Terminal device and base station device

Abstract

The present invention is provided with a reception unit that receives a first PDCCH in which a first DCI is disposed, a second PDCCH in which a second DCI is disposed, and a PDSCH scheduled by the second DCI, and in the present invention, a PDSCH-MTRP method is set to be applied to the PDSCH, the PDSCH-MTRP method being a part or all of an SFN method, an FDM method, a TDM method, and an SDM method, the first DCI indicating a first TCI state and a second TCI state, and the second DCI indicating a second TCI state and a third TCI state. Application of one or both of the first TCI state and the second TCI state to the PDSCH is determined on the basis of an upper layer parameter, and when one of the first TCI state and the second TCI state is applied to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH, and when one of the first TCI state and the second TCI state is applied to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH. In a case where both the first TCI state and the second TCI state are applied to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH.

Description

Technical Field

[0001] The present invention relates to a terminal device and a base station device. This application claims priority to Japanese Patent Application No. 2022-150165 filed in Japan on September 21, 2022, and the contents are incorporated herein by reference. Background Art

[0002] In the Third Generation Partnership Project (3GPP: rd In the 1990s and 1999s, the United Nations Development Programme (UNDP) and the United Nations Development Programme (UNDP) conducted research on wireless access methods and wireless networks for cellular mobile communications (hereinafter also referred to as "Long Term Evolution (LTE)" or "Evolved Universal Terrestrial Radio Access (EUTRA)"). In LTE, the base station device is also called eNodeB (evolved NodeB), and the terminal device is also called UE (User Equipment). LTE is a cellular communication system that configures the area covered by multiple base station devices in a cell shape. A single base station device can manage multiple service cells.

[0003] In 3GPP, the next generation standard (NR: New Radio) was studied in order to make recommendations to IMT (International Mobile Telecommunication)-2020, which is the next generation mobile communication system standard established by the International Telecommunication Union (ITU) (Non-patent document 1). NR is required to meet the requirements of the following three scenarios in a single technical framework: eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication).

[0004] In 3GPP, research is being conducted on the extension of services supported by NR (Non-Patent Document 2). Prior art literature Non-patent literature

[0005] Non-Patent Document 1: "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT docomo, 3GPP TSG RAN Meeting#71, Goteborg, Sweden, 7th-10th March, 2016. Non-Patent Document 2: "Release 17 package for RAN", RP-193216, RAN chairman, RAN1 chairman, RAN2 chairman, RAN3 chairman, 3GPP TSG RAN Meeting#86, Sitges, Spain, 9th-12th December, 2019 Summary of the Invention Problems to be Solved by the Invention

[0006] The present invention provides a terminal device for performing communication efficiently, a communication method for the terminal device, a base station device for performing communication efficiently, and a communication method for the base station device. Technical Solution

[0007] (1) A first aspect of the present invention is a terminal device. The terminal device includes a receiving unit that receives a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI. In the terminal device, it is set to apply the PDSCH-MTRP method to the PDSCH. The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method. The first DCI indicates a first TCI state and a second TCI state. Applying one or both of the first TCI state and the second TCI state to the PDSCH is determined based on upper layer parameters. When applying one of the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH. When applying both the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH. The second DCI includes a field different from the TCI field. When the field indicates a first indication, the first TCI state is applied to the PDSCH. When the field indicates a second indication, the second TCI state is applied to the PDSCH. When the field indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

[0008] (2) A second solution of the present invention is a terminal device. The terminal device includes a receiving unit. The receiving unit receives a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI. In the terminal device, it is set to apply the PDSCH-MTRP method to the PDSCH. The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method. The first DCI indicates a first TCI state and a second TCI state, and it is not expected to apply one of the first TCI state and the second TCI state to the PDSCH. When both the first TCI state and the second TCI state are applied to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH. The second DCI includes a field different from the TCI field. When the field indicates a first indication, the first TCI state is applied to the PDSCH. When the field indicates a second indication, the second TCI state is applied to the PDSCH. When the field indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

[0009] (3) In addition, a third aspect of the present invention is a base station apparatus. The base station apparatus includes a transmission unit that transmits a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI. In the base station apparatus, it is set to apply the PDSCH-MTRP method to the PDSCH. The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method. The first DCI indicates a first TCI state and a second TCI state. Determining to apply one or both of the first TCI state and the second TCI state to the PDSCH is based on the second DCI. When applying one of the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH. When applying both the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH. The second DCI includes a single field different from the TCI field. When the single field indicates a first indication, the first TCI state is applied to the PDSCH. When the single field indicates a second indication, the second TCI state is applied to the PDSCH. When the single field indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH. Advantageous Effects

[0010] According to the present invention, a terminal device can communicate efficiently. In addition, a base station device can communicate efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. Figure 2 is a diagram showing an example of the relationship between the subcarrier spacing setting μ, the number of OFDM symbols N per time slot slot symb and the CP (cyclic prefix) setting in one aspect of the present embodiment. Figure 3 is a diagram showing an example of a resource grid configuration method according to one aspect of the present embodiment. Figure 4 is a diagram showing a configuration example of a resource grid 3001 according to one aspect of the present embodiment. Figure 5 is a schematic block diagram showing a configuration example of a base station apparatus 3 according to one aspect of the present embodiment. Figure 6 This is a schematic block diagram showing a configuration example of the terminal device 1 according to one aspect of the present embodiment. Figure 7 This is a diagram showing a configuration example of the SS / PBCH block according to one aspect of the present embodiment. Figure 8 This is a diagram showing an example of the monitoring opportunity of the search area set according to one aspect of the present embodiment. Figure 9 This is a diagram showing an example of the activation command A according to one aspect of the present embodiment. Figure 10 This is a diagram showing an example of the activation command B according to one aspect of the present embodiment. Figure 11 This is a diagram showing an example of the activation command C according to one aspect of the present embodiment. Figure 12 This is a diagram showing an example of the activation command D according to one aspect of the present embodiment. Figure 13 This is a diagram showing an example of the activation command E according to one aspect of the present embodiment. Figure 14 This is a diagram showing an example of the management of the TCI state according to one aspect of the present embodiment. Detailed Embodiment

[0012] Hereinafter, embodiments of the present invention will be described.

[0013] floor(C) can be a floor function for a real number C. For example, floor(C) can be a function that outputs the largest integer within the range not exceeding the real number C. ceil(D) can be a ceiling function for a real number D. For example, ceil(D) can be a function that outputs the smallest integer within the range not lower than D. mod(E, F) can be a function that outputs the remainder obtained by dividing E by F. mod(E, F) can also be a function that outputs a value corresponding to the remainder obtained by dividing E by F. exp(G) = e^G. Here, e is the Napier number. H^I represents the I-th power of H. max(J, K) is a function that outputs the maximum value between J and K. Among them, when J and K are equal, max(J, K) is a function that outputs J or K. min(L, M) is a function that outputs the maximum value between L and M. Among them, when L and M are equal, min(L, M) is a function that outputs L or M. round(N) is a function that outputs the integer value closest to N. “·” represents multiplication.

[0014] In a wireless communication system according to an aspect of the present embodiment, OFDM (Orthogonal Frequency Division Multiplex) is used at least. An OFDM symbol is a unit in the time domain of OFDM. An OFDM symbol includes at least one or more subcarriers. The OFDM symbol is converted into a time-continuous signal in baseband signal generation. In the downlink, CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplex) is used at least. In the uplink, either CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex) is used. DFT-s-OFDM can be obtained by applying transform precoding to CP-OFDM.

[0015] The OFDM symbol may be a name including the CP added to the OFDM symbol. That is, a certain OFDM symbol may be configured to include the certain OFDM symbol and the CP added to the certain OFDM symbol.

[0016] Figure 1 It is a conceptual diagram of a wireless communication system according to an aspect of the present embodiment. In Figure 1 the wireless communication system is configured to include at least terminal devices 1A to 1C and a base station device 3 (BS#3: Base station#3). Hereinafter, the terminal devices 1A to 1C are also referred to as terminal device 1 (UE#1: User Equipment#1).

[0017] The base station device 3 may be configured to include one or more transmitting devices (or transmission points, transceiver devices, transceiver points). When the base station device 3 is composed of a plurality of transmitting devices, the plurality of transmitting devices may be respectively arranged at different positions.

[0018] The base station device 3 can provide one or more serving cells. A serving cell can be defined as a set of resources for wireless communication. In addition, a serving cell is also referred to as a cell.

[0019] A serving cell may be configured to include one or both of a downlink component carrier (downlink carrier) and an uplink component carrier (uplink carrier). A serving cell may also be configured to include one or both of more than two downlink component carriers and more than two uplink component carriers. The downlink component carrier and the uplink component carrier are collectively referred to as a component carrier (carrier).

[0020] For example, a resource grid may be provided for each component carrier. In addition, a resource grid may be provided for each set of a component carrier and a subcarrier spacing configuration μ. Here, the subcarrier spacing configuration μ is also referred to as numerology. For example, a resource grid may be provided for a set of an antenna port p, a subcarrier spacing configuration μ, and a transmission direction x.

[0021] The resource grid includes N size,μ grid,x N RB sc subcarriers. Among them, the resource grid starts from a common resource block N start,μ grid,x . In addition, the common resource block N start,μ grid,x is also referred to as the reference point of the resource grid.

[0022] The resource grid includes N subframe,μ symb OFDM symbols.

[0023] The subscript x added to the parameters associated with the resource grid represents the transmission direction. For example, the subscript x may be used to represent either the downlink or the uplink.

[0024] N size,μ grid,x is an offset setting represented by a parameter provided by the RRC layer (for example, the parameter CarrierBandwidth). N start,μ grid,x is a broadband setting represented by a parameter provided by the RRC layer (for example, the parameter OffsetToCarrier). The offset setting and the broadband setting are settings for configuring an SCS-specific carrier.

[0025] For a subcarrier spacing configuration μ of a certain subcarrier spacing, the subcarrier spacing (SCS: SubCarrier Spacing) Δf may be Δf = 2 μ ·15 kHz. Among them, the subcarrier spacing configuration μ may represent any one of 0, 1, 2, 3, or 4.

[0026] Figure 2 are the setting μ of the subcarrier spacing and the number N of OFDM symbols per time slot, which represent one embodiment of the present embodiment, slot symb and an example of the relationship of the CP (cyclic prefix) setting. In Figure 2 A, for example, when the subcarrier spacing setting μ is 2 and the CP setting is normal cyclic prefix (normal cyclic prefix), N slot symb = 14, N frame,μ slot = 40, N subframe,μ slot = 4. In addition, in Figure 2 B, for example, when the subcarrier spacing setting μ is 2 and the CP setting is extended cyclic prefix (extended cyclic prefix), N slot symb = 12, N frame,μ slot = 40, N subframe,μ slot = 4.

[0027] The time unit T c can be used to represent the length in the time domain. The time unit T c is T c = 1 / (Δf max ·N f ). Δf max = 480 kHz. N f = 4096. The constant κ is κ = Δf max ·N f / (Δf ref N f,ref ) = 64. Δf ref is 15 kHz. N f,ref is 2048.

[0028] The transmission of signals in the downlink and / or the transmission of signals in the uplink can be composed of (organized into) radio frames (system frames, frames) with a length of T f . T f = (Δf max N f / 100)·T s = 10 ms. The radio frame is configured to include 10 subframes. The length of the subframe is T sf = (Δf max N f / 1000)·T s = 1 ms. The number of OFDM symbols per subframe is N subframe,μ symb = N slot symb N subframe,μ slot .

[0029] An OFDM symbol is a unit in the time domain of a communication method. For example, an OFDM symbol can be a unit in the time domain of CP - OFDM. In addition, an OFDM symbol can be a unit in the time domain of DFT - s - OFDM.

[0030] A time slot can be configured to include multiple OFDM symbols. For example, a time slot can be composed of N consecutive slot symb OFDM symbols. For example, in the conventional CP setting, N slot symb = 14. In addition, in the conventional CP setting, N slot symb = 12.

[0031] The number and index of time slots included in a subframe can be given for the setting of a certain subcarrier spacing μ. For example, the time slot index n μ s can be given in ascending order as an integer value within the range of 0 to N subframe,μ slot - 1 in the subframe. The number and index of time slots included in a radio frame can also be given for the setting of the subcarrier spacing μ. In addition, the time slot index n μ s,f can also be given in ascending order as an integer value within the range of 0 to N frame,μ slot - 1 in the radio frame.

[0032] Figure 3 is a diagram showing an example of a method for constructing a resource grid representing a solution of the present embodiment. Figure 3 The horizontal axis of Figure 3 shows the frequency domain. In Figure 3 , a configuration example of the resource grid for the subcarrier spacing μ1 in the component carrier 300 and a configuration example of the resource grid for the subcarrier spacing μ2 in a certain component carrier are shown. Thus, one or more subcarrier spacings can be set for a certain component carrier. In

[0033]

[0034] The component carrier 300 is a frequency band having a specified width in the frequency domain.The point 3000 is an identifier for determining a certain subcarrier. The point 3000 is also referred to as point A. The common resource block (CRB) set 3100 is a set of common resource blocks for the subcarrier spacing setting μ1.

[0035] The common resource block in the common resource block set 3100 that includes the point 3000 ( Figure 3 the black monochromatic block in the common resource block set 3100) is also called the reference point of the common resource block set 3100. The reference point of the common resource block set 3100 can also be the common resource block with index 0 in the common resource block set 3100.

[0036] The offset 3011 is the offset from the reference point of the common resource block set 3100 to the reference point of the resource grid 3001. The offset 3011 is represented by the number of common resource blocks for the subcarrier spacing setting μ1. The resource grid 3001 includes N size,μ grid1,x common resource blocks starting from the reference point of the resource grid 3001.

[0037] The offset 3013 is the offset from the reference point of the resource grid 3001 to the reference point of the BWP (BandWidth Part) 3003 with index i1 (N start,μ BWP,i1 ).

[0038] The common resource block set 3200 is a set of common resource blocks for the subcarrier spacing setting μ2.

[0039] The common resource block in the common resource block set 3200 that includes the point 3000 ( Figure 3 the black monochromatic block in the common resource block set 3200) is also called the reference point of the common resource block set 3200. The reference point of the common resource block set 3200 can also be the common resource block with index 0 in the common resource block set 3200.

[0040] The offset 3012 is the offset from the reference point of the common resource block set 3200 to the reference point of the resource grid 3002. The offset 3012 is represented by the number of common resource blocks for the subcarrier spacing μ2. The resource grid 3002 includes N size,μ grid2,x common resource blocks starting from the reference point of the resource grid 3002.

[0041] The offset 3014 is the offset from the reference point of the resource grid 3002 to the reference point of the BWP 3004 with index i2 (N start,μ BWP,i2 ).

[0042] Figure 4 This is a diagram showing a configuration example of a resource grid 3001 representing one aspect of this embodiment. In the Figure 4 resource grid, the horizontal axis is the OFDM symbol index l sym and the vertical axis is the subcarrier index k sc . The resource grid 3001 includes N size,μ grid1,x N RB sc subcarriers and includes N subframe,μ symb OFDM symbols. Within the resource grid, the resource determined by the subcarrier index k sc and the OFDM symbol index l sym is referred to as a resource element (RE: Resource Element).

[0043] A resource block (RB: Resource Block) includes N RB sc consecutive subcarriers. The resource block is a general term for a common resource block, a physical resource block (PRB: Physical Resource Block), and a virtual resource block (VRB: Virtual ResourceBlock). Here, N RB SC = 12.

[0044] A resource block unit is a set of resources corresponding to one OFDM symbol in one resource block. That is, one resource block unit includes 12 resource elements corresponding to one OFDM symbol in one resource block.

[0045] For the common resource block with a set μ for a certain subcarrier spacing, in a certain common resource block set, indexing is added in ascending order starting from 0 in the frequency domain. The common resource block with index 0 for a certain subcarrier spacing setting μ includes (or competes with, is consistent with) point 3000. For the common resource block with index n μ CRB for a certain subcarrier spacing setting μ, it satisfies n μ CRB = ceil(k sc / N RB sc ). Here, the subcarrier with k sc = 0 is the subcarrier having the same center frequency as the center frequency of the subcarrier corresponding to point 3000.

[0046] The physical resource blocks with a set μ for a certain subcarrier spacing are indexed in ascending order starting from 0 in the frequency domain within a certain BWP. The index n of the physical resource blocks with a set μ for a certain subcarrier spacing μ PRB satisfies n μ CRB = n μ PRB + N start ,μ BWP,i where N start,μ BWP,i represents the reference point of the BWP with index i.

[0047] A BWP is defined as a subset of the common resource blocks included in the resource grid. A BWP includes N start,μ BWP,i starting from the reference point N of the BWP size,μ BWP,i common resource blocks. The BWP set for a downlink carrier is also referred to as a downlink BWP. The BWP set for an uplink component carrier is also referred to as an uplink BWP.

[0048] An antenna port can be defined as follows: The channel over which a symbol on an antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. For example, the channel can correspond to a physical channel. Additionally, the symbol can also correspond to an OFDM symbol. Additionally, the symbol can also correspond to a resource block unit. Additionally, the symbol can also correspond to a resource element.

[0049] The large scale property of a channel that transmits symbols in one antenna port can be estimated based on the channel that transmits symbols in another antenna port, and the two antenna ports are called QCL (Quasi Co-Located). Among them, the large scale property can at least include the long-term property of the channel. The large scale property can also at least include part or all of the delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. The beam parameters of the first antenna port and the second antenna port being QCL can be that the receiving beam assumed by the receiving side for the first antenna port and the receiving beam assumed by the receiving side for the second antenna port are the same (or corresponding). The beam parameters of the first antenna port and the second antenna port being QCL can also be that the transmitting beam assumed by the receiving side for the first antenna port and the transmitting beam assumed by the receiving side for the second antenna port are the same (or corresponding). The terminal device 1 can assume that the two antenna ports are QCL when it can estimate the large scale property of the channel that transmits symbols in another antenna port from the channel that transmits symbols in one antenna port. The two antenna ports being QCL can also be assuming that the two antenna ports are QCL. The large scale property can be called the QCL parameter.

[0050] The QCL type can be any one of type A, type B, type C, and type D.

[0051] For a QCL of type A with two antenna ports, the first large-scale characteristic of a channel that transmits symbols on one antenna port can be estimated based on the channel that transmits symbols on the other antenna port. For a QCL of type B with two antenna ports, the second large-scale characteristic of a channel that transmits symbols on one antenna port can be estimated based on the channel that transmits symbols on the other antenna port. For a QCL of type C with two antenna ports, the third large-scale characteristic of a channel that transmits symbols on one antenna port can be estimated based on the channel that transmits symbols on the other antenna port. For a QCL of type D with two antenna ports, the fourth large-scale characteristic of a channel that transmits symbols on one antenna port can be estimated based on the channel that transmits symbols on the other antenna port. The first large-scale characteristic may include all of Doppler frequency shift, Doppler spread, average delay, and delay spread. The second large-scale characteristic may include all of Doppler frequency shift and Doppler spread. The third large-scale characteristic may include all of Doppler frequency shift and average delay. The fourth large-scale characteristic may include spatial reception parameters (information on spatial direction, information on beam). The antenna port for DMRS may be a DMRS port. The antenna port for PTRS may be a PTRS port. The antenna port associated with PTRS may be a PTRS port. The antenna port for SRS may be an SRS port. The antenna port for DMRS may be a DMRS port. The antenna port associated with DMRS may be a DMRS port.

[0052] Carrier aggregation may be communication using multiple serving cells that are aggregated. In addition, carrier aggregation may also be communication using multiple component carriers that are aggregated. In addition, carrier aggregation may also be communication using multiple downlink component carriers that are aggregated. In addition, carrier aggregation may also be communication using multiple uplink component carriers that are aggregated.

[0053] Figure 5 It is a schematic block diagram showing a configuration example of a base station device 3 representing one aspect of the present embodiment. As Figure 5 shown, the base station device 3 includes at least a part or all of a radio transceiver unit (physical layer processing unit) 30 and / or an upper layer processing unit 34. The radio transceiver unit 30 includes at least a part or all of an antenna unit 31, an RF (Radio Frequency) unit 32, and a baseband unit 33. The upper layer processing unit 34 includes at least a part or all of a media access control layer processing unit 35 and a radio resource control (RRC) layer processing unit 36.

[0054] The wireless transceiver unit 30 includes at least a part or all of the wireless transmission unit 30a and the wireless reception unit 30b. Here, the device configurations of the baseband units included in the wireless transmission unit 30a and the wireless reception unit 30b may be the same or different. In addition, the device configurations of the RF units included in the wireless transmission unit 30a and the wireless reception unit 30b may be the same or different. In addition, the device configurations of the antenna units included in the wireless transmission unit 30a and the wireless reception unit 30b may be the same or different.

[0055] For example, the wireless transmission unit 30a may generate and transmit the baseband signal of PDSCH. For example, the wireless transmission unit 30a may also generate and transmit the baseband signal of PDCCH. For example, the wireless transmission unit 30a may also generate and transmit the baseband signal of PBCH. For example, the wireless transmission unit 30a may also generate and transmit the baseband signal of the synchronization signal. For example, the wireless transmission unit 30a may also generate and transmit the baseband signal of PDSCH DMRS. For example, the wireless transmission unit 30a may also generate and transmit the baseband signal of PDCCH DMRS. For example, the wireless transmission unit 30a may also generate and transmit the baseband signal of CSI-RS. For example, the wireless transmission unit 30a may further generate and transmit the baseband signal of DL PTRS.

[0056] For example, the wireless reception unit 30b may receive PRACH. For example, the wireless reception unit 30b may also receive and demodulate PUCCH. The wireless reception unit 30b may also receive and demodulate PUSCH. For example, the wireless reception unit 30b may also receive PUCCH DMRS. For example, the wireless reception unit 30b may also receive PUSCH DMRS. For example, the wireless reception unit 30b may also receive ULPTRS. For example, the wireless reception unit 30b may further receive SRS.

[0057] The upper layer processing unit 34 outputs downlink data (transport block) to the wireless transceiver unit 30 (or the wireless transmission unit 30a). The upper layer processing unit 34 performs processing of the MAC (Medium Access Control) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.

[0058] The media access control layer processing unit 35 included in the upper layer processing unit 34 performs MAC layer processing.

[0059] The radio resource control layer processing unit 36 included in the upper layer processing unit 34 performs RRC layer processing. The radio resource control layer processing unit 36 manages various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 36 sets RRC parameters based on the RRC messages received from the terminal device 1.

[0060] The wireless transceiver unit 30 (or the wireless transmission unit 30a) performs processing such as modulation and encoding. The wireless transceiver unit 30 (or the wireless transmission unit 30a) generates a physical signal by modulating, encoding, and generating a baseband signal (conversion to a time-continuous signal) for the downlink data, and transmits it to the terminal device 1. The wireless transceiver unit 30 (or the wireless transmission unit 30a) may configure the physical signal to a certain component carrier and transmit it to the terminal device 1.

[0061] The wireless transceiver unit 30 (or the wireless reception unit 30b) performs processing such as demodulation and decoding. The wireless transceiver unit 30 (or the wireless reception unit 30b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 34. The wireless transceiver unit 30 (or the wireless reception unit 30b) may perform a channel access process before the transmission of the physical signal.

[0062] The RF unit 32 converts (down-converts) the signal received via the antenna unit 31 into a baseband signal by quadrature demodulation, and removes unnecessary frequency components. The RF unit 32 outputs the processed analog signal to the baseband unit.

[0063] The baseband unit 33 converts the analog signal (analog signal) input from the RF unit 32 into a digital signal (digital signal). The baseband unit 33 removes the part equivalent to the CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT: Fast Fourier Transform) on the signal after removing the CP, and extracts the signal in the frequency domain.

[0064] The baseband unit 33 performs an inverse fast Fourier transform (IFFT: Inverse Fast Fourier Transform) on the data, generates an OFDM symbol, adds a CP to the generated OFDM symbol to generate a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 33 outputs the converted analog signal to the RF unit 32.

[0065] The RF unit 32 uses a low-pass filter to remove redundant frequency components from the analog signal input by the baseband unit 33, up-converts the analog signal to the carrier frequency, and transmits it via the antenna unit 31. In addition, the RF unit 32 may also have a function of controlling the transmission power. The RF unit 32 is also referred to as the transmission power control unit.

[0066] One or more serving cells (or component carriers, downlink component carriers, uplink component carriers) can be set for the terminal device 1.

[0067] Each serving cell set for the terminal device 1 can be any one of a PCell (Primary cell, primary cell), a PSCell (Primary SCG cell, primary SCG cell), and an SCell (Secondary Cell, secondary cell).

[0068] The PCell is a serving cell included in the MCG (Master Cell Group: master cell group). The PCell is the cell (the cell where the procedure has been performed) through which the terminal device 1 performs the initial connection establishment procedure or the connection re-establishment procedure.

[0069] The PSCell is a serving cell included in the SCG (Secondary Cell Group: secondary cell group). The PSCell is the serving cell to which the terminal device 1 performs random access.

[0070] The SCell can be included in either the MCG or the SCG.

