUM> outputs the converted analog signal to the RF unit <NUM>.

The RF unit <NUM> removes unnecessary frequency components from the analog signal input from the baseband unit <NUM> using a low-pass filter, up-converts the analog signal into a signal of a carrier frequency, and transmits the up-converted signal via the antenna unit <NUM>. Furthermore, the RF unit <NUM> amplifies power. Furthermore, the RF unit <NUM> may have a function of controlling transmission power. The RF unit <NUM> is also referred to as a transmission power controller.

<FIG> is a schematic block diagram illustrating a configuration of the base station apparatus <NUM> according to the present embodiment. As illustrated, the base station apparatus <NUM> is configured to include a radio transmission and/or reception unit <NUM> and a higher layer processing unit <NUM>. The radio transmission and/or reception unit <NUM> is configured to include an antenna unit <NUM>, an RF unit <NUM>, and a baseband unit <NUM>. The higher layer processing unit <NUM> is configured to include a medium access control layer processing unit <NUM> and a radio resource control layer processing unit <NUM>. The radio transmission and/or reception unit <NUM> is also referred to as a transmitter, a receiver, a coding unit, a decoding unit, or a physical layer processing unit.

The higher layer processing unit <NUM> performs processing of a Medium Access Control (MAC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Radio Resource Control (RRC) layer.

The radio resource control layer processing unit <NUM> included in the higher layer processing unit <NUM> performs processing of the radio resource control layer. The radio resource control layer processing unit <NUM> generates, or acquires from a higher node, downlink data (a transport block) allocated to a physical downlink shared channel, system information, an RRC message, a MAC Control Element (CE), and the like, and outputs the generated or acquired data to the radio transmission and/or reception unit <NUM>. Furthermore, the radio resource control layer processing unit <NUM> manages various types of configuration information/parameter for each of the terminal apparatuses <NUM>. The radio resource control layer processing unit <NUM> may set various types of configuration information/parameter for each of the terminal apparatuses <NUM> via higher layer signaling. That is, the radio resource control layer processing unit <NUM> transmits/broadcasts information indicating various types of configuration information/parameter.

The functionality of the radio transmission and/or reception unit <NUM> is similar to the functionality of the radio transmission and/or reception unit <NUM>, and thus description thereof is omitted.

Each of the units having the reference numerals <NUM> to <NUM> included in the terminal apparatus <NUM> may be configured as a circuit. Each of the units having the reference numerals <NUM> to <NUM> included in the base station apparatus <NUM> may be configured as a circuit. Each of the units having the reference numerals <NUM> to <NUM> included in the terminal apparatus <NUM> may be configured as at least one processor and a memory coupled to the at least one processor. Each of the units having the reference numerals <NUM> to <NUM> included in the base station apparatus <NUM> may be configured as at least one processor and a memory coupled to the at least one processor.

CRC scrambled with a Radio Network Temporary Identifier (RNTI) may be added to a DCI format. The DCI format with the CRC scrambled with the RNTI added is also referred to as a DCI format with a RNTI.

A PDCCH including the DCI format with the CRC scrambled with the RNTI added is also referred to as a PDCCH with a RNTI, a PDCCH for a RNTI, or a PDCCH addressed to a RNTI.

A Cell Radio Network Temporary Identifier (C-RNTI) may be used for dynamically scheduled unicast transmission. The dynamically scheduled unicast transmission may correspond to a DL-SCH and an UL-SCH. In other words, the dynamically scheduled unicast transmission is either PDSCH transmission or PUSCH transmission. The terminal apparatus <NUM> may receive (decode) the PDSCH based on detection of the PDCCH addressed to the C-RNTI including a downlink assignment. The terminal apparatus <NUM> may transmit the PUSCH based on detection of the PDCCH addressed to the C-RNTI including an uplink grant.

A Configured Scheduling Radio Network Temporary Identifier (CS-RNTI) may be used for configured and scheduled unicast transmission. The CS-RNTI may be used for activation and deactivation of the configured and scheduled unicast transmission. The configured and scheduled unicast transmission may correspond to a DL-SCH and an UL-SCH. In other words, the configured and scheduled unicast transmission is either PDSCH transmission or PUSCH transmission.

