Terminal device and base station device

Abstract

To provide a terminal device that efficiently performs communication, a base station device, and a communication method used therein.SOLUTION: In a wireless communication system, a terminal device includes a reception unit that receives a first PDCCH on which first DCI is arranged, and a second PDCCH in at least one CORESET, and a transmission unit that transmits a PUSCH scheduled by second DCI arranged on the second PDCCH. For the second PDCCH, an SFN method and a search area link are applied. The first DCI indicates a first TCI state and a second TCI state. When one of the first TCI state and the second TCI state is applied to one CORESET, the search area link is applied and the SFN method is not applied. When both the first TCI state and the second TCI state are applied to one CORESET, the SFN method is applied and the search area link is not applied.SELECTED DRAWING: Figure 14

Description

[Technical Field]

[0001] The present invention relates to a terminal device and a base station device. [Background technology]

[0002] The radio access method and radio network for cellular mobile communications (hereinafter referred to as "Long Term Evolution (LTE)" or "EUTRA: Evolved Universal Terrestrial Radio Access") is being developed by the Third Generation Partnership Project (3GPP). rd This is being studied in the LTE Generation Partnership Project. In LTE, base station devices are also called eNodeBs (evolved NodeBs) and terminal devices are also called UEs (User Equipment). LTE is a cellular communication system in which areas covered by base station devices are arranged in multiple cell-like configurations. A single base station device may manage multiple serving cells.

[0003] 3GPP is currently studying the next-generation standard (NR: New Radio) to propose it to IMT (International Mobile Telecommunication)-2020, a standard for next-generation mobile communication systems formulated by the International Telecommunication Union (ITU) (Non-Patent Document 1). NR is a technology that combines eMBB (enhanced Mobile Broadband) and ), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication). .

[0004] 3GPP is currently studying the expansion of services supported by NR (non- Patent document 2). [Prior art documents] [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 [Problem to be solved by the invention]

[0006] The present invention provides a terminal device that performs efficient communication, a communication method used in the terminal device, a base station device that performs efficient communication, and a communication method used in the base station device. [Means for solving the problem]

[0007] (1) A first aspect of the present invention is a terminal device, comprising: a receiver that receives a first PDCCH in which a first DCI is arranged and a second PDCCH in at least one CORESET; and a transmitter that transmits a PUSCH scheduled by the second DCI arranged in the second PDCCH, wherein an SFN scheme is configured to be applied to the second PDCCH, a search space link is configured to be applied to the second PDCCH, and the first DCI is configured to be in a first TCI state. and a second TCI state, and if one of the first TCI state and the second TCI state applies to the one CORESET, the search space link is applied and the SFN technique is not applied, and if both the first TCI state and the second TCI state apply to the one CORESET, the SFN technique is applied and the search space link is not applied. The above-mentioned state and one or both of the second TCI state are applied to the one CORESET. The TCI state is determined based on a higher layer parameter, and if the higher layer parameter indicates a first indication, the first TCI state is applied to the one CORESET, and if the higher layer parameter indicates a second indication, the TCI state is determined based on a higher layer parameter. If the upper layer parameter indicates a third indication, the second TCI state is applied to the one CORESET, and if the upper layer parameter indicates a third indication, both the first TCI state and the second TCI state are applied to the one CORESET.

[0008] (2) A second aspect of the present invention is a terminal device, comprising: a receiver that receives a first PDCCH in which a first DCI is arranged and a second PDCCH in at least one CORESET; and a transmitter that transmits a PUSCH scheduled by the second DCI arranged in the second PDCCH, wherein the first DCI indicates a first TCI state and a second TCI state, and when an SFN scheme is configured to be applied for the second PDCCH, the first TCI state and the second TCI state are transmitted. It is not expected that one of the conditions will be applied to the one CORESET, and the SFN method will be applied. If the first TCI state and the second TCI state are not configured to be the same, and if one of the first TCI state and the second TCI state is applied to the one CORESET, the DMRS port of the second PDCCH is configured to be the same as the one DL-RS and QCL and if the SFN scheme is configured to be applied, and if both the first TCI state and the second TCI state are applied to the one CORESET, the DMRS port If the DL-RS and QCL are both DL-RS and QCL and the SFN method is not configured to be applied, it is not expected that both the first TCI state and the second TCI state will be applied to the one CORESET. The application of one or both of the first TCI state and the second TCI state to the one CORESET is determined based on an upper layer parameter, and if the upper layer parameter indicates a first indication, the first TCI state is applied to the one CORESET, and if the upper layer parameter indicates a first indication, the first TCI state is applied to the one CORESET. indicates a second indication, the second TCI state is applied to the one CORESET, and when the upper layer parameter indicates a third indication, both the first TCI state and the second TCI state are applied to the one CORESET.

[0009] (3) A third aspect of the present invention is a base station device, a transmitter that transmits one PDCCH and a second PDCCH in at least one CORESET; and a receiver that receives a PUSCH scheduled by a second DCI that is arranged in the second PDCCH. a receiving unit, wherein the first DCI indicates a first TCI state and a second TCI state, If the SFN method is configured to be applied for the second PDCCH, the first TCI state and the previous When one of the second TCI states is not expected to be applied to the one CORESET and the SFN method is not configured to be applied, and when one of the first TCI state and the second TCI state is applied to the one CORESET, the DMRS port of the second PDCCH is the one DL-RS and QCL, and the SFN method is configured to be applied, and when both the first TCI state and the second TCI state are applied to the one CORESET, the DMRS port is both DL-RS and QCL, and the SFN method is not configured to be applied, It is not expected that both the first TCI state and the second TCI state will be applied to the one CORESET. Whether one or both of the first TCI state and the second TCI state will be applied to the one CORESET is determined based on a higher layer parameter, and if the higher layer parameter indicates a first indication, the first TCI state will be applied to the one CORESET, and the higher layer parameter If the parameter indicates a second instruction, the second TCI state is applied to the one CORESET, and if the upper layer parameter indicates a third instruction, both the first TCI state and the second TCI state are applied to the one CORESET. [Effects of the Invention]

[0010] According to the present invention, the terminal device can perform communication efficiently, and the base station device can perform communication efficiently. [Brief explanation of the drawings]

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

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

[0013] floor(C) may be a floor function for real number C. For example, floor(C) may be a function that outputs the largest integer that does not exceed real number C. ceil(D) may be a ceiling function for real number D. For example, ceil(D) may be a function that outputs the smallest integer that does not fall below real number D. mod(E,F) is a function that outputs the remainder when E is divided by F. mod(E,F) is a function that outputs the value corresponding to the remainder when E is divided by F. exp(G)=e^G, where e is Napier's constant. H^I indicates H to the Ith power. max(J,K) is a function that outputs the maximum value among J and K. Here, if 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 among L and M. Here, if 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. "·" indicates multiplication.

[0014] In a wireless communication system according to an aspect of the present embodiment, at least Orthogonal Frequency Division Multiplexing (OFDM) is used. An OFDM symbol is a unit of 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, at least CP-OFDM (Cyclic Prefix - Orthogonal Frequency Division Multiplexing) is used. In the uplink, CP-OFDM Either DFT-s-OFDM (Discrete Fourier Transform - spread - Orthogonal Frequency Division Multiplex) or DFT-s-OFDM (Discrete Fourier Transform - spread - Orthogonal Frequency Division Multiplex) is used. DFT-s-OFDM is Transform precoding may be applied to .

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

[0016] Fig. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. In Fig. 1, the wireless communication system includes 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 will also be 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 transmission devices (or transmission points, transmission / reception devices, or transmission / reception points). When the base station device 3 is configured with multiple transmission devices, the multiple transmission devices may be located at different positions.

[0018] The base station device 3 may provide one or more serving cells. A serving cell may be defined as a set of resources used for wireless communication. A serving cell may also be 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 one or both of an uplink component carrier (uplink carrier). A serving cell may be configured to include one or both of two or more downlink component carriers and two or more uplink component carriers. Downlink component carriers and uplink component carriers are also collectively referred to as component carriers (carriers).

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

[0021] The resource grid is size,μ grid,x N RB sc where The resource grid is divided into common resource blocks N start,μ grid,x It starts from Resource Block N start,μ grid,x is also called the reference point of the resource grid.

[0022] The resource grid is subframe,μ symb It contains OFDM symbols.

[0023] The subscript x attached to the resource grid related parameters specifies the sending direction. For example, the subscript x indicates either the downlink or the uplink. It may also be used for

[0024] N size,μ grid,x is indicated by a parameter provided by the RRC layer (e.g., Data CarrierBandwidth) offset setting. start,μ grid,x is the bandwidth configuration indicated by parameters provided by the RRC layer (e.g., parameter OffsetToCarrier). The offset setting and band setting are the configuration of the SCS-specific carrier. This is the setting used for

[0025] Subcarrier spacing (SCS) for a certain subcarrier spacing setting μ )Δf is Δf=2 μ 15 kHz. Here, the subcarrier spacing setting μ is 0 , 1, 2, 3, or 4 may be indicated.

[0026] FIG. 2 shows a subcarrier spacing setting μ and the number of OFDM symbols per slot N according to one aspect of this embodiment. slot symb 2 shows an example of the relationship between the cyclic prefix (CP) and the cyclic prefix (CP) setting. In A, for example, if the subcarrier spacing setting μ is 2 and the CP setting is normal cyclic prefix (CP), N slot symb =14, N frame,μ slot =40, N subframe, μ slot In addition, in FIG. 2B, for example, if the subcarrier spacing setting μ is 2, If the CP setting is an extended cyclic prefix (CP), slot symb =12, N frame ,μ slot =40, N subframe,μ slot =4.

[0027] Time unit T c may be used to express a length in the time domain. c is T c =1 / (Δf max N f ) Δfmax = 480 kHz. f =409 6. The constant κ is κ=Δf max N f / (Δf ref N f,ref )=64. Δf ref is 1 5kHz. N f,ref is 2048.

[0028] The transmission of the signal in the downlink and / or the transmission of the signal in the uplink may be a period of length T f The radio frame (system frame, frame) may be organized into T f =(Δf max N f / 100)·T s = 10 ms. A radio frame consists of 10 subframes. The length of a 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 is.

[0029] An OFDM symbol is a time domain unit of a communication system. For example, an OFDM symbol may be a time domain unit of CP-OFDM. Also, an OFDM symbol may be a time domain unit of DFT-s-OFDM.

[0030] A slot may consist of multiple OFDM symbols, e.g., N consecutive OFDM symbols. slot symb One slot may be composed of OFDM symbols. For example, In the settings, N slot symb In addition, in the setting of the extended CP, Nslot symb =12.

[0031] For a given subcarrier spacing setting μ, the number and index of slots contained in the subframe may be given. For example, slot index n μ s ranges from 0 to N in the subframe subframe,μ slot The sub-characters may be given in ascending order as integer values ​​in the range -1. For setting the rear interval μ, the number and index of slots included in the radio frame may be given. Also, the slot index n μ s,f ranges from 0 to N in the radio frame. frame,μ slot Integer values ​​in the range -1 to +1 may be given in ascending order.

[0032] Fig. 3 is a diagram showing an example of a resource grid configuration method according to one aspect of this embodiment. The horizontal axis in Fig. 3 represents the frequency domain. Fig. 3 shows an example of a resource grid configuration with subcarrier spacing μ1 in a component carrier 300, and an example of a resource grid configuration with subcarrier spacing μ2 in the component carrier. In this way, one or more subcarrier spacings may be set for a given component carrier. Fig. 3 assumes that μ1 = μ2-1, but various aspects of this embodiment are not limited to the condition μ1 = μ2-1.

[0033] The component carrier 300 is a band having a predetermined width in the frequency domain.

[0034] Point 3000 is an identifier for identifying a certain subcarrier. The point 3000 is also called point A. The common resource block (CRB) set 3100 is a common resource block for the subcarrier spacing setting μ1. It's a rock set.

[0035] Among the common resource block set 3100, the common resource block including point 3000 The blocks (black blocks in the common resource block set 3100 in FIG. 3) are also called reference points of the common resource block set 3100. The reference point of the common resource block set 3100 may 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 indicated by the number of common resource blocks for the subcarrier spacing setting μ1. The resource grid 3001 is N size,μ grid1,x It contains common resource blocks.

[0037] The offset 3013 is the distance from the reference point of the resource grid 3001 to the reference point (N start,μ BWP,i1 ) is the offset to

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

[0039] In the common resource block set 3200, the common resource block including the point 3000 (the black block in the common resource block set 3200 in FIG. 3) is also referred to as the reference point of the common resource block set 3200. The reference point of the common resource block set 3200 may 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 indicated by the number of common resource blocks relative to the subcarrier spacing μ. The resource grid 3002 is N size,μ grid2,x It contains common resource blocks.

[0041] The offset 3014 is the distance 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 ) is the offset to

[0042] 4 is a diagram showing an example of the configuration of a resource grid 3001 according to one aspect of this embodiment. In the resource grid of FIG. 4, the horizontal axis represents OFDM symbol index l sym and the vertical axis is the subcarrier index k sc The resource grid 3001 is size,μ grid1,x N RB sc contains N subcarriers, subframe,μ symb Contains OFDM symbols. Within the grid, subcarrier index k sc and OFDM symbol index l sym The resource specified by is also called a resource element (RE).

[0043] Resource Block (RB) is N RB sc Contains consecutive subcarriers Resource blocks are divided into common resource blocks, physical resource blocks (PRBs), and virtual resource blocks (VRBs). Here, N RB sc =12.

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

[0045] The common resource blocks for a given subcarrier spacing setting μ are indexed in a given common resource block set in the frequency domain in ascending order starting from 0. The common resource block with index 0 for a given subcarrier spacing setting μ contains (or collides with, or coincides with) point 3000. The index n of the common resource block for a given subcarrier spacing setting μ μ CRB is n μ CRB =ceil(k sc / N RB sc ) relationship is satisfied. Here, k sc The subcarrier with 0 corresponds to point 3000. It is a subcarrier having the same center frequency as the center frequency of the subcarrier being used.

[0046] The physical resource blocks for a given subcarrier spacing setting μ are given as follows in a given BWP: The indexes are assigned in ascending order starting from 0 in the frequency domain. The index n of the physical resource block for a given subcarrier spacing setting μ is μ PRB is n μ CRB =n μ PRB +N start,μ BWP,i where N start,μ BWP,i denotes the reference point of the BWP with index i.

[0047] A BWP is defined as a subset of common resource blocks contained in a resource grid. The BWP is located at the reference point N of the BWP. start,μ BWP,i Starting with N size,μ BWP,i Common litho The BWP configured for a downlink carrier is also called a downlink BWP. The BWP configured for an uplink component carrier is also called an uplink BWP.

[0048] An antenna port may be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. For example, a channel may correspond to a physical channel, a symbol may correspond to an OFDM symbol, a symbol may correspond to a resource block unit, or a symbol may correspond to a resource element.

[0049] When the large-scale properties of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port, the two antenna ports are said to be Quasi Co-Located (QCL). Here, the large-scale characteristics may include at least long-range channel characteristics. The large-scale characteristics may include at least some or all of delay spread, Doppler spread, Doppler shift, average gain, average delay, and beam parameters (spatial Rx parameters). The first antenna port and the second antenna port are QCLs in terms of beam parameters when the receiving beam assumed by the receiving side for the first antenna port and the second antenna port are QCLs in terms of beam parameters. The first antenna port and the second antenna port are QCLs in terms of beam parameters when the transmission beam assumed by the receiver for the first antenna port is the same (or corresponds to) the transmission beam assumed by the receiver for the first antenna port. The transmission beam assumed by the receiving side for the second antenna port may be the same (or correspond to) the transmission beam assumed by the receiving side for the second antenna port. The terminal device 1 assumes that the two antenna ports are QCLs if the large-scale characteristics of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at the other antenna port. The fact that the two antenna ports are QCLs may mean that the two antenna ports are assumed to be QCLs. The large-scale characteristics may be referred to as QCL parameters. stomach.

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

[0051] The two antenna ports may be type A QCLs, which may indicate that a first large-scale characteristic of a channel through which symbols are transmitted at one antenna port can be estimated from a channel through which symbols are transmitted at another antenna port. The two antenna ports may be type B QCLs, which may indicate that a second large-scale characteristic of a channel through which symbols are transmitted at one antenna port can be estimated from a channel through which symbols are transmitted at another antenna port. The two antenna ports may be type C QCLs, which may indicate that a third large-scale characteristic of a channel through which symbols are transmitted at one antenna port can be estimated from a channel through which symbols are transmitted at another antenna port. The two antenna ports may be type D QCLs, which may indicate that a fourth large-scale characteristic of a channel through which symbols are transmitted at one antenna port can be estimated from a channel through which symbols are transmitted at another antenna port. The first large-scale characteristic may include all of Doppler shift, Doppler spread, mean delay, and delay spread. The second large-scale characteristic may include all of Doppler shift and Doppler spread. The third large-scale characteristic may include all of the Doppler shift and the average delay. The fourth large-scale characteristic may include spatial reception parameters (spatial direction information, beam information). An antenna port for a DMRS may be a DMRS port. An antenna port for a PTRS may be a PTRS port. An antenna port associated with a PTRS may be a PTRS port. An antenna port for an SRS may be an SRS port. An antenna port for a DMRS may be a DMRS port. An antenna port associated with a DMRS may be a DMRS port.

[0052] Carrier aggregation is the process of providing multiple aggregated serving The carrier aggregation may be performed by using a cell. The carrier aggregation may be performed by using a plurality of aggregated component carriers. The carrier aggregation may be performed by using a plurality of aggregated downlink component carriers. The carrier aggregation may be performed by using a plurality of aggregated uplink component carriers.

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

[0054] The wireless transceiver 30 includes at least a wireless transmitter 30a and part or all of a wireless receiver 30b. The baseband unit included in the wireless transmitter 30a and the baseband unit included in the wireless receiver 30b may have the same or different device configurations. The RF unit included in the wireless transmitter 30a and the RF unit included in the wireless receiver 30b may have the same or different device configurations. The antenna unit included in the wireless transmitter 30a and the wireless receiver The antenna units included in the receiving unit 30b may have the same or different device configurations.

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

[0056] For example, the radio receiver 30b may receive a PRACH. For example, the radio receiver 30b may receive and demodulate a PUCCH. For example, the radio receiver 30b may receive and demodulate a PUSCH. For example, the radio receiver 30b may receive a PUCCH DMRS. For example, the radio receiver 30b The radio receiver 30b may receive a PUSCH DMRS. For example, the radio receiver 30b may receive an UL PTRS. For example, the radio receiver 30b may receive an SRS.

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

[0058] The medium 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 processing of the RRC layer. The RRC layer processing unit 36 ​​processes various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 36 ​​manages the RRC message received from the terminal device 1. Set the parameters based on the message.

[0060] The radio transceiver 30 (or the radio transmitter 30a) performs processing such as modulation and encoding. The radio transceiver 30 (or the radio transmitter 30a) modulates, encodes, and transmits downlink data. The radio transmitting / receiving unit 30 (or the radio transmitting unit 30a) generates a physical signal by generating a baseband signal (converting it into a time-continuous signal) and transmits it to the terminal device 1. Alternatively, the signal may be arranged on a component carrier and transmitted to the terminal device 1.

[0061] The radio transmitting / receiving unit 30 (or the radio receiving unit 30b) performs processes such as demodulation and decoding. The wireless transceiver 30 (or the wireless receiver 30b) separates, demodulates, and The radio transmitting / receiving unit 30 (or the radio receiving unit 30b) may perform a channel access procedure prior to transmitting a 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 input from the RF unit 32 into The baseband unit 33 removes a portion corresponding to a CP (Cyclic Prefix) from the converted digital signal, and performs the following on the signal from which the CP has been removed: A fast Fourier transform (FFT) is performed to extract the frequency domain signal.

[0064] The baseband unit 33 performs an inverse fast Fourier transform (IFFT) on the data to generate OFDM symbols, adds a CP to the generated OFDM symbols, and outputs the baseband symbols. The baseband unit 33 generates 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 unnecessary frequency components from the analog signal input from the baseband unit 33, and up-converts the analog signal to a carrier frequency. The RF unit 32 controls the transmission power. The RF unit 32 may also be referred to as a transmission power control unit.

[0066] For the terminal device 1, one or more serving cells (or component carriers, downlink component carriers, uplink component carriers) may be configured.

[0067] Each of the serving cells configured for the terminal device 1 is a PCell (Primary cell, The cell may be any one of a Primary Cell (PSCell), a Primary SCG cell (PSCell), and a Secondary Cell (SCell).

[0068] The PCell is a serving cell included in an MCG (Master Cell Group). The PCell is a cell (cell) in which the terminal device 1 performs an initial connection establishment procedure or a connection re-establishment procedure. (cells where the treatment was performed).

[0069] A PSCell is a serving cell included in an SCG (Secondary Cell Group). , is the serving cell to which random access is performed by the terminal device 1.

[0070] An SCell may be included in either an MCG or an SCG.

[0071] A serving cell group (cell group) is a term that includes at least an MCG and an SCG. A serving cell group may include one or more serving cells (or component carriers). One or more serving cells (or component carriers) included in a serving cell group may be operated by carrier aggregation.

[0072] One or more downlink BWPs may be configured for each serving cell (or downlink component carrier). One or more uplink BWPs are configured for each component carrier. That's fine.

[0073] Of one or more downlink BWPs configured for a serving cell (or a downlink component carrier), one downlink BWP is set as the active downlink BWP. may be configured (or one downlink BWP may be activated). Of one or more uplink BWPs configured for a serving cell (or uplink component carrier), one uplink BWP is set as the active uplink BWP. (Alternatively, one uplink BWP may be activated).

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

[0075] PDSCH, PDCCH, and CSI-RS are transmitted in downlink BWPs other than the active downlink BWP ( The terminal device 1 may not receive the signal in the inactive downlink BWP. In a downlink BWP that is not an active downlink BWP, the reception of PDSCH, PDCCH, and CSI-RS is PUCCH and PUSCH are not active uplink BWPs and therefore no transmission is attempted. It may not be transmitted in the downlink BWP (inactive uplink BWP). 1 may not transmit PUCCH and PUSCH in an uplink BWP that is not an active uplink BWP. Active BWPs are collectively referred to as inactive BWPs.

[0076] A downlink BWP switch is a process of switching one active UE in a serving cell. Deactivate the downlink BWP and deactivate the in-band BWP of the serving cell. This is the procedure to activate one of the active downlink BWPs. Downlink BWP switching may be controlled by the BWP field included in the downlink control information. Downlink BWP switching may also be controlled based on higher layer parameters. good.