[0071] The serving cell group (cell group) is a term that includes at least the MCG and the SCG. The serving cell group can include one or more serving cells (or component carriers). The one or more serving cells (or component carriers) included in the serving cell group can be utilized through carrier aggregation.

[0072] One or more downlink BWPs can be set for each serving cell (or downlink component carrier). One or more uplink BWPs can be set for each serving cell (or uplink component carrier).

[0073] One of the one or more downlink BWPs configured for the serving cell (or downlink component carrier) can be configured as the active downlink BWP (alternatively, one downlink BWP can also be activated). One of the one or more uplink BWPs configured for the serving cell (or uplink component carrier) can be configured as the active uplink BWP (alternatively, one uplink BWP can also be activated).

[0074] The PDSCH, PDCCH, and CSI-RS can be received in the active downlink BWP. The terminal device 1 can attempt to receive the PDSCH, PDCCH, and CSI-RS in the active downlink BWP. The PUCCH and PUSCH can be transmitted in the active uplink BWP. The terminal device 1 can transmit the PUCCH and PUSCH in the active uplink BWP. The active downlink BWP and the active uplink BWP are collectively referred to as the active BWP.

[0075] The PDSCH, PDCCH, and CSI-RS can also not be received in a downlink BWP other than the active downlink BWP (inactive downlink BWP). The terminal device 1 can also attempt to receive the PDSCH, PDCCH, and CSI-RS in a downlink BWP that is not the active downlink BWP. The PUCCH and PUSCH can also not be transmitted in an uplink BWP that is not the active uplink BWP (inactive uplink BWP). The terminal device 1 can also not transmit the PUCCH and PUSCH in an uplink BWP that is not the active uplink BWP. The inactive downlink BWP and the inactive uplink BWP are collectively referred to as the inactive BWP.

[0076] Downlink BWP switching is a process for deactivating an active downlink BWP of a certain serving cell and activating any one of the inactive downlink BWPs of that certain serving cell. Downlink BWP switching can be controlled by the BWP field included in the downlink control information. Downlink BWP switching can also be controlled based on upper layer parameters.

[0077] Uplink BWP switching is used to deactivate an active uplink BWP and activate any one of the inactive uplink BWPs that is not that active uplink BWP. Uplink BWP switching can be controlled by the BWP field included in the downlink control information. Uplink BWP switching can also be controlled based on upper layer parameters.

[0078] Two or more of the one or more downlink BWPs set for the serving cell may not be set as the active downlink BWP. It is also possible to activate one downlink BWP for the serving cell at a certain time.

[0079] Two or more of the one or more uplink BWPs set for the serving cell may not be set as the active uplink BWP. It is also possible to activate one uplink BWP for the serving cell at a certain time.

[0080] Figure 6 It is a schematic block diagram showing a configuration example of the terminal device 1 which is a solution of the present embodiment. As Figure 6 shown, the terminal device 1 includes at least one or both of a wireless transceiver unit (physical layer processing unit) 10 and an upper layer processing unit 14. The wireless transceiver unit 10 includes at least a part or all of an antenna unit 11, an RF unit 12, and a baseband unit 13. The upper layer processing unit 14 includes at least a part or all of a media access control layer processing unit 15 and a radio resource control layer processing unit 16.

[0081] The wireless transceiver unit 10 includes at least a part or all of a wireless transmission unit 10a and a wireless reception unit 10b. Here, the device configurations of the baseband unit 13 included in the wireless transmission unit 10a and the baseband unit 13 included in the wireless reception unit 10b may be the same or different. In addition, the device configurations of the RF unit 12 included in the wireless transmission unit 10a and the RF unit 12 included in the wireless reception unit 10b may be the same or different. In addition, the device configurations of the antenna unit 11 included in the wireless transmission unit 10a and the antenna unit 11 included in the wireless reception unit 10b may be the same or different.

[0082] For example, the wireless transmission unit 10a may generate and transmit a baseband signal of a PRACH. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUCCH. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUSCH. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUCCH DMRS. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a PUSCH DMRS. For example, the wireless transmission unit 10a may also generate and transmit a baseband signal of a ULPTRS. For example, the wireless transmission unit 10a may further generate and transmit a baseband signal of an SRS.

[0083] For example, the wireless receiving unit 10b can receive and demodulate the PDSCH. For example, the wireless receiving unit 10b can also receive and demodulate the PDCCH. For example, the wireless receiving unit 10b can also receive and demodulate the PBCH. For example, the wireless receiving unit 10b can also receive synchronization signals. For example, the wireless receiving unit 10b can also receive PDSCH DMRS. For example, the wireless receiving unit 10b can also receive PDCCH DMRS. For example, the wireless receiving unit 10b can also receive CSI-RS. For example, the wireless receiving unit 10b can further receive DLPTRS.

[0084] The upper layer processing unit 14 outputs uplink data (transport block) to the wireless transceiver unit 10 (or the wireless transmitting unit 10a). The upper layer processing unit 14 performs processing of the MAC layer, packet data convergence protocol layer, radio link control layer, and RRC layer.

[0085] The media access control layer processing unit 15 included in the upper layer processing unit 14 performs MAC layer processing.

[0086] The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs RRC layer processing. The radio resource control layer processing unit 16 manages various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 16 sets RRC parameters based on the RRC message received from the base station device 3.

[0087] The wireless transceiver unit 10 (or the wireless transmitting unit 10a) performs processing such as modulation and coding. The wireless transceiver unit 10 (or the wireless transmitting unit 10a) generates a physical signal by modulating, coding, and generating a baseband signal (conversion to a time-continuous signal) for the uplink data, and transmits it to the base station device 3. The wireless transceiver unit 10 (or the wireless transmitting unit 10a) can configure the physical signal to a certain BWP (activate uplink BWP) and transmit it to the base station device 3.

[0088] The wireless transceiver unit 10 (or the wireless receiving unit 10b) performs processing such as demodulation and decoding. The wireless transceiver unit 10 (or the wireless receiving unit 30b) can receive a physical signal in a certain BWP (activate downlink BWP) of a certain serving cell. The wireless transceiver unit 10 (or the wireless receiving unit 10b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. The wireless transceiver unit 10 (wireless receiving unit 10b) can perform a channel access process before the transmission of the physical signal.

[0089] The RF unit 12 converts the signal received through 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 13.

[0090] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes the part equivalent to the CP (Cyclic Prefix) from the converted digital signal, performs a fast Fourier transform (FFT: Fast Fourier Transform) on the signal after removing the CP, and extracts the signal in the frequency domain.

[0091] The baseband unit 13 performs an inverse fast Fourier transform (IFFT: Inverse Fast Fourier Transform) on the uplink data to generate an OFDM symbol, attaches a CP to the generated OFDM symbol to generate a digital signal in the baseband, and converts the digital signal in the baseband into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0092] The RF unit 12 uses a low-pass filter to remove the redundant frequency components from the analog signal input from the baseband unit 13, up-converts the analog signal to the carrier frequency, and transmits it via the antenna unit 11. In addition, the RF unit 12 may also have a function of controlling the transmission power. The RF unit 12 is also referred to as the transmission power control unit.

[0093] Hereinafter, the physical signal (signal) will be described.

[0094] The physical signal is the general term for the downlink physical channel, the downlink physical signal, the uplink physical channel, and the uplink physical channel. The physical channel is the general term for the downlink physical channel and the uplink physical channel. The physical signal is the general term for the downlink physical signal and the uplink physical signal. The physical signal may also be referred to as a reference signal.

[0095] The uplink physical channel may correspond to a set of resource elements for transmitting the information generated in the higher layer. The uplink physical channel may be a physical channel used in the uplink component carrier. The uplink physical channel may be transmitted by the terminal device 1. The uplink physical channel may be received by the base station device 3. At least a part or all of the following uplink physical channels may be used in the wireless communication system of one aspect of the present embodiment. · PUCCH (Physical Uplink Control CHannel) · PUSCH (Physical Uplink Shared CHannel) ·PRACH (Physical Random Access CHannel)

[0096] The PUCCH can be used to transmit uplink control information (UCI: Uplink Control Information). The PUCCH can be sent to deliver uplink control information. The uplink control information can be mapped to the PUCCH. The terminal device 1 can send the PUCCH configured with uplink control information. The base station device 3 can receive the PUCCH configured with uplink control information.

[0097] The uplink control information (uplink control information bits, uplink control information sequences, uplink control information types) at least includes part or all of the channel state information (CSI: Channel State Information), scheduling request (SR: Scheduling Request), and HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) information.

[0098] The channel state information is also referred to as channel state information bits or channel state information sequences. The scheduling request is also referred to as scheduling request bits or scheduling request sequences. The HARQ-ACK information is also referred to as HARQ-ACK information bits or HARQ-ACK information sequences.

[0099] The HARQ-ACK information can at least include the HARQ-ACK corresponding to the transport block (TB: Transport block). The HARQ-ACK can indicate the ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to the transport block. The ACK can indicate that the decoding of the transport block has been successfully completed. The NACK can indicate that the decoding of the transport block has not been successfully completed. The HARQ-ACK information can also include a HARQ-ACK codebook containing one or more HARQ-ACK bits.

[0100] A transport block is a sequence of information bits delivered from the upper layer. Among them, the sequence of information bits is also called a bit sequence. Among them, the transport block can be delivered via the UL-SCH (UpLink-Shared Channel) of the Transport layer.

[0101] There is a case where the HARQ-ACK for a transport block is called the HARQ-ACK for the PDSCH. In this case, "the HARQ-ACK for the PDSCH" means the HARQ-ACK for the transport block included in the PDSCH.

[0102] The HARQ-ACK can also represent an ACK or NACK corresponding to one CBG (Code Block Group) included in the transport block.

[0103] The scheduling request can be used at least to request resources for the UL-SCH for an initial transmission. The scheduling request bit can be used to represent either a positive SR (positive SR) or a negative SR (negative SR). When the scheduling request bit represents a positive SR, it is also called "transmitting a positive SR". A positive SR can represent the resources of the UL-SCH requested by the terminal device 1 for an initial transmission. A positive SR can also represent that the scheduling request is triggered by the upper layer. When it is indicated that the scheduling request is sent by the upper layer, a positive SR can be transmitted. When the scheduling request bit represents a negative SR, it is also called "a negative SR is sent". A negative SR can represent that the resources of the UL-SCH for an initial transmission are not requested by the terminal device 1. A negative SR can also represent that the scheduling request is not triggered by the upper layer. When it is not indicated that the scheduling request is sent by the upper layer, a negative SR can be transmitted.

[0104] The channel state information can include at least a part or all of a channel quality indicator (CQI: Channel Quality Indicator), a precoding matrix indicator (PMI: Precoder Matrix Indicator), and a rank indicator (RI: Rank Indicator). The CQI is an indicator associated with the quality of the transmission path (such as transmission strength) or the quality of the physical channel. The PMI is an indicator associated with precoding. The RI is an indicator associated with the transmission rank (or the number of transmission layers).

[0105] The channel state information is an indicator of the reception state of at least a physical signal (such as CSI-RS) used for channel measurement. The value of the channel state information can be determined by the terminal device 1 based on the assumed reception state of at least the physical signal used for channel measurement. The channel measurement can include interference measurement.

[0106] The PUCCH can correspond to a PUCCH format. The PUCCH can be a set of resource elements for transmitting the PUCCH format. The PUCCH can include the PUCCH format. The PUCCH can be sent in a certain PUCCH format. It should be noted that the PUCCH format can be interpreted as an information format. In addition, the PUCCH format can also be interpreted as a set of information set in a certain information format.

[0107] The PUSCH can also be used to transmit one or both of a transport block and uplink control information. The transport block can be configured in the PUSCH. The transport block distributed by the UL-SCH can be configured in the PUSCH. The uplink control information can be configured in the PUSCH. The terminal device 1 can send a PUSCH configured with one or both of the transport block and uplink control information. The base station device 3 can receive a PUSCH configured with one or both of the transport block and uplink control information.

[0108] The PRACH can also be sent to transmit a random access preamble. The terminal device 1 can send the PRACH. The base station device 3 can receive the PRACH. The sequence x u,v (n) of the PRACH is defined by x u,v (n) = x u (mod(n + C v , L RA ))). Where x u is a ZC (Zadoff Chu) sequence. In addition, x u can be defined by x u = exp(-jπui(i + 1) / L RA ). j is the imaginary unit. In addition, π is the circumference ratio. In addition, C v corresponds to the cyclic shift of the PRACH sequence. In addition, L RA corresponds to the length of the PRACH sequence. In addition, L RA is 839 or 139. In addition, i is an integer in the range from 0 to L RA - 1. In addition, u is the sequence index of the PRACH sequence.

[0109] Sixty-four random access preambles are defined for each PRACH opportunity. The random access preamble is determined based on the cyclic shift C v of the PRACH sequence and the sequence index u of the PRACH sequence. An index can be added to each of the determined 64 random access preambles.

[0110] The uplink physical signal may correspond to a set of resource elements. The uplink physical signal may not be used to transmit information generated at the upper layer. It should be noted that the uplink physical signal may also be used to transmit information generated at the physical layer. The uplink physical signal may be a physical signal used in an uplink component carrier. The terminal device 1 may transmit the uplink physical signal. The base station device 3 may receive the uplink physical signal. At least a part or all of the following uplink physical signals may be used in the wireless communication system according to one aspect of the present embodiment. · UL DMRS (UpLink Demodulation Reference Signal) · SRS (Sounding Reference Signal) · UL PTRS (UpLink Phase Tracking Reference Signal)

[0111] UL DMRS is a general term for the DMRS for PUSCH and the DMRS for PUCCH.

[0112] The set of antenna ports of the DMRS for PUSCH (the DMRS associated with PUSCH, the DMRS included in PUSCH, the DMRS corresponding to PUSCH) may be given based on the set of antenna ports of the PUSCH. For example, the set of antenna ports of the DMRS for PUSCH may be the same as the set of antenna ports of the PUSCH.

[0113] The transmission of PUSCH and the transmission of the DMRS for the PUSCH may be represented (or scheduled) by one DCI format. PUSCH and the DMRS for the PUSCH may be collectively referred to as PUSCH. Transmitting PUSCH may also be transmitting PUSCH and the DMRS for the PUSCH.

[0114] The propagation path of PUSCH may be estimated based on the DMRS for the PUSCH.

[0115] The set of antenna ports of the DMRS for PUCCH (the DMRS associated with PUCCH, the DMRS included in PUCCH, the DMRS corresponding to PUCCH) may be the same as the set of antenna ports of PUCCH.

[0116] The transmission of PUCCH and the transmission of DMRS for the PUCCH can be indicated (or triggered) by a DCI format. One or both of the mapping of PUCCH to resource elements (resource element mapping) and the mapping of DMRS for the PUCCH to resource elements can be provided in a PUCCH format. PUCCH and DMRS for the PUCCH can be collectively referred to as PUCCH. Transmitting PUCCH can also be transmitting PUCCH and DMRS for the PUCCH.

[0117] The propagation path of PUCCH can be estimated by DMRS for the PUCCH.

[0118] The downlink physical channel can correspond to a set of resource elements that carry information generated at the upper layer. The downlink physical channel can be a physical channel used in a downlink component carrier. The base station device 3 can transmit the downlink physical channel. The terminal device 1 can receive the downlink physical channel. At least a part or all of the following downlink physical channels can be used in a wireless communication system according to one aspect of the present embodiment. ·PBCH (Physical Broadcast Channel) ·PDCCH (Physical Downlink Control Channel) ·PDSCH (Physical Downlink Shared Channel)

[0119] PBCH can transmit one or both of the MIB (Master Information Block) and physical layer control information. Here, the physical layer control information is information generated at the physical layer. The MIB is a set of parameters configured in the BCCH (Broadcast Control Channel), which is a logical channel of the MAC layer. The BCCH is configured in the BCH, which is a channel of the transport layer. The BCH can be configured (mapped) to the PBCH. The terminal device 1 can receive the PBCH configured with one or both of the MIB and physical layer control information. The base station device 3 can transmit the PBCH configured with one or both of the MIB and physical layer control information.

[0120] For example, the physical layer control information can be composed of 8 bits. The physical layer control information can include at least a part or all of the following 0A to 0D. 0A) Radio frame bits 0B) Semi-wireless frame (semi-system frame, half frame) bits 0C) SS / PBCH block index bits 0D) Subcarrier offset bits

[0121] The wireless frame bits are used to indicate the wireless frame in which the PBCH is transmitted (including the wireless frame of the time slot in which the PBCH is transmitted). The wireless frame bits include 4 bits. The wireless frame bits can be composed of 4 bits in a 10-bit wireless frame indicator. For example, the wireless frame indicator can be used at least to determine the wireless frames with indices 0 to 1023.

[0122] The semi-wireless frame bits are used to indicate whether the PBCH is transmitted in the first half of 5 subframes or the second half of 5 subframes in the wireless frame in which the PBCH is transmitted. Here, the semi-wireless frame can be configured to include 5 subframes. In addition, the semi-wireless frame can be composed of the first half of 5 subframes among the 10 subframes included in the wireless frame. In addition, the semi-wireless frame can also be composed of the second half of 5 subframes among the 10 subframes included in the wireless frame.

[0123] The SS / PBCH block index bits are used to indicate the SS / PBCH block index. The SS / PBCH block index bits include 3 bits. The SS / PBCH block index bits can also be composed of 3 bits in a 6-bit SS / PBCH block index indicator. The SS / PBCH block index indicator can be used at least to determine the SS / PBCH blocks with indices 0 to 63.

[0124] The subcarrier offset bits are used to indicate the subcarrier offset. The subcarrier offset can also be used to indicate the difference between the subcarrier where the starting point of the mapped PBCH is located and the subcarrier where the starting point of the control resource set with index 0 is mapped.

[0125] The PDCCH can be used to transmit downlink control information (DCI: Downlink Control Information). The downlink control information can be configured on the PDCCH. The terminal device 1 can receive the PDCCH configured with the downlink control information. The base station device 3 can transmit the PDCCH configured with the downlink control information.

[0126] The downlink control information can be transmitted with an attached DCI format. It should be noted that the DCI format can be interpreted as the format of the downlink control information. In addition, the DCI format can also be interpreted as a set of downlink control information set in a certain downlink control information format.

[0127] DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats. The uplink DCI formats are the general terms for DCI format 0_0 and DCI format 0_1. The downlink DCI formats are the general terms for DCI format 1_0 and DCI format 1_1.

[0128] DCI format 0_0 is at least used for configuring the PUSCH scheduling in a certain cell. DCI format 0_0 is configured to include at least a part or all of the fields from 1A to 1E. 1A) DCI format specific field (Identifier field for DCI formats) 1B) Frequency domain resource assignment field 1C) Time domain resource assignment field 1D) Frequency hopping flag field 1E) MCS field (MCS field: Modulation and Coding Scheme field: modulation and coding scheme field)

[0129] The DCI format specific field can indicate whether the DCI format including this DCI format specific field is an uplink DCI format or a downlink DCI format. That is, the DCI format specific field can be included in each uplink DCI format and downlink DCI format. Among them, the DCI format specific field included in DCI format 0_0 can represent 0.

[0130] The frequency domain resource assignment field included in DCI format 0_0 can be used to represent the frequency resource allocation of PUSCH.

[0131] The time domain resource assignment field included in DCI format 0_0 can be used to represent the time resource allocation of PUSCH.

[0132] The frequency hopping flag field can be used to indicate whether frequency hopping is applied to PUSCH.

[0133] The MCS field included in DCI format 0_0 can be used to represent at least one or both of the modulation mode and the target coding rate of the PUSCH. The target coding rate can be the target coding rate of the transport block configured in the PUSCH. The size (TBS: Transport Block Size) of the transport block configured in the PUSCH can be determined based on one or both of the target coding rate and the modulation mode of the PUSCH.

[0134] DCI format 0_0 may also not include a field for CSI request.

[0135] DCI format 0_0 may also not include a carrier indicator field. That is, the serving cell to which the uplink component carrier of the PUSCH scheduled by DCI format 0_0 is configured and the serving cell of the uplink component carrier in which the PDCCH including this DCI format 0_0 is configured can be the same. The terminal device 1 can, based on detecting DCI format 0_0 in a certain downlink component carrier of a certain serving cell, identify that the PUSCH to be scheduled by this DCI format 0_0 is configured on the uplink component carrier of this certain serving cell.

[0136] DCI format 0_0 may also not include a BWP field (BWP indication field). Here, DCI format 0_0 can be a DCI format that schedules the PUSCH without changing the active uplink BWP. The terminal device 1 can, based on detecting DCI format 0_0 for PUSCH scheduling, identify that the PUSCH is sent without switching the active uplink BWP.

[0137] DCI format 0_1 is at least used for PUSCH scheduling configured in a certain cell. DCI format 0_1 is configured to include at least a part or all of the fields from 2A to 2H. 2A) DCI format designation field 2B) Frequency domain resource allocation field 2C) Uplink time domain resource allocation field 2D) Frequency hopping flag field 2E) MCS field 2F) CSI request field 2G) BWP field 2H) Carrier indicator field

[0138] The DCI format specific field included in DCI format 0_1 can represent 0.

[0139] The frequency-domain resource allocation field included in DCI format 0_1 can be used to indicate the frequency resource allocation for PUSCH.

[0140] The time-domain resource allocation field included in DCI format 0_1 can be used to indicate the time resource allocation for PUSCH.

[0141] The MCS field included in DCI format 0_1 can be used to at least indicate a part or all of the modulation scheme and / or target coding rate for PUSCH.

[0142] The BWP field of DCI format 0_1 can be used to indicate the uplink BWP configured with the PUSCH scheduled by this DCI format 0_1. That is, DCI format 0_1 can vary according to the activated uplink BWP. The terminal device 1 can identify the uplink BWP configured with the PUSCH based on detecting DCI format 0_1 for PUSCH scheduling.

[0143] DCI format 0_1 that does not include the BWP field can be the DCI format for scheduling PUSCH without changing the activated uplink BWP. The terminal device 1 is DCI format 0_1 for PUSCH scheduling, and can identify that the PUSCH is transmitted without switching the activated uplink BWP based on detecting DCI format D0_1 that does not include the BWP field.

[0144] DCI format 0_1 includes the BWP field, but in the case where the terminal device 1 does not support the function of switching the BWP through DCI format 0_1, the terminal device 1 can ignore the BWP field. That is, the terminal device 1 that does not support the BWP switching function is DCI format 0_1 for PUSCH scheduling, and can identify that the PUSCH is transmitted without switching the activated uplink BWP based on detecting DCI format 0_1 that includes the BWP field. Among them, in the case where the terminal device 1 supports the BWP switching function, during the function information reporting process of the RRC layer, "the terminal device 1 supports the BWP switching function" can be reported.

[0145] The CSI request field is used to indicate the reporting of CSI.

[0146] Alternatively, in the case where the carrier indicator field is included in DCI format 0_1, the carrier indicator field is used to indicate the uplink component carrier configured with PUSCH. Alternatively, in the case where the carrier indicator field is not included in DCI format 0_1, the uplink component carrier configured with PUSCH is the same as the uplink component carrier of the PDCCH configured with DCI format 0_1 including the scheduling for the PUSCH. Alternatively, in the case where the number of uplink component carriers assigned to the terminal device 1 in a certain serving cell group is 2 or more (in the case of using uplink carrier aggregation in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 0_1 for scheduling the PUSCH configured for the certain serving cell group is 1 bit or more (for example, 3 bits). Alternatively, in the case where the number of uplink component carriers assigned to the terminal device 1 in a certain serving cell group is 1 (in the case of not using uplink carrier aggregation in a certain serving cell group), the number of bits of the carrier indicator field included in DCI format 0_1 for scheduling the PUSCH configured for the certain serving cell group is 0 (or alternatively, the carrier indicator field is not included in DCI format 0_1 for scheduling the PUSCH configured for the certain serving cell group).

[0147] DCI format 1_0 is at least used to configure PDSCH scheduling in a certain cell. DCI format 1_0 is configured to include at least a part or all of 3A to 3F. 3A) DCI format specific field 3B) Frequency domain resource allocation field 3C) Time domain resource allocation field 3D) MCS field 3E) PDSCH_HARQ feedback timing indicator field 3F) PUCCH resource indicator field

[0148] The DCI format specific field included in DCI format 1_0 may represent 1.

[0149] The frequency domain resource allocation field included in DCI format 1_0 may be at least used to indicate the allocation of the frequency resources for PDSCH.

[0150] The time domain resource allocation field included in DCI format 1_0 may be at least used to indicate the allocation of the time resources for PDSCH.

[0151] The MCS field included in DCI format 1_0 can be used to represent at least one or both of the modulation mode and the target coding rate for the PDSCH. The target coding rate can be the target coding rate for the transport block configured in the PDSCH. The size of the transport block (TBS: Transport Block Size) configured in the PDSCH can be determined based on one or both of the target coding rate and the modulation mode for the PDSCH.

[0152] The PDSCH_HARQ feedback timing indication field can be used to represent the offset from the time slot of the last OFDM symbol containing the PDSCH to the time slot of the OFDM symbol containing the start point of the PUCCH.

