Terminal device and base station device

Abstract

The present invention comprises a reception unit that receives NB downlink reference signals, and a transmission unit in which transmission of CSI is set. One downlink reference signal set includes the NB downlink reference signals. The CSI includes NR rRSRPs. The NR rRSRPs are related to some of the NB downlink reference signals. The nth downlink reference signal is related to an nth event. The CSI is transmitted in cases where the nth event occurs NC or more times, and the CSI is not transmitted in cases where all events occur less than NC times.

Description

Terminal device and base station device

[0001] The present invention relates to a terminal device and a base station device. This application claims priority to Japanese Patent Application No. 2024-117479, filed on July 23, 2024, the contents of which are incorporated herein by reference.

[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 equipment is also called eNodeB (evolved NodeB), and terminal equipment is also called UE (User Equipment). LTE is a cellular communication system in which areas covered by base station equipment are arranged in multiple cells. A single base station equipment may manage multiple serving cells.

[0003] 3GPP is currently studying the next-generation standard (NR: New Radio) to be proposed for 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 required to satisfy requirements for three scenarios: eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication) within a single technology framework.

[0004] 3GPP is currently studying the extension of services supported by NR (Non-Patent Document 2, Non-Patent Document 3, and Non-Patent Document 4).

[0005] "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT docomo, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th - 10th March, 2016. “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 “Release 18 package summary”, RP-213469, RAN chairman, RAN1 chairman, RAN2 chairman, RAN3 chairman, 3GPP TSG RAN Meeting #94-e, 6th ― 17th December, 2021“Summary for RAN Rel-19 Package: RAN1 / 2 / 3-led”, RP-232745,RAN chair, 3GPP TSG RAN Meeting #102, 11th ― 15th December, 2023

[0006] One aspect of 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.

[0007] (1) A first aspect of the present invention is a terminal device, B a receiver configured to receive downlink reference signals; and a transmitter configured to transmit CSI, wherein one downlink reference signal set includes N B the downlink reference signals, and the CSI includes N R Contains rRSRPs, N R The rRSRP is N B n-th downlink reference signal is associated with a portion of the downlink reference signals, and the n-th downlink reference signal is associated with an n-th event, and the n-th event is CIf the event occurs more than once, the CSI is transmitted and all the events are C If it occurs less than once, the CSI is not transmitted.

[0008] (2) A second aspect of the present invention is a base station device, B a transmitter configured to transmit downlink reference signals; and a receiver configured to receive CSI, wherein one downlink reference signal set includes N B the downlink reference signals, and the CSI includes N R Contains rRSRPs, N R The rRSRP is N B n-th downlink reference signal is associated with a portion of the downlink reference signals, and the n-th downlink reference signal is associated with an n-th event, and the n-th event is C If the event occurs more than once, the CSI is transmitted and all the events are C If it occurs less than once, the CSI is not transmitted.

[0009] According to one aspect of the present invention, a terminal device can perform communication efficiently, and a base station device can perform communication efficiently.

[0010] 1 is a conceptual diagram of a wireless communication system according to an aspect of the present embodiment. The subcarrier spacing setting μ and the number of OFDM symbols per slot N according to an aspect of the present embodiment are shown. slot symb , and an example showing a relationship between CP (cyclic prefix) configuration. FIG. 1 is a diagram showing an example of a method for configuring a resource grid according to an aspect of the present embodiment. FIG. 2 is a diagram showing an example of the configuration of a resource grid 3001 according to an aspect of the present embodiment. FIG. 3 is a schematic block diagram showing an example of the configuration of a base station device 3 according to an aspect of the present embodiment. FIG. 4 is a schematic block diagram showing an example of the configuration of a terminal device 1 according to an aspect of the present embodiment. FIG. 5 is a diagram showing an example of the configuration of an SS / PBCH block according to an aspect of the present embodiment. FIG. 6 is a diagram showing an example of a monitoring opportunity for a search space set according to an aspect of the present embodiment. FIG. 7 is a diagram showing an example of CSI transmission when focusing on one downlink reference signal according to an aspect of the present embodiment. FIG. 8 is a diagram showing an example of CSI transmission when focusing on multiple downlink reference signals according to an aspect of the present embodiment.

[0011] Hereinafter, an embodiment of the present invention will be described.

[0012] floor(C) may be a floor function for real number C. For example, floor(C) may be a function that outputs the largest integer not exceeding 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 not below real number D. mod(E,F) may be a function that outputs the remainder when E is divided by F. mod(E,F) may be a function that outputs a value corresponding to the remainder when E is divided by F. exp(G) = e^G, where e is Napier's constant. H^I denotes H to the Ith power. max(J,K) is a function that outputs the maximum value of J and K. Here, max(J,K) is a function that outputs J or K when J and K are equal. min(L,M) is a function that outputs the maximum value of L and M. Here, min(L,M) is a function that outputs L or M when L and M are equal. round(N) is a function that outputs the integer value closest to N. "·" indicates multiplication.

[0013] 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 time domain unit of OFDM. The 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 Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) is used. In the uplink, either CP-OFDM or Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) is used. DFT-s-OFDM may be achieved by applying transform precoding to CP-OFDM.

[0014] 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.

[0015] 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, terminal devices 1A to 1C will also be referred to as terminal device 1 (UE#1: User Equipment#1).

[0016] The base station device 3 may be configured to include one or more transmitting devices (or transmission points, transmitting / receiving devices, or transmitting / receiving points). When the base station device 3 is configured by multiple transmitting devices, the multiple transmitting devices may be located at different positions.

[0017] 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.

[0018] 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 two or more downlink component carriers and one or both of two or more uplink component carriers. Downlink component carriers and uplink component carriers are also collectively referred to as component carriers (carriers).

[0019] 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.

[0020] The resource grid is size，μ grid，x N RB sc where the resource grid includes common resource blocks N start，μ grid，x Also, common resource block N start，μ grid，x is also called the reference point of the resource grid.

[0021] The resource grid is subframe，μ symb It contains OFDM symbols.

[0022] The subscript x added to the resource grid related parameters indicates the transmission direction, for example, the subscript x may be used to indicate either the downlink or the uplink.

[0023] N size，μ grid，x is the offset setting indicated by a parameter provided by the RRC layer (e.g., the parameter CarrierBandwidth). start，μ grid，x is a band configuration indicated by a parameter provided by the RRC layer (for example, the parameter OffsetToCarrier). The offset configuration and band configuration are configurations used to configure an SCS-specific carrier.

[0024] The subcarrier spacing (SCS: SubCarrier Spacing) Δf for a certain subcarrier spacing setting μ is Δf = 2 μ It may be 15 kHz. Here, the subcarrier spacing setting μ may represent any of 0, 1, 2, 3, or 4.

[0025] 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, when the subcarrier spacing setting μ is 2 and the CP setting is an extended cyclic prefix (CP), N slot symb = 12, N frame，μ slot = 40, N subframe，μ slot =4.

[0026] 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 = 4096. The constant κ is κ = Δf max ・N f / (Δf ref N f，ref ) = 64. Δf ref is 15 kHz. f，ref is 2048.

[0027] The transmission of the signal in the downlink and / or the transmission of the signal in the uplink may be 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 is composed of 10 subframes. The length of a subframe is T sf =(Δf max N f / 1000) T s = 1 ms. The number of OFDM symbols per subframe is N subframe，μ symb = N slot symb N subframe，μ slot is.

[0028] An OFDM symbol is a time domain unit of a communication method. 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.

[0029] A slot may consist of multiple OFDM symbols, for example, N consecutive OFDM symbols. slot symbFor example, in the normal CP setting, N OFDM symbols may constitute one slot. slot symb In addition, in the setting of the extended CP, N slot symb =12.

[0030] 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 is the number of subframes from 0 to N subframe，μ slot The number and index of slots included in the radio frame may be given for the subcarrier spacing setting μ. μ s，f ranges from 0 to N in the radio frame. frame，μ slot The values ​​may be given in ascending order as integers ranging from -1.

[0031] 3 is a diagram illustrating an example of a method for configuring a resource grid according to one aspect of the present embodiment. The horizontal axis of FIG. 3 represents the frequency domain. In FIG. 3, the subcarrier spacing μ １ and the subcarrier spacing μ ２ 3 shows an example of the configuration of a resource grid of μ. In this way, one or more subcarrier spacings may be set for a certain component carrier. １ = μ ２ -1, various aspects of the present embodiment １ = μ ２ It is not limited to the condition of -1.

[0032] The component carrier 300 is a band having a predetermined width in the frequency domain.

[0033] A point 3000 is an identifier for identifying a certain subcarrier. The point 3000 is also called point A. A common resource block (CRB) set 3100 is a set of subcarrier intervals μ １ is the set of common resource blocks for

[0034] In the common resource block set 3100, the common resource block including the point 3000 (the black block in the common resource block set 3100 in FIG. 3 ) is also referred to as 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.

[0035] 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 determined by the subcarrier spacing setting μ １ The resource grid 3001 is represented by the number of common resource blocks for N size，μ grid１，x It contains common resource blocks.

[0036] 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

[0037] The common resource block set 3200 is a set of subcarrier spacing μ ２ is the set of common resource blocks for

[0038] 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.

[0039] The offset 3012 is the offset from the reference point of the common resource block set 3200 to the reference point of the resource grid 3002. The offset 3012 is the offset from the reference point of the common resource block set 3200 to the reference point of the resource grid 3002. ２ The resource grid 3002 is represented by the number of common resource blocks relative to the N size，μ grid２，x It contains common resource blocks.

[0040] 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

[0041] 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 the OFDM symbol index l sym and the vertical axis is the subcarrier index k sc The resource grid 3001 is size，μ grid１，x N RB sc contains N subcarriers, subframe，μ symb Within the resource grid, subcarrier index k sc and OFDM symbol index l sym The resource specified by is also called a resource element (RE).

[0042] Resource Block (RB) is N RBsc A resource block is a collective term for a common resource block, a physical resource block (PRB), and a virtual resource block (VRB). RB sc =12.

[0043] 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.

[0044] The common resource blocks for a given subcarrier spacing setting μ are indexed in a given common resource block set in the frequency domain in ascending order starting from 0. The common resource block with index 0 for a given subcarrier spacing setting μ contains (or collides with, or coincides with) point 3000. The index n of the common resource block for a given subcarrier spacing setting μ μ CRB is n μ CRB = ceil(k sc / N RB sc ) relationship is satisfied. Here, k sc The subcarrier with .gt.=0 is a subcarrier having the same center frequency as the subcarrier corresponding to point 3000.

[0045] The physical resource blocks for a given subcarrier spacing setting μ are indexed in the frequency domain in ascending order starting from 0 in a given BWP. 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，μBWP，i denotes the reference point of the BWP with index i.

[0046] A BWP is defined as a subset of common resource blocks contained in the resource grid. start，μ BWP，i Starting with N size，μ BWP，i The BWP configured for a downlink carrier is also referred to as a downlink BWP. The BWP configured for an uplink component carrier is also referred to as an uplink BWP.

[0047] An antenna port may be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. For example, a channel may correspond to a physical channel, a symbol may correspond to an OFDM symbol, a symbol may correspond to a resource block unit, or a symbol may correspond to a resource element.

[0048] When the large-scale properties of a 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 properties may include at least long-range properties of the channel. The large-scale properties may include at least some or all of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. The first and second antenna ports being QCL with respect to beam parameters may mean that a receive beam assumed by the receiver for the first antenna port is the same as (or corresponds to) a receive beam assumed by the receiver for the second antenna port. The first antenna port and the second antenna port being QCLs in terms of beam parameters may mean that the transmission beam assumed by the receiving side for the first antenna port and the transmission beam assumed by the receiving side for the second antenna port are the same (or correspond to each other). The terminal device 1 may assume that the two antenna ports are QCLs if the large-scale characteristics of a 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 being QCLs may mean that the two antenna ports are assumed to be QCLs. The large-scale characteristics may be referred to as QCL parameters.

[0049] The QCL type may be any of type A, type B, type C, and type D.

[0050] The fact that the two antenna ports are (with respect to) type A QCLs may mean that a first large-scale characteristic of a channel through which symbols are conveyed at one antenna port can be estimated from a channel through which symbols are conveyed at another antenna port. The fact that the two antenna ports are (with respect to) type B QCLs may mean that a second large-scale characteristic of a channel through which symbols are conveyed at one antenna port can be estimated from a channel through which symbols are conveyed at another antenna port. The fact that the 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 conveyed at one antenna port can be estimated from a channel through which symbols are conveyed at another antenna port. The fact that the 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 conveyed at one antenna port can be estimated from a channel through which symbols are conveyed 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 the Doppler shift and Doppler spread. The third large-scale characteristic may include all of the Doppler shift and average delay. The fourth large-scale characteristic may include spatial reception parameters (spatial direction information, beam information). An antenna port for a DMRS may be a DMRS port. An antenna port for a PTRS may be a PTRS port. An antenna port associated with a PTRS may be a PTRS port. An antenna port for an SRS may be an SRS port. An antenna port for a DMRS may be a DMRS port. An antenna port associated with a DMRS may be a DMRS port.

[0051] Carrier aggregation may be performing communication using a plurality of aggregated serving cells. Also, carrier aggregation may be performing communication using a plurality of aggregated component carriers. Also, carrier aggregation may be performing communication using a plurality of aggregated downlink component carriers. Also, carrier aggregation may be performing communication using a plurality of aggregated uplink component carriers.

[0052] 5 is a schematic block diagram showing an example 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 transceiver unit (physical layer processing unit) 30 and / or part or all of a higher layer processing unit 34. The radio transceiver unit 30 includes at least an antenna unit 31, an RF (Radio Frequency) unit 32, and part or all of a baseband unit 33. The higher layer processing unit 34 includes at least a medium access control layer processing unit 35 and part or all of a radio resource control (RRC) layer processing unit 36.

[0053] The wireless transceiver 30 includes at least a wireless transmitter 30a and part or all of a wireless receiver 30b. Here, 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. Furthermore, 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. Furthermore, the antenna unit included in the wireless transmitter 30a and the antenna unit included in the wireless receiver 30b may have the same or different device configurations.

[0054] For example, the radio transmitting unit 30a may generate and transmit a PDSCH baseband signal. For example, the radio transmitting unit 30a may generate and transmit a PDCCH baseband signal. For example, the radio transmitting unit 30a may generate and transmit a PBCH baseband signal. For example, the radio transmitting unit 30a may generate and transmit a synchronization signal baseband signal. For example, the radio transmitting unit 30a may generate and transmit a PDSCH DMRS baseband signal. For example, the radio transmitting unit 30a may generate and transmit a PDCCH DMRS baseband signal. For example, the radio transmitting unit 30a may generate and transmit a CSI-RS baseband signal. For example, the radio transmitting unit 30a may generate and transmit a DL PTRS baseband signal.

[0055] For example, the radio receiving unit 30b may receive a PRACH. For example, the radio receiving unit 30b may receive and demodulate a PUCCH. The radio receiving unit 30b may receive and demodulate a PUSCH. For example, the radio receiving unit 30b may receive a PUCCH DMRS. For example, the radio receiving unit 30b may receive a PUSCH DMRS. For example, the radio receiving unit 30b may receive an UL PTRS. For example, the radio receiving unit 30b may receive an SRS.

[0056] 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.

[0057] The medium access control layer processing unit 35 included in the upper layer processing unit 34 performs MAC layer processing.

[0058] The radio resource control layer processing unit 36 ​​included in the upper layer processing unit 34 performs processing of the RRC layer. The radio resource control layer processing unit 36 ​​manages various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 36 ​​sets parameters based on an RRC message received from the terminal device 1. For example, setting upper layer parameters may mean setting parameters based on a received RRC message. For example, receiving upper layer parameters may mean setting parameters based on a received RRC message.

[0059] The radio transceiver 30 (or the radio transmitter 30a) performs processes such as modulation and encoding. The radio transceiver 30 (or the radio transmitter 30a) generates a physical signal by modulating, encoding, and generating a baseband signal (converting into a time-continuous signal) downlink data, and transmits the physical signal to the terminal device 1. The radio transceiver 30 (or the radio transmitter 30a) may allocate the physical signal to a certain component carrier and transmit the physical signal to the terminal device 1.

[0060] The radio transceiver unit 30 (or the radio receiver unit 30b) performs processes such as demodulation and decoding. The radio transceiver unit 30 (or the radio receiver unit 30b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 34. The radio transceiver unit 30 (or the radio receiver unit 30b) may perform a channel access procedure prior to transmitting the physical signal.

[0061] 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.

[0062] The baseband unit 33 converts the analog signal input from the RF unit 32 into a digital signal. The baseband unit 33 removes a portion corresponding to a cyclic prefix (CP) from the converted digital signal, and performs a fast Fourier transform (FFT) on the signal from which the CP has been removed to extract a signal in the frequency domain.

[0063] 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, generates baseband digital signals, and converts the baseband digital signals into analog signals. The baseband unit 33 outputs the converted analog signals to the RF unit 32.

[0064] The RF unit 32 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 33, upconverts the analog signal to a carrier frequency, and transmits the carrier frequency 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.

[0065] One or more serving cells (or component carriers, downlink component carriers, uplink component carriers) may be configured for the terminal device 1.

[0066] Each of the serving cells configured for the terminal device 1 may be any of a PCell (Primary cell), a PSCell (Primary SCG cell), and an SCell (Secondary Cell).

[0067] The PCell is a serving cell included in a Master Cell Group (MCG). The PCell is a cell on which the terminal device 1 performs an initial connection establishment procedure or a connection re-establishment procedure (a cell on which the procedure has been performed).

[0068] The PSCell is a serving cell included in an SCG (Secondary Cell Group). The PSCell is a serving cell to which random access is performed by the terminal device 1.

[0069] An SCell may be included in either an MCG or an SCG.

[0070] A serving cell group (cell group) is a term that includes at least an MCG and an SCG. A serving cell group may include one or more serving cells (or component carriers). One or more serving cells (or component carriers) included in a serving cell group may be operated by carrier aggregation.

[0071] One or more downlink BWPs may be configured for each serving cell (or downlink component carrier). One or more uplink BWPs may be configured for each serving cell (or uplink component carrier).

[0072] Of one or more downlink BWPs configured for a serving cell (or a downlink component carrier), one downlink BWP may be configured as an active downlink BWP (or one downlink BWP may be activated). Of one or more uplink BWPs configured for a serving cell (or an uplink component carrier), one uplink BWP may be configured as an active uplink BWP (or one uplink BWP may be activated).

