Terminal device, base station device, and communication method

Abstract

To provide a terminal device and base station device that perform communication efficiently.SOLUTION: A wireless communication system includes a terminal device comprising a reception section for receiving N CSI-RSs and a transmission section for transmitting a CSI. CSI resource setting for the N CSI-RSs links to CSI report setting for the CSI. In the case that a frequency difference is set to reporting amount setting in the CSI report setting, each of the N CSI-RSs is a CSI-RS resource set and the CSI is composed of at least N-1 frequency difference indexes. In the case that a phase difference is set to the reporting amount setting, each of the N CSI-RSs is a CSI-RS resource and the CSI is composed of at least N-1 phase difference indexes.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a terminal device, a base station device, and a communication method. [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, non-patent document 3, and non-patent document 4). [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 [Non-patent document 3] “Release 18 package summary”, RP-213469, RAN chairman, RAN1 chairman, RAN2 chairman, RAN3 chairman, 3GPP TSG RAN Meeting #94-e, 6th ― 17th December, 2021 [Non-patent document 4] “Summary for RAN Rel-19 Package: RAN1 / 2 / 3-led”, RP-232745,RAN chair, 3GPP TSG RAN Meeting #102, 11th ― 15th December, 2023 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 for receiving N CSI-RSs; and a transmitter for transmitting CSI, wherein CSI resource configuration for the N CSI-RSs is and when a reporting amount setting in the CSI reporting setting is set to a frequency difference, each of the N CSI-RSs is a CSI-RS resource set; Furthermore, the CSI is configured with at least N-1 frequency difference indexes, and when a phase difference is set in the reporting amount configuration, each of the N CSI-RSs is a CSI-RS resource; or The CSI is composed of at least N-1 phase difference indexes.

[0008] (2) A second aspect of the present invention is a base station device, comprising: a transmitter for transmitting N CSI-RSs; a receiving unit for receiving CSI, and a CSI resource configuration for the N CSI-RSs is , linked to a CSI reporting configuration for the CSI, and a reporting quantity setting in the CSI reporting configuration When the frequency difference is set to a constant value, each of the N CSI-RSs is assigned to a CSI-RS resource set. and the CSI is configured with at least N-1 frequency difference indexes, and when a phase difference is set in the reporting amount configuration, each of the N CSI-RSs is a CSI-RS resource. and the CSI is composed of at least N-1 phase difference indexes.

[0009] (3) A third aspect of the present invention is a communication method for a terminal device, the method comprising: receiving N CSI-RSs; and transmitting CSI, The source configuration is linked to the CSI report configuration for the CSI, and in the CSI report configuration When the frequency difference is set in the reporting amount setting in the CSI-RS, each of the N CSI-RSs is When the reporting amount setting is set to a phase difference, each of the N CSI-RSs is a CSI-RS resource, and the CSI is configured with at least N-1 phase difference indexes. do. [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 illustrating an example of a CSI report according to an 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,μsymb 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 2A, for example, when 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 ) Δf max = 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 slotsymb N subframe,μ slot The uplink radio frame (uplink frame, uplink timing) is T shy of the downlink radio frame (downlink frame, downlink timing). TA You may move forward only by T TA may be referred to as a timing advance.

[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 = 14. In addition, in the setting of the extended CP, N slot 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] Of the common resource block set 3100, the common resource block that includes the point 3000 (the black block in the common resource block set 3100 in FIG. 3) is also called the reference point 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,μgrid1,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 resource grid 3002 is denoted by the number of common resource blocks for the resource interval μ. The resource grid 3002 is denoted by 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 ksc 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 nμ 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, and a symbol may correspond to an OFDM symbol. Alternatively, a symbol may correspond to a resource block unit. Alternatively, 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 of type A (with respect to) QCLs if a first large-scale characteristic 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. A QCL is a type B QCL if it has a symbol A second large-scale characteristic of a channel through which symbols are transmitted at one antenna port may be estimable from a channel through which symbols are transmitted at another antenna port. The fact that two antenna ports are (with respect to) type C QCLs may mean that a third large-scale characteristic of a channel through which symbols are transmitted at one antenna port may be estimable from a channel through which symbols are transmitted at another antenna port. The fact that two antenna ports are (with respect to) type D QCLs may mean that a fourth large-scale characteristic of a channel through which symbols are transmitted at one antenna port may be estimable 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 Doppler shift and mean delay. The fourth large-scale characteristic may include spatial reception parameters (spatial direction information, beam information). The antenna ports for DMRS may be DMRS ports. The antenna ports for PTRS may be PTRS ports. The antenna port associated with the PTRS may be a PTRS port. The port may be an SRS port. The antenna port for DMRS is 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 a method of performing communication using a plurality of aggregated component carriers. The carrier aggregation may be a method of performing communication using a plurality of aggregated downlink component carriers. Furthermore, carrier aggregation may involve communication using multiple 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 for the PDSCH DMRS. For example, the radio transmitter 30a may generate and transmit a baseband signal for the PDCCH DMRS. For example, the radio transmitter 30a may generate and transmit a baseband signal for the CSI-RS. For example, the radio transmitter 30a may generate and transmit a baseband signal for 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. For example, the higher layer parameters may be set based on a received RRC message. For example, receiving higher layer parameters may involve updating the parameters based on received RRC messages. It may also be to set the parameter.

[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 transmission / reception unit 30 (or the radio transmission 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 converts the received signal into a digital signal and transmits it via the antenna unit 31. The RF unit 32 may also have a function to control transmission power. The RF unit 32 is also 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] The term "serving cell group" (cell group) refers to at least an MCG and an SCG. A serving cell group may include one or more serving cells (or component carriers). One or more sub-cells included in a serving cell group may be allocated to one or more sub-cells. The serving cells (or component carriers) 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. The terminal device 1 does not need to transmit the PUCCH and the 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 The uplink BWP does not have to be set as the active uplink BWP. Thus, at any given time, one uplink BWP may be active.

[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. For example, if higher layer parameters are set, The task may be to set parameters based on received RRC messages. For example, receiving higher layer parameters may involve determining the parameters based on received RRC messages. It may be to set a parameter.

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

[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] DMRS for PUSCH (DMRS related to PUSCH, DMRS included in PUSCH, DMRS corresponding to PUSCH) The set of antenna ports for the RS 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 bits are 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 terminal device 1 does not support the BWP switching function by 0_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 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 the loop 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 is Carrier indicator field included in DCI format 0_1 ​​used for The number of bits in may be 0 (or the carrier indicator field may not be included in DCI format 0_1 ​​used for scheduling the PUSCH allocated to the certain serving cell group).

[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 the target coding rate 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 for scheduling the PDSCH without , DCI format 1_1 used for PDSCH scheduling and BWP format 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 in may be 0 (or the carrier indicator field may not be included in DCI format 1_1 used for scheduling the PDSCH allocated to the certain serving cell group).

[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 parameters included in MAC CE are transmitted by a 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, SS burst set window, or DRS transmission window (Discovery Reference Signal transmission window). The 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 (random access procedure) is a procedure that includes at least some or all of Message 1, Message 2, Message 3, and Message 4. The random access procedure may be triggered in response to a request for PRACH transmission by a higher layer parameter or a PDCCH order.

[0198] Message 1 is a procedure for transmitting a PRACH by the terminal device 1. The terminal device 1 transmits a random access preamble on the PRACH as message 1. The terminal device 1 transmits the PRACH on one PRACH opportunity selected from one or more PRACH opportunities based at least on the index of the SS / PBCH block candidate detected based on the cell search. Each PRACH opportunity is defined based on at least time and frequency domain resources. It is justified.

[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] The terminal device 1 may attempt to detect DCI format 1_0 with a CRC scrambled with RA-RNTI. Message 2 is a procedure in which the terminal device 1 attempts to detect DCI format 1_0 with a CRC (Cyclic Redundancy Check) scrambled with RA-RNTI (Random Access - Radio Network Temporary Identifier). The terminal device 1 may perform a cell search. Control given based on MIB included in PBCH included in SS / PBCH block detected based on The terminal device 1 attempts to detect a PDCCH including the DCI format in resources indicated based on the settings of the resource set and the search space set. Message 2 is also referred to as a random access response (RAR). The terminal device 1 may receive the random access response (or a random access response message) accompanied by the PDCCH / PDSCH as a message.

[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 Type 0 PDCCH common search space set, a Type 0a PDCCH common search space set, a Type 1 PDCCH common search space set, a Type 2 PDCCH common search space set, a Type 3 PDCCH common search space set, and / or a part or a 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 (included 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, the monitoring offset of the search area set 93 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. An uplink grant for scheduling is configured for each transmission period of the PUSCH. When the PUSCH is scheduled by the uplink DCI 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] The PDCCH configuration may include two different CORESET pool indices. For example, two CORESET pool index values ​​(0 and 1) may be provided. For example, two CORESET pool index values ​​may be provided for the First CORESET and the Second CORESET. PDCCH The configuration may be a PDCCH-Config.

[0236] PDSCH-Config may be a dedicated higher layer parameter. You may set parameters for this purpose.

[0237] 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.

[0238] 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. One serving cell may be configured with two TRPs for PDSCH, PDCCH, PUSCH, and PUCCH for the terminal device 1. may be scheduled.

[0239] In Multi-TRP, one of the operation modes of single-DCI and multi-DCI may be used. In Multi-TRP, uplink and downlink control may be completed in the MAC layer and the physical layer. In Multi-TRP, downlink control may be completed in the MAC layer and the physical layer. In Single-DCI mode, the terminal device 1 is scheduled by the same DCI for multiple TRPs. In the multi-DCI mode, the terminal device 1 may be scheduled by independent DCI from each TRP.

[0240] The PDCCH in Multi-TRP supports two modes: PDCCH repetition and SFN (Single Frequency Noise). In the two modes, the terminal device 1 may receive two PDCCH transmissions, and the PDCCH transmissions may carry the same DCI. In PDCCH repetition, the terminal device 1 may receive two PDCCH transmissions carrying the same DCI from two linked search spaces associated with different CORESETs. In SFN-based PDCCH transmission, the terminal device 1 may receive two PDCCH transmissions carrying the same DCI from one search space / CORESET using different TCI states.

[0241] For PUSCH / PUCCH repetition in Multi-TRP, the indication in Single-DCI or RRC According to the instructions in the grant set by the UE 1, the terminal device 1 may perform PUSCH transmission of the same content for the Multi-TRP.

[0242] In inter-cell Multi-TRP and Multi-DCI modes, one or more TCI states may be associated with an SSB with an additional PCI index. An activated TCI state may be associated with at most one additional PCI index. The additional PCI index may be a PCI (Physical Cell ID) different from that of the serving cell.

[0243] When the unified TCI state is configured and the multi-DCI mode is configured, the DMRS port for the first PDSCH reception may be the first reference signal and the QCL. , may be scheduled by the DCI format provided by the PDCCH reception in the first CORESETs. The first reference signal may be provided by the "indicated TCI-State" corresponding to the first CORESETs. When the unified TCI state is set, and when multi-DCI When the mode is configured, the DMRS port for the second PDSCH reception may be the second reference signal and the QCL. The second PDSCH reception may be scheduled according to the DCI format provided by the PDCCH reception in the second CORESETs. The second reference signal may be the second The fact that multi-DCI mode is configured may be provided by the CORESET pooling for the first CORESETs in one BWP. The following may be some or all of: providing a CORESET Pool Index 0 for the first CORESET in one BWP, providing a CORESET Pool Index 1 for the second CORESET in one BWP, and providing followUnifiedTCI-State for the first CORESET and the second CORESET.

[0244] When multi-DCI mode is configured, the MAC CE activation command for the first CORESET is If multi-DCI mode is configured, the MAC CE activation command for the second CORESETs shall include the second CORESET pool index. Also, when the inter-cell Multi-TRP mode is configured, the The "activated TCI state" may be related to the physical cell ID from the serving cell (e.g., ServingCellConfigCommon), and the "activated TCI state" for the second CORESETs may be associated with a physical cell ID from an additional PCI index (e.g., AdditionalPCI). Configuring the inter-cell Multi-TRP mode may be configuring SSB_MTC_AdditionalPCI. Configuring the inter-cell Multi-TRP mode may be configuring an additional PCI index. Configuring the multi-DCI mode may be configuring a first CORESET and a second CORESET. For two CORESETs two CORESET pool index values ​​0 and 1 may be provided.

[0245] Either or both of the terminal device 1 and the base station device 3 may form a beam (beam form). For example, one or both of the terminal device 1 and the base station device 3 may be beamforming. For example, the terminal device 1 may transmit radio waves (electromagnetic waves) in a specific spatial direction by using a timing signal. and / or the base station device 3 transmits radio waves to a specific area by beamforming. For transmitting and / or receiving radio waves, one or more A plurality of antennas may be provided and used. A directional radio wave may be called a beam. Information related to a beam may be called beam information. For example, For example, the beam information may be a specific spatial direction. For example, the beam information may be the direction of arrival of radio waves. The beam information may be a TCI status. The beam information may be an uplink link. The beam information may be a link transmit spatial filter. The beam information may be an SRS resource indication. The beam information may be QCL-based or QCL-related.

[0246] The terminal device 1 may receive the PDSCH. The base station device 3 may transmit the PDSCH. One transmission scheme may be defined for the PDSCH. One transmission scheme may be used for all PDSCH transmissions.

[0247] The terminal device 1 may perform reception in the PDSCH. The base station device 3 may perform transmission in the PDSCH. One transmission method may be transmission method 1. In transmission method 1, it may be assumed that transmission in the PDSCH is performed in a maximum of eight layers. Each layer may be mapped to one or more antenna ports. The one or more antenna ports may be assigned to an antenna port. For example, if an extended CSI port is not configured, one or more antenna ports may be some or all of antenna ports 1000-1023. For example, if an extended CSI port is configured, one or more antenna ports may be some or all of antenna ports 1000-1127.

[0248] The terminal device 1 may be scheduled to receive the PDSCH. For example, the terminal device 1 may be scheduled to receive the PDSCH by DCI. The PDSCH reception may be scheduled by a DCI format in the PDCCH. The PDSCH may be scheduled in a DCI format. The terminal device 1 may receive the PDSCH by scheduling grant. If a scheduling grant is received, Downlink resource allocation may be used.

[0249] 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.

[0250] Each TCI-State has parameters for setting up a QCL (Quasi co-location relationship). The QCL relationship may include a relationship between one or two downlink reference signals (downlink physical signals) and a DMRS (DMRS port) of a PDSCH. In relation to the downlink reference signal (downlink physical signal) and the DMRS (DMRS port) of the PDCCH The QCL relationship may be one or two downlink reference signals (downlink physical signals). The relationship may be one CSI-RS resource (CSI-RS port) and another CSI-RS resource. The QCL relationship between channel / signal A and channel / signal B may represent that channel / signal A is QCL with channel / signal B.

[0251] The QCL relationship is either one or both of the upper layer parameters qcl-Type1 and the upper layer parameters qcl-Type2. 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.

[0252] One list may be set by the higher layer parameter dlOrJointTCI-StateList. For example, one list may be configured in the higher layer parameter PDSCH-Config. One list may include up to 128 higher layer parameters TCI-State. The TCI-State parameter may be a list of up to 128 higher layer parameters. One list may be configured to provide one reference signal. The higher layer parameter TCI-State may be configured to provide one reference signal. One reference signal may be a DMRS for PDSCH and a PDCCH. One reference signal may be a reference signal for QCL for DMRS. One reference signal may be a reference signal for CSI-RS. One list may be configured to provide one reference. The higher layer parameter TCI-state may be configured to provide one reference. One reference may be a reference for the uplink transmit spatial filter (UL TX spatial filter). The uplink transmit spatial filter may be used for the PUSCH, the PUCCH, and the SRS. That is, one reference may be provided for determining the uplink transmit spatial filter for the PUSCH, the PUCCH, and the SRS. The TCI-State may be referred to as the DL / Joint TCI state or the unified TCI state. Setting the higher layer parameter dlOrJointTCI-StateList indicates that the unified TCI state is set. Setting the upper layer parameter dlOrJointTCI-StateList may result in the unified TCI state being set.