[0153] The PUCCH resource indication field can be a field indicating any index of one or more PUCCH resources included in the PUCCH resource set. The PUCCH resource set can include one or more PUCCH resources.

[0154] DCI format 1_0 may also not include a carrier indicator field. That is to say, the downlink component carrier configured with the PDSCH scheduled by DCI format 1_0 can be the same as the downlink component carrier configured with the PDCCH including this DCI format 1_0. The terminal device 1 can identify that the PDSCH scheduled by this DCI format 1_0 is configured on this downlink component carrier based on detecting DCI format 1_0 in a certain downlink component carrier.

[0155] DCI format 1_0 may also not include a BWP field. Among them, DCI format 1_0 can be the DCI format for scheduling the PDSCH without changing the active downlink BWP. The terminal device 1 can identify that the PDSCH is received without switching the active downlink BWP based on detecting DCI format 1_0 for PDSCH scheduling.

[0156] DCI format 1_1 is at least used for PDSCH scheduling configured in a certain cell. DCI format 1_1 can include at least a part or all of 4A to 4I. 4A) DCI format designation field 4B) Frequency domain resource allocation field 4C) Time domain resource allocation field 4E) MCS field 4F) PDSCH_HARQ feedback timing indication field 4G) PUCCH resource indicator field 4H) BWP field 4I) Carrier indicator field

[0157] The DCI format specific fields included in DCI format 1_1 can represent 1.

[0158] The frequency domain resource allocation field included in DCI format 1_1 can be used at least to indicate the allocation of frequency resources for the PDSCH.

[0159] The time domain resource allocation field included in DCI format 1_1 can be used at least to indicate the allocation of time resources for the PDSCH.

[0160] The MCS field included in DCI format 1_1 can be used at least to represent one or both of the modulation scheme and the target coding rate for the PDSCH.

[0161] Alternatively, in the case where the PDSCH_HARQ feedback timing indication field is included in DCI format 1_1, the PDSCH_HARQ feedback timing indication field is used at least to indicate the offset from the time slot of the last OFDM symbol including the PDSCH to the time slot of the OFDM symbol including the start point of the PUCCH. Alternatively, in the case where the PDSCH_HARQ feedback timing indication field is not included in DCI format 1_1, the offset from the time slot of the last OFDM symbol including the PDSCH to the time slot of the OFDM symbol including the start point of the PUCCH is determined by a parameter of the upper layer.

[0162] The PUCCH resource indication field can be a field indicating any index of one or more PUCCH resources included in the PUCCH resource set.

[0163] The BWP field of DCI format 1_1 can be used to represent the downlink BWP configured with the PDSCH scheduled by this DCI format 1_1. That is, DCI format 1_1 can vary according to the activated downlink BWP. The terminal device 1 can identify the downlink BWP configured with the PUSCH based on detecting DCI format 1_1 for PDSCH scheduling.

[0164] DCI format 1_1 that does not include the BWP field can be a DCI format that schedules the PDSCH without changing the activated downlink BWP. The terminal device 1 is DCI format 1_1 for PDSCH scheduling, and can identify receiving the PDSCH without switching the activated downlink BWP based on detecting DCI format 1_1 that does not include the BWP field.

[0165] The DCI format 1_1 contains a BWP field. However, when the terminal device 1 does not support the function of switching the BWP through the DCI format 1_1, the terminal device 1 can ignore the BWP field. That is, the terminal device 1 that does not support the BWP switching function is for the DCI format 1_1 used for PDSCH scheduling, and can identify that the PDSCH is received without switching the active downlink BWP based on detecting the DCI format 1_1 containing the BWP field. Among them, when the terminal device 1 supports the BWP switching function, during the function information reporting process in the RRC layer, it can report that "the terminal device 1 supports the BWP switching function".

[0166] Alternatively, when the DCI format 1_1 includes a carrier indicator field, the carrier indicator field is used to indicate the downlink component carrier configured with the PDSCH. Alternatively, when the DCI format 1_1 does not include a carrier indicator field, the downlink component carrier configured with the PDSCH is the same as the downlink component carrier of the PDCCH configured with the DCI format 1_1 used for the scheduling of the PDSCH. Alternatively, when the number of downlink component carriers assigned to the terminal device 1 in a certain serving cell group is 2 or more (when carrier aggregation of the downlink is applied in a certain serving cell group), the number of bits of the carrier indicator field included in the DCI format 1_1 used for the scheduling of the PDSCH configured for the certain serving cell group is 1 bit or more (for example, 3 bits). Alternatively, when the number of downlink component carriers assigned to the terminal device 1 in a certain serving cell group is 1 (when carrier aggregation of the downlink is not applied in a certain serving cell group), the number of bits of the carrier indicator field included in the DCI format 1_1 used for the scheduling of the PDSCH configured for the certain serving cell group is 0 (or, alternatively, the DCI format 1_1 used for the scheduling of the PDSCH configured for the certain serving cell group does not include a carrier indicator field).

[0167] The PDSCH can be sent to transfer the transport block. The PDSCH can also be used to send the transport block distributed by the DL-SCH. The PDSCH can be used to transfer the transport block. The transport block can be configured in the PDSCH. The transport block corresponding to the DL-SCH can also be configured in the PDSCH. The base station device 3 can send the PDSCH. The terminal device 1 can receive the PDSCH.

[0168] The downlink physical signal may correspond to a set of resource elements. The downlink physical signal may also not carry information generated at the upper layer. The downlink physical signal may be a physical signal used in a downlink component carrier. The downlink physical signal may be transmitted by the base station device 3. The downlink physical signal may also be transmitted by the terminal device 1. In the wireless communication system of one aspect of the present embodiment, at least a part or all of the following downlink physical signals may be used. · Synchronization signal (SS: Synchronization signal) · DL DMRS (DownLink DeModulation Reference Signal: Downlink demodulation reference signal) · CSI-RS (Channel State Information-Reference Signal: Channel state information reference signal) · DL PTRS (DownLink Phase Tracking Reference Signal: Downlink phase tracking reference signal)

[0169] The synchronization signal may be used for the terminal device 1 to perform synchronization in one or both of the frequency domain and the time domain of the downlink. The synchronization signal is a general term for the PSS (Primary Synchronization Signal) and the SSS (Secondary Synchronization Signal).

[0170] Figure 7 FIG. is a diagram showing a configuration example of an SS / PBCH block according to one aspect of the present embodiment. In Figure 7 , the horizontal axis is the time axis (OFDM symbol index l sym ), and the vertical axis represents the frequency domain. In addition, block 700 represents a set of resource elements for the PSS. In addition, block 702 represents a set of resource elements for the SSS. In addition, four blocks (blocks 710, 711, 712, and 713) represent a set of resource elements for the PBCH and the DMRS for the PBCH (DMRS associated with the PBCH, DMRS included in the PBCH, DMRS corresponding to the PBCH).

[0171] As Figure 7As shown, the SS / PBCH block includes PSS, SSS, and PBCH. In addition, the SS / PBCH block includes 4 consecutive OFDM symbols. The SS / PBCH block includes 240 subcarriers. PSS is configured on subcarriers 57 to 183 in the first OFDM symbol. SSS is configured on subcarriers 57 to 183 in the third OFDM symbol. Subcarriers 1 to 56 in the first OFDM symbol can be set to zero. Subcarriers 184 to 240 in the first OFDM symbol can also be set to zero. Subcarriers 49 to 56 in the third OFDM symbol can also be set to zero. Subcarriers 184 to 192 in the third OFDM symbol can also be set to zero. PBCH is configured on subcarriers 1 to 240 in the second OFDM symbol that are not configured with DMRS for PBCH. PBCH is configured on subcarriers 1 to 48 in the third OFDM symbol that are not configured with DMRS for PBCH. PBCH is configured on subcarriers 193 to 240 in the third OFDM symbol that are not configured with DMRS for PBCH. PBCH is configured on subcarriers 1 to 240 in the fourth OFDM symbol that are not configured with DMRS for PBCH.

[0172] The antenna ports of PSS, SSS, PBCH, and DMRS for PBCH can be the same.

[0173] PBCH that transmits the symbols of PBCH in a certain antenna port can be estimated based on the DMRS for PBCH that is configured for the time slot mapping the PBCH and included in the SS / PBCH block that includes the PBCH.

[0174] DL DMRS is the general term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.

[0175] The set of antenna ports of DMRS for PDSCH (DMRS associated with PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) can be given based on the set of antenna ports for the PDSCH. That is, the set of antenna ports of DMRS for PDSCH can be the same as the set of antenna ports for the PDSCH.

[0176] The transmission of PDSCH and the transmission of DMRS for the PDSCH can be indicated (or scheduled) by one DCI format. PDSCH and DMRS for the PDSCH can be collectively referred to as PDSCH. Transmitting PDSCH can also mean transmitting PDSCH and DMRS for the PDSCH.

[0177] The transmission path of the PDSCH can be estimated based on the DMRS for the PDSCH. If the set of resource elements for transmitting the symbols of a certain PDSCH and the set of resource elements for transmitting the symbols of the DMRS for the certain PDSCH are included in the same precoding resource group (PRG: Precoding Resource Group), then the PDSCH for transmitting the symbols of the certain PDSCH in a certain antenna port can be estimated based on the DMRS for the PDSCH.

[0178] The antenna port for the DMRS associated with the PDCCH (DMRS associated with the PDCCH, DMRS included in the PDCCH, DMRS corresponding to the PDCCH) can be the same as the antenna port for the PDCCH.

[0179] The PDCCH can be estimated based on the DMRS for the PDCCH. That is, the transmission path of the PDCCH can be estimated based on the DMRS for the PDCCH. If the same precoding is applied (assumed to be applied, assumed as applied) to the set of resource elements for transmitting the symbols of a certain PDCCH and the set of resource elements for transmitting the symbols of the DMRS for the certain PDCCH, then the PDCCH for transmitting the symbols of the certain PDCCH in a certain antenna port can be estimated based on the DMRS for the PDCCH.

[0180] BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels. The transport channels define the relationship between the physical layer channels and the MAC layer channels (also referred to as logical channels).

[0181] The BCH at the transport layer is mapped to the PBCH at the physical layer. That is, the transport block of the BCH at the transport layer is distributed to the PBCH at the physical layer. In addition, the UL-SCH at the transport layer is mapped to the PUSCH at the physical layer. That is, the transport block of the UL-SCH at the transport layer is distributed to the PUSCH at the physical layer. In addition, the DL-SCH at the transport layer is mapped to the PDSCH at the physical layer. That is, the transport block of the DL-SCH at the transport layer is distributed to the PDSCH at the physical layer.

[0182] One UL-SCH and one DL-SCH can be given for each serving cell. The BCH can be given by the PCell. The BCH can also not be given by the PSCell or SCell.

[0183] In the MAC layer, HARQ (Hybrid Automatic Repeat reQuest) control is performed on each transport block.

[0184] BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel) are logical channels. For example, BCCH is a channel of the RRC layer used to send MIB or system information. In addition, CCCH (Common Control CHannel) can be used to send RRC messages common to multiple terminal devices 1. Here, CCCH can be used, for example, for terminal devices 1 that are not RRC-connected. In addition, DCCH (Dedicated Control CHannel) can be used at least to send RRC messages dedicated to terminal device 1. Here, DCCH can be used, for example, for terminal device 1 that is RRC-connected.

[0185] Upper layer parameters shared among multiple terminal devices 1 are also referred to as shared upper layer parameters. Among them, the shared upper layer parameters can be defined as parameters specific to the serving cell. Among them, the parameters specific to the serving cell can be parameters shared by the terminal devices (e.g., terminal devices 1-A, B, C) that set the serving cell.

[0186] For example, the shared upper layer parameters can be included in the RRC message distributed to BCCH. For example, the shared upper layer parameters can be included in the RRC message distributed to DCCH.

[0187] Among certain upper layer parameters, upper layer parameters different from the shared upper layer parameters are also referred to as dedicated upper layer parameters. Among them, the dedicated upper layer parameters can provide dedicated RRC parameters to terminal device 1-A that sets the serving cell. That is, the dedicated RRC parameters are upper layer parameters that can provide specific settings for each of terminal devices 1-A, B, C.

[0188] BCCH of the logical channel can be mapped to BCH or DL-SCH of the transport layer. For example, the transport block containing MIB information is distributed to BCH of the transport layer. In addition, the transport block containing system information other than MIB is distributed to DL-SCH of the transport layer. In addition, CCCH is mapped to DL-SCH or UL-SCH. That is, the transport block mapped to CCCH is distributed to DL-SCH or UL-SCH. In addition, DCCH is mapped to DL-SCH or UL-SCH. That is, the transport block mapped to DCCH is distributed to DL-SCH or UL-SCH.

[0189] The RRC message contains one or more parameters managed in the RRC layer. Among them, the parameters managed in the RRC layer are also called RRC parameters. For example, the RRC message may include the MIB. In addition, the RRC message may also include system information. In addition, the RRC message may also include a message corresponding to the CCCH. In addition, the RRC message may also include a message corresponding to the DCCH. The RRC message including the message corresponding to the DCCH is also called a dedicated RRC message.

[0190] The upper layer parameters (parameters of the upper layer) are RRC parameters or parameters included in the MAC CE (Medium Access Control Control Element). That is to say, the upper layer parameters are the general term for the parameters included in the MIB, system information, the message corresponding to the CCCH, the message corresponding to the DCCH, and the MAC CE. The parameters included in the MAC CE are sent through the MAC CE (Control Element) command.

[0191] The process performed by the terminal device 1 includes at least a part or all of the following 5A to 5C. 5A) Cell search 5B) Random access 5C) Data communication

[0192] Cell search is a process for the terminal device 1 to synchronize with a certain cell related to the time domain and frequency domain and detect the physical cell identity. That is to say, the terminal device 1 can synchronize with a certain cell in the time domain and frequency domain through cell search and detect the physical cell identity.

[0193] The sequence of the PSS is given based at least on the physical cell identity. The sequence of the SSS is given based at least on the physical cell identity.

[0194] The SS / PBCH block candidate represents a resource that allows (can, reserves, sets, specifies, has the possibility of) the transmission of the SS / PBCH block.

[0195] The set of SS / PBCH block candidates in a certain semi-wireless frame is also referred to as an SS burst set. The SS burst set is also called a transmission window, an SS transmission window, or a DRS transmission window. The SS burst set is a general term that includes at least a first SS burst set and a second SS burst set.

[0196] The base station device 3 transmits one or more indexed SS / PBCH blocks at a prescribed period. The terminal device 1 can detect at least any one of the one or more indexed SS / PBCH blocks and attempt to decode the PBCH included in the SS / PBCH block.

[0197] Random access is a process that includes at least a part or all of Message 1, Message 2, Message 3, and Message 4.

[0198] Message 1 is a process in which the terminal device 1 transmits a PRACH. The terminal device 1 transmits a PRACH in one PRACH opportunity selected from one or more PRACH opportunities at least based on the index of the SS / PBCH block candidate, where the index of the SS / PBCH block candidate is detected based on cell search. Each PRACH opportunity is defined at least based on time domain resources and frequency domain resources.

[0199] The terminal device 1 transmits a random access preamble selected from the PRACH opportunity corresponding to the index of the SS / PBCH block candidate that detects the SS / PBCH block.

[0200] Message 2 is a process in which the terminal device 1 attempts to detect DCI format 1_0 with a CRC (Cyclic Redundancy Check) scrambled by an RA-RNTI (Random Access-Radio Network Temporary Identifier). The terminal device 1 attempts to detect the PDCCH including this DCI format in the resources indicated based on the settings of the control resource set and the search area set, where the settings of the control resource set and the search area set are given based on the MIB included in the PBCH included in the SS / PBCH block detected based on cell search. Message 2 is also called a random access response.

[0201] Message 3 is a process of transmitting a PUSCH scheduled by a random access response grant included in DCI format 1_0 detected by the process of Message 2. Here, the random access response grant is indicated by a MAC CE included in a PDSCH scheduled by this DCI format 1_0.

[0202] The PUSCH scheduled based on the random access response grant is either a Message 3 PUSCH or a PUSCH. The Message 3 PUSCH includes a contention resolution identifier MAC CE. The contention resolution identifier MAC CE includes a contention resolution identifier.

[0203] The retransmission of the Message 3 PUSCH is scheduled by DCI format 0_0 with a CRC scrambled based on a TC-RNTI (Temporary Cell-Radio Network Temporary Identifier).

[0204] Message 4 is a process of attempting to detect DCI format 1_0 with a CRC scrambled based on either a C-RNTI (Cell-Radio Network Temporary Identifier) or a TC-RNTI. The terminal device 1 receives a PDSCH scheduled based on this DCI format 1_0. This PDSCH may include a contention resolution identifier.

[0205] Data communication is a general term for downlink communication and uplink communication.

[0206] In data communication, the terminal device 1 attempts to detect a PDCCH (monitor the PDCCH, surveil the PDCCH) in a resource determined based on a control resource set and a search space set.

[0207] A control resource set (CORESET) is a set of resources composed of a specified number of resource blocks and a specified number of OFDM symbols. In the frequency domain, the control resource set may be composed of contiguous resources (non-interleaved mapping) or may be composed of scattered resources (interleaver mapping).

[0208] The set of resource blocks constituting the control resource set can be represented by a higher layer parameter. The number of OFDM symbols constituting the control resource set can also be represented by a higher layer parameter.

[0209] The terminal device 1 attempts to detect the PDCCH in a search area set. Here, attempting to detect the PDCCH in a search area set can be attempting to detect candidates of the PDCCH in a search area set, or attempting to detect DCI formats in a search area set, or attempting to detect the PDCCH in a control resource set, or attempting to detect candidates of the PDCCH in a control resource set, or attempting to detect DCI formats in a control resource set.

[0210] The search area set is defined as a set of candidates of the PDCCH. The search area set can be a CSS (Common SearchSpace) set or a USS (UE-specific Search Space) set. The terminal device 1 attempts to detect candidates of the PDCCH in part or all of the Type 0 PDCCH common search space set, Type 0a PDCCH common search space set, Type 1 PDCCH common search space set, Type 2 PDCCH common search space set, Type 3 PDCCH common search space set, and / or the UE-specific PDCCH search area set.

[0211] The Type 0 PDCCH common search space set can be used as the common search space set with index 0. The Type 0 PDCCH common search space set can also be the common search space set with index 0.

[0212] The CSS set is the general term for the Type 0 PDCCH common search space set, Type 0a PDCCH common search space set, Type 1 PDCCH common search space set, Type 2 PDCCH common search space set, and Type 3 PDCCH common search space set. The USS set is also referred to as the UE-specific PDCCH search area set.

[0213] A certain search area set is associated (including, corresponding) with a certain control resource set. The index of the control resource set associated with the search area set can be represented by a higher layer parameter.

[0214] For a certain search area set, at least part or all of 6A to 6C can be represented by a higher layer parameter. 6A) PDCCH monitoring periodicity 6B) PDCCH monitoring pattern within a slot 6C) PDCCH monitoring offset

[0215] The monitoring occasion of a certain search region set can correspond to the OFDM symbol of the OFDM symbol configuring the start point of the control resource set associated with the certain search region set. The monitoring occasion of a certain search region set can also correspond to the resource of the control resource set starting from the OFDM symbol of the start point of the control resource set associated with the certain search region set. The monitoring occasion of the search region set is given based on at least a part or all of the PDCCH monitoring periodicity, the PDCCH monitoring pattern within a slot, and the PDCCH monitoring offset.

[0216] Figure 8 is a diagram showing an example of the monitoring occasion of the search region set representing one aspect of the present embodiment. In Figure 8 , the search region set 91 and the search region set 92 are set in the primary cell 301, the search region set 93 is set in the secondary cell 302, and the search region set 94 is set in the secondary cell 303.

[0217] In Figure 8 , the monochromatic white blocks in the primary cell 301 represent the search region set 91, the monochromatic black blocks in the primary cell 301 represent the search region set 92, the blocks in the secondary cell 302 represent the search region set 93, and the blocks in the secondary cell 303 represent the search region set 94.

[0218] The monitoring periodicity of the search region set 91 is set to 1 slot, the monitoring offset of the search region set 91 is set to 0 slot, and the monitoring pattern of the search region set 91 is set to [1,0,0,0,0,0,0,1,0,0,0,0,0,0]. That is, the monitoring occasion of the search region set 91 corresponds to the OFDM symbol at the start point (OFDM symbol #0) and the 8th OFDM symbol (OFDM symbol #7) in each slot.

[0219] The monitoring periodicity of the search region set 92 is set to 2 slots, the monitoring offset of the search region set 92 is set to 0 slot, and the monitoring pattern of the search region set 92 is set to [1,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is, the monitoring occasion of the search region set 92 corresponds to the OFDM symbol at the start point (OFDM symbol #0) in each even slot.

[0220] The monitoring interval of search area set 93 is set to 2 time slots, the monitoring offset of search area set 93 is set to 0 time slots, and the monitoring mode of search area set 93 is set to [0,0,0,0,0,0,0,1,0,0,0,0,0,0]. That is to say, the monitoring opportunity of search area set 93 corresponds to the 8th OFDM symbol (OFDM symbol #7) in each even time slot.

[0221] The monitoring interval of search area set 94 is set to 2 time slots, the monitoring offset of search area set 94 is set to 1 time slot, and the monitoring mode of search area set 94 is set to [1,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is to say, the monitoring opportunity of search area set 94 corresponds to the starting OFDM symbol (OFDM symbol #0) in each odd time slot.

[0222] The type 0 PDCCH common search area set can be used at least for DCI formats with CRC (Cyclic Redundancy Check) sequences scrambled by SI-RNTI (System Information - Radio Network Temporary Identifier).

[0223] The type 0a PDCCH common search area set can be used at least for DCI formats with CRC (Cyclic Redundancy Check) sequences scrambled by SI-RNTI (System Information - Radio Network Temporary Identifier).

[0224] The type 1 PDCCH common search area set can be used at least for DCI formats with CRC sequences scrambled by RA-RNTI (Random Access - Radio Network Temporary Identifier) and / or CRC sequences scrambled by TC-RNTI (Temporary Cell - Radio Network Temporary Identifier).

[0225] The type 2 PDCCH common search area set can be used for DCI formats with CRC sequences scrambled by P-RNTI (Paging - Radio Network Temporary Identifier).

[0226] Type 3 PDCCH common search space sets can be used for DCI formats appended with CRC sequences scrambled by a C-RNTI (Cell-Radio Network Temporary Identifier).

[0227] UE-specific PDCCH search space sets can be used for at least DCI formats appended with CRC sequences scrambled by a C-RNTI.

[0228] In downlink communication, the terminal device 1 detects a downlink DCI format. The detected downlink DCI format is used for at least resource allocation of the PDSCH. The detected downlink DCI format is also referred to as a downlink assignment. The terminal device 1 attempts to receive the PDSCH. The HARQ-ACK (HARQ-ACK corresponding to the transport block included in the PDSCH) corresponding to the PDSCH is reported to the base station device 3 based on the PUCCH resource, where the PUCCH resource is indicated based on the detected downlink DCI format.

[0229] In uplink communication, the terminal device 1 detects an uplink DCI format. The detected DCI format is used for at least resource allocation of the PUSCH. The detected uplink DCI format is also referred to as an uplink grant. The terminal device 1 transmits the PUSCH.

[0230] In a configured grant, the uplink grant for scheduling the PUSCH is set for each transmission period of the PUSCH. In the case of scheduling the PUSCH by an uplink DCI format, some or all of the information indicated by the uplink DCI format can be represented by a configured uplink grant in the case of a configured grant.

[0231] PUSCH transmission can correspond to a configured scheduling type 1 or a configured scheduling type 2. That is, the configured scheduling can be either the configured scheduling type 1 or the configured scheduling type 2. The PUSCH transmission of the configured scheduling type 1 can also be set semi-statically. For example, the PUSCH transmission of the configured scheduling type 1 can also operate in response to the reception of a certain upper layer parameter. A certain upper layer parameter can be configuredGrantConfig. For example, configuredGrantConfig can include rrc-ConfiguredUplinkGrant. The PUSCH transmission can also operate without detecting an uplink grant in DCI.

[0232] The PUSCH transmission of the configured scheduling type 2 can be scheduled semi-persistently. For example, it can also be scheduled by a certain uplink grant. A certain uplink grant can be included in the activation DCI (activationDCI or valid activation DCI). For example, after receiving a certain upper layer parameter, the PUSCH transmission of the configured scheduling type 2 can also be scheduled by a certain uplink grant. A certain upper layer parameter can be configuredGrantConfig. For example, configuredGrantConfig may not include rrc-ConfiguredUplinkGrant.

[0233] System frame number (SFN) n f can be the number assigned to a radio frame and / or an index for a radio frame. The system frame number can be composed of 10 bits. At least a part of the system frame number can be notified by the MIB. For example, 6 bits (e.g., the 6 most upper bits) in the 10-bit system frame number can be notified by the MIB. At least a part of the system frame number can also be determined based on the PBCH for transmitting the MIB. For example, 4 bits (e.g., the 4 most lower bits) in the 10-bit system frame number can be transmitted by the PBCH transport block as part of channel coding.