The configured and scheduled unicast transmission may include downlink Semi-Persistent Scheduling (SPS) and an uplink configured grant.

SPS according to the present embodiment will be described below. <FIG> is a diagram illustrating a flow for describing an example of SPS according to the present embodiment. The processing in <FIG> may be performed by a MAC entity (MAC layer) of the radio resource control layer processing unit <NUM> or the terminal apparatus <NUM>.

In step <NUM>, the terminal apparatus <NUM> receives a downlink assignment for SPS, configures or stores the downlink assignment for SPS, and proceeds to step <NUM>. The configured or stored downlink assignment is also referred to as a configured downlink assignment. The terminal apparatus <NUM> may receive the downlink assignment for SPS using a PDCCH addressed to a CS-RNTI.

After the downlink assignment is configured for SPS, the terminal apparatus <NUM>, in step <NUM>, sequentially considers an N-th downlink assignment to be generated in a downlink slot satisfying Equation (<NUM>) below, and proceeds to step <NUM>.

NSFN represents a system frame number (SFN) that is a radio frame number. Nslot represents a slot number in a radio frame. The NSFN_start_SPS and Nslot_start_SPS are an SFN and a slot for the first transmission of the PDSCH for which configured downlink assignment has been initiated. Nperiodicity_SPS is a parameter configured by RRC, and is a period of a configured downlink assignment for SPS. The configured downlink assignment may be implicitly reused according to the period defined by the RRC.

In step <NUM>, the terminal apparatus <NUM> determines whether the duration of the PDSCH of the configured downlink assignment overlaps a duration of the PDSCH of the downlink assignment received on the PDCCH. In step <NUM>, in a case that the terminal apparatus <NUM> determines that the duration of the PDSCH of the configured downlink assignment does not overlap the duration of the PDSCH of the downlink assignment received on the PDCCH, the terminal apparatus <NUM> proceeds to step <NUM>. In step <NUM>, in a case that the terminal apparatus <NUM> determines that the duration of the PDSCH of the configured downlink assignment overlaps the duration of the PDSCH of the downlink assignment received on the PDCCH, the terminal apparatus <NUM> proceeds to step <NUM>.

In step <NUM>, the terminal apparatus <NUM> attempts to decode a transport block received in the duration of the PDSCH of the configured downlink assignment. In other words, in a case that the terminal apparatus <NUM> determines that the duration of the PDSCH of the configured downlink assignment overlaps the duration of the PDSCH of the downlink assignment received on the PDCCH in step <NUM>, the terminal apparatus <NUM> need not attempt to decode the transport block in the PDSCH corresponding to the configured downlink assignment. In other words, in a case that the terminal apparatus <NUM> has not found a PDCCH addressed to a C-RNTI, downlink transmission according to the configured downlink assignment is assumed. In addition, in a case that the terminal apparatus <NUM> has found a PDCCH addressed to a C-RNTI (downlink assignment), a downlink assignment in which allocation of the PDCCH addressed to the C-RNTI (downlink assignment) is configured is overridden.

<FIG> is a diagram illustrating a detailed example of step <NUM> according to the present embodiment. Step <NUM> may include steps 706a to <NUM>. The terminal apparatus <NUM> may perform processing sequentially from processing of step 706a. In step 706a, the terminal apparatus <NUM> may indicate the physical layer to receive a transport block on the DL-SCH according to the configured downlink assignment in the duration of the PDSCH of the configured downlink assignment and deliver the transport block to a HARQ entity. In step 706b, the terminal apparatus <NUM> may set the HARQ process ID to the HARQ process ID associated with the duration of the PDSCH. The HARQ process ID associated with the duration of the PDSCH may be provided at least based on a slot number including the duration of the PDSCH. In step 706c, the terminal apparatus <NUM> considers the NDI bit to have been toggled. In 706d, the terminal apparatus <NUM> indicates the presence of the configured downlink assignment to the HARQ entity and delivers HARQ information to the HARQ entity.

Step 706e may be performed by the HARQ entity included in the MAC entity of the terminal apparatus <NUM>. The HARQ entity manages HARQ processes. In step 706e, the terminal apparatus <NUM> may allocate the transport block and the HARQ information received from the physical layer to the HARQ process indicated by the HARQ information.