[0073] 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 may be transmitted in an active uplink BWP. The terminal device 1 may transmit the PUCCH and PUSCH in an active uplink BWP. The active downlink BWP and the active uplink BWP are also collectively referred to as an active BWP.

[0074] The PDSCH, PDCCH, and CSI-RS do not have to be received in a downlink BWP (inactive downlink BWP) other than an active downlink BWP. The terminal device 1 does not have to attempt to receive the PDSCH, PDCCH, and CSI-RS in a downlink BWP that is not an active downlink BWP. The PUCCH and PUSCH do not have to be transmitted in an uplink BWP (inactive uplink BWP) that is not an active uplink BWP. The terminal device 1 does not have to transmit the PUCCH and PUSCH in an uplink BWP that is not an active uplink BWP. The inactive downlink BWP and the inactive uplink BWP are collectively referred to as the inactive BWP.

[0075] A downlink BWP switch is a procedure for deactivating one active downlink BWP of a serving cell and activating one of the inactive downlink BWPs of the serving cell. The downlink BWP switch may be controlled by a BWP field included in downlink control information. The downlink BWP switch may also be controlled based on higher layer parameters.

[0076] The uplink BWP switching is used to deactivate one active uplink BWP and activate one of the inactive uplink BWPs other than the one active uplink BWP. The uplink BWP switching may be controlled by a BWP field included in the downlink control information. The uplink BWP switching may also be controlled based on higher layer parameters.

[0077] Of one or more downlink BWPs configured for a serving cell, two or more downlink BWPs may not be configured as active downlink BWPs.For a serving cell, one downlink BWP may be active at a given time.

[0078] Of one or more uplink BWPs configured for a serving cell, two or more uplink BWPs may not be configured as active uplink BWPs. At any given time, one uplink BWP may be active for a serving cell.

[0079] 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 a radio transmission / reception unit (physical layer processing unit) 10 and one or all of an upper layer processing unit 14. The radio transmission / reception unit 10 includes at least an antenna unit 11, an RF unit 12, and some 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 some or all of a radio resource control layer processing unit 16.

[0080] The wireless transceiver 10 includes at least a wireless transmitter 10a and part or all of a wireless receiver 10b. Here, the baseband unit 13 included in the wireless transmitter 10a and the baseband unit 13 included in the wireless receiver 10b may have the same or different device configurations. Furthermore, the RF unit 12 included in the wireless transmitter 10a and the RF unit 12 included in the wireless receiver 10b may have the same or different device configurations. Furthermore, the antenna unit 11 included in the wireless transmitter 10a and the antenna unit 11 included in the wireless receiver 10b may have the same or different device configurations.

[0081] For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PRACH. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PUCCH. The radio transmitting unit 10a may generate and transmit a baseband signal for a PUSCH. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PUCCH DMRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a PUSCH DMRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for a UL PTRS. For example, the radio transmitting unit 10a may generate and transmit a baseband signal for an SRS.

[0082] For example, the wireless receiving unit 10b may receive and demodulate a PDSCH. For example, the wireless receiving unit 10b may receive and demodulate a PDCCH. For example, the wireless receiving unit 10b may receive and demodulate a PBCH. For example, the wireless receiving unit 10b may receive a synchronization signal. For example, the wireless receiving unit 10b may receive a PDSCH DMRS. For example, the wireless receiving unit 10b may receive a PDCCH DMRS. For example, the wireless receiving unit 10b may receive a CSI-RS. For example, the wireless receiving unit 10b may receive a DL PTRS.

[0083] 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 packet data integration protocol layer, the radio link control layer, and the RRC layer.

[0084] The medium access control layer processing unit 15 included in the upper layer processing unit 14 performs MAC layer processing.

[0085] The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing of the RRC layer. The radio resource control layer processing unit 16 manages various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 16 sets RRC parameters based on an RRC message received from the base station device 3. For example, setting upper layer parameters may mean setting parameters based on a received RRC message. For example, receiving upper layer parameters may mean setting parameters based on a received RRC message.

[0086] The wireless transceiver 10 (or the wireless transmitter 10a) performs processes such as modulation and encoding. The wireless transceiver 10 (or the wireless transmitter 10a) generates a physical signal by modulating, encoding, and generating a baseband signal (converting to a time-continuous signal) the uplink data, and transmits the physical signal to the base station device 3. The wireless transceiver 10 (or the wireless transmitter 10a) may allocate the physical signal to a certain BWP (active uplink BWP) and transmit it to the base station device 3.

[0087] The radio transceiver unit 10 (or the radio receiver unit 10b) performs processes such as demodulation and decoding. The radio transceiver unit 10 (or the radio receiver unit 30b) may receive a physical signal in a certain BWP (active downlink BWP) of a certain serving cell. The radio transceiver unit 10 (or the radio receiver unit 10b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. The radio transceiver unit 10 (radio receiver unit 10b) may perform a channel access procedure prior to transmitting the physical signal.

[0088] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by quadrature demodulation (down-converts) and removes unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit 13.

[0089] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes a portion corresponding to a cyclic prefix (CP) from the converted digital signal, and performs a fast Fourier transform (FFT) on the signal from which the CP has been removed to extract a signal in the frequency domain.

[0090] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the uplink data to generate OFDM symbols, adds CPs to the generated OFDM symbols, generates baseband digital signals, and converts the baseband digital signals into analog signals. The baseband unit 13 outputs the converted analog signals to the RF unit 12.

[0091] The RF unit 12 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 13, upconverts the analog signal to a carrier frequency, and transmits the signal 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.

[0092] The physical signals (signals) will be explained below.

[0093] 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.

[0094] The uplink physical channel may correspond to a set of resource elements that transmit 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 the terminal device 1. The uplink physical channel may be received by the 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)

[0095] The PUCCH may be used to transmit uplink control information (UCI). The PUCCH may be transmitted to deliver, transmit, or convey the 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. The base station device 3 may receive the PUCCH in which the uplink control information is mapped.

[0096] The uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) includes at least some or all of channel state information (CSI), scheduling request (SR), and hybrid automatic repeat request ACKnowledgement (HARQ-ACK) information.

[0097] 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.

[0098] 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 decoding of the transport block has been successfully completed. The NACK may indicate that decoding of the transport block has not been successfully completed. The HARQ-ACK information may include a HARQ-ACK codebook including one or more HARQ-ACK bits.

[0099] A transport block is a sequence of information bits delivered from a higher layer. Here, the sequence of information bits is also called a bit sequence. Here, the transport block may be delivered via the Uplink-Shared Channel (UL-SCH) of the transport layer.

[0100] The HARQ-ACK for a transport block may be referred to as the HARQ-ACK for a PDSCH. In this case, the "HARQ-ACK for a PDSCH" refers to the HARQ-ACK for a transport block included in the PDSCH.

[0101] The HARQ-ACK may indicate an ACK or NACK corresponding to one CBG (Code Block Group) included in the transport block.

[0102] The scheduling request may be used at least to request UL-SCH resources for an initial transmission. 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 may indicate that UL-SCH resources for the initial transmission are requested by the terminal device 1. 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 UL-SCH resources for the initial transmission are not requested by the terminal device 1. A negative SR may indicate that a scheduling request is not triggered by a higher layer. A negative SR may be transmitted when a scheduling request is not indicated by a higher layer.

[0103] 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 the propagation path (e.g., propagation strength) or the quality of the physical channel, the PMI is an indicator related to the precoder, and the RI is an indicator related to the transmission rank (or the number of transmission layers).

[0104] The channel state information is an indicator related to the reception state of at least a physical signal (e.g., CSI-RS) used for channel measurement. The value of the channel state information may be determined by the terminal device 1 based on the reception state assumed by at least a physical signal used for channel measurement. The channel measurement may include interference measurement.

[0105] 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.

[0106] The PUSCH may be used to transmit one or both of a transport block and uplink control information. The transport block may be allocated to the PUSCH. The transport block delivered by the UL-SCH may be allocated to the PUSCH. The uplink control information may be allocated to the PUSCH. The terminal device 1 may transmit a PUSCH in which one or both of a transport block and uplink control information are allocated. The base station device 3 may receive a PUSCH in which one or both of a transport block and uplink control information are allocated.

[0107] The PRACH may be transmitted to transmit a random access preamble. The terminal device 1 may transmit the PRACH. The base station device 3 may receive the PRACH. The PRACH sequence x u，v (n) x u，v (n) = x u (mod(n+C v , L RA ) where x u is a ZC (Zadoff-Chu) series. u x u =exp(-jπui(i+1) / L RA ) where 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. RAis 839 or 139. Also, i ranges from 0 to L RA is an integer in the range of -1, and u is the sequence index for the PRACH sequence.

[0108] For each PRACH opportunity, 64 random access preambles are defined. The random access preambles are cyclically shifted C v , and the sequence index u for the PRACH sequence. An index may be assigned to each of the 64 identified random access preambles.

[0109] 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 the physical layer. The uplink physical signal may be a physical signal used in an uplink component carrier. The terminal device 1 may transmit the uplink physical signal. The base station device 3 may receive the uplink physical signal. 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)

[0110] UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0111] A set of antenna ports for DMRSs for a PUSCH (DMRSs associated with a PUSCH, DMRSs included in a PUSCH, and DMRSs corresponding to a PUSCH) may be given based on the set of antenna ports for the PUSCH. For example, the set of antenna ports for DMRSs for a PUSCH may be the same as the set of antenna ports for the PUSCH.

[0112] The transmission of the PUSCH and the transmission of the DMRS for the PUSCH may be indicated (or scheduled) by one DCI format. The PUSCH and the DMRS for the PUSCH may be collectively referred to as the PUSCH. Transmitting the PUSCH may be equivalent to transmitting the PUSCH and the DMRS for the PUSCH.

[0113] The propagation path of the PUSCH may be estimated from the DMRS for the PUSCH.

[0114] 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.

[0115] The transmission of a PUCCH and the transmission of a DMRS for the PUCCH may be indicated (or triggered) by one DCI format. One or both of the mapping of the PUCCH to resource elements and the mapping of the DMRS for the PUCCH to resource elements may be provided by one PUCCH format. The PUCCH and the DMRS for the PUCCH may be collectively referred to as the PUCCH. Transmitting a PUCCH may also mean transmitting a PUCCH and a DMRS for the PUCCH.

[0116] The propagation path of the PUCCH may be estimated from the DMRS for the PUCCH.

[0117] The downlink physical channel may correspond to a set of resource elements that transmit 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 the present 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)

[0118] 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 allocated to a Broadcast Control Channel (BCCH), which is a logical channel of the MAC layer. The BCCH is allocated to a BCH, which is a channel of the transport layer. The BCH may be mapped to the PBCH. The terminal device 1 may receive a PBCH in which one or both of the MIB and physical layer control information are allocated. The base station device 3 may transmit a PBCH in which one or both of the MIB and physical layer control information are allocated.

[0119] For example, the physical layer control information may be composed of 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

[0120] 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.

[0121] 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 include five subframes. Alternatively, a half radio frame may include the first five subframes of ten subframes included in a radio frame. Alternatively, a half radio frame may include the last five subframes of ten subframes included in a radio frame.

[0122] The SS / PBCH block index bits are used to indicate the SS / PBCH block index. The SS / PBCH block index bits include three bits. The SS / PBCH block index bits may be configured with three bits of a six-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.

[0123] 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.

[0124] 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 may receive the PDCCH in which the downlink control information is arranged. The base station device 3 may transmit the PDCCH in which the downlink control information is arranged.

[0125] 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 also be interpreted as a set of downlink control information set in a certain downlink control information format.

[0126] DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats. The uplink 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.

[0127] DCI format 0_0 is used at least for scheduling of PUSCHs allocated to a certain cell. DCI format 0_0 includes at least some or all of fields 1A to 1E. 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)

[0128] The DCI format identification field may indicate whether the DCI format including the DCI format identification field is an uplink DCI format or a downlink DCI format. That is, the DCI format identification field may be included in both the uplink DCI format and the downlink DCI format. Here, the DCI format identification field included in DCI format 0_0 may indicate 0.

[0129] 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.

[0130] 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.

[0131] The frequency hopping flag field may be used to indicate whether frequency hopping is applied to the PUSCH.

[0132] The MCS field included in DCI format 0_0 may be used to indicate at least one or both of a modulation scheme and a target coding rate for the PUSCH. The target coding rate may be a target coding rate for a transport block assigned to the PUSCH. The size of the transport block (TBS) assigned to the PUSCH may be determined based on one or both of the target coding rate and the modulation scheme for the PUSCH.

[0133] DCI format 0_0 may not include fields used for CSI requests.

[0134] 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 may be the same as the serving cell of the uplink component carrier on which the PDCCH including DCI format 0_0 is allocated. By detecting DCI format 0_0 on a downlink component carrier of a serving cell, the terminal device 1 may recognize that the PUSCH scheduled by DCI format 0_0 is allocated on the uplink component carrier of the serving cell.

[0135] DCI format 0_0 may not include a BWP field (BWP indication field). Here, DCI format 0_0 may be a DCI format for scheduling a PUSCH without changing the active uplink BWP. Based on detecting DCI format 0_0 used for scheduling a PUSCH, the terminal device 1 may recognize that the PUSCH will be transmitted without switching the active uplink BWP.

[0136] DCI format 0_1 ​​is used at least for scheduling of PUSCHs allocated to a certain cell. DCI format 0_1 ​​includes at least some or all of fields 2A to 2H. 2A) DCI format specific field 2B) Frequency domain resource allocation field 2C) Uplink time domain resource allocation field 2D) Frequency hopping flag field 2E) MCS field 2F) CSI request field 2G) BWP field 2H) Carrier indicator field

[0137] The DCI format specific field included in DCI format 0_1 ​​may indicate 0.

[0138] 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.

[0139] 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.

[0140] The MCS field included in DCI format 0_1 ​​may be used to indicate at least part or all of the modulation scheme and / or target coding rate for the PUSCH.

[0141] The BWP field of DCI format 0_1 ​​may be used to indicate an uplink BWP in which a PUSCH scheduled by the DCI format 0_1 ​​is arranged. That is, 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 DCI format 0_1 ​​used for scheduling the PUSCH.

[0142] The DCI format 0_1 ​​that does not include a BWP field may be a DCI format for scheduling a PUSCH without changing the active uplink BWP. The terminal device 1 may recognize that the PUSCH is to be transmitted without switching the active uplink BWP based on detecting the DCI format D0_1 that is DCI format 0_1 ​​used for scheduling a PUSCH and does not include a BWP field.

[0143] If the DCI format 0_1 ​​includes a BWP field but the terminal device 1 does not support the BWP switching function using the DCI format 0_1, the BWP field may be ignored by the terminal device 1. That is, a terminal device 1 that does not support the BWP switching function may recognize that it transmits the PUSCH without switching the active uplink BWP based on detecting DCI format 0_1 ​​that is used for PUSCH scheduling and includes the BWP field. Here, 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.

[0144] The CSI request field is used to indicate the reporting of CSI.

[0145] When DCI format 0_1 ​​includes a carrier indicator field, the carrier indicator field may be used to indicate an uplink component carrier on which a PUSCH is arranged. When DCI format 0_1 ​​does not include a carrier indicator field, the uplink component carrier on which a PUSCH is arranged may be the same as an uplink component carrier on which a PDCCH including DCI format 0_1 ​​used for scheduling the PUSCH is arranged. When the number of uplink component carriers configured in a 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 number of bits of the carrier indicator field included in DCI format 0_1 ​​used for scheduling a PUSCH arranged in the certain serving cell group may be one bit or more (e.g., three bits). When the number of uplink component carriers configured for a terminal device 1 in a certain serving cell group is 1 (when uplink carrier aggregation is not operated in a certain serving cell group), the number of bits in the carrier indicator field included in DCI format 0_1 ​​used for scheduling a PUSCH placed in the certain serving cell group may be 0 bits (or the carrier indicator field may not be included in DCI format 0_1 ​​used for scheduling a PUSCH placed in the certain serving cell group).

[0146] DCI format 1_0 is used at least for scheduling PDSCHs allocated to a certain cell. DCI format 1_0 includes at least some or all of 3A to 3F. 3A) DCI format specific field, 3B) Frequency domain resource allocation field, 3C) Time domain resource allocation field, 3D) MCS field, 3E) PDSCH to HARQ feedback timing indicator field, and 3F) PUCCH resource indicator field.

[0147] The DCI format specific field included in DCI format 1_0 may indicate 1.

[0148] 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.

[0149] 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.

[0150] The MCS field included in DCI format 1_0 may be used to indicate at least one or both of a modulation scheme and a target coding rate for the PDSCH. The target coding rate may be a target coding rate for a transport block allocated to the PDSCH. The size of the transport block (TBS) allocated to the PDSCH may be determined based on one or both of the target coding rate and the modulation scheme for the PDSCH.

[0151] The PDSCH_HARQ feedback timing indication field may be used to indicate the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH.

[0152] 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.

[0153] 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 allocated may be the same as the downlink component carrier on which the PDCCH including DCI format 1_0 is allocated. By detecting DCI format 1_0 on a certain downlink component carrier, the terminal device 1 may recognize that the PDSCH scheduled by DCI format 1_0 is allocated to the downlink component carrier.

[0154] DCI format 1_0 may not include a BWP field. Here, DCI format 1_0 may be a DCI format for scheduling a PDSCH without changing the active downlink BWP. Based on detecting DCI format 1_0 used for scheduling a PDSCH, the terminal device 1 may recognize that it will receive the PDSCH without switching the active downlink BWP.

[0155] 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. 4A) DCI format specific field, 4B) Frequency domain resource allocation field, 4C) Time domain resource allocation field, 4E) MCS field, 4F) PDSCH_HARQ feedback timing indication field, 4G) PUCCH resource indication field, 4H) BWP field, and 4I) Carrier indicator field.

[0156] The DCI format specific field included in DCI format 1_1 may indicate 1.

[0157] 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.

[0158] 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.

[0159] The MCS field included in DCI format 1_1 may be used to indicate at least one or both of the modulation scheme and the target coding rate for the PDSCH.

[0160] If DCI format 1_1 includes a PDSCH_HARQ feedback timing indication field, the PDSCH_HARQ feedback timing indication field may be used at least to indicate an offset 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.

[0161] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set.