[0234] PDCCH-Config can be a dedicated upper layer parameter. PDCCH-Config can set parameters for the PDCCH. Multiple (e.g., up to three) CORESETs can be set in PDCCH-Config. A CORESET ID can be set in one CORESET. A CORESET pool index can be set in one CORESET.

[0235] PDSCH-Config can be a dedicated upper layer parameter. PDSCH-Config can configure the parameters for PDSCH.

[0236] In the case where multiple PDCCH candidates are associated with a search space set configured by upper layer parameters, one PDCCH candidate is used. The one PDCCH candidate can be the PDCCH candidate that starts earlier among two PDCCH candidates. The upper layer parameter can be searchSpaceLinking.

[0237] Multiple TRPs (Transmission Reception Points or Transmit / Receive Points) can be used. The base station device 3 can be composed of multiple TRPs (Multi-TRP). The terminal device 1 can be scheduled by two TRPs in one serving cell. Among multiple TRPs (Multi-TRP), one of the operation modes of single-DCI and multi-DCI can be used. In multiple TRPs, uplink control can be completed in the MAC layer and the physical layer. In multiple TRPs, downlink control can also be completed in the MAC layer and the physical layer. In the single-DCI mode, the terminal device 1 can be scheduled by the same DCI for two TRPs. In the multi-DCI mode, the terminal device 1 can be scheduled by independent DCIs from each TRP. In the multi-DCI mode, each TRP among multiple TRPs can be specified by TRP information. That is, one TRP among multiple TRPs can be identified by one TRP information. The TRP information can be used to select one TRP. In addition, the index of the CORESET resource pool can be associated with one control resource set (CORESET: Control Resource Set). The terminal device 1 can transmit PUSCH based on the index of the CORESET resource pool. The terminal device 1 can also transmit PDCCH and PDSCH based on the index of the CORESET resource pool. The TRP information can also be the CORESET pool index. The TRP information can be given by a TRP indication field.

[0238] The terminal device 1 can set the upper layer parameter TCI-State. For example, the terminal device 1 can set a list in the upper layer parameter PDSCH-Config. A list can include at most M upper layer parameters TCI-State. A list can be a list of at most M upper layer parameters TCI-State. The terminal device 1 can set a list for decoding (receiving) the PDSCH according to the PDCCH with attached DCI. M can depend on the UE capability. For example, M can also depend on the UE capability maxNumberConfiguredTCIStatePerCC. TCI-State can be referred to as the TCI status.

[0239] Each TCI status (i.e., the upper layer parameter TCI-State) can include parameters for setting the QCL (QCL relationship: Quasi co-location relationship). The QCL relationship can be the relationship between one or two downlink reference signals (downlink physical signals) and the DMRS (DMRS port) of the PDSCH. The QCL relationship can also be the relationship between one or two downlink reference signals (downlink physical signals) and the DMRS (DMRS port) of the PDCCH. The QCL relationship can also be the relationship between one or two downlink reference signals (downlink physical signals) and the CSI-RS (CSI-RS port) of a CSI-RS resource. For example, the QCL relationship between channel / signal A and channel / signal B can indicate that channel / signal A and channel / signal B are QCL.

[0240] The QCL relationship can be set by one or both of the upper layer parameter qcl-Type1 and the upper layer parameter qcl-Type2. For example, the QCL relationship can also be set by one or both of the upper layer parameter qcl-Type1 for the first downlink reference signal (DL RS) and the upper layer parameter qcl-Type2 for the second downlink reference signal. In the case where the first downlink reference signal is different from the second downlink reference signal, the QCL type of qcl-Type1 can also be different from the QCL type of qcl-Type2. The QCL type corresponding to each downlink reference signal can be given by the upper layer parameter qcl-Type in the upper layer parameter QCL-Info. The QCL type can be any one of type A, type B, type C, and type D.

[0241] The terminal device 1 can set the upper layer parameter DLorJointTCIState. For example, the terminal device 1 can set a list in the upper layer parameter PDSCH-Config. A list can include up to 128 upper layer parameters DLorJointTCIState. A list can be a list of up to 128 upper layer parameters DLorJointTCIState. A list can be set to provide a reference signal. The upper layer parameter DLorJointTCIState can be set to provide a reference signal. A reference signal can be a reference signal for QCL of DMRS for PDSCH and DMRS for PDCCH. A list can also be set to provide a reference. The upper layer parameter DLorJointTCIState can also be set to provide a reference. A reference can be used to determine the uplink transmission spatial filter (UL TX spatialfilter). The uplink transmission spatial filter can be used for PUSCH, PUCCH, and SRS. That is, a reference can be provided to determine the uplink transmission spatial filter for PUSCH, PUCCH, and SRS. DLorJointTCIState can be referred to as TCI state, DL / Joint TCI state, or Unified TCI state. A list can be dl-OrJoint-TCIStateList.

[0242] The terminal device 1 can set the upper layer parameter UL-TCIState. For example, the terminal device 1 can set a list in the upper layer parameter BWP-UplinkDedicated. A list can include up to 64 upper layer parameters UL-TCIState. A list can be a list of up to 64 upper layer parameters UL-TCIState. Each UL-TCIState (or UL-TCIState setting) can include parameters for setting a reference signal. For example, each UL-TCIState can include a parameter for setting a reference signal, where the reference signal is used to determine the uplink transmission spatial filter for a part or all of PUSCH, PUCCH, and SRS. A list can be the upper layer parameter ul-TCI-StateList. UL-TCIState can be referred to as TCI state, UL TCI state, or Unified TCI state.

[0243] UL-TCIState can also be the upper layer parameter TCI-UL-State. UL-TCIState can be set through the upper layer parameter TCI-UL-State. The upper layer parameter TCI-UL-State can associate one or two downlink reference signals with a corresponding QCL type.

[0244] When setting the DL or Joint TCI State or UL-TCI State, the terminal device 1 can transmit PUSCH according to the spatial relation. For example, the spatial relation can be a relation based on a reference signal (RS). For example, a reference signal can be a reference signal for determining the uplink transmission spatial filter. A reference signal can be a reference signal set by the qcl-Type of type D under the indicated DL or Joint TCI State or the indicated UL-TCI State. The reference RS (Reference RS) in the indicated DL or Joint TCI State can be the CSI-RS resource in the upper layer parameter NZP-CSI-RS-ResourceSet. The reference RS in the indicated UL-TCI State can be the CSI-RS resource in NZP-CSI-RS-ResourceSet. The Indicated UL-TCIState can be the TCI state, UL TCI state, or unified TCI state indicated by DCI format 1_1 or DCI format 1_2. The Indicated DL or Joint TCIState can be the TCI state, DL / Joint TCI state, or unified TCI state indicated by DCI format 1_1 or DCI format 1_2.

[0245] The DL or Joint TCI State (e.g., the upper layer parameter DL or Joint TCI State) and the UL-TCI State (e.g., the upper layer parameter UL-TCI State) can be set in a BWP of a component carrier. In the case where there is no setting of the DL or Joint TCI State or the UL-TCI State in a BWP, the terminal device 1 can apply the setting of the DL or Joint TCI State or the UL-TCI State according to the reference BWP.

[0246] The terminal device 1 may not expect to set both the first upper layer parameter and the second upper layer parameter. The first upper layer parameter may be any one of TCI-State, SpatialRelationInfo, and PUCCH-SpatialRelationInfo. The second upper layer parameter may also be any one of DLorJointTCIState and UL-TCIState. When setting TCI-State in any component carrier in a certain list, the second upper layer parameter may not be set in any component carrier within the same frequency band in the certain list. The certain list may be set by the upper layer parameter simultaneousTCI-UpdateList1, the upper layer parameter simultaaneousTCI-UpdateList2, the upper layer parameter simultaneousSpatial-UpdatedList1, or the upper layer parameter simultaneousSpatial-UpdatedList2.

[0247] The terminal device 1 may receive an activation command. The activation command may be used to map up to 8 "one or both of a TCI state and a TCI state pair" to the code point of the DCI field 'Transmission Configuration Indication'. The TCI state pair may be accompanied by a TCI state (DL TCI state) for multiple downlink channels / signals and a TCI state (UL TCI state) for multiple uplink channels / signals. The multiple downlink channels / signals may be part or all of PDSCH, PDCCH, and CSI-RS. The multiple uplink channels / signals may be part or all of PUSCH, PUCCH, and SRS. The DCI (DCI format) may be composed of one or more DCI fields. For example, the DCI (DCI format) may also be configured to include a TCI field ('Transmission Configuration Indication' field).

[0248] In the case where a first set of one or more TCI state IDs is activated in a second set, the first set can be applied to the downlink BWP in the indicated component carrier. In the case where a first set of one or more TCI state IDs is activated in a third set, the first set can be applied to the downlink BWP and the uplink BWP in the indicated component carrier. The second set can be a set of one or both of one or more component carriers and one or more downlink BWPs. The third set can be a set of a part or all of one or more component carriers, one or more downlink BWPs, and one or more uplink BWPs.

[0249] In the case where an activation command maps one or both of DLorJointTCIState and UL-TCIState to a TCI code point (the code point of the DCI field 'Transmission Configuration Indication'), the terminal device 1 can apply one or both of the indicated DLorJointTCIState and the indicated UL-TCIState.

[0250] The terminal device 1 can receive DCI format 1_1 / 1_2 that provides the indicated DLorJointTCIState or the indicated UL-TCIState. The DCI format may not be accompanied by a downlink allocation. For example, in the case where DCI format 1_1 / 1_2 is not accompanied by a downlink allocation, the terminal device 1 can assume some or all of the following: CS-RNTI is used to scramble the CRC for the DCI; all RV (Redundancy version) are 1; all MCS are 1; NDI is 0; all are set to 0 for FDRA type 0; all are set to 1 for FDRA type 1.

[0251] The terminal device 1 can receive a higher layer setting. After the terminal device 1 receives the first setting of multiple DLorJoint-TCIStates and before applying an indicated TCI state from the set of TCI states, the terminal device 1 can assume that the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS and SS / PBCH block for applying the indicated TCI state are QCL.

[0252] After the terminal device 1 receives the first setting of multiple DL or Joint-TCI States or multiple UL-TCI States and before applying an indicated TCI state from the set of TCI states, the terminal device 1 may also assume that the first uplink transmission spatial filter (UL TX spatial filter) for PUSCH, PUCCH, and SRS for applying the indicated TCI state is the same as the second uplink transmission spatial filter. The second uplink transmission spatial filter may be the uplink transmission spatial filter for PUSCH transmission scheduled by a random access response in the initial access procedure.

[0253] After the terminal device 1 receives the setting of multiple DL or Joint-TCI States and before applying an "indicated TCI state" from the set of TCI states, the DMRS of PDSCH, the DMRS of PDCCH, and CSI-RS for applying the indicated TCI state may be QCL with the SS / PBCH block or the CSI-RS resource. For example, the SS / PBCH block or the CSI-RS resource may be identified in the random access procedure starting with a resynchronization. For example, the terminal device 1 may receive the setting of DL or Joint-TCI State as part of a reconfiguration with sync.

[0254] After the terminal device 1 receives the setting of multiple DL or Joint-TCI States or multiple UL-TCI States and before applying an "indicated TCI state" from the set of TCI states, it may be assumed that the first uplink transmission spatial filter for PUSCH, PUCCH, and SRS for applying the indicated TCI state is the same as the second uplink transmission spatial filter. The second uplink transmission spatial filter may be the uplink transmission spatial filter for PUSCH transmission scheduled by a random access response in the random access procedure starting with a reconfiguration with sync.

[0255] The DLorJoint-TCIState can be used as the "indicated TCI state". For example, the terminal device 1 can obtain QCL assumptions (QCL relationships, QCL) from the "configured TCI state" for the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS to which the "indicated TCI state" is applied. The "indicated TCI state" can be applied to the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS. The "indicated TCI state" can also be applied to the DMRS of the PDSCH, the DMRS of the PDCCH, the CSI-RS, the PUSCH, the PUCCH, and the SRS.

[0256] The UL-TCIState can be used as the "indicated TCI state". For example, the terminal device 1 can determine an uplink transmission spatial filter from the "configured TCI state" for the PUSCH, the PUCCH, and the SRS to which the "indicated TCI state" is applied.

[0257] When the terminal device 1 transmits the first OFDM symbol and the first "indicated TCI state" is different from the second "indicated TCI state", the first "indicated TCI state" can be applied starting from the first time slot. The first OFDM symbol can be the OFDM symbol at the end of the PUCCH carrying HARQ-ACK information. The first OFDM symbol can also be the OFDM symbol at the end of the PUSCH carrying HARQ-ACK information. The HARQ-ACK information can be the HARQ-ACK information corresponding to the DCI that transmits the TCI state indication in the absence of a downlink allocation. The HARQ-ACK information can also be the HARQ-ACK information corresponding to the PDSCH scheduled by the DCI that transmits the TCI state indication. The second indicated TCI state can be indicated before (previously) the first indicated TCI state. The first time slot can be the first time slot at least BeamAppTime symbols after the second OFDM symbol. BeamAppTime can be the number of OFDM symbols. BeamAppTime can be set by a higher layer parameter. BeamAppTime can also be determined by the terminal capability. The second OFDM symbol can be the first OFDM symbol. The indicated TCI state can be the indicated DLorJointTCIState or the indicated UL-TCIState.

[0258] In the case where the upper layer parameter PDCCH-Config includes two different values of the CORESET pool index (CORESET Pool Index or coresetPoolIndex), the terminal device 1 can receive activation commands for the CORESETs associated with each CORESET pool index. The activation commands can be used to map up to 8 TCI states to the code points of the DCI field 'transmission setting indication'. In the case where a set of TCI state IDs is activated for one CORESET pool index, the "activated TCI state" corresponding to the one CORESET pool index can be associated with one physical cell ID, and the "activated TCI state" corresponding to a CORESET pool index different from the one CORESET pool index can be associated with a physical cell ID different from the one physical cell ID. The activation commands can be received as MAC CE. One or more CORESETs can be configured in one BWP. One CORESET can correspond to a CORESET pool index of '0' or '1'.

[0259] One code point of the DCI field 'transmission setting indication' can include 4 TCI states. For example, one of the 4 TCI states can be a combined TCI state. One of the 4 TCI states can also be a DL TCI state. One of the 4 TCI states can also be a UL TCI state. One code point of the DCI field 'transmission setting indication' can include two "TCI state pairs". The TCI state pair can be a pair of a DL TCI state and a UL TCI state. The terminal device 1 can receive activation commands. The activation commands can be used to map up to 8 combinations of 4 or fewer TCI states to the code points of the DCI field 'transmission setting indication'. The activation commands can also be used to map up to 8 combinations of one or two "TCI state pairs" to the code mapping of the DCI field 'transmission setting indication'. The terminal device 1 does not expect to receive more than 8 TCI states in the activation commands. The terminal device 1 also does not expect to receive more than 8 "TCI state pairs" in the activation commands.

[0260] In the case where the terminal device 1 transmits the first PUCCH in the first time slot, the mapping of the TCI state to the code point can be applied starting from the second time slot. The first PUCCH can be attached with the first HARQ-ACK information. The first PUCCH can be transmitted corresponding to the first PDSCH. The first PDSCH can carry the activation commands.

[0261] When the first upper layer parameter is configured, and when the first time offset is greater than or equal to the first value, and after the terminal device 1 receives the first configuration of the TCI state and before receiving the activation command, the DMRS ports of the PDSCH may be QCL with the SS / PBCH block for QCL type A. The first upper layer parameter may be configured for the CORESET that schedules the PDSCH. The CORESET may schedule the PDSCH. The first time offset may be the offset between the reception of the DL DCI and the PDSCH. The first value may be timeDurationForQCL.

[0262] When the first upper layer parameter is configured, the terminal device 1 may assume that there is a TCI field in the DCI format of the PDCCH transmitted in the CORESET. The first upper layer parameter may be tci-PresentInDCI which is set to 'enabled' for the CORESET that schedules the PDSCH or the multicast PDSCH. The first upper layer parameter may also be tci-PresentDCI-1-2.

[0263] When the PDSCH is scheduled by the first DCI format and the time offset is above the threshold, to determine the QCL of the PDSCH antenna ports, the TCI state or QCL assumption for the PDSCH may be the same as the TCI state or QCL assumption applied to the CORESET for the PDCCH. The time offset may be the time offset between the reception of the DL DCI and the corresponding PDSCH. The threshold may be timeDurationForQCL. The first DCI format may not include a TCI field.

[0264] When the first upper layer parameter and the second upper layer parameter are set, and when the time offset is above the threshold, and when DCI scheduling without TCI state is supported, the TCI state or QCL assumption for PDSCH can be the same as the TCI state or QCL assumption applied to the CORESET for receiving DL DCI. This sameness can be independent of the number of active TCI states of the CORESET. When dynamic switching between SFN PDSCH and non-SFN PDSCH is not supported, the terminal device 1 can be activated in a CORESET including two TCI states. When dynamic switching between SFN PDSCH and non-SFN PDSCH is not supported, two "indicated TCI states" can be applied to PDSCH. For example, when dynamic switching between SFN PDSCH and non-SFN PDSCH is not supported, it can be not expected that one "indicated TCI state" is applied to PDSCH. DL DCI can be received in the active BWP of the serving cell. DL DCI can be DCI for a downlink channel (downlink physical channel). SFN PDSCH can be PDSCH to which SFN is applied. The first upper layer parameter can be sfnSchemePdcch. The second upper layer parameter can be sfnSchemePdsch. The time offset can be the time offset between the reception of DL DCI and the corresponding PDSCH. The threshold can be timeDurationForQCL. Setting sfnSchemePdcch can be applying SFN (Single Frequency Network) to PDCCH. The method of applying SFN can be sending the same DMRS port from different panels simultaneously. One beam can correspond to one panel. One TSI state can correspond to one panel.

[0265] When the first upper layer parameter and the second upper layer parameter are not set, and when scheduling is performed by DCI format 1_1 / 1_2, and when the time offset is above the threshold, the terminal device 1 can not expect the existence of a TCI field. The first upper layer parameter can be sfnSchemePdcch. The second upper layer parameter can be sfnSchemePdsch.

[0266] In the case where the PDSCH is scheduled by DCI format 1_0 / 1_1 / 1_2, and when the first upper-layer parameter is set, and when the second upper-layer parameter is not set, and when there is no TCI code point (code point in the TCI field) with two TCI states attached in the activation command, and when the time offset is above the threshold, in the case of the PDSCH indicated by the CORESET scheduling in two TCI states, the TCI state or QCL assumption for the PDSCH can be the first TCI state or QCL assumption applied to the CORESET for the PDCCH. The first upper-layer parameter can be sfnSchemePdcch set to'sfnSchemeA'. The second upper-layer parameter can be sfnSchemePdsch.

[0267] In the case where the time offset is below the threshold, and when at least one of the "configured TCI states" includes a QCL type of type D, some or all of Action 1, Action 2, Action 3, Action 4, and Action 5 can be performed. The time offset can be the time offset between the reception of the DL DCI and the corresponding PDSCH. The threshold can be timeDurationForQCL.

[0268] In Action 1, the DMRS ports of the first PDSCH can be QCL with the first reference signal with respect to the first QCL parameter. The first QCL parameter can be used for the PDCCH QCL indication of the CORESET. The CORESET can be associated with a search area (search area set) attached with the smallest CORESET ID (controlResourceSetId) among one or more CORESETs in the activated BWP. In addition, the CORESET can be the CORESET in the latest time slot among one or more CORESETs in the activated BWP.

[0269] In Action 2, when setting the first upper layer parameter and the second upper layer parameter, the DMRS port of the second PDSCH associated with the first value of the CORESET pool index may be QCL with the reference signal regarding the second QCL parameter. The second QCL parameter may be used for the PDCCH QCL indication of the CORESET. The CORESET may be set by the same CORESET pool index as the PDCCH scheduling the second PDSCH. The CORESET may be associated with the search area attached with the minimum CORESET ID. The CORESET may be the CORESET in the latest time slot. The first upper layer parameter may be enableDefaultTCI-StatePerCoresetPoolIndex. The second upper layer parameter may be the PDCCH-Config including the values of two different CORESET pool indexes (coresetPoolIndex).

[0270] In Action 3, when setting the third upper layer parameter, and when at least one TCI code point indicates two TCI states, the DMRS port of the PDSCH (or PDSCH transmission opportunity) may be QCL with the reference signal regarding the third QCL parameter. The third QCL parameter may be associated with the TCI state corresponding to the minimum code point among the multiple TCI code points. Each of the multiple TCI code points may include two different TCI states. In addition, when setting the fourth upper layer parameter, and when the time offset is below the threshold, the mapping of the TCI state to the PDSCH transmission opportunity may be determined. For example, the "indicated TCI state" attached with the TCI state corresponding to the minimum code point among the multiple TCI code points may be applied to the PDSCH transmission opportunity. One TCI code point may indicate at most 4 TCI states. The third upper layer parameter may be enableTwoDefaultTCI-States. The fourth upper layer parameter may be the repetitionScheme set to 'tdmSchemeA'. The fourth upper layer parameter may be the repetitionNumber. Setting the repetitionScheme for the PDSCH may be applying the TDM (Time Division Multiplexing) method to the PDSCH. The time offset may be the time offset between the reception of the DL DCI and the first PDSCH transmission opportunity.

[0271] In operation 4, in the case where the fifth upper layer parameter is not set, and in the case where the sixth upper layer parameter is set, and in the case where there is no TCI code point with multiple TCI states attached in the activation command, and in the case where the CORESET with the smallest ID is indicated by multiple (e.g., two) TCI states, the DMRS port of the PDSCH may be QCL with the reference signal for the fourth QCL parameter. The fourth QCL parameter may be associated with the first TCI state among the multiple (e.g., two) TCI states indicated for the CORESET. The CORESET may be the CORESET in the latest time slot. The fifth upper layer parameter may be sfnSchemePdsch. The sixth upper layer parameter may be sfnSchemePdcch set to'sfnSchemeA'.

[0272] In operation 5, in the case where the "configured TCI state" for the serving cell of the scheduled PDSCH is not set by the QCL type of type D, the terminal device 1 may obtain a QCL assumption from the "indicated TCI state".

[0273] In the case where a PDCCH carrying a scheduling DCI is received in the first component carrier, and in the case where the PDSCH scheduled by the scheduling DCI is in the second component carrier, the threshold may be determined based on the subcarrier spacing (subcarrier spacing configuration) of the scheduled PDSCH, and an additional time may be added to the threshold. The additional time may be determined based on the subcarrier spacing between the PDCCH and the PDSCH (subcarrier spacing configuration). In the case where a PDCCH carrying a scheduling DCI is received in the first component carrier, and in the case where the PDSCH scheduled by the scheduling DCI is in the second component carrier, and in the case where the first upper layer parameter is set, and in the case where the time offset is below the threshold, the terminal device 1 may obtain a QCL assumption for the scheduled PDSCH from the "activated TCI state" or the "indicated TCI state". The "activated TCI state" or the "indicated TCI state" may have the smallest ID and may be applied to the PDSCH in the activated BWP of the scheduled serving cell. The scheduling DCI may be a DCI scheduling a downlink physical channel or an uplink physical channel. The first upper layer parameter may be enableDefaultBeamForCCS.

[0274] When the first terminal capability is indicated to the terminal device 1, the terminal device 1 may determine a spatial region filter. The spatial region filter may be used while performing an applicable channel access procedure before UL transmission in a channel. When an SRI corresponding to UL transmission is indicated, the terminal device 1 may use the same spatial region filter as the spatial region filter associated with the indicated SRI. The terminal device 1 may use the same spatial region filter as the spatial region filter for receiving a DL reference signal associated with the indicated TCI state. For example, when setting a TCI state setting with DLorJointTCIState or UL-TCIState attached, the terminal device 1 may use the same spatial region filter as the spatial region filter for receiving a DL reference signal associated with the indicated TCI state. The first terminal capability may be beamCorrespondenceWithoutUL-BeamSweeping set to '1'.

[0275] When the PDCCH reception includes two PDCCHs from two associated search space sets and a time offset is determined, PDCCH candidates (candidates for the PDCCH, PDCCH candidate) may be used. The time offset may be the time offset between the reception of the DL DCI and the corresponding PDSCH. The PDCCH candidate may be a PDCCH candidate that ends later in time. When the PDCCH reception includes two PDCCH candidates from two associated search space sets, in the setting of the first upper layer parameter, the terminal device 1 may expect the same setting in the first CORESET and the second CORESET associated with the two PDCCH candidates. The PDCCH reception including two PDCCHs (PDCCH candidates) from two associated search space sets may be the application of search space linking. The application of PDCCH repetition may be the application of a PDCCH reception including two PDCCHs (PDCCH candidates) from two associated search space sets.