[0077] Uplink BWP switching is used to deactivate one active uplink BWP and activate any inactive uplink BWP other than the one active uplink BWP. The handover may be controlled by the BWP field included in the downlink control information. BWP switching of a link may be controlled based on higher layer parameters.

[0078] Of one or more downlink BWPs configured for the serving cell, two or more A downlink BWP does not have to be set as the active downlink BWP. For a serving cell, one downlink BWP may be active at a given time.

[0079] Two or more of one or more uplink BWPs configured for the serving cell An uplink BWP does not have to be set as the active uplink BWP. For a serving cell, one uplink BWP may be active at a given time.

[0080] Fig. 6 is a schematic block diagram showing an example configuration of a terminal device 1 according to one aspect of the present embodiment. As shown in Fig. 6, the terminal device 1 includes at least one or all of a radio transmission / reception unit (physical layer processing unit) 10 and an upper layer processing unit 14. The radio transmission / reception unit 10 includes at least an antenna unit 11, an RF unit 12, and part or all of a baseband unit 13. The upper layer processing unit 14 includes at least a medium access control layer processing unit 15 and part or all of a radio resource control layer processing unit 16.

[0081] The wireless transceiver 10 includes at least a wireless transmitter 10a and a part or all of a wireless receiver 10b. The device configuration of the baseband unit 13 included in 10b may be the same or different. The RF unit 12 included in the wireless transmitting unit 10a and the RF unit 12 included in the wireless receiving unit 10b may have the same configuration or may have different configurations. The antenna unit 11 and the antenna unit 11 included in the wireless receiving unit 10b have the same device configuration. may or may not be the same.

[0082] For example, the radio transmitting unit 10a may generate and transmit a baseband signal of a PRACH. For example, the radio transmitting unit 10a may generate and transmit a baseband signal of a PUCCH. For example, the radio transmitting unit 10a may generate and transmit a baseband signal of a PUSCH. For example, the radio transmitting unit 10a may generate and transmit a baseband signal of a PUCCH DMRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal of a PUSCH DMRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal of a UL PTRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal of a PUCCH DMRS. The receiving unit 10a may generate and transmit a baseband signal of the SRS.

[0083] For example, the radio receiving unit 10b may receive and demodulate a PDSCH. For example, the radio receiving unit 10b may receive and demodulate a PDCCH. For example, the radio receiving unit 10b may receive a PBCH and For example, the wireless receiving unit 10b may receive a synchronization signal. The wireless receiver 10b may receive a PDSCH DMRS. For example, the wireless receiver 10b may receive a PDCCH DMRS. For example, the wireless receiver 10b may receive a CSI-RS. For example, the wireless receiver 10b may receive a DL PTRS.

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

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

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

[0087] The radio transmission / reception unit 10 (or the radio transmission unit 10a) performs processing such as modulation and encoding. The radio transceiver 10 (or the radio transmitter 10a) modulates, encodes, and transmits uplink data. The radio transmitter / receiver 10 (or the radio transmitter 10a) generates a physical signal by generating a baseband signal (converting it into a time-continuous signal) and transmits it to the base station device 3. It may be arranged in a certain BWP (active uplink BWP) and transmitted to the base station device 3.

[0088] The radio transmitting / receiving unit 10 (or the radio receiving unit 10b) performs processes such as demodulation and decoding. The radio transceiver 10 (or the radio receiver 30b) may receive a physical signal in a certain BWP (active downlink BWP) of a certain serving cell. The radio receiving unit 10b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information as The radio transmission / reception unit 10 (radio reception unit 10b) outputs the physical signal to the upper layer processing unit 14. A channel access procedure may be performed prior to the

[0089] The RF unit 12 converts (down-converts) the signal received via the antenna unit 11 into a baseband signal by quadrature demodulation, and removes unnecessary frequency components. The analog signal processed by the digital signal processing unit 12 is output 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 extracts a cyclic prefix (CP) from the converted digital signal. The signal from which the CP has been removed is subjected to a fast Fourier transform (FFT) to extract the signal in the frequency domain.

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

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

[0093] The physical signals (signals) will be explained below.

[0094] The physical signal is a general term for a downlink physical channel, a downlink physical signal, an uplink physical channel, and an uplink physical channel. The physical channel is a general term for a downlink physical channel and an uplink physical channel. The physical signal is a general term for a downlink physical signal and an uplink physical signal. The physical signal may also be called a reference signal.

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

[0096] PUCCH is used to transmit uplink control information (UCI). The PUCCH may be used. The PUCCH may be transmitted to deliver (deliver, transmit, convey) uplink control information. The uplink control information may be mapped to the PUCCH. The terminal device 1 may transmit the PUCCH in which the uplink control information is mapped. Base station The device 3 may receive a PUCCH in which the uplink control information is arranged.

[0097] Uplink control information (uplink control information bit, uplink control information sequence, uplink control information type) is used in combination with channel state information (CSI), schedule The packet contains at least part or all of the Scheduling Request (SR) and Hybrid Automatic Repeat request ACKnowledgement (HARQ-ACK) information.

[0098] The channel state information is also referred to as a channel state information bit or a channel state information sequence. The scheduling request is also referred to as a scheduling request bit or a scheduling request sequence. The HARQ-ACK information is also referred to as a HARQ-ACK information bit or a HARQ-ACK information sequence.

[0099] The HARQ-ACK information may include at least a HARQ-ACK corresponding to a transport block (TB). The HARQ-ACK may indicate an acknowledgement (ACK) or a negative acknowledgement (NACK) corresponding to the transport block. The ACK may indicate that the transport block has been decoded successfully. The NACK may indicate that the transport block has not been decoded successfully. The HARQ-ACK information may include a HARQ-ACK codebook including one or more HARQ-ACK bits.

[0100] A transport block is a sequence of information bits delivered from higher layers. Here, the sequence of information bits is also called a bit sequence. Here, the transport block may be transmitted via an Uplink-Shared Channel (UL-SCH) in the transport layer.

[0101] HARQ-ACK for a transport block may be referred to as HARQ-ACK for a PDSCH. In this case, the "HARQ-ACK for PDSCH" is transmitted to the transport included in the PDSCH. Indicates the HARQ-ACK for the block.

[0102] HARQ-ACK is performed for one CBG (Code Block Group) included in a transport block. It may also indicate a corresponding ACK or NACK.

[0103] A scheduling request is a request to retrieve the UL-SCH for a new transmission. The scheduling request bit may be used at least to request a resource. The scheduling request bit may be used to indicate either a positive SR or a negative SR. When the scheduling request bit indicates a positive SR, this is also referred to as "a positive SR is transmitted." A positive SR indicates that the terminal device 1 is to transmit a UL-SCH A positive SR may indicate that resources of UL-SCH are requested for initial transmission. A positive SR may indicate that a scheduling request is triggered by a higher layer. A positive SR may be transmitted when a scheduling request is indicated by a higher layer. When the scheduling request bit indicates a negative SR, this is also referred to as "a negative SR is transmitted." A negative SR may indicate that no resources of UL-SCH are requested by the terminal device 1 for initial transmission. A negative SR may indicate that no resources of UL-SCH are requested for initial transmission by the terminal device 1. A positive SR may indicate that no scheduling request is triggered by higher layers. A negative SR may be conveyed when no scheduling request is indicated by higher layers.

[0104] The channel state information may include at least some or all of a Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), and a Rank Indicator (RI). The CQI is an indicator related to the quality of a propagation path (e.g., propagation strength) or the quality of a physical channel, and the PMI is an indicator related to a precoder. RI is an index related to the transmission rank (or the number of transmission layers).

[0105] The channel state information is an indicator of the reception state of at least the physical signal (e.g., CSI-RS) used for channel measurement. The value of the channel state information is used for channel measurement. The channel measurement may be determined by the terminal device 1 based on the reception conditions assumed by at least the physical signals used for the channel measurement. The channel measurement may include an interference measurement.

[0106] The PUCCH may correspond to a PUCCH format. The PUCCH may be a set of resource elements used to convey the PUCCH format. The PUCCH may include a PUCCH format. The PUCCH may be transmitted with a certain PUCCH format. The PUCCH format may be interpreted as a format of information. The PUCCH format may also be interpreted as a set of information set in a certain information format.

[0107] The PUSCH carries transport blocks and / or uplink control information. The transport block may be placed on the PUSCH. The transport block delivered by the UL-SCH may be arranged in the PUSCH. The uplink control information may be arranged in the PUSCH. A PUSCH in which one or both of the uplink control information and the PUSCH are arranged may be transmitted. The base station device 3 may receive a PUSCH in which one or both of a transport block and uplink control information are allocated.

[0108] The PRACH may be transmitted to carry a random access preamble. The base station device 1 may transmit the PRACH. The base station device 3 may receive the PRACH. column x u,v (n) is x u,v (n)=x u (mod(n+C v ,L RA )), where x u is a ZC (Zadoff-Chu) sequence. u x u =exp(-jπui(i+1) / L RA ) by j is the imaginary unit. Also, π is the ratio of the circumference of a circle to its circumference. Also, C v corresponds to the cyclic shift of the PRACH sequence. RA corresponds to the length of the PRACH sequence. RA is 839 or 139. Also, i ranges from 0 to L RA -1 and u is the sequence index for the PRACH sequence.

[0109] For each PRACH opportunity, 64 random access preambles are defined. The access preamble is the cyclic shift C of the PRACH sequence. v , and the sequence index u for the PRACH sequence. An index may be assigned to each of the bulls.

[0110] The uplink physical signal may correspond to a set of resource elements. The uplink physical signal does not have to be used to transmit information generated in a higher layer. The uplink physical signal may be used to transmit information generated in a 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. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical signals may be used. ·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 DMRS for PUSCH and DMRS for PUCCH.

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

[0113] The transmission of the PUSCH and the transmission of the DMRS for the PUSCH are indicated by one DCI format. The PUSCH and the DMRS for the PUSCH may be collectively referred to as a PUSCH. Transmitting the PUSCH may be equivalent to transmitting the PUSCH and the DMRS for the PUSCH.

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

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

[0116] The transmission of the PUCCH and the transmission of the DMRS for the PUCCH are indicated by one DCI format. Mapping of PUCCH to resource elements (resource element mapping), and to the resource elements of the DMRS for the PUCCH One or both of the mappings may be provided by one PUCCH format. The PUCCH and the DMRS for the PUCCH may be collectively referred to as the PUCCH. This may involve transmitting a PUCCH and a DMRS for the PUCCH.

[0117] The propagation path of the PUCCH may be estimated from the DMRS for the PUCCH.

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

[0119] The PBCH may be transmitted to convey one or both of a Master Information Block (MIB) and physical layer control information. Here, the physical layer control information is information generated in the physical layer. The MIB is a set of parameters placed on a Broadcast Control Channel (BCCH), which is a logical channel of the MAC layer. The BCCH is a channel of the transport layer. The MIB and / or physical layer control information may be mapped to a certain BCH. The BCH may be mapped to a PBCH. The terminal device 1 may receive a PBCH in which one or both of the MIB and the physical layer control information are mapped. The base station device 3 may transmit a PBCH in which one or both of the MIB and the physical layer control information are mapped. stomach.

[0120] For example, the physical layer control information may be configured with 8 bits. The physical layer control information may include at least some or all of the following 0A to 0D. 0A) Radio frame bit 0B) Half radio frame (half system frame, half frame) bit 0C) SS / PBCH block index bit 0D) Subcarrier offset bit

[0121] The radio frame bits are used to indicate the radio frame in which the PBCH is transmitted (the radio frame including the slot in which the PBCH is transmitted). The radio frame bits include 4 bits. The radio frame bits may be configured by 4 bits of a 10-bit radio frame indicator. For example, the radio frame indicator may be used to identify at least radio frames with index 0 to index 1023.

[0122] The half radio frame bit is used to indicate whether the PBCH is transmitted in the first five subframes or the last five subframes of a radio frame in which the PBCH is transmitted. Here, a half radio frame may be configured to include five subframes. Alternatively, a half radio frame may be configured to include the first five subframes of ten subframes included in a radio frame. Alternatively, a half radio frame may be configured to include the last five subframes of ten subframes included in a radio 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 may be configured with 3 bits of a 6-bit SS / PBCH block index indicator. The SS / PBCH block index indicator may be used at least to identify SS / PBCH blocks from index 0 to index 63.

[0124] The subcarrier offset bit is used to indicate a subcarrier offset, which may be used to indicate the difference between the first subcarrier to which the PBCH is mapped and the first subcarrier to which the control resource set with index 0 is mapped.

[0125] The PDCCH may be transmitted to convey downlink control information (DCI). The downlink control information may be arranged in the PDCCH. The terminal device 1 The base station device 3 may receive a PDCCH in which downlink control information is arranged. Alternatively, a PDCCH in which network control information is allocated may be transmitted.

[0126] The downlink control information may be transmitted with a DCI format. The DCI format may be interpreted as a format of the downlink control information. The DCI format may be It may 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 downlink DCI format is a general term for DCI format 0_0 and DCI format 0_1. The downlink DCI format is a general term for DCI format 1_0 and DCI format 1_1.

[0128] DCI format 0_0 is used at least for scheduling PUSCHs allocated to a cell. DCI format 0_0 is used for scheduling some of the fields from 1A to 1E or It consists of at least all of the above. 1A) 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 (Modulation and Coding Scheme field)

[0129] The DCI format specific field is a DCI format specific field. The DCI format specification field may indicate whether the format is an uplink DCI format or a downlink DCI format. That is, the DCI format specification field may be included in each of the uplink DCI format and the downlink DCI format. Here, the DCI format specification field included in DCI format 0_0 may indicate 0.

[0130] The frequency domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of frequency resources for the PUSCH.

[0131] The time domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of time resources for the PUSCH.

[0132] The frequency hopping flag field indicates whether frequency hopping is applied to the PUSCH. It may be used to indicate whether or not

[0133] The MCS field included in DCI format 0_0 specifies the modulation scheme for PUSCH, and , and the target coding rate for the transport block placed on the PUSCH. The size of the transport block (TBS) allocated to the PUSCH may be determined based on the target coding rate and one or more of the modulation schemes for the PUSCH. may be determined based on both.

[0134] DCI format 0_0 does not include fields used for CSI requests. It's not necessary.

[0135] DCI format 0_0 may not include a carrier indicator field. That is, the serving cell to which the uplink component carrier on which the PUSCH scheduled by DCI format 0_0 is allocated belongs uses the DCI format 0_0. The serving cell is the same as the uplink component carrier on which the PDCCH including the The terminal device 1 may transmit a PUSCH scheduled in accordance with the DCI format 0_0 to an uplink component carrier of a serving cell based on detecting the DCI format 0_0 in a downlink component carrier of the serving cell. It may be recognized that the carrier may be placed.

[0136] DCI format 0_0 may not include the BWP field (BWP indication field). Here, DCI format 0_0 is used to transmit PUSCH without changing the active uplink BWP. The terminal device 1 may determine whether the DCI format 0_0 is an active uplink DCI format used for scheduling the PUSCH. It may be recognized that the PUSCH is transmitted without switching the link BWP.

[0137] DCI format 0_1 ​​is used at least for scheduling PUSCHs allocated to a cell. DCI format 0_1 ​​is used for part of fields 2A to 2H or It consists of at least all of the above. 2A) DCI format specific fields 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 ​​may indicate 0.

[0139] The frequency domain resource allocation field included in DCI format 0_1 ​​may be used to indicate the allocation of frequency resources for the PUSCH.

[0140] The time domain resource allocation field included in DCI format 0_1 ​​may be used to indicate the allocation of time resources for the PUSCH.

[0141] The MCS field included in DCI format 0_1 ​​specifies the modulation scheme for PUSCH, and and / or may at least be used to indicate some or all of the target code rate.

[0142] The BWP field of DCI format 0_1 ​​is the The DCI format 0_1 ​​may be used to indicate an uplink BWP in which a PUSCH to be scheduled is arranged. That is, the DCI format 0_1 ​​may involve a change of the active uplink BWP. The terminal device 1 may recognize the uplink BWP in which the PUSCH is arranged based on detecting the DCI format 0_1 ​​used for scheduling the PUSCH.

[0143] DCI format 0_1, which does not include the BWP field, is used to change the active uplink BWP. The terminal device 1 may use a DCI format 0_1 ​​used for scheduling the PUSCH and a DCI format that does not include the BWP frame. Based on detecting the DCI format D0_1 that does not include the field, it may be recognized that the PUSCH is to be transmitted without switching the active uplink BWP.

[0144] DCI format 0_1 ​​includes a BWP field, but terminal device 1 does not include the DCI format If the BWP switching function by 0_1 is not supported, the BWP field is set to terminal device 1. Therefore, it may be ignored. In other words, the terminal device 1 that does not support the BWP switching function , DCI format 0_1 ​​used for PUSCH scheduling and BWP format Based on detecting the DCI format 0_1 ​​including the field, the terminal device 1 may recognize that it will transmit the PUSCH without switching the active uplink BWP. If the terminal device 1 supports the BWP switching function, it may report that "the terminal device 1 supports the BWP switching function" in the RRC layer capability information reporting procedure.

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

[0146] If DCI format 0_1 ​​includes a carrier indicator field, The rear indicator field indicates the uplink component carrier in which the PUSCH is located. DCI format 0_1 ​​may be used to indicate a carrier indicator. If the field is not included, the uplink component carrier on which the PUSCH is allocated is A PDCCH including DCI format 0_1 ​​used for scheduling the PUSCH is arranged. When the number of uplink component carriers configured in the terminal device 1 in a certain serving cell group is two or more (when uplink carrier aggregation is operated in a certain serving cell group), the scheduling of the PUSCH allocated to the certain serving cell group may be the same as the uplink component carrier configured in the certain serving cell group. The carrier indicator field included in DCI format 0_1 ​​used for The number of bits may be 1 or more (for example, 3 bits). When the number of uplink component carriers configured in the terminal device 1 in a certain serving cell group is 1 (when uplink carrier aggregation is not operated in a certain serving cell group), the scheduling of the PUSCH allocated to the certain serving cell group Carrier indicator field included in DCI format 0_1 ​​used for The number of bits in the carrier indicator field may be 0 (or the DCI format 0_1 ​​used for scheduling the PUSCH allocated to the certain serving cell group may not include the carrier indicator field).

[0147] DCI format 1_0 is used at least for scheduling PDSCHs allocated to a certain cell. DCI format 1_0 may use at least some or all of 3A to 3F. It also includes the following: 3A) DCI Format Specific Fields 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 indicate 1.

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

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

[0151] The MCS field included in DCI format 1_0 specifies the modulation scheme for PDSCH, and , and may be used to indicate at least one or both of the target coding rates. The target coding rate is the target code for the transport block placed on the PDSCH. The size of the transport block (TBS) allocated to the PDSCH may be determined by the target coding rate and one or more of the modulation schemes for the PDSCH. may be determined based on both.

[0152] The PDSCH_HARQ feedback timing indication field specifies the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH. It may also be used to indicate a

[0153] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set. A PUCCH resource set may include one or more PUCCH resources.

[0154] DCI format 1_0 may not include a carrier indicator field. That is, the downlink component carrier on which the PDSCH scheduled by DCI format 1_0 is arranged may be the same as the downlink component carrier on which the PDCCH including the DCI format 1_0 is arranged. Based on detecting DCI format 1_0 in a certain downlink component carrier, the terminal device 1 may arrange the PDSCH scheduled by the DCI format 1_0 in the downlink component carrier. It may be recognized that the carrier may be placed.

[0155] DCI format 1_0 may not include the BWP field. The DCI format 1_0 may be a DCI format for scheduling the PDSCH without changing the active downlink BWP. The terminal device 1 may recognize that it will receive the PDSCH without switching the active downlink BWP based on detecting the DCI format 1_0 used for scheduling the PDSCH.

[0156] DCI format 1_1 is used at least for scheduling PDSCHs allocated to a certain cell. DCI format 1_1 includes at least some or all of 4A to 4I. It also includes the following: 4A) DCI Format Specific Fields 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 indication field 4H) BWP Field 4I) Career Indicator Field

[0157] The DCI format specific field included in DCI format 1_1 may indicate 1.

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

[0160] The MCS field included in DCI format 1_1 specifies the modulation scheme for PDSCH, and , may be used to indicate at least one or both of the target coding rates.

[0161] When DCI format 1_1 includes a PDSCH_HARQ feedback timing indication field, the PDSCH_HARQ feedback timing indication field shall be set from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH. If DCI format 1_1 does not include a PDSCH_HARQ feedback timing indication field, the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH may be specified by a parameter of a higher layer.

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

[0163] The BWP field of DCI format 1_1 is the The DCI format 1_1 may be used to indicate the downlink BWP in which the PUSCH to be scheduled is arranged. That is, the DCI format 1_1 may involve a change of the active downlink BWP. The terminal device 1 may recognize the downlink BWP in which the PUSCH is arranged based on detecting the DCI format 1_1 used for scheduling the PDSCH.

[0164] DCI format 1_1, which does not include the BWP field, is used to change the active downlink BWP. The terminal device 1 may use a DCI format 1_1 that is used for scheduling the PDSCH and that is not accompanied by a BWP frame. The active downstream link is determined based on detecting DCI format 1_1 that does not include the It may be possible to recognize that the PDSCH is received without switching the link BWP.

[0165] DCI format 1_1 includes a BWP field, but terminal device 1 does not If the terminal device 1 does not support the BWP switching function by 1_1, the BWP field may be ignored by the terminal device 1. In other words, the terminal device 1 that does not support the BWP switching function , DCI format 1_1 used for PDSCH scheduling and BWP format Based on detecting the DCI format 1_1 including the field, the terminal device 1 may recognize that it will receive the PDSCH without switching the active downlink BWP. If the terminal device 1 supports the BWP switching function, it may report that "the terminal device 1 supports the BWP switching function" in the RRC layer capability information reporting procedure.

[0166] If DCI format 1_1 includes a carrier indicator field, The rear indicator field indicates the downlink component carrier on which the PDSCH is located. DCI Format 1_1 may be used to indicate a carrier indicator. If the field is not included, the downlink component carrier on which the PDSCH is allocated is A PDCCH including DCI format 1_1 used for scheduling the PDSCH is arranged. When the number of downlink component carriers configured in the terminal device 1 in a certain serving cell group is two or more (when downlink carrier aggregation is operated in a certain serving cell group), the scheduling of the PDSCH allocated to the certain serving cell group may be the same as the downlink component carrier configured in the certain serving cell group. The carrier indicator field included in DCI format 1_1 used for The number of bits may be 1 or more (for example, 3 bits). When the number of downlink component carriers configured in the terminal device 1 in a certain serving cell group is 1 (when downlink carrier aggregation is not operated in a certain serving cell group), the scheduling of the PDSCH arranged in the certain serving cell group Carrier indicator field included in DCI format 1_1 used for The number of bits may be 0 (or the carrier index is not included in the DCI format 1_1 used for scheduling the PDSCH allocated to the certain serving cell group). (The field may not be included.)