[0253] TCI-State (e.g., upper layer parameters TCI-State) and TCI-UL-State (e.g., upper layer parameters TCI-UL-State) The layer parameter TCI-UL-State may be configured in one BWP of one component carrier. If TCI-State is not configured or TCI-UL-State is not configured in one BWP, In this case, the terminal device 1 sets the TCI-State or the TCI-UL-State from the reference BWP. TCI-UL-State may also be called UL TCI State or Unified TCI State. Setting ul-TCI-StateList means setting the unified TCI state. good.

[0254] 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 one of tci-StatesToAddModList, SpatialRelationInfo, and PUCCH-SpatialRelationInfo. The second higher layer parameter may be one of dl-OrJointTCI-StateList and TCI-UL-StateList. If tci-StatesToAddModList is configured for any component carrier in a list, a second higher layer parameter may not be configured for any component carrier in the same band in the list. The list may be configured with the higher layer parameter simultaneousTCI-UpdateList1, the higher layer parameter simultaneousTCI-UpdateList2, the higher layer parameter simultaneousSpatial-UpdatedList1, or Alternatively, it may be set by the upper layer parameter simultaneousSpatial-UpdatedList2.

[0255] 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 involve one TCI state for downlink channels / signals and / or one TCI state for uplink channels / signals. The activation command may be used to map up to eight sets of TCI states to codepoints of the DCI field 'Transmission Configuration Indication'. Each set may contain up to two TCI states for uplink and downlink channels / signals. Activation Command This may be used to map up to two TCI states for downlink channels / signals and up to two TCI states for uplink channels / signals to codepoints in the DCI field 'Transmission Configuration Indication'. The TCI state for an uplink channel / signal may be referred to as a DL TCI state. The state may be referred to as the UL TCI state. The downlink channels / signals include PDSCH, PDCCH, The uplink channel / signal may be a part or all of the PUSCH, the PUCCH, and the SRS. The DCI (DCI format) may be composed of one or more DCI fields. For example, the DCI (DCI format) may be composed of a TCI field ('Transmission Configuration Indication' field).

[0256] 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.

[0257] The Activation command specifies the DL / Joint TCI state and / or the UL TCI state in one TCI codepoint (code of the DCI field 'Transmission Configuration Indication'). When mapping to a DL / Joint TCI state, the terminal device 1 may apply one or both of the indicated DL / Joint TCI state and the indicated UL TCI state.

[0258] The terminal device 1 provides the indicated DL / Joint TCI state or the indicated UL TCI state. The DCI format may not be accompanied by a downlink assignment. For example, if the DCI format is not accompanied by a downlink assignment, The terminal device 1 determines that the CS-RNTI is used to scramble the CRC for the DCI, that the RV (Redundancy version) is all 1, that the MCS is all 1, and that the NDI is 0. It may be assumed that all 0's are set for FDRA type 0 and all 1's are set for FDRA type 1.

[0259] Terminal device 1 may receive upper layer configuration. When terminal device 1 is in the "TCI state to be configured" After receiving the higher layer configuration, and the “configured TCI state” is changed to one “indicated TCI state” Before the "indicated TCI state" is applied, the terminal device 1 may assume that the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS to which the "indicated TCI state" is applied are the SS / PBCH block and the QCL. The setting of the higher layer parameter DLorJoint-TCIStateList means that the "set TCI state" is applied. Setting the "TCI state" may mean that a unified TCI state is set. Setting the upper layer parameter DLorJoint-TCIStateList may mean that a unified TCI state is set. Setting the "TCI state to set" may mean that a unified TCI state is set. DLorJoint-TCIStateList may be accompanied by multiple upper layer parameters TCI-State.

[0260] After the terminal device 1 receives the first higher layer configuration of the "TCI state to be set" and before one "indicated TCI state" is applied from the "TCI state to be set", the terminal device 1 may assume that the first uplink transmit spatial filter for the PUSCH, PUCCH, and SRS to which the "indicated TCI state" is applied is the same as the second uplink transmit spatial filter. The second uplink transmit spatial filter may be an uplink transmit spatial filter for PUSCH transmission scheduled by a random access response grant in the initial access procedure. Setting the higher layer parameter ul-TCI-StateList may mean that the "TCI state to be set" is set. Setting the higher layer parameter ul-TCI-StateList means that a unified TCI state is set. Setting "TCI state to be set" may mean setting a unified TCI state. ul-TCI-StateList contains multiple upper layer parameters TCI-State. It may be accompanied.

[0261] Terminal device 1 may receive upper layer configuration. When terminal device 1 is in the "TCI state to be configured" After receiving a higher layer configuration as part of a synchronized reconfiguration, and the TCI state to be set Before one of the "indicated TCI states" is applied, the indicated TCI state is applied. The DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS are the SS / PBCH block or the CSI-RS The resource and QCL may be, for example, an SS / PBCH block or a CSI-RS resource, which may be identified in a random access procedure initiated by a synchronized reconfiguration.

[0262] Terminal device 1 may receive upper layer configuration. When terminal device 1 is in the "TCI state to be configured" After receiving a higher layer configuration as part of a synchronized reconfiguration, and the TCI state to be set Before one of the "indicated TCI states" is applied, the indicated TCI state is applied. The first uplink transmit spatial filter for the PUSCH, PUCCH, and SRS is a second The second uplink transmit spatial filter may be assumed to be the same as the uplink transmit spatial filter for PUSCH transmission scheduled by a random access response grant (RAR UL grant) in the random access procedure. The second uplink transmit spatial filter may be an uplink transmit spatial filter for PUSCH transmission scheduled by a random access response grant in a random access procedure initiated by reconfiguration with synchronization.

[0263] When the terminal device 1 receives a "TCI state to be set" configuration with one TCI state, the terminal device 1 may obtain a QCL assumption from the TCI state to be set. The TCI state to be set may be a TCI state for CSI-RS, DMRS of PDSCH, and DMRS of PDCCH to which the indicated TCI state applies. The TCI state to be set may be an upper layer parameter dl-OrJointTCI-StateList.

[0264] When the terminal device 1 receives a "TCI state to be set" configuration with one TCI state, the terminal device 1 may determine an uplink transmit spatial filter from the TCI state to be set. The TCI state to be set may be a TCI state for PUSCH, PUCCH, and SRS to which the indicated TCI state applies. The TCI state to be set may be an upper layer parameter dl-OrJointTCI-StateList or ul-TCI-StateList.

[0265] When the unified TCI state is set, and when the terminal device 1 transmits the first channel, and when the first "instructed TCI state" is different from the second "instructed TCI state," the first "instructed TCI state" may be applied from the first slot. The first channel may be a PUCCH with HARQ-ACK information or a PUSCH with HARQ-ACK information. HARQ-ACK The information conveys a TCI State indication without a downlink assignment. The HARQ-ACK information may be HARQ-ACK information corresponding to a DCI that carries a TCI state indication. The HARQ-ACK information may be HARQ-ACK information corresponding to a PDSCH that is scheduled by a DCI that carries a TCI state indication. The second indicated TCI state may be indicated before (before) the first indicated TCI state. The first slot may be the first slot at least beamAppTime symbols after the last OFDM symbol of the first channel. BeamAppTime may be the number of OFDM symbols. BeamAppTime may be set by higher layer parameters. BeamAppTime may be determined by terminal capabilities. The indicated TCI state may be the indicated TCI-State or the indicated TCI-UL-State.

[0266] When multi-DCI mode is set, the terminal device 1 performs the following operations for each CORESET pool index. An activation command ("TCI state to be activated") may be received for the associated CORESET. The activation command 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 TCI state IDs for that one CORESET pool index are The "activated TCI state" corresponding to the index may be related to one physical cell ID, and the "activated TCI state" corresponding to the one CORESET pool index and a different CORESET pool index may be related to one physical cell ID. The "enabled TCI state" may be associated with a physical cell ID different from the one physical cell ID. The activation command may be received as a MAC CE. One or more CORESETs may be configured in one BWP. One CORESET has a CORESET pool index of '0' or '1'. The multi-DCI mode is set when the higher layer parameter PDCCH-Config is set to 2 for the CORESET Pool Index (CORESET Pool Index or coresetPoolIndex). It may contain two different values.

[0267] DCI field 'Transmission Configuration Indication' (i.e., TCI field) One code point may contain up to two TCI states. The terminal device 1 may receive an activation command. The activation command may contain up to eight combinations of up to two TCI states. The terminal device 1 may use the 'Activate' command to map more than eight TCI states to the code points of the DCI field 'Transmission Configuration Indication'. You do not need to expect to receive the status.

[0268] 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.

[0269] If the TCI field is present and the time offset is greater than or equal to a threshold, and after the first setting of the TCI state is received and before an activation command is received, the terminal device 1 may assume that the DMRS of the PDSCH in one serving cell is QCL for the SS / PBCH block and QCL type A. The presence of the TCI field may mean that the higher layer parameter tci-PresentInDCI is set to 'enabled'. The presence of the TCI field may mean that the higher layer parameters tci-PresentDCI-1-2 are set for CORESET scheduling the PDSCH. The time offset may be the offset between reception of the DL DCI and the PDSCH. The threshold may be timeDurationForQCL. The threshold may be based on the reported terminal capabilities.

[0270] 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 upper layer parameter may be tci-PresentInDCI, which is set to 'enabled'. The first higher layer parameter may be tci-PresentInDCI set to 'enabled' for a CORESET that schedules a PDSCH or a multicast PDSCH. The first higher layer parameter may be tci-PresentDCI-1-2.

[0271] If the TCI field is not present and the time offset is greater than or equal to the threshold, the TCI state or QCL assumption for the PDSCH is determined based on the PDCCH antenna port QCL. The TCI conditions or QCL assumptions applied for CORESET used for The time offset is the time offset between the reception of the DL DCI and the corresponding PDSCH. The threshold may be timeDurationForQCL.

[0272] If SFN is configured for PDCCH, and if SFN is configured for PDSCH, and if PDSCH is scheduled by DCI format, and if the time offset is greater than or equal to the threshold, and if the default beam is supported, then The QCL assumptions or TCI conditions for CORESET are the same as the QCL assumptions or TCI conditions for CORESET. Also, if dynamic switching is not supported, CORESET may be activated in two TCI states: CORESET for reception of DL DCI and If SFN is configured for the PDCCH, and if SFN is configured for the PDSCH, and if the PDSCH is scheduled by a DCI format, and if the time offset is equal to or greater than a threshold, and if the default beam is not supported, it may be assumed that the TCI field is present. For PDSCH, the upper layer parameter sfnSchemePdcch may be set. Setting the SFN in the sfnSchemePdsch parameter is equivalent to setting the upper layer parameter sfnSchemePdsch. The DCI format may be any of DCI format 1_0, DCI format 1_1, and DCI format 1_2. The default beam may be sfn-DefaultDL-BeamSetup for DCI without a TCI field. The time offset may be the time offset between reception of the DL DCI and the corresponding PDSCH. The threshold is timeDurationForQCL may be.

[0273] If SFN is configured for PDSCH, and if SFN is not configured for PDCCH, and if PDSCH is scheduled by DCI format 1_1 / 1_2, and if time If the offset is greater than or equal to a threshold, the presence of a TCI field may be expected.

[0274] If the PDSCH is scheduled by DCI format 1_0 / 1_1 / 1_2, if SFN method A is configured for the PDCCH, if SFN is not configured for the PDSCH, if there is no TCI codepoint (a codepoint in the TCI field) with two TCI states, if the time offset is equal to or greater than a threshold, and if the CORESET that schedules the PDSCH is indicated by two TCI states, the TCI state or QCL assumption for the PDSCH may be the same as the first TCI state and the first QCL assumption applied for the CORESET. Setting SFN scheme A to 'sfnSchemePdcch' may mean setting 'sfnSchemeA'.

[0275] If the unified TCI state is not set, and the time offset is less than the threshold, and If at least one configured TCI state includes a qcl-Type set to typeD, the DMRS port of the PDSCH may be an RS and a QCL for a certain QCL parameter. The data may be used for PDCCH QCL indication of a certain CORESET. It may be a CORESET associated with the search area with the lowest CORESET ID (controlResourceSetId) among the CORESETs monitored by the terminal device 1 in the lot.

[0276] If the unified TCI state is set, and the time offset is less than the threshold, and If at least one configured TCI state contains a qcl-Type with typeD set, and If the indicated TCI state is related to the PCI (Physical Cell ID) of the serving cell, the indicated TCI state may be applied to PDSCH reception. If the inter-cell offset is smaller than a threshold, and at least one configured TCI state includes a qcl-Type set to typeD, and the indicated TCI state is associated with a PCI (Physical Cell ID) other than the serving cell, the DMRS port of the PDSCH in the serving cell uses the reference signal and QCL associated with the QCL parameter of the CORESET associated with the lowest CORESET ID. Setting the unified TCI state may be setting the higher layer parameter dl-OrJointTCI-StateList.

[0277] 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, When the SRI is set, the terminal device 1 may use 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 a DL reference signal associated with the indicated TCI state. For example, when TCI-State or TCI-UL-State is set, the terminal device 1 may use the same spatial domain filter as the spatial domain filter used to receive a DL reference signal associated with the indicated TCI state. The first terminal capability may be beamCorrespondenceWithoutUL-BeamSweeping set to '1'.

[0278] For Periodic CSI-RS resources, the TCI state is determined by the SS / PBCH block and the time The SS / PBCH block may have a PCI different from the PCI of the serving cell. The periodic CSI-RS resource is the CSI-RS resource in the NZP CSI-RS resource set (NZP-CSI-RS-ResourceSet) for Tracking Reference Signal (TRS). The NZP may be a non-zero power. The CSI-RS resource set for the TRS may be the CSI-RS resource set for which the higher layer parameter trs-Info is configured.

[0279] If a unified TCI state is configured for periodic CSI-RS and semi-persistent CSI-RS resources, the terminal device 1 assumes that the indicated TCI state does not apply. You may do so.

[0280] For aperiodic CSI-RS resources, the TCI state is the same as for periodic CSI-RS resources. The aperiodic CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set for TRS. The periodic CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set for TRS.

[0281] For the first CSI-RS resource, the TCI state may indicate QCL for the second CSI-RS resource and Type A. For the first CSI-RS resource, the TCI state may indicate QCL for the third CSI-RS resource and Type B. The first CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set for TRS. The first CSI-RS resource may not be a CSI-RS resource in the NZP CSI-RS resource set for repetition, and the second CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set for TRS. The third CSI-RS resource may be a CSI-RS resource in Type D. If not, the CSI-RS resources in the NZP CSI-RS resource set for TRS The CSI-RS resource set for repetition may be the CSI-RS resource set with the higher layer parameter repetition.

[0282] For the fourth CSI-RS resource, the TCI state may indicate QCL for the second CSI-RS resource and Type A. For the fourth CSI-RS resource, the TCI state may indicate SS / PBCH The fourth CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set for repetition.

[0283] If the unified TCI state is not configured, for DMRS of PDCCH, the TCI state is set to CSI-RS resource and Type A. The CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set.

[0284] When SFN scheme A is configured for PDCCH and CORESET is activated in two TCI states, the DMRS ports of PDCCH in CORESET may be DL RS (Downlink Reference Signal) and QCL in two TCI states. When SFN scheme B is configured for PDCCH and CORESET is activated in two TCI states, the DMRS ports of PDCCH in CORESET may be DL RS (Downlink Reference Signal) and QCL in two TCI states. When CORESET is activated in the TCI state, the DMRS port of the PDCCH in CORESET is The second TCI state may be DL RS and QCL, and the second TCI state may not include the QCL parameters {Doppler shift, Doppler spread}. Configuring SFN scheme A for PDCCH may be configuring sfnSchemePdcch with 'sfnSchemeA' set. Configuring SFN scheme B for PDCCH may be configuring sfnSchemePdcch with 'sfnSchemeB' set. may be set.

