Terminal device, base station device, and communication method

Abstract

To provide a terminal device, a base station, and a communication method that enable efficient communication with a terminal device equipped with a plurality of antennas.SOLUTION: In a wireless communication system, a terminal device includes a receiving unit that receives a PDCCH in which a DCI that schedules a PUSCH is arranged, and a transmitting unit that transmits a PUSCH. The transmitting unit transmits capability information of the terminal. The capability information of the terminal is information indicating the number of first antenna ports in a first dimension and a second dimension. The receiving unit receives an RRC parameter, determines a precoding matrix for the PUSCH based at least on the DCI and the RRC parameter, and performs precoding based at least on the precoding matrix. The RRC parameter is information for calculating a precoding matrix.SELECTED DRAWING: Figure 9

Description

[Technical field]

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

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

[0003] 3GPP is currently studying the next-generation standard (NR: New Radio) to propose it 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 meet the 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 considering the expansion of services supported by NR (non- Patent document 2). [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT docomo, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th - 10th March, 2016. [Non-Patent Document 2] “Release 17 package for RAN”, RP-193216, RAN chairman, RAN1 chairman, RAN2 chairman, RAN3 chairman, 3GPP TSG RAN Meeting #86, Sitges, Spain, 9th ― 12th December, 2019 [Non-Patent Document 3] “Release 18 package summary”, RP-213469, RAN chairman, RAN1 chairman, RAN2 chairman, RAN3 chairman, 3GPP TSG RAN Meeting #94-e, 6th ― 17th December, 2021 Summary of the Invention [Problem to be solved by the invention]

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

[0007] (1) A first aspect of the present invention is a terminal device comprising: a receiving unit that receives a PDCCH in which DCI that schedules a PUSCH is arranged; and a transmitting unit that transmits the PUSCH, wherein the transmitting unit transmits terminal capability information, the terminal capability information being information indicating the number of first antenna ports in a first dimension and a second dimension; the receiving unit receives RRC parameters, a precoding matrix for the PUSCH is determined based at least on the DCI and the RRC parameters, the precoding is performed based at least on the precoding matrix, and the RRC parameters are information for calculating the precoding matrix.

[0008] (2) Furthermore, the capability information of the terminal is determined based on one or both of the antenna configuration and channel state information of the terminal device.

[0009] (3) Furthermore, the information for calculating the preceding matrix is ​​information indicating the number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information.

[0010] (4) Moreover, a second aspect of the present invention is a base station device comprising: a transmitter that transmits a PDCCH in which DCI that schedules a PUSCH is arranged; and a receiver that receives the PUSCH, wherein the receiver receives capability information of a terminal, the capability information of the terminal being information indicating the number of first antenna ports in a first dimension and a second dimension; the transmitter transmits RRC parameters for determining a codebook to be used in precoding for the PUSCH, determines that a precoding matrix for the PUSCH is determined based at least on the DCI and the RRC parameters, determines that the precoding is performed based at least on the precoding matrix, and the RRC parameters are information for calculating the precoding matrix.

[0011] (5) Furthermore, the capability information of the terminal is determined based on one or both of the antenna configuration and channel state information of the terminal device.

[0012] (6) Furthermore, the information for calculating the preceding matrix is ​​information indicating a number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information.

[0013] (7) A third aspect of the present invention is a communication method for use in a terminal device, comprising: receiving a PDCCH including DCI for scheduling a PUSCH; and transmitting capability information of a terminal, the capability information being information regarding a capability for a terminal device to determine a precoding matrix, receiving an RRC parameter for determining a codebook to be used in a precoding; determining a precoding matrix based at least on the DCI and the RRC parameter; A precoding matrix is ​​provided for the PUSCH. The process is carried out.

[0014] (8) Furthermore, the capability information of the terminal is determined based on one or both of the antenna configuration and channel state information of the terminal device.

[0015] (9) Furthermore, the information for calculating the preceding matrix is ​​information indicating a number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information.