[0162] The BWP field of DCI format 1_1 may be used to indicate the downlink BWP in which the PDSCH scheduled by DCI format 1_1 is arranged. That is, 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 by detecting DCI format 1_1 used for scheduling the PDSCH.

[0163] The DCI format 1_1 that does not include a BWP field may be a DCI format for scheduling a 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_1 that is used for scheduling a PDSCH and does not include a BWP field.

[0164] If DCI format 1_1 includes a BWP field but the terminal device 1 does not support the BWP switching function using DCI format 1_1, the BWP field may be ignored by the terminal device 1. In other words, a terminal device 1 that does not support the BWP switching function may recognize that it will receive the PDSCH without switching the active downlink BWP based on detecting DCI format 1_1 that is used for PDSCH scheduling and includes a BWP field. Here, 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.

[0165] When DCI format 1_1 includes a carrier indicator field, the carrier indicator field may be used to indicate a downlink component carrier on which a PDSCH is arranged. When DCI format 1_1 does not include a carrier indicator field, the downlink component carrier on which a PDSCH is arranged may be the same as a downlink component carrier on which 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 number of bits of the carrier indicator field included in DCI format 1_1 used for scheduling the PDSCH arranged in the certain serving cell group may be one bit or more (for example, three bits). When the number of downlink component carriers configured for a 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 number of bits in the carrier indicator field included in DCI format 1_1 used for scheduling the PDSCH placed in the certain serving cell group may be 0 bits (or the carrier indicator field may not be included in DCI format 1_1 used for scheduling the PDSCH placed in the certain serving cell group).

[0166] 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. A transport block may be allocated to the PDSCH. A transport block corresponding to the DL-SCH may be allocated to the PDSCH. The base station device 3 may transmit the PDSCH. The terminal device 1 may receive the PDSCH.

[0167] The downlink physical signal may correspond to a set of resource elements. The downlink physical signal does not need to 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 the present 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)

[0168] 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).

[0169] 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 represents a set of resource elements for the SSS. Four blocks (blocks 710, 711, 712, and 713) represent sets 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).

[0170] 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 allocated to the 57th to 183rd subcarriers in the first OFDM symbol. The SSS is allocated to the 57th to 183rd subcarriers in the third OFDM symbol. The 1st to 56th subcarriers in the first OFDM symbol may be set to zero. The 184th to 240th subcarriers in the first OFDM symbol may be set to zero. The 49th to 56th subcarriers in the third OFDM symbol may be set to zero. The 184th to 192nd subcarriers in the third OFDM symbol may be set to zero. The PBCH is allocated to the 1st to 240th subcarriers in the second OFDM symbol, which are subcarriers where the DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 48th subcarriers of the third OFDM symbol, and to subcarriers where DMRS for the PBCH is not allocated. The PBCH is allocated to the 193rd to 240th subcarriers of the third OFDM symbol, and to subcarriers where DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 240th subcarriers of the fourth OFDM symbol, and to subcarriers where DMRS for the PBCH is not allocated.

[0171] The antenna ports for the PSS, SSS, PBCH, and DMRS for the PBCH may be the same.

[0172] 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.

[0173] DL DMRS is a general term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.

[0174] The set of antenna ports for DMRS for PDSCH (DMRS related to PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) may be determined based on the set of antenna ports for the PDSCH, i.e., the set of antenna ports for DMRS for PDSCH may be the same as the set of antenna ports for the PDSCH.

[0175] The transmission of the PDSCH and the transmission of the DMRS for the PDSCH may be indicated (or scheduled) by one DCI format. The PDSCH and the DMRS for the PDSCH may be collectively referred to as the PDSCH. Transmitting the PDSCH may also mean transmitting the PDSCH and the DMRS for the PDSCH.

[0176] A propagation path of a PDSCH may be estimated from a DMRS for the PDSCH. If a set of resource elements carrying a certain PDSCH symbol and a set of resource elements carrying a DMRS symbol for the PDSCH are included in the same precoding resource group (PRG), the PDSCH carrying the PDSCH symbol for a certain antenna port may be estimated by the DMRS for the PDSCH.

[0177] 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.

[0178] A PDCCH may be estimated from a DMRS for the PDCCH. That is, a propagation path of a PDCCH may be estimated from a DMRS for the PDCCH. If the same precoder is applied (or assumed to be applied) to a set of resource elements on which a certain PDCCH symbol is transmitted and a set of resource elements on which a DMRS symbol for the PDCCH is transmitted, the PDCCH on which the PDCCH symbol for a certain antenna port is transmitted may be estimated by the DMRS for the PDCCH.

[0179] The BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels that define the relationship between physical layer channels and MAC layer channels (also called logical channels).

[0180] The BCH of the transport layer is mapped to the PBCH of the physical layer. That is, transport blocks carried on the BCH of the transport layer 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, transport blocks carried on the UL-SCH of the transport layer are delivered to the PUSCH of the physical layer. The DL-SCH of the transport layer is mapped to the PDSCH of the physical layer. That is, transport blocks carried on the DL-SCH of the transport layer are delivered to the PDSCH of the physical layer.

[0181] 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.

[0182] In the MAC layer, HARQ (Hybrid Automatic Repeat reQuest) control is performed for each transport block.

[0183] The BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel) are logical channels. For example, the BCCH is a channel of the RRC layer used for transmitting MIB or system information. The CCCH (Common Control CHannel) may be used for transmitting RRC messages common to multiple terminal devices 1. Here, the CCCH may be used, for example, for terminal devices 1 that are not RRC connected. The DCCH (Dedicated Control CHannel) may be used at least for transmitting RRC messages dedicated to the terminal device 1. Here, the DCCH may be used, for example, for terminal devices 1 that are RRC connected.

[0184] The terminal device 1 may transmit or receive higher layer parameters. The terminal device 1 may transmit or receive a message including the higher layer parameters. The message may be an RRC message or a MAC CE. The higher layer parameters may be RRC parameters.

[0185] Upper layer parameters common to multiple terminal devices 1 are also referred to as common upper layer parameters. Here, the common upper layer parameters may be defined as parameters specific to a serving cell. Here, the parameters specific to a serving cell may be parameters common to terminal devices (e.g., terminal devices 1-A, 1-B, and 1-C) in which the serving cell is configured.

[0186] For example, the common upper layer parameters may be included in an RRC message delivered on the BCCH. For example, the common upper layer parameters may be included in an RRC message 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 or DL-SCH of the transport layer. For example, a transport block containing MIB information is delivered to the BCH of the transport layer. A transport block containing system information other than MIB is delivered to the DL-SCH of the transport layer. The CCCH is mapped to the DL-SCH or UL-SCH. In other words, a transport block mapped to the CCCH is delivered to the DL-SCH or UL-SCH. The DCCH is mapped to the DL-SCH or UL-SCH. In other words, a transport block mapped to the DCCH is delivered to the DL-SCH or 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 RRC 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 (upper layer parameters) are RRC parameters or parameters included in MAC CE (Medium Access Control Control Element). That is, the upper layer parameters are a collective term for MIB, system information, messages corresponding to CCCH, messages corresponding to DCCH, and parameters included in MAC CE. The parameters included in MAC CE are transmitted by MAC CE (Control Element) commands.

[0191] The procedures performed by the terminal device 1 include at least some or all of the following steps 5A to 5C: 5A) Cell search, 5B) Random access, and 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 blocks 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 also called the transmission window, SS transmission window, or DRS (Discovery Reference Signal) transmission window. The SS burst set is a general term that includes at least the first SS burst set and the second SS burst set.

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

[0197] Random access (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 a 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 an index of an SS / PBCH block candidate detected based on a cell search. Each PRACH opportunity is defined based at least on resources in the time domain and the frequency domain.

[0199] The terminal device 1 transmits one random access preamble selected from among the PRACH opportunities corresponding to the index of the SS / PBCH block candidate from 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 (Random Access - Radio Network Temporary Identifier). Message 2 is a procedure by 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 attempts to detect a PDCCH including this DCI format in a control resource set given based on an MIB included in a PBCH included in an SS / PBCH block detected based on cell search and in resources indicated based on the setting of a search space set. Message 2 is also referred to as a random access response (RAR). The terminal device 1 may receive a random access response (or a random access response message) with a PDCCH / PDSCH as a message.

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

[0202] The PUSCH scheduled based on the random access response grant is either a message 3 PUSCH or a PUSCH. The message 3 PUSCH includes a contention resolution identifier (MAC CE). The contention resolution identifier (MAC CE) includes the contention 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 Cell-Radio Network Temporary Identifier (C-RNTI) or a TC-RNTI. The terminal device 1 receives a PDSCH scheduled 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 resources identified based on the control resource set and the search space set (monitors the PDCCH).

[0207] A control resource set (CORESET) is a set of resources consisting of a predetermined number of resource blocks and a predetermined number of OFDM symbols. In the frequency domain, a 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 a PDCCH in a search space set. Here, attempting to detect a PDCCH in a search space set may be attempting to detect a PDCCH candidate in the search space set, may be attempting to detect a DCI format in the search space set, may be attempting to detect a PDCCH in a control resource set, may be attempting to detect a PDCCH candidate in the control resource set, or may be attempting to detect a 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 attempts to detect PDCCH candidates in some or all of 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 UE-specific search space set.

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

[0212] The CSS set is a collective term for 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, and a Type 3 PDCCH common search space set. The USS set is also called a UE-specific PDCCH search space set.

[0213] A search space set is associated with (included in, corresponds to) a control resource set, and 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 space set, some or all of 6A to 6C may be indicated by higher layer parameters: 6A) PDCCH monitoring periodicity, 6B) PDCCH monitoring pattern within a slot, and 6C) PDCCH monitoring offset.

[0215] A monitoring occasion for a search space set may correspond to an OFDM symbol in which a first OFDM symbol of a control resource set associated with the search space set is located. A monitoring occasion for a search space set may correspond to resources of a control resource set starting from a first OFDM symbol of the control resource set associated with the search space set. The monitoring occasion for the search space set is determined based on at least some or all of a PDCCH monitoring interval, a PDCCH monitoring pattern within a slot, and a 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, a search area set 91 and a search area set 92 are set in a primary cell 301, a search area set 93 is set in a secondary cell 302, and a search area set 94 is set in a 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 search area set 91 is set to 1 slot, the monitoring offset of search area set 91 is set to 0 slot, and the monitoring pattern of search area set 91 is set to [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0]. That is, 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 search area set 92 is set to 2 slots, the monitoring offset of search area set 92 is set to 0 slots, and the monitoring pattern of search area set 92 is set to [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is, 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 search area set 93 is set to 2 slots, the monitoring offset of search area set 93 is set to 0 slots, and the monitoring pattern of search area set 93 is set to [0,0,0,0,0,0,0,1,0,0,0,0,0,0]. That is, 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 search area set 94 is set to 2 slots, the monitoring offset of search area set 94 is set to 1 slot, and the monitoring pattern of search area set 94 is set to [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is, 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 CRC (Cyclic Redundancy Check) sequence scrambled by a SI-RNTI (System Information-Radio Network Temporary Identifier).

[0223] The Type 0 aPDCCH common search space set may be used at least for DCI formats with a CRC (Cyclic Redundancy Check) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier).

[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 DCI formats with a CRC sequence scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI).

[0226] A Type 3 PDCCH common search space set may be used for a DCI format with a CRC sequence scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI).

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

[0229] In uplink communication, the terminal device 1 detects an 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 configured scheduling (configured grant), an uplink grant for scheduling a PUSCH is configured for each transmission period of the PUSCH. When a PUSCH is scheduled by an 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. That is, the configured scheduling may be either a configured scheduling type 1 or a 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 reception of certain higher layer parameters. The certain higher layer parameters may be configuredGrantConfig. For example, configuredGrantConfig may include rrc-ConfiguredUplinkGrant. The PUSCH transmission may be operated without detecting an uplink grant in DCI.

[0232] The configured scheduling type 2 PUSCH transmission may be semi-persistently scheduled. For example, it may be scheduled by a certain uplink grant. The certain uplink grant may be included in an activation DCI (or a valid activation DCI). 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 ｆmay 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 portion of the system frame number may be signaled in the MIB. For example, 6 bits (e.g., 6 most significant bits) of the 10-bit system frame number may be signaled in the MIB. At least a portion of the system frame number may be determined based on the PBCH that carries the MIB. For example, 4 bits (e.g., 4 least significant bits) of the 10-bit system frame number may be transmitted in the PBCH transport block as part of channel coding.

[0234] The PDCCH-Config may be a dedicated higher layer parameter. The PDCCH-Config may configure parameters for the PDCCH. Multiple (for example, up to three) CORESETs may be configured in the PDCCH-Config. A CORESET ID may be configured in one CORESET. One CORESET pool index may be configured 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. The PDCCH configuration may be PDCCH-Config.

[0236] The PDSCH-Config may be a dedicated higher layer parameter. The PDSCH-Config may configure parameters for the PDSCH.

[0237] When multiple PDCCH candidates (PDCCH candidate(s)) are associated with a search space set configured by a higher layer parameter, one PDCCH candidate is used. The one PDCCH candidate may be an earlier-started PDCCH candidate of the two PDCCH candidates. The higher layer parameter may be searchSpaceLinking.

[0238] Multiple TRPs (Transmission Reception Points, or Transmit / Receive Points) may be used. The base station device 3 may be configured with multiple TRPs (Multi-TRP). The terminal device 1 may be scheduled by two TRPs in one serving cell. In Multi-TRP, one of the operation modes of single-DCI and multi-DCI may be used. In Multi-TRP, uplink control may be completed in the MAC layer and the physical layer. In Multi-TRP, downlink control may be completed in the MAC layer and the physical layer. In Single-DCI mode, the terminal device 1 may be scheduled by the same DCI for multiple TRPs. In Multi-DCI mode, the terminal device 1 may be scheduled by independent DCI from each TRP.

[0239] One or both of the terminal device 1 and the base station device 3 may form a beam (beamforming). For example, one or both of the terminal device 1 and the base station device 3 may transmit radio waves (electromagnetic waves) in a specific spatial direction by beamforming. For example, one or both of the terminal device 1 and the base station device 3 may receive radio waves from a specific spatial direction by beamforming. One or more antennas may be provided and used for transmitting and / or receiving radio waves. A directional radio wave may be referred to as a beam. Information related to a beam may be referred to as beam information. For example, the beam information may be a specific spatial direction. For example, the beam information may be the direction of arrival of the radio waves. The beam information may be a TCI state. The beam information may be an uplink transmit spatial filter. The beam information may be an SRS resource indication. The beam information may be a QCL assumption or a QCL-related information.

[0240] 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.

[0241] The terminal device 1 may perform reception on the PDSCH. The base station device 3 may perform transmission on the PDSCH. One transmission method may be transmission method 1. In transmission method 1, it may be assumed that transmission on the PDSCH is performed using up to eight layers. Each layer may be mapped to one or more antenna ports. The one or more antenna ports may be some or all of the antenna ports 1000-1023. For example, if an extended CSI port is not configured, the one or more antenna ports may be some or all of the antenna ports 1000-1023. For example, if an extended CSI port is configured, the one or more antenna ports may be some or all of the antenna ports 1000-1127.

[0242] 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. PDSCH reception may be scheduled by a DCI format in the PDCCH. The PDSCH may be scheduled in the DCI format. The terminal device 1 may receive a scheduling grant in the DCI format. When the scheduling grant is received, downlink resource allocation may be used.

[0243] The terminal device 1 may be configured with an upper layer parameter TCI-State. For example, the terminal device 1 may be configured with one list in the upper layer parameter PDSCH-Config. One list may include up to M upper layer parameters TCI-State. One list may be a list of up to M upper layer parameters TCI-State. The terminal device 1 may be configured with one list to decode (receive) a PDSCH according to a PDCCH with DCI. M may depend on the terminal capability. For example, M may depend on the terminal capability maxNumberConfiguredTCIStatePerCC. TCI-State may be referred to as a TCI state.

[0244] Each TCI-State may include parameters for setting a QCL (Quasi co-location relationship). The QCL relationship may be a relationship between one or two downlink reference signals (downlink physical signals) and a DMRS (DMRS port) of a PDSCH. The QCL relationship may be a relationship between one or two downlink reference signals (downlink physical signals) and a DMRS (DMRS port) of a PDCCH. The QCL relationship may be a relationship between one or two downlink reference signals (downlink physical signals) and a CSI-RS (CSI-RS port) of one CSI-RS resource. For example, the QCL relationship between channel / signal A and channel / signal B may indicate that channel / signal A is QCL with channel / signal B.

[0245] The QCL relationship may be set by one or both of the higher layer parameters qcl-Type1 and qcl-Type2. For example, the QCL relationship may be set by one or both of the higher layer parameters qcl-Type1 for a first downlink reference signal (DL RS) and qcl-Type2 for a second downlink reference signal. If the first downlink reference signal and the second downlink reference signal are 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.

[0246] One list may be configured by the upper layer parameter dlOrJointTCI-StateList. For example, one list may be configured in the upper layer parameter PDSCH-Config. One list may include up to 128 upper layer parameters TCI-State. One list may be a list of up to 128 upper layer parameters TCI-State. One list may be configured to provide one reference signal. The upper layer parameter TCI-State may be configured to provide one reference signal. One reference signal may be a reference signal for DMRS of PDSCH and QCL for DMRS of PDCCH. One reference signal may be a reference signal for CSI-RS. One list may be configured to provide one reference. The upper layer parameter TCI-state may be configured to provide one reference. One reference may be used to determine an uplink transmit spatial filter (UL TX spatial filter). The uplink transmit spatial filter may be used for the PUSCH, PUCCH, and SRS. That is, one reference may be provided for determining uplink transmit spatial filters 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 may be the setting of the unified TCI state. Setting the higher layer parameter dlOrJointTCI-StateList may be the setting of the unified TCI state.

[0247] The TCI-State (e.g., upper layer parameter TCI-State) and the TCI-UL-State (e.g., upper layer parameter TCI-UL-State) may be set in one BWP of one component carrier. If the TCI-State setting or the TCI-UL-State setting is not set in one BWP, the terminal device 1 may apply the TCI-State setting or the TCI-UL-State setting from the reference BWP. The TCI-UL-State may be referred to as the UL TCI state or the unified TCI state. Setting the ul-TCI-StateList may mean setting the unified TCI state.