Steps 706f and <NUM> may be performed in the HARQ process of the terminal apparatus <NUM>. In step 706f, the terminal apparatus <NUM> may attempt to decode the received transport block. In step <NUM>, the terminal apparatus <NUM> indicates the physical layer to generate a HARQ-ACK of data in the transport block.

In step <NUM>, the terminal apparatus <NUM> determines whether deactivation (release) of SPS has been indicated. In step <NUM>, in a case that the terminal apparatus <NUM> determines that deactivation (release) of SPS has been indicated, the terminal apparatus <NUM> proceeds to step <NUM> and clears the configured downlink assignment. In step <NUM>, in a case that the terminal apparatus <NUM> determines that deactivation (release) of SPS is not indicated, the terminal apparatus <NUM> proceeds to step <NUM>.

In step <NUM>, in order for the terminal apparatus <NUM> to determine whether the duration of the PDSCH of the configured downlink assignment overlaps a duration of the PDSCH of downlink assignment received on the PDCCH, the PDCCH needs to be detected. However, there may be insufficient time for the determination to be made after detecting the PDCCH. That is, the PDCCH, in step <NUM>, needs to meet a predetermined time requirement.

Some or all of the timing and time in the present embodiment may include the influence of timing advance.

The time requirement for the PDCCH, in step <NUM>, will be described below. <FIG> is a diagram for describing a time requirement for a PDCCH according to the present embodiment.

A PDCCH <NUM> includes downlink control information for scheduling a PDSCH <NUM>. The PDSCH <NUM> is a PDSCH corresponding to the downlink assignment included in the downlink control information received on the PDCCH <NUM>. A PDSCH <NUM> is a PDSCH corresponding to the configured downlink assignment.

T <NUM> is the time at which the last OFDM symbol of the PDCCH <NUM> ends. T <NUM> is the time after Tproc, <NUM> from T <NUM>. A symbol <NUM> is the first (next) downlink OFDM symbol at which a CP is started after T <NUM>.

T <NUM> is the time at which the first OFDM symbol of the PDSCH <NUM> begins. T <NUM> is the time at which the first OFDM symbol of the PDSCH <NUM> begins. The time at which the last OFDM symbol on the channel ends is also referred to as the end of the last OFDM symbol on the channel, the time at which the channel ends, or the end of the channel. The time at which the first OFDM symbol of the channel begins is also referred to as the beginning of the first OFDM symbol on the channel, the time at which the channel begins, and the head of the channel. The beginning of the OFDM symbol may be the beginning of the CP of the OFDM symbol.

The symbol <NUM> is also referred to as a symbol L3. A symbol <NUM> is also referred to as a symbol L1.

T <NUM> is the time at which the last OFDM symbol of the PDSCH <NUM> ends. T <NUM> is the time after Tproc, <NUM> from T <NUM>. The symbol <NUM> is the first (next) uplink OFDM symbol at which a CP is started after T <NUM>.

A PUCCH <NUM> is used to transmit a HARQ-ACK. Here, the HARQ-ACK is a HARQ-ACK for the transport block of the PDSCH <NUM>. The PUCCH <NUM> is identified by a field of the downlink control information included in the PDCCH <NUM>.

Tproc, <NUM> may be provided at least based on a parameter µ'. Here, the parameter µ' may correspond to the smallest one of µPDCCH, µPDSCH, and µUL. Tproc, <NUM> may be provided at least based on a parameter µ". Here, the parameter µ" may correspond to the smaller one of µPDCCH and µPDSCH. µPDCCH corresponds to a downlink subcarrier spacing configuration of the PDCCH <NUM>. µPDSCH corresponds to downlink subcarrier spacing configurations of the PDSCH <NUM> and the PDSCH <NUM>. µUL corresponds to the subcarrier space of the PUCCH <NUM>. In a case that the PDCCH <NUM>, the PDSCH <NUM>, and the PDSCH <NUM> are transmitted on the same downlink BWP, µPDCCH and µPDSCH have the same value.