[0016] (10) Moreover, a fourth aspect of the present invention is a communication method used in a base station device, comprising the steps of: transmitting a PDCCH including a DCI for scheduling a PUSCH; and receiving a PUSCH, receiving terminal capability information, the terminal capability information being information regarding the capability of the terminal device for determining a precoding matrix; transmitting RRC parameters for determining a codebook to be used in precoding for the PUSCH; determining that a precoding matrix is ​​determined based at least on the DCI and the RRC parameters; and determining that precoding for the PUSCH is performed based at least on the precoding matrix.

[0017] (11) Furthermore, the capability information of the terminal is determined based on one or both of an antenna configuration and channel state information of the terminal device.

[0018] (12) Furthermore, the information for calculating the preceding matrix is ​​information indicating a number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information. Effect of the Invention

[0019] According to the present invention, the terminal device can perform communication efficiently, and the base station device can perform communication efficiently. [Brief description of the drawings]

[0020] [Figure 1] 1 is a conceptual diagram of a wireless communication system according to an embodiment of the present invention. [Diagram 2] 1 is an example showing a relationship between a subcarrier spacing setting μ, the number of OFDM symbols per slot Nslot symb, and a cyclic prefix (CP) setting according to an aspect of the present embodiment. [Diagram 3] FIG. 2 is a diagram illustrating an example of a method for configuring a resource grid according to an aspect of the present embodiment. [Figure 4] FIG. 3 is a diagram illustrating an example of the configuration of a resource grid 3001 according to an aspect of the present embodiment. [Diagram 5] 2 is a schematic block diagram illustrating a configuration example of a base station device 3 according to an aspect of the present embodiment. FIG. [Figure 6] 1 is a schematic block diagram showing an example of the configuration of a terminal device 1 according to an aspect of the present embodiment. [Figure 7] FIG. 2 is a diagram illustrating an example of the configuration of an SS / PBCH block according to one embodiment of the present invention. [Figure 8] A diagram showing an example of a monitoring opportunity for a search area set according to one aspect of this embodiment. [Figure 9] FIG. 11 is a diagram illustrating an example of a method for applying a precoding matrix according to an aspect of this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described.

[0022] floor(C) may be a floor function for real number C. For example, floor(C) may be a function that outputs the largest integer that does not exceed real number C. ceil(D) may be a ceiling function for real number D. For example, ceil(D) may be a function that outputs the smallest integer that does not fall below real number D. mod(E,F) is a function that outputs the remainder when E is divided by F. mod(E,F) is a function that outputs the value corresponding to the remainder when E is divided by F. exp(G)=e^G, where e is Napier's constant. H^I is H to the Ith power. max(J,K) is a function that outputs the maximum value among J and K. Here, if J and K are equal, max(J,K) is a function that outputs J or K. min(L,M) is a function that outputs the maximum value among L and M. Here, if L and M are equal, min(L,M) is a function that outputs L or M. round(N) is a function that outputs the integer value closest to N. "·" indicates multiplication.

[0023] In the wireless communication system according to the embodiment, at least OFDM (Orthogonal Frequency Division Multiplex) is used. An OFDM symbol is a unit of time domain of OFDM. An OFDM symbol includes at least one or more subcarriers. The OFDM symbol is converted into a time-continuous signal in baseband signal generation. In the downlink, at least CP-OFDM (Cyclic Prefix - Orthogonal Frequency Division Multiplex) is used. In the uplink, either CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform - spread - Orthogonal Frequency Division Multiplex) is used. DFT-s-OFDM may be obtained by applying transform precoding to CP-OFDM.

[0024] The OFDM symbol may be a name including a CP added to the OFDM symbol, that is, a certain OFDM symbol may be configured to include the certain OFDM symbol and a CP added to the certain OFDM symbol.

[0025] Fig. 1 is a conceptual diagram of a wireless communication system according to an aspect of the present embodiment. In Fig. 1, the wireless communication system includes at least terminal devices 1A to 1C and a base station device 3 (BS#3: Base station#3). Hereinafter, the terminal devices 1A to 1C are also referred to as terminal device 1 (UE#1: User Equipment#1).

[0026] The base station device 3 may be configured to include one or more transmission devices (or transmission points, transmission / reception devices, transmission / reception points). When the base station device 3 is configured with multiple transmission devices, each of the multiple transmission devices may be located at a different position.