[0285] Coherent Joint Transmission (CJT) may be configured for the PDSCH. Configuring CJT may mean configuring the upper layer parameter cjtSchemePDSCH. Configuring CJT scheme A may mean configuring the upper layer parameter cjtSchemeA. Configuring CJT scheme B may mean configuring the upper layer parameter cjtSchemeB. When CJT scheme A is configured for the PDSCH, the DMRS port of the PDSCH may be QCL for reference signals of two indicated TCI states and QCL type A except for the QCL parameters {Doppler shift, Doppler spread}.

[0286] If the unified TCI state is not configured, for DMRS of PDSCH, the TCI state is set to the CSI-RS resource and Type A. The CSI-RS resource may be a CSI-RS resource in a non-zero power (NZP) CSI-RS resource set.

[0287] When unified TCI state is configured, for DMRS of PDCCH, the TCI state is the same as the CSI-RS resource. If unified TCI state is configured, for DMRS of PDSCH, the TCI state shall indicate QCL for CSI-RS resources and Type A. That's fine.

[0288] When SFN scheme A is configured for the PDSCH and two TCI states are indicated, the DMRS port of the PDSCH may be DL-RS and QCL in the two TCI states. If SFN technique B is configured for the PDSCH and two TCI states are indicated, the DMRS ports of the PDSCH may be DL-RS and QCL in the two TCI states. If SFN technique B is configured for the PDSCH and two TCI states are indicated, the DMRS ports of the PDSCH may be DL-RS and QCL in the two TCI states. The first TCI state may be set to one of the two TCI states, and the second TCI state may not include the QCL parameters {Doppler shift, Doppler spread}. The two TCI states may be indicated by one code point in the DCI field 'Transmission Configuration Indication' in the DCI scheduling the PDSCH. The setting of SFN scheme A for the PDSCH is indicated when 'sfnSchemeA' is set. SFN scheme B may be set for PDSCH. To be set, it may be that sfnSchemePdsch is set to 'sfnSchemeB'.

[0289] If unified TCI state is set, and multi-DCI mode is set, and one If the indicated TCI state is indicated by a TCI field in DCI format 1_1 / 1_2 (DCI field 'Transmission Configuration Indication') associated with one CORESET pool index value, one indicated TCI state may correspond to one CORESET pool index value. Setting the unified TCI state may mean setting dl-OrJointTCI-StateList or TCI-UL-State. When multi-DCI mode is set, This may be achieved by configuring the higher layer parameter PDCCH-Config, which contains two different values ​​of the CORESET pool index. It may be set in the dataControlResourceSet.

[0290] When the unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and the terminal capability of the default beam is not reported, and the time offset is smaller than the threshold, the first indicated TCI-State may be applied to PDSCH reception. The terminal capability of the default beam may be used to buffer the received signal before the threshold by using the two indicated TCI-States. The terminal capability of the default beam may be capability in Frequency Range 2 (FR2). For example, FR2 is the frequency range from 24250 MHz to 52600 MHz. The time offset may be the offset between the reception of the scheduling DCI format 1_0 / 1_1 / 1_2 and the reception of the scheduled PDSCH. The time offset may be the offset between the reception of the activated DCI format 1_0 / 1_1 / 1_2 and the reception of the activated PDSCH. The threshold may be timeDurationForQCL or a value smaller than timeDurationForQCL.

[0291] If the unified TCI state is configured, and if the multi-DCI mode is configured, and if the terminal capability of the default beam is not reported, and if the first time offset is smaller than a threshold, the "indicated TCI state" corresponding to CORESET pool index 0 may be applied to PDSCH reception. If the unified TCI state is configured, and if the multi-DCI mode is configured, and if the terminal capability of the default beam is not reported, the second time offset may not be expected to be smaller than a threshold. The first time offset is the CORESET The second time offset may be an offset between reception of a DCI format in a CORESET associated with CORESET pool index 0 and reception of a PDSCH. The second time offset may be an offset between reception of a DCI format in a CORESET associated with CORESET pool index 1 and reception of a PDSCH. Good too.

[0292] When a unified TCI state is set, and when the terminal device 1 has two indicated TCI-States, and when certain conditions are met, the upper layer parameter applyIndicatedTCIState indicates that the first indicated TCI-State, the second indicated TCI-State, or the two indicated TCI-States is applied to PDSCH reception scheduled by DCI format 1_0. The upper layer parameter applyIndicatedTCIState may indicate "first", "second", or "both", where "first" corresponds to the first indicated TCI state. "second" may correspond to the second indicated TCI state, and "both" may correspond to two indicated TCI states. If CJT is configured for the PDSCH or SFN is configured for the PDSCH, the higher layer parameter applyIndicatedTCIState is set to "both". A condition may be that the terminal is in Frequency Range 1 (FR1). A condition may be that the terminal is reporting the capability of the default beam in FR2. stomach.

[0293] If the unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and certain conditions are met, and the upper layer parameter applyIndicatedTCIState is not set, the first indicated TCI-State is scheduled by DCI format 1_0. This may be applied to scheduled PDSCH.

[0294] If the unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and certain conditions are met, and the TCI indication field indicates "00", If the unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and if a certain condition is met, the first indicated DL / Joint TCI state may be applied to the PDSCH. If this condition is met and the TCI indication field indicates "01", the second indicated The DL / Joint TCI state may be applied to the PDSCH. When the unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and when certain conditions are met, And if the TCI indication field indicates "10", two indicated DL / Joint TCI states may be applied to the PDSCH. If a unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and if a certain condition is met, and if the TCI indication field is not set, two DL / Joint TCI states may be applied to the PDSCH. The PDSCH may be scheduled by DCI format 1_1 / 1_2. The TCI indication field may be a DCI field in DCI format 1_1 / 1_2. If the TCI indication field is set to DCI Whether it is present in format 1_1 / 1_2 may be determined by the higher layer parameter tciSelection-PresentInDCI.

[0295] The terminal device 1 may have the upper layer parameter TCI-UL-State set. For example, the terminal device 1 may have one list set in the upper layer parameter BWP-UplinkDedicated. A list may contain up to 64 higher layer parameters TCI-UL-State. may be a list of up to 64 higher layer parameters TCI-UL-State. Each TCI-UL-State (or UL-TCI-State configuration) may contain parameters for configuring one reference signal. For example, each TCI-UL-State may be used for PUSCH, PUCCH, and some or all of the SRS. The list may include a parameter for configuring a reference signal for determining the uplink transmit spatial filter of the UE. The list may be the upper layer parameter ul-TCI-StateList. The TCI state may be TCI-UL-State. UL-TCIState (TCI-UL-State) is the This may also be referred to as the TCI state or the unified TCI state.

[0296] 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.

[0297] CSI reporting may be triggered by DCI (DCI format), e.g., aperiodic The CSI report may be triggered by DCI format 0_1 / 0_2.

[0298] The time-frequency resources used to report the CSI may be controlled by the base station device 3. The CSI includes a CQI (Channel Quality Indicator), a PMI (Precoding Matrix Indicator), a CRI (CSI-RS resource indicator), and an SSBRI (SS / PBCH Block Resource Indicator). indicator), LI (Layer Indicator), RI (Rank Indicator), L1-RSRP (Layer 1-Reference Signal Received Power), L1-SINR (Layer 1-Signal-to-Interference-plus-Noise Ratio), CapabilityIndex, TDCP (Time-Domain Channel Properties), and some or all of the following: It may consist of all or some of the following:

[0299] N CSI reporting configurations may be configured in the terminal device 1. The CSI reporting configuration may be a higher layer parameter CSI-ReportConfig.

[0300] M CSI resource configurations may be configured in terminal device 1. The CSI resource configuration may be a higher layer parameter CSI-ResourceConfig.

[0301] The terminal device 1 may be configured with one or two lists of trigger state(s). The list of trigger states is specified in the higher layer parameters CSI-AperiodicTriggerStateList, and , or both of the higher layer parameters CSI-SemiPersistentOnPUSCH-TriggerStateList. For example, the list of trigger states for aperiodic CSI may be the higher layer parameter CSI-AperiodicTriggerStateList. For example, the list of trigger states for semi-persistent CSI may be the higher layer parameter CSI-AperiodicTriggerStateList. The list of trigger states may be an upper layer parameter CSI-SemiPersistentOnPUSCH-TriggerStateList. The list of trigger states may include one or more trigger states.

[0302] Each trigger state may include a list of CSI reporting configurations. The list of CSI reporting configurations may indicate one or more resource set IDs. Each trigger state in the list of trigger states for aperiodic CSI may include a list of CSI reporting configurations. Each trigger state in the list of trigger states for semi-persistent CSI may include one CSI reporting configuration.

[0303] Each CSI reporting configuration (Reporting Setting CSI-ReportConfig) is used for one downlink BWP and One downlink BWP may be indicated by a BWP ID (higher layer parameter BWP-Id). One downlink BWP may be given in the CSI resource configuration. For example, For example, one downlink BWP may be provided in the CSI resource configuration for channel measurement.

[0304] Each CSI report configuration may include some or all of the CSI resource configuration for channel measurement (higher layer parameter resourceForChannelMeasurement) and the CSI resource configuration for interference measurement (higher layer parameter csi-IM-ResourcesForInterference, higher layer parameter nzp-CSI-RS-ResourcesForInterference).

[0305] Each CSI reporting configuration may include a codebook configuration, a time-domain behavior, a frequency granularity for CQI and PMI, a measurement restriction configuration, and a CSI-related quantity configuration. For example, the CSI-related quantities may be LI, L1-RSRP, L1-SINR, CRI, SSBRI, CapabilityIndex, and TDCP.

[0306] The time domain operation may be indicated by the higher layer parameter reportConfigType, which can be one of the following: 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', Alternatively, 'periodic' may be set. If the time domain operation is set to 'aperiodic', the CSI reporting configuration may be the CSI reporting configuration for aperiodic CSI. If the time domain operation is set to 'semiPersistentOnPUCCH' or 'semiPersistentOnPUSCH', the CSI reporting configuration may be the CSI reporting configuration for semi-persistent CSI. If the time domain operation is set to 'periodic', the CSI reporting configuration may be the CSI reporting configuration for periodic CSI.

[0307] For CSI reporting for periodic CSI and semi-persistent CSI, the period and slot offset are For CSI reports for periodic CSI and semi-persistent CSI, the period and slot offset may be set appropriately in the numerology of the uplink BWP corresponding to the transmission of the CSI report. may be used.

[0308] Each CSI reporting configuration may include a report quantity (reportQuantity) configuration. The report quantity configuration may be a CSI-related quantity, an L1-RSRP-related quantity, an L1-SINR-related quantity, a CapabilityIndex-related quantity, or a TDCP-related quantity. The amount may be indicated.

[0309] The frequency granularity may be indicated by the higher layer parameter reportFreqConfiguration. The PMI and CQI reports may correspond to a wideband or sub-band. For example, the frequency granularity of each of the PMI and CQI may be wideband or sub-band.

[0310] The measurement limit setting may be a time limit, which may be set for one or both of the channel measurement and the interference measurement.

[0311] The codebook configuration may include Type 1, Type 2, enhanced Type 2-CSI, super enhanced Type 2-CSI, super enhanced Type 2-port selection, super enhanced Type 2-CJT, super enhanced Type 2-port selection CJT, enhanced Type 2-predicted PMI, or super enhanced Type 2-port selection-predicted PMI. The settings may include codebook subset restrictions. The codebook settings may include group-based reporting settings.

[0312] Each CSI resource configuration (CSI-ResourceConfig) may contain a list of S CSI resource sets (CSI-RS resource sets). A list may be given by the higher layer parameter csi-RS-ResourceSetList. A list may contain references to NZP CSI-RS resource sets and / or SS / PBCH block sets. A list may also contain references to CSI-IM (CSI-Interference Measurement) resource sets. Each A CSI resource configuration may be associated with one downlink BWP. The CSI resource configurations may be indicated by an ID. All CSI resource configurations linked to one CSI reporting configuration may have the same downlink BWP. One or more CSI resource configurations may be linked to one CSI reporting configuration. For example, one or more CSI resource configurations with the same downlink BWP may be linked to one CSI reporting configuration.

[0313] Each CSI resource configuration may include one or more CSI-RS resource sets. Each CSI-RS resource set may be an NZP CSI-RS resource set. Each CSI-RS resource set may be an SS / PBCH block set. Each CSI-RS resource set may be a CSI-IM resource set. Each CSI-RS resource set may contain one or more CSI-RS resources. Each NZP CSI-RS resource set may contain one or more NZP CSI-RS resources. That's fine.

[0314] The time domain behavior of the CSI-RS resources in one CSI resource configuration may be indicated by a higher layer parameter (resourceType). The time domain behavior may be set to aperiodic, periodic, or semi-persistent. For periodic and semi-persistent CSI, For CSI resource configuration for LTE, the CSI resource configuration may contain one CSI-RS resource set. In CSI resource configuration for periodic CSI and semi-persistent CSI, group-based reporting is used. If configured, the CSI resource configuration may include two or less CSI-RS resource sets.

[0315] In the CSI resource configuration for periodic CSI and semi-persistent CSI, the period and time offset are In the CSI resource configuration for periodic CSI and semi-persistent CSI, the BWP ID The period and time offset are given in the downlink BWP numerology given by This may also be done.

[0316] If multiple CSI resource configurations include the same NZP CSI-RS resource (or the same NZP CSI-RS resource ID), the same time domain behavior may be configured for the multiple CSI resource configurations. If multiple CSI resource configurations include the same CSI-IM resource (or the same CSI-IM resource ID), The same time domain behavior may be configured for multiple CSI resource configurations. All CSI resource configurations linked to a port configuration may have the same time domain behavior.

[0317] CSI-IM resources for interference measurement may be configured for one or more CSI resource configurations. NZP CSI-RS resources for interference measurement may be configured for one or more CSI resource configurations. NZP CSI-RS resources for channel measurement may be configured for one or more CSI resource configurations.

[0318] NZP CSI-RS resources for channel measurements and CSI-IM resources for interference measurements (or , NZP CSI-RS resource) may be QCL for Type D. The NZP CSI-RS resource for channel measurement and the CSI-IM resource (or NZP CSI-RS resource) for interference measurement are , may be configured for one CSI report (CSI report configuration).

[0319] For TDCP measurement, one periodic CSI reporting configuration (CSI reporting configuration for periodic CSI) may be configured. The CSI reporting configuration is configured based on the channel number in the CSI-RS for tracking. The TDCP measurement may be performed in accordance with the reporting quantity setting in the CSI reporting configuration. This may be a measurement where the reportQuantity includes TDCP.

[0320] For L1-SINR measurement, if one CSI resource configuration is configured, one CSI resource configuration The setting may be a setting for channel measurement and interference measurement. The channel measurement and interference measurement may be a measurement in NZP CSI-RS for L1-SINR calculation. The resource configuration may be given by resourcesForChannelMeasurement. L1-SINR measurement may be a measurement when the report quantity setting (reportQuantity) in the CSI report setting includes L1-SINR.

[0321] In the L1-SINR measurement, when two CSI resource configurations are configured, the first CSI resource configuration may be a configuration for channel measurement, and the second CSI resource configuration may be a configuration for interference measurement. The channel measurements may be for SSB or NZP CSI-RS. The interference measurement may be a measurement on the CSI-IM or one-port NZP CSI-RS. The first CSI resource configuration may be given by resourcesForChannelMeasurement The second CSI resource configuration may be given by csi-IM-ResourcesForInterference or nzp-CSI-RS-ResourcesForInterference.

[0322] The terminal device 1 may calculate CSI parameters, such as LI, CQI, PMI, and RI. The terminal device 1 calculates the RI based on the CRI and may calculate a part or all of the CRI. The terminal device 1 may calculate the PMI based on the RI and the CRI. The terminal device 1 may calculate the CQI based on the PMI, RI, and CRI. The terminal device 1 may calculate the LI based on the CQI, PMI, RI, and CRI.

[0323] The CSI reporting configuration may be aperiodic, periodic, or semi-persistent. The source may be periodic, semi-persistent, or aperiodic. A CSI report may be triggered for the combination of CSI reporting configuration and CSI resource configuration. The matching may be determined by time-domain operations. Periodic CSI-RS may be configured by higher layers. Semi-persistent CSI-RS may be activated and deactivated. Aperiodic CSI-RS may be configured, activated, and triggered.