[0248] The terminal device 1 may not expect both the first upper layer parameter and the second upper layer parameter to be configured. The first upper layer parameter may be any one of tci-StatesToAddModList, SpatialRelationInfo, and PUCCH-SpatialRelationInfo. The second upper layer parameter may be any one of dl-OrJointTCI-StateList and TCI-UL-StateList. When tci-StatesToAddModList is configured for any component carrier in a certain list, the second upper layer parameter may not be configured for any component carrier in the same band in the certain list. The certain list may be configured by the upper layer parameter simultaneousTCI-UpdateList1, the upper layer parameter simultaneousTCI-UpdateList2, the upper layer parameter simultaneousSpatial-UpdatedList1, or the upper layer parameter simultaneousSpatial-UpdatedList2.

[0249] The terminal device 1 may receive an activation command. The activation command may be used to map up to eight "TCI states and / or TCI state pairs" to code points of the DCI field 'Transmission Configuration Indication'. A pair of TCI states may involve one TCI state for a downlink channel / signal and / or one TCI state for an uplink channel / signal. The activation command may be used to map up to eight sets of TCI states to code points of the DCI field 'Transmission Configuration Indication'. Each set may include up to two TCI states for uplink and downlink channels / signals. The activation command may be used to map up to two TCI states for a downlink channel / signal and up to two TCI states for an uplink channel / signal to code points of the DCI field 'Transmission Configuration Indication'. A TCI state for a downlink channel / signal may be referred to as a DL TCI state. A TCI state for an uplink channel / signal may be referred to as a UL TCI state. The downlink channel / signal may be some or all of a PDSCH, a PDCCH, and a CSI-RS. The uplink channel / signal may be some or all of a PUSCH, a PUCCH, and a SRS. A DCI (DCI format) may be configured with one or more DCI fields. For example, a DCI (DCI format) may be configured to include a TCI field ('Transmission Configuration Indication' field).

[0250] If a first set of one or more TCI state IDs are activated in the second set, the first set may be applied for downlink BWPs on the indicated component carrier. If a first set of one or more TCI state IDs are activated in the third set, the first set may be applied for downlink BWPs and uplink BWPs on the indicated component carrier. The second set may be a set of one or more component carriers and / or one or more downlink BWPs. The third set may be a set of one or more component carriers, one or more downlink BWPs, and / or one or more uplink BWPs.

[0251] If the activation command maps one or both of the DL / Joint TCI state and the UL TCI state to one TCI code point (the code point of the DCI field 'Transmission Configuration Indication'), the terminal device 1 may apply one or both of the indicated DL / Joint TCI state and the indicated UL TCI state.

[0252] The terminal device 1 may receive a DCI format that provides the indicated DL / Joint TCI state or the indicated UL TCI state. The DCI format does not need to include a downlink assignment. For example, if the DCI format does not include a downlink assignment, the terminal device 1 may assume some or all of the following: CS-RNTI is used to scramble the CRC for the DCI, RV (Redundancy version) is all ones, MCS is all ones, NDI is 0, all zeros are set for FDRA type 0, and all ones are set for FDRA type 1.

[0253] The terminal device 1 may receive an upper layer configuration. After the terminal device 1 receives the first upper 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 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. Setting the upper layer parameter DLorJoint-TCIStateList may mean setting the "TCI state to be set". Setting the upper layer parameter DLorJoint-TCIStateList may mean setting a unified TCI state. Setting the "TCI state to be set" may mean setting a unified TCI state. DLorJoint-TCIStateList may be accompanied by multiple upper layer parameters TCI-State.

[0254] After the terminal device 1 receives the first higher layer configuration of the "TCI state to be configured" and before one "indicated TCI state" is applied from the "TCI state to be configured," the terminal device 1 may assume that the first uplink transmission spatial filter for the PUSCH, PUCCH, and SRS to which the "indicated TCI state" is applied is the same as the second uplink transmission spatial filter. The second uplink transmission spatial filter may be an uplink transmission spatial filter for PUSCH transmission scheduled by a random access response grant in an initial access procedure. Configuring the higher layer parameter ul-TCI-StateList may mean configuring the "TCI state to be configured." Configuring the higher layer parameter ul-TCI-StateList may mean configuring a unified TCI state. Configuring the "TCI state to be configured" may mean configuring a unified TCI state. The ul-TCI-StateList may be accompanied by multiple higher layer parameters TCI-State.

[0255] The terminal device 1 may receive higher layer configuration. After the terminal device 1 receives the first higher layer configuration of the "set TCI state" as part of the synchronized reconfiguration and before one "indicated TCI state" is applied from the "set TCI state," the DMRS of the PDSCH, the DMRS of the PDCCH, and the CSI-RS to which the indicated TCI state is applied may be an SS / PBCH block or a CSI-RS resource and a QCL. For example, the SS / PBCH block or the CSI-RS resource may be identified in a random access procedure initiated by the synchronized reconfiguration.

[0256] The terminal device 1 may receive an upper layer configuration. After the terminal device 1 receives the first upper layer configuration of the "set TCI state" as part of the synchronized reconfiguration and before one "indicated TCI state" is applied from the "set TCI state," it may be assumed that the first uplink transmit spatial filter for the PUSCH, PUCCH, and SRS applying the indicated TCI state is the same as the second uplink transmit spatial filter. The second uplink transmit spatial filter may be the uplink 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 the uplink transmit spatial filter for PUSCH transmission scheduled by a random access response grant in the random access procedure initiated by the synchronized reconfiguration.

[0257] 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.

[0258] 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.

[0259] When the unified TCI state is configured, when the terminal device 1 transmits the first channel, and when the first "indicated TCI state" is different from the second "indicated TCI state," the first "indicated TCI state" may be applied from the first slot. The first channel may be a PUCCH with HARQ-ACK information or a PUSCH with HARQ-ACK information. The HARQ-ACK information may be HARQ-ACK information corresponding to a DCI carrying a TCI state indication without downlink assignment. The HARQ-ACK information may be HARQ-ACK information corresponding to a PDSCH scheduled by a DCI carrying a TCI state indication. The second indicated TCI 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 a higher layer parameter. BeamAppTime may be determined by the terminal capability. The indicated TCI state may be an indicated TCI-State or an indicated TCI-UL-State.

[0260] When the multi-DCI mode is configured, the terminal device 1 may receive an activation command ("activated TCI state") for a CORESET associated with each CORESET pool index. The activation command may be used to map up to eight TCI states to a code point of the DCI field 'Transmission Configuration Indication'. A TCI state mapped to a code point of the TCI field may be referred to as an activated TCI state. A TCI state indicated by the activation command may be referred to as an activated TCI state. When a set of TCI state IDs is activated for one CORESET pool index, the "activated TCI state" corresponding to the one CORESET pool index may be associated with one physical cell ID, and the "activated TCI state" corresponding to a CORESET pool index different from the one CORESET pool index 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 may correspond to a CORESET pool index of '0' or '1'. The configuration of the multi-DCI mode may mean that the higher layer parameter PDCCH-Config includes two different values ​​of the CORESET pool index (CORESET Pool Index or coresetPoolIndex).

[0261] One code point of the DCI field 'Transmission Configuration Indication' (i.e., the TCI field) may contain up to two TCI states. The terminal device 1 may receive an activation command. The activation command may be used to map up to eight combinations of two or less TCI states to a code point of the DCI field 'Transmission Configuration Indication'. The terminal device 1 may not expect to receive more than eight TCI states in the activation command.

[0262] When the terminal device 1 transmits a first PUCCH in a first slot, the mapping between the TCI state and the code point may be applied from a second slot. The first PUCCH may be accompanied by first HARQ-ACK information. The first PUCCH may be transmitted corresponding to a first PDSCH. The first PDSCH may carry an activation command.

[0263] 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 indicate that the higher layer parameter tci-PresentInDCI is set to 'enabled'. The presence of the TCI field may indicate 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 capability.

[0264] 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 first higher layer parameter may be tci-PresentInDCI set to 'enabled'. The first higher layer parameter may be tci-PresentInDCI set to 'enabled' for the CORESET that schedules the PDSCH or multicast PDSCH. The first higher layer parameter may be tci-PresentDCI-1-2.

[0265] If the TCI field is not present and the time offset is greater than or equal to a threshold, the TCI state or QCL assumption for the PDSCH may be the same as the TCI state or QCL assumption applied for the CORESET used for the PDCCH to determine the PDSCH antenna port QCL. The time offset may be the time offset between reception of the DL DCI and the corresponding PDSCH. The threshold may be timeDurationForQCL.

[0266] If SFN is configured for the PDCCH, if SFN is configured for the PDSCH, if the PDSCH is scheduled according to a DCI format, if the time offset is equal to or greater than a threshold, and if the default beam is supported, the QCL assumption or TCI state for the PDSCH may be the same as the QCL assumption or TCI state applied for CORESET. Also, if dynamic switching is not supported, CORESET may be activated in two TCI states. CORESET may be the CORESET for receiving DL DCI. If SFN is configured for the PDCCH, if SFN is configured for the PDSCH, if the PDSCH is scheduled according to a DCI format, if the time offset is equal to or greater than a threshold, and if the default beam is not supported, the presence of a TCI field may be assumed. Configuring SFN for the PDCCH may mean configuring the higher layer parameter sfnSchemePdcch. Configuring SFN for the PDSCH may mean configuring the higher 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 may be timeDurationForQCL.

[0267] 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 the time offset is greater than or equal to a threshold, the presence of the TCI field may be expected.

[0268] If the PDSCH is scheduled by DCI format 1_0 / 1_1 / 1_2, and SFN scheme A is configured for the PDCCH, and SFN is not configured for the PDSCH, and there is no TCI codepoint (a codepoint in the TCI field) with two TCI states, and the time offset is equal to or greater than a threshold, and 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. Configuring SFN scheme A for the PDCCH may also mean configuring sfnSchemePdcch with 'sfnSchemeA' set.

[0269] If the unified TCI state is not configured, and the time offset is smaller than the threshold, and at least one configured TCI state includes a qcl-Type set to typeD, the DMRS port of the PDSCH may be an RS and QCL for a certain QCL parameter. The certain QCL parameter may be used for the PDCCH QCL indication of a certain CORESET. The certain CORESET may be a CORESET associated with a search space with the lowest CORESET ID (controlResourceSetId) among the CORESETs monitored by the terminal device 1 in the latest slot.

[0270] If the unified TCI state is configured, and the time offset is less 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 the PCI (Physical Cell ID) of the serving cell, the indicated TCI state may be applied to PDSCH reception. If the unified TCI state is configured, and the time offset is less 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 the PCI (Physical Cell ID) of the serving cell, the DMRS port of the PDSCH in the serving cell may use the reference signal and QCL associated with the QCL parameter of the CORESET associated with the lowest CORESET ID. Configuring the unified TCI state may also mean configuring the higher layer parameter dl-OrJointTCI-StateList.

[0271] 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 UL transmission is indicated, 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, if 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, which is set to '1'.

[0272] For periodic CSI-RS resources, the TCI state may indicate QCL for SS / PBCH blocks and Type C. The SS / PBCH blocks may have a PCI different from the PCI of the serving cell. The periodic CSI-RS resources may be CSI-RS resources in the NZP CSI-RS resource set for Tracking Reference Signal (TRS). The NZP may be non-zero power. The CSI-RS resource set for TRS may be the CSI-RS resource set for which the higher layer parameter trs-Info is configured.

[0273] If a unified TCI state is configured for periodic CSI-RS and semi-persistent CSI-RS resources, the terminal device 1 may assume that the indicated TCI state does not apply.

[0274] For aperiodic CSI-RS resources, the TCI state may indicate QCL for periodic CSI-RS resources and Type A. The aperiodic CSI-RS resources may be CSI-RS resources in the NZP CSI-RS resource set for TRS. The periodic CSI-RS resources may be CSI-RS resources in the NZP CSI-RS resource set for TRS.

[0275] 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. 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 the NZP CSI-RS resource set for TRS when Type D is not applicable. The CSI-RS resource set for repetition may be a CSI-RS resource set with the higher layer parameter repetition.

[0276] 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 QCL for the SS / PBCH block and Type C. The fourth CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set for repetition.

[0277] If the unified TCI state is not configured, for DMRS of PDCCH, the TCI state may indicate QCL for the CSI-RS resource and Type A. The CSI-RS resource may be a CSI-RS resource in the NZP CSI-RS resource set.

[0278] When SFN scheme A is configured for the PDCCH and CORESET is activated in two TCI states, the DMRS ports of the PDCCH in CORESET may be DL RS (downlink reference signal) and QCL for the two TCI states. When SFN scheme B is configured for the PDCCH and CORESET is activated in two TCI states, the DMRS ports of the PDCCH in CORESET may be DL RS and QCL for the two TCI states, and the second TCI state may not include the QCL parameters {Doppler shift, Doppler spread}. Configuring SFN scheme A for the PDCCH may mean configuring sfnSchemePdcch with 'sfnSchemeA' set. Configuring SFN scheme B for the PDCCH may mean configuring sfnSchemePdcch with 'sfnSchemeB' set.

[0279] 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}.

[0280] If the unified TCI state is not configured, for DMRS of PDSCH, the TCI state may indicate QCL for 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.

[0281] When a unified TCI state is configured, for DMRS of PDCCH, the TCI state may indicate QCL for CSI-RS resources and Type A. When a unified TCI state is configured, for DMRS of PDSCH, the TCI state may indicate QCL for CSI-RS resources and Type A.

[0282] If SFN scheme A is configured for the PDSCH and two TCI states are indicated, the DMRS port of the PDSCH may be the two TCI states DL-RS and QCL. If SFN scheme B is configured for the PDSCH and two TCI states are indicated, the DMRS port of the PDSCH may be the two TCI states DL-RS and QCL. If SFN scheme B is configured for the PDSCH and two TCI states are indicated, the DMRS port of the PDSCH may be the two TCI states DL-RS and QCL, 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 of the DCI field 'Transmission Configuration Indication' in the DCI scheduling the PDSCH. Configuring SFN scheme A for the PDSCH may also mean configuring sfnSchemePdsch with 'sfnSchemeA' set. Setting SFN scheme B for PDSCH may be setting sfnSchemePdsch to which 'sfnSchemeB' is set.

[0283] When the unified TCI state is configured, and when the multi-DCI mode is configured, and when one indicated TCI state is indicated by a TCI field in DCI format 1_1 / 1_2 associated with one CORESET pool index value (DCI field 'Transmission Configuration Indication'), one indicated TCI state may correspond to one CORESET pool index value. Configuring the unified TCI state may mean that dl-OrJointTCI-StateList or TCI-UL-State is configured. Configuring the multi-DCI mode may mean that the higher layer parameter PDCCH-Config, which includes two different CORESET pool index values, is configured. The CORESET pool index may be configured in the higher layer parameter ControlResourceSet.

[0284] When the unified TCI state is configured, and the terminal device 1 has two indicated TCI-States, and the terminal capability of the default beam is not reported, and if the time offset is smaller than a threshold, the first indicated TCI-State may be applied to PDSCH reception. The terminal capability of the default beam may be a capability to use the two indicated TCI states to buffer a received signal before the threshold. The terminal capability of the default beam may be a capability in FR2 (Frequency Range 2). For example, FR2 may be a frequency range from 24250 MHz to 52600 MHz. The time offset may be an offset between the reception of the scheduled DCI format 1_0 / 1_1 / 1_2 and the scheduled PDSCH reception. The time offset may be an offset between the reception of the activated DCI format 1_0 / 1_1 / 1_2 and the activated PDSCH reception. The threshold may be timeDurationForQCL or a value smaller than timeDurationForQCL.

[0285] If the unified TCI state is configured, if the multi-DCI mode is configured, 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, 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 may be the offset between reception of the DCI format in the CORESET associated with CORESET pool index 0 and PDSCH reception. The second time offset may be the offset between reception of the DCI format in the CORESET associated with CORESET pool index 1 and PDSCH reception.

[0286] When a unified TCI state is configured, and when the terminal device 1 has two indicated TCI-States, and when a certain condition is met, the higher layer parameter applyIndicatedTCIState may indicate 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 higher layer parameter applyIndicatedTCIState may indicate "first", "second", or "both", where "first" may correspond to the first indicated TCI state, "second" may correspond to the second indicated TCI state, and "both" may correspond to the two indicated TCI states. When CJT is configured for the PDSCH or SFN is configured for the PDSCH, the higher layer parameter applyIndicatedTCIState may indicate "both". The certain condition may be FR1 (Frequency Range 1). One condition may be that the terminal capability of the default beam is reported in FR2.

[0287] If a unified TCI state is set, and if the terminal device 1 has two indicated TCI-States, and if certain conditions are met, and if the upper layer parameter applyIndicatedTCIState is not set, the first indicated TCI-State may be applied to the PDSCH scheduled by DCI format 1_0.

[0288] When a unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and when a certain condition is met, and the TCI indication field indicates "00", a first indicated DL / Joint TCI state may be applied to the PDSCH. When a unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and when a certain condition is met, and the TCI indication field indicates "01", a second indicated DL / Joint TCI state may be applied to the PDSCH. When a unified TCI state is set, and the terminal device 1 has two indicated TCI-States, and when a certain condition is met, and the TCI indication field indicates "10", two indicated DL / Joint TCI states may be applied to the PDSCH. If the unified TCI state is set, and if the terminal device 1 has two indicated TCI-States, and if certain conditions are 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. Whether the TCI indication field is present in DCI format 1_1 / 1_2 may be determined by the higher layer parameter tciSelection-PresentInDCI.

[0289] The terminal device 1 may be configured with an upper layer parameter TCI-UL-State. For example, the terminal device 1 may configure one list in the upper layer parameter BWP-UplinkDedicated. One list may include up to 64 upper layer parameters TCI-UL-State. One list may be a list of up to 64 upper layer parameters TCI-UL-State. Each TCI-UL-State (or UL-TCI-State configuration) may include a parameter for configuring one reference signal. For example, each TCI-UL-State may include a parameter for configuring one reference signal for determining uplink transmit spatial filters for some or all of the PUSCH, PUCCH, and SRS. One list may be the upper layer parameter ul-TCI-StateList. The TCI state may be the TCI-UL-State. The UL-TCIState (TCI-UL-State) may be referred to as the ULTCI state or the unified TCI state.

[0290] 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.

[0291] The CSI report may be triggered by the DCI (DCI format). For example, aperiodic CSI report may be triggered by DCI format 0_1 / 0_2.