Tproc, <NUM> may be provided using Equation (<NUM>) below. Tproc, <NUM> may be provided using Equation (<NUM>) or Equation (<NUM>) below. <MAT> <MAT> <MAT>.

N<NUM> may be provided at least based on a capability of the terminal apparatus <NUM> and the parameter µ'. N<NUM> may be provided at least based on a capability parameter µ" of the terminal apparatus <NUM>. The value of N<NUM> corresponding to the parameter µ' of the first value may be different from the value of N<NUM> corresponding to the parameter µ" of the first value, or the values may be independently defined. The value of N<NUM> corresponding to the parameter µ' of the first value may be the same as the value of N<NUM> corresponding to the parameter µ" of the first value. The terminal apparatus <NUM> may transmit information indicating the capability of the terminal apparatus <NUM> to the base station apparatus <NUM>. The information indicating the capability of the terminal apparatus <NUM> may be included in a RRC message.

A value of d<NUM>,<NUM> may be provided based on at least the mapping of the PDSCH, the position (index) of the last OFDM symbol of the PDSCH, and some or all of the number of OFDM symbols allocated for the PDSCH. In a case that Tproc, <NUM> is calculated, a value of d<NUM>,<NUM> may be set to <NUM> regardless of the mapping of the PDSCH, the position (index) of the last OFDM symbol of the PDSCH, and the number of OFDM symbols allocated for the PDSCH.

In a case that the first uplink OFDM symbol of the PUCCH <NUM> starts no earlier than at the symbol <NUM>, the terminal apparatus <NUM> provides an effective HARQ-ACK corresponding to the PDSCH <NUM>. In a case that the first uplink OFDM symbol of the PUCCH <NUM> starts earlier than at the symbol <NUM>, the terminal apparatus <NUM> need not provide an effective HARQ-ACK corresponding to the PDSCH <NUM>.

In a case that the duration of the PDSCH <NUM> overlaps the duration of the PDSCH <NUM> and the first downlink OFDM symbol of the PDSCH <NUM> begins no earlier than the symbol <NUM>, the terminal apparatus <NUM> may perform some or all of the following processing A1, processing A2, and processing A3.

In the present invention, the terminal apparatus performs processing A1.

In a case that the duration of the PDSCH <NUM> overlaps the duration of the PDSCH <NUM> and the first downlink OFDM symbol of the PDSCH <NUM> begins earlier than the symbol <NUM>, the terminal apparatus <NUM> may perform (be allowed to perform) some or all of the following processing B1 to processing B5.

In other words, in a case that the PDSCH of the configured downlink assignment begins no earlier than a predetermined symbol (the symbol <NUM>) identified from the last symbol of the PDCCH, the PDCCH is considered to satisfy the predetermined time requirement. In a case that the PDSCH of the configured downlink assignment begins no earlier than the predetermined symbol (symbol <NUM>) identified from the last symbol of the PDCCH, the PDCCH is considered in step <NUM> in <FIG>.

In other words, in a case that the PDSCH of the configured downlink assignment begins earlier than a predetermined symbol (the symbol <NUM>) identified from the last symbol of the PDCCH, the PDCCH is considered to not satisfy the predetermined time requirement. In a case that the PDSCH of the configured downlink assignment begins earlier than the predetermined symbol (symbol <NUM>) identified from the last symbol of the PDCCH, the PDCCH need not be considered in step <NUM> in <FIG>.

The base station apparatus <NUM> may transmit the PDCCH corresponding to the PDSCH of the duration overlapping the duration of the PDSCH of the configured downlink assignment at a timing at which the predetermined time requirement is satisfied. In other words, the base station apparatus <NUM> may transmit a PDCCH corresponding to the PDSCH of the duration overlapping the duration of the PDSCH of the configured downlink assignment at a timing at which the PDSCH of the configured downlink assignment begins no earlier than the predetermined symbol (the symbol <NUM>) identified from the last symbol of the PDCCH. The base station apparatus <NUM> need not transmit the PDCCH corresponding to the PDSCH of the duration overlapping the duration of the PDSCH of the configured downlink assignment at a timing at which the PDSCH of the configured downlink assignment begins earlier than the predetermined symbol (the symbol <NUM>) identified from the last symbol of the PDCCH.