[0167] The PDSCH may be transmitted to transmit a transport block. The PDSCH may be used to transmit a transport block delivered by the DL-SCH. The PDSCH may be used to transmit a transport block. The transport block may be placed on the PDSCH. The transport block corresponding to the DL-SCH is placed on the PDSCH. The base station device 3 may transmit the PDSCH, and the terminal device 1 may receive the PDSCH.

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

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

[0170] FIG. 7 is a diagram showing an example of the configuration of an SS / PBCH block according to one aspect of this embodiment. In FIG. 7, the horizontal axis is the time axis (OFDM symbol index l sym ), where the vertical axis represents the frequency domain. Block 700 represents a set of resource elements for the PSS. Block 720 shows the set of resource elements for SSS. Blocks 710, 711, 712, and 713 indicate a set of resource elements for the PBCH and DMRS for the PBCH (DMRS associated with the PBCH, DMRS included in the PBCH, and DMRS corresponding to the PBCH).

[0171] As shown in Figure 7, the SS / PBCH block includes a PSS, SSS, and PBCH. The SS / PBCH block includes four consecutive OFDM symbols. The SS / PBCH block includes 240 subcarriers. The PSS is the 57th to 183rd subcarriers in the first OFDM symbol. The SSS is located in the 57th to 183rd subcarriers in the third OFDM symbol. The PBCH is allocated to the 1st subcarrier of the first OFDM symbol. Zeros may be set to the 1st to 56th subcarriers of the first OFDM symbol. Zeros may be set to the 184th to 240th subcarriers of the first OFDM symbol. Zeros may be set to the 49th to 56th subcarriers of the third OFDM symbol. Zeros may be set to the 184th to 192nd subcarriers of the third OFDM symbol. The PBCH is allocated to the 1st to 240th subcarriers of the second OFDM symbol, which are subcarriers where DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 48th subcarriers of the third OFDM symbol, which are subcarriers where DMRS for the PBCH is not allocated. The PBCH is allocated to the 193rd to 240th subcarriers of the third OFDM symbol, which are subcarriers where DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 240th subcarriers of the fourth OFDM symbol, which are subcarriers to which the DMRS for the PBCH is not allocated.

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

[0173] The PBCH on which the PBCH symbol is transmitted at a certain antenna port may be estimated by the DMRS for the PBCH that is placed in the slot to which the PBCH is mapped and is included in the SS / PBCH block to which the PBCH belongs.

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

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

[0176] The transmission of the PDSCH and the transmission of the DMRS for the PDSCH are indicated by one DCI format. The PDSCH and the DMRS for the PDSCH may be collectively referred to as the PDSCH. Transmitting the PDSCH may be equivalent to transmitting the PDSCH and the DMRS for the PDSCH.

[0177] The propagation path of a PDSCH may be estimated from the DMRS for that PDSCH. A set of resource elements on which a DMRS symbol is transmitted and the DMRS symbol for the PDSCH are transmitted. When a set of resource elements on which symbols of a PDSCH are transmitted is included in the same precoding resource group (PRG), the PDSCH on which the symbols of the PDSCH are transmitted for an antenna port may be estimated by the DMRS for the PDSCH.

[0178] The antenna port of the DMRS for the PDCCH (DMRS related to the PDCCH, DMRS included in the PDCCH, DMRS corresponding to the PDCCH) may be the same as the antenna port for the PDCCH.

[0179] The PDCCH may be estimated from the DMRS for the PDCCH, i.e., the propagation path of the PDCCH may be estimated from the DMRS for the PDCCH. a set of resource elements and a resource on which the DMRS symbols for the PDCCH are transmitted; If the same precoder is applied (or is assumed to be applied) to a set of elements, the symbols of the PDCCH on a certain antenna port are transmitted. The PDCCH to be used may be estimated by the DMRS for the PDCCH.

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

[0181] The BCH of the transport layer is mapped to the PBCH of the physical layer. The transport blocks that pass through the BCH are delivered to the PBCH of the physical layer. The UL-SCH of the transport layer is mapped to the PUSCH of the physical layer. That is, the transport block carried by the UL-SCH of the transport layer is delivered to the PUSCH of the physical layer. The DL-SCH of the transport layer is mapped to the PDSCH of the physical layer. The transport blocks that pass through are delivered to the PDSCH of the physical layer.

[0182] One UL-SCH and one DL-SCH may be provided for each serving cell. The BCH may be provided for the PCell. The BCH does not necessarily have to be provided for the PSCell or SCell.

[0183] In the MAC layer, HARQ (Hybrid Automatic Repeat reQuest) control is performed for 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 MIB, Or, it is a channel of the RRC layer used to transmit system information. (Common Control CHannel) transmits common RRC messages to multiple terminal devices 1. Here, the CCCH may be used for, for example, a terminal device that is not RRC connected. 1. In addition, the DCCH (Dedicated Control CHannel) may be used for the terminal device. 1, where DCCH may be used to transmit RRC messages dedicated to may be used, for example, for a terminal device 1 that is in an RRC connection.

[0185] An upper layer parameter common to a plurality of terminal devices 1 is also referred to as a common upper layer parameter. Here, the common upper layer parameter may be defined as a parameter specific to a serving cell. Here, the parameter specific to a serving cell is a parameter common to terminal devices (for example, terminal devices 1-A, B, C) in which the serving cell is set. may be.

[0186] For example, the common upper layer parameters may be included in the RRC messages delivered on the BCCH. For example, common upper layer parameters may be included in RRC messages delivered on the DCCH. .

[0187] Among certain upper layer parameters, upper layer parameters different from common upper layer parameters are also referred to as dedicated upper layer parameters. Here, the dedicated upper layer parameters can provide dedicated RRC parameters to the terminal device 1-A in which the serving cell is configured. In other words, the dedicated RRC parameters are upper layer parameters that can provide unique settings for each of the terminal devices 1-A, 1-B, and 1-C.

[0188] The BCCH of the logical channel is mapped to the BCH of the transport layer or the DL-SCH. For example, a transport block containing MIB information is delivered to the BCH of the transport layer. Also, a transport block containing non-MIB system information is delivered to the transport layer. The CCCH is delivered to the DL-SCH of the transport layer. The CCCH is also mapped to the DL-SCH or UL-SCH. Therefore, a transport block mapped to a CCCH is delivered to either the DL-SCH or the UL-SCH, and a DCCH is mapped to either the DL-SCH or the UL-SCH, i.e., a transport block mapped to a DCCH is delivered to either the DL-SCH or the UL-SCH.

[0189] The RRC message includes one or more parameters managed in the RRC layer. Here, the parameters managed in the RRC layer are also referred to as RRC parameters. For example, The message may include an MIB. The RRC message may also include system information. The RRC message may also include a message corresponding to a CCCH. The RRC message may also include a message corresponding to a DCCH. An RRC message including a message corresponding to a DCCH is also referred to as a dedicated RRC message.

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

[0191] The procedure performed by the terminal device 1 includes at least some or all of the following steps 5A to 5C. 5A) Cell Search 5B) Random Access 5C) Data communication

[0192] The cell search is a procedure used by the terminal device 1 to synchronize with a certain cell in the time domain and the frequency domain and detect a physical cell identity. That is, the terminal device 1 may perform the cell search to synchronize with a certain cell in the time domain and the frequency domain and detect a physical cell ID.

[0193] The sequence of PSSs is based at least on a physical cell ID. The sequence of SSSs is based at least on a physical cell ID.

[0194] The SS / PBCH block candidates indicate resources on which transmission of the SS / PBCH block is permitted (possibly, reserved, configured, defined, possible).

[0195] The set of SS / PBCH block candidates in a half radio frame is also called the SS burst set. The SS burst set is a set of candidates for the transmission window. It is also called the SS transmission window, the DRS transmission window, or the Discovery Reference Signal transmission window. The SS burst set is a general term that includes at least the first SS burst set and the second SS burst set.

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

[0197] Random access is a procedure that includes at least some or all of message 1, message 2, message 3, and message 4.

[0198] Message 1 is a procedure for transmitting a PRACH by the terminal device 1. The terminal device 1 A PRACH is transmitted in one PRACH opportunity selected from one or more PRACH opportunities based at least on an index of a SS / PBCH block candidate detected based on a cell search. Each PRACH opportunity is defined based on at least time and frequency domain resources. can be.

[0199] The terminal device 1 transmits one random access preamble selected from the PRACH opportunities corresponding to the index of the SS / PBCH block candidate in which the SS / PBCH block is detected. .

[0200] Message 2 is a DCI frame with a CRC (Cyclic Redundancy Check) scrambled by the terminal device 1 with an RA-RNTI (Random Access - Radio Network Temporary Identifier). The terminal device 1 detects a control resource set provided based on the MIB included in the PBCH included in the SS / PBCH block detected based on the cell search. The DCI format is used in the resource indicated based on the search area set setting. Message 2 is also called a random access response. It is called.

[0201] Message 3 is contained in DCI format 1_0 detected by the Message 2 procedure. The PUSCH is transmitted by the random access response grant. Here, the random access response grant grant) is indicated by the MAC CE included in the PDSCH scheduled by the DCI format 1_0.

[0202] The PUSCH scheduled based on the random access response grant is Message 3 PUSCH contains a contention resolution identifier MAC CE. The contention resolution identifier MAC CE is used to identify the contention. Contains the conflict resolution ID.

[0203] Message 3 PUSCH retransmissions are scheduled with DCI format 0_0 with CRC scrambled based on TC-RNTI (Temporary Cell - Radio Network Temporary Identifier).

[0204] Message 4 is a procedure for 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 performs scheduling based on the DCI format 1_0. The PDSCH may include a collision resolution ID.

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

[0206] In data communication, the terminal device 1 attempts to detect the PDCCH in the resources specified based on the control resource set and the search space set (monitors the PDCCH, detects the PDCCH, etc.). monitor).

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

[0208] A set of resource blocks constituting the control resource set may be indicated by a higher layer parameter, and the number of OFDM symbols constituting the control resource set may be indicated by a higher layer parameter.

[0209] The terminal device 1 attempts to detect the PDCCH in the search space set. Attempting to detect a PDCCH in the search space set may be attempting to detect a PDCCH candidate in the search space set, or attempting to detect a DCI format in the search space set. Alternatively, the PDCCH may be detected in the control resource set. Alternatively, the PDCCH may be detected in the control resource set. , it may be to attempt to detect the DCI format in the control resource set.

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

[0211] The Type 0 PDCCH common search space set is used as the common search space set with index 0. The Type 0 PDCCH common search space set may include the common search space with index 0. It may be a set.

[0212] The CSS set is a collective 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 a UE-specific PDCCH search space set. It is also called.

[0213] A search space set is associated with (contained in, corresponds to) a control resource set. The index of the control resource set associated with the search space set may be indicated by a higher layer parameter.

[0214] For a given search area set, some or all of 6A to 6C may be indicated by at least higher layer parameters. 6A) PDCCH monitoring periodicity 6B) PDCCH monitoring pattern within a slot 6C) PDCCH monitoring offset

[0215] A monitoring occasion for a certain set of search areas is defined as The monitoring opportunity for a search space set may correspond to an OFDM symbol in which the first OFDM symbol of the associated control resource set is located. The monitoring opportunity for a search space set may correspond to resources of a control resource set associated with the search space set starting from the first OFDM symbol of the control resource set. The monitoring opportunity for the search space set is based on at least some or all of the PDCCH monitoring interval, the PDCCH monitoring pattern within the slot, and the PDCCH monitoring offset.

[0216] 8 is a diagram illustrating an example of a monitoring opportunity for a search area set according to one aspect of the present embodiment. In FIG. 8, search area set 91 and search area set 92 are set in primary cell 301, search area set 93 is set in secondary cell 302, and search area set 94 is set in secondary cell 303.

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

[0218] The monitoring interval of the search area set 91 is set to 1 slot, and the monitoring interval of the search area set 91 is set to 1 slot. The offset is set to 0 slots, and the monitoring pattern of the search area set 91 is [1,0 ,0,0,0,0,0,1,0,0,0,0,0,0]. The monitoring opportunities for search area set 91 correspond to the first OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each slot.

[0219] The monitoring interval of the search area set 92 is set to 2 slots, the monitoring offset of the search area set 92 is set to 0 slots, and the monitoring pattern of the search area set 92 is [1,0 ,0,0,0,0,0,0,0,0,0,0,0,0,0]. The monitoring opportunity for search area set 92 corresponds to the first OFDM symbol (OFDM symbol #0) in each of the even slots.

[0220] The monitoring interval of the search area set 93 is set to 2 slots, and the monitoring interval of the search area set 93 is set to 2 slots. The offset is set to 0 slots, and the monitoring pattern of the search area set 93 is [0,0 ,0,0,0,0,0,1,0,0,0,0,0,0]. The monitoring opportunity for search area set 93 corresponds to the eighth OFDM symbol (OFDM symbol #7) in each of the even slots.

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

[0222] The Type 0 PDCCH common search space set may be used at least for DCI formats with a Cyclic Redundancy Check (CRC) sequence scrambled by a System Information-Radio Network Temporary Identifier (SI-RNTI).

[0223] The Type 0a PDCCH common search space set is the SI-RNTI (System Information-Radio Network Time Interference (SNTI)). CRC (Cyclic Redundancy Check) scrambled by a Temporary Identifier It may be used at least for DCI formats involving sequences.

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

[0225] A Type 2 PDCCH common search space set may be used for a DCI format with a CRC sequence scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI).

[0226] The Type 3 PDCCH common search space set is used for DCI formats with CRC sequences scrambled by the Cell-Radio Network Temporary Identifier (C-RNTI). Good too.

[0227] The UE dedicated PDCCH search space set may be used at least for DCI formats with CRC sequences scrambled by the C-RNTI.

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

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

[0230] In the configured grant, PUSCH is scheduled. The uplink grant to be transmitted is set for each transmission period of the PUSCH. When PUSCH is scheduled by the format, some or all of the information indicated by the uplink DCI format may be indicated by the uplink grant configured in the case of configured scheduling.

[0231] The PUSCH transmission may correspond to a configured scheduling type 1 or a configured scheduling type 2. The PUSCH transmission of the configured scheduling type 1 may be either scheduling type 1 or configured scheduling type 2. The PUSCH transmission of the configured scheduling type 1 may be configured semi-statically. For example, the PUSCH transmission of the configured scheduling type 1 may be operated in response to the reception of certain higher layer parameters. For example, configuredGrantConfig may include rrc-ConfiguredUplinkGrant. The PUSCH transmission is It may be operated without detection.

[0232] The configured scheduling type 2 PUSCH transmission is semi-persistently For example, it may be scheduled by an uplink grant. An uplink grant may be an activation DCI (or For example, after receiving certain higher layer parameters, the configured scheduling type 2 PUSCH transmission may be scheduled by a certain uplink grant. The certain higher layer parameters may be configuredGrantConfig. For example, configuredGrantConfig may not include rrc-ConfiguredUplinkGrant.

[0233] System frame number (SFN)n f is given to the radio frame The system frame number may be a number assigned to a radio frame and / or an index for a radio frame. The system frame number may be composed of 10 bits. At least a part of the system frame number may be notified in the MIB. For example, 6 bits (e.g., 6 most significant bits) of the 10-bit system frame number may be notified in the MIB. At least a part of the system frame number may be determined based on the PBCH for transmitting the MIB. For example, Four bits (eg, the four least significant bits) of the stem frame number may be conveyed in the PBCH transport block as part of the channel coding.

[0234] The PDCCH-Config may be a dedicated higher layer parameter. In the PDCCH-config, multiple CORESETs (for example, up to three) may be configured. In one CORESET, a CORESET ID may be configured. One CORESET pool index may be set in one CORESET.

[0235] PDSCH-Config may be a dedicated higher layer parameter. You may set parameters for this purpose.

[0236] Multiple PDCCH candidates (PDCCH candidate(s)) are searched for and configured by higher layer parameters. When a search area set is associated with the PDCCH candidate, one PDCCH candidate is used. The upper layer parameter may be a PDCCH candidate that starts earlier among the PDCCH candidates. The upper layer parameter may be searchSpaceLinking.

[0237] Multiple TRPs (Transmission Reception Points or Transmit / Receive Points) are used. The base station device 3 may be configured with multiple TRPs (Multi-TRP). The terminal device 1 may be scheduled by two TRPs in one serving cell. In Multi-TRP, one of the operation modes of single-DCI and multi-DCI may be used. In Multi-TRP, uplink control may be completed in the MAC layer and the physical layer. In Multi-TRP, MAC Downlink control may be completed at the layer and the physical layer. In the Single-DCI mode, the terminal device 1 may be scheduled by the same DCI for two TRPs. In the Multi-DCI mode, the terminal device 1 may be scheduled by independent DCI from each TRP. In the Multi-DCI mode, each TRP in the Multi-TRP may be identified by TRP information. That is, one TRP in the Multi-TRP may be identified by one TRP information. The TRP information may be used to select one TRP. Also, one control resource set (CORESET) may be associated with an index of a CORESET resource pool. The terminal device 1 may transmit a PUSCH based on the index of the CORESET resource pool. The terminal device 1 may transmit a PDCCH and a PDSCH based on the index of the CORESET resource pool. The TRP information is a CORESET pool index. The TRP information may be provided by a TRP indication field.

[0238] The terminal device 1 may have the upper layer parameter TCI-State set. For example, the terminal device 1 One list may be configured in the higher layer parameter PDSCH-Config. One list may include up to M higher layer parameters TCI-State. One list may be a list of up to M higher layer parameters TCI-State. One list may be configured in the terminal device 1 to decode (receive) the PDSCH according to the PDCCH with DCI. M may depend on the terminal capability. For example, M may depend on the terminal capability maxNumberConfiguredTCIStatePerCC. TCI-State may also be referred to as a TCI state.

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

[0240] The QCL relationship is either the upper layer parameter qcl-Type1 or the upper layer parameter qcl-Type2, or both. For example, the QCL relationship may be set by the higher layer parameter qcl-Type1 for the first DL RS and the higher layer parameter qcl-Type2 for the second DL RS. The first downlink reference signal and the second downlink reference signal may be set by one or both of the first downlink reference signal and the second downlink reference signal. If the second downlink reference signal is different, the QCL type of qcl-Type1 may not be the same as the QCL type of qcl-Type2. The QCL type corresponding to each downlink reference signal may be given by the higher layer parameter qcl-Type in the higher layer parameter QCL-Info. The QCL type may be any of type A, type B, type C, and type D.

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

[0242] The terminal device 1 may be configured with the upper layer parameter UL-TCIState. One list may be configured in the higher layer parameter BWP-UplinkDedicated. A list may contain up to 64 upper layer parameter UL-TCIState. Each UL-TCIState (or or UL-TCIState configuration) may contain parameters for configuring one reference signal. For example, each UL-TCIState may include one parameter for configuring one reference signal for determining uplink transmit spatial filters for some or all of the PUSCH, PUCCH, and SRS. One list may be an upper layer parameter ul-TCI-StateList. The UL-TCIState may also be referred to as the TCI State, the UL TCI State, or the Unified TCI State.

[0243] The UL-TCIState may be an upper layer parameter TCI-UL-State. The UL-TCIState may be set by the upper layer parameter TCI-UL-State. The upper layer parameter TCI-UL-State may associate one or two downlink reference signals with one corresponding QCL type.

[0244] When DLorJointTCIState or UL-TCIState is set, the terminal device 1 may transmit a PUSCH according to a spatial relation. For example, the spatial relation may be a single reference signal. For example, one reference signal may be a reference signal for uplink transmission. One reference signal may be a reference signal set by qcl-Type set to type D in the indicated DLorJointTCIState or the indicated UL-TCIState. The Reference RS in the indicated DLorJointTCIState is a CSI-RS resource in the higher layer parameter NZP-CSI-RS-ResourceSet. The reference RS in the indicated UL-TCIState may be in the NZP-CSI-RS-ResourceSet. The indicated UL-TCIState (Indicated UL-TCIState) may be the TCI state, the UL TCI state, or the unified TCI state indicated by DCI format 1_1 or DCI format 1_2. The indicated DLorJointTCIState (Indicated DLorJointTCIState) may be the TCI state, the DL / Joint TCI state, or the unified TCI state indicated by DCI format 1_1 or DCI format 1_2.

[0245] DLorJointTCIState (e.g., higher layer parameter DLorJointTCIState) and UL-TCIState (e.g., higher layer parameter UL-TCIState) are for one BWP of one component carrier. It may be set when DLorJointTCIState or UL-TCIState is set to 1. If not in one BWP, the terminal device 1 may apply the setting of DLorJointTCIState or the setting of UL-TCIState from the reference BWP.

[0246] The terminal device 1 has both the first upper layer parameter and the second upper layer parameter set. The first higher layer parameter may be any of TCI-State, SpatialRelationInfo, and PUCCH-SpatialRelationInfo. The second higher layer parameter may be any of TCI-State, SpatialRelationInfo, and PUCCH-SpatialRelationInfo. The parameter may be either DLorJointTCIState or UL-TCIState. If TCI-State is set for any of the component carriers in a list, In this case, the second higher layer parameter may not be configured on any component carrier in the same band in the list. This may be set by the parameter simultaneousSpatial-UpdatedList1 or the higher layer parameter simultaneousSpatial-UpdatedList2.

[0247] The terminal device 1 may receive an activation command. The code is used to map up to eight "TCI states and / or pairs of TCI states" to code points in the DCI field 'Transmission Configuration Indication'. A pair of TCI states may be one TCI state for multiple downlink channels / signals (DL TCI states) and one TCI state for multiple uplink channels / signals (UL TCI states). The multiple downlink channels / signals may include PDSCH, PDCCH, and CSI-RS. The multiple uplink channels / signals may be some or all of the PUSCH, PUCCH, The DCI (DCI format) may be one or more For example, the DCI (DCI format) may include a TCI field (Transmission Configuration Indication field).

[0248] If a first set of one or more TCI status IDs is activated in a second set, the first set is applicable for downlink BWP on the indicated component carrier. If a first set of one or more TCI status IDs are activated in the third set, the first set may be applied for downlink BWP and uplink BWP on the indicated component carrier. The first set may be a set of one or both of a component carrier and one or more downlink BWPs. The second set may be a set of some or all of one or more component carriers, one or more downlink BWPs, and one or more uplink BWPs.