[0027] The base station device 3 may provide one or more serving cells. The serving cell may be defined as a set of resources used for wireless communication. The serving cell may also be called a cell.

[0028] A serving cell may be configured to include one downlink component carrier (downlink carrier) and / or one uplink component carrier (uplink carrier). A serving cell may be configured to include two or more downlink component carriers and / or two or more uplink component carriers. Downlink component carriers and uplink component carriers are also collectively referred to as component carriers (carriers).

[0029] For example, one resource grid may be provided for each component carrier. Also, 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 an antenna port p, a certain subcarrier spacing configuration μ, and a certain transmission direction x.

[0030] The resource grid is size,μ grid,x N RB sc where The base grid is composed of common resource blocks N start,μ grid,x It starts from. Also, Resource Block N start,μ grid,x is also referred to as the reference point of the resource grid.

[0031] The resource grid is subframe,μ symb It contains OFDM symbols.

[0032] The subscript x, which is added to the resource grid related parameters, specifies the sending direction. For example, the subscript x indicates either the downlink or the uplink. It may also be used for

[0033] N size,μ grid,x is indicated by parameters provided by the RRC layer (e.g., N start,μ grid,x is the bandwidth setting indicated by parameters provided by the RRC layer (e.g., parameter OffsetToCarrier). The offset and band settings are the configuration of the SCS-specific carrier. This is the setting used for.

[0034] Subcarrier spacing (SCS) for a certain subcarrier spacing setting μ )Δf is Δf=2 μ 15 kHz. Here, the subcarrier spacing setting μ is 0 , 1, 2, 3, or 4.

[0035] FIG. 2 shows a subcarrier interval setting μ and the number of OFDM symbols per slot N according to one embodiment of the present invention. slot symb 2A is an example showing the relationship between the subcarrier interval setting μ and the CP setting of normal cyclic prefix (CP). slot symb =14, N frame,μ slot =40, N subframe, μ slot In FIG. 2B, for example, the subcarrier spacing setting μ is 2. If the CP setting is an extended cyclic prefix, N slot symb =12, N frame ,μ slot =40, N subframe,μ slot =4.

[0036] 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= 480kHz. f =409 6. The constant κ is κ=Δf max N f / (Δf ref N f,ref ) = 64. Δf ref is 1 It is 5kHz. f,ref is 2048.

[0037] 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 frames (system frames, frames) may be organized into T f =(Δf max N f / 100)·T s = 10 ms. A radio frame is made up 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 It is.

[0038] An OFDM symbol is a unit of time domain for one communication method. For example, an OFDM symbol may be a unit of time domain for CP-OFDM. Also, an OFDM symbol may be a unit of time domain for DFT-s-OFDM.

[0039] A slot may consist of multiple OFDM symbols. For example, N consecutive slot symb One slot may be composed of N OFDM symbols. For example, in the normal CP setting, slot symb In addition, in the setting of the extended CP, N slot symb=12.

[0040] For a given subcarrier spacing setting μ, the number and index of slots contained in a subframe may be given. For example, slot index n μ s ranges from 0 to N in the subframe. subframe,μ slot The subcharacters may be given in ascending order in the range -1 to +1. For the purpose of setting the rear interval μ, the number and index of slots included in the radio frame may be given. Also, the slot index n μ s,f ranges from 0 to N in the radio frame. frame,μ slot Integer values ​​in the range -1 through increasing order may be given.

[0041] 3 is a diagram showing an example of a method for configuring a resource grid according to an aspect of the present embodiment. The horizontal axis of FIG. 3 indicates the frequency domain. In FIG. 3, the subcarrier spacing μ 1 A configuration example of a resource grid of the above and a subcarrier spacing μ 2 In this way, one or more subcarrier spacings may be set for a certain component carrier. 1 =μ 2 -1, but various aspects of the present embodiment 1 =μ 2 Not limited to the condition -1.

[0042] The component carrier 300 is a band having a predetermined width in the frequency domain.

[0043] The point 3000 is an identifier for identifying a certain subcarrier. The point 3000 is also called point A. The common resource block (CRB) set 3100 is a set of subcarrier spacings μ1 is a set of common resource blocks for

[0044] In the common resource block set 3100, the common resource block including the point 3000 (a black block in the common resource block set 3100 in FIG. 3) is also called the reference point of the common resource block set 3100. The reference point of the common resource block set 3100 may be the common resource block with index 0 in the common resource block set 3100.