[0276] When a periodic CSI-RS (Periodic CSI-RS) resource in the NZP-CSI-RS-ResourceSet is set with the first upper layer parameter attached, the TCI state may indicate one of a plurality of QCL types. The plurality of QCL types may include type C related to the SS / PBCH block. The first upper layer parameter may be trs-Info. The first upper layer parameter may indicate that the antenna ports for all NZP-CSI-RS (Non Zero Power CSI-RS) resources in the CSI-RS resource set are the same.

[0277] It is also possible not to apply the indicated TCI state (e.g., the indicated DL or JointTCIState) in the periodic CSI-RS (Periodic CSI-RS) and semi-persistent CSI-RS (Semi-persistent CSI-RS).

[0278] In the CSI-RS resources in the NZP-CSI-RS resource set (NZP-CSI-RS-ResourceSet) without the first upper-layer parameter and the second upper-layer parameter, the TCI state can indicate one of multiple QCL types. The multiple QCL types can include type A related to the CSI-RS in the NZP-CSI-RS resource set with the first upper-layer parameter attached. The multiple QCL types can include type B related to the CSI-RS in the NZP-CSI-RS resource set with the first upper-layer parameter attached. The first upper-layer parameter can be trs-Info. The second upper-layer parameter can be repetition.

[0279] In the CSI-RS resources in the NZP-CSI-RS resource set with the second upper-layer parameter attached, the TCI state can indicate one of multiple QCL types. The multiple QCL types can include type B related to the CSI-RS in the NZP-CSI-RS resource set with the first upper-layer parameter attached. The multiple QCL types can include type C related to the SS / PBCH block. The second upper-layer parameter can be repetition.

[0280] The DMRS ports of the PDCCH can be QCL with the DL-RS (downlink reference signal) of multiple (e.g., two) TCI states. For example, when the first upper-layer parameter is set and the CORESET is activated by multiple (e.g., two) TCI states, the DMRS ports of the PDCCH in the CORESET can be QCL with the DL-RS of multiple (e.g., two) TCI states. The first upper-layer parameter can be sfnSchemePdcch. The first upper-layer parameter can also be sfnSchemePdcch set with'sfnSchemeA'. The first upper-layer parameter can also be sfnSchemePdcch set with'sfnSchemeB'. The second of the two TCI states may not include the QCL parameters {Doppler frequency shift, Doppler spread}. For example, when the first upper-layer parameter is set and the CORESET is activated by one TCI state, the DMRS ports of the PDCCH in the CORESET can be QCL with the DL-RS of multiple (e.g., two) "indicated TCI states". For example, for example, when the first upper-layer parameter is set, the DMRS ports of the PDCCH in the CORESET are independent of the number of activated TCI states of the CORESET and can be QCL with the DL-RS of multiple (e.g., two) "indicated TCI states". Setting the first upper-layer parameter can be applying the SFN method to the PDCCH.

[0281] For the DMRS of the PDSCH, the TCI state can indicate a QCL type. A QCL type can be type A related to the CSI-RS resources in the NZP-CSI-RS resource set with trs-Info set. For the DMRS of the PDCCH, the TCI state can indicate a QCL type. A QCL type can be type A related to the CSI-RS resources in the NZP-CSI-RS resource set with trs-Info set.

[0282] When the first upper layer parameter is configured, and when multiple (e.g., two) TCI states are indicated, the DMRS ports of the PDSCH can be QCL with the DL-RS of multiple (e.g., two) TCI states. Multiple TCI states can be indicated by a code point of the DCI field 'transmission configuration indication' in the DCI scheduling the PDSCH. The first upper layer parameter can be sfnSchemePdsch. The first upper layer parameter can also be sfnSchemePdsch configured with'sfnSchemeA'. The first upper layer parameter can also be sfnSchemePdsch configured with'sfnSchemeB'. The second of the two TCI states may not include the QCL parameters {Doppler shift, Doppler spread}. When the first upper layer parameter is configured, and when multiple (e.g., two) TCI states are indicated, and when the TRP indication field indicates the third indication or the fourth indication, the DMRS ports of the PDSCH can be QCL with the DL-RS of multiple (e.g., two) TCI states. Configuring the first upper layer parameter can be applying the SFN method for the PDSCH.

[0283] The terminal device 1 can receive the DMRS for the PDSCH scheduled by the PDCCH with an attached DCI format. When two TCI states are indicated and the terminal device 1 receives the DMRS of the PDSCH and the SS / PBCH block in the same OFDM symbol, at least one DMRS port for the PDSCH and the SS / PBCH block can be QCL in type D ('QCL-TypeD'). When the first upper layer parameter is configured, and when multiple PDSCHs are repeated in the time domain / frequency domain by multiple PDCCHs, different DMRS configurations may not be expected, and the DMRS ports within one CDM group may not be indicated by two TCI states either. The first upper layer parameter can be the PDCCH-Config including two different CORESET pool indexes.

[0284] In the downlink, up to 16 or 32 HARQ processes can be supported in one serving cell. The number of HARQ processes can be configured by the upper layer parameter. When the upper layer parameter is not configured, the number of HARQ processes can be 8.

[0285] The terminal device 1 can, in response to the detection of the PDCCH with an attached DCI format, receive (decode) the corresponding PDSCH in the manner indicated by the DCI format.

[0286] The upper layer parameters may include values of two different CORESET pool indices. The PDCCHs scheduling two PDSCHs (the first PDSCH and the second PDSCH) may be associated with CORESETs having different values of the CORESET pool index. The upper layer parameter may be PDCCH-Config. The terminal device 1 may receive the first PDSCH and the second PDSCH.

[0287] The terminal device 1 may assume that the DMRS port of the first PDSCH is QCL with the first SS / PBCH block with respect to the first QCL parameter. The first PDSCH may be scheduled by SI-RNTI, P-RNTI, and G-RNTI for broadcasting. The terminal device 1 may assume that the DMRS port of the second PDSCH is QCL with the second SS / PBCH block or the second CSI-RS resource with respect to the first QCL parameter. The second SS / PBCH block or the second CSI-RS resource may be used for RACH association. The second PDSCH may be scheduled by RA-RNTI, MSGB-RNTI. The terminal device 1 may also assume that the DMRS port of the first PDCCH order and the DMRS port of the third PDSCH are QCL with the second SS / PBCH block or the second CSI-RS resource with respect to the first QCL parameter. The third PDSCH may be scheduled by RA-RNTI with respect to the random access procedure triggered by the first PDCCH order. The first QCL parameter may include some or all of Doppler shift, Doppler spread, average delay, delay spread, spatial RX parameters.

[0288] When the upper layer sets to decode the PDCCH with a CRC scrambled by CS-RNTI, the terminal device 1 may receive the PDSCH in the absence of the corresponding PDCCH.

[0289] When the first upper layer parameter is set, the terminal device 1 may receive multiple PDCCHs. The first upper layer parameter may be PDCCH-Config. The first upper layer parameter may include values of two different CORESET pool indices. The multiple PDCCHs may schedule multiple PDSCHs. The multiple PDSCHs may or may not repeat in the time domain / frequency domain. When the multiple PDCCHs are associated with different CORESETs, the terminal device 1 may receive multiple PDSCHs simultaneously. The different CORESETs may have different values of the coresetPoolIndex.

[0290] In the case where a CORESET (upper layer parameter ControlResourceSet) does not carry a CORESET pool index (upper layer parameter coresetPoolIndex), the terminal device 1 may assume that the CORESET pool index is assigned to the CORESET as 0.

[0291] The first physical cell ID associated with the first CORESET may be different from the second physical cell ID associated with the second CORESET. For example, via the activated TCI state, the first CORESET and the second CORESET may establish associations with different physical cell IDs. The first CORESET and the second CORESET may correspond to different CORESET pool indexes.

[0292] In the case where repetition is set for the PDSCH, it may not be expected to set the first upper layer parameter. The first upper layer parameter may be repetitionScheme. Setting repetition for the PDSCH may be setting repetitionNumber for the PDSCH. Setting the first upper layer parameter may be applying the FDM (Frequency division multiplexing) method, the TDM (Time Division Multiplexing) method, or the SDM (Spatial Division Multiplexing) method.

[0293] In the case where the first upper layer parameter is set, and in the case where multiple (e.g., two) TCI states and one or more DMRS ports are indicated, a part or all of Action 6, Action 7, and Action 8 may be performed. The first upper layer parameter may be repetitionScheme. In repetitionScheme, 'fdmSchemeA', 'fdmSchemeB', or 'tdmSchemeA' may be set. The multiple TCI states may be included in one code point of the DCI field 'transmission setting indication'. The one or more DMRS ports may be DMRS ports within one CDM group. One CDM (Code division multiplexing) group may be indicated by the DCI field 'Antenna Port(s)'.

[0294] In operation 6, when 'fdmSchemeA' is set in the terminal device 1 and a single DCI indicates multiple (e.g., two) TCI states, the terminal device 1 may receive one PDSCH transmission opportunity for one transport block or transmit one PUSCH transmission opportunity in each TCI state. Applying FDM method A may be setting 'fdmSchemeA' in the terminal device 1. Each TCI state may be associated with a non-repeating frequency-domain resource allocation.

[0295] In operation 7, when 'fdmSchemeB' is set in the terminal device 1 and a single DCI indicates multiple (e.g., two) TCI states, the terminal device 1 may receive two PDSCH transmission opportunities for the same transport block or transmit two PUSCH transmission opportunities in each TCI state. Applying FDM method B may be setting 'fdmSchemeB' in the terminal device 1. Each TCI state may be associated with the first PDSCH transmission opportunity among the two PDSCH transmission opportunities. For the second PDSCH transmission opportunity among the two PDSCH transmission opportunities, the first PDSCH transmission opportunity may have a non-repeating frequency-domain resource allocation. Each TCI state may be associated with the first PUSCH transmission opportunity among the two PUSCH transmission opportunities. For the second PUSCH transmission opportunity among the two PUSCH transmission opportunities, the first PUSCH transmission opportunity may also have a non-repeating frequency-domain resource allocation.

[0296] In operation 8, when 'tdnSchemeA' is set in the terminal device 1 and a single DCI indicates multiple (e.g., two) TCI states, the terminal device 1 may receive two PDSCH transmission opportunities for the same transport block in each TCI state. Each TCI state may be associated with the first PDSCH transmission opportunity among the two PDSCH transmission opportunities. For the second PDSCH transmission opportunity among the two PDSCH transmission opportunities, the first PDSCH transmission opportunity may have a non-repeating time-domain resource allocation. Two PDSCH transmission opportunities may be received within one time slot. Applying TDM method A may be setting 'tdmSchemeA' in the terminal device 1. Applying TDM method A may be setting the upper-layer parameter repetitionScheme which is set to 'tdmSchemeA' in the terminal device 1.

[0297] The FDM (Frequency division multiplexing) method (fdmScheme) can be applied to one or both of the PDSCH and PUSCH. The FDM method A (fdmSchemeA) can be applied to one or both of the PDSCH and PUSCH. The FDM method B (fdmSchemeB) can be applied to one or both of the PDSCH and PUSCH. The TDM (Time division multiplexing) method (tdmScheme) can be applied to one or both of the PDSCH and PUSCH. The TDM method A (tdmSchemeA) can be applied to one or both of the PDSCH and PUSCH. The TDM method B (tdmSchemeB) can be applied to one or both of the PDSCH and PUSCH. fdmScheme can be the general term for fdmSchemeA and fdmSchemeB. tdmScheme can be the general term for tdmSchemeA and tdmSchemeB. The SDM (Spatial Division Multiplexing) method (sdmScheme) can be applied to one or both of the PDSCH and PUSCH.

[0298] In the case of applying the FDM method, and in the case of indicating multiple (e.g., two) TCI states, and in the case of indicating the DMRS ports within one CDM group, the first multiple physical resource blocks can be allocated to the first TCI state, and the second multiple physical resource blocks can be allocated to the second TCI state. The sum of the first multiple physical resource blocks and the second multiple physical resource blocks can be the total number of physical resource blocks allocated to the terminal device 1. In the case of applying the FDM method, and in the case of indicating multiple (e.g., two) TCI states, and in the case of indicating the DMRS ports within one CDM group, the even-numbered physical resource block groups can be allocated to the first TCI state, and the odd-numbered physical resource block groups can be allocated to the second TCI state. Both the even-numbered physical resource block groups and the odd-numbered physical resource block groups can be within the allocated frequency domain resources. In the case of applying the FDM method, and in the case of indicating multiple (e.g., two) TCI states, and in the case of indicating the DMRS ports within one CDM group, the terminal device 1 may not expect more than three PDSCH transmission layers for each PDSCH transmission opportunity. Applying the FDM method can be setting the upper layer parameter repetitionScheme with 'fdmSchemeA' or 'fdmSchemeB' set in the terminal device 1.

[0299] In the case of applying FDM method B, and in the case of indicating two TCI states, and in the case of indicating DMRS ports within a CDM group, each PDSCH transmission opportunity can be mapped to resource elements. The resource elements can be determined by physical resource blocks assigned to the TCI states of the PDSCH transmission opportunity. In the case of applying FDM method B, and in the case of indicating two TCI states, and in the case of indicating DMRS ports within a CDM group, and in the case of scheduling transmission layer 1, the terminal device 1 can expect up to two code blocks per PDSCH transmission opportunity. In the case of applying FDM method B, and in the case of indicating two TCI states, and in the case of indicating DMRS ports within a CDM group, and in the case of scheduling transmission layer 2, the terminal device 1 can expect one code block per PDSCH transmission opportunity. Among two PDSCH transmission opportunities, the first redundancy version can be applied to the first TCI state, and the second redundancy version can be applied to the second TCI state. Applying FDM method B can be setting the upper layer parameter repetitionScheme with 'fdmSchemeB' set in the terminal device 1.

[0300] In the case of applying FDM method B, and in the case of indicating two TCI states, and in the case of indicating DMRS ports within a CDM group, the modulation order of the first PDSCH transmission opportunity can be applied to the second PDSCH transmission opportunity. The first PDSCH transmission opportunity can be associated with the first TCI state. The second PDSCH transmission opportunity can be associated with the second TCI state.

[0301] In the case of applying FDM method B, and in the case of indicating two TCI states, and in the case of indicating DMRS ports within a CDM group, the terminal device 1 can determine the total number of resource elements for the PDSCH. The total number of allocated physical resource blocks can correspond to the first TCI state. The TBS of the first PDSCH transmission opportunity associated with the first TCI state can be applied to the second PDSCH transmission opportunity associated with the second TCI state.

[0302] In the case of applying TDM method A, and in the case of indicating two TCI states, and in the case of indicating DMRS ports within a CDM group, the terminal device 1 can determine the total number of resource elements within a physical resource block for the PDSCH. The number of OFDM symbols for PDSCH allocation within one time slot can correspond to the first TCI state. The TBS of the first PDSCH transmission opportunity associated with the first TCI state can be applied to the second PDSCH transmission opportunity associated with the second TCI state.

[0303] In the case of applying TDM method A and indicating DMRS ports within a CDM group, the number of PDSCH transmission opportunities may be the number of TCI states indicated by the DCI field 'transmission setting indication'. Further, in the case of indicating two TCI states (a first TCI state and a second TCI state), it may be expected to receive two PDSCH transmission opportunities (a first PDSCH transmission opportunity and a second PDSCH transmission opportunity). Further, in the case of indicating one TCI state, it may be expected that the terminal device 1 receives one PDSCH transmission opportunity. The first TCI state may be applied to the first PDSCH transmission opportunity. The second TCI state may be applied to the second PDSCH transmission opportunity. The second PDSCH transmission opportunity may have the same number of OFDM symbols as the first PDSCH transmission opportunity. The number of OFDM symbols K_bar may be the number of OFDM symbols from the last OFDM symbol of the first PDSCH transmission opportunity to the first OFDM symbol of the second PDSCH transmission opportunity. K_bar may be determined by a higher layer parameter. The terminal device 1 may not expect to receive more than three PDSCH transmission layers for each PDSCH transmission opportunity. The first redundancy version may be used for the first TCI state. The second redundancy version may be applied to the second TCI state. It may be expected that the PDSCH mapping type indicated by the DCI field 'time domain resource assignment' is mapping type B, and the PDSCH mapping type may also be applied to the two PDSCH transmission opportunities.

[0304] Repetition can be applied to one or both of PDSCH and PUSCH. Applying repetition can be setting the upper layer parameter repetitionNumber in the upper layer parameter PDSCH-TimeDomainResourceAllocation. In the case of applying repetition, the terminal device 1 can expect to indicate one or more (e.g., two) TCI states. One or more TCI states can be included in one code point of the DCI field 'transmission configuration indication'. In addition, the DCI field 'time domain resource allocation' can indicate an entry including the upper layer parameter repetitionNumber. The DMRS ports indicated to the terminal device 1 can be within one CDM group. In the case of indicating multiple TCI states, the terminal device 1 can receive PDSCH transmission opportunities of the same TB with multiple TCI states over multiple time slots. In the case of indicating one TCI state, the terminal device 1 can receive PDSCH transmission opportunities of the same TB with one TCI state over multiple time slots. The PDSCH transmission opportunities can be PDSCH transmission opportunities at the multiple time slot level. Applying repetition can be indicating that the DCI field 'time domain resource allocation' includes an entry of repetitionNumber. repetitionNumber can be included in PDSCH-TimeDomainResourceAllocation in PDSCH-Config.

[0305] In the case of applying repetition to PDSCH, the same SLIV can be applied to all PDSCH transmission opportunities over multiple consecutive time slots. The number of multiple consecutive time slots can be determined by repetitionNumber. SLIV can determine the starting OFDM symbol and the number of OFDM symbols.

[0306] In the case of applying repetition for PDSCH, and in the case where two TCI states are indicated by the DCI field 'transmission configuration indication', and in the case of indicating DMRS ports within a CDM group, the same SLIV can be applied to all PDSCH transmission opportunities over multiple consecutive time slots, and the first TCI state can be applied to the first PDSCH transmission opportunity. In addition, in the case where the repetition number is 2, the second TCI state can be applied to the second PDSCH transmission opportunity. In addition, in the case where the repetition number is more than 3, and in the case where cyclic mapping is valid, the first TCI state can be applied to the first PDSCH transmission opportunity, the second TCI state can be applied to the second PDSCH transmission opportunity, and the mapping pattern of the same TCI state can then follow the remaining PDSCH transmission opportunities. In addition, in the case where the repetition number is more than 3, and in the case where sequential mapping is valid, the first TCI state can be applied to the first and second PDSCH transmission opportunities, the second TCI state can be applied to the third and fourth PDSCH transmission opportunities, and the mapping pattern of the same TCI state can then follow the remaining PDSCH transmission opportunities. The number of multiple consecutive time slots can be determined by the repetitionNumber. The repetition number can be the value of the repetitionNumber.

[0307] Each PDSCH transmission opportunity is restricted to two transmission layers. In the case where all PDSCH transmission opportunities are associated with the first TCI state, the redundancy version (the index used to determine the redundancy version) can be counted by only considering the PDSCH transmission opportunities associated with the first TCI state.

[0308] In the case of applying repetition for PDSCH, and in the case where one TCI state is indicated by the DCI field 'transmission configuration indication', and in the case of indicating DMRS ports within a CDM group, the same SLIV can be applied to all PDSCH transmission opportunities over multiple consecutive time slots, and the same TCI state can be applied to all PDSCH transmission opportunities.

[0309] In the case where repetition is not applied by the first DCI format, and in the case where multiple (e.g., two) TCI states are indicated by the first DCI format, and in the case where DMRS ports within two CDM groups are indicated by the first DCI format, and in the case where the SFN (SFN method) is not applied, the SDM method can be applied. For example, applying the SDM method can be when Condition 1, Condition 2, Condition 3, and Condition 4 are all met. Condition 1 can be that repetition is not applied by the first DCI format. Condition 2 can be that multiple (e.g., two) TCI states are indicated by the first DCI format. Condition 3 can be that DMRS ports within two CDM groups are indicated by the first DCI format. Condition 4 can be that the SFN (SFN method) is not applied. In the case where repetition is not applied by the first DCI format, and in the case where multiple (e.g., two) TCI states are indicated by the first DCI format, and in the case where DMRS ports within two CDM groups are indicated by the first DCI format, and in the case where the SFN (SFN method) is not applied, the terminal device 1 can receive one PDSCH based on the SDM method. Not applying repetition can be that the DCI field 'time domain resource allocation' in the first DCI format does not indicate an entry including repetitionNumber. Multiple TCI states can be included in one code point of the DCI field 'transmission setting indication' in the first DCI format. The DMRS ports within two CDM groups can be indicated by the DCI field 'antenna port(s)' in the first DCI format. In the case of applying the SDM method, the first TCI state can correspond to the first CDM group of the first antenna port. The second TCI state can correspond to the second CDM group.

[0310] The SFN (Single Frequency Network) method can be applied to one or both of PDSCH and PUSCH. Setting the first upper layer parameter can be applying the SFN method. The first upper layer parameter can be sfnSchemePdsch. The first upper layer parameter can also be sfnSchemePdsch set to'sfnSchemeA'. The first upper layer parameter can also be sfnSchemePdsch set to'sfnSchemeB'. The SFN method can be a general term for SFN method A and SFN method B.

[0311] In the case of applying the SFN method to the PDSCH, and in the case where the terminal device 1 reports the first terminal capability, the terminal device 1 may be indicated one or more (e.g., two) TCI states. The first terminal capability may be dynamic SFN. The first terminal capability may be the dynamic switching of the SFN method. In the case of applying the SFN method, and in the case where the terminal device 1 does not report the first terminal capability, the terminal device 1 may not expect to indicate a TCI state in the TCI code point based on the MAC CE, and may indicate multiple (e.g., two) TCI states.

[0312] The SFN (Single Frequency Network) method can be applied to the PDCCH. Setting the first upper layer parameter may be applying the SFN method. The first upper layer parameter may be sfnSchemePdcch. The first upper layer parameter may be sfnSchemePdcch set to'sfnSchemeA'. The first upper layer parameter may also be sfnSchemePdcch set to'sfnSchemeB'. The SFN method may be a general term for SFN method A and SFN method B.

[0313] In the case of applying the SFN method to the PDSCH and the PDCCH, it can be expected to set the same method (e.g.,'sfnSchemeA' or'sfnSchemeB') for sfnSchemePdsch and sfnSchemePdcch. Applying the SFN method to the PDSCH may be setting sfnSchemePdsch. Applying the SFN method to the PDCCH may be setting sfnSchemePdcch.

[0314] In the case of applying the SFN method B to the PDCCH, and in the case where multiple (e.g., two) TCI states are activated by the MAC CE, the terminal device 1 may expect to apply the SFN method B to the PDSCH and indicate two TCI states. Applying the SFN method B to the PDSCH may be setting sfnSchemePdsch set to'sfnSchemeB'. Applying the SFN method B to the PDCCH may be setting sfnSchemePdcch set to'sfnSchemeB'. The PDSCH may be scheduled by DCI format 1_1 / 1_2.

[0315] In the case where PDCCH reception includes candidates for two PDCCHs from a search space set, the monitoring occasion for one PDCCH can be the union of the monitoring occasions for the PDCCH candidates for the two PDCCHs. In addition, the start of PDCCH reception can be the start of the previous PDCCH candidate. In addition, the end of PDCCH reception can be the end of the subsequent PDCCH candidate.

[0316] In the case where a CORESET pool index is not provided in a BWP in a serving cell, three or fewer CORESETs can be provided. In the case where the same CORESET pool index is provided for all CORESETs in a BWP in a serving cell, three or fewer CORESETs can be provided. In the case where a CORESET pool index 0 is provided for a first CORESET and a CORESET pool index 1 is provided for a second CORESET in a BWP in a serving cell, five or fewer CORESETs can be provided.

[0317] In each CORESET, the CORESET index can be provided by at least a first upper layer parameter, the QCL relationship (antenna port QCL) can be provided by a second upper layer parameter, and an indication of whether there is a TCI field can be provided by a third upper layer parameter. The first upper layer parameter can be controlResourceSetId. The second upper layer parameter can be TCI-State. The third upper layer parameter can be tci-PresentInDCI or tci-PresentDCI-1-2.

[0318] In the case where a value 0 is provided for the search space ID, the terminal device 1 can determine the search opportunity for the PDCCH candidate. The search space ID can be searchSpaceID. The search space ID can be included in PDCCH-Config or PDCCH-ConfigCommon.

[0319] In the case where two TCI states are provided in a CORESET, the terminal device 1 can assume the QCL information (QCL relationship) indicated by both of the two TCI states for PDCCH reception in one CORESET. The two TCI states can indicate the QCL information (QCL relationship) of the DMRS antenna port for PDCCH reception.

[0320] In the case where the setting of the TCI state is not provided in a CORESET, and also in the case where the initial setting of two or more TCI states is provided and the MAC CE activation command is not received, the terminal device 1 may assume that the DMRS antenna port associated with PDCCH reception and the SS / PBCH block are QCL. The SS / PBCH block may be recognized by the terminal device 1 during the initial access procedure.

[0321] In the case where the setting of two or more TCI states is provided in a CORESET by reconfiguration with synch, and the MAC CE activation command is not received, the terminal device 1 may assume that the DMRS antenna port associated with PDCCH reception and the SS / PBCH block or the CSI-RS resource are QCL. The SS / PBCH block or the CSI-RS resource may be recognized by the terminal device 1 during the random access procedure started by reconfiguration with synch.