[0249] The activation command returns one of the DLorJointTCIState and / or UL-TCIState. When mapping to the TCI code point (code point of the DCI field 'Transmission Configuration Indication'), the terminal device 1 may apply one or both of the indicated DLorJointTCIState (Indicated DLorJointTCIState) and the indicated UL-TCIState (Indicated UL-TCIState).

[0250] The terminal device 1 provides the indicated DLorJointTCIState or the indicated UL-TCIState. The DCI format may be the downlink assignment format 1_1 / 1_2. For example, if DCI format 1_1 / 1_2 does not involve downlink assignment, the terminal device 1 determines that CS-RNTI is used to scramble the CRC for DCI, that RV (Redundancy version) is all 1, and that MCS is all 1. It may be assumed that NDI is 0, that all 0s are set for FDRA type 0, and that all 1s are set for FDRA type 1.

[0251] The terminal device 1 may receive higher layer configurations. After the terminal device 1 receives the first configuration of multiple DLorJoint-TCIStates, and one indicated TCI state is applied from the configured TCI states, Before the TCI state is specified, the terminal device 1 may assume that the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS to which the specified TCI state is applied are the SS / PBCH block and the QCL.

[0252] After the terminal device 1 receives the initial setting of multiple DLorJoint-TCIStates or multiple UL-TCIStates, and before applying one of the designated TCI states from the set TCI states, The terminal device 1 then transmits the first TCI state for the PUSCH, PUCCH, and SRS to which the indicated TCI state is applied. It may be assumed that one uplink transmit spatial filter (UL TX spatial filter) is the same as the second uplink transmit spatial filter, which is the uplink transmit spatial filter for PUSCH transmission scheduled by a random access response grant in an initial access procedure. It may also be a

[0253] After the terminal device 1 receives multiple DLorJoint-TCIState settings and before one "indicated TCI state" is applied from the set TCI states, the terminal device 1 applies the indicative TCI state. The DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS are transmitted in the SS / PBCH block or the CSI-RS link. The source and QCL may be the SS / PBCH block or the CSI-RS resource. For example, the SS / PBCH block or the CSI-RS resource may be identified in a random access procedure initiated by reconfiguration with sync. For example, the terminal device 1 may receive the DLorJoint-TCIState configuration as part of the reconfiguration with sync.

[0254] After the terminal device 1 receives multiple DLorJoint-TCIState or multiple UL-TCIState settings, and before one "indicated TCI state" is applied from the set TCI states, The first uplink transmit spatial filter for the PUSCH, PUCCH, and SRS that applies the indicated TCI state may be assumed to be the same as the second uplink transmit spatial filter, which may be the uplink transmit spatial filter for the PUSCH transmission scheduled by a random access response grant in a random access procedure initiated by a synchronized reconfiguration.

[0255] DLorJoint-TCIState may be used as the "indicated TCI state". For example, The device 1 may obtain a QCL assumption (QCL relation, QCL) for the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS to which the "indicated TCI state" applies from the "configured TCI state." The "indicated TCI state" may be applied to the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS. The "indicated TCI state" may apply to the DMRS of the PDSCH, the DMRS of the PDCCH, the CSI-RS, the PUSCH, the PUCCH, and the SRS.

[0256] UL-TCIState may be used as the "indicated TCI state". For example, the terminal device 1 For the PUSCH, PUCCH, and SRS to which the "indicated TCI state" applies, the uplink transmit spatial filter may be determined from the "set TCI state."

[0257] When the terminal device 1 transmits a first OFDM symbol, and the first "indicated TCI state" is different from the second "indicated TCI state", the first "indicated TCI state" may be applied from the first slot. The first OFDM symbol is the first slot of the PUCCH with HARQ-ACK information. The first OFDM symbol may be a PUSCH symbol with HARQ-ACK information. The HARQ-ACK information may be HARQ-ACK information corresponding to a DCI carrying a TCI state indication without a downlink assignment. The HARQ-ACK information may be HARQ-ACK information corresponding to a PDSCH scheduled by a DCI carrying a TCI state indication. The second indicated TCI status may be HARQ-ACK information corresponding to the first indicated TCI status. The first slot may be indicated before the TCI state. BeamAppTime may be set by a higher layer parameter. The BeamAppTime may be determined by the terminal capabilities. The second OFDM symbol is The indicated TCI state may be an indicated DLorJointTCIState or an indicated UL-TCIState.

[0258] If the higher layer parameter PDCCH-Config includes two different values ​​of the CORESET pool index (CORESET Pool Index or coresetPoolIndex), the terminal device 1 may receive an activation command for a CORESET associated with each CORESET pool index. The code may be used to map up to eight TCI states to code points in the DCI field 'Transmission Configuration Indication'. If a set of TCI state IDs is activated for one CORESET pool index, then the code points for that CORESET pool index are used. The corresponding "activated TCI state" may be associated with one physical cell ID, and the "activated TCI state" corresponding to a CORESET pool index different from the one physical cell ID may be associated with a physical cell ID different from the one physical cell ID. , may be received as MAC CE. One or more CORESETs may be set in one BWP. One CORESET corresponds to a CORESET pool index of '0' or '1'. That's fine.

[0259] One code point in the DCI field 'Transmission Configuration Indication' is , may include four TCI states. For example, one of the four TCI states may be a Joint TCI state. One of the four TCI states may be a DL TCI state. One of them may be the UL TCI state. One codepoint of the DCI field 'Transmission Configuration Indication' may contain two "TCI state pairs". TCI state The pair may be a pair of a DL TCI state and a UL TCI state. The Activation Command maps up to eight combinations of up to four TCI states to code points in the DCI field 'Transmission Configuration Indication'. The activation command may be used to map up to eight combinations of one or two "TCI state pairs" to the code map of the DCI field 'Transmission Configuration Indication'. The terminal device 1 may not expect to receive more than eight TCI states in the activation command. The terminal device 1 may not expect to receive more than eight "TCI state pairs" in the activation command.

[0260] When the terminal device 1 transmits the first PUCCH in the first slot, the TCI state and the code point The mapping with the first PUCCH may be applied from the second slot. The first PUCCH may be accompanied by HARQ-ACK information. The first PUCCH may be transmitted corresponding to the first PDSCH. The first PDSCH may carry an activation command.

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

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

[0263] If the first DCI format schedules a PDSCH and the time offset is greater than or equal to a threshold, the TCI state or QCL assumption for the PDSCH may be the same as the TCI state or QCL assumption applied for the CORESET used for the PDCCH to determine the PDSCH antenna port QCL. The time offset may be the time offset between reception of the DL DCI and the corresponding PDSCH. The threshold may be timeDurationForQCL. First DCI The format may not include a TCI field.

[0264] If the first higher layer parameter and the second higher layer parameter are configured, and if the time offset is greater than or equal to the threshold, and if DCI scheduling without TCI status is supported, the TCI status or QCL assumption for PDSCH shall be used for reception of DL DCI. The TCI conditions applied to the CORESET or QCL assumptions may be the same. The number of activated TCI states in the CORESET may be independent of the number of activated TCI states in the CORESET. If dynamic switching between SFN PDSCH and non-SFN PDSCH is not supported, the terminal device 1 may be activated in a CORESET including two TCI states. If not supported, two "indicated TCI states" may be applied to the PDSCH. For example, if dynamic switching between SFN and non-SFN PDSCH is not supported, one The "indicated TCI state" may not be expected to apply to the PDSCH. DL DCI may be received in the active BWP of the serving cell. DL DCI is The SFN PDSCH may be DCI for the downlink physical channel (SFN). The first upper layer parameter may be sfnSchemePdcch. The second higher layer parameter may be sfnSchemePdsch. The time offset may be a time offset between reception of DL DCI and the corresponding PDSCH. The threshold may be timeDurationForQCL. Setting sfnSchemePdcch may indicate that a Single Frequency Network (SFN) is applied to the PDCCH. Applying the SFN method may indicate that the same DMRS port is transmitted from different panels at the same time. One beam may correspond to one panel. One TSI state may correspond to one panel.

[0265] If the first upper layer parameter and the second upper layer parameter are not configured, and the DCI frame is If scheduling is done in format 1_1 / 1_2 and the time offset is within the threshold If the value is greater than or equal to the first upper layer parameter, the terminal device 1 may expect the TCI field to be present. The first upper layer parameter may be sfnSchemePdcch. The second upper layer parameter may be sfnSchemePdsch.

[0266] If PDSCH is scheduled in DCI format 1_0 / 1_1 / 1_2, and the first If the upper layer parameter is set, and the second upper layer parameter is not set, and the activation command contains a TCI codepoint with two TCI states (in the TCI field) If there is no code point in the TCI state for the PDSCH and the time offset is greater than or equal to the threshold, and the CORESET schedules a PDSCH indicated by two TCI states, The state or QCL assumption is the first TCI state applied to the CORESET used for the PDCCH. , or QCL assumption. The first upper layer parameter is 'sfnSchemeA' set The second upper layer parameter may be sfnSchemePdsch.

[0267] If the time offset is equal to or less than the threshold, and at least one "TCI state to be set" includes a QCL type of type D, then any of actions 1, 2, 3, 4, and 5 may be performed. The time offset is the time between the reception of the DL DCI and the corresponding PDSCH. The threshold may be timeDurationForQCL.

[0268] In operation 1, the DMRS port of the first PDSCH receives a first reference signal with respect to a first QCL parameter. The first QCL parameter may be a search space (search space set) with the smallest CORESET ID (controlResourceSetId) among one or more CORESETs in the active BWP. The second ...

[0269] In operation 2, when the first upper layer parameter and the second upper layer parameter are configured, the DMRS port of the second PDSCH associated with the first value of the CORESET pool index may be a reference signal and a QCL for the second QCL parameter. The second QCL parameter may be used for the PDCCH QCL indication of the CORESET. The CORESET may be configured with the same CORESET pool index as the PDCCH that schedules the second PDSCH. The CORESET may be configured with the smallest CORESET The CORESET is the CORESET in the most recent slot. The first upper layer parameter is enableDefaultTCI-StatePerCoresetPoolIndex. The second higher layer parameter may be a PDCCH-Config that includes two different CORESET Pool Index (coresetPoolIndex) values.

[0270] In action 3, if a third higher layer parameter is set and at least one TCI code is present, If the end point indicates two TCI states, the DMRS port of the PDSCH (or PDSCH transmission opportunity) may be a reference signal and a QCL for the third QCL parameter. may be associated with a TCI state corresponding to the smallest codepoint of a plurality of TCI codepoints, each of which may contain two different TCI states. Furthermore, if the fourth higher layer parameter is configured and the time offset is less than or equal to a threshold, a mapping of TCI states to PDSCH transmission opportunities may be determined. For example, an "indicated TCI state" with the TCI state corresponding to the smallest codepoint among multiple TCI codepoints may be applied to the PDSCH transmission opportunity. One TCI codepoint may indicate up to four TCI states. The third higher layer parameter may be enableTwoDefaultTCI-States. The fourth higher layer parameter may be repetitionScheme set to 'tdmSchemeA'. The fourth higher layer parameter may be repetitionNumber. Configuring repetitionScheme for PDSCH may mean that a TDM (Time Division Multiplexing) scheme is applied for PDSCH. The time offset may be determined based on the time between the reception of DL DCI and the first It may be a time offset from the first PDSCH transmission opportunity.

[0271] In operation 4, if the fifth upper layer parameter is not set and the sixth upper layer parameter is set, If the TCI codepoint with the lowest ID is set, and there is no TCI codepoint with multiple TCI states in the Activate command, and the CORESET with the lowest ID is indicated with multiple (e.g., two) TCI states, If so, the DMRS port of the PDSCH is the reference signal and QCL for the fourth QCL parameter. The fourth QCL parameter may be associated with a first TCI state of multiple (e.g., two) TCI states indicated for CORESET. CORESET may be the CORESET in the latest slot. The fifth upper layer parameter may be sfnSchemePdsch. The sixth upper layer parameter may be sfnSchemePdcch to which 'sfnSchemeA' is set.

[0272] In operation 5, the “configured TCI” for the serving cell of the scheduled PDSCH is If the "State" is not set with a QCL type of type D, the terminal device 1 may obtain the QCL assumption from the "Indicated TCI State".

[0273] If the PDCCH carrying the scheduling DCI is received on a first component carrier, and if the PDSCH scheduled by the scheduling DCI is on a second component carrier, the threshold is set to the subcarrier of the scheduled PDSCH. The additional time may be determined based on the subcarrier spacing (subcarrier spacing setting) of the PDCCH and the PDSCH, and the additional time may be added to the threshold. If a PDCCH carrying a scheduling DCI is received on a first component carrier, and if a PDSCH scheduled by the scheduling DCI is on a second component carrier, and if a first higher layer parameter is configured, and if a time offset is equal to or less than a threshold, the terminal device 1 takes a QCL assumption for the scheduled PDSCH from an "activated TCI state" or an "indicated TCI state". The "activated TCI state" or "indicated TCI state" may be associated with the smallest ID and may apply to the PDSCH in the active BWP of the serving cell to be scheduled. The scheduling DCI may be assigned to a downlink physical channel or an uplink physical channel. It may be DCI that schedules the link physical channel. The parameter may be enableDefaultBeamForCCS.

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

[0275] If a PDCCH reception includes two PDCCHs from two associated search space sets, and when determining the time offset, a PDCCH candidate may be used. The time offset is the time offset between the reception of the DL DCI and the corresponding PDSCH. The PDCCH candidate may be a PDCCH candidate that terminates later in time. If the PDCCH reception includes two PDCCH candidates from the corresponding search space set, the first higher layer parameter In the data configuration, the terminal device 1 may expect the same configuration in the first CORESET and the second CORESET associated with 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 one PDCCH reception including two PDCCHs (PDCCH candidates) from two associated search space sets. good.

[0276] The Periodic CSI-RS resources in the NZP-CSI-RS-ResourceSet are When configured with a layer parameter, the TCI state indicates one of several QCL types. The multiple QCL types may include type C for the SS / PBCH block. The higher layer parameters may be trs-Info. The first higher layer parameter may be an antenna for all Non Zero Power CSI-RS (NZP-CSI-RS) resources in the CSI-RS resource set. The port may be the same.

[0277] In Periodic CSI-RS and Semi-persistent CSI-RS, The indicated TCI state (eg, indicated DLorJointTCIState) may not apply.

[0278] For CSI-RS resources in an NZP-CSI-RS resource set (NZP-CSI-RS-ResourceSet) without a first upper layer parameter and a second upper layer parameter, the TCI state may indicate one of a plurality of QCL types. The plurality of QCL types may include type A for the CSI-RS in the NZP-CSI-RS resource set with the first upper layer parameter. The plurality of QCL types may include type B for the CSI-RS in the NZP-CSI-RS resource set with the first upper layer parameter. The first upper layer parameter may be trs-Info. The second upper layer The parameter may be repetition.

[0279] For CSI-RS resources in the NZP-CSI-RS resource set with the second higher layer parameters, the TCI state may indicate one of multiple QCL types, including type B for CSI-RS in the NZP-CSI-RS resource set with the first higher layer parameters. The multiple QCL types may include type C for SS / PBCH blocks. The upper layer parameter may be repetition.

[0280] The DMRS port of the PDCCH may be a DL-RS (Downlink Reference Signal) and a QCL for multiple (e.g., two) TCI states. For example, when a first higher layer parameter is configured and CORESET is activated in multiple (e.g., two) TCI states, the DMRS port of the PDCCH in CORESET may be a DL-RS and a QCL for multiple (e.g., two) TCI states. The first higher layer parameter may be sfnSchemePdcch. The first higher layer parameter may be sfnSchemePdcch with 'sfnSchemeA' set. The first higher layer parameter may be sfnSchemePdcch with 'sfnSchemeB' set. The second of the two TCI states may be configured with a QCL parameter {dot over (D)}. For example, when the first higher layer parameter is configured and CORESET is activated in one TCI state, the DMRS port of the PDCCH in CORESET may include the DL-RS and QCL-RS of multiple (e.g., two) “indicated TCI states.” For example, when the first upper layer parameter is set, CORESET Regardless of the number of activated TCI states, the DMRS port of the PDCCH in the CORESET may be a DL-RS and a QCL in multiple (e.g., two) "indicated TCI states". The setting may be that the SFN scheme is applied to the PDCCH.

[0281] For DMRS of PDSCH, the TCI state may indicate one QCL type, which may be type A for CSI-RS resources in the NZP-CSI-RS resource set configured with trs-Info. For DMRS of PDCCH, the TCI state may indicate one QCL type. One QCL type may be type A for CSI-RS resources in the NZP-CSI-RS resource set configured with trs-Info.

[0282] If the first higher layer parameter is configured and multiple (e.g., two) TCI states are indicated, the DMRS port of the PDSCH is configured as DL-RS and QCL for multiple (e.g., two) TCI states. Multiple TCI states may be indicated in one code point of the DCI field 'Transmission Configuration Indication' in the DCI scheduling the PDSCH. The first higher layer parameter may be sfnSchemePdsch. The first higher layer parameter may be sfnSchemePdsch to which 'sfnSchemeA' is set. The first higher layer parameter may be sfnSchemePdsch to which 'sfnSchemeB' is set. The second of the two TCI states may not include the QCL parameters {Doppler shift, Doppler spread}. If the first higher layer parameter is set, and multiple (e.g., two) TCI states are indicated, and the TRP indication field indicates a third indication or a fourth indication, In this case, the DMRS port of the PDSCH may be DL-RS and QCL with multiple (e.g., two) TCI states. The first higher layer parameter may be configured to apply the SFN scheme for the PDSCH.

[0283] The terminal device 1 may receive a DMRS for a PDSCH scheduled by a PDCCH with a DCI format. If two TCI states are indicated and the terminal device 1 receives a DMRS for a PDSCH and an SS / PBCH block in the same OFDM symbol, at least one DMRS for the PDSCH may be received. The DMRS ports and SS / PBCH blocks may be QCL of type D ('QCL-TypeD'). When the first higher layer parameter is configured and when multiple PDSCHs overlap in the time-frequency domain due to multiple PDCCHs, different DMRS configurations may not be expected and two TCI states may not indicate DMRS ports within one CDM group. The first higher layer parameter may be a PDCCH-Config that includes two different CORESET pool indices.

[0284] In the downlink, a maximum of 16 or 32 HARQ processes can be used in one serving cell. The number of HARQ processes may be configured by higher layer parameters. If higher layer parameters are not configured, the number of HARQ processes may be 8. stomach.

[0285] In response to detecting a PDCCH with a DCI format, the terminal device 1 may receive (decode) a corresponding PDSCH as indicated by the DCI format.

[0286] The upper layer parameters may contain two different CORESET pool index values. 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 higher 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 a QCL for the first SS / PBCH block with respect to the first QCL parameter. The terminal device 1 may assume that the DMRS port of the second PDSCH is the second SS / PBCH block or the second CSI-RS resource and QCL with respect to the first QCL parameter. The second SS / PBCH block or the second CSI-RS resource may be used for RACH-related purposes. The second PDSCH is scheduled with the RA-RNTI and MSGB-RNTI. The terminal device 1 may schedule the DMRS port of the first PDCCH order and the DMRS port of the third PDSCH according to the first QCL parameter. Alternatively, the third PDSCH may be assumed to be a second CSI-RS resource and a QCL. The third PDSCH may be scheduled with the RA-RNTI for the random access procedure triggered by the first PDCCH order. The first QCL parameters may include some or all of the Doppler shift, Doppler spread, average delay, delay spread, and spatial RX parameters.

[0288] Decoding the PDCCH with CRC scrambled by the CS-RNTI is performed by higher layers. When the PDSCH is set as above, the terminal device 1 may receive the PDSCH without a corresponding PDCCH.

[0289] When the first higher layer parameter is configured, the terminal device 1 may receive multiple PDCCHs. The first higher layer parameter may be PDCCH-Config. The first higher layer parameter may include two different CORESET pool index values. The multiple PDCCHs may include multiple The terminal device 1 may schedule multiple PDSCHs. Multiple PDSCHs may or may not overlap in the time-frequency domain. If multiple PDCCHs are associated with different CORESETs, the terminal device 1 may simultaneously receive multiple PDSCHs. Different CORESETs may have different CORESET pool index (coresetPoolIndex) values.

[0290] CORESET (upper layer parameter ControlResourceSet) is CORESET pool index (upper layer If the parameter coresetPoolIndex is not included, the terminal device 1 may assume that the CORESET is assigned a CORESET pool index of 0.

[0291] A first physical cell ID associated with a first CORESET may be different from a second physical cell ID associated with a second CORESET. For example, the first CORESET and the second CORESET may be associated with different physical cell IDs via an activated TCI state. , may correspond to different CORESET pool indices.

[0292] If repetition is configured for PDSCH, the first higher layer parameter shall be configured. may not be expected. The first higher layer parameter may be a repetitionScheme. Configuring the repetition for the PDSCH may be configuring a repetitionNumber for the PDSCH. Configuring the first higher layer parameter may be applying a frequency division multiplexing (FDM) scheme, a time division multiplexing (TDM) scheme, or a spatial division multiplexing (SDM) scheme.

[0293] If the first higher layer parameter is configured, and multiple (e.g., two) TCI states and one or more If one or more DMRS ports are indicated, then operations 6, 7, and some or all of operation 8 The first higher layer parameter may be repetitionScheme. The repetitionScheme may be set to 'fdmSchemeA', 'fdmSchemeB', or 'tdmSchemeA'. Multiple TCI states may be included in one codepoint of the DCI field 'Transmission Configuration Indication'. One or more DMRS ports may be DMRS ports in one CDM group. One CDM (Code division multiplexing) group may be indicated by the DCI field 'Antenna Port(s)'.

[0294] In operation 6, 'fdmSchemeA' is set in the terminal device 1, and multiple ( For example, if two TCI states are indicated, the terminal device 1 may receive one PDSCH transmission opportunity for one transport block or transmit one PUSCH transmission opportunity in each TCI state. The application of FDM scheme A is indicated by setting 'fdmSchemeA' in the terminal device 1. Each TCI state may be associated with a non-overlapping frequency domain resource allocation.