[0045] The offset 3011 is an 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.

[0046] The offset 3013 is the distance from the reference point of the resource grid 3001 to the reference point (N start,μ BWP,i1 )

[0047] The common resource block set 3200 is a set of subcarrier spacing μ 2 is a set of common resource blocks for

[0048] In the common resource block set 3200, the common resource block including the point 3000 (a 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.

[0049] The offset 3012 is an 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 determined by the subcarrier spacing μ 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.

[0050] 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 )

[0051] 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 It contains N subcarriers. subframe,μ symb Contains OFDM symbols. Within the grid, subcarrier index k sc and OFDM symbol index l sym The resource specified by is also called a resource element (RE).

[0052] A resource block (RB) is N RB sc Contains consecutive subcarriers The resource blocks are the common resource block, the physical resource block (PRB) and the virtual resource block (VRB). Here, N RB sc =12.

[0053] 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.

[0054] The common resource blocks for a given subcarrier spacing setting μ are indexed in a given common resource block set in the frequency domain starting from 0 in ascending order. 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 A subcarrier with a center frequency of 0 is a subcarrier having the same center frequency as the subcarrier corresponding to point 3000.

[0055] The physical resource block for a certain subcarrier spacing setting μ is given as follows for a certain BWP: The indexes are assigned in ascending order starting from 0 in the frequency domain. The index n of the physical resource block for a certain subcarrier spacing setting μ μ PRB is n μ CRB =n μ PRB +N start,μBWP,i Here, N start,μ BWP,i denotes the reference point of the BWP with index i.

[0056] A BWP is defined as a subset of common resource blocks contained in a resource grid. The BWP is set at the reference point N of the BWP. start,μ BWP,i Starting with N size,μ BWP,i Common lithography The BWP configured for the downlink carrier is also called downlink BWP. The BWP configured for the uplink component carrier is also called uplink BWP.

[0057] An antenna port is 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, the channel may correspond to a physical channel, and the symbol may correspond to an OFDM symbol, and the symbol may correspond to a resource block unit, and the symbol may correspond to a resource element.

[0058] When the large scale properties of a channel through which a symbol is transmitted at one antenna port can be estimated from the channel through which a symbol is 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 antenna port and the second antenna port being QCL with respect to beam parameters may mean that a receiving beam assumed by the receiving side for the first antenna port is the same (or corresponds) as a receiving beam assumed by the receiving side for the second antenna port. The first antenna port and the second antenna port being QCLs in terms of beam parameters may mean that a transmission beam assumed by the receiving side for the first antenna port and a 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.

[0059] Carrier aggregation is the process of aggregating multiple serving The carrier aggregation may be a communication using a cell. Also, the carrier aggregation may be a communication using a plurality of aggregated component carriers. Also, the carrier aggregation may be a communication using a plurality of aggregated downlink component carriers. Also, the carrier aggregation may be a communication using a plurality of aggregated uplink component carriers.

[0060] Fig. 5 is a schematic block diagram showing a configuration example of a base station device 3 according to one aspect of the present embodiment. As shown in Fig. 5, the base station device 3 includes at least a radio transmission / reception unit (physical layer processing unit) 30 and / or a part or all of a higher layer processing unit 34. The radio transmission / reception unit 30 includes at least an antenna unit 31, an RF (Radio Frequency) unit 32, and a 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 a part or all of a radio resource control (RRC) layer processing unit 36.

[0061] The wireless transceiver 30 includes at least a wireless transmitter 30a and a part or all of a wireless receiver 30b. Here, the device configurations of the baseband unit included in the wireless transmitter 30a and the baseband unit included in the wireless receiver 30b may be the same or different. Furthermore, the device configurations of the RF unit included in the wireless transmitter 30a and the RF unit included in the wireless receiver 30b may be the same or different. Furthermore, the device configurations of the antenna unit included in the wireless transmitter 30a and the antenna unit included in the wireless receiver 30b may be the same or different.