[0324] Periodic CSI-RS can be configured with periodic, semi-persistent, and aperiodic CSI reporting. Semi-persistent CSI-RS is a combination of semi-persistent and aperiodic CSI reporting. Aperiodic CSI-RS may be combined with any of the aperiodic CSI reporting configurations. For semi-persistent CSI reporting, in the case of reporting in the PUCCH, the terminal device 1 may receive an activation command. For semi-persistent CSI reporting, in the case of reporting in the PUSCH, the terminal device may receive triggering (trigger state) in the DCI. Aperiodic CSI reporting may be triggered by the DCI. Aperiodic CSI The report may be triggered by the MAC CE (eg, a subselection indication).

[0325] The terminal device 1 may determine one CRI. One CRI may be determined from a set of CRI values. The terminal device 1 may report the number in each CRI report. If a CSI-RS resource set for repetition is configured and the CSI-RS resource set is for channel measurement, the CRI may not be reported. The codebook setting (codebookType) may be type 2 (type II, type II-PortSelection), extended type 2-CSI (type II-r16), extended type 2-Port If any of the following are set: Selection (typeII-r16), Super Enhanced Type 2-CSI (typeII-r17), Super Enhanced Type 2-Port Selection (typeII-PortSelection-r17), Super Enhanced Type 2-CJT (typeII-CJT-r18), Super Enhanced Type 2-Port Selection CJT (typeII-CJT-PortSelection-r18), Enhanced Type 2-Predicted PMI (typeII-Doppler-r18), and Super Enhanced Type 2-Port Selection-Predicted PMI (typeII-Doppler-PortSelection-r18), CSI may not be reported.

[0326] For periodic or semi-persistent CSI reporting in PUCCH, the period T CSI and slot offset T offset may be set by higher layer parameters (e.g., reportSlotConfig). The terminal device 1 may transmit a CSI report. A CSI report may be transmitted in one slot. One radio frame is designated by System Frame Number (SFN) n. f One slot may correspond to slot index n μ s,f One radio frame and one slot may correspond to mod (N frame,μ slot *n f + n μs,f -T offset , T CSI ) is 0. μ may be the subcarrier spacing setting of the uplink BWP in which the CSI report is transmitted.

[0327] In the semi-persistent CSI reporting in PUSCH, the period T CSI may be set by a higher layer parameter (for example, reportSlotConfig). A CSI report may be transmitted in one radio frame and one slot. mod(N frame,μ slot *(n f -n start f )+ n μ s,f -n start s,f , T CSI ) may be determined based on the fact that SFN n start f and slot number n start s,f The first semi-persistent PUSCH The first semi-persistent PUSCH transmission may follow the activation DCI.

[0328] For semi-persistent or aperiodic CSI reporting in PUSCH, one or more slots off The set may be configured by a higher layer parameter. If CSI reporting is triggered / activated by DCI format 0_2, the higher layer parameter is reportSlotOffsetListDCI-0-2 If the CSI report is triggered / activated by DCI format 0_1, the higher layer parameter may be reportSlotOffsetListDCI-0-1. One slot offset may be selected in the triggering / activating DCI.

[0329] In the CSI report, one of two sub-band sizes may be configured. The sub-bands are N SB PRB The number of PRBs in one BWP may be between 24 and 72. If so, N SB PRB may be 4 or 8. If the number of PRBs in one BWP is between 73 and 144, N SB PRB may be 8 or 16. If the number of PRBs in one BWP is between 145 and 275, N SB PRB may be 16 or 32.

[0330] Higher layer parameters (e.g., reportFreqConfiguration) may indicate the frequency granularity of the CSI report. One CSI report configuration may define the band of the CSI report as a subset of sub-bands of a BWP. Higher layer parameters may indicate the subset of sub-bands in one BWP. The sub-bands may be contiguous or non-contiguous. One BWP may be the BWP in which the CSI is reported. The frequency density of one CSI-RS resource may be less than the frequency density of one CSI-RS resource. It may not be expected that a low sub-band will be configured. One CSI-RS resource may have a frequency density in one sub-band. One CSI-RS may be linked to one CSI report configuration. The frequency density may be set for each CSI-RS port (CSI port, antenna port) per PRB. The density may be 100% or less.

[0331] When CSI-IM resources are linked to CSI reporting configuration, one sub-band may not be expected to be configured, and all PRBs in one sub-band may not have CSI-IM resource elements (REs).

[0332] The frequency granularity can be wideband or subband CQI reporting. If global CQI reporting is configured, the global CQI is reported for the entire CSI reporting band. may be reported. If subband CQI reporting is configured, one CQI may be reported for each subband in the CSI reporting band.

[0333] The frequency granularity may be full band PMI or sub-band PMI reporting. If port is configured, one all-band PMI is reported for the entire CSI reporting band. If sub-band PMI reporting is configured, one for the whole CSI reporting band. A single wideband indication (i1) of the CSI report may be reported. For each subband in the baseband, one subband indication (i2) is It may be ported.

[0334] The frequency granularity may be full band if certain conditions are met, such as full band PMI reporting being configured, full band CQI reporting being configured, and reportQuantity being set to CRI, RI, PMI, and CQI ('cri-RI-PMI-CQI'). One condition may be that the full band PMI report is set and Band CQI reporting is set, and the report quantity setting (reportQuantity) includes CRI, LI, and PMI. , and CQI('cri-LI-PMI-CQI') may be set. The report quantity setting (reportQuantity) is set to CRI, RI, and i1 ('cri-RI-i1'). If certain conditions are not met, the frequency granularity may be sub-band.

[0335] When one CSI reporting configuration is configured for one BWP with 24 or less PRBs, it may be expected that one CSI reporting configuration has frequency granularity of the entire band.

[0336] One or N sub-bands may be set. The size of the first sub-band is determined by the starting PRB position N of the BWP. start BWP,i The size of the Nth subband may be limited based on the starting PRB position of the BWP and the BWP size.

[0337] The terminal device 1 may report CSI. If semi-persistent CSI reporting is configured, If both the CSI-IM and NZP CSI-RS resources are configured as periodic or semi-persistent, the terminal device 1 may report CSI. If both the CSI-IM and NZP CSI-RS resources are configured as periodic, semi-persistent, or aperiodic, the terminal device 1 may report the CSI.

[0338] DCI formats 0_1 / 0_2 / 0_3 may trigger a CSI report. The terminal device 1 may not expect multiple CSI reports associated with the same CSI reporting configuration to be triggered.

[0339] For aperiodic CSI, each trigger condition may be associated with one or more CSI reporting configurations. Each trigger state is determined by a higher layer parameter (e.g., CSI-AperiodicTriggerState). Each CSI report may be linked to one or more CSI resource configurations. Each CSI reporting configuration may be linked to a periodic, semi-persistent, or aperiodic CSI resource configuration. For each CSI reporting configuration, group-based reporting does not have to be configured. good.

[0340] If one CSI resource configuration is configured, the one CSI resource configuration is used for L1-RSRP. May correspond to channel measurements or channel / interference measurements for L1-SINR calculation. The CSI resource configuration may be given by resourcesForChannelMeasurement.

[0341] When two CSI resource configurations are configured, the first CSI resource configuration is for channel measurement. The second CSI resource configuration may be performed in CSI-IM or NZP CSI-RS. The first CSI resource configuration may be for interference measurement. The second CSI resource configuration may be given by csi-IM-ResourcesForInterference or nzp-CSI-RS-ResourcesForInterference.

[0342] Three CSI resource configurations may be configured. The first CSI resource configuration is used for channel measurement. The second CSI resource configuration may be for interference measurement using CSI-IM. The third CSI resource configuration may be for interference measurement by the NZP CSI-RS. The first CSI resource configuration may be given by resourcesForChannelMeasurement. The second CSI The resource configuration may be given by csi-IM-ResourcesForInterference. The third CSI resource configuration may be given by nzp-CSI-RS-ResourcesForInterference. The resourcesForChannelMeasurement, csi-IM-ResourcesForInterference, and nzp-CSI-RS-ResourcesForInterference may be configured in one CSI report configuration.

[0343] For aperiodic CSI (CSI reporting) and for periodic and non-persistent CSI resource configuration Therefore, each trigger condition may be associated with one or more CSI report configurations. The configuration may be linked to periodic or non-persistent CSI resource configuration. Group-based reporting may be configured for each CSI reporting configuration. If one CSI resource configuration is configured, it may be for L1-RSRP measurements. In this case, the number of CSI-RS resource sets in the CSI resource configuration may be two.

[0344] For aperiodic CSI (CSI reporting) and for aperiodic CSI resource configuration, A trigger state may be associated with one or more CSI reporting configurations. Group-based reporting may be configured in the L1-RSRP measurement group. Each CSI reporting configuration may be associated with a first CSI-RS resource set and a second CSI-RS resource set for L1-RSRP measurement.

[0345] For semi-persistent or periodic CSI (CSI reporting), each CSI reporting configuration can be set to periodic or may be linked to a semi-persistent CSI resource configuration. If one CSI resource configuration is configured, In this case, one CSI resource configuration may be for channel measurement for L1-RSRP, or , may be for channel / interference measurement for L1-SINR. When two CSI resource configurations are configured, the first CSI resource configuration may be for channel measurement, and the second CSI resource configuration may be for interference measurement performed in CSI-IM. In this case, the second CSI resource configuration is It may also be useful.

[0346] When the codebook configuration is set to Type 2, the number of CSI-RS resources in the CSI-RS resource set for channel measurement in the CSI report configuration may be 1.

[0347] In one CSI resource configuration, more than 64 NZP CSI-RS resources and SS / PBCH blocks One or both of the CSI resources may not be expected. One CSI resource configuration may be for channel measurement. In the CSI report configuration corresponding to the CSI resource configuration for channel measurement, the reporting amount configuration may be set to none, cri-RI-CQI, cri-RSRP, ssb-Index-RSRP, cri-SINR, ssb-Index-SINR, cri-RSRP-Index, ssb-Index-RSRP-Index, cri-SINR-Index, or ssb-Index-SINR-Index. If interference measurement is performed in CSI-IM, each CSI-RS resource for channel measurement may be associated with one CSI-IM resource. The number of CSI-RS resources for channel measurement may be equal to the number of CSI-IM resources.

[0348] For measurements other than L1-SINR measurements (e.g., CSI measurements), the ports of each NZP CSI-RS configured for interference measurement may correspond to an interference transmission layer. In measurements other than L1-SINR measurements (e.g., CSI measurements), all interference transmission layers at the NZP CSI-RS port may consider EPRE. In L1-SINR measurements, dedicated interference measurements may A fixed resource may be configured, and the total received power in the dedicated resource may correspond to the interference-to-noise ratio.

[0349] In one CSI reporting configuration, the report quantity setting (reportQuantity) may be set to none, cri-RI-PMI-CQI, cri-RI-i1, cri-RI-i1-CQI, cri-RI-CQI, cri-RSRP, cri-SINR, ssb-Index-RSRP, ssb-Index-SINR, cri-RI-LI-PMI-CQI, cri-RSRP-Index, ssb-Index-RSRP-Index, cri-SINR-Index, ssb-Index-SINR-Index, or tdcp.

[0350] If the reporting amount setting is set to none, the terminal device 1 does not need to report CSI.

[0351] When the reporting amount setting is set to cri-RI-PMI-CQI or cri-RI-LI-PMI-CQI, the terminal device 1 may report a first PMI. The first PMI may be a precoder matrix for each subband. The first PMI may be a precoder matrix for the entire CSI reporting band.

[0352] When the reporting quantity setting is set to cri-RI-i1, the terminal device 1 reports the second PMI. The second PMI may be configured with a single all-band indication i1. The codebook setting in the CSI reporting configuration may be set to type 1. The frequency granularity for this may be full band.

[0353] When cri-RI-i1-CQI is set in the reporting amount setting, the terminal device 1 reports the third PMI. The third PMI may consist of a single full-band indication. The CQI may be calculated based on the third PMI. The terminal device 1 may report the CQI.

[0354] If cri-RI-CQI is set in the reporting amount setting, the terminal device 1 may report the RI. The terminal device 1 may calculate the CQI for one rank.

[0355] If cri-RSRP, ssb-Index-RSRP, cri-RSRP-Index, or ssb-Index-RSRP-Index is set in the reporting quantity setting, and if group-based reporting is not set, the terminal device 1 , may report N different CRIs or SSBRIs for each CSI reporting configuration. Furthermore, the terminal device 1 may not be required to update measurements. N may be determined by a higher layer parameter (e.g., nrofReportedRS).

[0356] When cri-RSRP, ssb-Index-RSRP, cri-RSRP-Index, or ssb-Index-RSRP-Index is set in the reporting amount setting, and when group-based reporting is set, the terminal device 1: Two different CRIs or SSBRIs may be reported for each CSI reporting configuration. Furthermore, the terminal device 1 may be requested to update measurements for more than 64 CSI-RS / SSB resources. The terminal device 1 may receive the CSI-RS / SSB resources simultaneously.

[0357] If cri-SINR, ssb-Index-SINR, cri-SINR-Index, or ssb-Index-SINR-Index is set in the reporting amount configuration and group-based reporting is not configured, the terminal device 1 , N different CRIs or SSBRIs may be reported for each CSI reporting configuration.

[0358] When cri-SINR, ssb-Index-SINR, cri-SINR-Index, or ssb-Index-SINR-Index is set in the reporting amount configuration, and when group-based reporting is configured, the terminal device 1: Two different CRIs or SSBRIs may be reported for each CSI reporting configuration.

[0359] If tdcp is set in the reporting quantity setting, the terminal device 1 reports the amplitude and phase of the TDCP measurement. You may also use it.

[0360] If cri-RSRP, cri-RI-PMI-CQI, cri-RI-i1, cri-RI-i1-CQI, cri-RI-CQI, cri-RI-LI-PMI-CQI, cri-SINR, or cri-SINR-Index is configured in the reporting amount configuration, and K CSI-RS resources are configured in the CSI-RS resource set for channel measurement, the UE The NZP CSI-RS resource set k+1 may calculate CSI parameters other than the CRI based on the CRI. The k+1th CSI-IM resource in the CSI-IM resource set for interference measurement The entry of K may correspond to a CRI value k. The k+1-th entry of the NZP CSI-RS resource in the NZP CSI-RS resource set for interference measurement may correspond to a CRI value k. s can be greater than 1. s If is 2, each CSI-RS resource can support up to 16 CSI-RS ports (CSI ports, Antenna ports) may be provided. s If is greater than or equal to 3 and less than or equal to 8, each CSI-RS resource is allocated A maximum of eight CSI-RS ports may be provided. When cri-RI-PMI-CQI is set in the reporting amount setting, Type 2 does not have to be set in the codebook setting.

[0361] If CJT is configured, each resource may contain up to 32 CSI-RS ports. This means that the reporting quantity setting in the CSI reporting configuration is set to 'cri-RI-PMI-CQI'. , and the codebook configuration may be set to 'typeII-CJT-r18' or 'typeII-CJT-PortSelection-r18'. If CJT is configured, the NZP CSI-RS resource set for channel measurement may be configured with K resources. K may be an integer between 1 and 4. good.

[0362] If ssb-Index-RSRP or ssb-Index-RSRP-Index is set in the reporting amount setting, the terminal device 1 may report SSBRI. The k+1-th entry of the CRI-SSB resource in the CSI-SSB resource set may correspond to the value k of SSBRI.

[0363] When ssb-Index-SINR or ssb-Index-SINR-Index is set in the reporting amount configuration, the terminal device 1 may calculate L1-SINR based on the SSBRI. The k+1-th entry of the CRI-SSB resource in the CSI-SSB resource set for channel measurement may correspond to the value k of the SSBRI. The k+1-th entry of the CSI-IM resource in the CSI-IM resource set for interference measurement may correspond to the value k of the SSBRI. The k+1-th entry of the NZP CSI-RS resource in the NZP CSI-RS resource set for interference measurement may correspond to the value k of the SSBRI. The k+1 th entry of the source may correspond to value k of the SSBRI.