[0292] The time-frequency resources used to report the CSI may be controlled by the base station device 3. The CSI may be composed of some or all of a CQI (Channel Quality Indicator), a PMI (Precoding Matrix Indicator), a CRI (CSI-RS resource indicator), an SSBRI (SS / PBCH Block Resource Indicator), an LI (Layer Indicator), an RI (Rank Indicator), an L1-RSRP (Layer 1-Reference Signal Received Power), an L1-SINR (Layer 1-Signal-to-Interference-plus-Noise Ratio), a Capability Index, and TDCP (Time-Domain Channel Properties). The CQI, PMI, CRI, SSBRI, LI, RI, L1-RSRP, L1-SINR, Capability Index, and TDCP may be referred to as CSI parameters.

[0293] N CSI reporting configurations may be configured in the terminal device 1. The CSI reporting configuration may be a higher layer parameter CSI-ReportConfig.

[0294] M CSI resource configurations may be configured in terminal device 1. The CSI resource configurations may be higher layer parameters CSI-ResourceConfig.

[0295] The terminal device 1 may be configured with one or two lists of trigger states (Trigger state(s)). The list of trigger states may be one or both of the higher layer parameter CSI-AperiodicTriggerStateList and the higher layer parameter 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-SemiPersistentOnPUSCH-TriggerStateList. The list of trigger states may include one or more trigger states.

[0296] 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.

[0297] Each CSI reporting configuration (Reporting Setting CSI-ReportConfig) may be associated with one downlink BWP. 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, one downlink BWP may be given in the CSI resource configuration for channel measurement.

[0298] 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).

[0299] 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.

[0300] The time domain operation may be indicated by the higher layer parameter reportConfigType. The time domain operation may be set to 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', or 'periodic'. 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.

[0301] A periodicity and a slot offset may be configured for CSI reporting for periodic CSI and semi-persistent CSI. For CSI reporting for periodic CSI and semi-persistent CSI, a periodicity and a slot offset may be applied in the numerology of the uplink BWP corresponding to the transmission of the CSI report.

[0302] Each CSI reporting configuration may include a report quantity configuration, which may indicate a CSI-related quantity, an L1-RSRP-related quantity, an L1-SINR-related quantity, a CapabilityIndex-related quantity, or a TDCP-related quantity.

[0303] The frequency granularity may be indicated by a higher layer parameter, reportFreqConfiguration. The PMI and CQI reports may correspond to wideband or sub-band. For example, the frequency granularity of each of the PMI and CQI may be wideband or sub-band.

[0304] 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.

[0305] 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 codebook configuration may include codebook subset restriction. The codebook configuration may include group-based reporting configuration.

[0306] Each CSI resource configuration (CSI-ResourceConfig) may include a list of S CSI resource sets (CSI-RS resource sets). A list may be provided by the higher layer parameter csi-RS-ResourceSetList. A list may include references to one or both of NZP CSI-RS resource sets and SS / PBCH block sets. A list may include references to CSI-IM (CSI-Interference Measurement) resource sets. Each CSI resource configuration may be associated with one downlink BWP. A downlink BWP may be indicated by a BWPID. All CSI resource configurations linked with one CSI reporting configuration may have the same downlink BWP. One or more CSI resource configurations may be linked with one CSI reporting configuration. For example, one or more CSI resource configurations with the same downlink BWP may be linked with one CSI reporting configuration.

[0307] 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 include one or more CSI-RS resources. Each NZP CSI-RS resource set may include one or more NZP CSI-RS resources.

[0308] The time domain behavior of 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. In a CSI resource configuration for periodic CSI and semi-persistent CSI, the CSI resource configuration may include one CSI-RS resource set. In a CSI resource configuration for periodic CSI and semi-persistent CSI, the CSI resource configuration may include two or fewer CSI-RS resource sets if group-based reporting is configured.

[0309] In the CSI resource configuration for periodic CSI and semi-persistent CSI, a period and a time offset (slot offset) may be configured. In the CSI resource configuration for periodic CSI and semi-persistent CSI, the period and the time offset may be provided in the numerology of the downlink BWP given by the BWP ID.

[0310] 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 the multiple CSI resource configurations. All CSI resource configurations linked with one CSI reporting configuration may have the same time domain behavior.

[0311] 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.

[0312] The NZP CSI-RS resources for channel measurement and the CSI-IM resources for interference measurement (or the NZP CSI-RS resources) may be QCL for Type D. The NZP CSI-RS resources for channel measurement and the CSI-IM resources for interference measurement (or the NZP CSI-RS resources) may be configured for one CSI report (CSI report configuration).

[0313] For TDCP measurement, one periodic CSI reporting configuration (CSI reporting configuration for periodic CSI) may be configured. The CSI reporting configuration may be a configuration for channel measurement in the CSI-RS for tracking. TDCP measurement may be a measurement when the report quantity setting (reportQuantity) in the CSI reporting configuration includes TDCP.

[0314] When one CSI resource configuration is configured for L1-SINR measurement, the one CSI resource configuration may be a configuration for channel measurement and interference measurement. The channel measurement and interference measurement may be measurements in the NZP CSI-RS for L1-SINR calculation. The one CSI resource configuration may be given by resourcesForChannelMeasurement. The L1-SINR measurement may be a measurement when the report quantity setting (reportQuantity) in the CSI report configuration includes L1-SINR.

[0315] For 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 measurement may be a measurement on SSB or NZP CSI-RS. The interference measurement may be a measurement on CSI-IM or 1-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.

[0316] The terminal device 1 may calculate CSI parameters. The CSI parameters may be some or all of the LI, CQI, PMI, RI, and CRI. The terminal device 1 may calculate the RI based on the CRI. The terminal device 1 may calculate the PMI based on the RI and 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.

[0317] The CSI reporting configuration may be aperiodic, periodic, or semi-persistent. The CSI-RS resources may be periodic, semi-persistent, or aperiodic. A CSI report may be triggered for each CSI resource configuration. The combination of the CSI reporting configuration and the CSI resource configuration may be determined by time-domain operations. The periodic CSI-RS may be configured by higher layers. The semi-persistent CSI-RS may be activated and deactivated. The aperiodic CSI-RS may be configured, activated, and triggered.

[0318] Periodic CSI-RS may be combined with any of periodic, semi-persistent, and aperiodic CSI reporting configurations. Semi-persistent CSI-RS may be combined with any of semi-persistent and aperiodic CSI reporting configurations. Aperiodic CSI-RS may be combined with any of 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 reporting may be triggered by the MAC CE (e.g., subselection indication).

[0319] The terminal device 1 may determine one CRI. The 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. If the codebook setting (codebookType) is set to any of Type 2 (type II, type II-PortSelection), Extended Type 2-CSI (type II-r16), Extended Type 2-Port Selection (type II-r16), Super Extended Type 2-CSI (type II-r17), Super Extended Type 2-Port Selection (type II-PortSelection-r17), Super Extended Type 2-CJT (type II-CJT-r18), Super Extended Type 2-Port Selection CJT (type II-CJT-PortSelection-r18), Extended Type 2-Predicted PMI (type II-Doppler-r18), and Super Extended Type 2-Port Selection-Predicted PMI (type II-Doppler-PortSelection-r18), CSI need not be reported.

[0320] For periodic or semi-persistent CSI reporting in PUCCH, the period T CSI and slot offset Toffset may be set by a higher layer parameter (e.g., reportSlotConfig). The terminal device 1 may transmit a CSI report. The terminal device 1 may transmit a CSI report in one slot in one radio frame. One radio frame has a 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 μ s，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.

[0321] In the semi-persistent CSI reporting in PUSCH, the period T CSI may be set by a higher layer parameter (e.g., reportSlotConfig). The terminal device 1 may transmit a CSI report in one slot in one radio frame. One radio frame and one slot are 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 may correspond to the first semi-persistent PUSCH transmission. The first semi-persistent PUSCH transmission may follow an activation DCI.

[0322] For semi-persistent or aperiodic CSI reporting on the PUSCH, one or more slot offsets may be configured by a higher layer parameter. If CSI reporting is triggered / activated by DCI format 0_2, the higher layer parameter may be reportSlotOffsetListDCI-0-2. If CSI reporting 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.

[0323] In the CSI report, one of two sub-band sizes may be configured. The sub-bands are N SB PRB If the number of PRBs in one BWP is between 24 and 72, then 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.

[0324] A higher layer parameter (e.g., reportFreqConfiguration) may indicate the frequency granularity of the CSI report. One CSI reporting configuration may define the band of the CSI report as a subset of subbands of a BWP. A higher layer parameter may indicate the subset of subbands in one BWP. The subbands may be contiguous or non-contiguous. One BWP may be the BWP in which CSI is reported. It may not be expected that a subband be configured with a lower frequency density than that of one CSI-RS resource. One CSI-RS resource may have a frequency density in one subband. One CSI-RS may be linked to one CSI reporting configuration. The frequency density may be the density of each CSI-RS port (CSI port, antenna port) per PRB.

[0325] 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).

[0326] The frequency granularity may be wideband CQI or subband CQI reporting. When wideband CQI reporting is configured, a wideband CQI may be reported for the entire CSI reporting band. When subband CQI reporting is configured, one CQI may be reported for each subband in the CSI reporting band.

[0327] The frequency granularity may be wideband PMI or subband PMI reporting. When wideband PMI reporting is configured, one wideband PMI may be reported for the entire CSI reporting band. When subband PMI reporting is configured, one single wideband indication (i1) may be reported for the entire CSI reporting band, and one subband indication (i2) may be reported for each subband in the CSI reporting band.

[0328] If a certain condition is met, the frequency granularity may be full band. One condition may be that full band PMI reporting is set, full band CQI reporting is set, and the report quantity setting (reportQuantity) is set to CRI, RI, PMI, and CQI ('cri-RI-PMI-CQI'). One condition may be that full band PMI reporting is set, full band CQI reporting is set, and the report quantity setting (reportQuantity) is set to CRI, LI, PMI, and CQI ('cri-LI-PMI-CQI'). One condition may be that the report quantity setting (reportQuantity) is set to CRI, RI, and i1 ('cri-RI-i1'). If a certain condition is not met, the frequency granularity may be sub-band.

[0329] 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.

[0330] 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.

[0331] The terminal device 1 may report CSI. If semi-persistent CSI reporting is configured and both the CSI-IM and NZP CSI-RS resources are configured as periodic or semi-persistent, the terminal device 1 may report CSI. If aperiodic CSI reporting is configured and both the CSI-IM and NZP CSI-RS resources are configured as periodic, semi-persistent, or aperiodic, the terminal device 1 may report CSI.

[0332] 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.

[0333] For aperiodic CSI, each trigger state may be associated with one or more CSI reporting configurations. Each trigger state may be configured 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. Group-based reporting may not be configured for each CSI reporting configuration.

[0334] When one CSI resource configuration is configured, the one CSI resource configuration may correspond to channel measurement for L1-RSRP or channel / interference measurement for L1-SINR calculation. The one CSI resource configuration may be given by resourcesForChannelMeasurement.

[0335] 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 or 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.

[0336] Three CSI resource configurations may be configured. The first CSI resource configuration may be for channel measurement. The second CSI resource configuration may be for interference measurement via CSI-IM. The third CSI resource configuration may be for interference measurement via 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. The third CSI resource configuration may be given by nzp-CSI-RS-ResourcesForInterference. resourcesForChannelMeasurement, csi-IM-ResourcesForInterference, and nzp-CSI-RS-ResourcesForInterference may be configured in one CSI report configuration.

[0337] For aperiodic CSI (CSI reporting) and for periodic and non-persistent CSI resource configurations, each trigger state may be associated with one or more CSI reporting configurations. Each CSI reporting configuration may be linked to a periodic or non-persistent CSI resource configuration. For each CSI reporting configuration, group-based reporting may be configured. When one CSI resource configuration is configured, the one CSI resource configuration may be for L1-RSRP measurements. In this case, the number of CSI-RS resource sets in the CSI resource configuration may be two.

[0338] For aperiodic CSI (CSI reporting) and for aperiodic CSI resource configurations, each trigger state may be associated with one or more CSI reporting configurations. For each CSI reporting configuration, group-based reporting may be configured. 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.

[0339] For semi-persistent or periodic CSI (CSI reporting), each CSI report configuration may be linked to a periodic or semi-persistent CSI resource configuration. When one CSI resource configuration is configured, it may be for channel measurement for L1-RSRP or 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. For L1-SINR calculation, the second CSI resource configuration may be for interference measurement performed in CSI-IM or NZP CSI-RS.

[0340] 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.

[0341] In one CSI resource configuration, more than 64 NZP CSI-RS resources and / or SS / PBCH block resources may not be expected. One CSI resource configuration may be used for channel measurement. In a CSI report configuration corresponding to a CSI resource configuration for channel measurement, the reporting amount setting 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.

[0342] For measurements other than L1-SINR measurements (e.g., CSI measurements), each NZP CSI-RS port configured for interference measurement may correspond to an interference transmission layer. For measurements other than L1-SINR measurements (e.g., CSI measurements), all interference transmission layers on the NZP CSI-RS ports may take EPRE into account. For L1-SINR measurements, dedicated interference measurement resources may be configured. The total received power on the dedicated resources may correspond to the interference-to-noise ratio.

[0343] 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.

[0344] If the reporting amount setting is set to none, the terminal device 1 does not need to report CSI.

[0345] 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.

[0346] When cri-RI-i1 is set in the reporting amount setting, the terminal device 1 may report a second PMI. The second PMI may be configured with a single all-band indication i1. Type 1 may be set in the codebook setting in the CSI reporting setting. The frequency granularity for the PMI in the CSI reporting setting may be all-band.

[0347] When the reporting amount setting is set to cri-RI-i1-CQI, the terminal device 1 may report a third PMI. The third PMI may be configured as a single full-band indication. The CQI may be calculated based on the third PMI. The terminal device 1 may report the CQI.

[0348] If the reporting amount setting is set to cri-RI-CQI, the terminal device 1 may report RI. The terminal device 1 may calculate CQI for one rank.

[0349] If cri-RSRP, ssb-Index-RSRP, cri-RSRP-Index, or ssb-Index-RSRP-Index is set in the reporting amount configuration and group-based reporting is not configured, 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).

[0350] If the reporting amount setting is set to cri-RSRP, ssb-Index-RSRP, cri-RSRP-Index, or ssb-Index-RSRP-Index, and if group-based reporting is configured, the terminal device 1 may report two different CRIs or SSBRIs for each CSI reporting setting. 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 CSI-RS / SSB resources simultaneously.

[0351] If cri-SINR, ssb-Index-SINR, cri-SINR-Index, or ssb-Index-SINR-Index is set in the reporting quantity setting and group-based reporting is not set, the terminal device 1 may report N different CRIs or SSBRIs for each CSI reporting setting.

[0352] When cri-SINR, ssb-Index-SINR, cri-SINR-Index, or ssb-Index-SINR-Index is set in the reporting quantity setting, and when group-based reporting is configured, the terminal device 1 may report two different CRIs or SSBRIs for each CSI reporting setting.

[0353] If tdcp is set in the reporting quantity setting, the terminal device 1 may report the amplitude and phase of the TDCP measurement.

[0354] When 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 when K CSI-RS resources are configured in the CSI-RS resource set for channel measurement, the terminal device 1 may calculate CSI parameters other than the CRI based on the CRI. One CRI may correspond to one CSI-RS. For example, the (k+1)th entry of the NZP CSI-RS resource in the NZP CSI-RS resource set for channel measurement may correspond to the CRI value k. The (k+1)th entry of the CSI-IM resource in the CSI-IM resource set for interference measurement may correspond to the 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 the CRI value k. K may be greater than 1. If K is 2, each CSI-RS resource may have a maximum of 16 CSI-RS ports (CSI ports, antenna ports). If K is greater than or equal to 3 and less than or equal to 8, each CSI-RS resource may have a maximum of 8 CSI-RS ports. If cri-RI-PMI-CQI is set as the reporting amount setting, Type 2 does not need to be set as the codebook setting.

[0355] 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.

[0356] 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 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 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 SSBRI.

[0357] If the reporting quantity configuration is set to cri-RSRP, cri-SINR, none, cri-RSRP-Index, or cri-SINR-Index, and if one CSI reporting configuration links one aperiodic CSI resource configuration, it may not be expected that more than 16 CSI-RS resources will be configured in one CSI-RS resource set in one CSI resource configuration.

[0358] 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.

[0359] For L1-RSRP calculation, if one CRI or SSBRI is reported for each CSI reporting configuration (e.g., nrofReportedRS is 1), the reported L1-RSRP value may be defined by 7 bits. The L1-RSRP value range may be from -140 dBm to -44 dBm. The L1-RSRP value may be given in 1 dB intervals.

[0360] In the L1-RSRP calculation, if multiple CRIs or SSBRIs are reported for each CSI reporting configuration (e.g., if nrofReportedRS is 2 or greater), the first value of the reported L1-RSRP may be defined by 7 bits, and the second value of the reported L1-RSRP may be defined by 4 bits. The range of the first value may be from −140 dBm to −44 dBm. The first value may be given in 1 dB intervals. The second value may be calculated as the difference between the first values. The second value may be given in 2 dB intervals.

[0361] When group-based reporting is configured, the terminal device 1 may indicate one CSI-RS resource set. One CSI-RS resource set may be associated with the maximum L1-RSRP value. The CRI or SSBRI of one CSI-RS resource set may be located at the beginning.

[0362] The terminal device 1 may calculate the L1-RSRP based on the NZP CSI-RS or the SS / PBCH block. For example, if a time limit is not set, the terminal device 1 may perform channel measurement based on the SS / PBCH block or the NZP CSI-RS for the L1-RSRP calculation. For example, if a time limit is set, the terminal device 1 may perform channel measurement based on the latest opportunity of the SS / PBCH block or the NZP CSI-RS for the L1-RSRP calculation.

[0363] 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.

[0364] 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.

[0365] For L1-SINR calculation, if one CRI or SSBRI is reported for each CSI reporting configuration (e.g., nrofReportedRS is 1), the reported L1-SINR value may be defined by 7 bits. The L1-SINR value may range from -23 to 40 dB. The L1-SINR value may be given in 0.5 dB intervals.