[0295] In operation 7, 'fdmSchemeB' is set in the terminal device 1, and multiple ( For example, if two TCI states are indicated, the terminal device 1 shall The terminal device 1 may receive two PDSCH transmission opportunities or transmit two PUSCH transmission opportunities for the same block. The application of FDM scheme B is indicated by setting 'fdmSchemeB' in the terminal device 1. Each TCI state may be associated with a first of two PDSCH transmission opportunities. The first PDSCH transmission opportunity may have a non-overlapping frequency domain resource allocation with respect to a second of the two PDSCH transmission opportunities. Each TCI state may be associated with two PUSCH transmission opportunities. The first PUSCH transmission opportunity may be associated with a first PUSCH transmission opportunity of the two PUSCH transmission opportunities, the first PUSCH transmission opportunity being associated with a non-overlapping frequency domain resource allocation with respect to a second PUSCH transmission opportunity of the two PUSCH transmission opportunities. You may have a guess.

[0296] In operation 8, 'tdnSchemeA' is set in the terminal device 1, and multiple ( For example, if two TCI states are indicated, the terminal device 1 shall Each TCI state may receive two PDSCH transmission opportunities for the same TCI block. The first PDSCH transmission opportunity may be associated with a first PDSCH transmission opportunity of the two PDSCH transmission opportunities, the first PDSCH transmission opportunity having a non-overlapping time domain resource allocation with respect to a second PDSCH transmission opportunity of the two PDSCH transmission opportunities. Two PDSCH transmission opportunities may be received within one slot. The application of TDM scheme A may be achieved by setting 'tdmSchemeA' in the terminal device 1. The application of TDM scheme A may be achieved by setting upper layer parameters in which 'tdmSchemeA' is set in the terminal device 1. The meter repetitionScheme may be set.

[0297] The FDM (Frequency division multiplexing) scheme (fdmScheme) is used for PDSCH and PUSCH. FDM scheme A (fdmSchemeA) may be applied to either or both of the PDSCH and the PUSCH. FDM scheme B (fdmSchemeB) may be applied to either or both of the PDSCH and the PUSCH. A time division multiplexing (TDM) scheme may be applied to either or both of the PDSCH and the PUSCH. TDM scheme A (tdmSchemeA) may be applied to one or both of PDSCH and PUSCH. TDM scheme B (tdmSchemeB) may be applied to one or both of PDSCH and PUSCH. fdmScheme may be a general term for fdmSchemeA and fdmSchemeB. tdmScheme may be a general term for tdmSchemeA and tdmSchemeB. SDM (Spatial Division Multiplexing) scheme (sdmScheme) is applied to one or both of PDSCH and PUSCH. Good too.

[0298] If the FDM method is applied and multiple (e.g., two) TCI states are indicated, When a DMRS port in one CDM group is indicated, a first plurality of physical resource blocks may be assigned to a first TCI state, and a second plurality of physical resource blocks may be assigned to a second TCI state. The first plurality of physical resource blocks and the second plurality of physical resource blocks may be assigned to two TCI states. The sum of the physical resource blocks is the physical resource block allocated for the terminal device 1. When the FDM method is applied, and when multiple (e.g., two) TCI states are indicated, and when DMRS ports in one CDM group are indicated, even if Any number of physical resource block groups may be assigned to the first TCI state, with odd numbers A group of physical resource blocks may be assigned to a second TCI state. Both odd and odd physical resource block groups may be within the allocated frequency domain resources. When two TCI states are indicated, and a DMRS port in one CDM group is indicated, In this case, the terminal device 1 may not expect three or more PDSCH transmission layers for each PDSCH transmission opportunity. The fact that an FDM scheme is applied is indicated when 'fdmSchemeA' or 'fdmSchemeB' is set. The upper layer parameter repetitionScheme may be set in the terminal device 1.

[0299] When FDM scheme B is applied, and two TCI states are indicated, and DMRS ports within one CDM group are indicated, each PDSCH transmission opportunity is mapped to a resource element. The resource elements may be determined by the physical resource blocks allocated for the TCI state of the PDSCH transmission opportunity. If two TCI states are indicated, and if a DMRS port in one CDM group is indicated, If transmission Layer 1 is scheduled, then there are a maximum of two PDSCH transmission opportunities. The terminal device 1 may expect the code block. When FDM method B is applied, and when two TCI states are indicated, and when a DMRS port in one CDM group is indicated, And when transmission Layer 2 is scheduled, one code block is sent per PDSCH transmission opportunity. The terminal device 1 may expect a PDSCH transmission opportunity. In the two PDSCH transmission opportunities, the first redundancy version may be applied to the first TCI state, and the second redundancy version may be applied to the second TCI state. The application of FDM scheme B may be the setting in the terminal device 1 of the upper layer parameter repetitionScheme, in which 'fdmSchemeB' is set.

[0300] When FDM scheme B is applied, and two TCI states are indicated, and a DMRS port in one CDM group is indicated, the modulation order of the first PDSCH transmission opportunity may be applied to the second PDSCH transmission opportunity. The first PDSCH transmission opportunity may be associated with the first TCI state. The second PDSCH transmission opportunity may be associated with the second TCI state.

[0301] When FDM scheme B is applied, when two TCI states are indicated, and when a DMRS port in one CDM group is indicated, the terminal device 1 may determine the total number of resource elements for the PDSCH. The total number of allocated physical resource blocks is determined based on the first TCI state. A TBS of a first PDSCH transmission opportunity associated with a first TCI state may be applied to a second PDSCH transmission opportunity associated with a second TCI state.

[0302] When TDM method A is applied, and when two TCI states are indicated, and when a DMRS port in one CDM group is indicated, the terminal device 1 uses one physical resource for the PDSCH. The total number of resource elements in a slot may be determined. The number of OFDM symbols for PDSCH allocation in a slot may correspond to the first TCI state. The TBS of a first PDSCH transmission opportunity associated with the first TCI state may be applied to a second PDSCH transmission opportunity associated with the second TCI state.

[0303] If TDM scheme A is applied and DMRS ports within one CDM group are indicated, the number of PDSCH transmission opportunities is specified in the DCI field 'Transmission Configuration Indication'. Alternatively, two TCI states (first TCI state and second TCI state) may be used. If two TCI states (first and second TCI states) are indicated, the terminal device 1 may be expected to receive two PDSCH transmission opportunities (first and second PDSCH transmission opportunities). Also, if one TCI state is indicated, the terminal device 1 may be expected to receive 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 first redundancy version may be applied to a first TCI state. The second redundancy version may be applied to a second TCI state. This may apply to the TCI state of the DCI field 'Time domain resource assignment'. The indicated PDSCH mapping type may therefore be expected to be mapping type B, and the PDSCH mapping type may be applied to two PDSCH transmission opportunities.

[0304] Repetition may be applied to one or both of the PDSCH and the PUSCH. The application of repetition may be achieved by setting the higher layer parameter repetitionNumber in the higher layer parameter PDSCH-TimeDomainResourceAllocation. When repetition is applied, the terminal device 1 may expect one or more (e.g., two) TCI states to be indicated. One or more TCI states may be included in one codepoint of the DCI field 'Transmission Configuration Indication'. Also, the DCI field 'Time domain resource assignment' indicates an entry including the higher layer parameter repetitionNumber. The DMRS port instructed to the terminal device 1 may be within one CDM group. If multiple TCI states are indicated, the terminal device 1 may receive PDSCH transmission opportunities for the same TB with multiple TCI states across multiple slots. If one TCI state is indicated, the terminal device 1 may receive PDSCH transmission opportunities for the same TB with one TCI state across multiple slots. The PDSCH transmission opportunity may be a multiple slot-level PDSCH transmission opportunity. The repetition may be applied such that the DCI field 'Time domain resource assignment' indicates an entry including the repetitionNumber. The repetitionNumber may be included in the PDSCH-TimeDomainResourceAllocation in the PDSCH-Config.

[0305] If repetition is applied for the PDSCH, the same SLIV may be passed over several consecutive slots. The number of consecutive slots may be determined by repetitionNumber. SLIV determines the starting OFDM symbol and the number of OFDM symbols. You may do so.

[0306] If repetition is applied for PDSCH and two TCI states are indicated by the DCI field 'Transmission Configuration Indication' and one CDM group If a DMRS port in a group is indicated, the same SLIV may be applied to all PDSCH transmission opportunities across multiple consecutive slots, and a first TCI state is applied to the first PDSCH transmission opportunity. Also, if the number of repetitions is 2, the second TCI state may be Also, if the number of repetitions is 3 or more, and if the If cyclic mapping is enabled, the first TCI state is assigned to the first PDSCH transmission opportunity. and a second TCI state is applied to the second PDSCH transmission opportunity, and the same TCI state mapping is applied to the second PDSCH transmission opportunity. The pattern may continue for the remaining PDSCH transmission opportunities. Also, if the number of repetitions is 3 or more and sequential mapping is enabled, the first TCI The state applies to the first and second PDSCH transmission opportunities, and the second TCI state applies to the third and fourth PDSCH transmission opportunities. The number of consecutive slots may be determined by repetitionNumber. The number of repetitions may be the value of repetitionNumber.

[0307] Each PDSCH transmission opportunity may be restricted to two transmission layers. If all PDSCH transmission opportunities are associated with the first TCI state, the redundancy version (indicator for determining the redundancy version) is used. The TCI counts may be calculated by considering only the PDSCH transmission opportunities associated with the first TCI state. good.

[0308] If repetition is applied for PDSCH and one TCI state is indicated by the DCI field 'Transmission Configuration Indication' and one CDM group If a DMRS port within a group is indicated, the same SLIV may be applied to all PDSCH transmission opportunities across multiple consecutive slots, and the same TCI state is applied to all PDSCH transmission opportunities. This may also be done.

[0309] If repetition is not applied by the first DCI format, and if multiple (e.g., two) TCI states are indicated by the first DCI format, and If the first DCI format indicates DMRS ports in two CDM groups and SFN (SFN technique) is not applied, the SDM technique may be applied. For example, the application of the SDM technique may be when condition 1, condition 2, condition 3, and condition 4 are met. Condition 1 may be when repetition is not applied by the first DCI format. Condition 2 may be when multiple (e.g., two) TCI states are indicated by the first DCI format. Condition 3 may be when DMRS ports in two CDM groups are indicated by the first DCI format. Condition 4 may be when SFN (SFN technique) is not applied. If repetition is not applied by the first DCI format and the first DCI format Therefore, if multiple (e.g., two) TCI states are indicated, and if the first DCI format Therefore, if DMRS ports in two CDM groups are indicated and SFN (SFN scheme) is not applied, the terminal device 1 may receive one PDSCH based on the SDM scheme. The fact that repetition is not applied may be that the DCI field 'Time domain resource assignment' in the first DCI format does not indicate an entry including the repetitionNumber. Multiple TCI states may be included in one code point of the DCI field 'Transmission Configuration Indication' in the first DCI format. The DMRS ports are specified in the DCI field 'Antenna Port(s)' in the first DCI format. If an SDM scheme is applied, the first TCI state may correspond to a first CDM group of the first antenna port. The second TCI state may correspond to a second CDM group. You may respond.

[0310] The SFN (Single Frequency Network) method is for one or both of PDSCH and PUSCH. The first higher layer parameter is set when the SFN method is applied. The first upper layer parameter may be sfnSchemePdsch to which 'sfnSchemeA' is set. The first upper layer parameter may be sfnSchemePdsch to which 'sfnSchemeB' is set. The SFN scheme may be a collective term for SFN scheme A and SFN scheme B.

[0311] When the SFN method is applied for the PDSCH and the terminal device 1 reports the first terminal capability, In this case, one or more (for example, two) TCI states may be indicated to the terminal device 1. The first terminal capability may be dynamic SFN. The first terminal capability may be a dynamic SFN. When the SFN method is applied and the terminal device 1 does not report the first terminal capability, the terminal device 1 may not expect one TCI state to be indicated in the TCI codepoint by the MAC CE, and multiple (e.g., two) TCI states may be indicated.

[0312] A single frequency network (SFN) technique may be applied to the PDCCH. The first upper layer parameter may be configured to apply the SFN technique. The upper layer parameter may be sfnSchemePdcch. The first upper layer parameter may be sfnSchemePdcch to which 'sfnSchemeA' is set. The first upper layer parameter may be sfnSchemePdcch to which 'sfnSchemeB' is set. The SFN scheme may be a collective term for SFN scheme A and SFN scheme B.

[0313] If the SFN scheme is applied for PDSCH and PDCCH, sfnSchemePdsch and sfnSchemePdcch are used. The same scheme (e.g., 'sfnSchemeA' or 'sfnSchemeB') may be expected to be set. When an SFN scheme is applied for PDSCH, sfnSchemePdsch may be set. When an SFN scheme is applied for PDCCH, sfnSchemePdcch may be set.

[0314] When SFN scheme B is applied for the PDCCH and multiple (e.g., two) TCI states are activated by the MAC CE, the terminal device 1 may expect that SFN scheme B is applied for the PDSCH and that two TCI states are indicated. The application of SFN scheme B for the PDSCH may mean that sfnSchemePdsch is set to 'sfnSchemeB'. The application of SFN scheme B for the PDCCH may mean that sfnSchemePdcch is set to 'sfnSchemeB'. The PDSCH may be scheduled by DCI format 1_1 / 1_2.

[0315] If the PDCCH reception includes two PDCCH candidates from the search space set, monitor one PDCCH. The monitoring occasion may be the union of PDCCH monitoring occasions for two PDCCH candidates, and the start of PDCCH reception may be the start of the previous PDCCH candidate. Furthermore, the end of PDCCH reception may be the end of a subsequent PDCCH candidate.

[0316] In one BWP in one serving cell, if no CORESET pool index is provided, a CORESET of 3 or less may be provided. In one BWP in one serving cell, if the same CORESET pool index is provided for all CORESETs, a CORESET of 3 or less may be provided. In one BWP in one serving cell, if CORESET pool index 0 is provided for the first CORESET and CORESET pool index 1 is provided for the second CORESET, a CORESET of 5 or less may be provided.

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

[0318] If a value of 0 is provided for the search space ID, the terminal device 1 may The search space ID may be searchSpaceID. The search space ID may be included in PDCCH-Config or PDCCH-ConfigCommon.

[0319] When two TCI states are provided in one CORESET, the terminal device 1 The QCL information indicated by both of the two TCI states for PDCCH reception in the DMRS antenna port may be assumed. The two TCI states indicate the QCL information (QCL relationship) of the DMRS antenna port for PDCCH reception. You may do so.

[0320] If no TCI state setting is provided in one CORESET, or if two or more TCI states are If an initial setting is provided and no MAC CE activation command is received, the terminal device 1 may assume that the DMRS antenna port associated with PDCCH reception is the SS / PBCH block and QCL. The SS / PBCH block may be identified by the terminal device 1 during the initial access procedure.

[0321] In one CORESET, when two or more TCI state settings are provided by reconfiguration with synch, and when a MAC CE activation command is not received, the terminal device 1 determines whether the DMRS antenna port related to PDCCH reception is a SS / PBCH block or a CSI-RS The SS / PBCH blocks or CSI-RS resources may be identified to the terminal device 1 in a random access procedure initiated by a synchronized reconfiguration. This may also be done.

[0322] In the CORESET with index 0, if a TCI state (for example, a unified TCI state) is provided and the unified TCI state is applied, the terminal device 1 selects a DMRS antenna for first PDCCH reception. It may be assumed that the DMRS antenna port (DMRS port) and the DMRS antenna port for first PDSCH reception are the reference signal and QCL indicated by the TCI state. The unified TCI state may be applied by setting the followUnifiedTCIstate to 'enable'. The next PDSCH reception is scheduled according to the DCI format provided by the first PDCCH reception. The unified TCI state may be DLorJoint-TCIState.

[0323] In the CORESET with index 0, if a TCI state (for example, a unified TCI state) is provided and the unified TCI state is not applied, the terminal device 1 selects a DMRS amplifier for the first PDCCH reception. The DMRS port receives one or more reference signals and a QCL depending on the TCI state that is activated. It's okay to have one.

[0324] If one TCI state is provided in a CORESET with index other than 0, or if a MAC CE activation command is received for one or two provided TCI states, the terminal The device 1 may assume that the DMRS antenna port for PDCCH reception is one or more DL RSs and QCLs configured by the TCI state. The TCI state indicated by the MAC CE activation command may be an "activated TCI state."

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

[0326] If multiple (e.g., two) unified TCI states are provided (or indicated), the indexes 0 and above shall be used. In one CORESET with an outer DMRS antenna port for PDCCH reception and a DMRS antenna port for PDSCH scheduled by the DCI format provided by the PDCCH reception may have a reference signal and QCL provided by one or both of the indicated unified TCI states ("indicated TCI states").

[0327] If unified TCI state is applied, PDCCH in one CORESET with index other than 0 The DMRS antenna port for reception and the DMRS antenna port for the PDSCH scheduled by the DCI format provided by the PDCCH reception are designated by the unified It may be a reference signal and a QCL provided by one TCI state (the "indicated TCI state").

[0328] A set of up to 10 search areas is provided in one BWP in one serving cell. For each search area set, a search area set index may be determined by a first upper layer parameter, a relationship between the search area set and a CORESET may be determined by a second upper layer parameter, and a third upper layer parameter may be determined. At least a search space set (search space set index) linked by the upper layer parameters may be determined. The first upper layer parameter is searchSpaceId. The second upper layer parameter may be controlResourceSetId. In the first search space set, a second search space set index may be provided by a 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 mean that search space linking is applied.

[0329] When the first search area set and the second search area set are linked, the terminal device 1 may monitor according to each search area set at a monitoring opportunity in one slot. A count of PDCCH candidates corresponding to one search space set and a second search space set may be 3. A CORESET pool index for a first CORESET associated with the first search space set may be different from a CORESET pool index for a second CORESET associated with the second search space set. The first search space set and the second search space set may be linked when the first search space set includes a searchSpaceLinking with the second search space set, and the second search space set includes a searchSpaceLinking with the first search space set.

[0330] When the first search space set and the second search space set are linked, and when the third search space set is not linked, the terminal device 1 may monitor the first PDCCH candidate corresponding to the first search space set for the first DCI format, and may monitor the second search space set. For the second DCI format, the terminal device 1 may monitor a second PDCCH candidate corresponding to a third search space set. Furthermore, the terminal device 1 may monitor a third PDCCH candidate corresponding to a third search space set. Furthermore, for the second DCI format, the terminal device 1 may monitor a third PDCCH candidate corresponding to a third search space set. Furthermore, for the same symbol in one CORESET and in one slot, a first PDCCH candidate corresponding to a first search space set, or a second PDCCH candidate corresponding to a second search space set, The second PDCCH candidate corresponding to the first search space set and the third PDCCH candidate corresponding to the third search space set may use the same set of CCEs and may be scrambled in the same way. A third PDCCH candidate corresponding to a third search space set is counted for monitoring. Furthermore, the detected DCI format may not be assumed to be the first DCI format.

[0331] When the first search area set and the second search area set are linked, and when the third search area set and the fourth search area set are linked, and when the DCI format to be detected is If the size of the CORESET is the same, the terminal device 1 may expect different CCEs or different scrambling in one CORESET.

[0332] When the terminal device monitors a plurality of PDCCHs in the first CORESET and the second CORESET, One CORESET may correspond to the CSS set with the smallest index, or may correspond to the USS set with the smallest index. The second CORESET is the same as the first CORESET. It may have the property of 'type D'. Repetition may be applied for PDCCH. The fact that repetition is applied for PDCCH is provided by two-QCLTypeDforPDCCHRepetition. It may be something that is done.

[0333] When the first search space set and the second search space set are linked, the terminal device 1 may detect that the one that finishes later from the two PDCCH receptions is a DCI format.

[0334] A MAC protocol data unit (PDU) is a byte-aligned length A MAC service data unit (MAC SDU) may be a bit string whose length is byte-aligned (i.e., a multiple of 8 bits). A MAC SDU may be contained in a MAC PDU from the first bit onwards. A MAC CE may be a bit string whose length is byte-aligned (i.e., a multiple of 8 bits). The MAC subheader may be a bit string whose length is byte-aligned (i.e., a multiple of 8 bits). Each MAC subheader may be placed immediately before the corresponding MAC SDU, MAC CE, or padding.

[0335] A MAC protocol data unit (MAC PDU) may consist of one or more MAC subPDUs. Each MAC subPDU may consist of one MAC subheader. Each subPDU may consist of one MAC subheader and one MAC Service Data Unit (SDU). Each MAC subPDU may consist of one MAC subheader and one MAC CE. Each MAC subPD U may consist of one MAC subheader and padding. Each MAC subheader may correspond to one MAC SDU, one MAC CE, or padding. One MAC PDU may be one transport block. .

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

[0337] 9 is a diagram showing an example of an activation command A according to an aspect of the present embodiment. A field of a serving cell ID indicates an identification of a serving cell to which the first MAC CE is applied. The BWP ID field may indicate the DL BWP to which the MAC CE applies as a codepoint in the 'bandwidth part indicator field' of the DCI. If it applies to a set of multiple serving cells, the BWP ID field may be ignored. iThe "T" field may indicate the activation / deactivation status of the TCI state with TCI state ID i. i " field set to 1 may indicate that the TCI state with TCI state ID i is activated. i " field set to 1 may indicate that the TCI state with TCI state ID i is mapped to one code point in the 'Transmission Configuration Indication field' of the DCI. i " field is set to 0 means that the TCI state with TCI state ID i is deactivated You may also indicate that i " field set to 1 may indicate that the TCI state with TCI state ID i is not mapped to one code point in the 'Transmission Configuration Indication field' of the DCI. i is the TCI state ID (or TCI-StateID). A TCI state may be accompanied by a TCI state ID. Maximum number of "activated TCI states" The CORESET pool ID field specifies whether the first mapping is The CORESET ID (ControlResourceSetId) set by the pool ID (CORESET pool index) The first mapping is "activated TCI state" and, “T i The "CORESET Pool ID" field may be a mapping of the DCI 'Transmission Configuration Indication' code point set by the "CORESET Pool ID" field. When 1 is set, the first MAC CE is applied to downlink transmissions scheduled by a CORESET with a CORESET pool ID (CORESET pool index) of value 1. Setting the CORESET Pool ID field to 0 may indicate that the first MAC CE applies to downlink transmissions scheduled by a CORESET with a CORESET Pool ID (CORESET Pool Index) of value 0. If the coresetPoolIndex is not set, the CORESET Pool ID in the first MAC CE is used. The field may be ignored.

[0338] The second MAC CE may be an activation command B. The second MAC CE may be a MAC CE for activation or deactivation of a TCI state for a PDSCH (UE-specific PDSCH). The second MAC subheader may identify a MAC CE for activation / deactivation of a TCI state for a PDSCH. For example, the second MAC subheader may be accompanied by a second LCID (Logical channel ID). The second LCID may be an eLCID. For example, the value of the second LCID may be "Enhanced TCI States Activation / Deactivation for UE-specific PDSCH."