Hereinafter, a configured grant of the present embodiment will be described. <FIG> is a diagram illustrating a flow for describing an example of a configured grant according to the present embodiment. The processing in <FIG> may be performed by a MAC entity (MAC layer) of the radio resource control layer processing part <NUM> or the terminal apparatus <NUM>.

In step <NUM>, the terminal apparatus <NUM> receives an uplink grant for a configured grant, configures or stores the uplink grant for the configured grant, and proceeds to step <NUM>. The configured or stored uplink grant is also referred to as a configured uplink grant. The terminal apparatus <NUM> may receive the uplink grant for the configured grant by using the PDCCH addressed to the CS-RNTI. The terminal apparatus <NUM> may receive a RRC message including the configured uplink grant. The configured uplink grant may be configured using RRC.

After the uplink grant is configured for the configured grant, the terminal apparatus <NUM>, in step <NUM>, sequentially considers an N-th uplink grant to be generated in an uplink slot satisfying Equation (<NUM>) below, and proceeds to step <NUM>. In step <NUM>, a different equation from Equation (<NUM>) may be used.

NSFN represents a system frame number (SFN) that is a radio frame number. Nslot represents a slot number in a radio frame. NSFN_start_CG, Nslot_start_CG, and Nsymb_start_CG are SFNs, slots, and OFDM symbols of first transmission of the PUSCH for which configured downlink assignment has been initiated. Nperiodicity_CG is a parameter configured by the RRC and is a period of the configured uplink grant for the configured grant. The configured uplink grant may be implicitly reused according to the period defined by the RRC.

In step <NUM>, the terminal apparatus <NUM> determines whether the duration of the PUSCH of the configured uplink grant overlaps the duration of the PUSCH of the uplink grant received on the PDCCH. In step <NUM>, in a case that the terminal apparatus <NUM> determines that the duration of the PUSCH of the configured uplink grant does not overlap the duration of the PUSCH of the uplink grant received on the PDCCH, the terminal apparatus <NUM> proceeds to step <NUM>. In step <NUM>, in a case that the terminal apparatus <NUM> determines that the duration of the PUSCH of the configured uplink grant overlaps the duration of the PUSCH of the uplink grant received on the PDCCH, the terminal apparatus <NUM> proceeds to step <NUM>.

In step <NUM>, the terminal apparatus <NUM> transmits the transport block using the PUSCH of the configured uplink grant. In other words, in step <NUM>, in a case that the terminal apparatus <NUM> determines that the duration of the PUSCH of the configured uplink grant overlaps the duration of the PUSCH of the uplink grant received on the PDCCH, the terminal apparatus <NUM> need not transmit the transport block using the PUSCH corresponding to the configured uplink grant. In other words, in a case that the terminal apparatus <NUM> has not found a PDCCH addressed to a C-RNTI (uplink grant), uplink transmission according to the configured uplink grant is assumed. In addition, in a case that the terminal apparatus <NUM> has found a PDCCH addressed to a C-RNTI (uplink grant), the uplink grant to which allocation of the PDCCH addressed to the C-RNTI (uplink grant) is configured is overridden.

<FIG> is a diagram illustrating a detailed example of step <NUM> of the present embodiment. Step <NUM> may include steps 1006a to 706i. The terminal apparatus <NUM> may sequentially perform the processing from step 1006a. In step 1006a, the terminal apparatus <NUM> may set a HARQ process ID to a HARQ process ID associated with the duration of the PUSCH. The HARQ process ID associated with the duration of the PUSCH may be provided at least based on a slot number including the duration of the PUSCH. In step 1006b, the terminal apparatus <NUM> considers the NDI bit to have been toggled. In step 1006c, the terminal apparatus <NUM> delivers the associated HARQ information and the configured uplink grant to the HARQ entity.

Steps 1006d to 1006f may be processed by the HARQ entity included in the MAC entity of the terminal apparatus <NUM>. The HARQ entity manages HARQ processes. In step 1006d, the terminal apparatus <NUM> obtains the MAC PDU transmitted from the 'Multiplexing and assembly' entity. In step 1006e, the terminal apparatus <NUM> delivers the MAC PDU, the configured uplink grant, and the HARQ information of the transport block (MAC PDU) to the HARQ process. In step 1006f, the terminal apparatus <NUM> indicates the HARQ process to trigger initial transmission.