[0366] In the L1-SINR calculation, if multiple CRIs or SSBRIs are reported for each CSI reporting configuration (e.g., if nrofReportedRS is 2 or more), the first value of the reported L1-SINR may be defined with 7 bits, and the second value of the reported L1-SINR may be defined with 4 bits. The range of the first value may be from −23 dB to 40 dB. The first value may be given in 0.5 dB intervals. The second value may be calculated as the difference of the first values. The second value may be given in 1 dB intervals.

[0367] An aperiodic CSI report may correspond to an aperiodic CSI-RS. In a CSI-RS resource set associated with an aperiodic, periodic, or semi-persistent CSI resource setting, the trigger state for the aperiodic CSI reporting setting may be configured by a higher layer parameter (e.g., CSI-AperiodicTriggerStateList). The trigger state may be configured for one or both of the CSI resource settings for channel measurement and interference measurement.

[0368] 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.

[0369] The terminal device 1 may receive a DCI with a CSI request field. Two or more DCIs with a CSI request field having a non-zero value may not be expected to be received in one slot in one cell.

[0370] In multiple aperiodic CSI-RS resource sets with the same trigger offset in the same trigger state, different TCI states may not be expected to be configured for the same aperiodic CSI-RS resource ID.

[0371] In one slot in one cell, no more than one request for aperiodic CSI reporting may be expected to be received.

[0372] The trigger state may be initiated by a CSI request field in the DCI. If all information bits in the CSI request field are set to zero, no CSI may be requested.

[0373] The number of trigger conditions is 2^N TS If the value is greater than or equal to -1, the terminal device 1 may receive a subselection indication. The subselection indication is a code point in the CSI request field with a maximum of 2^N TS It may be used to map the trigger state of -1. TS may be the number of bits in the CSI request field.

[0374] 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.

[0375] The CSI request field may indicate one trigger condition, e.g., 2^N trigger conditions. TS If less than −1, the CSI request field may indicate one trigger condition.

[0376] A first QCL setting and a first QCL type may be indicated for each aperiodic CSI-RS resource in one CSI-RS resource set associated with each triggering state.

[0377] 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 may be associated with one trigger state. In one trigger state in one CSI resource configuration, one CSI-IM / NZP CSI-RS resource set may be selected.

[0378] When aperiodic CSI reporting and aperiodic CSI-RS are used, one trigger offset (also referred to as a CSI-RS offset) may be configured in one CSI-RS resource set (NZP CSI-RS resource set, CMI-IM resource set, or SS / PBCH block resource set). The trigger offset may be configured by a higher layer parameter (e.g., aperiodicTriggeringOffset). The trigger 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 of the CSI-IM may follow the trigger offset of the NZP CSI-RS for channel measurement.

[0379] 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.

[0380] The aperiodic CSI-RS may not be transmitted before the first OFDM symbol. The first OFDM symbol may be the symbol carrying DCI that triggers the CSI-RS transmission. If a minimum scheduling offset restriction applies, and if the trigger offset is less than or equal to the minimum scheduling offset restriction, it may not be expected to be triggered by the trigger condition indicated by the CSI request field in the DCI. The transmission of the CSI-RS may be triggered by the trigger condition indicated by the DCI request field in the DCI.

[0381] 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.

[0382] It may not be expected that multiple CSI reports triggered by different DCIs will be transmitted in the same OFDM symbol on one carrier.

[0383] 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.

[0384] The semi-persistent CSI may correspond to a semi-persistent CSI-RS. For a semi-persistent CSI report on a PUSCH, a set of trigger states may be configured by a higher layer parameter (e.g., SemiPersistentOnPUSCH-TriggerStateList). A CSI request field in a DCI scrambled by an SP-CSI-RNTI may activate one trigger state. The terminal device 1 may not expect to receive a first DCI that activates the first semi-persistent CSI report. The first semi-persistent CSI report may have the same CSI report configuration ID as the second semi-persistent CSI report. The second semi-persistent CSI report may be activated by the second DCI. The first DCI and the second DCI may be scrambled by an SP-CSI-RNTI. The terminal device 1 may receive the second DCI before the first DCI.

[0385] For semi-persistent CSI reporting in the PUCCH, the PUCCH resource used to transmit the CSI report may be configured by a higher layer parameter (reportConfigType). The semi-persistent CSI reporting in the PUCCH may be activated by an activation command. The activation command may select one semi-persistent CSI reporting configuration. The terminal device 1 may receive a PDSCH carrying the activation command. 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.

[0386] If semi-persistent CSI resource configuration is configured (for example, if resourceType is set to semiPersistent) and 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. The terminal device 1 may transmit a PUCCH with HARQ-ACK information for the PDSCH carrying the command in slot n.

[0387] 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 transmit a PUCCH with HARQ-ACK information for a PDSCH carrying the deactivation command in slot n.

[0388] A trigger state (e.g., SP-CSI triggering state) may be mapped to one code point of the CSI request field in the DCI. The terminal device 1 may verify 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 activate or deactivate the semi-persistent CSI based on the value set in the special field in the DCI format.

[0389] The terminal device 1 may activate or deactivate the CSI reporting setting indicated by the DCI request field in the DCI.

[0390] 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.

[0391] The terminal device 1 may report the CQI. The terminal device 1 may calculate one CQI index. The modulation scheme, coding, and transport block size of the PDSCH transport block may correspond to one CQI index. The terminal device 1 may receive the PDSCH transport block so as not to exceed a target error probability. The target error probability may be the error probability of the transport block. The target error probability may be 0.1 or 0.00001.

[0392] The terminal device 1 may report the PMI. The terminal device 1 may determine the PMI based on the number of antenna ports (number of CSI ports, number of CSI-RS ports) and the number of layers. The number of layers v 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 1,4,2and i2, or a part or all of i3. 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.

[0393] When an extended CSI port is not set, the number of CSI ports may be any of 4, 8, 12, 16, 24, and 32. When an extended CSI port is set, the number of CSI ports may be any of 48, 64, 96, and 128. When an extended CSI port is not set, the number of CSI ports may be set to any of 4, 8, 12, 16, 24, and 32. When an extended CSI port is set, the number of CSI ports may be set to any of 48, 64, 96, and 128.

[0394] 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 consist of one or more CSI-RS resources. One or more parameters P may be configured for the NZP CSI-RS resources, the NZP CSI-RS resource sets, and some or all of the CSI resource configurations.

[0395] 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.

[0396] 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.

[0397] The one or more parameters P may include a first higher layer parameter (eg, resourceMapping) that determines the number of antenna ports, the Code Domain Multiplexing (CDM) type, the OFDM symbol, and the subcarrier of the CSI-RS resource.

[0398] 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.

[0399] The one or more parameters P may include a third higher layer parameter that determines frequency density. The third higher layer parameter may be configured 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) for each PRB. The third higher layer parameter may be configured to 0.5even, 0.5odd, 1, or 3.

[0400] The one or more parameters P may include a fourth upper layer parameter that determines a CDM type. The fourth upper layer parameter may be set in the first upper layer parameter. The fourth upper layer parameter may determine a value and pattern of the CDM.

[0401] 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.

[0402] The one or more parameters P may include a parameter that determines the power ratio per RE of the NZP CSI-RS and the SS / PBCH block.

[0403] The one or more parameters P may include a scrambling ID, which may be 10 bits in length.

[0404] The one or more parameters P may include a BWP ID, which may be configured in the CSI resource configuration, and which may determine the BWP in which the CSI-RS is located.

[0405] 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.

[0406] 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.

[0407] 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 an NZP CSI-RS resource set for a TRS (an NZP CSI-RS resource set in which the TRS configuration is configured), the antenna ports of the NZP CSI-RS resources in the NZP CSI-RS resource set may be the same.

[0408] The same frequency density and the same number of antenna ports may be configured for all CSI-RS resources for channel measurement in one CSI-RS resource set, and 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 one CSI-RS resource set.

[0409] 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.

[0410] One or more CSI-IM resource sets may be configured, and each CSI-IM resource set may consist of one or more CSI-IM resources. One or more parameters Q may be configured for the CSI-IM resources.

[0411] The one or more parameters Q may include a CSI-IM resource ID. The one or more parameters Q may include a subcarrier position k within one slot of the CSI-IM resource. CSI-IM The one or more parameters Q may include a parameter that determines the OFDM symbol position l within one slot of the CSI-IM resource. CSI-IM The one or more parameters Q may include parameters determining a period and slot offset for periodic / semi-persistent CSI-IM. The one or more parameters Q may include parameters determining a band for CSI-IM.

[0412] 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 ), (kCSI-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).

[0413] 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 a delay time.

[0414] The terminal device 1 may calculate and report a CQI (CQI index) based on the CSI reference resource. The terminal device 1 may assume one or more situations to calculate the CQI.

[0415] In one or more situations, two OFDM symbols may be occupied by the control signal. In one or more situations, the number of PDSCH and DMRS symbols may be 12. In one or more situations, the subcarrier spacing may be the same as that for PDSCH reception. In one or more situations, the CSI reference resource may use the same CP length and subcarrier spacing as the PDSCH. In one or more situations, no RE may be used for the PBCH, PSS, or SSS. In one or more situations, the redundancy version may be 0. In one or more situations, no RE may be allocated for the NZP CSI-RS and the ZP CSI-RS. In one or more situations, a configured maximum number of front-loaded DMRS symbols may be used. In one or more situations, a configured number of additional DMRS symbols may be used. In one or more situations, the OFDM symbol for the PDSCH may not include DMRS. One of the one or more situations may be the bundling of two PRBs.

[0416] 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.

[0417] 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 may report aperiodic CSI by the PUSCH.

[0418] The DCI format may schedule two PUSCHs, in which case aperiodic CSI reporting may be performed in the second PUSCH. The DCI format may schedule more than two PUSCHs, in which case aperiodic CSI reporting may be performed in the penultimate PUSCH.

[0419] Aperiodic CSI reporting in PUSCH may support full-band and sub-band frequency granularity.

[0420] The terminal device 1 may report semi-persistent CSI in the PUSCH in response to decoding of a DCI format that activates a trigger state. A CSI request field in the DCI format may indicate the trigger state to be activated or deactivated.

[0421] Aperiodic CSI reports in the PUSCH may be multiplexed with uplink data in the PUSCH, and semi-persistent CSI reports in the PUSCH may not be expected to be multiplexed with uplink data in the PUSCH.

[0422] When PMI is reported (or fed back) in the PUSCH, the CSI report may consist of Part 1 and Part 2. Part 1 may be a fixed-size payload for indicating the number of information bits in Part 2. Part 1 may be added or transmitted before Part 2.

[0423] 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.

[0424] The terminal device 1 may report CSI using the PUCCH. The CSI report in the PUCCH may be configured by a higher layer. Multiple periodic CSI reports corresponding to multiple CSI report configurations may be configured by a higher layer.

[0425] 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.

[0426] 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.

[0427] 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.

[0428] The bit size of a Rank Indicator (RI) may be determined based at least on the number of antenna ports and the configured rank number, the bit size of a Layer Indicator (LI) may be determined based at least on the rank number, and the bit size of a CSI-RS resource indicator (CRI) may be determined based on the number of CSI-RS resources in the CSI-RS resource set.

[0429] DCI formats 1_0 / 1_1 / 1_2 may be used for scheduling PDSCH. A BWP (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. For example, when the higher layer parameter SecondTPCFieldDCI is configured, the second TPC command (Second TPC command for scheduled PUCCH) field may be included in DCI format 1_1.

[0430] A 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 an upper layer parameter 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. For example, when an 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 a TCI field in the DCI format.

[0431] DCI formats 0_0 / 0_1 / 0_2 may be used for scheduling PUSCH. A BWP (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. For example, when the higher layer parameter SecondTPCFieldDCI is configured, the second TPC command (Second TPC command for scheduled PUSCH) field may be included in DCI format 1_1.

[0432] The CSI-RS (Channel state information reference signal) may be a ZP (zero power) CSI-RS or an NZP (Non-zero power) CSI-RS.

[0433] 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 may be determined by the OFDM symbol index within one slot, the slot index n within one radio frame, μ s,f , and may be initialized based on the scramble ID.

[0434] 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')*wt (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).

[0435] In ZP CSI-RS, β CSIRS may be 0. In NZP CSI-RS, β CSIRS can be greater than 0. CSIRS may be determined based on higher layer parameters (eg, powerControlOffsetSS).

[0436] m in r(m) is floor(n*α)+k'+floor((k bar *ρ) / N RB SC ) may be used. * may be used for multiplication.

[0437] ρ may be frequency density. When the number of antenna ports is 1, α may be ρ. When the number of antenna ports is 2 or more, α may be 2ρ. When ρ is 1, each antenna port may be mapped to every 1 RB. When ρ is 0.5, each antenna port may be mapped to every 2 RBs. When ρ is an even number equal to 0.5, each antenna port may be mapped to even-numbered RBs every 2 RBs. When ρ is an odd number equal to 0.5, each antenna port may be mapped to odd-numbered RBs every 2 RBs.

[0438] Subcarrier position k is the PRB position n and subcarrier position setting k barand a frequency domain-orthogonal cover code (FD-OCC) index k'.

[0439] Subcarrier position k=0 may correspond to subcarrier 0 in CRB0.

[0440] 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).

[0441] Subcarrier position setting k bar may determine the subcarrier position within one slot. bar may be determined based on the number of antenna ports, frequency density, and CDM type. bar may be the subcarrier position within one RB. bar is k i k i-1 may be f(i), where f(i) may be the bit number of the ith bit set to 1 in the bitmap. 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. f(i) may be repeated every ceil(1 / ρ) RBs.

[0442] 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.

[0443] OFDM symbol position l is the OFDM symbol position setting l bar and a Time Domain-Orthogonal Cover Code (TD-OCC) index l'.

[0444] 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 from 0 to 13. l1 may be an integer value from 2 to 12.

[0445] 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.

[0446] 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).

[0447] If the FD-OCC index k' is 0, then w f (k') can be 0. When the FD-OCC index k' is 0 and 1, [w f (0) w f(1)] can be vectors [+1 +1] and [+1 -1]. If the TD-OCC index l' is 0, then w t (l') can be 0. When the 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 sequence index s may be indexed first by the FD-OCC and then by the TD-OCC. For example, if the CDM type is set to FD-OCC with length 2 and TD-OCC with length 4, the sequence index s=0 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=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) wt (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], and 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].

[0448] The CDM group may be indexed by frequency resource first, followed by time resource. For example, if the number of antenna ports is 32 and the CDM type is set to FD-OCC of length 2 (fd-CDM2), the CDM group index j may be indexed in the following order: time-frequency resources (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).

[0449] Terminal device 1 may not expect to receive CSI-RS and DMRS in the same RE. Antenna ports within one CSI-RS resource may be QCL with respect to Type A. Terminal device 1 may expect antenna ports within one CSI-RS resource to have average gain.

[0450] The configuration for the scheduling request may be configured by a higher layer parameter (e.g., SchedulingRequestResourceConfig). The configuration for the scheduling request may determine one PUCCH resource. One PUCCH resource may correspond to PUCCH format 0 or PUCCH format 1. The configuration for the scheduling request may determine a period T and an offset ΔT for the PUCCH carrying the scheduling request. The period may be expressed in OFDM symbols or slots. The terminal device 1 may determine a transmission opportunity for the scheduling request on the PUCCH. mod(n f *N frame,μ slot +n μ s,f -ΔT, T) is 0, the transmission opportunity is in slot number n μ s,fThe configuration for the scheduling request may determine a transmission duration, which may be a number of OFDM symbols.

[0451] For a PUSCH transmission, the configured uplink grant may be configured by a higher layer parameter (e.g., configuredGrantConfig). The resources (resource allocation) of the PUSCH may be configured by a higher layer parameter. The higher layer parameter may be associated with one uplink BWP. A PUSCH transmission may correspond to one configured uplink grant. The higher layer parameter may determine the time domain resource allocation.

[0452] The terminal device 1 may report (transmit) CSI. As a problem, it is necessary to efficiently determine resources on which CSI is reported. Means 1, 2, 3, and 4 may be used to solve the problem. Means 1, 2, 3, and 4 may also be used in combination with each other. FIG. 9 is a diagram illustrating an example of CSI transmission when focusing on one downlink reference signal according to one aspect of the present embodiment. FIG. 10 is a diagram illustrating an example of CSI transmission when focusing on multiple downlink reference signals according to one aspect of the present embodiment.

[0453] The terminal device 1 may receive a downlink reference signal (DL RS) 900. The terminal device 1 may receive the downlink reference signal 900 periodically.

[0454] The downlink reference signal may be a CSI-RS or an SS / PBCH block. The CSI-RS may be an NZP CSI-RS. The CSI-RS may be a periodic CSI-RS or a semi-persistent CSI-RS. For example, the time domain operation in the CSI reporting configuration may be set to 'periodic' or 'semi-persistent'.

[0455] The downlink reference signal 900 may be associated with an indicated TCI state. The downlink reference signal 900 may be associated with a reference signal in the indicated TCI state. For example, the indicated TCI state may include one or two pieces of QCL information. Each piece of QCL information may indicate one reference signal. For example, one indicated TCI state may indicate a QCL relationship between one reference signal and a "physical channel and reference signal." The downlink reference signal 900 may be one reference signal.

[0456] Terminal device 1 is N B downlink reference signals {901,...,901+N B The terminal device 1 may receive downlink reference signals {901, 902, 903, 904, 905, 906, 907, 908}. The terminal device 1 may receive downlink reference signals 901+nb, where nb is a number from 0 to N. B N can be an integer up to -1. B downlink reference signals {901,...,901+N B −1} may correspond to a different resource ID (CSI-RS resource ID or SSB index).

[0457] In FIG. 10, the terminal device 1 is B The terminal device 1 may receive downlink reference signals {901, 902, 903}. B may be 3.

[0458] N B may be the number of downlink reference signals included in the downlink reference signal set 911. B may be the number of candidate beams. The number of candidate beams may be configured by a higher layer parameter. B may be any of 1, 2, 4, and 8.

[0459] Terminal device 1 is N T For example, the terminal device 1 may receive the downlink reference signals 901+nb as N TN transmission opportunities. T The downlink reference signals 901+nb may correspond to the same resource ID (CSI-RS resource ID or SSB index).

[0460] 9, the terminal device 1 may receive a downlink reference signal 901+nb. For example, the downlink reference signal 901+nb may be B downlink reference signals {901,...,901+N B −1}. The terminal device 1 may periodically receive the downlink reference signal 901+nb. The terminal device 1 may periodically receive the downlink reference signal 901+nb in the time window. T 9(a), the terminal device 1 may receive four downlink reference signals 901+nb. For example, the terminal device 1 may receive four downlink reference signals 901+nb in a time window. In FIG. 9(b), the terminal device 1 may receive up to four downlink reference signals 901+nb in a time window.