[0339] FIG. 10 is a diagram showing an example of an activation command B according to one aspect of this embodiment. i " The field is the TCI state ID. i,2 It may also indicate whether there is an octet containing For example, “C i " field is set to 1, TCI State ID i,2There may be an octet containing "C i If the " field is set to 0, the TCI state ID i,2 The octet containing the TCI Status ID may not be present. i,j The field may indicate a TCI state identified by a TCI State ID (TCI-StateId). i,j may represent the j-th TCI state indicated for the i-th codepoint of the DCI 'Transmission configuration indication' field. i,2 is "C i " field indication. i may be the index of the code point in the DCI 'Transmission configuration indicating' field. j is 1 or 2. It's okay to have one.

[0340] The third MAC CE may be an activation command C. The third MAC CE may be a MAC CE for activation or deactivation of the unified TCI state. The third MAC subheader identifies the MAC CE for activation / deactivation of the unified TCI state. For example, the third MAC subheader may be accompanied by a third LCID (Logical channel ID). The third LCID may be an eLCID. For example, the value of the third LCID may be "Unified TCI States Activation / Deactivation MAC CE."

[0341] FIG. 11 is a diagram showing an example of an activation command C according to an aspect of this embodiment. The DL BWP ID field may indicate one downlink BWP to which MAC CE is applied as one code point in the DCI 'bandwidth part indicator' field. The UL BWP ID field may indicate , one uplink BWP to which MAC CE is applied is set in the DCI 'bandwidth part indicator' field. It may be indicated as a single code point of the i The " field may indicate whether each TCI codepoint has multiple TCI states or one TCI state. For example, For example, “P i If the "field is set to 1, the i-th TCI code point is in DL TCI state. This may include both the UL TCI state and the UL TCI state. i If the field is set to 0, In this case, the i-th TCI codepoint may contain either DL TCI state or UL TCI state. The " field indicates whether the TCI state ID in the same octet is joint (both DL and UL) / DL, or For example, if the "D / U" field is set to 1, the TCI state ID in the same octet may be for DL / joint. For example, if the "D / U" field is set 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). If the "D / U" field is set to 1, a 7-bit long "TCI state ID" may be used. If the "D / U" field is set to 0, the most significant bit of the "TCI state ID" may be considered as reserved, The remaining 6 bits may indicate the ID of the UL-TCIState (UL-TCIState-Id). The DL TCI state may be a TCI state that applies to some or all of the PDSCH, PDCCH, and CSI-RS. The UL TCI state may be a TCI state that applies to some or all of the PUSCH, PUCCH, and SRS. Joint TCI state may be a TCI state representing both DL TCI state and UL TCI state. DLorJointTCIState may be a DL TCI state or a Joint TCI state. UL-TCIState may be a UL TCI state. DL TCI state may be a TCI state for DL. Joint TCI state may be a TCI state for both DL and UL. UL TCI state may be a TCI state for UL The TCI codepoint may be a DCI'Transmission configuration indication The "R" field in MAC CE is a code point of the It may be a reserved bit. The reserved bit may be set to 0.

[0342] The fourth MAC CE may be an activation command D. The fifth MAC CE may be an activation command E. The fourth MAC CE may be a command for activation or deactivation of the unified TCI state. For example, the fourth MAC CE may be a MAC CE for activation or deactivation of the enhanced unified TCI state. The fifth MAC CE may be a MAC CE for activation or deactivation of the unified TCI state. n), or deactivation. For example, the fifth MAC CE may be a MAC CE for activation of the Enhanced unified TCI state, or The fourth MAC subheader may be a MAC CE for deactivation. Thus, the MAC CE for activation / deactivation of the unified TCI state may be identified. The header may identify the MAC CE for activating / deactivating the unified TCI state. For example, the fourth MAC subheader may be accompanied by a fourth LCID (Logical channel ID). For example, the fifth MAC subheader may be accompanied by a fifth LCID (Logical channel ID). The fourth 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] 12 is a diagram showing an example of an activation command D according to one aspect of this embodiment. The cell ID (Serving cell ID) field is the identifier of the serving cell to which the fourth MAC CE is applied. The DL BWP ID field may indicate one downlink BWP to which the fourth MAC CE is applied. The DL BWP ID field may indicate one downlink BWP to which the fourth MAC CE is applied. The link BWP is represented by one code point in the DCI 'bandwidth part indicator' field. The UL BWP ID field may indicate one uplink BWP to which the fourth MAC CE is applied. The UL BWP ID field may indicate one uplink BWP to which the fourth MAC CE is applied. The link BWP is represented as one code point in the DCI 'bandwidth part indicator' field. You can also give instructions by saying "P i The " field may indicate whether each TCI codepoint has multiple TCI states or one TCI state. For example, "P i "1 in the field If set, the ith TCI codepoint may contain both DL and UL TCI states. For example, "P i If the " field is set to 0, the i-th TCI code point "D / U" may include one of DL TCI state and UL TCI state. i The " field is It may also indicate whether the endpoint is for a joint (both DL and UL) / DL or UL. For example, "D / U i If the " field is set to 1, the i-th TCI codepoint may be for DL / joint. For example, "D / U i If the " field is set to 0, the i-th TCI codepoint may be for UL. j The "T" field may indicate the activation / deactivation status of the TCI state with TCI state ID j. j ” The setting of the field to 1 indicates that the TCI state with TCI state ID j is activated. You may also indicate "T j " field is set to 1 means that the TCI with TCI state ID j One code point in the 'Transmission Configuration Indication field' with the state DCI It may be indicated that "T j " field set to 0 may indicate that the TCI state with TCI state ID j is deactivated. j " field set to 1 may indicate that the TCI state with TCI state ID j is not mapped to one code point in the 'Transmission Configuration Indication field' of the DCI. j may be either the UL TCI State ID (UL-TCIState-Id) or the DL / Joint TCI State ID (DLorJoint-TCIState-Id). The number of UL TCI status IDs may be up to 64. The number of DL / Joint TCI status IDs may be up to 128. j may be {0,...,63}. j may be {0,...,127}. j can be {0,...,191}. For example, the ith TCI code point corresponds to the UL TCI condition, j The " field may indicate the activation / deactivation status of the TCI state with TCI state ID j-128. For example, if the ith TCI codepoint corresponds to the DL TCI state or the Joint TCI state, then "T j The " field may indicate the activation / deactivation status of the TCI state with TCI state ID j-64. For example, if the ith TCI codepoint corresponds to the UL TCI state, then "T j " field set to 1 indicates that the TCI with TCI state ID j-128 For example, if the i-th TCI codepoint corresponds to the UL TCI state, then "T j " field set to 1 may indicate that the TCI state with TCI state ID j-128 is mapped to the ith TCI codepoint. If the second TCI code point corresponds to a DL TCI state or a Joint TCI state, j " field set to 1 may indicate that the TCI state with TCI state ID j-64 is activated. For example, if the i-th TCI codepoint is in the DL TCI state or the Joint TCI If you are dealing with a state, j " field set to 1 indicates that TCI state ID j-64 The CORESET Pool ID field may indicate that the accompanying TCI state is mapped to the ith TCI codepoint. The CORESET Pool ID field may indicate that the second mapping is to the CORESET Pool ID (CORESET Pool Index). It indicates that it is unique to the CORESET ID (ControlResourceSetId) set in The second mapping is "activated TCI state" and "T i "By field The code point of the DCI 'Transmission Configuration Indication' to be set may be a mapping of the value 1. Scheduled by CORESET with CORESET pool ID (CORESET pool index) Setting the CORESET Pool ID field to 0 may indicate that MAC CE applies to downlink or uplink transmissions scheduled by a CORESET with a CORESET Pool ID (CORESET Pool Index) of value 0. CORESET Pool If the index (coresetPoolIndex) is not set, the CORESET pool in the fourth MAC CE The rule ID field may be ignored.

[0344] FIG. 13 is a diagram showing an example of an activation command E according to one aspect of this embodiment. The CORESET pool ID field may be reserved. i,j "Feel The code may indicate whether each TCI codepoint has multiple TCI states or one TCI state. For example, "P i,j If the "field is set to 1, the i-th TCI code Even if the j-th TCI state at the end point is two (e.g., DL TCI state and UL TCI state), Good. For example, "P i,j If the " field is set to 0, the i-th TCI code point The j-th TCI state in may be one (e.g., DL TCI state or UL TCI state). "D / U j The " field may indicate whether the TCI state ID in the same octet is for joint (both DL and UL) / DL or UL. j " fields are in the same octet Indicates whether the TCI status ID in the group is for joint (both DL and UL) / DL or UL. For example, "D / U j If the " field is set to 1, then The TCI status ID may be for DL / joint. For example, j If the "TCI state ID" field is set to 0, the TCI state ID in the same octet may be for UL. i,j The " field may indicate the TCI state identified by the DL / Joint TCI State ID (TCI-StateId) or the UL TCI State ID (UL-TCIState-Id). j " field is set to 1 If the TCI state ID is 7 bits long, i,j " may be used.j If the "TCI state ID" field is set to 0, i,j The most significant bit of " may be considered as a reserve, and the remaining 6 bits may indicate the ID of the UL-TCIState (UL TCI State Id, UL-TCIState-Id).

[0345] In FIG. 13, j may correspond to a CORESET pool ID (CORESET pool index). For example, j=1 may correspond to CORESET pool ID (CORESET pool index)=0. For example, j=2 may correspond to CORESET pool ID (CORESET pool index)=1. For example, j=0 may correspond to CORESET pool ID (CORESET pool index)=0. , j=1 may correspond to CORESET pool ID (CORESET pool index)=1. Whether j corresponds to CORESET pool ID (CORESET pool index) is determined by the “J” field. For example, if the "J" field is set to 1, j may correspond to the CORESET pool ID (CORESET pool index). For example, if the "J" field is set to 0, If set, j corresponds to the index of the TCI state in one codepoint. "P i,j The " field may indicate whether each TCI codepoint in the DCI associated with the CORESET pool ID corresponding to j has multiple TCI states or one TCI state. Good. For example, "P i,j If the "field is set to 1, the CORESET pool I corresponding to j The i-th TCI codepoint of the DCI associated with D corresponds to both the DL TCI state and the UL TCI state. For example, "Pi,j If the "field is set to 0, the CORESET pool corresponding to j is The i-th TCI codepoint of the DCI associated with the rule ID may correspond to either the DL TCI state or the UL TCI state. The CORESET pool index (upper layer parameter coresetPoolIndex) is set. If not, j does not have to correspond to a CORESET pool ID.

[0346] The activation command F may be a MAC CE for TCI status indication for the PDCCH. The initialization command F consists of a 5-bit serving cell ID, a 4-bit CORESET ID, and a 7-bit TCI. It may consist of a state ID and

[0347] The activation command G may be a MAC CE for TCI status indication for the PDCCH. The activation command G may consist 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. If one or more CORESETs in one BWP are configured with different CORESET pool index values, the activation command G may not be applied to one or more CORESETs. If SFN is applied for PDCCH, If so, activation command G may be applied. SFN for PDCCH may be applied. In this case, sfnSchemePdcch may be set.

[0348] The terminal device 1 may receive an activation command. The activation command may 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 formats 1_0 / 1_1 / 1_2 may be used for scheduling PDSCH A BWP indication (Bandwidth part indicator) field may be included in one or both of DCI format 1_1 and DCI format 1_2. The number of information bits constituting the BWP indication field may be determined based on the number of DL BWPs. A TPC command (TPC command for scheduled PUCCH) field may be included in one or both of DCI format 1_1 and DCI format 1_2. A second TPC command (Second TPC command for scheduled PUCCH) field may be included in one or both of DCI format 1_1 and DCI format 1_2. PUCCH) field is either DCI format 1_1 or DCI format 1_2 It may be included in both, for example, when the upper layer parameter SecondTPCFieldDCI is set. , a second TPC command (Second TPC command for scheduled PUCCH) field may be included in DCI format 1_1.

[0350] DCI format 1_0, DCI format 1_1, and DCI format 1_2 are PDSCH DCI format 1_0 may be a DCI format for scheduling. DCI format 1_0 may be used for scheduling the PDSCH in one downlink cell.

[0351] The antenna port(s) field may be included in DCI format 1_1 and DCI format 1_2. Information bits constituting the antenna port field The number may be 4, 5, or 6 bits. The number of information bits constituting the antenna port field may be 4, 5, 6, or 7 bits. The number of information bits constituting the antenna port field may be 4, 5, 6, 7, or 8 bits. The number of CDM groups without a value may be one of the values ​​1, 2, and 3. The number of CDM groups without data may refer to CDM group 0. The number of CDM groups without data with value 2 A CDM group number with no data of value 3 may refer to CDM groups {0, 1, 2}.

[0352] The higher layer parameter dmrs-Type being 1 means that DMRS configuration type 1 is configured. The higher layer parameter dmrs-Type being 2 means that DMRS configuration type 2 is configured. The upper layer parameter maxLength being 1 means that the forward DMRS symbol The maximum number of symbols may be 1. The upper layer parameter maxLength is 2. For example, the maximum number of forward DMRS symbols may be two. The layer parameter maxLength is 1, which means that the single-symbol forward DMRS (forward DMRS single) For example, the upper layer parameter maxLength is set to 2. That is, a single-symbol forward DMRS (forward DMRS symbol) or a double-symbol forward DMRS may be configured.

[0353] When DMRS configuration type 1 and a single symbol forward DMRS symbol are configured, The number of information bits constituting the antenna port field may be 4. When DMRS configuration type 1 and a single-symbol anterior DMRS symbol are configured, and the upper layer parameter ExtendedDMRSports is not configured, the information constituting the antenna port field may be 4. The number of bits may be 4. When DMRS configuration type 1 and a single-symbol forward DMRS symbol are configured, and the upper layer parameter ExtendedDMRSports is disabled If set, the number of information bits constituting the antenna port field may be 4. If the value of the antenna port field consisting of four information bits is 0, the DMRS port may be 0 and the number of CDM groups without data may be 1. If the value of the antenna port field consisting of four information bits is 1, the DMRS port may be 1 and the number of CDM groups without data may be 1. If the value of the antenna port field consisting of four information bits is 1, the DMRS port may be 1 and the number of CDM groups without data may be 1. If the value of the antenna port field is 2, the DMRS ports may be {0,1} and the number of CDM groups without data may be 1. If the port field value is 3, the DMRS port may be 0, and the CDM The number of groups may be 2. If the value of the antenna port field consisting of 4 information bits is 4, the DMRS port may be 1 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 4 information bits is 5, the DMRS port may be 2 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of four information bits is 6, the DMRS port may be 3 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of four information bits is 7, the DMRS port may be {0,1} and the number of CDM groups without data may be 2. If the value of the antenna port field to be used is 8, the DMRS ports may be {2,3} and the number of CDM groups without data may be 2. If the value of the antenna port field is 9, the DMRS ports may be {0, 1, 2}, and the number of CDM groups without data may be 2. If the value of the field is 10, the DMRS ports may be {0,1,2,3} and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of four information bits is 11, the DMRS ports may be {0,2} and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of four information bits is 12, 13, 14, or 15, the DMRS ports may be undefined (reserved) and the number of CDM groups without data may be undefined (reserved).

[0354] When DMRS configuration type 1 and a single symbol forward DMRS symbol are configured, And if the higher layer parameter ExtendedDMRSports is set, the antenna port field The number of information bits constituting the DMRS symbol may be 5. When DMRS configuration type 1 and a single-symbol forward DMRS symbol are configured, and the higher layer parameter ExtendedDMRSports If the value of the antenna port field consisting of five information bits is set to 0, the number of information bits constituting the antenna port field may be 5. If there is, the DMRS port may be 0 and the number of CDM groups without data may be 1. If the value of the antenna port field consisting of five information bits is 1, the DMRS port may be 1 and the number of CDM groups without data may be 1. If the value of the antenna port field consisting of five information bits is 2, the DMRS port may be {0,1}. The number of CDM groups without data may be 1. If the value of the antenna port field is 3, the DMRS port may be 0 and the number of CDM groups without data may be 2. If the value of the antenna port field is 4, the DMRS port may be 1 and the number of CDM groups without data may be 2. The antenna port field, consisting of 5 information bits, If the value of field is 5, the number of DMRS ports may be 2, and the number of CDM groups without data The value of the antenna port field, which consists of five information bits, can be 6. In this case, the number of DMRS ports may be 3, and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 7, the DMRS ports may be {0,1} and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 8, the DMRS ports may be {2,3} and the number of CDM groups without data may be 2. 5 information bits If the value of the antenna port field consisting of 5 information bits is 9, the DMRS ports may be {0, 1, 2} and the number of CDM groups without data may be 2. If the value of the antenna port field is 10, the DMRS ports may be {0,1,2,3}. The number of CDM groups without data may be 2. It consists of 5 information bits. If the value of the antenna port field is 11, the DMRS ports may be {0,2}, and the default The number of CDM groups without data can be 2. If the value of the antenna port field is 12, the DMRS ports may be 8 and the number of CDM groups without data may be 2. If the value of the antenna port field, which consists of 5 information bits, is 13, the DMRS ports may be 9 and the number of CDM groups without data may be 2. If the value of the antenna port field, which consists of 5 information bits, is 14, the DMRS ports may be 10 and the number of CDM groups without data may be 2. If the value of the antenna port field, which consists of 5 information bits, is 15, the DMRS The number of ports may be 11, and the number of CDM groups without data may be 2. If the value of the antenna port field, which consists of five information bits, is 16, the DMRS ports may be {8,9} and the number of CDM groups without data may be 2. If the value of the antenna port field, which consists of five information bits, is 17, the DMRS ports may be {10,11}. The number of CDM groups without data may be 2. If the value of the antenna port field used is 18, the DMRS ports may be {8,9,10} and the number of CDM groups without data may be 2. If the value of the Antenna Port field is 19, the DMRS ports may be {8,9,10,11}. The number of CDM groups without data may be 2. If the value of the Tener Ports field indicates some or all of the DMRS ports {8,9,10,11}, The number of data-free CDM groups may be two.

[0355] If DMRS configuration type 1 is configured and the maximum number of forward DMRS symbols is configured to be 2, the number of information bits constituting the antenna port field may be 5. If DMRS configuration type 1 is configured, and the maximum number of forward DMRS symbols is configured to be 2, and the upper layer parameter ExtendedDMRSports is not configured, The number of information bits configuring the antenna port field may be 5. When DMRS configuration type 1 is configured and when the maximum number of forward DMRS symbols is configured to be 2, If the upper layer parameter ExtendedDMRSports is set to invalid, The number of information bits constituting the antenna port field may be 5. The antenna port field consisting of 5 information bits may be used for some or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7}. may be indicated.

[0356] If DMRS configuration type 1 is configured and the maximum number of forward DMRS symbols is configured to be 2, the number of information bits constituting the antenna port field may be 5. If DMRS configuration type 1 is configured, and the maximum number of forward DMRS symbols is 2, is set, and the higher layer parameter ExtendedDMRSports is not set, The number of information bits configuring the antenna port field may be 5. When DMRS configuration type 1 is configured and when the maximum number of forward DMRS symbols is configured to be 2, If the upper layer parameter ExtendedDMRSports is set to invalid, The number of information bits constituting the antenna port field may be 5. The antenna port field consisting of 5 information bits may be used for some or all of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7}. may be indicated.

[0357] If DMRS configuration type 1 is configured, and the maximum number of forward DMRS symbols is configured to be 2, and the upper layer parameter ExtendedDMRSports is configured, then The number of information bits constituting the Tenerport field may be 6. When DMRS configuration type 1 is configured and the maximum number of forward DMRS symbols is configured to be 2, If the upper layer parameter ExtendedDMRSports is set to enabled, the antenna The number of information bits constituting the port field may be 6. The antenna port field consisting of 6 information bits may indicate some 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 consisting of 6 information bits indicates some or all of the DMRS ports {8, 9, 10, 11, 12, 13, 14, 15}, the data The number of CDM groups without a tag may be two.

[0358] In the case of DMRS configuration type 1, the antenna port (DMRS port) that becomes available by applying the DMRS extension may correspond to the number of CDM groups without data being 2. In the case of Type 1, the antenna ports (DMRS ports) that become available when the DMRS extension is applied do not need to correspond to the number of CDM groups without data being one.

[0359] If DMRS configuration type 2 is configured and the maximum number of forward DMRS symbols is configured to be 1, the number of information bits constituting the antenna port field may be 5. If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 1, and the upper layer parameter ExtendedDMRSports is not configured, The number of information bits configuring the antenna port field may be 5. When DMRS configuration type 2 is configured and when the maximum number of forward DMRS symbols is configured to be 1, If the upper layer parameter ExtendedDMRSports is set to invalid, The number of information bits constituting the antenna port field may be 5. The antenna port field consisting of 5 information bits may indicate some or all of the DMRS ports {0, 1, 2, 3, 4, 5}. It may be shown.

[0360] If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 1, and the upper layer parameter ExtendedDMRSports is configured, then The number of information bits constituting the Tenerport field may be 6. When DMRS configuration type 2 is configured and when the maximum number of forward DMRS symbols is configured to be 1, If the upper layer parameter ExtendedDMRSports is set to enabled, the antenna The number of information bits constituting the port field may be 6. The antenna port field consisting of 6 information bits is a part of the DMRS ports {0, 1, 2, 3, 4, 5, 12, 13, 14, 15, 16, 17}. Or it may indicate all. Antenna port field consisting of 6 information bits When the value of indicates some or all of the DMRS ports {12, 13, 14, 15, 16, 17}, the number of CDM groups without data may be one or both of two and three, and does not have to be one.

[0361] If DMRS configuration type 2 is configured and the maximum number of forward DMRS symbols is configured to be 2, the number of information bits constituting the antenna port field may be 6. If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 2, and the upper layer parameter ExtendedDMRSports is not configured, The number of information bits configuring the antenna port field may be 6. When DMRS configuration type 2 is configured and when the maximum number of forward DMRS symbols is configured to be 2, If the upper layer parameter ExtendedDMRSports is set to invalid, The number of information bits constituting the antenna port field may be 6. The antenna port field consisting of 6 information bits is a part of the DMRS ports {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}. Or, all of them may be specified.