Steps <NUM> to 1006i may be processed in the HARQ process of the terminal apparatus <NUM>. In step <NUM>, the MAC PDU is stored in the HARQ buffer. In step <NUM>, the terminal apparatus <NUM> stores the configured uplink grant received from the HARQ entity. In step 1006i, the terminal apparatus <NUM> indicates the physical layer to generate transmission in accordance with the uplink grant stored in step <NUM>.

In step <NUM>, the terminal apparatus <NUM> determines whether deactivation (release) of the configured grant has been indicated. In step <NUM>, in a case that the terminal apparatus <NUM> determines that deactivation (release) of the configured grant has been indicated, the terminal apparatus <NUM> proceeds to step <NUM> and clears the configured uplink grant. In step <NUM>, in a case that the terminal apparatus <NUM> determines that deactivation (release) of the configured grant has not been indicated, the terminal apparatus <NUM> proceeds to step <NUM>.

In step <NUM>, in order for the terminal apparatus <NUM> to determine whether the duration of the PUSCH of the configured uplink grant overlaps the duration of the PUSCH of the uplink grant received on the PDCCH, the PDCCH needs to be detected. However, there may be insufficient time for the determination to be made after detecting the PDCCH. That is, the PDCCH in step <NUM> needs to meet a predetermined time requirement.

The time requirement for the PDCCH in step <NUM> will be described below. <FIG> is a diagram for describing a time requirement for a PDCCH according to the present embodiment.

A PDCCH <NUM> includes downlink control information for scheduling a PUSCH <NUM>. The PUSCH <NUM> is a PUSCH corresponding to an uplink grant included in the downlink control information received on the PDCCH <NUM>. A PUSCH <NUM> is a PUSCH corresponding to a configured uplink grant.

T <NUM> is the time at which the last OFDM symbol of the PDCCH <NUM> ends. T <NUM> is the time after Tproc, <NUM> from T <NUM>. A symbol <NUM> is the first (next) uplink OFDM symbol at which the CP begins after T <NUM>. T <NUM> is the time after Tproc, <NUM> from T <NUM>. A symbol <NUM> is the first (next) uplink OFDM symbol at which the CP begins after T <NUM>.

The symbol <NUM> is also referred to as a symbol L2. The symbol <NUM> is also referred to as a symbol L4.

T <NUM> is the time at which the first OFDM symbol of the PUSCH <NUM> begins. T <NUM> is the time at which the first OFDM symbol of the PUSCH <NUM> begins.

Tproc, <NUM> and Tproc, <NUM> may be provided at least based on a parameter µ‴. Here, the parameter µ‴ may correspond to the smaller one of µDL and µPUSCH. µDl corresponds to a downlink subcarrier spacing configuration in which the PDCCH <NUM> has been transmitted. µPUSCH corresponds to an uplink subcarrier space in which the PUSCH <NUM> and/or the PUSCH <NUM> are transmitted.

Tproc, <NUM> may be provided using Equation (<NUM>) below. T proc, <NUM> may be provided using any one of Equation (<NUM>) to Equation (<NUM>) below. <MAT> <MAT> <MAT> <MAT> <MAT>.

N<NUM> and N<NUM> may be provided at least based on a capability of the terminal apparatus <NUM> and the parameter µ‴. The value of N<NUM> corresponding to the parameter µ‴ of the first value may be different from the value of N<NUM> corresponding to the parameter µ‴ of the first value, or the values may be independently defined. The value of N<NUM> corresponding to the parameter µ‴ of the first value may be the same as the value of N<NUM> corresponding to the parameter µ‴ of the first value.