[0461] In FIG. 10, the terminal device 1 transmits each downlink reference signal 901+nb to N T The terminal device 1 may receive each downlink reference signal 901+nb N times. T The terminal device 1 may receive each of the downlink reference signals {901, 902, 903} at N transmission opportunities in the time window. T In the time window 1000, N T may be 2. In the time window 1001, N T may be 3.

[0462] The time window is N T N T The transmission opportunities may be determined based on a time window. The number of downlink reference signals 901+nb in one time window is N T The number of transmission opportunities corresponding to the downlink reference signals 901+nb in one time window may be NT In one time window, the terminal device 1 may receive N T In one time window, N downlink reference signals 901+nb may be received. T In one time window, the terminal device 1 may transmit N downlink reference signals 901+nb. T In one time window, the downlink reference signal 901+nb may be received N times. T It may be set to receive the signal multiple times.

[0463] In Fig. 9(a), N T In FIG. 9(b), N T In FIG. 9(b), N T may be 3.

[0464] In the means 1-1, the time windows may be determined statically or quasi-statically. In the means 1-1, two time windows may be consecutive to each other. In the means 1-1, the time windows may be serial windows.

[0465] In FIG. 9(a), each time window may be a serial window.

[0466] In the means 1-1, the start position of the time window may be related to either a slot number or a frame number. For example, the start position of the time window 1001 may be the first slot or the first frame after the end of the time window 1000. The start position of the time window may be determined based on a transmission opportunity for a downlink reference signal. For example, the start position of the time window 1001 may be determined based on the first downlink reference signal after the end of the time window 1000. The time window 1000 may be a time window prior to the time window 1001. The slot number or frame number for determining the start position of the time window may be provided by a higher layer parameter. The transmission opportunity for the downlink reference signal for determining the start position of the time window may be provided by a higher layer parameter. For example, the transmission opportunity for the downlink reference signal may be provided as a period of the downlink reference signal.

[0467] In the means 1-1, the length of the time window may be determined by a higher layer parameter. The length of the time window may be determined by the number of slots, the number of frames, the number of seconds, or the number of transmission opportunities. The number of transmission opportunities may be the number of transmission opportunities for the downlink reference signal. For example, the number of transmission opportunities may be the number of transmission opportunities for the downlink reference signal 901+nb. In the means 1-1, different time windows may have the same length. The time windows may end according to the length of the time window.

[0468] In Means 1-2, the time window may be dynamically determined. In Means 1-2, the two time windows may not be consecutive. In Means 1-2, the two time windows may overlap. In Means 1-2, the time window may be a slide window. For example, if different time windows have the same length, the different time windows may overlap. Or, the different time windows may have different lengths. For example, if different time windows have different lengths, the different time windows may be consecutive.

[0469] In FIG. 9(b), each time window may be a slide window.

[0470] In the means 1-2, the start position of the time window may be determined based on the previous time window. For example, the start position of the time window 1001 may be determined based on the first downlink reference signal after the end of the time window 1000. The start position of the time window 1001 may be determined based on the first downlink reference signal after the end of the time window 1000. For example, the start position of the time window 1001 may be determined based on the first downlink reference signal after the previous CSI report. For example, the start position of the time window 1001 may be determined based on the first downlink reference signal after the trigger of the previous CSI report. The start position of the time window may be determined based on the period of the downlink reference signal. For example, the start position of the time window 1001 may be after the end of the time window 1000 and the period of the next downlink reference signal.

[0471] In the means 1-2, the maximum length of the time window may be determined by a higher layer parameter. The maximum length of the time window may be determined by the number of slots, the number of frames, the number of seconds, or the number of transmission opportunities. The number of transmission opportunities may be the number of transmission opportunities for the downlink reference signal. For example, the number of transmission opportunities may be the number of transmission opportunities for the downlink reference signal 901+nb. The number of transmission opportunities may be determined based on the period of the downlink reference signal. The length of the time window may be determined based on the start position and the end position of the time window. The end position of the time window may be determined according to a CSI report. The end position of the time window may be determined based on whether a CSI report is triggered. The end position of the time window may be determined based on the maximum length of the time window. When the event 980 is N C The time window may end when an event 980 associated with one downlink reference signal occurs N times or more. The time window may end when a CSI transmission is triggered. CThe time window may end when N occurrences have occurred. B downlink reference signals {901,...,901+N B Event 980 related to at least one of {N -1} C The time window may end when more than one occurrence occurs.

[0472] The terminal device 1 may calculate an L1-RSRP. For example, the terminal device 1 may calculate an L1-RSRP associated with a downlink reference signal or a downlink reference signal set. For example, in response to receiving a downlink reference signal, the terminal device 1 may calculate an L1-RSRP corresponding to the downlink reference signal. For example, in response to receiving a downlink reference signal set, the terminal device 1 may calculate an L1-RSRP corresponding to the downlink reference signal set. The L1-RSRP may be mRSRP (Measurement RSRP).

[0473] The terminal device 1 may calculate mRSRP (Measured RSRP). The mRSRP may be L1-RSRP. For example, the mRSRP may be determined based on a downlink reference signal. For example, one mRSRP may be determined based on one downlink reference signal. The terminal device 1 may calculate N T N corresponding to the downlink reference signals 901+nb T The terminal device 1 may calculate or determine N mRSRPs. B downlink reference signals {901,...,901+N B -1} corresponding to N B The mRSRP may be calculated or determined based on the downlink reference signal.

[0474] The downlink reference signal set 910 may include at least the downlink reference signal 900. The downlink reference signal set 910 may be a reference signal set for beam failure detection. The downlink reference signal set 910 may be a set of indicated TCI states.

[0475] The downlink reference signal set 911 may include downlink reference signals 901+nb. B downlink reference signals {901,...,901+N B −1}. The terminal device 1 may receive a downlink reference signal set 911. The reference signal set 911 may be set by a higher layer parameter when an event is used.

[0476] In FIG. 10, the DL RS set may be a downlink reference signal set 911.

[0477] The downlink reference signal set 911 is N B downlink reference signals {901,...,901+N B −1} and the downlink reference signal set 900. For example, when the higher layer parameter currentBeamReport is set, the downlink reference signal set 911 may include N B downlink reference signals {901,...,901+N B −1} and the downlink reference signal 900. For example, when the higher layer parameter currentBeamReport is set, the downlink reference signal set 911 may include the downlink reference signal 901+nb and the downlink reference signal 900. When the currentBeamReport is set, the terminal device 1 may expect that the downlink reference signal set 911 always includes the downlink reference signal 900.

[0478] The higher layer parameter currentBeamReport may determine whether CSI 940 includes at least one rRSRP. One rRSRP may be an RSRP associated with downlink reference signal 900 or an L1-RSRP. If currentBeamReport is set, CSI 940 includes N R It may consist of at least N rRSRPs and one rRSRP. R rRSRP is N B downlink reference signals {901,...,901+N BOne rRSRP may be associated with a portion of {{−1}}.

[0479] In the means 2-1, when the currentBeamReport is not set, the downlink reference signal set 911 may or may not include the downlink reference signal 900. When the currentBeamReport is not set, B downlink reference signals {901,...,901+N B −1} may be the same as the downlink reference signal 900.

[0480] In the means 2-1-1a, when the currentBeamReport is not set and the downlink reference signal set 911 includes the downlink reference signal 900, the CSI 940 is R If the currentBeamReport is not set and the downlink reference signal set 911 does not include the downlink reference signal 900, the CSI 940 may be configured with at least N rRSRPs and one rRSRP. R It may consist of at least N rRSRPs. R rRSRP is N B downlink reference signals {901,...,901+N B rRSRP may be associated with a portion of {{number of rRSRPs} -1}, which may not be associated with the downlink reference signal 900. One rRSRP may be associated with the downlink reference signal 900.

[0481] In the method 2-1-1b, if the currentBeamReport is not set, the CSI 940 sets the N R If the downlink reference signal set 911 includes the downlink reference signal 900, then the downlink reference signal set 911 may be configured with at least N rRSRPs. R Each of the rRSRPs is B downlink reference signals {901,...,901+N B −1} and the downlink reference signal 900. For example, N RAt least one of the rRSRPs may be associated with the downlink reference signal 900. If the downlink reference signal set 911 does not include the downlink reference signal 900, then N R Each of the rRSRPs is B downlink reference signals {901,...,901+N B -1}.

[0482] In the means 2-1-1b, when the currentBeamReport is not set and the downlink reference signal set 911 includes the downlink reference signal 900, N R One of the rRSRPs may be associated with the downlink reference signal 900 .

[0483] In Means 2-2, if currentBeamReport is not set, the downlink reference signal set 911 may not be expected to include the downlink reference signal 900. If currentBeamReport is not set, the CSI 940 may not be expected to include one rRSRP. One rRSRP may be associated with the downlink reference signal 900. If currentBeamReport is not set, the downlink reference signal set 910 may include the downlink reference signal 900.

[0484] In means 2-2, the terminal device 1 may store an mRSRP. For example, when the terminal device 1 receives a downlink reference signal, the terminal device 1 may store an mRSRP associated with the downlink reference signal. The terminal device 1 may store an mRSRP corresponding to the downlink reference signal 900.

[0485] The CSI resource configuration 920 may configure the downlink reference signal set 910 .

[0486] The CSI resource configuration 921 may configure a downlink reference signal set 911. The downlink reference signals 901+nb may be configured by higher layer parameters. The downlink reference signals 901+nb may be configured in the downlink reference signal set 911. For example, the downlink reference signal set 911 may include the downlink reference signals 901+nb. Higher layer parameters may be configured for the downlink reference signal set 911. The downlink reference signals 901+nb may be some or all of the CSI-RS, SSB, reference signals associated with configured TCI states, and reference signals associated with activated TCI states. nb is an integer from 0 to N. B It may be an integer of -1.

[0487] The downlink reference signals 901+nb may be associated with activated TCI states. The downlink reference signals 901+nb may be associated with reference signals in activated TCI states. For example, each activated TCI state may include one or two pieces of QCL information. Each piece of QCL information may indicate one reference signal. For example, each activated TCI state may indicate a QCL relationship between one reference signal and a "physical channel and reference signal." Each of the downlink reference signals 901+nb may be one reference signal.

[0488] If the downlink reference signal 901+nb is a first CSI-RS, the downlink reference signal 900 may be a second CSI-RS. If the downlink reference signal 901+nb is a first SS / PBCH block, the downlink reference signal 900 may be a second SS / PBCH block.

[0489] The CSI report configuration 930 may be linked to one or both of the CSI resource configuration 920 and the CSI resource configuration 921. Linking a parameter to a CSI resource configuration may mean that the CSI resource configuration is set in the parameter. Linking a parameter to a CSI resource configuration may mean that the BWP associated with the parameter is the same as the BWP associated with the CSI resource configuration.

[0490] The BWP 950 may be associated with one or both of the CSI resource configuration 920 and the CSI resource configuration 921. The BWP 950 may be associated with the CSI reporting configuration 930.

[0491] The serving cell 970 may be associated with one or both of the CSI resource configuration 920 and the CSI resource configuration 921. The serving cell 970 may be associated with the CSI reporting configuration 930.

[0492] The terminal device 1 may transmit the CSI 940. For example, if the criterion 981 is met, the terminal device 1 may transmit the CSI 940. If the criterion 981 is not met, the terminal device 1 may not transmit the CSI 940. The criterion 981 may be related to at least the event 980. The fact that the criterion 981 is met indicates that the event 980 is N. C The criterion 981 is satisfied when the event 980 occurs N times in a time window. C The criterion 981 is satisfied when the event 980 for the downlink reference signal 901+nb occurs N times. C The criterion 981 is satisfied when the event 980 for the downlink reference signal 901+nb occurs N times in the time window. C Criterion 981 is satisfied when N B downlink reference signals {901,...,901+N B Event 980 for at least one of {N -1} C Criterion 981 is met when the count value is N C It may be more than that.

[0493] A count value may be calculated in one counter. The initial value of the count value may be 0. When an event 980 occurs, the count value may be incremented. Each counter may be set for a downlink reference signal 901+nb. N B The counters are N Bdownlink reference signals {901,...,901+N B The count value may be set to {-1}. When the time window ends, the count value may become 0. At the start of the time window, the count value may be 0.

[0494] 9 and 10, the blackened blocks may be downlink reference signals associated with the occurrence of the event 980. The whitened blocks may be downlink reference signals associated with the absence of the event 980.

[0495] In FIG. 10, C may be a count value. The count value is N B downlink reference signals {901,...,901+N B At the first transmit opportunity in the time window 1000, an event 980 for downlink reference signal 901 may occur. At the first transmit opportunity in the time window 1000, an event 980 for downlink reference signal 902 may occur. At the first transmit opportunity in the time window 1000, an event 980 for downlink reference signal 903 may occur. At the first transmit opportunity in the time window 1000, a count value for downlink reference signal 901 may be 1. At the first transmit opportunity in the time window 1000, a count value for downlink reference signal 902 may be 1. At the first transmit opportunity in the time window 1000, a count value for downlink reference signal 903 may be 1. At the first transmit opportunity in the time window 1000, a count value for downlink reference signal 903 may be 1. At the first transmit opportunity in the time window 1000, a count value for downlink reference signal 901 may be 1. B The count value for any of the downlink reference signals {901, 902, 903} is N CSince it is not more than this, no CSI may be transmitted, and the time window 1000 may continue. At the second transmission opportunity in the time window 1000, an event 980 for the downlink reference signal 901 may occur. At the second transmission opportunity in the time window 1000, an event 980 for the downlink reference signal 902 may not occur. At the first transmission opportunity in the time window 1000, an event 980 for the downlink reference signal 903 may not occur. At the second transmission opportunity in the time window 1000, the count value for the downlink reference signal 901 may be 2. At the second transmission opportunity in the time window 1000, the count value for the downlink reference signal 902 may be 1. At the second transmission opportunity in the time window 1000, the count value for the downlink reference signal 903 may be 1. At the second transmission opportunity in the time window 1000, the count value for the downlink reference signal 901 may be N. C Since the count value for the downlink reference signal 901+nb is equal to or greater than N, the CSI may be transmitted and the time window 1000 may end. C If so, the transmission of CSI or the trigger for CSI transmission may be associated with downlink reference signal 901+nb. C may be 2.

[0496] The terminal device 1 may detect an event or the occurrence of an event. The terminal device 1 may trigger an event. The terminal device 1 may trigger, evaluate, or detect an event 980. The terminal device 1 may trigger, evaluate, or detect an event 980 based on mRSRP.

[0497] The terminal device 1 may verify or evaluate whether an event 980 occurs or is satisfied when at least the downlink reference signal 901+nb is received. The terminal device 1 may verify or evaluate whether an event 980 occurs or is satisfied when at least the downlink reference signal 900 is received. Detecting an event may also mean that the event occurs or is satisfied.

[0498] Event 980 may be the first mRSRP being greater than or exceeding the second mRSRP. The occurrence of event 980 may be the first mRSRP being greater than or exceeding the second mRSRP. The first mRSRP may be the mRSRP of downlink reference signal 901+nb. For example, in event 980 for downlink reference signal 901+nb, the first mRSRP may be the mRSRP of downlink reference signal 901+nb. The first mRSRP may be greater than or exceeding the second mRSRP. B downlink reference signals {901,...,901+N B The second mRSRP may be at least one mRSRP out of {{mRSRPs} -1}. The second mRSRP may be an mRSRP based on the downlink reference signal 900. For example, the second mRSRP may be the sum of the mRSRP of the downlink reference signal 900 and a threshold. The threshold may be configured by a higher layer parameter. The threshold may be configured in the CSI report configuration 930. In means 2-2, the mRSRP of the downlink reference signal 900 may be stored. Event 980 may correspond to the CSI report configuration 930. In event 980 for a certain downlink reference signal, the first mRSRP may be the mRSRP of the certain downlink reference signal.

[0499] CSI940 is N R rRSRPs, or N R +1 rRSRP. rRSRP (reported RSRP) may be the reported L1-RSRP. rRSRP may be the RSRP included in the CSI. N RAt least one of the +1 rRSRPs may be an L1-RSRP associated with the downlink reference signal 900. The rRSRP may be determined based on the mRSRP. The terminal device 1 may calculate the mRSRP for a certain downlink reference signal and report the rRSRP.

[0500] When the reporting amount setting is set to RSRP, the CSI may include L1-RSRP or rRSRP. For example, the reporting amount setting may be set to rRSRP. The rRSRP may be the RSRP for a terminal-initiated beam report. When transmission means A or transmission means B is used, the CSI may include rRSRP. When transmission means A and transmission means B are not used, the CSI may not include rRSRP and may include L1-RSRP.

[0501] In the means 3-1, each rRSRP may be an average value of multiple mRSRPs. For example, each rRSRP may be an average value of N T The average value of mRSRPs may be N T mRSRPs are T For example, each rRSRP may correspond to N downlink reference signals 901+nb. C The average value of mRSRPs may be N C mRSRPs are C 901+nb, and may correspond to downlink reference signals 901+nb.

[0502] In Figure 9(b), N T The mRSRPs of the downlink reference signals may be averaged. The averaged mRSRP may be included in the CSI. T may be 2. In the time window 1001, N T may be 3.

[0503] In the means 3-2, each rRSRP may be the latest value of a plurality of mRSRPs. For example, each rRSRP may be the latest value of N T The most recent values ​​of the mRSRPs may be N T mRSRPs are T 901+nb, and may correspond to downlink reference signals 901+nb.

[0504] In Figure 9(b), N T The mRSRP of the th downlink reference signal may be included in the CSI. In time window 1000, the latest value of mRSRP may be associated with the second downlink reference signal. In time window 1001, the latest value of mRSRP may be associated with the third downlink reference signal.

[0505] In the means 3-3, each rRSRP may be the maximum value, minimum value, or median value of a plurality of mRSRPs. For example, each rRSRP may be the maximum value, minimum value, or median value of N T It may be the maximum, minimum or median value of the N mRSRPs. T mRSRPs are T 901+nb, and may correspond to downlink reference signals 901+nb.