[0322] In the case where a TCI state (e.g., unified TCI state) is provided in the CORESET with index 0 and the unified TCI state is applied, the terminal device 1 may assume that the DMRS antenna port (DMRS port) for the first PDCCH reception and the DMRS antenna port for the first PDSCH reception are QCL with the reference signal indicated by the TCI state. Applying the unified TCI state may be that the setting is set to 'enable' for followUnifiedTCIstate. The first PDSCH reception may be scheduled by the DCI format provided by the first PDCCH reception. The unified TCI state may be DLorJoint-TCIState.

[0323] In the case where a TCI state (e.g., unified TCI state) is provided in the CORESET with index 0 and the unified TCI state is not applied, in the terminal device 1, the DMRS antenna port (DMRS port) for the first PDCCH reception may be QCL with one or more reference signals based on the activated TCI state.

[0324] In the case where one TCI state is provided in a CORESET other than the one with index 0 or in the case where the MAC CE activation command is received for one or two of the provided TCI states, the terminal device 1 may assume that the DMRS antenna port for PDCCH reception is QCL with one or more DL RSs set by the TCI state. The TCI state indicated by the MAC CE activation command may be the 'activated TCI state'.

[0325] In the case of providing a unified TCI state, the DMRS antenna port for PDCCH reception in a CORESET other than the one with index 0 and the DMRS antenna port for PDSCH scheduled by the DCI format provided by the PDCCH reception may be QCL with the reference signal provided by the indicated unified TCI state ("indicated TCI state").

[0326] In the case of providing (or indicating) multiple (e.g., two) unified TCI states, the DMRS antenna port for PDCCH reception in a CORESET other than the one with index 0 and the DMRS antenna port for PDSCH scheduled by the DCI format provided by the PDCCH reception may be QCL with the reference signal provided by one or both of the indicated unified TCI states ("indicated TCI states").

[0327] In the case of applying a unified TCI state, the DMRS antenna port for PDCCH reception in a CORESET other than the one with index 0 and the DMRS antenna port for PDSCH scheduled by the DCI format provided by the PDCCH reception may be QCL with the reference signal provided by the indicated unified TCI state ("indicated TCI state").

[0328] In a BWP in a serving cell, 10 or fewer search space sets may be provided. For each search space set, at least the search space set index may be determined by a first upper layer parameter, the relationship between the search space set and the CORESET may be determined by a second upper layer parameter, and the linked search space set (search space set index) may be determined by a third upper layer parameter. The first upper layer parameter may be searchSpaceId. The second upper layer parameter may be controlResourceSetId. In the first search space set, the second search space set index may be provided by the third upper layer parameter. The third upper layer parameter may link the first search space set and the second search space set. The third upper layer parameter may be searchSpaceLinking. Providing the third upper layer parameter may be applying search space linking.

[0329] When linking the first search region set and the second search region set, the terminal device 1 can monitor according to each search region set during the monitoring opportunity in one time slot. The count of PDCCH candidates corresponding to the first search region set and the second search region set can be 3. The CORESET pool index for the first CORESET associated with the first search region set can be different from the CORESET pool index for the second CORESET associated with the second search region set. Linking the first search region set and the second search region set can be that the first search region set includes searchSpaceLinking attached with the second search region set, and the second search region set includes searchSpaceLinking attached with the first search region set.

[0330] When linking the first search region set and the second search region set and not linking the third search region set, for the first DCI format, the terminal device 1 can monitor the first PDCCH candidate corresponding to the first search region set and can monitor the second PDCCH candidate corresponding to the second search region set. In addition, for the second DCI format, the terminal device 1 can also monitor the third PDCCH candidate corresponding to the third search region set. In addition, in one CORESET and in the same symbol in one time slot, the first PDCCH candidate corresponding to the first search region set or the second PDCCH candidate corresponding to the second search region set and the third PDCCH candidate corresponding to the third search region set can use the same set of CCEs and can also be scrambled in the same way. In addition, the third PDCCH candidate corresponding to the third search region set may not be counted for monitoring. In addition, it may not be assumed that the detected DCI format is the first DCI format.

[0331] When linking the first search region set and the second search region set, and when linking the third search region set and the fourth search region set, and when the sizes of the detected DCI formats are the same, the terminal device 1 can expect different CCEs or different scrambling in one CORESET.

[0332] When the terminal device monitors multiple PDCCHs in the first CORESET and the second CORESET, the first CORESET can correspond to the CSS set attached with the smallest index or can correspond to the USS set attached with the smallest index. The second CORESET can have the same 'type D' property as the first CORESET. Repetition can be applied to the PDCCH. Applying repetition to the PDCCH can be to provide wo-QCLTypeDforPDCCHRepetition.

[0333] When linking a set of search areas with a second set of search areas, the terminal device 1 can end after detecting from two PDCCHs, and one of them is DCI format.

[0334] A MAC PDU (MAC protocol data unit) can be a bit string whose length is byte-aligned (that is, a multiple of 8 bits). A MAC SDU (MAC service data unit) can be a bit string whose length is byte-aligned (that is, a multiple of 8 bits). A MAC SDU can be included starting from the first bit of a MAC PDU. A MAC CE can be a bit string whose length is byte-aligned (that is, a multiple of 8 bits). A MAC sub-header can be a bit string whose length is byte-aligned (that is, a multiple of 8 bits). Each MAC sub-header can be configured immediately before the corresponding MAC SDU, MAC CE, or padding.

[0335] A MAC PDU (MAC protocol data unit) can be composed of one or more MAC sub-PDUs. Each MAC sub-PDU can be composed of a MAC sub-header. Each MAC sub-PDU can also be composed of a MAC sub-header and a MAC SDU (Service data unit). Each MAC sub-PDU can also be composed of a MAC sub-header and a MAC CE. Each MAC sub-PDU can also be composed of a MAC sub-header and padding. A MAC SDU can be of variable size. Each MAC sub-header can correspond to a MAC SDU, a MAC CE, or padding. A MAC PDU can also be a transport block.

[0336] The first MAC CE may be activation command A. The first MAC CE may be a MAC CE for activation or deactivation of the TCI state for the PDSCH (UE-specific PDSCH). The MAC CE for activation / deactivation of the TCI state for the PDSCH can be identified by the first MAC sub-header. For example, the first MAC sub-header may carry a first LCID (Logical channel ID). For example, the value of the first LCID may be "TCI States Activation / Deactivation for UE-specific PDSCH".

[0337] Figure 9 FIG. is an example of activation command A showing one aspect of the present embodiment. The field of the serving cell ID may indicate the identifier of the serving cell to which the first MAC CE is applied. The field of the BWP ID may indicate the DL BWP to which the MAC CE is applied as the code point of the 'bandwidth part indicator field' of the DCI. In the case where the first MAC CE is applied to a set of multiple serving cells, the field of the BWP ID may be ignored. The field of "T" i " may indicate the activation / deactivation status of the TCI state with the TCI state ID i. "T" i " being set to 1 may indicate that the TCI state with the TCI state ID i is activated. "T" i " being set to 1 may indicate that the TCI state with the TCI state ID i is mapped to one code point of the 'Transmission Configuration Indication field' of the DCI. "T" i " being set to 0 may indicate that the TCI state with the TCI state ID i is deactivated. "T" iSetting the field of “” to 1 can indicate a code point of the ‘transmission setting indication field’ of the DCI to which the TCI state with the TCI state ID i is not mapped. i can be the TCI state ID (or TCI-StateID). The TCI state can be associated with the TCI state ID. The maximum number of “activated TCI states” can be 8. The field of the CORESET pool ID can indicate that the first mapping is inherent to the CORESET ID (ControlResourceSetId) set by the CORESET pool ID (CORESET pool index). The first mapping can be the mapping between the “activated TCI states” and the code points of the DCI ‘transmission setting indication’ set by the “T i ” field. Setting the field of the CORESET pool ID to 1 can indicate applying the first MAC CE to the downlink transmission scheduled by the CORESET with the CORESET pool ID (CORESET pool index) with the attached value 1. Setting the field of the CORESET pool ID to 0 can indicate applying the first MAC CE to the downlink transmission scheduled by the CORESET with the CORESET pool ID (CORESET pool index) with the attached value 0. In the case where the CORESET pool index (coresetPoolIndex) is not set, the field of the CORESET pool ID in the first MAC CE can be ignored.

[0338] The second MAC CE can be the activation command B. The second MAC CE can be a MAC CE for the activation or deactivation of the TCI state used for the PDSCH (UE-specific PDSCH). The MAC CE for the activation / deactivation of the TCI state used for the PDSCH can be identified by the second MAC sub-header. For example, the second MAC sub-header can be associated with the second LCID (Logical channel ID). The second LCID can be the eLCID. For example, the value of the second LCID can be “Enhanced TCI States Activation / Deactivation for UE-specific PDSCH”.

[0339] Figure 10 is a diagram showing an example of the activation command B which represents a solution of this embodiment. “C i ” field can indicate whether there is an octet including the TCI state ID i2 . For example, for “C iIn the case of the field setting 1 of "", there may be an octet including the TCI status ID i,2 For example, in the case of setting the field of "C i " to 0, there may be no octet including the TCI status ID i,2 . The TCI status ID i,j field may represent the TCI status identified by the TCI status ID (TCI-StateId). The TCI status ID i,j may represent the j-th TCI status indicated by the i-th code point of the DCI 'transmission setting indication' field. The TCI status ID i,2 may be optional based on the indication of the "C i " field. i may be the index of the code point of the DCI 'Transmission configuration indicatin' field. j may be 1 or 2.

[0340] The third MAC CE may be the activation command C. The third MAC CE may be a MAC CE for activating or deactivating the unified TCI status. The MAC CE for activating / deactivating the unified TCI status can be identified by the third MAC sub-header. For example, the third MAC sub-header may carry the third LCID (Logical channel ID). The third LCID may be the eLCID. For example, the value of the third LCID may be "Unified TCI States Activation / Deactivation MAC CE".

[0341] Figure 11 is a diagram showing an example of the activation command C which is a solution of this embodiment. The DL BWP ID field may indicate a downlink BWP to which the MAC CE is applied as a code point of the DCI 'bandwidth part indicator' field. The UL BWP ID field may indicate an uplink BWP to which the MAC CE is applied as a code point of the DCI 'bandwidth part indicator' field. The "P i " field may indicate whether each TCI code point has multiple TCI statuses or one TCI status. For example, in the case of setting the "P i " field to 1, the i-th TCI code point may include both the DL TCI status and the UL TCI status. For example, in the case of setting the "P i”In the case of field setting 0, the i-th TCI code point may include either the DL TCI state or the UL TCI state. The "D / U" field may indicate whether the TCI state ID in the same octet is for joint (both DL and UL), DL, or UL. For example, in the case of setting the "D / U" field to 1, the TCI state ID in the same octet may be for DL / joint. For example, in the case of setting the "D / U" field to 0, the TCI state ID in the same octet may be for UL. The "TCI state ID" field may indicate the TCI state identified by the TCI state ID (TCI-StateId). In the case of setting the "D / U" field to 1, a "TCI state ID" of 7 bits in length may be used. In the case of setting the "D / U" field to 0, the most significant bit of the "TCI state ID" may be considered reserved, and the remaining 6 bits may represent the ID of the UL-TCIState (UL-TCIState-Id). The DL TCI state may be a TCI state applied to part or all of PDSCH, PDCCH, and CSI-RS. The UL TCI state may be a TCI state applied to part or all of PUSCH, PUCCH, and SRS. The joint TCI state may be a TCI state representing both the DL TCI state and the UL TCI state. DLorJointTCIState may be a DL TCI state or a joint TCI state. UL-TCIState may be a UL TCI state. DLTCI state may be a TCI state for DL. The joint TCI state may be a TCI state for both DL and UL. ULTCI state may be a TCI state for UL. The TCI code point may be the code point of the DCI 'transmission setting indication' field. The "R" field in the MACCE may be a reserved bit. The reserved bit may be set to 0.

[0342] The fourth MAC CE may be Activation Command D. The fifth MAC CE may be Activation Command E. The fourth MAC CE may be a MAC CE for activating or deactivating the unified TCI state. For example, the fourth MAC CE may also be a MAC CE for activating or deactivating the enhanced unified TCI state. The fifth MAC CE may be a MAC CE for activating or deactivating the unified TCI state. For example, the fifth MAC CE may be a MAC CE for activating or deactivating the enhanced unified TCI state. The MAC CE for activating / deactivating the unified TCI state may be identified by the fourth MAC sub-header. The MAC CE for activating / deactivating the unified TCI state may also be identified by the fifth MAC sub-header. For example, the fourth MAC sub-header may carry a fourth LCID (Logical channel ID). For example, the fifth MAC sub-header may carry a fifth LCID (Logical channel ID). The fourth LCID may be an eLCID. The fifth LCID may be an eLCID. For example, the value of the fourth LCID may be "Enhanced unified TCI States Activation / Deactivation MAC CE 1". For example, the value of the fifth LCID may be "Enhanced unified TCI States Activation / Deactivation MAC CE 2".

[0343] Figure 12 It is a diagram showing an example of Activation Command D which represents a solution of this embodiment. The field of Serving cell ID may indicate the identifier of the serving cell to which the fourth MAC CE is applied. The field of DL BWP ID may indicate a downlink BWP to which the fourth MAC CE is applied. The field of DL BWP ID may indicate a downlink BWP to which the fourth MAC CE is applied as a code point of the DCI 'partial bandwidth indicator' field. The field of UL BWP ID may indicate an uplink BWP to which the fourth MAC CE is applied. The field of UL BWP ID may indicate an uplink BWP to which the fourth MAC CE is applied as a code point of the DCI 'partial bandwidth indicator' field. "P iThe field of "" can indicate whether each TCI code point has multiple TCI states or one TCI state. For example, when the "P" i field is set to 1, the i-th TCI code point can include both the DL TCI state and the UL TCI state. For example, when the "P" i field is set to 0, the i-th TCI code point can include one of the DL TCI state and the UL TCI state. "D / U" i The field of "" can indicate whether each TCI code point is for joint (both DL and UL) / DL or for UL. For example, when the "D / U" i field is set to 1, the i-th TCI code point can be for DL / joint. For example, when the "D / U" i field is set to 0, the i-th TCI code point can be for UL. "T" j The field of "" can indicate the activation / deactivation status of the TCI state with the attached TCI state ID j. "T" j Setting the field of "" to 1 can indicate that the TCI state with the attached TCI state ID j is activated. "T" j Setting the field of "" to 1 can indicate that the TCI state with the attached TCI state ID j is mapped to a code point of the 'transmission setting indication field' of the DCI. "T" j Setting the field of "" to 0 can indicate that the TCI state with the attached TCI state ID j is deactivated. "T" j Setting the field of "" to 1 can indicate that the TCI state with the attached TCI state ID j is not mapped to a code point of the 'transmission setting indication field' of the DCI. j can be a UL TCI state ID (UL-TCIState-Id) or a DL / joint TCI state ID (DLorJoint-TCIState-Id). The maximum number of UL TCI state IDs can be 64. The maximum number of DL / joint TCI state IDs can be 128. j can be {0……63}. j can also be {0……127}. j can also be {0……191}. For example, when the i-th TCI code point corresponds to the UL TCI state, the "T" j field can indicate the activation / deactivation status of the TCI state with the attached TCI state ID j-128. For example, when the i-th TCI code point corresponds to the DL TCI state or the joint TCI state, the "T" jThe field of " " can indicate the activation / deactivation status of the TCI status with the attached TCI status ID j-64. For example, when the i-th TCI code point corresponds to the UL TCI status, setting the field of "T j " to 1 can indicate that the TCI status with the attached TCI status ID j-128 is activated. For example, when the i-th TCI code point corresponds to the UL TCI status, setting the field of "T j " to 1 can indicate that the TCI status with the attached TCI status ID j-128 is mapped to the i-th TCI code point. For example, when the i-th TCI code point corresponds to the DL TCI status or the combined TCI status, setting the field of "T j " to 1 can indicate that the TCI status with the attached TCI status ID j-64 is activated. For example, when the i-th TCI code point corresponds to the DL TCI status or the combined TCI status, setting the field of "T j " to 1 can indicate that the TCI status with the attached TCI status ID j-64 is mapped to the i-th TCI code point. The field of the CORESET pool ID can indicate that the second mapping is inherent to the CORESET ID (ControlResourceSetId) set by the CORESET pool ID (CORESET pool index). The second mapping can be the mapping between the "activated TCI status" and the code point of the DCI 'transmission setting indication' set by the field of "T i ". Setting the field of the CORESET pool ID to 1 can indicate applying the MAC CE to the downlink transmission or uplink transmission of the CORESET scheduling through the CORESET pool ID (CORESET pool index) with the attached value 1. Setting the field of the CORESET pool ID to 0 can indicate applying the MAC CE to the downlink transmission or uplink transmission of the CORESET scheduling through the CORESET pool ID (CORESET pool index) with the attached value 0. When the CORESET pool index (coresetPoolIndex) is not set, the field of the CORESET pool ID in the fourth MAC CE can be ignored.

[0344] Figure 13 is a diagram showing an example of the activation command E of a solution of this embodiment. Figure 13 The field of the CORESET pool ID in can be reserved. "P i,j " The field can indicate whether each TCI code point has multiple TCI statuses or one TCI status. For example, for "P i,j”In the case of field setting 1, the j-th TCI state in the i-th TCI code point can be two (e.g., DL TCI state and UL TCI state). For example, for “P i,j ” In the case of field setting 0, the j-th TCI state in the i-th TCI code point can be one (e.g., DL TCI state transmission or UL TCI state). “D / U j ” The field can indicate whether the TCI state ID in the same octet is for union (both DL and UL) / DL or for UL. “D / U j ” The field can indicate whether the TCI state ID in the same octet is for union (both DL and UL) / DL or for UL. For example, in the case of field setting 1 for “D / U j ”, the TCI state ID in the same octet can be used for DL / union. For example, in the case of field setting 0 for “D / U j ”, the TCI state ID in the same octet can be used for UL. “TCI state ID i,j ” The field can indicate the TCI state identified by the DL / union TCI state ID (TCI-StateId) or UL TCI state ID (UL-TCIState-Id). In the case of field setting 1 for “D / U j ”, the “TCI state ID i,j ” with a length of 7 bits can be used. In the case of field setting 0 for “D / U j ”, the most significant bit of “TCI state ID i,j ” can be considered reserved, and the remaining 6 bits can represent the ID of UL-TCIState (UL TCI state Id, UL-TCIState-Id).

[0345] Figure 13j in it can correspond to the CORESET pool ID (CORESET pool index). For example, j = 1 can correspond to the CORESET pool ID (CORESET pool index) = 0. For example, j = 2 can correspond to the CORESET pool ID (CORESET pool index) = 1. For example, j = 0 can correspond to the CORESET pool ID (CORESET pool index) = 0. For example, j = 1 can correspond to the CORESET pool ID (CORESET pool index) = 1. Whether j corresponds to the CORESET pool ID (CORESET pool index) can be determined by the "J" field. For example, when the "J" field is set to 1, j can correspond to the CORESET pool ID (CORESET pool index). For example, when the "J" field is set to 0, j can correspond to the index of the TCI state in a code point. "P i,j " field can indicate whether each TCI code point of the DCI associated with the CORESET pool ID corresponding to j has multiple TCI states or one TCI state. For example, when the "P i,j " field is set to 1, it can correspond to both the DL TCI state and the UL TCI state of the i-th TCI code point of the DCI associated with the CORESET pool ID corresponding to j. For example, when the "P i,j " field is set to 0, it can correspond to one of the DL TCI state and the UL TCI state of the i-th TCI code point of the DCI associated with the CORESET pool ID corresponding to j. When the CORESET pool index (upper layer parameter coresetPoolIndex) is not set, j may not correspond to the CORESET pool ID either.

[0346] The activation command F can be a MAC CE for TCI state indication of the PDCCH. The activation command F can be composed of a 5-bit serving cell ID, a 4-bit CORESET ID, and a 7-bit TCI state ID.

[0347] The activation command G can be a MAC CE for TCI state indication of the PDCCH. The activation command G can be composed of a 5-bit serving cell ID, a 4-bit CORESET ID, a 7-bit first TCI state ID, and a 7-bit second TCI state ID. When one or more CORESETs in a BWP are set with different values of the CORESET pool index, the activation command G may not be applied to one or more CORESETs either. When SFN is applied to the PDCCH, the activation command G can be applied. Applying SFN to the PDCCH can be setting sfnSchemePdcch.

[0348] The terminal device 1 can receive an activation command. The activation command can be a collective term for activation command A, activation command B, activation command C, activation command D, activation command E, activation command F, and activation command G.

[0349] DCI format 1_0 / 1_1 / 1_2 can be used for the scheduling of PDSCH. The BWP indicator (Bandwidth part indicator) field can be included in one or both of DCI format 1_1 and DCI format 1_2. The number of information bits constituting the BWP indicator field can be determined based on the number of DL BWPs. The TPC command (TPC command for scheduled PUCCH) field can be included in one or both of DCI format 1_1 and DCI format 1_2. The Second TPC command (Second TPC command for scheduled PUCCH) field can be included in one or both of DCI format 1_1 and DCI format 1_2. For example, when the upper layer parameter SecondTPCFieldDCI is set, the Second TPC command (Second TPC command for scheduled PUCCH) field can be included in DCI format 1_1.

[0350] DCI format 1_0, DCI format 1_1, and DCI format 1_2 can be DCI formats for the scheduling of PDSCH. DCI format 1_0 can be used for the scheduling of PDSCH in one downlink cell.

[0351] The Antenna port(s) field can be included in DCI format 1_1 and DCI format 1_2. The number of information bits constituting the Antenna port field can be 4, 5, or 6 bits. In addition, the number of information bits constituting the Antenna port field can also be 4, 5, 6, or 7 bits. In addition, the number of information bits constituting the Antenna port field can also be 4, 5, 6, 7, or 8 bits. The number of CDM groups without data can be any one of value 1, value 2, and value 3. The number of CDM groups without data with value 1 can refer to CDM group 0. The number of CDM groups without data with value 2 can refer to CDM groups {0, 1}. The number of CDM groups without data with value 3 can refer to CDM groups {0, 1, 2}.

[0352] The upper-layer parameter dmrs-Type being 1 can be to set the DMRS setting type 1. The upper-layer parameter dmrs-Type being 2 can be to set the DMRS setting type 2. The upper-layer parameter maxLength being 1 can be that the maximum number of preceding DMRS symbols is 1 symbol. The upper-layer parameter maxLength being 2 can be that the maximum number of preceding DMRS symbols is 2 symbols. For example, the upper-layer parameter maxLength being 1 can be to set the preceding DMRS (preceding DMRS symbol) of a single symbol. For example, the upper-layer parameter maxLength being 2 can be to set the preceding DMRS (preceding DMRS symbol) of a single symbol or the preceding DMRS of a double symbol.

[0353] When setting the DMRS setting type 1 and the front DMRS symbol of a single symbol, the number of information bits constituting the antenna port field can be 4. When setting the DMRS setting type 1 and the front DMRS symbol of a single symbol, and when the upper layer parameter ExtendedDMRSports is not set, the number of information bits constituting the antenna port field can be 4. When setting the DMRS setting type 1 and the front DMRS symbol of a single symbol, and when the upper layer parameter ExtendedDMRSports is set to invalid, the number of information bits constituting the antenna port field can be 4. When the value of the antenna port field composed of 4 information bits is 0, the DMRS port can be 0, and the number of CDM groups without data can be 1. When the value of the antenna port field composed of 4 information bits is 1, the DMRS port can be 1, and the number of CDM groups without data can be 1. When the value of the antenna port field composed of 4 information bits is 2, the DMRS port can be {0, 1}, and the number of CDM groups without data can be 1. When the value of the antenna port field composed of 4 information bits is 3, the DMRS port can be 0, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 4, the DMRS port can be 1, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 5, the DMRS port can be 2, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 6, the DMRS port can be 3, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 7, the DMRS port can be {0, 1}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 8, the DMRS port can be {2, 3}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 9, the DMRS port can be {0, 1, 2}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 10, the DMRS port can be {0, 1, 2, 3}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 11, the DMRS port can be {0, 2}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 4 information bits is 12, 13, 14, or 15, the DMRS port can be undefined (reserved), and the number of CDM groups without data can be undefined (reserved).