[0364] If the reporting quantity configuration is set to cri-RSRP, cri-SINR, none, cri-RSRP-Index, or cri-SINR-Index, and one CSI reporting configuration links one aperiodic CSI resource configuration, 16 is allowed in one CSI-RS resource set in one CSI resource configuration. It may not be expected that more CSI-RS resources will be configured.

[0365] The L1-RSRP calculation may configure CSI-RS resources, SS / PBCH block resources, or both CSI-RS and SS / PBCH block resources. The L1-RSRP calculation may configure up to 16 CSI-RS resource sets, and up to 64 CSI-RS resources in each CSI-RS resource set.

[0366] In L1-RSRP calculation, one CRI or SSBRI is reported for each CSI reporting configuration. If nrofReportedRS is 1, the reported L1-RSRP value is defined by 7 bits. The value of L1-RSRP may range from -140 dBm to -44 dBm. The value of L1-RSRP may be given in 1 dB intervals.

[0367] For L1-RSRP calculation, if multiple CRIs or SSBRIs are reported for each CSI reporting configuration (e.g., nrofReportedRS is 2 or more), the first value of L1-RSRP reported is 7 bits. The first value may be defined in 1 dB increments. The second value may be calculated as the difference between the first values. The second value may be calculated in 2 dB increments. The first value may be defined in 1 dB increments. The second value may be defined ... It may be given at intervals.

[0368] In the L1-SINR calculation, the NZP CSI-RS resource and / or the SS / PBCH block resource may be configured for channel measurement. In the L1-SINR calculation, the NZP CSI-RS resource or the CSI-IM resource may be configured for interference measurement.

[0369] For L1-SINR calculation and channel measurement, a CSI resource configuration with up to 16 CSI-RS resource sets may be configured, and a total of 64 CSI-RS resources or SS / PBCH block resources may be configured. The source may be set.

[0370] In L1-SINR calculation, one CRI or SSBRI is reported for each CSI reporting configuration If nrofReportedRS is 1, the reported L1-SINR value is defined by 7 bits. The value of L1-SINR may range from -23 to 40 dB. The value of L1-SINR may be given in 0.5 dB intervals.

[0371] For L1-SINR calculation, if multiple CRIs or SSBRIs are reported for each CSI reporting configuration (e.g., nrofReportedRS is 2 or more), the first value of the reported L1-SINR is 7 bits. The first value may be defined in 4 bits, and the second value of the reported L1-SINR may be defined in 4 bits. The first value may range from -23 dB to 40 dB. The first values ​​may be given in 0.5 dB intervals. The second value may be calculated as the difference between the first values. The second values ​​may be given in 1 dB intervals. may be given by

[0372] The aperiodic CSI report may correspond to an aperiodic CSI-RS. Related to aperiodic, periodic, or semi-persistent CSI resource settings For aperiodic CSI reporting settings in a CSI-RS resource set, the trigger state is determined by higher layer parameters (e.g., CSI-AperiodicTriggerStateList). A trigger state may be configured for CSI resource configuration for channel measurement, interference measurement, or both.

[0373] In the aperiodic CSI reporting configuration, one set of trigger conditions may be configured by higher layers, and the trigger conditions may be associated with any one downlink BWP.

[0374] The terminal device 1 may receive DCI with a CSI request field. Two or more DCIs with the same CSI request field may be received in one slot in one cell. It is not expected that the information will be trusted.

[0375] In multiple aperiodic CSI-RS resource sets with the same trigger offset in the same trigger state, different TCI states are configured for the same aperiodic CSI-RS resource ID. That need not be expected.

[0376] In one slot in one cell, no more than one request for aperiodic CSI reporting may be expected to be received.

[0377] The trigger condition may be initiated by a CSI request field in the DCI. If all information bits in the request field are set to zero, the CSI It does not have to be done.

[0378] The number of trigger conditions is 2^N TS If the value is equal to or greater than -1, the terminal device 1 sends a subselection indication The subselection indication may be received in the CSI request field with a code point of up to 2^N. TS It may be used to map the trigger state of -1. TS is a CSI request It may also be the number of bits in the row field.

[0379] If the terminal device 1 transmits a first PUCCH in slot n, the mapping of the CSI request field and the trigger state may be applied after slot n+N. The first PUCCH may be a PUCCH with HARQ-ACK information corresponding to a PDSCH carrying a subselection indication. .

[0380] The CSI request field may indicate one trigger condition, e.g., 2^N trigger conditions. TS If less than -1, the CSI request field indicates one trigger condition. That's fine.

[0381] In one CSI-RS resource set associated with each trigger state (CSI triggering state), For each aperiodic CSI-RS resource, a first QCL setting and a first QCL type may be indicated.

[0382] If a list of trigger states for aperiodic CSI (e.g., CSI-AperiodicTriggerStateList) is configured and one CSI resource configuration linked to one CSI reporting configuration has multiple aperiodic CSI-RS resource sets, one aperiodic CSI-RS resource set In one trigger state in one CSI resource configuration, one CSI-IM / NZP CSI-RS resource set may be selected.

[0383] When aperiodic CSI reporting and aperiodic CSI-RS are used, one trigger offset (also called CSI-RS offset) is used in one CSI-RS resource set (NZP CSI-RS resource set, CMI-IM resource set, or SS / PBCH block resource set). The triggering offset may be set by a higher layer parameter (e.g., aperiodicTriggeringOffset). The triggering offset may include a number of slots from 0 to N, where N may be based on the subcarrier spacing of the CSI-RS. The triggering offset may be set by a higher layer parameter (e.g., aperiodicTriggeringOffset). The triggering offset may include a number of slots from 0 to N, where N may be based on the subcarrier spacing of the CSI-RS. The trigger offset may follow the trigger offset of the NZP CSI-RS for channel measurements.

[0384] The terminal device 1 may receive the CSI-RS. The aperiodic CSI-RS may be transmitted in slot n+X, where slot n may be the slot containing the DCI that triggers the CSI-RS. X may be the trigger offset.

[0385] The aperiodic CSI-RS may not be transmitted before the first OFDM symbol, which may be the symbol carrying the DCI that triggers the CSI-RS transmission. If a scheduling offset restriction applies and the trigger offset is less than or equal to the minimum scheduling offset restriction, the transmission of the CSI-RS may not be expected to be triggered by the trigger condition indicated by the CSI request field in the DCI.

[0386] If interference measurements are performed on aperiodic NZP CSI-RS, the trigger offset of the NZP CSI-RS for interference measurements may be the same as the trigger offset of the NZP CSI-RS for channel measurements.

[0387] It may not be expected that multiple CSI reports triggered by different DCIs will be transmitted in the same OFDM symbol on one carrier.

[0388] A scheduling offset may be determined between the last symbol of the PDCCH carrying DCI that triggers the aperiodic CSI-RS resource and the first symbol of the aperiodic CSI-RS resource. If two PDCCH candidates exist, the PDCCH candidate that ends later may be used to determine the scheduling offset. The last symbol of the PDCCH candidate that ends earlier may be the same as or later than the first symbol of the aperiodic CSI-RS resource.

[0389] The semi-persistent CSI may correspond to a semi-persistent CSI-RS. For semi-persistent CSI reporting in PUSCH, the set of trigger conditions is determined by higher layer parameters (e.g. The CSI request field in the DCI scrambled by the SP-CSI-RNTI may be set to one trigger state. The terminal device 1 may activate the first semi-persistent CSI report. The first semi-persistent CSI report may not expect to receive the first DCI associated with the first semi-persistent CSI report. The first semi-persistent CSI report may be accompanied by the same CSI reporting configuration ID as the second semi-persistent CSI report. The report may be activated by the second DCI. The first DCI and the second DCI may be scrambled by the SP-CSI-RNTI. The terminal device 1 may receive the second DCI before the first DCI. may be received.

[0390] For semi-persistent CSI reporting on the PUCCH, the PUCCH resource used to transmit the CSI report may be configured by a higher layer parameter (reportConfigType). Semi-persistent CSI reporting in may be activated by an activation command. The command may select one semi-persistent CSI reporting configuration. The terminal device 1 may receive a PDSCH carrying a HARQ-ACK command in slot n. The terminal device 1 may transmit a PUCCH with HARQ-ACK information corresponding to the PDSCH in slot n. The selected semi-persistent CSI reporting configuration may be applied from slot n+N onwards.

[0391] When semi-persistent CSI resource configuration is configured (for example, when resourceType is set to semiPersistent) and when the terminal device 1 receives an activation command, CSI-RS / CSI-IM transmission may be applied from slot n+N for the CSI-RS resource set for channel measurement and the CSI-IM / NZP CSI-RS resource set for interference measurement. In this case, the PUCCH may be transmitted with HARQ-ACK information for the PDSCH carrying the command.

[0392] The terminal device 1 may receive a deactivation command. If semi-persistent CSI resource configuration is configured and the terminal device 1 receives a deactivation command, the suspension of CSI-RS / CSI-IM transmission may be applied from slot n+N. The terminal device 1 may perform a deactivation command in slot n. A PUCCH with HARQ-ACK information for a PDSCH carrying a command may be transmitted.

[0393] A trigger state (e.g., SP-CSI triggering state) may be mapped to one code point in the CSI request field in the DCI. The terminal device 1 examines the PDCCH in the DCI to activate or deactivate (deactivate, release) the semi-persistent CSI. For example, if the CRC of the DCI format is scrambled with the SP-CSI-RNTI, The terminal device 1 may verify the PDCCH. For example, the terminal device 1 may verify the PDCCH by checking the special field in the DCI format. Based on the value set in the field, the terminal device 1 may activate or deactivate the semi-persistent CSI.

[0394] The terminal device 1 may activate or deactivate the CSI reporting setting indicated by the DCI request field in the DCI.

[0395] If CSI resource configuration (e.g., CSI-RS / CSI-IM resource configuration or ZP (Zero power) CSI-RS resource set configuration) is activated and the corresponding downlink BWP is active, CSI resource configuration may be taken into consideration. If CSI resource configuration (e.g., CSI-RS / CSI-IM resource configuration or ZP (Zero power) CSI-RS resource set configuration) is activated and the corresponding downlink BWP is inactive, CSI resource configuration may be suspended.

[0396] The terminal device 1 may report the CQI. The terminal device 1 calculates one CQI index. The modulation method, coding, and transport method of the PDSCH transport block may be The port block size may correspond to one CQI index. The PDSCH transport blocks may be received so that the error probability is not exceeded. The error probability may be the transport block error probability. The target error probability is 0.1 Or it could be 0.00001.

[0397] The terminal device 1 may report the PMI. The PMI may be determined based on the number of layers (number of CSI-RS ports, number of CSI-RS ports) and the number of layers. The number of layers ν may be related to the RI. The value of the PMI corresponding to Type 1 is i1∈i 1,1 , i 1,2 , i 1,3 , i 1,4 and i2. The PMI corresponding to Type 1 may be the PMI when typeI-SinglePanel or typeI-MultiPanel is set in the codebook setting. The value of the PMI corresponding to Type 2 is i1∈i 1,1 , i 1,2 , i 1,3,1 , i 1,3,2 , i 1,4,1 , i 1,4,2 and i2. The PMI corresponding to type 2 may be a PMI when any of type II, type II-r16, type II-PortSelection-r16, type II-r17, type II-PortSelection-r17, type II-CJT-r18, type II-CJT-PortSelection-r18, type II-Doppler-r18, and type II-Doppler-PortSelection-r18 is set in the codebook setting. good.

[0398] If the extended CSI port is not set, the number of CSI ports may be any of 4, 8, 12, 16, 24, and 32. If the extended CSI port is set, the number of CSI ports may be any of 48, 64, 96, and 128. Not setting the extended CSI port means setting the number of CSI ports to any of 4, 8, 12, 16, 24, and 32. Setting the extended CSI ports may mean setting the number of CSI ports to any of 48, 64, 96, and 128.

[0399] One or more NZP CSI-RS resource sets may be configured by a CSI resource configuration (CSI-ResourceConfig). Each NZP CSI-RS resource set may contain one or more CSI-RS resource sets. The NZP CSI-RS resource set may consist of NZP CSI-RS resources, NZP CSI-RS resource sets, and CSI One or more parameters P may be configured for some or all of the resource configurations.

[0400] The one or more parameters P may include an ID of an NZP CSI-RS resource, which may determine an identifier of the CSI-RS resource.

[0401] The one or more parameters P may include a periodicity and a slot offset. The periodicity and slot offset may be used for periodic / semi-persistent CSI-RS. All CSI-RS resources in one NZP CSI-RS resource set may have the same periodicity.

[0402] The one or more parameters P are first higher layer parameters that determine the number of antenna ports, CDM (Code Domain Multiplexing) type, OFDM symbols, and subcarriers of the CSI-RS resource. The first higher layer parameter may correspond to the CSI-RS resources in one slot.

[0403] The one or more parameters P may include a second higher layer parameter that determines the number of antenna ports, and the second higher layer parameter may be set in the first higher layer parameter.

[0404] The one or more parameters P may include a third higher layer parameter that determines frequency density. The third higher layer parameter may be set in the first higher layer parameter. The third higher layer parameter may determine the frequency density of each CSI port (antenna port, CSI-RS port) per PRB. The third higher layer parameter may be set to 0.5 even, 0.5 odd, 1, or 3. The third upper layer parameter may be set to 0.5even, 0.5odd, 1, or 3. This may be done.

[0405] The one or more parameters P include a fourth higher layer parameter that determines the CDM type. The fourth upper layer parameter may be set in the first upper layer parameter, and the fourth upper layer parameter may determine the value and pattern of the CDM.

[0406] The one or more parameters P may include a parameter that determines the ratio of the power per RE (Energy per Resource element: EPRE) of the PDSCH and the NZP CSI-RS.

[0407] One or more parameters P determine the power ratio per RE of the NZP CSI-RS and SS / PBCH blocks. It may also include parameters.

[0408] The one or more parameters P may include a scrambling ID, which may be 10 bits in length.

[0409] The one or more parameters P may include a BWP ID. The BWP ID is included in the CSI resource configuration. The BWP ID may determine the BWP in which the CSI-RS is located.

[0410] The one or more parameters P may include a repetition setting. The repetition setting may be configured in a CSI-RS resource set. In an NZP CSI-RS resource set for repetition (an NZP CSI-RS resource set in which the repetition setting is configured), the CSI-RS resources in the NZP CSI-RS resource set may be assumed to be transmitted using the same downlink spatial domain transmit filter. The repetition setting may be configured when the reporting amount setting is set to cri-RSRP, cri-SINR, cri-RSRP-Index, cri-SINR-Index, or none.

[0411] The one or more parameters P may include QCL information for the periodic CSI-RS. The QCL information may include a reference to the TCI state. The TCI state may indicate the QCL source RS and the QCL type.

[0412] The one or more parameters P may include a Tracking Reference Signal (TRS) configuration. The TRS configuration may be configured in a CSI-RS resource set. In the NZP CSI-RS resource set for TRS (the NZP CSI-RS resource set in which the TRS configuration is configured), the NZP CSI-RS resource The antenna ports of the NZP CSI-RS resources in the set may be the same.

[0413] For all channel measurement CSI-RS resources in one CSI-RS resource set The same frequency density and the same number of antenna ports may be configured. The same starting resource block (RB) position, the same number of RBs, and the same CDM type may be configured for all CSI-RS resources in a block.

[0414] The bandwidth and starting CRB (Common resource block) index of the CSI-RS resource may be determined by the starting RB position and the number of RBs. The starting RB position and the number of RBs may be determined by higher layer parameters (e.g., startingRB and nrofRBs). The starting RB position and the number of RBs may be set as an integer multiple of 4 RBs. The reference position of the starting RB position may be CRB0. The bandwidth (number of RBs) of the CSI-RS resource may be 24 RBs or more and the BWP size or more.

[0415] One or more CSI-IM resource sets may be configured. Each CSI-IM resource set is , may be configured with one or more CSI-IM resources. For the CSI-IM resources, one or more parameters Q may be configured.