[0506] CSI940 is N R It may contain at least N rRSRPs. R rRSRP is N B downlink reference signals {901,...,901+N B -1} out of N R For example, N B downlink reference signals {901,...,901+N B -1} based on N B N mRSRPs may be calculated. B Based on mRSRPs, N B N rRSRPs may be calculated or determined. Each rRSRP may be calculated or determined based on some or all of the means 3-1, 3-2, and 3-3. B N out of rRSRPs R N rRSRPs may be selected. R may be determined by nrofReportedRS.

[0507] In Figure 10, N Rmay be 2. The rRSRP associated with downlink reference signal 901 may be rRSRP 1021. The rRSRP associated with downlink reference signal 902 may be rRSRP 1022. The rRSRP associated with downlink reference signal 903 may be rRSRP 1023. In time window 1000, criterion 981 may be met. In time window 1001, criterion 981 may be met.

[0508] In Measure 4-1, N R The rRSRPs may be determined in descending order of rRSRP. B Top N rRSRPs R N R may be selected as the rRSRP.

[0509] In Measure 4-1, N R At least one of the rRSRPs may be an rRSRP associated with the transmission of CSI 940. The rRSRP associated with the transmission of CSI 940 may be an rRSRP corresponding to a downlink reference signal that meets criteria 981. R At least one of the N rRSRPs may be determined independently of whether the rRSRP is high. R At least one of the rRSRPs may be the rRSRP for the downlink reference signal that triggers the transmission of the CSI 940. R −1) rRSRPs may be determined in descending order of rRSRP. B -Top N of 1 rRSRP R -1 is N R -1 rRSRP may be selected.

[0510] In Measure 4-2, N R The rRSRPs may be determined in descending order of count value. B downlink reference signals {901,...,901+N B -1}, the top N R downlink reference signals corresponding to the count values ​​are selected, and N R rRSRP is selected N RThe means 4-2 may determine the number of downlink reference signals based on the number of times the event 980 occurs. R N rRSRPs may be determined. B downlink reference signals {901,...,901+N B The number of times the event 980 occurred may be nc. nc may be included in the CSI 940. nc may be determined for the downlink reference signal 901+nb. If nc is N C When this occurs, CSI 940 may be transmitted.

[0511] In FIG. 10 , R may be a ranking. For example, in the second transmission opportunity in time window 1000, R for downlink reference signal 901 may be 1. In the second transmission opportunity in time window 1000, R for downlink reference signal 902 may be 2. In the second transmission opportunity in time window 1000, R for downlink reference signal 903 may be 3. R for a downlink reference signal may mean that the mRSRP for the downlink reference signal is the Rth largest. R for a downlink reference signal may mean that the count value for the downlink reference signal is the Rth largest. CSI triggered in time window 1000 may include rRSRPs associated with downlink reference signal 901 and downlink reference signal 902. In FIG. 10 , in the third transmission opportunity in the fifth time window, R for downlink reference signal 901 may be 1. In the third transmission opportunity in the fifth time window, R for downlink reference signal 902 may be 2. At the third transmission opportunity in the fifth time window, R for the downlink reference signal 903 may be 3. At the fifth time window, the event 980 for the downlink reference signal 903 may be N CIn the fifth time window, criteria 981 associated with downlink reference signal 903 may be satisfied. The CSI triggered in the fifth time window may include rRSRP associated with downlink reference signal 903 and downlink reference signal 901.

[0512] The terminal device 1 may execute one of the transmitting means A and the transmitting means B. For example, if the event 980 is configured, one or both of the transmitting means A and the transmitting means B may be configured. For example, if the criterion 981 is satisfied, the terminal device 1 may execute one of the transmitting means A and the transmitting means B. The transmitting means A and the transmitting means B may be means for transmitting the CSI 940. Configuring the transmission of the CSI 940 may mean configuring one or both of the transmitting means A and the transmitting means B. Which of the transmitting means A and the transmitting means B is executed may be configured by a higher layer parameter. The higher layer parameter may be configured for the CSI report configuration 930.

[0513] The terminal device 1 may transmit an uplink physical channel 990 and an uplink physical channel 991. In the transmission means A, the terminal device 1 may receive the DCI 1010. For example, in the transmission means A, the terminal device 1 may receive a PDCCH in which the DCI 1010 is arranged.

[0514] In the transmitting means A, the uplink physical channel 990 may be a PUCCH. The uplink physical channel 990 may include at least a scheduling request. The scheduling request may be a part or all of the UCI. The scheduling request may be a request to schedule the uplink physical channel 991. The scheduling request may be configured with 1 bit. If the scheduling request indicates 0, the uplink physical channel 991 may not be scheduled. If the scheduling request indicates 1, the uplink physical channel 991 may be scheduled. If an event is detected, the scheduling request may be set to 1. If no event is detected, the scheduling request may be set to 0.

[0515] In the transmitting means B, the uplink physical channel 990 may be a PUCCH. The uplink physical channel 990 may include at least notification information. The notification information may be part or all of the UCI. The notification information may be information for notifying transmission of the uplink physical channel 991. The notification information may be composed of 1 bit. If the notification information indicates 0, the terminal device 1 may not transmit the uplink physical channel 991. If the notification information indicates 1, the terminal device 1 may transmit the uplink physical channel 991. If an event is detected, the notification information may be set to 1. If an event is not detected, the notification information may be set to 0.

[0516] In the transmitting means A, the terminal device 1 may receive the DCI 1010. In the transmitting means A, the terminal device 1 may receive the PDCCH in which the DCI 1010 is arranged. In the transmitting means B, the terminal device 1 may not receive the DCI 1010. In the transmitting means B, the terminal device 1 may receive the PDCCH in which the DCI 1010 is arranged. The DCI 1010 may instruct the transmission of the uplink physical channel 991. The DCI 1010 may schedule the uplink physical channel 991.

[0517] The terminal device 1 may transmit CSI 940. Transmitting the CSI may be transmitting a CSI report, or may be reporting the CSI. The terminal device 1 may transmit an uplink physical channel 991. For example, the terminal device 1 may transmit CSI 940 on the uplink physical channel 991. For example, the terminal device 1 may transmit the uplink physical channel 991 accompanied by the CSI 940. For example, the terminal device 1 may transmit the CSI 940 using the uplink physical channel 991. Transmitting the CSI may be transmitting the uplink physical channel accompanied by the CSI.

[0518] Terminal device 1 is N T For example, the terminal device 1 may receive N downlink reference signals. T N downlink reference signals T The terminal device 1 may receive the CSI at the transmission opportunities. The terminal device 1 may transmit the CSI. The CSI may be configured with at least the first rRSRP. For example, the CSI may include at least the first rRSRP. The CSI may be CSI 940. T N downlink reference signals may correspond to the same resource ID. T The downlink reference signal may be the downlink reference signal 901+nb.

[0519] The time window is N T N transmission opportunities may be set or determined. T may be the number of transmission opportunities for downlink reference signals transmitted in one time window. T may be determined based on the transmission period and time window of the downlink reference signal.

[0520] The length of the time window may be determined by a higher layer parameter. For example, the higher layer parameter may provide the number of slots, the number of frames, or the number of transmission opportunities. The length of the time window may be determined by the number of slots, the number of frames, or the number of transmission opportunities. The start position of the time window may be determined based on a slot number, a frame number, or a downlink reference signal transmission opportunity. For example, the start position of the time window may be the first slot after the end of the previous time window. For example, the start position of the time window may be the first frame after the end of the previous time window. For example, the start position of the time window may be determined by the first downlink reference signal transmission opportunity after the end of the previous time window.

[0521] The maximum length of the time window may be determined by a higher layer parameter. For example, the higher layer parameter may provide the number of slots, frames, or transmission opportunities. The maximum length of the time window may be determined by the number of slots, frames, or transmission opportunities. The time window may end if criterion 981 is met. The time window may continue if criterion 981 is not met. The time window may end if it reaches the maximum length of the time window. The length of the time window may be determined based on the start position of the time window and the end position of the time window. The length of the time window may be determined based on whether criterion 981 is met. Meeting the criterion 981 may mean that CSI is transmitted. Meeting the criterion 981 may mean that a downlink reference signal triggers transmission of CSI. Meeting the criterion 981 may mean that N T N downlink reference signals C More than one event 980 may occur. Criterion 981 is satisfied when N events 980 for downlink reference signals occur. CThe start position of the time window may occur more than once. The start position of the time window may be determined based on the end of a previous time window. For example, the start position of the time window may be the first slot after the end of the previous time window. For example, the start position of the time window may be the first frame after the end of the previous time window. For example, the start position of the time window may be determined based on the first downlink reference signal after the end of the previous time window. For example, the start position of the time window may be determined based on the first transmission opportunity after the end of the previous time window. This transmission opportunity may be a downlink reference signal transmission opportunity.

[0522] The CSI may be configured with at least a first rRSRP. T The downlink reference signals may be associated with some or all of the downlink reference signals.

[0523] Terminal device 1 is N T N downlink reference signals T The first mRSRP may be calculated as N T The first rRSRP may be the average value of N mRSRPs. T For example, the first rRSRP may be the most recent value of N mRSRPs. T It may be the second mRSRP. T mRSRPs are T It may be RSRP for the downlink reference signals.

[0524] Terminal device 1 is N B A downlink reference signal set may receive N downlink reference signals. B The downlink reference signals may include N B The downlink reference signals may correspond to different resource IDs. The terminal device 1 may transmit CSI. The terminal device 1 may be configured to transmit CSI. The CSI is N R N rRSRPs may be included. R rRSRP is N BFor example, the N B rRSRP is N B may be calculated based on N downlink reference signals. R rRSRP is N B It may be part of the rRSRP.

[0525] The terminal device 1 may receive the n-th downlink reference signal, where n is a number from 1 to N. B The nth event may be an integer greater than or equal to 1. The nth event may be associated with the nth downlink reference signal. The nth event may be event 980. The nth event may be event 980 for the nth downlink reference signal.

[0526] The nth event is N C If the nth event occurs more than once in the time window, then CSI may be transmitted. C If the nth event-based criteria 981 is met, the CSI may be transmitted.

[0527] 1st to Nth B All of the events are N C If the CSI occurs less than N times, the CSI may not be transmitted. B Each of the events in N C If the CSI occurs less than N times, the CSI may not be transmitted. B If none of the event-based criteria 981 are met, then no CSI may be transmitted.

[0528] The occurrence of the n-th event may be when the n-th mRSRP of the n-th downlink reference signal is equal to or greater than the reference mRSRP. The reference mRSRP may be the second mRSRP at the event 980. The n-th mRSRP may be the first mRSRP at the event 980.

[0529] N B N downlink reference signals B N rRSRPs may be calculated. R rRSRP is NB rRSRPs may be determined in descending order. For example, R rRSRP is N B Top N rRSRPs R For example, N R The rRSRPs are sorted in descending order of rRSRP. B The rRSRP may be selected from:

[0530] N R The downlink reference signals are assigned to N B The number of occurrences of an event may be selected from N downlink reference signals. B The event occurrence count may be calculated for each of the N downlink reference signals. C If N is greater than or equal to N, then CSI may be transmitted. R The downlink reference signals are sorted in descending order of the number of occurrences of the event. B N downlink reference signals may be selected. R rRSRP is N R It may be calculated based on downlink reference signals.

[0531] The terminal device 1 receives the downlink reference signal 900 and N B downlink reference signals {901,...,901+N B The downlink reference signal set 911 may receive N B downlink reference signals {901,...,901+N B −1}. The terminal device 1 may transmit CSI.

[0532] If currentBeamReport is set, the downlink reference signal set 911 may include the downlink reference signal 900. If currentBeamReport is set, the CSI may include rRSRP 1020. rRSRP 1020 may be calculated based on the downlink reference signal 900. rRSRP 1020 may be related to the downlink reference signal 900. If currentBeamReport is set, the CSI may include N R N rRSRPs may be included.R rRSRP is N B downlink reference signals {901,...,901+N B -1}(N R If currentBeamReport is set, CSI is rRSRP 1020 and N R N rRSRPs may be included. R may be determined by nrofReportedRS.

[0533] If the currentBeamReport is not set, the downlink reference signal set 911 may or may not include the downlink reference signal 900. If the currentBeamReport is not set, the CSI is N R N rRSRPs may be included. R The rRSRPs are N R may be calculated based on N downlink reference signals. R The rRSRPs are N R The downlink reference signals may be associated with the downlink reference signals.

[0534] If the currentBeamReport is not set and the downlink reference signal set 911 includes the downlink reference signal 900, the CSI is calculated as rRSRP 1020 and (N R -1) rRSRPs. R -1) rRSRPs are N B downlink reference signals {901,...,901+N B -1}(N R -1).

[0535] If the currentBeamReport is not set and the downlink reference signal set 911 does not include the downlink reference signal 900, the CSI is R N rRSRPs may be included. R rRSRP is N B downlink reference signals {901,...,901+NB -1}(N R It may be an rRSRP associated with the individual.

[0536] rRSRP 1020 may be calculated as an absolute value. If currentBeamReport is set, rRSRP 1020 may be calculated as an absolute value, and N R The rRSRPs may be calculated as relative values. If currentBeamReport is not set, N R One of the rRSRPs may be calculated as an absolute value, and the remaining (N R -1) rRSRP may be calculated as a relative value. If currentBeamReport is not set and CSI includes rRSRP 1020, rRSRP 1020 may be calculated as an absolute value, and (N R If currentBeamReport is not set and the downlink reference signal set 911 includes the downlink reference signal 900, the rRSRP 1020 may be calculated as an absolute value, and (N R -1) rRSRP may be calculated as a relative value.

[0537] The absolute value of rRSRP may be defined using 7 bits. The range of the absolute value of rRSRP may be -140 dBm to -44 dBm. The absolute value of rRSRP may be given in 1 dB intervals. The relative value of rRSRP may be defined using 4 bits. The relative value of rRSRP may be calculated as the difference between the absolute values ​​of rRSRP. The relative value of rRSRP may be given in 2 dB intervals.

[0538] Various aspects of the device according to one aspect of this embodiment will be described below.

[0539] The programs running on the base station device 3 and terminal device 1 according to one aspect of the present invention may be programs (programs that cause a computer to function) that control a CPU (Central Processing Unit) or the like so as to realize the functions of the above-described embodiment according to one aspect of the present invention. Information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and 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.

[0540] Note that a part of the terminal device 1 and the base station device 3 in the above-described embodiment may be realized by a computer. In this case, a program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed to realize the function.

[0541] 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.

[0542] 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.

[0543] 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.

[0544] 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 have some or all of the functions of an upper node for the eNodeB and / or the gNB.

[0545] 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 as a chipset. Each functional block of the terminal device 1 and base station device 3 may be individually formed into a chip, or some or all of them may be integrated into a chip. Furthermore, the integrated circuit method is not limited to LSI, and may be realized using a dedicated circuit or a general-purpose processor. Furthermore, if an integrated circuit technology that can replace LSI emerges due to advances in semiconductor technology, it is also possible to use an integrated circuit based on that technology.

[0546] 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.

[0547] Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design modifications and the like are also included within the scope of the gist of the present invention. Furthermore, various modifications of one aspect of the present invention are possible 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.

[0548] One aspect of the present invention can be used, for example, in a communication system, a communication device (e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (e.g., a communication chip), or a program.

[0549] 1 (1A, 1B, 1C) Terminal device 3 Base station device 10, 30 Radio transceiver unit 10a, 30a Radio transmitter unit 10b, 30b Radio receiver unit 11, 31 Antenna unit 12, 32 RF unit 13, 33 Baseband unit 14, 34 Upper layer processing unit 15, 35 Medium access control layer processing unit 16, 36 Radio resource control layer processing unit 91, 92, 93, 94 Search space set 300 Component carrier 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 Point 3001, 3002 Resource grid 3003, 3004 BWP 3011, 3012, 3013, 3014 Offset 3100, 3200 Common resource block set 900, 901, 902, 903, 904, 905, 906, 907, 908 Downlink reference signal 910, 911 Downlink reference signal set (CSI resource set) 920, 921 CSI resource configuration 930 CSI report configuration 940 CSI 950 Downlink BWP 960 Uplink BWP 970 Serving cell 980 Event 981 Reference 990, 991 Uplink physical channel 1000, 1001 Time window 1010 DCI 1020, 1021, 1022, 1023 rRSRP

Claims

N B a receiver for receiving downlink reference signals; a transmitter configured to transmit CSI; One downlink reference signal set is composed of N B the downlink reference signals, The CSI is N R containing rRSRPs, N R The rRSRP is N B associated with a portion of the downlink reference signals, the n-th downlink reference signal is associated with an n-th event; The nth event is N C If the CSI occurs more than once, the CSI is transmitted. All the above events are N C If the occurrence is less than 100 times, the CSI is not transmitted by the terminal device. 　 The terminal device according to claim 1 , wherein the occurrence of the n-th event is determined to be that the n-th mRSRP of the n-th downlink reference signal is equal to or greater than a reference mRSRP. N B N based on the downlink reference signals B rRSRPs are calculated, N R The rRSRP is N B The terminal device according to claim 1 , wherein the rRSRPs are determined in descending order from the number of the rRSRPs. 　 Based on the number of occurrences of the event, N B N downlink reference signals R Pieces are selected, N R The rRSRP is N R The terminal device according to claim 1 , wherein the calculation is based on the downlink reference signals. N B a transmitter for transmitting downlink reference signals; a receiving unit configured to receive CSI; One downlink reference signal set is composed of N B the downlink reference signals, N B the downlink reference signals correspond to different resource IDs; The CSI is N R containing rRSRPs, N R The rRSRP is N B associated with a portion of the downlink reference signals, the n-th downlink reference signal is associated with an n-th event; The nth event is N C If the CSI occurs more than once, the CSI is transmitted. All the above events are N C If the occurrence is less than the predetermined number of times, the base station device does not transmit the CSI. 　 The base station apparatus according to claim 5 , wherein the occurrence of the n-th event is determined to be an occurrence of an n-th mRSRP of the n-th downlink reference signal that is equal to or greater than a reference mRSRP. N B N based on the downlink reference signals B rRSRPs are calculated, N R The rRSRP is N B The base station apparatus according to claim 5 , wherein the rRSRPs are determined in descending order from the rRSRPs. 　 Based on the number of occurrences of the event, N B N downlink reference signals R Pieces are selected, N R The rRSRP is N R The base station apparatus according to claim 5 , wherein the calculation is based on the downlink reference signals.

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