[0354] When setting the DMRS setting type 1 and the front DMRS symbol of a single symbol, and when setting the upper layer parameter ExtendedDMRSports, the number of information bits constituting the antenna port field can be 5. When setting the DMRS setting type 1 and the front DMRS symbol of a single symbol, and when the upper layer parameter ExtendedDMRSports is effective, the number of information bits constituting the antenna port field can be 5. When the value of the antenna port field composed of 5 information bits is 0, the DMRS port can be 0, and the number of CDM groups without data can be 1. When the value of the antenna port field composed of 5 information bits is 1, the DMRS port can be 1, and the number of CDM groups without data can be 1. When the value of the antenna port field composed of 5 information bits is 2, the DMRS port can be {0, 1}, and the number of CDM groups without data can be 1. When the value of the antenna port field composed of 5 information bits is 3, the DMRS port can be 0, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 4, the DMRS port can be 1, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 5, the DMRS port can be 2, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 6, the DMRS port can be 3, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 7, the DMRS port can be {0, 1}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 8, the DMRS port can be {2, 3}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 9, the DMRS port can be {0, 1, 2}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 10, the DMRS port can be {0, 1, 2, 3}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 11, the DMRS port can be {0, 2}, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 12, the DMRS port can be 8, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 13, the DMRS port can be 9, and the number of CDM groups without data can be 2. When the value of the antenna port field composed of 5 information bits is 14, the DMRS port can be 10, and the number of CDM groups without data can be 2.When the value of the antenna port field consisting of 5 information bits is 15, the DMRS port can be 11, and the number of CDM groups without data can be 2. When the value of the antenna port field consisting of 5 information bits is 16, the DMRS port can be {8, 9}, and the number of CDM groups without data can be 2. When the value of the antenna port field consisting of 5 information bits is 17, the DMRS port can be {10, 11}, and the number of CDM groups without data can be 2. When the value of the antenna port field consisting of 5 information bits is 18, the DMRS port can be {8, 9, 10}, and the number of CDM groups without data can be 2. When the value of the antenna port field consisting of 5 information bits is 19, the DMRS port can be {8, 9, 10, 11}, and the number of CDM groups without data can be 2. When the value of the antenna port field consisting of 5 information bits indicates a part or all of the DMRS ports {8, 9, 10, 11}, the number of CDM groups without data can be 2.

[0355] When setting the DMRS setting type 1 and setting the maximum number of preceding DMRS symbols to 2, the number of information bits constituting the antenna port field can be 5. When setting the DMRS setting type 1 and setting the maximum number of preceding DMRS symbols to 2, and when the upper layer parameter ExtendedDMRSports is not set, the number of information bits constituting the antenna port field can be 5. When setting the DMRS setting type 1 and setting the maximum number of preceding DMRS symbols to 2, and when the upper layer parameter ExtendedDMRSports is set to be invalid, the number of information bits constituting the antenna port field can be 5. The antenna port field consisting of 5 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7}.

[0356] When setting the DMRS setting type 1 and setting the maximum number of preceding DMRS symbols to 2, the number of information bits constituting the antenna port field can be 5. When setting the DMRS setting type 1 and setting the maximum number of preceding DMRS symbols to 2, and when the upper layer parameter ExtendedDMRSports is not set, the number of information bits constituting the antenna port field can be 5. When setting the DMRS setting type 1 and setting the maximum number of preceding DMRS symbols to 2, and when the upper layer parameter ExtendedDMRSports is set to be invalid, the number of information bits constituting the antenna port field can be 5. The antenna port field consisting of 5 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7}.

[0357] In the case of setting the DMRS setting type 1 and setting the maximum number of front DMRS symbols to 2, and in the case of setting the upper layer parameter ExtendedDMRSports, the number of information bits constituting the antenna port field can be 6. In the case of setting the DMRS setting type 1 and setting the maximum number of front DMRS symbols to 2, and in the case of setting the upper layer parameter ExtendedDMRSports to be valid, the number of information bits constituting the antenna port field can be 6. The antenna port field constituted by 6 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}. In the case where the value of the antenna port field constituted by 6 information bits indicates a part or all of the DMRS ports {8, 9, 10, 11, 12, 13, 14, 15}, the number of CDM groups without data can be 2.

[0358] In the case of DMRS setting type 1, the antenna ports (DMRS ports) that can be used by applying DMRS extension can correspond to the number of CDM groups without data being 2. In the case of DMRS setting type 1, the antenna ports (DMRS ports) that can be used by applying DMRS extension do not correspond to the number of CDM groups without data being 1.

[0359] In the case of setting the DMRS setting type 2 and setting the maximum number of front DMRS symbols to 1, the number of information bits constituting the antenna port field can be 5. In the case of setting the DMRS setting type 2 and setting the maximum number of front DMRS symbols to 1, and in the case of not setting the upper layer parameter ExtendedDMRSports, the number of information bits constituting the antenna port field can be 5. In the case of setting the DMRS setting type 2 and setting the maximum number of front DMRS symbols to 1, and in the case of setting the upper layer parameter ExtendedDMRSports to be invalid, the number of information bits constituting the antenna port field can be 5. The antenna port field constituted by 5 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5}.

[0360] When the DMRS configuration type 2 is set, the maximum number of front DMRS symbols is set to 1, and the upper layer parameter ExtendedDMRSports is set, the number of information bits constituting the antenna port field can be 6. When the DMRS configuration type 2 is set, the maximum number of front DMRS symbols is set to 1, and the upper layer parameter ExtendedDMRSports is valid, the number of information bits constituting the antenna port field can be 6. The antenna port field composed of 6 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 12, 13, 14, 15, 16, 17}. When the value of the antenna port field composed of 6 information bits indicates a part or all of the DMRS ports {12, 13, 14, 15, 16, 17}, the number of CDM groups without data can be one or both of 2 and 3, and can also be not 1.

[0361] When the DMRS configuration type 2 is set and the maximum number of front DMRS symbols is set to 2, the number of information bits constituting the antenna port field can be 6. When the DMRS configuration type 2 is set and the maximum number of front DMRS symbols is set to 2, and the upper layer parameter ExtendedDMRSports is not set, the number of information bits constituting the antenna port field can be 6. When the DMRS configuration type 2 is set and the maximum number of front DMRS symbols is set to 2, and the upper layer parameter ExtendedDMRSports is invalid, the number of information bits constituting the antenna port field can be 6. The antenna port field composed of 6 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}.

[0362] When the DMRS setting type 2 is set and the maximum number of front DMRS symbols is set to 2, and when the upper layer parameter ExtendedDMRSports is set, the number of information bits constituting the antenna port field can be 7. When the DMRS setting type 2 is set and the maximum number of front DMRS symbols is set to 2, and when the upper layer parameter ExtendedDMRSports is valid, the number of information bits constituting the antenna port field can be 7. The antenna port field composed of 7 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}. When the value of the antenna port field composed of 7 information bits indicates a part or all of the DMRS ports {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}, the number of CDM groups without data can be one or both of 2 and 3, or can also be not 1.

[0363] In the case of DMRS setting type 2, the antenna ports (DMRS ports) that can be used by applying DMRS extension can correspond to the number of CDM groups without data being 3. In the case of DMRS setting type 1, the antenna ports (DMRS ports) that can be used by applying DMRS extension may not correspond to the number of CDM groups without data being 1. In the case of DMRS setting type 1, the antenna ports (DMRS ports) that can be used by applying DMRS extension may not correspond to the number of CDM groups without data being 2.

[0364] When the DMRS setting type 1 and the maximum number of front DMRS symbols are set to 1, and when the upper layer parameter ExtendedDMRSports is set, the number of information bits constituting the antenna port field can be 6. When the DMRS setting type 1 and the maximum number of front DMRS symbols are set to 1, and when the upper layer parameter ExtendedDMRSports is valid, the number of information bits constituting the antenna port field can be 6. The first part of the antenna port field composed of 6 information bits can be used to indicate the DMRS port, and the second part of the antenna port field composed of 6 information bits can be used for DMRS reception assistance.

[0365] When setting the DMRS setting type to 1, setting the maximum number of front DMRS symbols to 2, and setting the upper layer parameter ExtendedDMRSports, the number of information bits constituting the antenna port field can be 7. When setting the DMRS setting type to 1, setting the maximum number of front DMRS symbols to 2, and setting the upper layer parameter ExtendedDMRSports to be valid, the number of information bits constituting the antenna port field can be 7. The antenna port field composed of 7 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}. When the value of the antenna port field composed of 7 information bits indicates a part or all of the DMRS ports {8, 9, 10, 11, 12, 13, 14, 15}, the number of CDM groups without data can be 2. The first part of the antenna port field composed of 7 information bits can be used to indicate the DMRS port, and the second part of the antenna port field composed of 7 information bits can be used for DMRS reception assistance.

[0366] When setting the DMRS setting type to 2, setting the maximum number of front DMRS symbols to 1, and setting the upper layer parameter ExtendedDMRSports, the number of information bits constituting the antenna port field can be 7. When setting the DMRS setting type to 2, setting the maximum number of front DMRS symbols to 1, and setting the upper layer parameter ExtendedDMRSports to be valid, the number of information bits constituting the antenna port field can be 7. The antenna port field composed of 7 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 12, 13, 14, 15, 16, 17}. When the value of the antenna port field composed of 7 information bits indicates a part or all of the DMRS ports {12, 13, 14, 15, 16, 17}, the number of CDM groups without data can be 2. The first part of the antenna port field composed of 7 information bits can be used to indicate the DMRS port, and the second part of the antenna port field composed of 7 information bits can be used for DMRS reception assistance.

[0367] In the case of setting the DMRS setting type to 2 and setting the maximum number of front DMRS symbols to 2, and in the case of setting the upper layer parameter ExtendedDMRSports, the number of information bits constituting the antenna port field can be 8. In the case of setting the DMRS setting type to 2 and setting the maximum number of front DMRS symbols to 2, and in the case of setting the upper layer parameter ExtendedDMRSports to be valid, the number of information bits constituting the antenna port field can be 8. The antenna port field composed of 8 information bits can indicate a part or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}. In the case where the value of the antenna port field composed of 8 information bits indicates a part or all of the DMRS ports {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}, the number of CDM groups without data can be 2. The first part of the antenna port field composed of 8 information bits can be used to indicate the DMRS port, and the second part of the antenna port field composed of 7 information bits can be used for DMRS reception assistance.

[0368] The number of DMRS ports can be the number of layers (transmission layers) v. The antenna ports {p0... pv-1} (antenna port values, antenna port numbers) can be the sum of the DMRS ports (DMRS port values, DMRS port numbers) and 1000. For example, DMRS port 0 can correspond to antenna port p0 = 1000. For example, DMRS port 1 can correspond to antenna port p1 = 1001. For example, DMRS ports {0, 1} can correspond to antenna ports {p0 = 1000, p1 = 1001}. For example, DMRS ports {2, 3} can correspond to antenna ports {p2 = 1002, p3 = 1003}.

[0369] The TCI (Transmission configuration indication) field may be included in one or both of DCI format 1_1 and DCI format 1_2. For example, in the case of setting upper layer parameters, the TCI (Transmission configuration indication) field may be included in one or both of DCI format 1_1 and DCI format 1_2. For example, in the case of setting the upper layer parameter tci-PresentInDCI, the TCI (Transmission configuration indication) field may be included in one or both of DCI format 1_1 and DCI format 1_2. One or two TCI states may be indicated by the DCI format. One or more (e.g., two) TCI states may be indicated by the TCI field in the DCI format.

[0370] One or both of multiple uplink channels / signals (e.g., PUSCH, PUCCH, SRS) and multiple downlink channels / signals (e.g., PDSCH, PDCCH, CSI-RS) can perform beam management through one TCI state. That is, by applying one TCI state to multiple channels / signals, efficient beam management can be expected. However, in the case of multiple TRPs (Multiple Transmission and Reception Points: Multi-TRP), it is difficult to switch the beam for each TRP by applying one TCI state to multiple channels / signals. Therefore, as a problem, it is necessary to apply one TCI state to multiple channels / signals and each TRP. Thereby, efficient communication and efficient beam management can be expected. In addition, considering the application of part or all of the FDM / TDM / SDM / SFN method and the repetition method to PDSCH / PDCCH, efficient beam management is expected. As a means for solving the problem, the present invention can be used for switching of the TCI state and activation commands on the basis of considering the application of part or all of the FDM / TDM / SDM / SFN method and the repetition method to PDSCH / PDCCH. The PDSCH-MTRP method may be a general term for the FDM method, TDM method, SDM method, and SFN method for PDSCH.

[0371] Figure 14 It is a diagram showing an example of the management of the TCI state of one aspect of the present embodiment. The terminal device 1 may receive one or both of PDSCH 1403 and PDCCH 1404. PDSCH 1403 may be transmitted to transfer a transport block. The terminal device 1 may receive the PDCCH 1404 configured (mapped) with DCI.Figure 14 The painted black circle in it can be a TCI state.

[0372] One or more TCI states 1400 can be set by upper layer parameters. For example, one or more UL TCI states (UL-TCIState) can be set for each uplink BWP (BWP-UplinkDedicated) through upper layer parameters. For example, one or more DL / joint TCI states (DLorJointTCIState) can be set for each PDSCH configuration (PDSCH-Config) through upper layer parameters. A TCI state can be associated with a TCI state ID. For example, a UL TCI state can be associated with a UL TCI state ID (TCI-UL-State-Id, UL-TCIState-Id). For example, a DL / joint TCI state (TCI-state) can be associated with a TCI state ID (TCI-stateId). One or more TCI states set by upper layer parameters can be the set TCI states 1400.

[0373] One or more TCI states 1401 can be activated by a MAC CE (e.g., activation command). The first PDSCH can carry the first transport block. The first transport block can be a MAC PDU. A MAC PDU can include an activation command or a MAC CE called an activation command. For example, the activation command can be activation command D or activation command E. One or both of one or more TCI states and one or more "TCI state pairs" can be mapped to one or more code points. For example, one or both of one or more TCI states and "TCI state pairs" can be mapped to one or more code points through an activation command. Each TCI state or each TCI state pair can also be mapped to one code point. For example, each TCI state or each TCI state pair can also be mapped to one code point through an activation command. The code point mapping the TCI state or TCI state pair can be the code point in the TCI field. The code point mapping the TCI state or TCI state pair can be the code point of the TCI field in DCI format 1_1 or DCI format 1_2. The code point mapping the TCI state or TCI state pair can be the code point of the TCI field in DCI1410. The TCI state activated by the MAC CE can be the activated TCI state 1401. The TCI state mapped to the code point of the TCI field can be the activated TCI state 1401.

[0374] In the case where the coresetPoolIndex is not set in one or more CORESETs (Control Resource Sets), activation command E can be used. In the case where the coresetPoolIndex is set in one or more CORESETs (Control Resource Sets), activation command D or activation command E can be used. For example, in a single DCI mode, activation command E can be used. For example, in multiple DCI modes, activation command D can be used. For example, in both a single DCI mode and multiple DCI modes, activation command E can be used.

[0375] One or more TCI states 1402 can be indicated by a first DCI. The first DCI can be DCI format 1_1 or DCI format 1_2. The first DCI can include a TCI (transmission configuration indication) field. The TCI field can indicate one or more (e.g., two or four) TCI states. For example, one value of the TCI field can correspond to one code point of the TCI field. The TCI states indicated by the first DCI format can be the indicated TCI states 1402. The indicated TCI states 1402 can be part or all of the UL TCI state, the DL TCI state, and the combined TCI state. The UL TCI state can also be the TCI state for PUSCH, PUCCH, and SRS. The DL TCI state can also be the TCI state for PDSCH, PDCCH, and CSI-RS. The combined TCI state can also be the TCI state for PUSCH, PUCCH, SRS, PDSCH, PDCCH, and CSI-RS.

[0376] The number of the indicated TCI states 1402 can be 4. For example, the indicated TCI states 1402 can be the first pair of the first UL TCI state and the first DL TCI state and the second pair of the second UL TCI state and the second DL TCI state. The first pair can be associated with the first TRP. The second pair can be associated with the second TRP.

[0377] The number of the indicated TCI states 1402 can be 3. For example, the indicated TCI states 1402 can be the first pair of the first UL TCI state and the first DL TCI state and the third DL / UL / combined TCI state. The first pair can be associated with the first TRP, and the third DL / UL / combined TCI state can be associated with the second TRP. The first pair can be associated with the second TRP, and the third DL / UL / combined TCI state can be associated with the first TRP.

[0378] The number of indicated TCI states 1402 can be 2. For example, the indicated TCI states 1402 can be a first DL / UL / Combined TCI state and a second DL / UL / Combined TCI state. The first DL / UL / Combined can be associated with a first TRP, and the second DL / UL / Combined TCI state can be associated with a second TRP.

[0379] The number of indicated TCI states 1402 can be 2. For example, the indicated TCI states 1402 can be a first pair of a first DL TCI state and a first UL TCI state. The first pair can be associated with a first TRP. The first pair can be associated with a second TRP.

[0380] The number of indicated TCI states 1402 can be 1. For example, the indicated TCI state 1402 can be a first DL / UL / Combined TCI state. The first DL / UL / Combined may not be associated with a TRP. The first DL / UL / Combined TCI state can be associated with a first TRP. The first DL / UL / Combined TCI state can be associated with a second TRP.

[0381] The indicated TCI state 1402 can be applied starting from the last OFDM symbol of the PDCCH that maps to DCI format 1_1 / 1_2 to the first time slot after N symb symbols. The indicated TCI state 1402 can be applied to multiple channels / signals. N symb can be BeamAppTim.

[0382] Some or all of one or more TCI states 1402 can be applied to PDSCH1403. The "indicated TCI state 1402" applied to PDSCH1403 can be one or both of one or more DL TCI states and one or more Combined TCI states.

[0383] Some or all of one or more TCI states 1402 can be applied to PDCCH1404. The "indicated TCI state 1402" applied to PDCCH1404 can be one or both of one or more DL TCI states and one or more Combined TCI states.

[0384] The indicated TCI state 1402 can at least include TCI state 1450 and TCI state 1451. One or both of TCI state 1450 and TCI state 1451 can be applied to PDCCH1403. One or both of TCI state 1450 and TCI state 1451 can be applied to PDCCH1404.

[0385] The DCI format for PDSCH1403 can perform some or all of the first indication, second indication, third indication, and fourth indication. The DCI format for PDSCH1403 can give any one of the first indication, second indication, third indication, and fourth indication. For example, a field in the DCI format for PDSCH1403 can perform any one of the first indication, second indication, third indication, and fourth indication. A field in the DCI format for PDSCH1403 can give any one of the first indication, second indication, third indication, and fourth indication. The DCI format for PDSCH1403 can perform any one of the first indication, second indication, third indication, and fourth indication on the PDSCH1403 scheduled by this DCI format. The DCI format for PDSCH1403 can also give any one of the first indication, second indication, third indication, and fourth indication to the PDSCH1403 transmitted after at least N symb symbols from the OFDM symbol at the end of the PDCCH mapping this DCI format.

[0386] The upper-layer parameters for PDCCH1404 can perform some or all of the first indication, second indication, third indication, and fourth indication. The upper-layer parameters for PDCCH1404 can give any one of the first indication, second indication, third indication, and fourth indication. The upper-layer parameters for PDCCH1404 can perform any one of the first indication, second indication, third indication, and fourth indication on PDCCH1404.

[0387] The first indication and the second indication may be to apply one of the first TCI state 1450 and the second TCI state 1451 to one or both of the PDSCH 1403 and the PDCCH 1404. The first indication may be to apply the first TCI state 1450 to one or both of the PDSCH 1403 and the PDCCH 1404. The second indication may be to apply the second TCI state 1451 to one or both of the PDSCH 1403 and the PDCCH 1404. The third indication and the fourth indication may be to apply both the first TCI state 1450 and the second TCI state 1451 to one or both of the PDSCH 1403 and the PDCCH 1404. The first indication may be to use the first TCI state 1450. The second indication may be to use the second TCI state 1451. The third indication and the fourth indication may be to use both the first TCI state 1450 and the second TCI state 1451. The first indication may be to apply the first TCI state 1450 to a plurality of downlink channels / signals including the PDSCH 1403. The second indication may be to apply the second TCI state 1451 to a plurality of downlink channels / signals including the PDSCH 1403. The third indication and the fourth indication may be to apply both the first TCI state 1450 and the second TCI state 1451 to a plurality of uplink channels / signals including the PDSCH 1403.

[0388] The DCI format for PDSCH1403 may include a TRP indication field. The TRP indication field may give any one of a first indication, a second indication, a third indication, and a fourth indication. For example, when the TRP indication field represents 0 ("00"), the first indication may be executed. For example, when the TRP indication field represents 1 ("01"), the second indication may be executed. For example, when the TRP indication field represents 2 ("10"), the third indication may be executed. For example, when the TRP indication field represents 3 ("11"), the fourth indication may be executed. For example, the TRP indication field being 0 ("00") may give the first indication. For example, the TRP indication field being 1 ("01") may give the second indication. For example, the TRP indication field being 2 ("10") may give the third indication. For example, the TRP indication field being 3 ("11") may give the fourth indication. The TRP indication field may be a field different from the TCI field. When upper layer parameters are set, the number of information bits constituting the TRP indication field may be 2. When upper layer parameters are not set, the number of information bits constituting the TRP indication field may also be 0. The TRP indication field may be included in both the UL scheduling DCI format and the DL scheduling DCI format. The UL scheduling DCI format may be part or all of DCI format 0_0, DCI format 0_1, and DCI format 0_2. The DL scheduling DCI format may be part or all of DCI format 1_0, DCI format 1_1, and DCI format 1_2.

[0389] The DCI format for PDSCH1403 may include a TCI field. The TCI field may give any one of a first indication, a second indication, a third indication, and a fourth indication. For example, when the TCI field represents 0 ("00"), the first indication may be executed. For example, when the TCI field represents 1 ("01"), the second indication may be executed. For example, when the TCI field represents 2 ("10"), the third indication may be executed. For example, when the TCI field represents 3 ("11"), the fourth indication may be executed. For example, the TCI field being 0 ("00") may give the first indication. For example, the TCI field being 1 ("01") may give the second indication. For example, the TCI field being 2 ("10") may give the third indication. For example, the TCI field being 3 ("11") may give the fourth indication.

[0390] The upper layer parameters for PDCCH 1403 can give any one of the first indication, the second indication, the third indication, and the fourth indication. For example, when the upper layer parameters for PDCCH 1403 represent 0 ("00"), the first indication can be executed. For example, when the upper layer parameters for PDCCH 1403 represent 1 ("01"), the second indication can be executed. For example, when the upper layer parameters for PDCCH 1403 represent 2 ("10"), the third indication can be executed. For example, when the upper layer parameters for PDCCH 1403 represent 3 ("11"), the fourth indication can be executed. For example, the upper layer parameters for PDCCH 1403 being 0 ("00") can be giving the first indication. For example, the upper layer parameters for PDCCH 1403 being 1 ("01") can be giving the second indication. For example, the upper layer parameters for PDCCH 1403 being 2 ("10") can be giving the third indication. For example, the upper layer parameters for PDCCH 1403 being 3 ("11") can be giving the fourth indication.

[0391] The TDM method can be applied to PDSCH 1403. PDSCH 1403 can be received in two PDSCH transmission opportunities (the first transmission opportunity and the second transmission opportunity). For example, when the TDM method (TDM method A) is applied, PDSCH 1403 can be received in two PDSCH transmission opportunities (the first transmission opportunity and the second transmission opportunity). The first transmission opportunity and the second transmission opportunity may not overlap in the time domain and may be in the same time slot. PDSCH 1403 can correspond to the same transport block in the first transmission opportunity and the second transmission opportunity. When the first indication is given, the first transmission opportunity can be associated with the first TCI 1450, and the second transmission opportunity can be associated with the first TCI 1450. When the second indication is given, the first transmission opportunity can be associated with the second TCI 1451, and the second transmission opportunity can be associated with the second TCI 1451. When the third indication is given, the first transmission opportunity can be associated with the first TCI 1450, and the second transmission opportunity can be associated with the second TCI 1451. When the fourth indication is given, the first transmission opportunity can be associated with the second TCI 1451, and the second transmission opportunity can be associated with the first TCI 1450.

[0392] The FDM method can be applied to PDSCH1403. PDSCH1403 can be received in two PDSCH transmission opportunities (the first transmission opportunity and the second transmission opportunity). For example, in the case of applying the FDM method (FDM method A, FDM method B), PUSCH1403 can be transmitted in two PUSCH transmission opportunities (the first transmission opportunity and the second transmission opportunity). The first transmission opportunity and the second transmission opportunity may not overlap in the frequency domain either. A transport block corresponding to PDSCH1403 can be received in the first transmission opportunity and the second transmission opportunity. PDSCH1403 can correspond to the same transport block in the first transmission opportunity and the second transmission opportunity. The RV (Redundancy version) in the first transmission opportunity may be different from the RV in the second transmission opportunity. When the first indication is given, the first transmission opportunity can be associated with the first TCI1450, and the second transmission opportunity can be associated with the first TCI1450. When the second indication is given, the first transmission opportunity can be associated with the second TCI1451, and the second transmission opportunity can be associated with the second TCI1451. When the third indication is given, the first transmission opportunity can be associated with the first TCI1450, and the second transmission opportunity can be associated with the second TCI1451. When the fourth indication is given, the first transmission opportunity can be associated with the second TCI1451, and the second transmission opportunity can be associated with the first TCI1450.