[0362] If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 2, and the upper layer parameter ExtendedDMRSports is configured, then The number of information bits constituting the Tenerport field may be 7. When DMRS configuration type 2 is configured and the maximum number of forward DMRS symbols is configured to be 2, If the upper layer parameter ExtendedDMRSports is set to enabled, the antenna The number of information bits constituting the port field may be 7. The antenna port field consisting of 7 information bits may indicate some 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 consisting of 7 information bits indicates some 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 may be one or both of 2 and 3, and does not have to be 1.

[0363] In the case of DMRS configuration type 2, the antenna ports (DMRS ports) that become available when the DMRS extension is applied may correspond to the number of CDM groups without data being 3. In the case of Type 1, the antenna port (DMRS port) that becomes available when the DMRS extension is applied does not have to correspond to the number of CDM groups without data being 1. In the case of DMRS configuration Type 1, the antenna port (DMRS port) that becomes available when the DMRS extension is applied does not have to correspond to the number of CDM groups without data being 2.

[0364] If the DMRS configuration type is 1, and the maximum number of forward DMRS symbols is set to 1, and the upper layer parameter ExtendedDMRSports is set, the antenna port field The number of information bits constituting the antenna port field may be 6. When the DMRS configuration type is 1, the maximum number of forward DMRS symbols is set to 1, and the upper layer parameter ExtendedDMRSports is set to be enabled, the number of information bits constituting the antenna port field may be 6. A first part of the antenna port field consisting of 6 information bits may be used to indicate a DMRS port, and the second part of the antenna port field consisting of 6 information bits may be used to indicate a DMRS port. A second portion of the antenna port field may be used for DMRS reception assistance. stomach.

[0365] If DMRS configuration type 1 is configured, and the maximum number of forward DMRS symbols is configured to be 2, and the upper layer parameter ExtendedDMRSports is configured, then The number of information bits constituting the Tenerport field may be 7. When DMRS configuration type 1 is configured and the maximum number of forward DMRS symbols is configured to be 2, If the upper layer parameter ExtendedDMRSports is set to enabled, the antenna The number of information bits constituting the port field may be 7. The antenna port field consisting of 7 information bits may indicate some 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 consisting of 7 information bits indicates some or all of the DMRS ports {8, 9, 10, 11, 12, 13, 14, 15}, the data The number of CDM groups without a data bit may be 2. The first part of the port field may be used to indicate the DMRS port, and A second portion of the antenna port field, consisting of four information bits, may be used for DMRS reception assistance.

[0366] If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 1, and the upper layer parameter ExtendedDMRSports is configured, then The number of information bits constituting the Tenerport field may be 7. When DMRS configuration type 2 is configured and when the maximum number of forward DMRS symbols is configured to be 1, If the upper layer parameter ExtendedDMRSports is set to enabled, the antenna The number of information bits constituting the port field may be 7. The antenna port field consisting of 7 information bits is a part of the DMRS ports {0, 1, 2, 3, 4, 5, 12, 13, 14, 15, 16, 17}. Or it may indicate all. Antenna port field consisting of 7 information bits If the value of indicates some or all of the DMRS ports {12, 13, 14, 15, 16, 17}, the number of CDM groups without data may be 2. The first part of the antenna port field, consisting of 7 information bits, may be used to indicate the DMRS ports, and the second part of the 7 information bits A second portion of the antenna port field consisting of the DMA port may be used for DMRS reception assistance.

[0367] If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 2, and the upper layer parameter ExtendedDMRSports is configured, then The number of information bits constituting the Tenerport field may be 8. When DMRS configuration type 2 is configured and the maximum number of forward DMRS symbols is configured to be 2, If the upper layer parameter ExtendedDMRSports is set to enabled, the antenna The number of information bits constituting the port field may be 8. The antenna port field consisting of 8 information bits may indicate some 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 consisting of 8 information bits indicates some 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 may be 2. A first part of the antenna port field consisting of 8 information bits may be used to indicate the DMRS ports, and the antenna port field consisting of 7 information bits may be used to indicate the DMRS ports. A second portion of the field may be used for DMRS reception assistance.

[0368] The number of DMRS ports may be the number of layers (number of transmission layers) v. Antenna ports {p0,...,pv-1} (antenna port value, antenna port number) may be the sum of DMRS ports (DMRS port value, DMRS port number) and 1000. For example, DMRS port 0 may correspond to antenna port p0=1000. For example, DMRS port 1 may correspond to antenna port p1=1001. For example, DMRS port {0,1} may correspond to antenna ports {p0=1000, p1=1001}. For example, DMRS port {2,3} may 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, when higher layer parameters are configured, the TCI (Transmission configuration indication) field is included in the DCI It may be included in either or both of Format 1_1 and DCI Format 1_2. For example, when the upper layer parameter tci-PresentInDCI is configured, a 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 in the DCI format. It may be indicated by a field.

[0370] Multiple uplink channels / signals (e.g., PUSCH, PUCCH, SRS) and / or multiple downlink channels / signals (e.g., PDSCH, PDCCH, CSI-RS) may be in one TCI state. In other words, beam management is expected to be more efficient by applying one TCI state to multiple channels / signals. However, in the case of Multi-TRP (Multiple Transmission and Reception Points), On the other hand, applying one TCI state makes it difficult to switch beams for each TRP. Therefore, the challenge is to apply one TCI state to multiple channels / signals and each TRP. This may lead to efficient communication and efficient beam management. In addition, some or all of the FDM / TDM / SDM / SFN techniques and repetition techniques may be applied. Taking into account the PDSCH / PDCCH, efficient beam management is expected. As a solution, it is considered that PDSCH / PDCCH to which some or all of the FDM / TDM / SDM / SFN techniques and repetition techniques are applied may be used for TCI state switching and activation commands. The PDSCH-MTRP method is a replacement for the FDM method, the TDM method, the SDM method, and the SFN method for PDSCH. It may also be a general term for:

[0371] FIG. 14 is a diagram illustrating an example of TCI state management according to one aspect of the present embodiment. The terminal device 1 may receive one or both of a PDSCH 1403 and a PDCCH 1404. The PDSCH 1403 is a The terminal device 1 may receive a PDCCH 1404 on which the DCI is mapped. The black circle in FIG. 14 may represent one TCI state. stomach.

[0372] One or more TCI states 1400 may be configured by higher layer parameters. For example, one or more UL TCI states (UL-TCIState) may be configured by higher layer parameters for each uplink BWP (BWP-UplinkDedicated). For example, one or more DL / Joint TCI states (DLorJointTCIState) may be configured by higher layer parameters for each PDSCH configuration (PDSCH-Config). One TCI state may be associated with one TCI state ID. For example, one UL TCI state A state may be associated with one UL TCI State ID (TCI-UL-State-Id, UL-TCIState-Id). For example, one DL / Joint TCI state (TCI-state) may be associated with one TCI State ID (TCI-stateId). The one or more TCI states configured by higher layer parameters may be configured TCI states 1400.

[0373] One or more TCI states 1401 may be activated by a MAC CE (e.g., an activation command). The first PDSCH may carry a first transport block. A transport block may be one MAC PDU. One MAC PDU may contain an activation command or a MAC CE, also called an activation command. For example, an activation command may be an activation command D or an activation command E. One or more TCI states and / or one or more "TCI state pairs" may be associated with one or more code points. For example, depending on the activation command, one or more TCI states and / or "pairs of TCI states" may be mapped to one or more code points. Each TCI state or each pair of TCI states may be mapped to one code point. For example, each TCI state or pair of TCI states may be mapped to one code point by the activation command. The codepoint to be mapped may be a codepoint in a TCI field The codepoint to which a TCI state or pair of TCI states is mapped may be the codepoint of a TCI field in DCI format 1_1 or DCI format 1_2. The code point to which a TCI state or pair of TCI states is mapped is The TCI state that is activated by the MAC CE may be the activated TCI state 1401. The TCI state that is mapped to the code point of the TCI field may be the activated TCI state 1401.

[0374] If the CORESET Pool Index (coresetPoolIndex) is not set in one or more CORESETs (ControlResourceSets), the Activate Command E may be used. If the pool index (coresetPoolIndex) is set in one or more CORESETs (ControlResourceSets), activation command D or activation command E may be used. For example, in single-DCI mode, activation command E may be used. For example, in multi-DCI mode, activation command D may be used. In the single-DCI mode, activation command D may be used. For example, activation command E may be used in both the single-DCI mode and the multi-DCI mode.

[0375] The one or more TCI states 1402 may be indicated by a first DCI. The first DCI may be DCI format 1_1 or DCI format 1_2. The first DCI may include a TCI (Transmission configuration indication) field. The TCI field may be Alternatively, the first DCI format may indicate multiple (e.g., two or four) TCI states. For example, one value of the TCI field may correspond to one code point of the TCI field. The TCI state indicated by the first DCI format may be the indicated TCI state 1402. The indicated TCI state 1402 may be some or all of the UL TCI state, DL TCI state, and Joint TCI state. The UL TCI state may be the TCI state for the PUSCH, PUCCH, and SRS. The DL TCI state may be the TCI state for the PDSCH, PDCCH, and CSI-RS. The Joint TCI state includes the TCI states for PUSCH, PUCCH, SRS, PDSCH, PDCCH, and CSI-RS. It may be in this state.

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

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

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

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

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

[0381] The indicated TCI state 1402 is Nth from the last OFDM symbol of the PDCCH to which the DCI format 1_1 / 1_2 is mapped. symb The TCI state 1402 may be applied from the first slot after the symbol. The indicated TCI state 1402 may be applied to multiple channels / signals. symb It was BeamAppTime That's fine.

[0382] Some or all of one or more TCI states 1402 may be applied to the PDSCH 1403. The "indicated TCI state 1402" that applies to the PDSCH 1403 may include one or more DL TCI states and one Or it may be one or both of multiple Joint TCI states.

[0383] Some or all of the one or more TCI states 1402 may apply to the PDCCH 1404. The "indicated TCI state 1402" applied to 1404 may be one or more DL TCI states and one Or it may be one or both of multiple Joint TCI states.

[0384] The indicated TCI state 1402 may include at least a TCI state 1450 and a TCI state 1451. One or both of the TCI state 1450 and the TCI state 1451 may apply to the PDCCH 1403. One or both of the TCI state 1450 and the TCI state 1451 may apply to the PDCCH 1404.

[0385] The DCI format for the PDSCH 1403 may provide some or all of the first indication, the second indication, the third indication, and the fourth indication. The DCI format for the PDSCH 1403 may provide any of the first indication, the second indication, the third indication, and the fourth indication. For example, one field in the DCI format for the PDSCH 1403 may provide the first indication, Any of the second instruction, the third instruction, and the fourth instruction may be given. A field in a DCI format for a PDSCH 1403 may provide any of a first indication, a second indication, a third indication, and a fourth indication for a PDSCH 1403 scheduled by the DCI format. The DCI format for this purpose is the last OFDM symbol of the PDCCH to which the DCI format is mapped. At least N symb Any of the first, second, third, and fourth indications may be given for the PDSCH 1403 transmitted after the symbol.

[0386] The upper layer parameters for the PDCCH 1404 are a first indication, a second indication, a third indication, and and part or all of the fourth instruction. may provide any one of the first indication, the second indication, the third indication, and the fourth indication. The higher layer parameters for the PDCCH 1404 may provide any one of the first indication, the second indication, the third indication, and the fourth indication to the PDCCH 1404.

[0387] The first indication and the second indication may be that one of the first TCI state 1450 and the second TCI state 1451 applies to one or both of the PDSCH 1403 and the PDCCH 1404. The first indication may be that the first TCI state 1450 applies to one or both of the PDSCH 1403 and the PDCCH 1404. The second indication may be that the second TCI state 1451 is to be applied to one or both of the PDSCH 1403 and the PDCCH 1404. The third indication and the first indication may be that the second TCI state 1451 is to be applied to one or both of the PDSCH 1403 and the PDCCH 1404. The fourth indication may be that both the first TCI state 1450 and the second TCI state 1451 apply to one or both of the PDSCH 1403 and the PDCCH 1404. The second indication may be that the second TCI state 1451 is to be used. The third and fourth indications may be the first TCI state 1450 and the second TCI state 1460. The first indication may be that the first TCI state 1450 applies to multiple downlink channels / signals including the PDSCH 1403. The second indication may be that the second TCI state 1451 applies to multiple downlink channels / signals including the PDSCH 1403. The third and fourth instructions may be applied to the first TCI condition. Both the first TCI state 1450 and the second TCI state 1451 support multiple uplink channels / signals including the PDSCH 1403. The same may be applied to the number.

[0388] The DCI format for the PDSCH 1403 may include a TRP indication field. The TRP indication field may provide any of a first indication, a second indication, a third indication, and a fourth indication. For example, if the TRP indication field indicates 0 (“00”), the first indication may be executed. For example, if the TRP indication field indicates 1 (“01”), the second indication may be executed. For example, if the TRP indication field indicates 2 (“10”), the third indication may be executed. For example, if the TRP indication field indicates 3 (“11”), the fourth indication may be executed. For example, if the TRP indication field is 0 (“00”), the first indication may be given. For example, if the TRP indication field is 1 (“01”), the second indication may be given. For example, a TRP indication field of 2 ("10") may indicate that a third indication is given. For example, a TRP indication field of 3 ("11") may indicate that a fourth indication is given. The TRP indication field may be a field different from the TCI field. If higher layer parameters are configured, the TRP indication The number of information bits constituting the indication field may be 2. If there is no TRP indication field, the number of information bits constituting the TRP indication field may be 0. The field may be included in both the UL scheduling DCI format and the DL scheduling DCI format. The UL scheduling DCI format may be some or all of DCI format 0_0, DCI format 0_1, and DCI format 0_2. The scheduling DCI formats are DCI format 1_0, DCI format 1_1, and It may also be part or all of DCI format 1_2.

[0389] The DCI format for the PDSCH 1403 may include a TCI field. The TCI field may provide any of a first instruction, a second instruction, a third instruction, and a fourth instruction. For example, if the TCI field indicates 0 ("00"), the first instruction may be executed. For example, if the TCI field indicates 1 ("01"), the second instruction may be executed. For example, if the TCI field indicates 2 ("10"), the third instruction may be executed. For example, if the TCI field indicates 3 ("10"), the third instruction may be executed. For example, if the TCI field indicates 4 ("10"), the third instruction may be executed. If the TCI field indicates 3 ("11"), the fourth instruction may be executed. For example, if the TCI field is 0 ("00"), the first instruction may be given. For example, if the TCI field is 1 ("01"), the second instruction may be given. For example, if the TCI field is 2 ("10"), the third instruction may be given. For example, For example, a TCI field of 3 ("11") may indicate that a fourth indication is given.

[0390] The upper layer parameters for PDCCH 1403 are a first indication, a second indication, a third indication, and For example, the higher layer parameters for the PDCCH 1403 may be For example, if the higher layer parameters for PDCCH 1403 indicate 1 ("01"), the first instruction may be executed. For example, if the higher layer parameters for PDCCH 1403 indicate 2 ("10"), the second instruction may be executed. For example, if the higher layer parameters for PDCCH 1403 indicate 2 ("10"), the third instruction may be executed. For example, if the higher layer parameter for PDCCH 1403 indicates 3 ("11"), the fourth instruction may be executed. For example, if the higher layer parameter for PDCCH 1403 is 0 ("00"), the first instruction may be given. For example, if the higher layer parameter for PDCCH 1403 indicates 1 ("00"), the If the parameter is 1 ("01"), a second instruction may be given. For example, a third indication may be given when the higher layer parameter for PDCCH 1403 is 2 ("10"). For example, a fourth indication may be given when the higher layer parameter for PDCCH 1403 is 3 ("11").

[0391] A TDM scheme may be applied for the PDSCH 1403. The PDSCH 1403 may be received in two PDSCH transmission opportunities (a first transmission opportunity and a second transmission opportunity). For example, when a TDM scheme (TDM scheme A) is applied, the PDSCH 1403 may be received in two PDSCH transmission opportunities (a first transmission opportunity and a second transmission opportunity). The first transmission opportunity and the second transmission opportunity overlap in the time domain. The PDSCH 1403 may be the first transmission opportunity. and a second transmission opportunity may correspond to the same transport block. If a first indication is given, the first transmission opportunity may be associated with a first TCI 1450 and the second transmission opportunity may be associated with a If a second instruction is given, the first transmit opportunity may be associated with a second TCI 1450. If a third indication is given, the first transmit opportunity may be associated with the first TCI 1450 and the second transmit opportunity may be associated with the second TCI 1451. The opportunity may be associated with a second TCI 1451. If a fourth indication is given, the first transmit opportunity may be associated with a second TCI 1451 and a second transmit opportunity may be associated with the first TCI 1450.

[0392] An FDM scheme may be applied for the PDSCH 1403. The PDSCH 1403 may be received in two PDSCH transmission opportunities (first transmission opportunity and second transmission opportunity). For example, an FDM scheme (FDM scheme A) may be applied. , FDM scheme B) is applied, the PDSCH 1403 has two PDSCH transmission opportunities (first transmission opportunity and second transmission opportunity). The first and second transmit opportunities may be received at a frequency The PDSCH 1403 may not overlap in area. One transport block corresponding to the PDSCH 1403 may be received at the first transmission opportunity and the second transmission opportunity. The first and second transmission opportunities may correspond to the same transport block. The RV (Redundancy Version) for the first transmission opportunity may be different from the RV for the second transmission opportunity. If a first indication is given, the first transmission opportunity may be associated with a first TCI 1450, and the second transmission opportunity may correspond to the same transport block. The second transmit opportunity may be associated with the first TCI 1450. If a second indication is given, the first The transmit opportunity may be associated with the second TCI 1451, and the second transmit opportunity may be associated with the second TCI 1451. If a third indication is given, the first transmit opportunity may be associated with the first TCI 1450. Alternatively, the second transmit opportunity may be associated with a second TCI 1451. If a fourth indication is given, The first transmit opportunity may be associated with the second TCI 1451 and the second transmit opportunity may be associated with the first TCI 1450 .

[0393] An SDM technique may be applied for the PDSCH 1403. When an SDM technique is applied, a first TCI state 1450 may correspond to a first CDM group, and a second TCI state 1451 may correspond to a second CDM group. If a first indication is given, an SDM technique may not be applied for the PDSCH 1403. If a second indication is given, an SDM technique may not be applied for the PDSCH 1403. If a third indication is given and an SDM technique is applied, the first TCI state 1450 may correspond to a first CDM group, and the second TCI state 1451 may correspond to a second CDM group. If a fourth instruction is given and the SDM method is applied, In this case, the first TCI state 1450 may correspond to a second CDM group, and the second TCI state 1451 may correspond to a It may correspond to a first CDM group.

[0394] If the SDM method is configured to be applied for the PDSCH 1403 by a higher layer parameter and if a first instruction is given, the SDM method may not be applied. One of the first TCI state 1450 and the second TCI state 1451 may be applied to the PDSCH 1403. If the SDM method is configured to be applied for the PDSCH 1403 by a higher layer parameter, If the second instruction is given, the SDM technique may not be applied. Also, one of the first TCI state 1450 and the second TCI state 1451 may be applied to the PDSCH 1403. If it is configured that the SDM technique is applied for the PDSCH 1403, it may not be expected that the first instruction is given. If it is configured that the SDM technique is applied for the PDSCH 1403, it may not be expected that the second instruction is given.

[0395] An SFN technique may be applied for the PDSCH 1403. For example, when the SFN technique is applied, the same DMRS port may be transmitted (or received) from different panels simultaneously for the PDSCH 1403. When the SFN technique is applied for the PDSCH 1403, the DMRS port of the PDSCH 1403 may be DL-RS and QCL in a first TCI state 1450 and a second TCI state 1451. When a first instruction is given, If a second indication is given, the SFN technique may not be applied for the PDSCH 1403. If a second indication is given, the SFN technique may not be applied for the PDSCH 1403. If a third indication is given and the SFN technique is applied, the DMRS port of the PDSCH 1403 is in the first TCI state 1450 and the second TCI state 1451. If a fourth indication is given and the SFN approach is applied, the DMRS port of the PDSCH 1403 may be a DL-RS and a QCL in the first TCI state 1450 and the second TCI state 1451.

[0396] If the SFN method is configured to be applied for the PDSCH 1403 by a higher layer parameter and if a first instruction is given, the SFN method may not be applied. One of the first TCI state 1450 and the second TCI state 1451 may be applied to the PDSCH 1403. If the SFN method is configured to be applied for CH1403 by higher layer parameters, If the second instruction is given, the SFN technique may not be applied. Also, one of the first TCI state 1450 and the second TCI state 1451 may be applied to the PDSCH 1403. If it is configured that the SFN technique is applied for the PDSCH 1403, it may not be expected that the first instruction is given. If it is configured that the SFN technique is applied for the PDSCH 1403, it may not be expected that the second instruction is given.

[0397] Repetition may be applied for the PDSCH 1403. The terminal device 1 may receive the PDSCH 1403 over multiple slots. For example, the PDSCH 1403 transmitting the transport block may be received over multiple slots. The terminal device 1 may repeatedly receive a transport block (a transport block corresponding to the PDSCH 1403) over K consecutive slots. K may be the number of repetitions. K may be provided by the repetitionNumber. The fact that the repetitionNumber is provided for the PDSCH 1403 means that repetition is applied for the PDSCH 1403. It may be as follows.

[0398] If recursion applies for PDSCH1403 and the first instruction is given, The first TCI state 1450 may be associated with K consecutive slots. If the second instruction is given, the second TCI state 1451 is If repetition is applied for PDSCH 1403 and a third indication is given, first TCI state 1450 and second TCI state 1451 may be associated with K consecutive slots. For example, if K=2, the first TCI state 1450 may be applied to the first slot, and the second TCI state 1451 may be applied to the second slot. If K>2 and cyclic mapping is enabled, the first TCI state 1450 and the second TCI state 1451 may be applied to the first and second slots of K consecutive slots, respectively, and the same TCI state mapping pattern may continue for the remaining slots of the K consecutive slots. If K>2 and sequential mapping is enabled, the first TCI state 1450 may be applied to the first and second slots of K consecutive slots, and the second TCI state 1451 may be applied to the third and fourth slots of the K consecutive slots, and the same TCI state mapping pattern may continue for the remaining slots of the K consecutive slots. If repetition is applied for PDSCH 1403, and the fourth instruction Given a first TCI state 1450 and a second TCI state 1451, the first TCI state 1450 and the second TCI state 1451 are related to K consecutive slots. For example, if K=2, the second TCI state 1451 may be applied to the first slot, and the first TCI state 1450 may be applied to the second slot. If K>2 and cyclic mapping is enabled, the second TCI state 1451 and the first TCI state 1450 may be applied to the second slot. may be applied to the first and second slots of K consecutive slots, respectively, and If K>2 and sequential mapping is enabled, the second TCI state 1451 may be applied to the first and second slots of the K consecutive slots, and the first TCI state 1450 may be applied to the third and fourth slots of the K consecutive slots, and the same TCI state mapping pattern may be followed for the remaining slots of the K consecutive slots.