[0416] The one or more parameters Q may include a CSI-IM resource ID. The meter Q is the subcarrier position k within one slot of the CSI-IM resource. CSI-IM Determine the part The one or more parameters Q may include a time slot of CSI-IM resources. OFDM symbol position l in CSI-IM The one or more parameters Q may include parameters determining the period and slot offset for periodic / semi-persistent CSI-IM. The one or more parameters Q may include parameters determining the band of CSI-IM. That's fine.

[0417] The CSI-IM resource may be composed of four REs. For example, in pattern 1, the CSI-IM resource is composed of (k CSI-IM , l CSI-IM ), (k CSI-IM , l CSI-IM +1), (k CSI-IM +1, l CSI-IM ), and (k CSI-IM +1, l CSI-IM For example, in pattern 2, the CSI-IM resources may be configured with REs corresponding to (k + 1). CSI-IM , l CSI-IM ), (k CSI-IM +1, l CSI-IM ), (k CSI-IM +2, l CSI-IM ), and (k CSI-IM +2, l CSI-IM +1).

[0418] The CSI may be calculated based on a CSI reference resource. The CSI reference resource in the frequency domain may be a PRB (Physical Resource Block) corresponding to the band where the CSI is calculated. The CSI reference resource in the time domain may be one slot. One slot may be N slots before the slot where the CSI is reported. The N slots may be determined based on the delay time.

[0419] The terminal device 1 may calculate and report a CQI (CQI index) based on the CSI reference resource. A situation can be envisaged.

[0420] One of the situations is that two OFDM symbols are occupied by control signals. In one or more situations, the number of PDSCH and DMRS is 12 symbols. One of the one or more situations may be the same subcarrier spacing as PDSCH reception. One of the one or more situations may be that the CSI reference resource uses the same CP length and subcarrier spacing as the PDSCH. One of the one or more situations may be that no RE is used for the PBCH, PSS, or SSS. One of the situations may be that the Redundancy Version is 0. One of the situations may be that there are no REs allocated for NZP CSI-RS and ZP CSI-RS. One of the situations may be that the configured maximum number of front-loaded DMRS symbols is used. One of the one or more circumstances may be that an Additional DMRS system is configured. In one or more situations, the OFDM symbol for the PDSCH may not include a DMRS. In one or more situations, two PRBs may be used. may be combined (bundled).

[0421] One of the one or more situations may be that a signal of v layers in the PDSCH is multiplied by a precoder corresponding to the PMI. The number of layers may be up to 8.

[0422] The terminal device 1 may report the CSI using the PUSCH. In response to decoding of the DCI format that triggers the trigger state, the terminal device 1 reports aperiodic CSI by the PUSCH. You may do so.

[0423] A DCI format may schedule two PUSCHs, in which case aperiodic CSI reporting may be performed in the second PUSCH. A DCI format may schedule three or more PUSCHs, in which case aperiodic CSI reporting may be performed in the penultimate PUSCH. This may be performed in the PUSCH.

[0424] Aperiodic CSI reporting in PUSCH may support full-band and sub-band frequency granularity.

[0425] The terminal device 1 transmits a PUSCH signal in response to decoding of the DCI format that activates the trigger state. A CSI request form in DCI format may report semi-persistent CSI. The field may indicate the trigger condition to activate or deactivate.

[0426] Aperiodic CSI reports on PUSCH are multiplexed with uplink data on PUSCH. Semi-persistent CSI reporting on PUSCH may be performed in conjunction with uplink data on PUSCH. Don't expect it to be duplicated.

[0427] When PMI is reported (or fed back) in PUSCH, the CSI report may consist of Part 1 and Part 2. Part 1 is a fixed size for indicating the number of information bits in Part 2. Part 1 may be attached or transmitted before Part 2.

[0428] Part 1 may include CSI corresponding to CSI parameters associated with a first codeword (transport block). Part 1 may include RI and CRI. Part 2 may include CSI corresponding to CSI parameters associated with a second codeword. Part 2 may include PMI and LI.

[0429] The terminal device 1 may report the CSI using the PUCCH. The CSI report in the PUCCH is , may be configured by a higher layer. Multiple periodic CSI reports corresponding to multiple CSI reporting configurations may be configured by a higher layer.

[0430] The terminal device 1 may report semi-persistent CSI in a PUCCH. The semi-persistent CSI report may be applied from slot n+N. In slot n, a PUCCH with HARQ-ACK information corresponding to a PDSCH carrying an activation command may be transmitted. The activation command may include one or more CSI report configurations.

[0431] The terminal device 1 may report CSI. The CSI may include some or all of the PMI, RI, LI, CQI, CRI, SSBRI, RSRP, SINR, CapabilityIndex, and TDCP. CSI may be a collective term for the PMI, RI, LI, CQI, and CRI.

[0432] The bit size of a PMI (Precoding Matrix Indicator) may be determined based on at least the number of antenna ports and the number of layers.

[0433] The bit size of the RI (Rank Indicator) may be determined based at least on the number of antenna ports and the set rank number. The bit size of the LI (Layer Indicator) may be determined based on the rank number. The bit size of the CSI-RS resource indicator (CRI) may be determined based on at least the number of CSI-RS resources in the CSI-RS resource set.

[0434] 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.

[0435] 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.

[0436] DCI formats 0_0 / 0_1 / 0_2 may be used for scheduling PUSCH A BWP indication (Bandwidth part indicator) field may be included in some or all of DCI format 0_1 ​​and DCI format 0_2. The number of information bits constituting the BWP indication field may be determined based on the number of UL BWPs. A TPC command (TPC command for scheduled PUSCH) field may be included in one or both of DCI format 0_1 ​​and DCI format 0_2. A second TPC command (Second TPC command for scheduled PUSCH) field may be included in one or both of DCI format 0_1 ​​and DCI format 0_2. PUSCH) field is either DCI format 0_1 ​​or DCI format 0_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 PUSCH) field may be included in DCI format 1_1.

[0437] CSI-RS (Channel state information reference signal) is ZP (zero power) CSI-RS or Alternatively, it may be a non-zero-power (NZP) CSI-RS.

[0438] The CSI-RS sequence may be r(m). r(m) may be determined by a pseudo-random sequence (e.g., a Gold code). The pseudo-random sequence is determined by the OFDM symbol interval in one slot. index, slot index n within one radio frame μ s,f , and may be initialized based on the scramble ID.

[0439] For each CSI-RS, the CSI-RS sequence r(m) is represented by resource elements (RE) (k,l). p,μ For example, the CSI-RS sequence r(m) may be mapped to β CSIRS *w f (k')*w t (l')*r(m) as the resource element (RE) (k,l) p,μ where k is the subcarrier position, l is the OFDM symbol position, p is the antenna port (CSI port), and μ is the subcarrier spacing setting. CSIRS is the scaling factor, w f (k') is FD-OCC (Frequency domain orthogonal cover code), w t (l') may be a time domain orthogonal cover code (TD-OCC).

[0440] In ZP CSI-RS, β CSIRS may be 0. In NZP CSI-RS, β CSIRS is greater than 0 β CSIRS is determined based on higher layer parameters (e.g., powerControlOffsetSS). It may be set.

[0441] m in r(m) is floor(n*α)+k'+floor((k bar *ρ) / N RB SC ) may be used. * may be used for multiplication.

[0442] ρ may be the frequency density. When the number of antenna ports is 1, α is ρ and If the number of antenna ports is two or more, α may be 2ρ. When ρ is 0.5, each antenna port may be mapped to every 2 RBs. If ρ is an even integer of 0.5, each antenna port may be mapped to an even-numbered RB every two RBs. If ρ is an odd integer of 0.5, each antenna port may be mapped to an odd-numbered RB every two RBs.

[0443] Subcarrier position k is the PRB position n and subcarrier position setting k bar and a frequency domain-orthogonal cover code (FD-OCC) index k'.

[0444] Subcarrier position k=0 may correspond to subcarrier 0 in CRB0.

[0445] The PRB position n may be a value between 0 and N-1, where N may be the bandwidth of the CSI-RS resource (for example, the number of RBs: nrofRBs).

[0446] Subcarrier position setting k bar may determine the subcarrier position within one slot Subcarrier position setting k bar depends on the number of antenna ports, frequency density, and CDM type. The subcarrier positioning k may be determined based on bar is the number of subcarriers in one RB. It may be in the A position. bar is k i k i-1 f(i) may be the bit number of the ith bit in the bitmap that is set to 1. The bitmap may be provided by a higher layer parameter (e.g., frequencyDomainAllocation). The size of the bitmap may be determined based at least on the number of antenna ports, and f(i) may be repeated every ceil(1 / ρ) RBs.

[0447] The FD-OCC index k' may be determined by the CDM type. If the CDM type is set to no CDM, k' may be 0. If the CDM type is set to length 2 CDM in the frequency domain (FD), k' may be 0 or 1.

[0448] OFDM symbol position l is the OFDM symbol position setting l bar and TD-OCC (Time domain-Orthogonal The cover code index l′ may be determined by

[0449] OFDM symbol positioning bar may determine the symbol position within one slot. OFDM symbol position setting l bar may be determined based on the number of antenna ports, frequency density, and CDM type. bar may be one or both of l0 and l1. l0 may be determined by a first higher layer parameter (e.g., firstOFDMSymbolInTimeDomain). l1 may be determined by a second higher layer parameter (e.g., firstOFDMSymbolInTimeDomain2). l0 may be an integer value between 0 and 13. l1 may be an integer value between 2 and 12.

[0450] The TD-OCC index l' may be determined by the CDM type. If the CDM type is set to no CDM, l' may be 0. If the CDM type is set to a CDM of length 2 in the time domain (TD), l' may be 0 or 1. If the CDM type is set to a CDM of length 4 in the time domain, l ’ may be 0, 1, 2, and 3.

[0451] The antenna port p may be 3000+s+j*L. The sequence index s may be an integer value from 0 to L-1. The CDM group size L may be any of 1, 2, 4, and 8. The CDM group size L may be determined based on the CDM type. For example, the CDM group size L may be the product of the length of the TD-OCC and the length of the FD-OCC. The CDM group index j may be an integer value from 0 to N / L-1. N may be the number of antenna ports (the number of CSI-RS ports).

[0452] If the FD-OCC index k' is 0, then w f (k') can be 0. FD-OCC index k If ' is 0 and 1, then [w f (0) w f (1)] can be the vectors [+1 +1] and [+1 -1]. If the TD-OCC index l' is 0, then w t (l') can be 0. TD-OCC index l' is 0 and 1, [w t (0) w t (1)] can be the vectors [+1 +1] and [+1 -1]. When the TD-OCC index l' is 0, 1, 2, and 3, [w t (0) w t (1) w t (2) w t (3)] ​​may be the vectors [+1 +1 + 1 +1], [+1 -1 +1 -1], [+1 +1 -1 -1], and [+1 -1 -1 +1] The series index s is first indexed by FD-OCC and then by TD-OCC. For example, a CDM type may be set with FD-OCC of length 2 and TD-OCC of length 4. When the sequence index s=0 is [w f (0) w f (1)]=[+1 +1] and [w t (0) w t (1) wt (2) w t (3)]=[+1 +1 + 1 +1], and the sequence index s=1 is [w f (0) w f (1)]=[+1 -1] and [w t (0) w t (1) w t (2) w t (3)]=[+1 +1 + 1 +1], and the sequence index s=2 is [w f (0) w f (1)]=[+1 +1] and [w t (0) w t (1) w t (2) w t (3)]=[+1 -1 + 1 -1], and the sequence index s=3 is [w f (0) w f (1)]=[+1 -1] and [w t (0) w t (1) w t (2) w t (3)]=[+1 -1 + 1 -1], and the sequence index s=4 is [w f (0) w f (1)]=[+1 +1] and [w t (0) w t (1) w t (2) w t (3)]=[+1 +1 -1 -1] The sequence index s=5 is [w f (0) w f (1)]=[+1 -1] and [w t (0) w t (1) w t (2) w t (3)]=[+1 +1 -1 -1], and the sequence index s=6 is [w f (0) w f (1)]=[+1 +1] and [w t (0) w t (1) w t (2) w t(3)]=[+1 -1 -1 +1], and the sequence index s=7 is [w f (0) w f (1)]=[+1 -1] and [w t (0) w t (1) w t (2) w t (3)]=[+1 -1 -1 +1].

[0453] The CDM groups are indexed first by frequency resource, then by time resource. For example, if the number of antenna ports is 32 and the CDM type is set to FD-OCC with length 2 (fd-CDM2), the CDM group index j is , the time-frequency resources may be indexed in the order (k0,l0), (k1,l0), (k2,l0), (k3,l0), (k0,l0+1), (k1,l0+1), (k2,l0+1), (k3,l0+1), (k0,l1), (k1,l1), (k2,l1), (k3,l1), (k0,l1+1), (k1,l1+1), (k2,l1+1), and (k0,l1+1).

[0454] The terminal device 1 may not expect to receive CSI-RS and DMRS in the same RE. The antenna ports within one CSI-RS resource may be QCL with respect to Type A. Device 1 may expect the antenna ports within one CSI-RS resource to have an average gain.

[0455] Coherent Joint Transmission (CJT) may be applied for PDSCH. CJT method A is set. When CJT method B is configured and two "indicated TCI states" are applied to the PDSCH, the DMRS of the PDSCH may be the downlink reference signals of the two "indicated TCI states" and QCL for Type A. When CJT method B is configured and two "indicated TCI states" are applied to the PDSCH, the DMRS of the PDSCH may be the downlink reference signals of the two "indicated TCI states" and QCL for Type A. If so, the DMRS of the PDSCH may be QCL for the downlink reference signals of the two "indicated TCI states" and Type A, but may exclude the {Doppler shit, Doppler spread} of the second indicative TCI state.

[0456] Setting the CJT may mean applying CJT scheme A or CJT scheme B. CJT scheme A may be set by the upper layer parameter cjtSchemeA. CJT scheme B may be set by the upper layer parameter cjtSchemeA. May be set by the layer parameter cjtSchemeB.

[0457] The "indicated TCI state" applied to the PDSCH may be determined by the higher layer parameter applyIndicatedTCIState. If CJT is configured, applyIndicatedTCIState is set to 'both'. ' may be indicated.

[0458] Setting the CJT may mean setting the CJT in the codebook setting. For example, setting the CJT may mean setting 'typeII-CJT-r18' or 'typeII-CJT-PortSelection-r18' in the codebook setting. The codebook setting may be set in the CSI report setting.

[0459] If at least PMI is set in the reporting amount setting in the CSI report setting, and If the codebook configuration in the reporting configuration is set to CJT, K CSI-RS resources may be configured in the CSI-RS resource set for channel measurement, where K is an integer between 1 and 4. K may be the number of TRPs. If interference measurement is performed in CSI-IM, one CSI-IM resource may be configured in the CSI-IM resource set. NZP CSI-RS If interference measurement is performed in the NZP CSI-RS resource set for interference measurement, One NZP CSI-RS resource may be configured.

[0460] When N4 is set in the CSI reporting configuration and 'cri-RI-PMI-CQI' is set in the reporting amount configuration If ' is set, K aperiodic CSI-RS resources or one semi-persistent CSI-RS resource may be configured in a CSI-RS resource set for channel measurement (resource set). In an aperiodic CSI-RS resource set, the K CSI-RS resources are allocated to the same trigger. K aperiodic CSI-RS resources may be triggered by a triggering instance, and two consecutive CSI-RS resources may be arranged in one or two slots. The K aperiodic CSI-RS resources may be transmitted in the order of the CSI-RS resource IDs. The CSI-RS resource IDs may be configured in one CSI-RS resource set. The K aperiodic CSI-RS resources may correspond to the same antenna port with the same port index. If interference measurement is performed on CSI-IM, one resource (CSI-IM resource) in one CSI-IM resource set may be used. If interference measurements are performed on the NZP CSI-RS, the One resource (NZP CSI-RS resource) is configured in the NZP CSI-RS resource set. K may be 4, 8, or 12.