[0393] The SDM method can be applied to PDSCH1403. In the case of applying the SDM method, the first TCI state 1450 can correspond to the first CDM group, and the second TCI state 1451 can correspond to the second CDM group. When the first indication is given, the SDM method may not be applied to PDSCH1403 either. When the second indication is given, the SDM method may not be applied to PDSCH1403 either. When the third indication is given and in the case of applying the SDM method, the first TCI state 1450 can correspond to the first CDM group, and the second TCI state 1451 can correspond to the second CDM group. When the fourth indication is given and in the case of applying the SDM method, the first TCI state 1450 can correspond to the second CDM group, and the second TCI state 1451 can correspond to the first CDM group.

[0394] When the SDM method is applied to PDSCH1403 through upper layer parameter setting and a first indication is given, the SDM method may not be applied. In addition, one of the first TCI state 1450 and the second TCI state 1451 may be applied to PDSCH1403. When the SDM method is applied to PDSCH1403 through upper layer parameter setting and a second indication is given, the SDM method may not be applied. In addition, one of the first TCI state 1450 and the second TCI state 1451 may be applied to PDSCH1403. When it is set to apply the SDM method to PDSCH1403, the first indication is not expected. When it is set to apply the SDM method to PDSCH1403, the second indication is not expected.

[0395] The SFN method may be applied to PDSCH1403. For example, when the SFN method is applied, the same DMRS port may be transmitted (or received) from different panels for PDSCH1403 simultaneously. When the SFN method is applied to PDSCH1403, the DMRS port of PDSCH1403 may be QCL with the DL-RS of the first TCI state 1450 and the second TCI state 1451. When a first indication is given, the SFN method may not be applied to PDSCH1403 either. When a second indication is given, the SFN method may not be applied to PDSCH1403 either. When a third indication is given and the SFN method is applied, the DMRS port of PDSCH1403 may be QCL with the DL-RS of the first TCI state 1450 and the second TCI state 1451. When a fourth indication is given and the SFN method is applied, the DMRS port of PDSCH1403 may be QCL with the DL-RS of the first TCI state 1450 and the second TCI state 1451.

[0396] When the SFN method is applied to PDSCH1403 through upper layer parameter setting and a first indication is given, the SFN method may not be applied. In addition, one of the first TCI state 1450 and the second TCI state 1451 may be applied to PDSCH1403. When the SFN method is applied to PDSCH1403 through upper layer parameter setting and a second indication is given, the SFN method may not be applied. In addition, one of the first TCI state 1450 and the second TCI state 1451 may be applied to PDSCH1403. When it is set to apply the SFN method to PDSCH1403, the first indication is not expected. When it is set to apply the SFN method to PDSCH1403, the second indication is not expected.

[0397] It can be repeated for PDSCH1403. The terminal device 1 can receive the repetition of PDSCH1403. The terminal device 1 can receive PDSCH1403 over multiple time slots. For example, PDSCH1403 that transmits a transport block can be received over multiple time slots. The terminal device 1 can repeatedly receive a transport block (the transport block corresponding to PDSCH1403) over consecutive K time slots. K can be the number of repetitions. K can be provided by repetitionNumber. Providing repetitionNumber for PDSCH1403 can be applying repetition for PDSCH1403.

[0398] In the case of applying repetition to PDSCH 1403 and given a first indication, the first TCI state 1450 can be associated with K consecutive time slots. In the case of applying repetition to PDSCH 1403 and given a second indication, the second TCI state 1451 can be associated with K consecutive time slots. In the case of applying repetition to PDSCH 1403 and given a third indication, the first TCI state 1450 and the second TCI state 1451 can be associated with K consecutive time slots. For example, in the case of K = 2, the first TCI state 1450 can be applied to the first time slot, and the second TCI state 1451 can be applied to the second time slot. In the case of K > 2 and cyclic mapping being valid, the first TCI state 1450 and the second TCI state 1451 can be applied to the first and second time slots of K consecutive time slots respectively, and the same TCI state mapping pattern can follow the remaining time slots of the K consecutive time slots. In the case of K > 2 and sequential mapping being valid, the first TCI state 1450 can be applied to the first and second time slots of K consecutive time slots, and the second TCI state 1451 can be applied to the third and fourth time slots of K consecutive time slots, and the same TCI state mapping pattern can follow the remaining time slots of the K consecutive time slots. In the case of applying repetition to PDSCH 1403 and given a fourth indication, the first TCI state 1450 and the second TCI state 1451 can be associated with K consecutive time slots. For example, in the case of K = 2, the second TCI state 1451 can be applied to the first time slot, and the first TCI state 1450 can be applied to the second time slot. In the case of K > 2 and cyclic mapping being valid, the second TCI state 1451 and the first TCI state 1450 can be applied to the first and second time slots of K consecutive time slots respectively, and the same TCI state mapping pattern can follow the remaining time slots of the K consecutive time slots. In the case of K > 2 and sequential mapping being valid, the second TCI state 1451 can be applied to the first and second time slots of K consecutive time slots, and the first TCI state 1450 can be applied to the third and fourth time slots of K consecutive time slots, and the same TCI state mapping pattern can follow the remaining time slots of the K consecutive time slots.

[0399] Applying one or more TCI states to the PDSCH may be that the DMRS port (DMRS antenna port) of the PDSCH and the DL-RS of one or more TCI states are QCL. Applying one or more TCI states to the PDCCH may be that the DMRS port (DMRS antenna port) of the PDCCH and the DL-RS of one or more TCI states are QCL. Applying one or more TCI states to the PDCCH may be that one or more TCI states are applied to the CORESET for the PDCCH.

[0400] The TCI state applied to PDCCH1404 may be the activated TCI state 140. That is, one or more TCI states applied to PDCCH1404 may be indicated by the MAC. The TCI state applied to PDCCH1404 may be the indicated TCI state 1402. That is, one or more TCI states applied to PDCCH1404 may be indicated by the DCI. For example, when the number of the indicated TCI states 1402 is 0, the activated TCI state 1401 may be applied to PDCCH1404.

[0401] The SFN method may be applied to PDCCH1404. For example, when the SFN method is applied, the same DMRS port may be transmitted (or received) from different panels for PDCCH1404 simultaneously. When the SFN method is applied to PDCCH1404, the DMRS port of PDCCH1404 and the DL-RS of the first TCI state 1450 and the second TCI state 1451 may be QCL. When the SFN method is applied to PDCCH1404, the DMRS port of PDCCH1404 in the CORESET and the DL-RS of the first TCI state 1450 and the second TCI state 1451 may be QCL. When the first indication is given, the SFN method may not be applied to PDCCH1404 either. When the second indication is given, the SFN method may not be applied to PDCCH1404 either. When the third indication is given and when the SFN method is applied, the DMRS port of PDCCH1404 and the DL-RS of the first TCI state 1450 and the second TCI state 1451 may be QCL. When the fourth indication is given and when the SFN method is applied, the DMRS port of PDCCH1404 and the DL-RS of the first TCI state 1450 and the second TCI state 1451 may be QCL.

[0402] When the SFN method is applied to PDCCH 1404 through upper layer parameter setting, and when the first indication is given, the SFN method may not be applied. In addition, one of the first TCI state 1450 and the second TCI state 1451 may be applied to PDCCH 1404. When the SFN method is applied to PDCCH 1404 through upper layer parameter setting, and when the second indication is given, the SFN method may not be applied. In addition, one of the first TCI state 1450 and the second TCI state 1451 may be applied to PDCCH 1404. When the SFN method is set to be applied to PDCCH 1404, the first indication is not expected to be given. When the SFN method is set to be applied to PDCCH 1404, the second indication is not expected to be given.

[0403] When the SFN method is applied to PDCCH 1404, it is not expected to set the upper layer parameter indicating the first indication for PDCCH 1404. When the SFN method is applied to PDCCH 1404, it is not expected to set the upper layer parameter indicating the second indication for PDCCH 1404. When the upper layer parameter indicating the first indication for PDCCH 1404 is set, it is not expected to apply the SFN method to PDCCH 1404. When the upper layer parameter indicating the second indication for PDCCH 1404 is set, it is not expected to apply the SFN method to PDCCH 1404.

[0404] A search area link can be applied to PDCCH 1404. For example, a first search area set and a second search area set for PDCCH 1404 reception can be linked. For example, PDCCH 1404 reception can include a first PDCCH candidate and a second PDCCH candidate from the first search area set and the second search area set. The first search area set and the second search area set can be linked. In the case where the search area link is applied, a first indication can be given. In the case where the search area link is applied, a second indication can also be given. In the case where the search area link is applied, a third indication is not expected to be given. In the case where the search area link is applied, a fourth indication is not expected to be given. In the case where the search area link is applied, and where a first indication or a second indication is given in the first CORESET, and where a first indication or a second indication is given in the second CORESET, the first search area set corresponding to the first CORESET and the second search area corresponding to the second CORESET may not be linked. In the case where the search area link is applied, and where a first indication or a second indication is given in the first CORESET, and where a third indication or a fourth indication is given in the second CORESET, the first search area set corresponding to the first CORESET and the second search area corresponding to the second CORESET may not be linked. In the case where the search area link is applied, and where a third indication or a fourth indication is given in the first CORESET, and where a third indication or a fourth indication is given in the second CORESET, the first search area set corresponding to the first CORESET and the second search area corresponding to the second CORESET may not be linked. Applying a search area link to PDCCH 1404 can be to set an upper layer parameter searchSpaceLinking in the search area set of PDCCH 1404.

[0405] When applying the search area link, and when a first indication or a second indication is given in the first CORESET, and when a third indication or a fourth indication is given in the second CORESET, one of the first TCI state 1450 and the second TCI state 1451 can be applied to the second CORESET. When applying the search area link, and when a third indication or a fourth indication is given in the first CORESET, and when a third indication or a fourth indication is given in the second CORESET, one of the first TCI state 1450 and the second TCI state 1451 may not be applied to the first CORESET, and one of the first TCI state 1450 and the second TCI state 1451 can be applied to the second CORESET. When applying the search area link, the first search area set corresponding to the first CORESET and the second search area set corresponding to the second CORESET can be linked.

[0406] The terminal device 1 may include a receiving unit that receives a first PDCCH configured with a first DCI and a second PDCCH in at least one CORESET. In addition, the terminal device 1 may also include a transmitting unit that transmits a PUSCH scheduled by a second DCI configured in the second PDCCH. For example, the SFN method can be set to be applied to the second PDCCH. The search area link can be set to be applied to the second PDCCH. The first DCI can indicate the first TCI state and the second TCI state. When applying one of the first TCI state and the second TCI state to a CORESET, the search area link can be applied and the SFN method may not be applied. When applying both the first TCI state and the second TCI state to a CORESET, the SFN method can be applied and the search area link may not be applied. Setting to apply the SFN method can be setting the upper layer parameter sfnSchemePdcch. Setting to apply the search area link can be setting the upper layer parameter searchSpaceLinking in the search area set for the second PDCCH. The first TCI state can be the first TCI state 1450. The second TCI state can be the second TCI state 1451. The second PDCCH can be PDCCH1404. Applying the TCI state to the CORESET can be applying the TCI state to the PDCCH in the CORESET.

[0407] When the SFN method is set for the second PDCCH, it may not be expected to apply one of the first TCI state and the second TCI state to a CORESET. When the SFN method for the second PDCCH is not set and one of the first TCI state and the second TCI state is applied to a CORESET, the DMRS ports of the second PDCCH may be QCL with the DL-RS of one of the first TCI state and the second TCI state. When the SFN method is set for the second PDCCH and both the first TCI state and the second TCI state are applied to a CORESET, the DMRS ports of the second PDCCH may be QCL with the DL-RS of both the first TCI state and the second TCI state. When the SFN method is not set, it may not be expected to apply both the first TCI state and the second TCI state to a CORESET.

[0408] Applying one or both of the first TCI state and the second TCI state to a CORESET can be determined based on a higher layer parameter. When the higher layer parameter indicates the first indication, the first TCI state can be applied to a CORESET. When the higher layer parameter indicates the second indication, the second TCI state can be applied to a CORESET. When the higher layer parameter indicates the third indication, both the first TCI state and the second TCI state can be applied to a CORESET.

[0409] The terminal device 1 may include a receiving unit that receives a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI. The PDSCH-MTRP method may be set for the PDSCH. The PDSCH-MTRP method may be part or all of the SFN method, the FDM method, the TDM method, and the SDM method. The first DCI may indicate the first TCI state and the second TCI state. Applying one or both of the first TCI state and the second TCI state to the PDSCH can be determined based on the second DCI. When one of the first TCI state and the second TCI state is applied to the PDSCH, the PDSCH-MTRP method may not be applied to the PDSCH. When both the first TCI state and the second TCI state are applied to the PDSCH, the PDSCH-MTRP method may be applied to the PDSCH. Setting the PDSCH-MTRP method may be setting the higher layer parameter sfnSchemePdsch. Setting the PDSCH-MTRP method may be setting the higher layer parameter repetitionScheme.

[0410] It may not be expected to apply one of the first TCI state and the second TCI state to the PDSCH. In the case of applying both the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method can be applied to the PDSCH.

[0411] The second DCI may include a field different from the TCI field. In the case where a field indicates a first indication, the first TCI state can be applied to the PDSCH. In the case where a field indicates a second indication, the second TCI state can be applied to the PDSCH. In the case where a field indicates a third indication, both the first TCI state and the second TCI state can be applied to the PDSCH. The first DCI may be different from the second DCI. The first PDCCH may be different from the second PDCCH.

[0412] Hereinafter, the schemes of various devices of one scheme of the present embodiment will be described.

[0413] (1) To achieve the above object, the scheme of the present invention adopts the following means. That is, the first scheme of the present invention is a terminal device, the terminal device includes: a receiving unit that receives a first PDCCH configured with a first DCI and a second PDCCH in at least one CORESET; and a transmitting unit that transmits a PUSCH scheduled by a second DCI configured in the second PDCCH. In the terminal device, it is set to apply the SFN method to the second PDCCH, and it is set to apply a search area link to the second PDCCH. The first DCI indicates a first TCI state and a second TCI state. In the case of applying one of the first TCI state and the second TCI state to the one CORESET, the search area link is applied and the SFN method is not applied. In the case of applying both the first TCI state and the second TCI state to the one CORESET, the SFN method is applied and the search area link is not applied. Determining to apply one or both of the first TCI state and the second TCI state to the one CORESET is based on a higher layer parameter. In the case where the higher layer parameter indicates a first indication, the first TCI state is applied to the one CORESET. In the case where the higher layer parameter indicates a second indication, the second TCI state is applied to the one CORESET. In the case where the higher layer parameter indicates a third indication, both the first TCI state and the second TCI state are applied to the one CORESET.

[0414] (2) A second solution of the present invention is a terminal device, the terminal device comprising: a receiving unit that receives a first PDCCH configured with a first DCI and a second PDCCH in at least one CORESET; and a transmitting unit that transmits a PUSCH scheduled by a second DCI configured in the second PDCCH, the first DCI indicating a first TCI state and a second TCI state. When it is set to apply the SFN method to the second PDCCH, it is not expected to apply one of the first TCI state and the second TCI state to the one CORESET. When the SFN method is not set and one of the first TCI state and the second TCI state is applied to the one CORESET, the DMRS port of the second PDCCH and the one DL-RS are QCL. When the SFN method is set and both the first TCI state and the second TCI state are applied to the one CORESET, the DMRS port and the two DL-RSs are QCL. When the SFN method is not set, it is not expected to apply both the first TCI state and the second TCI state to the one CORESET. Applying one or both of the first TCI state and the second TCI state to the one CORESET is determined based on a higher layer parameter. When the higher layer parameter indicates a first indication, the first TCI state is applied to the one CORESET. When the higher layer parameter indicates a second indication, the second TCI state is applied to the one CORESET. When the higher layer parameter indicates a third indication, both the first TCI state and the second TCI state are applied to the one CORESET.

[0415] (3) A third aspect of the present invention is a base station apparatus, the base station apparatus comprising: a transmission unit that transmits a first PDCCH configured with a first DCI and a second PDCCH in at least one CORESET; and a reception unit that receives a PUSCH scheduled by a second DCI configured in the second PDCCH, the first DCI indicating a first TCI state and a second TCI state. When the SFN method is set to be applied to the second PDCCH, it is not expected that one of the first TCI state and the second TCI state is applied to the one CORESET. When the SFN method is not set to be applied and one of the first TCI state and the second TCI state is applied to the one CORESET, the DMRS port of the second PDCCH and the one DL-RS are QCL. When the SFN method is set to be applied and both the first TCI state and the second TCI state are applied to the one CORESET, the DMRS port and the two DL-RSs are QCL. When the SFN method is not set to be applied, it is not expected that both the first TCI state and the second TCI state are applied to the one CORESET. Applying one or both of the first TCI state and the second TCI state to the one CORESET is determined based on a higher layer parameter. When the higher layer parameter indicates a first indication, the first TCI state is applied to the one CORESET. When the higher layer parameter indicates a second indication, the second TCI state is applied to the one CORESET. When the higher layer parameter indicates a third indication, both the first TCI state and the second TCI state are applied to the one CORESET.

[0416] (4) A fourth aspect of the present invention is a terminal device. The terminal device includes a receiving unit that receives a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI. In the terminal device, it is set to apply the PDSCH-MTRP method to the PDSCH. The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method. The first DCI indicates a first TCI state and a second TCI state. One or both of the first TCI state and the second TCI state are applied to the PDSCH based on the second DCI. When one of the first TCI state and the second TCI state is applied to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH. When both the first TCI state and the second TCI state are applied to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH. The second DCI includes a field different from the TCI field. When the field indicates a first indication, the first TCI state is applied to the PDSCH. When the field indicates a second indication, the second TCI state is applied to the PDSCH. When the field indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

[0417] (5) A fifth aspect of the present invention is a terminal device. The terminal device includes a receiving unit that receives a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI. It is set to apply the PDSCH-MTRP method to the PDSCH. The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method. The first DCI indicates a first TCI state and a second TCI state. It is not expected that one of the first TCI state and the second TCI state is applied to the PDSCH. When both the first TCI state and the second TCI state are applied to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH. The second DCI includes a field different from the TCI field. When the field indicates a first indication, the first TCI state is applied to the PDSCH. When the field indicates a second indication, the second TCI state is applied to the PDSCH. When the field indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

[0418] (6) The sixth aspect of the present invention is a base station device. The base station device includes a transmission unit that transmits a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI. The PDSCH-MTRP method is set to be applied to the PDSCH. The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method. The first DCI indicates a first TCI state and a second TCI state. One or both of the first TCI state and the second TCI state are applied to the PDSCH based on the second DCI. When one of the first TCI state and the second TCI state is applied to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH. When both the first TCI state and the second TCI state are applied to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH. The second DCI includes a field different from the TCI field. When the field indicates a first indication, the first TCI state is applied to the PDSCH. When the field indicates a second indication, the second TCI state is applied to the PDSCH. When the field indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

[0419] The program operating in the base station device 3 and the terminal device 1 according to the present invention can be a program that controls a CPU (Central Processing Unit) or the like to implement the functions of the above-described embodiments related to one aspect of the present invention (a program that causes a computer to function). Then, the information processed by these devices is temporarily stored in a RAM (Random Access Memory) during its processing, and then stored in various ROMs such as a Flash ROM (Read Only Memory), an HDD (Hard Disk Drive), etc. It is read, corrected, and written by the CPU as needed.

[0420] It should be noted that part of the terminal device 1 and the base station device 3 of the above-described embodiments can also be implemented by a computer. In this case, it can be achieved by recording a program for implementing the control function on a computer-readable recording medium, reading the program recorded on the recording medium into a computer system, and executing it.

[0421] Note that the "computer system" mentioned here refers to the computer system built into the terminal device 1 or the base station device 3, and includes hardware such as the OS and external devices. In addition, the "computer-readable recording medium" refers to removable media such as floppy disks, magneto-optical disks, ROMs, CD-ROMs, and storage devices such as hard disks built into the computer system.

[0422] Moreover, the "computer-readable recording medium" may also include: a recording medium that stores a program dynamically for a short time, such as a communication line when sending a program via a network such as the Internet or a communication line such as a telephone line; and a recording medium that stores a program for a fixed time, such as a volatile memory inside a computer system of a server or a client in this case. In addition, the above program may be a program for implementing a part of the above functions, or a program that can implement the above functions by combining with a program already recorded in the computer system.

[0423] In addition, the base station device 3 in the above embodiment can also be implemented as an aggregate (device group) composed of multiple devices. Each device constituting the device group may have some or all of the functions or function blocks of the base station device 3 according to the above embodiment. As the device group, it is sufficient to have all the functions or function blocks of the base station device 3. In addition, the terminal device 1 according to the above embodiment can also communicate with the base station device as an aggregate.

[0424] In addition, the base station device 3 in the above embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or an NG-RAN (NextGen RAN, NR RAN). In addition, the base station device 3 in the above embodiment may also have some or all of the functions of the upper-layer node for the eNodeB and / or the gNB.

[0425] In addition, some or all of the terminal device 1 and the base station device 3 in the above embodiment can be typically implemented as an LSI as an integrated circuit, or can be implemented as a chipset. Each function block of the terminal device 1 and the base station device 3 can be individually chipized, or some or all of them can be integrated and chipized. In addition, the method of integrating into an integrated circuit is not limited to LSI, and can also be implemented by a dedicated circuit or a general-purpose processor. In addition, in the case where an integrated circuit technology replacing LSI appears with the progress of semiconductor technology, an integrated circuit based on this technology can also be used.

[0426] In addition, in the above-described embodiments, a terminal device as an example of a communication device has been described. However, the present invention is not limited thereto, and it can also be applied to fixed or non-mobile electronic devices installed indoors and outdoors, such as terminal devices or communication devices such as AV devices, kitchen devices, cleaning / washing devices, air conditioning devices, office devices, vending machines, and other household devices.

[0427] As described above, embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific configuration is not limited to this embodiment, and it also includes design changes and the like within the scope not departing from the gist of the present invention. In addition, the present invention can be variously modified within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. In addition, it also includes a configuration obtained by replacing elements having the same effect among the elements described in the above embodiments with each other. Industrial Applicability

[0428] The present invention can be used, for example, in communication systems, communication devices (such as mobile phone devices, base station devices, wireless LAN devices, or sensor devices), integrated circuits (such as communication chips), or programs. Description of Reference Numerals 1 (1A, 1B, 1C): Terminal device 3: Base station device 10, 30: Wireless transceiver unit 10a, 30a: Wireless transmission unit 10b, 30b: Wireless reception unit 11, 31: Antenna unit 12, 32: RF unit 13, 33: Baseband unit 14, 34: Upper layer processing unit 15, 35: Medium Access Control layer processing unit 16, 36: Radio Resource Control layer processing unit 91, 92, 93, 94: Search area set 300: Component carrier 301: Primary cell 302, 303: Secondary cell 700: Set of resource elements for PSS 710, 711, 712, 713: Sets of resource elements for PBCH and for DMRS of PBCH 720: Set of resource elements for SSS 3000: Point 3001, 3002: Resource grid 3003, 3004: BWP 3011, 3012, 3013, 3014: Offset 3100, 3200: Common Resource Block Set 1400: Set TCI State 1401: Activated TCI State 1402: Indicated TCI State 1403: PDSCH 1404: PDCCH 1450, 1451: TCI State

Claims

1. A terminal device, the terminal device includes a receiving unit, the receiving unit receives a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI, In the terminal device, It is set to apply the PDSCH-MTRP method to the PDSCH, The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method, The first DCI indicates a first TCI state and a second TCI state, Applying one or both of the first TCI state and the second TCI state to the PDSCH is determined based on a higher layer parameter, When applying one of the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH, When applying both the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH.

2. A terminal device, the terminal device includes a receiving unit, the receiving unit receives a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI, In the terminal device, It is set to apply the PDSCH-MTRP method to the PDSCH, The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method, The first DCI indicates a first TCI state and a second TCI state, It is not expected to apply one of the first TCI state and the second TCI state to the PDSCH, When applying both the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH.

3. The terminal device according to claim 1, wherein, When the higher layer parameter indicates a first indication, the first TCI state is applied to the PDSCH, When the higher layer parameter indicates a second indication, the second TCI state is applied to the PDSCH, When the higher layer parameter indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

4. A base station device, the base station device includes a transmitting unit, the transmitting unit transmits a first PDCCH configured with a first DCI, a second PDCCH configured with a second DCI, and a PDSCH scheduled by the second DCI, In the base station device, It is set to apply the PDSCH-MTRP method to the PDSCH, The PDSCH-MTRP method is part or all of the SFN method, the FDM method, the TDM method, and the SDM method, The first DCI indicates a first TCI state and a second TCI state, Applying one or both of the first TCI state and the second TCI state to the PDSCH is determined based on upper layer parameters. When applying one of the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH. When applying both the first TCI state and the second TCI state to the PDSCH, the PDSCH-MTRP method is applied to the PDSCH.

5. The base station device according to claim 4, wherein when the upper layer parameter indicates a first indication, the first TCI state is applied to the PDSCH. when the upper layer parameter indicates a second indication, the second TCI state is applied to the PDSCH. when the upper layer parameter indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

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