In a case that the first symbol allocated to the PUSCH <NUM> includes only a DMRS, the value of d<NUM>,<NUM> may be zero. In a case that the first symbol allocated to the PUSCH <NUM> does not include only a DMRS, the value of d<NUM>,<NUM> may be <NUM>. The first symbol allocated to the PUSCH <NUM> including only the DMRS may be the first symbol allocated to the PUSCH <NUM> not including a PUSCH. The first symbol allocated to the PUSCH <NUM> including only the DMRS may be the first symbol allocated to the PUSCH <NUM> including a PUSCH and a DMRS. In a case that Tproc, <NUM> is calculated, d<NUM>,<NUM> may be set to <NUM> regardless of whether the first symbol allocated to the PUSCH <NUM> includes only the DMRS.

In a case that the duration of the PUSCH <NUM> overlaps the duration of the PUSCH <NUM>, the first uplink OFDM symbol of the PUSCH <NUM> begins no earlier than the symbol <NUM>, and the first uplink OFDM symbol of the PUSCH <NUM> begins no earlier than the symbol <NUM>, the terminal apparatus <NUM> may perform some or all of the following processing C1, processing C2, and processing C3.

In a case that the first uplink OFDM symbol of the PUSCH <NUM> begins earlier than the symbol <NUM>, or the duration of the PUSCH <NUM> overlaps the duration of the PUSCH <NUM>, and the first uplink OFDM symbol of the PUSCH <NUM> begins earlier than the symbol <NUM>, the terminal apparatus <NUM> may perform (be allowed to perform) some or all of the following processing D1 to processing D5.

Alternatively, in a case that the first uplink OFDM symbol of the PUSCH <NUM> begins no earlier than the symbol <NUM> and the first uplink OFDM symbol of the PUSCH <NUM> begins no earlier than the symbol <NUM>, the terminal apparatus <NUM> may perform some or all of the above-described processing C1, processing C2, and processing C3. In a case that the first uplink OFDM symbol of the PUSCH <NUM> begins earlier than the symbol <NUM>, or the first uplink OFDM symbol of the PUSCH <NUM> begins earlier than the symbol <NUM>, the terminal apparatus <NUM> may perform (be allowed to perform) some or all of the following processing D1 to processing D5.

In other words, in order for the PDCCH to satisfy the predetermined time requirement, the PUSCH of the configured uplink grant needs to begin no earlier than a predetermined symbol (the symbol <NUM> or symbol <NUM>) identified from the last symbol of the PDCCH.

In other words, in a case that the PUSCH of the configured uplink grant begins earlier than a predetermined symbol (the symbol <NUM> or symbol <NUM>) identified from the last symbol of the PDCCH, the PDCCH is considered to not satisfy the predetermined time requirement. In a case that the PUSCH of the configured uplink grant begins earlier than the predetermined symbol (the symbol <NUM> or symbol <NUM>) identified from the last symbol of the PDCCH, the PDCCH need not be considered in step <NUM> in <FIG>.

The base station apparatus <NUM> may transmit the PDCCH corresponding to the PUSCH with the duration overlapping the duration of the PUSCH of the configured uplink grant at a timing at which the predetermined time requirement is satisfied. In other words, the base station apparatus <NUM> may transmit a PDCCH corresponding to the PUSCH of the duration overlapping the duration of the PUSCH of the configured uplink grant at a timing at which the PUSCH of the configured uplink grant begins no earlier than the predetermined symbol (the symbol <NUM> or symbol <NUM>) identified from the last symbol of the PDCCH. In other words, the base station apparatus <NUM> may transmit the PDCCH corresponding to the PUSCH of the duration overlapping the duration of the PUSCH of the configured uplink grant at a timing at which the PUSCH corresponding to the PDCCH begins no earlier than the predetermined symbol (the symbol <NUM>) identified from the last symbol of the PDCCH. The base station apparatus <NUM> need not transmit the PDCCH corresponding to the PUSCH of the duration overlapping the duration of the PUSCH of the configured uplink grant at a timing at which the predetermined time requirement is not satisfied.

Hereinafter, various aspects of the terminal apparatus <NUM> and the base station apparatus <NUM> according to the present embodiment will be described.

These aspects enable the terminal apparatus <NUM> and the base station apparatus <NUM> to efficiently perform communication.