[0399] The fact that one or more TCI states are applied to the PDSCH depends on the DMRS port (DMRS antenna) of the PDSCH. When one or more TCI states are applied to the PDCCH, a DMRS port (DMRS antenna port) of the PDCCH may be DL-RS and QCL in one or more TCI states. When one or more TCI states are applied to the PDCCH, a DMRS port (DMRS antenna port) of the PDCCH may be DL-RS and QCL in one or more TCI states. When one or more TCI states are applied to the PDCCH, one or more TCI states may be applied to the CORESET for the PDCCH.

[0400] The TCI state applied to the PDCCH 1404 may be the activated TCI state 1401. That is, one or more TCI states to be applied to the PDCCH 1404 may be indicated by MAC. The TCI state to be applied to the PDCCH 1404 may be indicated TCI state 1402. That is, one or more TCI states to be applied to the PDCCH 1404 may be indicated by DCI. For example, If the number of indicated TCI states 1402 is 0, the activated TCI states 1401 may be applied to the PDCCH 1404 .

[0401] An SFN scheme may be applied for the PDCCH 1404. For example, when an SFN scheme is applied, the same DMRS port may be transmitted (or received) from different panels simultaneously for the PDCCH 1404. When an SFN scheme is applied for the PDCCH 1404, the DMRS port of the PDCCH 1404 may be DL-RS and QCL in the first TCI state 1450 and the second TCI state 1451. When an SFN scheme is applied for the PDCCH 1404, When the method is applied, the DMRS port of the PDCCH 1404 in the CORESET is in the first TCI state 1450 and the second TCI state 1451. If a first indication is given, an SFN scheme may not be applied for the PDCCH 1404. If a second indication is given, an SFN scheme may not be applied for the PDCCH 1404. If a third indication is given and an SFN scheme is applied, the DMRS port of the PDCCH 1404 may be a DL-RS and a QCL in the first TCI state 1450 and the second TCI state 1451. If a fourth indication is given and an SFN scheme is applied, the DMRS port of the PDCCH 1404 may be a DL-RS and a QCL in the first TCI state 1450 and the second TCI state 1451.

[0402] If the SFN method is configured to be applied for the PDCCH 1404 by a higher layer parameter and if the first instruction is given, the SFN method may not be applied. One of the first TCI state 1450 and the second TCI state 1451 may be applied to the PDCCH 1404. If the SFN technique is configured to be applied for the PDCCH 1404 by a higher layer parameter, If the second instruction is given, the SFN technique may not be applied. Also, one of the first TCI state 1450 and the second TCI state 1451 may be applied to the PDCCH 1404. If it is configured that the SFN technique is applied for the PDCCH 1404, it may not be expected that the first instruction is given. If it is configured that the SFN technique is applied for the PDCCH 1404, it may not be expected that the second instruction is given.

[0403] When the SFN method is applied for the PDCCH 1404, the first instruction for the PDCCH 1404 is shown. If the SFN technique is applied for the PDCCH 1404, the higher layer parameter indicating the second indication for the PDCCH 1404 is not expected to be configured. It may not be expected that the higher layer parameter indicating the first indication for the PDCCH 1404 is set. If the higher layer parameter indicating the second indication for the PDCCH 1404 is configured, it may not be expected that the SFN technique will be applied for the PDCCH 1404. If the higher layer parameter indicating the second indication for the PDCCH 1404 is configured, it may not be expected that the SFN technique will be applied for the PDCCH 1404.

[0404] Search space linking may be applied for the PDCCH 1404. For example, a first search space set and a second search space set for receiving the PDCCH 1404 may be linked. For example, the PDCCH 1404 reception may include a first PDCCH candidate and a second PDCCH candidate from the first search space set and the second search space set. The first search space set and the second search space set may be linked. If a search area link is applied, a first instruction may be given. If a search area link is applied, a second instruction may be given. If a search area link is applied, a third instruction may not be expected to be given. If a search area link is applied, a fourth instruction may not be expected to be given. If a search area link is applied, and the first instruction or the second instruction is given in the first CORESET, If the first instruction or the second instruction is given in the second CORESET, If a first search area set corresponding to a first CORESET and a second search area set corresponding to a second CORESET are linked, the first search area set corresponding to a first CORESET and the second search area set corresponding to a second CORESET may be linked. If a first instruction or a second instruction is given in one CORESET, and a third instruction or a fourth instruction is given in the second CORESET, The first search area set corresponding to the second CORESET and the second search area corresponding to the second CORESET are not linked. If a search area link is applied and the third index is found in the first CORESET, or if a fourth instruction is given, and a third instruction is given in the second CORESET, Or, if a fourth instruction is given, a first search area set corresponding to the first CORESET. The search area linking for the PDCCH 1404 is applied when the upper layer parameters are not linked in the search area set of the PDCCH 1404. The meter searchSpaceLinking may be set.

[0405] If a search area link is applied, and the first instruction in the first CORESET, or , if a second instruction is given, and a third instruction is given in the second CORESET, or If the fourth instruction is given, one of the first TCI state 1450 and the second TCI state 1451 may be applied to the second CORESET. If the search area link applies and the third instruction is given in the first CORESET, or if the fourth instruction is given and the fourth instruction is given in the second CORESET, one of the first TCI state 1450 and the second TCI state 1451 may be applied to the second CORESET. If a third or fourth instruction is given, one of the first TCI state 1450 and the second TCI state 1451 may apply to the first CORESET, and the first TCI state 1450 and the second TCI state One of the conditions 1451 may be applied to the second CORESET. If a search area link is applied, A first search area set corresponding to a first CORESET and a second search area set corresponding to a second CORESET may be linked.

[0406] The terminal device 1 is configured with a first PDCCH in which the first DCI is arranged and at least one CORESET. The terminal device 1 may include a receiving unit that receives the second PDCCH and the second PDCCH. The PDCCH may further include a transmitter configured to transmit a PUSCH scheduled by a second DCI arranged in the PDCCH. For example, it may be configured that an SFN scheme is applied for the second PDCCH. It may be configured that a search space link is applied for the second PDCCH. The first DCI may indicate a first TCI state and a second TCI state. When one of the first TCI state and the second TCI state is applied to one CORESET, the search space link is applied and the SFN scheme is applied. When both the first TCI state and the second TCI state are applied to one CORESET, the SFN scheme may be applied and the search space link may not be applied. Setting that the SFN scheme is applied may mean that the upper layer parameter sfnSchemePdcch is set. Setting that the search space link is applied may mean that the upper layer parameter sfnSchemePdcch for the second PDCCH is set. The upper layer parameter searchSpaceLinking may be set in the search space set. The first TCI state may be first TCI state 1450. The second TCI state may be second TCI state 1451. The second PDCCH may be PDCCH 1404. The TCI state applied to CORESET may be the TCI state applied to the PDCCH in CORESET. stomach.

[0407] If the SFN method is configured to be applied for the second PDCCH, the first TCI state and the second It may not be expected that one of the two TCI states is applied to one CORESET. If the SFN method is not configured to be applied to the second PDCCH, and if one of the first TCI state and the second TCI state is applied to one CORESET, the DMRS port of the second PDCCH is configured to be in the first TCI state. The DL-RS and QCL may be in one of the two TCI states and the second TCI state. is set to apply, and both the first TCI state and the second TCI state are If the SFN method is applied to the first CORESET, the DMRS port of the second PDCCH may be DL-RS and QCL in both the first TCI state and the second TCI state. It may not be expected that both the first TCI state and the second TCI state will apply to one CORESET.

[0408] The first TCI condition and / or the second TCI condition may apply to one CORESET. The first TCI state may be determined based on a higher layer parameter. If the higher layer parameter indicates a first indication, the first TCI state may be applied to one CORESET. If the higher layer parameter indicates a second indication, the first TCI state may be applied to one CORESET. If the higher layer parameter indicates a third indication, then the second TCI state may be applied to one CORESET. If the higher layer parameter indicates a third indication, then both the first TCI state and the second TCI state may be applied to one CORESET.

[0409] The terminal device 1 includes a receiving unit that receives a first PDCCH in which a first DCI is arranged, a second PDCCH in which a second DCI is arranged, and a PDSCH scheduled by the second DCI. It may be configured that the PDSCH-MTRP scheme is applied to the PDSCH. The PDSCH-MTRP scheme may be some or all of the SFN scheme, FDM scheme, TDM scheme, and SDM scheme. The first DCI may indicate a first TCI state and a second TCI state. Whether one or both of the first TCI state and the second TCI state apply to the PDSCH is determined based on the second DCI. The PDSCH-MTRP technique may be configured to be applied to the PDSCH. When one of the first TCI state and the second TCI state is applied to the PDSCH, the PDSCH-MTRP technique 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 technique may be applied to the PDSCH. Configuring that the PDSCH-MTRP technique is applied may mean configuring an upper layer parameter sfnSchemePdsch. Configuring that the PDSCH-MTRP technique is applied may mean configuring an upper layer parameter repetitionScheme.

[0410] It is not expected that either the first or second TCI state will 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.

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

[0412] Various aspects of the device according to one aspect of this embodiment will be described below.

[0413] (1) In order to achieve the above object, the aspects of the present invention employ the following means. That is, a first aspect of the present invention is a terminal device, comprising: a receiver that receives a first PDCCH in which a first DCI is arranged and a second PDCCH in at least one CORESET; and a transmitter that transmits a PUSCH scheduled by the second DCI arranged in the second PDCCH, wherein an SFN scheme is configured to be applied to the second PDCCH, a search space link is configured to be applied to the second PDCCH, and the first DCI is configured to be in a first TCI state. and a second TCI state, and if one of the first TCI state and the second TCI state is applied to the one CORESET, the search space link is applied and the SFN technique is not applied, and if both the first TCI state and the second TCI state are applied to the one CORESET, the SFN technique is applied and the search space link is not applied. Whether one or both of a first TCI state and the second TCI state are applied to the one CORESET is determined based on an upper layer parameter, and if the upper layer parameter indicates a first indication, the first TCI state is applied to the one CORESET, and if the upper layer parameter indicates a second indication, If the upper layer parameter indicates a third indication, the second TCI state applies to the one CORESET, and if the upper layer parameter indicates a third indication, both the first TCI state and the second TCI state apply to the one CORESET. Applies to one CORESET.

[0414] (2) A second aspect of the present invention is a terminal device, comprising: a first PDCCH in which a first DCI is arranged; and a second PDCCH in at least one CORESET; and a transmitter that transmits a PUSCH scheduled by a second DCI arranged on the second PDCCH, wherein the first DCI indicates a first TCI state and a second TCI state, and when an SFN scheme is configured to be applied for the second PDCCH, the first TCI state and the second TCI state are transmitted. It is not expected that one of the conditions will be applied to the one CORESET, and the SFN method will be applied. If the first TCI state and the second TCI state are not configured to be the same, and if one of the first TCI state and the second TCI state is applied to the one CORESET, the DMRS port of the second PDCCH is configured to be the same as the one DL-RS and QCL and if the SFN scheme is configured to be applied, and if both the first TCI state and the second TCI state are applied to the one CORESET, the DMRS port If the DL-RS and QCL are both DL-RS and QCL and the SFN method is not configured to be applied, it is not expected that both the first TCI state and the second TCI state will be applied to the one CORESET. The application of one or both of the first TCI state and the second TCI state to the one CORESET is determined based on an upper layer parameter, and if the upper layer parameter indicates a first indication, the first TCI state is applied to the one CORESET, and if the upper layer parameter indicates a first indication, the first TCI state is applied to the one CORESET. indicates a second indication, the second TCI state is applied to the one CORESET, and when the upper 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 device, comprising: a transmitter that transmits a first PDCCH in which a first DCI is arranged and a second PDCCH in at least one CORESET; a receiving unit for receiving a PUSCH scheduled by a second DCI arranged on the PDCCH; the first DCI indicates a first TCI state and a second TCI state, and when an SFN scheme is configured to be applied for the second PDCCH, one of the first TCI state and the second TCI state is not expected to be applied to the one CORESET, and when the SFN scheme is not configured to be applied and one of the first TCI state and the second TCI state is applied to the one CORESET, the DMRS ports of the second PDCCH are the one DL-RS and QCL, and when the SFN scheme is configured to be applied and the first TCI state and If both of the second TCI states apply to the one CORESET, the DMRS port If both DL-RS and QCL are configured and the SFN method is not applied, the first It is not expected that both the first TCI state and the second TCI state are applied to the one CORESET. Whether one or both of the first TCI state and the second TCI state are applied to the one CORESET is determined based on a higher layer parameter, and if the higher layer parameter indicates a first indication, the first TCI state is applied to the one CORESET, and if the higher layer parameter indicates a second indication, the first TCI state is applied to the one CORESET. If the upper layer parameter indicates a second indication, the second TCI state is applied to the one CORESET, and if the upper 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, comprising: a first PDCCH in which a first DCI is arranged; a second PDCCH in which a second DCI is arranged; and a PDCCH scheduled by the second DCI. a receiving unit for receiving a PDSCH to be transmitted; and a receiving unit for receiving a PDSCH to be transmitted; wherein a PDSCH-MTRP scheme is configured to be applied to the PDSCH, the PDSCH-MTRP scheme being some or all of an SFN scheme, an FDM scheme, a TDM scheme, and an SDM scheme; and the first DCI indicates a first TCI state and a second TCI state; The first TCI state and / or the second TCI state is applied to a PDSCH, The TCI state is determined based on the second DCI, and one of the first TCI state and the second TCI state is determined based on the second DCI. When the second DCI is applied to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH, and 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. and if the one field indicates a first indication, the first TCI state is applied to the PDSCH, and if the one field indicates a second indication, the second TCI state is applied to the PDSCH. If the state is applied to the PDSCH and the one field indicates a third indication, the first TC Both the I state and the second TCI state apply to the PDSCH.

[0417] (5) A fifth aspect of the present invention is a terminal device, comprising: a first PDCCH in which a first DCI is arranged; a second PDCCH in which a second DCI is arranged; and a PDCCH scheduled by the second DCI. a receiving unit for receiving a PDSCH to be transmitted; and a receiving unit for receiving a PDSCH to be transmitted; wherein a PDSCH-MTRP scheme is configured to be applied to the PDSCH, the PDSCH-MTRP scheme being some or all of an SFN scheme, an FDM scheme, a TDM scheme, and an SDM scheme; and the first DCI indicates a first TCI state and a second TCI state; It is 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 technique is applied to the PDSCH. The second DCI includes one field different from a TCI field, and when the one field indicates a first indication, the first TCI state is applied to the PDSCH, and when the one field indicates a second indication, the PDSCH-MTRP technique is applied to the PDSCH. If two TCI states apply to the PDSCH and the one field indicates a third indication, Both the first TCI state and the second TCI state are applied to the PDSCH.

[0418] (6) A sixth aspect of the present invention is a base station device, comprising: a first PDCCH in which a first DCI is arranged; a second PDCCH in which a second DCI is arranged; and scheduling based on the second DCI. and a transmitter unit for transmitting a PDSCH to be transmitted, wherein a PDSCH-MTRP scheme is configured to be applied to the PDSCH, the PDSCH-MTRP scheme being part or all of an SFN scheme, an FDM scheme, a TDM scheme, and an SDM scheme, and 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. , determined based on the second DCI, and one of the first TCI state and the second TCI state is When the second DCI is applied to the PDSCH, the PDSCH-MTRP method is not applied to the PDSCH, and 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. If the one field indicates a first indication, the first TCI state is applied to the PDSCH, and if the one field indicates a second indication, the second TCI state is applied to the PDSCH. If a state is applied to the PDSCH and the one field indicates a third indication, both the first TCI state and the second TCI state are applied to the PDSCH.

[0419] The programs that run on the base station device 3 and terminal device 1 according to the present invention may be programs that control a CPU (Central Processing Unit) or the like (programs that make a computer function) so as to realize the functions of the above-described embodiments according to the present invention. Information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing. The data is then stored in various ROMs such as Flash ROM (Read Only Memory) or HDD (Hard Disk Drive), and is read, modified, and written by the CPU as needed.

[0420] Note that the terminal device 1 and part of the base station device 3 in the above-described embodiment may be realized by a computer. In this case, a program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed to realize the function.

[0421] The term "computer system" used here refers to a computer system built into the terminal device 1 or base station device 3, and includes hardware such as an OS and peripheral devices. Also, the term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into the computer system.

[0422] Furthermore, a "computer-readable recording medium" refers to a medium that can be read in a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. The program may also include those that dynamically store programs, or those that store programs for a certain period of time, such as volatile memory within a computer system that serves as a server or client in that case. The program may also be one that realizes part of the functions described above, or may be one that can realize the functions described above in combination with a program already stored in the computer system.

[0423] Furthermore, the base station device 3 in the above-described embodiment can also be realized as a collection (device group) consisting of multiple devices. Each of the devices constituting the device group may have some or all of the functions or functional blocks of the base station device 3 according to the above-described embodiment. It is sufficient for the device group to have all of the functions or functional blocks of the base station device 3. Furthermore, the terminal device 1 according to the above-described embodiment can also communicate with the base station device as a collection.

[0424] Furthermore, the base station device 3 in the above-described embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or an NG-RAN (NextGen RAN, NR RAN). Furthermore, the base station device 3 in the above-described embodiment may be an eNodeB and / or a gNB. It may have some or all of the functions of its higher-level node.

[0425] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiments may be realized as an LSI, which is typically an integrated circuit, or may be realized as a chipset. Each functional block of the terminal device 1 and the base station device 3 may be individually integrated into a chip, or part or all of them may be integrated into a chip. The integrated circuit method is not limited to LSI, but may be a dedicated circuit, Alternatively, it may be realized by a general-purpose processor. In addition, with the advancement of semiconductor technology, it is expected that LSI will replace the general-purpose processor. When integrated circuit technology emerges, it is also possible to use integrated circuits based on that technology.

[0426] Furthermore, in the above-described embodiment, a terminal device is described as an example of a communication device, but the present invention is not limited to this and can also be applied to terminal devices or communication devices such as stationary or non-movable electronic devices installed indoors or outdoors, for example, AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other household appliances.

[0427] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the invention. Furthermore, the present invention is susceptible to various modifications within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, configurations in which elements described in the above embodiments are substituted with elements that achieve the same effect are also included. [Explanation of symbols]

[0428] 1(1A, 1B, 1C) Terminal equipment 3 Base station equipment 10, 30 Radio transmitter / receiver 10a, 30a Radio transmitter 10b, 30b Wireless receiver 11, 31 Antenna section 12, 32 RF section 13, 33 Baseband section 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 Carriers 301 Primary Cell 302, 303 Secondary Cell 700 Set of resource elements for PSS 710, 711, 712, 713 Set of resource elements for PBCH and DMRS for PBCH 720 Set of Resource Elements for SSS 3000 points 3001, 3002 Resource Grid 3003, 3004 BWP 3011, 3012, 3013, 3014 offset 3100, 3200 common resource block set 1400 TCI state set 1401 Activated TCI State 1402 TCI status indicated 1403 PDSCH 1404 PDCCH 1450, 1451 TCI condition

Claims

1. A first PDCCH in which the first DCI is arranged and a second PDCCH in at least one CORESET a receiving unit for receiving the signal; Transmitting a PUSCH scheduled by a second DCI arranged in the second PDCCH. a transmitting unit for transmitting the It is configured that an SFN scheme is applied to the second PDCCH; It is configured that a search space link is applied for the second PDCCH; the first DCI indicates a first TCI state and a second TCI state; When one of the first TCI state and the second TCI state is applied to the one CORESET, the search area link is applied and the SFN method is not applied; If both the first TCI state and the second TCI state are applied to the one CORESET, the SFN method is applied and the search area link is not applied. Terminal device.

2. A first PDCCH in which the first DCI is arranged and a second PDCCH in at least one CORESET a receiving unit for receiving the signal; Transmitting a PUSCH scheduled by a second DCI arranged in the second PDCCH. a transmitting unit for transmitting the the first DCI indicates a first TCI state and a second TCI state; When the SFN scheme is configured to be applied to the second PDCCH, the first TCI and the second TCI state is not expected to apply to the one CORESET; When the SFN scheme is not configured to be applied and when one of the first TCI state and the second TCI state is applied to the one CORESET, the DMRS port of the second PDCCH is the one DL-RS and QCL; When the SFN scheme is configured to be applied, and when both the first TCI state and the second TCI state are applied to the one CORESET, the DMRS port is both the DL-RS and QCL; If the SFN method is not configured to be applied, it is not expected that both the first TCI state and the second TCI state are applied to the one CORESET. Terminal device.

3. determining whether one or both of the first TCI state and the second TCI state are to be applied to the one CORESET based on higher layer parameters; If the higher layer parameter indicates a first indication, the first TCI state is applied to the one CORESET; If the higher layer parameter indicates a second indication, the second TCI state is applied to the one CORESET; If the higher layer parameter indicates a third indication, both the first TCI state and the second TCI state apply to the one CORESET.

3. The terminal device according to claim 1 or 2.

4. A first PDCCH in which the first DCI is arranged and a second PDCCH in at least one CORESET a transmitting unit that transmits the receiving a PUSCH scheduled by a second DCI arranged on the second PDCCH; a receiving unit for receiving the signal, the first DCI indicates a first TCI state and a second TCI state; When the SFN scheme is configured to be applied to the second PDCCH, the first TCI and the second TCI state is not expected to apply to the one CORESET; If the SFN method is not set to be applied, and the first TCI state and the When one of two TCI states is applied to the one CORESET, the DMRS ports of the second PDCCH are the one DL-RS and QCL; When the SFN scheme is configured to be applied, and when both the first TCI state and the second TCI state are applied to the one CORESET, the DMRS port is both the DL-RS and QCL; If the SFN method is not configured to be applied, it is not expected that both the first TCI state and the second TCI state are applied to the one CORESET. Base station equipment.

5. determining whether one or both of the first TCI state and the second TCI state are to be applied to the one CORESET based on higher layer parameters; If the higher layer parameter indicates a first indication, the first TCI state is applied to the one CORESET; If the higher layer parameter indicates a second indication, the second TCI state is applied to the one CORESET; If the higher layer parameter indicates a third indication, both the first TCI state and the second TCI state apply to the one CORESET. The base station device according to claim 4.

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