[0461] Two resource groups may be configured. For example, one NZP CSI-RS resource set for channel measurements is K S It may involve resources and two resource groups In group 1, K1 resources may be configured. In group 2, K2 resources may be configured. K1+K2 is K s Alternatively, N resource pairs may be configured. Each resource pair may consist of one resource in group 1 and one resource in group 2. K S may be an integer from 2 to 8. N may be 1 or 2.

[0462] If the reporting quantity setting in one CSI reporting setting is set to 'cri-RI-PMI-CQI', and If the codebook setting in one CSI reporting configuration is set to 'typeII-CJT-r18' or 'typeII-CJT-PortSelection-r18', one NZP CSI-RS resource is used for channel measurement. A set may be configured with K resources (CSI-RS resources). Each resource (CSI-RS resource) may include up to 32 CSI-RS ports (antenna ports). K is an integer between 1 and 4. may be.

[0463] The codebook setting 'typeII-CJT-r18' means that the super-extended type II-CJT is Setting 'typeII-CJT-r18' in the codebook setting may also mean that CJT is set. When CJT is set, and N TRP When N CSI-RS resources are configured, TRPN1, N2, O1, and O2 may be the same for the CSI-RS resources. (N1, N2) and (O1, O2) are the number of antenna ports P CSI-RS By For example, if the number of antenna ports is 4, (N1, N2)=(2, 1) and (O1, O2)=(4, 1). For example, if the number of antenna ports is 8, (N1, N2)=(2, 2) and (O1, O2) = (4, 4). P CSI-RS can be 2*N1*N2. N TRP The CSI-RS resources are allocated in one resource set (CSI-RS resource set) for channel measurements. It may be set as N TRP may be 1, 2, 3, or 4.

[0464] When CJT is configured, the PMI may be determined based on (N1, N2) and (O1, O2), where (N1, N2) is the number of antenna ports P CSI-RS Determined by higher layer parameters based on That's fine.

[0465] Setting 'typeII-CJT-PortSelection-r18' in the codebook setting may mean that an ultra-extended type 2-port selection CJT is set. Setting 'typeII-CJT-PortSelection-r18' in the codebook setting may mean that a CJT is set.

[0466] When CJT is configured, the slot offset of the K CSI-RS resources is X may be set to 1 or 2. When X=1, the K CSI-RS resources are For X=2, K CSI-RS resources may be configured in the same slot. It may be configured in adjacent slots. Configuring CJT may mean that one CSI report configuration with a codebook configuration in which 'typeII-CJT-r18' or 'typeII-CJT-PortSelection-r18' is set is linked to one CSI-RS resource set (e.g., an NZP CSI-RS resource set for channel measurement). One CSI-RS resource set may include K resources (CSI-RS resources). K may be an integer from 1 to 4.

[0467] The fact that CJT is not configured may mean that NCJT (Non-Coherent Joint Transmission) is configured. When NCJT is configured and the reporting amount setting is set to 'cri-RI-PMI-CQI' or 'cri-RI-LI-PMI-CQI', the CSI-RS resource set for channel measurement is , may be configured with two resource groups and N resource pairs.

[0468] When CJT is configured and the reporting quantity setting is set to 'cri-RI-PMI-CQI', And, the CSI-RS resource set for one channel measurement is N TRP Configured with CSI-RS resources In this case, the terminal device 1 may assume a first formula for CQI calculation, in which the PDSCH signal at the antenna port (DMRS port) {1000, ..., 1000+v-1} is regarded as a signal equivalent to a symbol transmitted at the antenna port {3000, ..., 3000+P-1} of each CSI-RS resource. In the first equation, the vector [y (3000) σ1 (i) … y (3000+P-1) σ1 (i) y (3000) σ2 (i) … y (3000+P-1) σ2 (i) … y (3000)σN (i) … y (3000+P-1) σN (i)] is the precoding matrix W(i) and the vector [x (0) (i) … x (ν-1) (i)]. That is, The recoding matrix W(i) determines a set of N signals from the n PDSCH signals x. Each signal set may be P PDSCH signals y. {σ1,...,σN} may be N TRP may be indices of CSI-RS resources, e.g., 1 <= σ1 < … < σN <= N TRP Each signal set may overlap in time and frequency. W(i) is , may correspond to PMI. ν may be a layer. N TRP may be the number of TRPs.

[0469] The terminal device 1 may assume that a CJT is set for the downlink physical channel. As a problem, downlink physical channels and downlink reference signals from multiple TRPs are different. When multiple TRPs have different propagation delay times or frequencies, or when multiple TRPs have phase errors when estimating downlink channel state information from uplink reference signals, CJT becomes difficult. The present invention may be used to solve this problem. Figure 9 shows a CSI report according to one aspect of this embodiment. FIG. 10 is a diagram showing an example of a route.

[0470] Setting a CJT may mean setting one of a synchronous CJT and an asynchronous CJT. For example, when a CJT is set, either a synchronous CJT or an asynchronous CJT may be set. Setting the synchronous CJT may mean that at least the Multi-DCI mode is set. Setting the synchronous CJT may mean that at least the Single-DCI mode is set. Setting the asynchronous CJT may mean that the upper layer parameter 900 is set. Setting the synchronous CJT may mean that the upper layer parameter 900 is not set. Setting the synchronous CJT may mean that the CJT is set and the asynchronous CJT is not set. The upper layer parameter 900 may be a parameter for switching between synchronous CJT and asynchronous CJT. It may be a parameter.

[0471] The upper layer parameters 900 are used to define one CSI-RS resource set 920 or one CSI resource The higher layer parameters 900 may be configured for one or both of the PDSCH and the PDCCH. TRP It may indicate one of the CSI-RS.

[0472] Terminal device 1 is N TRP CSI-RS{910, ...,910+N TRP -1} may be received. TRP may be 1, 2, 3, or 4. TRP N may be the number of TRPs. TRP CSI-RS{910, ...,910+N TRP −1} may be a CSI-RS resource set. TRP CSI-RS{910, ...,910+N TRP −1} may be a TRS. TRP CSI-RS{910, ...,910+N TRP −1} may be a CSI-RS resource. For example, when CJT (asynchronous CJT or synchronous CJT) is configured, the terminal device 1 TRP CSI-RS{910, ...,910+N TRP−1}. Receiving a CSI-RS may be receiving a CSI-RS resource, a CSI-RS resource set, or a TRS.

[0473] N TRP CSI-RS{910, ...,910+N TRP -1} may be a CSI-RS resource One CSI-RS resource set 920 is N TRP CSI-RS {910, ..., 910+N TRP -1} Good. N TRP CSI-RS {910, ..., 910+N TRP −1} resources may be configured in one CSI-RS resource set 920. One CSI-RS resource set 920 is used for channel measurements. It may be present. N TRP CSI-RS {910, ..., 910+N TRP -1} consists of the same number of antenna ports. N TRP CSI-RS {910, ..., 910+N TRP −1} may be configured with the same frequency resources (e.g., the same number of RBs). TRP CSI-RS {910, ..., 910+N TRP -1} may have the same starting RB position.

[0474] If the reporting quantity setting is set to at least the frequency difference, N TRP CSI-RS{910, ...,910+N TRP −1} may be a CSI-RS resource set. TRP CSI-RS{910, ...,910+N TRP N −1} resource sets may be configured in one CSI resource configuration 930. TRP CSI-RS{910, ...,910+N TRP-1} Each of the resource sets is configured as a TRS The fact that a resource set is configured as a TRS means that the resource set is The layer parameter trs-Info may be set. TRP CSI-RS{910, ...,910+N TRP N resource sets may be associated with the same downlink BWP. TRP CSI-RS{910, ...,910+N TRP The resources corresponding to the resource sets {N -1} may be configured with the same number of antenna ports. The number of antenna ports may be 1. TRP CSI-RS{910, ...,910+N TRP It may be assumed that the resources corresponding to the resource set {N -1} are configured with the same antenna port. TRP CSI-RS{910, ...,910+N TRP -1} Resource sets are the same reporting volume settings. For example, the reporting amount setting may correspond to one or both of the time difference and the frequency difference. TRP CSI-RS{910, ...,910+N TRP Each of the {−1} resource sets may include N′ CSI-RS resources. TRP CSI-RS{910, ...,910+N TRP -1}ResourceSe N'×N corresponding to the TRP These resources are the same frequency resource (e.g., the same number of RBs). It may be configured as N TRP CSI-RS{910, ...,910+N TRP -1} N' × N corresponding resource sets TRP N resources may have the same starting RB position. TRP CSI-RS{910, ...,910+N TRP -1} N' × N corresponding resource sets TRPThe resources may be configured with the same number of antenna ports.

[0475] If the reporting quantity setting is set to at least the phase difference, N TRP CSI-RS{910, ...,910+N TRP Each of {N -1} may be a CSI-RS resource. TRP CSI-RS{910, ...,910+N TRP -1} is a CSI-RS resource. If at least the frequency difference is set in the reporting quantity setting, N TRP CSI-RS{910, ...,910+N TRP Each of {-1} may be a CSI-RS resource set. The time difference and frequency difference may be set in the report amount setting. The phase difference and time difference may be set in the report quantity setting. It is not expected that the phase difference and frequency difference are set in the report quantity setting. The frequency difference and PMI are set in the report quantity setting. N TRP CSI-RS{910, ...,910+N TRP -1} is a resource Whether the resource set corresponds to a specific resource or resource set may be determined based on a reporting quantity setting.

[0476] If a time lag is set in the reporting amount setting, N TRP CSI-RS{910, ...,910+N TRP -1} of Each of these may be a CSI-RS resource or a CSI-RS resource set. TRP CSI-RS{910, ...,910+N TRP -1} of When each of the CSI-RS resources is a CSI-RS resource, each CSI-RS resource may be configured to be a TRS and a QCL.

[0477] When asynchronous CJT is set, the terminal device 1 is set to 1 or N TRP In N time resources, TRP CSI-RS {910, ..., 910+N TRP -1} may be received.

[0478] The terminal device 1 may transmit the CSI 940. Transmitting the CSI corresponds to transmitting a CSI report. The terminal device 1 may transmit an uplink physical channel. For example, the terminal device 1 may transmit an uplink physical channel. For example, the terminal device 1 may transmit the CSI 940 in the uplink object with the CSI 940. For example, the terminal device 1 may transmit the CSI 940 using an uplink physical channel. Transmitting the CSI means transmitting an uplink physical channel with the CSI. It may be to believe.

[0479] CSI940 is N TRP CSI-RS {910, ..., 910+N TRP CSI 940 may be determined based on N TRP CSI-RS {910, ..., 910+N TRP The index may be determined based on the index {N -1}. TRP CSI-RS {910, ..., 910+N TRP The index {N -1} may be a CRI or a CSI-RS resource set indicator. For example, the CSI 940 may be configured with one or more CSI parameters. For example, the CSI 940 may include one or more CSI parameters. The one or more CSI parameters may be determined based on the CRI. The CRI is N TRP CSI-RS {910, ..., 910+N TRP N -1}.TRP CSI-RS {910, ..., 910+N TRP If each of {N -1} is a CSI-RS resource, the CSI 940 may include one CRI or SSBRI. One CRI or SSBRI may indicate a reference CSI-RS resource. TRP CSI-RS {910, ..., 910+N TRP If each of {{CSI-RS resource set indicators} -1} is a CSI-RS resource set, the CSI 940 may include one CSI-RS resource set indicator. One CSI-RS resource set indicator may indicate a reference CSI-RS resource set. The CSI-RS resource set for N TRP CSI-RS {910, ..., 910+N TRP −1}.

[0480] CSI940 is 1 or N TRP CRI, SSBRI, CSI-RS resource set indicator, time The CSI 940 may be configured with some or all of a difference index, a frequency difference index, and a phase difference index. For example, if at least a frequency difference is set in the reporting amount configuration, the CSI 940 may be configured with at least a frequency difference index and a CSI-RS resource set indicator. For example, if at least a phase difference is set in the reporting amount configuration, the CSI 940 may be configured with at least a phase difference index and a CRI. For example, if at least a frequency difference is set in the reporting amount configuration, the CSI 940 may be configured with at least a frequency difference index and a CSI-RS resource set indicator. If a time difference is set for both the CSI and the CSI-RS resource set indicator, the CSI 940 may be configured with at least a time difference index and one of a CSI-RS resource set indicator and a CRI. When a time difference and a frequency difference are set in the configuration, CSI 940 may be configured with a time difference index, a frequency difference index, and a CSI-RS resource set indicator. For example, when a phase difference and a time difference are set in the reporting amount configuration, CSI 940 may be configured with a phase difference index, a time difference index, and a CRI. For example, when a time difference is set in the reporting amount configuration, CSI 940 may be configured with a CRI. If only the frequency difference is set, the CSI 940 may consist of a time difference index and a CSI-RS resource set indicator. It is not required that the frequency difference and phase difference are set in the reporting quantity configuration. For example, if at least the frequency difference is set in the reporting quantity configuration, the CSI 940 may consist of at least N TRP - One frequency difference index and one CSI-RS resource set index For example, if the reporting quantity setting is set to at least a phase difference, the CSI 940 may be configured with an indicator. TRP -It can be composed of one phase difference index and one CRI. For example, if the reporting amount setting is set to at least the time difference, the CSI 940 may TRP - It may be composed of one time difference index and one of one CSI-RS resource set indicator and CRI. For example, when the time difference and frequency difference are set in the reporting amount setting, the CSI 940 may be composed of N TRP -1 time difference index and N TRP - It may consist of one frequency difference index and one CSI-RS resource set indicator. When the phase difference and time difference are set in the quantity setting, the CSI940 TRP -1 phase difference index and N TRP For example, if only the time difference is set in the reporting quantity setting, the CSI 940 may be configured with N TRP - It may consist of one time difference index and one CSI-RS resource set indicator. If configured by the layer parameters, the CSI 940 may not include the CRI, SSBRI, and CSI-RS resource set indicators.

[0481] The CSI 940 configured with a time difference index may be the CSI 940 configured with a time difference. The CSI 940 configured with a frequency difference index may be the CSI 940 configured with a frequency difference. The CSI 940 configured with a phase difference index may be the CSI 940 configured with a phase difference.

[0482] The configuration for the CSI 940 may be determined based on the CSI reporting configuration 950. For example, the components (CSI parameters) of the CSI 940 may be determined by a report quantity configuration (reportQuantity) in the CSI reporting configuration 950. The time domain behavior of the CSI 940 may be determined based on the CSI reporting configuration 950. The transmission opportunity (time resource) of the CSI 940 may be determined based on the CSI reporting configuration 950. The report quantity configuration may be determined by the CSI reporting configuration 950. It may be determined as follows.

[0483] N TRP CSI-RS {910, ..., 910+N TRP -1} is based on the CSI resource configuration 930. For example, N TRP CSI-RS {910, ..., 910+N TRP The configuration for one CSI-RS resource set 920 including {-1} may be configured in the CSI resource configuration 930. .N TRP CSI-RS {910, ..., 910+N TRP −1} time domain operation is based on the CSI resource configuration 930 N TRP CSI-RS {910, ..., 910+N TRPThe transmission opportunities (time resources) for {−1} may be determined based on the CSI resource configuration 930. The CSI resource configuration 930 may be The CSI resource configuration 930 may be linked to the CSI reporting configuration 950. For example, the CSI resource configuration 930 may be configured in the CSI reporting configuration 950.

[0484] The calculation unit in the terminal device 1 calculates a part or all of the time difference, frequency difference, and phase difference. You can calculate it.

[0485] The terminal device 1 may calculate the time difference. For example, the time difference may be set in the reporting amount setting. If asynchronous CJT is set, the terminal device 1 may calculate the time difference. If asynchronous CJT is set, the time difference may be set in the reporting amount setting. If asynchronous CJT is not set, the reporting amount setting It may not be expected that a time difference will be set.