A program running on the base station apparatus <NUM> and the terminal apparatus <NUM> according to the present invention may be a program that controls a Central Processing Unit (CPU) (a program that causes a computer to function) and the like to realize the functions of the above-described embodiment according to the present invention. The information handled in these devices is temporarily stored in a Random Access Memory (RAM) while being processed. Thereafter, the information is stored in various types of Read Only Memory (ROM) such as a Flash ROM and a Hard Disk Drive (HDD), and when necessary, is read by the CPU to be modified or rewritten.

Note that the terminal apparatus <NUM> and the base station apparatus <NUM> according to the above-described embodiment may be partially realized by a computer. In that case, this configuration may be realized by recording a program for realizing such control functions on a computer-readable recording medium and causing a computer system to read the program recorded on the recording medium for execution.

Note that it is assumed that the "computer system" mentioned here refers to a computer system built into the terminal apparatus <NUM> or the base station apparatus <NUM>, and the computer system includes an OS and hardware components such as a peripheral apparatus. Furthermore, a "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, and the like, and a storage device such as a hard disk built into the computer system.

Moreover, the "computer-readable recording medium" may include a medium that dynamically retains a program for a short period of time, such as a communication line in a case that the program is transmitted over a network such as the Internet or over a communication line such as a telephone line, and may also include a medium that retains the program for a fixed period of time, such as a volatile memory included in the computer system functioning as a server or a client in such a case. Furthermore, the above-described program may be one for realizing some of the above-described functions, and also may be one capable of realizing the above-described functions in combination with a program already recorded in a computer system.

Furthermore, the base station apparatus <NUM> according to the above-described embodiment may be achieved as an aggregation (apparatus group) including multiple apparatuses. Each of the apparatuses constituting such an apparatus group may include some or all portions of each function or each functional block of the base station apparatus <NUM> according to the above-described embodiment. The apparatus group is required to have a complete set of functions or functional blocks of the base station apparatus <NUM>. Furthermore, the terminal apparatus <NUM> according to the above-described embodiment can also communicate with the base station apparatus as the aggregation.

Furthermore, the base station apparatus <NUM> according to the above-described embodiment may serve as an Evolved Universal Terrestrial Radio Access Network (EUTRAN). Furthermore, the base station apparatus <NUM> according to the above-described embodiment may have some or all of the functions of a node higher than an eNodeB.

Furthermore, some or all portions of each of the terminal apparatus <NUM> and the base station apparatus <NUM> according to the above-described embodiment may be typically achieved as an LSI which is an integrated circuit or may be achieved as a chip set. The functional blocks of each of the terminal apparatus <NUM> and the base station apparatus <NUM> may be individually achieved as a chip, or some or all of the functional blocks may be integrated into a chip. Furthermore, a circuit integration technique is not limited to the LSI, and may be realized with a dedicated circuit or a general-purpose processor. Furthermore, in the case where a circuit integration technology that replaces LSI were to appear due to advances in semiconductor technology, it is also possible to use an integrated circuit based on the technology.

Furthermore, according to the above-described embodiment, the terminal apparatus has been described as an example of a communication apparatus, but the present invention is not limited to such a terminal apparatus, and is applicable to a terminal apparatus or a communication apparatus of a fixed-type or a stationary-type electronic apparatus installed indoors or outdoors, for example, such as an audiovisual (AV) apparatus, a kitchen apparatus, a cleaning or washing machine, an air-conditioning apparatus, office equipment, a vending machine, and other household apparatuses.

Claim 1:
A terminal apparatus (<NUM>) comprising:
a radio resource control layer processing unit (<NUM>) configured to configure a downlink assignment; and
a reception unit (<NUM>) configured to receive on a physical downlink control channel, PDCCH, in one downlink BWP of one serving cell, downlink control information including a downlink assignment for Semi-Persistent Scheduling, SPS, the downlink control information used for scheduling of a first physical downlink shared channel, PDSCH, wherein
the reception unit is configured to receive the first PDSCH in a case that a duration of a second PDSCH corresponding to the configured downlink assignment for the SPS overlaps a duration of the first PDSCH, and a start symbol of the second PDSCH begins after a predetermined time period associated with the smaller one of a downlink subcarrier space setting of the PDCCH and a downlink subcarrier space setting of the PDSCH, after an end of the PDCCH.