[0486] Terminal device 1 is N TRP The terminal device 1 may calculate N −1 time differences. TRP CSI-RS {910, ..., 910+N TRP -1} based on N TRP The terminal device 1 may calculate N −1 time differences. TRP CSI-RS {910, ..., 910+N TRP -1} propagation time (average delay) can be calculated or derived. Good. For example, N TRP CSI-RS {910, ..., 910+N TRP -1} in each of the resource sets The terminal device 1 may calculate the average delay based on the correlation values ​​between the multiple CSI-RS resources in the The first time difference may be a difference between an average delay of the first CSI-RS and an average delay of the second CSI-RS. The second time difference may be a difference between an average delay of the first CSI-RS and an average delay of the third CSI-RS.TRP The time difference between the first CSI-RS and the Nth CSI-RS is TRP The average delay of CSI-RS The difference between the average delay of the first CSI-RS and the average delay of the first CSI-RS does not need to be calculated. The first CSI-RS may be referred to as a reference CSI-RS. The average delay may be a propagation delay. If a time difference is set in the reporting amount configuration, the reference CSI-RS may be a CSI-RS resource set.

[0487] Terminal device 1 is N TRP -1 time difference may be calculated. TRP One of the N CSI-RSs may be a reference CSI-RS. TRP Each of the −1 time differences is the average delay of the reference CSI-RS and N TRP Even if the difference between the average delay of one CSI-RS in the CSI-RSs and good.

[0488] The average delay of a given CSI-RS is calculated based on the QCL assumptions applied to the given CSI-RS, or For example, if the first CSI-RS is the second CSI-RS and the QCL, the average delay may be determined as follows: , may be estimated based on the second CSI-RS. For example, the average delay may be estimated from a channel carrying the second CSI-RS. The first CSI-RS may be QCL with the second CSI-RS, at least in terms of average delay.

[0489] The nth time difference is D n It may be expressed as D n is from 0 to A D Real value up to or -A D From A D The reference CSI-RS may be a real value up to If determined, D n is from 0 to A DThe reference CSI-RS may be a real value up to If determined by the parameter D n -A D From A D n can be a real number between 1 and N TRP The first time difference may be an integer from 0 to 1. The first time difference may be the difference between the average delay corresponding to the reference CSI-RS and the average delay corresponding to the reference CSI-RS. The first time difference may be 0. The nth time difference may correspond to the nth time difference index. When a time difference is set in the reporting amount configuration, the second to Nth time differences may be TRP The time difference index may be included in the CSI 940.

[0490] A D may be the maximum time difference. The maximum time difference may be determined by higher layer parameters. For example, A D may be the same as the CP length. The CP length may be determined by higher layer parameters. For example, the CP length may be determined for the PDSCH. It may be determined based on the carrier spacing setting. If extended CP is set, A D A may be the same as the extended CP length. D may be determined based on the terminal capabilities 960. D to the CP chief For example, A D may be an integer multiple of the CP length. The maximum time difference is N TRP -1 time difference. For example, the same maximum time difference can be given for N TRP May be applied to a -1 time difference.

[0491] N TRP -1 time difference index i is N TRP -1 time difference D n For example, The nth time difference index i is the nth time difference D n For example, the nth time difference index i may indicate a range of values ​​for the nth time difference Dn The quantization value of

[0492] Time difference D n may correspond to the time difference index i. For example, the time difference index i is the time difference D n is δ i or more, and δ i+1 D n from 0 to A D to For values ​​of δ i is i×A D / (M-2) is also acceptable. D n Ga-A D From A D For values ​​up to δ i A-A D +i×2A D / (M-2). The time difference index i being M-1 may mean that the time difference is 'out-of-range'. i may be an integer between 0 and M-1. M may be a quantization number. The quantization number may be determined by a higher layer parameter, or the quantization number may be determined by a higher layer parameter as the number of bits B. For example, M=2 B If a time difference is set in the report amount setting, the time difference included in CSI 940 may be The index i is (N TRP −1)×B bits. The number of bits B may be set to 0 if the extended CP is set. The determination may be based on whether the

[0493] The number of bits B (quantization number M) may be determined based on the CP length. For example, the number of bits B when an extended CP is set may be different from the number of bits B when an extended CP is not set.

[0494] The number of bits B (quantization number M) may be a fixed value. For example, D The number of bits B when is the first value is AD may be the same as the number of bits B when is the second value.

[0495] The terminal device 1 may calculate the frequency difference. For example, the reporting amount setting may include at least the frequency difference. If asynchronous CJT is set, the terminal device 1 may calculate the frequency difference. If asynchronous CJT is set, the frequency difference may be set in the reporting amount setting. If asynchronous CJT is not set, the terminal device 1 may calculate the frequency difference. It is not expected that the frequency difference will be set in the notification setting.

[0496] Terminal device 1 is N TRP For example, the terminal device 1 may calculate N TRP CSI-RS {910, ..., 910+N TRP -1} based on the frequency of N TRP -1 frequency difference can be calculated The terminal device 1 is TRP For example, N TRP CSI-RS {910, ..., 910+N TRP Based on the correlation values ​​between the multiple CSI-RS resources in each of the resource sets, the terminal device 1 may calculate the frequency. TRP CSI-RS {910, ..., 910+N TRP −1} may be determined for one antenna port. The first frequency difference may be the difference between the frequency associated with the first CSI-RS and the frequency associated with the second CSI-RS. The second frequency difference may be the difference between the frequency associated with the first CSI-RS and the frequency associated with the third CSI-RS. TRP The frequency difference of −1 is the frequency difference between the frequency associated with the first CSI-RS and the frequency associated with the Nth CSI-RS. TRP The difference between the frequency associated with the first CSI-RS and the frequency associated with the second CSI-RS may be calculated. The difference between the frequency associated with the first CSI-RS and the frequency associated with the first CSI-RS may not be calculated. The first CSI-RS may be referred to as a Reference CSI-RS.

[0497] Terminal device 1 is N TRP -1 frequency difference may be calculated. TRP One of the N CSI-RSs may be a reference CSI-RS. TRP Each of the -1 frequency differences is the frequency associated with the reference CSI-RS and N TRP and the frequency associated with one CSI-RS in the CSI-RSs. , may be the difference.

[0498] The nth frequency difference is F n It may be expressed as F n is from 0 to A F Real value up to or -A F mosquito et al.A F If the time difference and frequency difference are set in the report quantity setting, F n -A F From A F Only the frequency difference is set in the report amount setting. If so, F n is from 0 to A F n can be a real number between 1 and N TRP It is an integer up to The first frequency difference may be a difference between the frequency corresponding to the Reference CSI-RS and the frequency corresponding to the Reference CSI-RS. The first frequency difference may be 0. The nth frequency difference may be It may correspond to the nth frequency difference index. If the frequency difference is set in the report quantity setting, In this case, the second to Nth TRP Frequency difference indexes up to may be included in CSI 940.

[0499] A F may be the maximum frequency difference. The maximum frequency difference may be determined by higher layer parameters. For example, A FA may be half the subcarrier spacing or the subcarrier spacing. The subcarrier spacing may be determined by higher layer parameters. F The unit of A may be Hz. F The unit of may be ppm (Parts per million). The maximum frequency difference is N TRP For example, the same maximum frequency difference may be given for N TRP May be applied to a frequency difference of -1.

[0500] N TRP -1 frequency difference index k is N TRP -1 frequency difference F n It may correspond to. For example, the nth frequency difference index k is the nth frequency difference F n A range of values ​​may be specified. For example, the nth frequency difference index k is the nth frequency difference F n The quantization value of

[0501] Frequency difference F n may correspond to a frequency difference index k. For example, k is the frequency difference F n is δ k or more, and δ k+1 You may indicate that it is less than F. n from 0 to A F For values ​​up to δ k is k×A F / (M-2). F n Ga-A F From A F For values ​​up to , δ k A-A F +k×2A F The frequency difference index k may be M-1 / (M-2). The frequency difference may be 'out-of-range'. k is an integer between 0 and M-1. M may be a quantization factor, which is determined by higher layer parameters. The quantization number may be determined by the upper layer parameter as the number of bits C. For example, M=2 C If the frequency difference is set in the reporting quantity setting, the frequency difference index k may be (N TRP −1)×C bits. Including a frequency difference index k in CSI 940 may mean that CSI 940 includes a frequency difference. The number of bits C may be the same as the number of bits B. The number of bits C may be determined based on a subcarrier spacing setting μ.

[0502] The number of bits C (quantization number M) may be determined based on the subcarrier spacing.

[0503] The number of bits B (quantization number M) may be a fixed value. For example, D The number of bits B when is the first value is A D may be the same as the number of bits B when is the second value.

[0504] The terminal device 1 may calculate the phase difference. For example, the terminal device 1 may set at least the phase difference in the reporting amount setting. If asynchronous CJT is set, the terminal device 1 may calculate the phase difference. If asynchronous CJT is set, the phase difference may be set in the reporting amount setting. If asynchronous CJT is not set, the reporting amount setting It may not be expected that the phase difference is set to

[0505] Terminal device 1 is N TRP For example, the terminal device 1 may calculate N TRP CSI-RS {910, ..., 910+N TRP -1} based on the phase of N TRP -1 phase difference may be calculated. The terminal device 1 is N TRP It is possible to calculate N phases. TRPCSI-RS {910, ..., 910+N TRP −1} The terminal device 1 calculates the phase as the phase rotation amount for the unit matrix in the resource You may. N TRP CSI-RS {910, ..., 910+N TRP -1}, the phases corresponding to each of The phase difference may be determined for an Nth antenna port. The first phase difference may be a difference between a phase associated with the first CSI-RS and a phase associated with the second CSI-RS. The second phase difference may be a difference between a phase associated with the first CSI-RS and a phase associated with the third CSI-RS. TRP The phase difference of −1 is the phase associated with the first CSI-RS and the Nth CSI-RS. TRP The difference between the phase associated with the first CSI-RS and the phase associated with the second CSI-RS may be calculated. The difference between the phase associated with the first CSI-RS and the phase associated with the first CSI-RS may not be calculated. The first CSI-RS may be referred to as a reference CSI-RS.

[0506] The phase difference may be expressed as a phase rotation amount. For example, if the first phase is φ1 and the second phase is φ2, When the second phase is φ2, the phase difference Δφ may be (φ1-φ2), and the phase rotation amount may be exp(j*2π(φ1-φ2)).

[0507] Terminal device 1 is N TRP -1 phase difference may be calculated. TRP One of the N CSI-RSs may be a reference CSI-RS. TRP Each of the −1 phase differences is a phase associated with the reference CSI-RS and N CSI-RSs excluding the reference CSI-RS. TRP The difference between the phase associated with one CSI-RS in the CSI-RSs and It's okay to have one.

[0508] The nth phase difference is P n,m It may be expressed as P n,m is from 0 to A P Real value up to or -A P From A P n can be a real number between 1 and N TRP The first The phase difference may be the difference between the phase corresponding to the reference CSI-RS and the phase corresponding to the reference CSI-RS. The first phase difference may be 0. The nth phase difference may correspond to the nth phase difference index. When the phase difference is set in the reporting amount configuration, the second to Nth phase differences may be 0. TRP Phase difference up to The index may be included in the CSI 940.

[0509] A P may be the maximum phase difference. The maximum phase difference may be determined by higher layer parameters. For example, P n,m from 0 to A P For values ​​up to A P can be 2π. For example, P n,m Ga-A P From A P For values ​​up to A P may be π.

[0510] N TRP -1 phase difference index u is N TRP -1 phase difference P n,m For example, , the nth phase difference index u is the nth phase difference P n,m You may also specify a range of values ​​for , the nth phase difference index u is the nth phase difference P n,m The quantization value of

[0511] Phase difference P n,m may correspond to a phase difference index u. For example, the phase difference index u may correspond to a frequency difference P n,m quantized value δ u P n,m from 0 to A P For values ​​up to δ u u×A P / M may also be used.n,m Ga-A P From A P For values ​​up to δ u A-A P +u×2A P / M u may be an integer between 0 and M-1. M may be a quantization factor. The quantization factor may be determined by a higher layer parameter, and the quantization factor is expressed as the number of bits D. may be determined by higher layer parameters, e.g., M=2 D When the phase difference is set in the reporting amount setting, the phase difference index u is (N TRP -1)×D bits. The inclusion of the phase difference index u in the CSI 940 means that the CSI 940 includes a phase difference. The number of bits D may be determined based on the MCS setting.

[0512] nth phase difference P n,m may be calculated for subband m, where m is an integer between 1 and L. The fact that m is only 1 means that the n-th phase difference P n,1 is the entire band (e.g., one BWP) L may be equal to the number of CQI subbands. If the CQI report covers the entire band, the nth phase difference P n,m may correspond to the whole band. If the PMI or CQI report corresponds to a sub-band, the n-th phase difference P n,m is for the sub-band The number of sub-bands L may be the same as the number of sub-bands for PMI or CQI.

[0513] P n,m If corresponds to the entire band, N TRP CSI-RS {910, ..., 910+N TRP −1} may be a CSI-RS resource set. n,m If corresponds to a sub-band, then N TRPCSI-RS {910, ..., 910+N TRP -1} may each be a CSI-RS resource.

[0514] N TRP CSI-RS {910, ..., 910+N TRP -1} is a CSI-RS resource, The reference CSI-RS may be reported by one CRI. A CRI may be determined. One CRI may be included in CSI 940. CSI 940 may be comprised of at least one CRI.

[0515] N TRP CSI-RS {910, ..., 910+N TRP -1} is a CSI-RS resource set In this case, the reference CSI-RS is reported by one CSI-RS resource set indicator. The terminal device 1 may determine a reference CSI-RS. One CSI-RS resource set indicator may be included in the CSI 940. The CSI 940 may include at least one CSI-RS resource set indicator. It may also consist of a set indicator.

[0516] Various aspects of the device according to one aspect of this embodiment will be described below.

[0517] 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.

[0518] In addition, the terminal device 1 and part of the base station device 3 in the above-described embodiment are implemented by a computer. In this case, the control function may be realized by recording a program for realizing the control function on a computer-readable recording medium, and reading and executing the program recorded on the recording medium into a computer system.

[0519] 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.

[0520] Furthermore, the term "computer-readable recording medium" may include a medium that dynamically stores a program for 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, or a medium that stores a program for a fixed period of time, such as volatile memory within a computer system that serves as a server or client in such a case. The program may also be one that realizes part of the above-mentioned functions, or one that can realize the above-mentioned functions in combination with a program already stored in the computer system.

[0521] 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.

[0522] 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.

[0523] 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.

[0524] 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.

[0525] 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]

[0526] 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 900, 901 Upper layer parameters 910, 911, 912, 913 CSI-RS 920 CSI-RS Resource Set 930 CSI Resource Settings 940 CSI 950 CSI Report Settings 960 Terminal Capabilities

Claims

1. a receiver for receiving N CSI-RSs; a transmitter for transmitting CSI; a CSI resource configuration for the N CSI-RSs linked with a CSI report configuration for the CSI; When a frequency difference is set in a reporting amount setting in the CSI reporting setting, each of the N CSI-RSs is a CSI-RS resource set, and the CSI is configured with at least N-1 frequency difference indexes; When the reporting amount setting is set to a phase difference, each of the N CSI-RSs is The CSI is a resource, and the CSI is at least composed of N-1 phase difference indexes. Terminal device.

2. a transmitter for transmitting N CSI-RSs; a receiving unit for receiving CSI, a CSI resource configuration for the N CSI-RSs linked with a CSI report configuration for the CSI; When a frequency difference is set in a reporting amount setting in the CSI reporting setting, each of the N CSI-RSs is a CSI-RS resource set, and the CSI is configured with at least N-1 frequency difference indexes; When the reporting amount setting is set to a phase difference, each of the N CSI-RSs is The CSI is a resource, and the CSI is at least composed of N-1 phase difference indexes. Base station equipment.

3. A communication method for a terminal device, comprising: receiving N CSI-RSs; transmitting the CSI; a CSI resource configuration for the N CSI-RSs linked with a CSI report configuration for the CSI; When a frequency difference is set in a reporting amount setting in the CSI reporting setting, each of the N CSI-RSs is a CSI-RS resource set, and the CSI is configured with at least N-1 frequency difference indexes; When the reporting amount setting is set to a phase difference, each of the N CSI-RSs is The CSI is a resource, and the CSI is at least composed of N-1 phase difference indexes. Communication method.

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