[0062] For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a PDSCH. For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a PDCCH. For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a PBCH. For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a synchronization signal. For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a PDSCH DMRS. For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a PDCCH DMRS. For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a CSI-RS. For example, the wireless transmitting unit 30a may generate and transmit a baseband signal of a DL PTRS.

[0063] For example, the wireless receiving unit 30b may receive a PRACH. For example, the wireless receiving unit 30b may receive and demodulate a PUCCH. The wireless receiving unit 30b may receive and demodulate a PUSCH. For example, the wireless receiving unit 30b may receive a PUCCH DMRS. For example, the wireless receiving unit 30b may receive a PUSCH DMRS. For example, the wireless receiving unit 30b may receive a UL PTRS. For example, the wireless receiving unit 30b may receive an SRS.

[0064] 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 of a Medium Access Control (MAC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and an RRC layer.

[0065] The medium access control layer processing unit 35 included in the upper layer processing unit 34 performs processing of the MAC layer.

[0066] The radio resource control layer processing unit 36 ​​included in the upper layer processing unit 34 performs processing for the RRC layer. The wired resource control layer processing unit 36 ​​processes various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 36 ​​manages the RRC message received from the terminal device 1. Set the parameters based on the message.

[0067] The radio transceiver unit 30 (or the radio transmitter unit 30a) performs processes such as modulation and encoding. The radio transceiver 30 (or the radio transmitter 30a) modulates, encodes, and transmits downlink data. The radio transmission / reception unit 30 (or the radio transmission unit 30a) generates a physical signal by generating a baseband signal (converting it into a time-continuous signal) and transmits it to the terminal device 1. Alternatively, the signal may be arranged on a component carrier corresponding to the signal and transmitted to the terminal device 1.

[0068] The wireless transceiver unit 30 (or the wireless receiver unit 30b) performs processes such as demodulation and decoding. The wireless transceiver 30 (or the wireless receiver 30b) separates, demodulates, and The radio transmitting / receiving unit 30 (or the radio receiving unit 30b) may perform a channel access procedure prior to transmitting a physical signal.

[0069] 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.

[0070] The baseband unit 33 receives the analog signal from the RF unit 32. The baseband unit 33 converts the converted digital signal into a digital signal. The baseband unit 33 removes a portion corresponding to a CP (Cyclic Prefix) from the converted digital signal, and performs the following on the signal from which the CP has been removed: A Fast Fourier Transform (FFT) is performed to extract the frequency domain signal.

[0071] The baseband unit 33 performs an inverse fast Fourier transform (IFFT) on the data to generate an OFDM symbol, adds a CP to the generated OFDM symbol, generates a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 33 outputs the converted analog signal to the RF unit 32.

[0072] The RF unit 32 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 33, and up-converts the analog signal to a carrier frequency. The RF unit 32 converts the received signal into a digital signal and transmits it via the antenna unit 31. The RF unit 32 may also have a function of controlling transmission power. The RF unit 32 is also referred to as a transmission power control unit.

[0073] For the terminal device 1, one or more serving cells (or component carriers, downlink component carriers, uplink component carriers) may be configured.

[0074] Each of the serving cells configured for the terminal device 1 is a PCell (Primary cell, The cell may be any one of a Primary Cell, a Primary SCG cell (PSCell), and a Secondary Cell (SCell).

[0075] The PCell is a serving cell included in a Master Cell Group (MCG). The PCell is a cell in which the terminal device 1 performs an initial connection establishment procedure or a connection re-establishment procedure. (cells where the treatment was performed).

[0076] A PSCell is a serving cell included in a Secondary Cell Group (SCG). , which is the serving cell to which random access is performed by terminal device 1.

[0077] The SCell may be included in either the MCG or the SCG.

[0078] The term "serving cell group" (cell group) refers to at least the MCG and the SCG. The serving cell group may include one or more serving cells (or component carriers). The one or more serving cells (or component carriers) included in the serving cell group may be operated by carrier aggregation.

[0079] One or more downlink BWPs may be configured for each serving cell (or downlink component carrier). One or more uplink BWPs are configured for each component carrier. This is also fine.

[0080] Of one or more downlink BWPs configured for a serving cell (or a downlink component carrier), one downlink BWP is set as an active downlink BWP. may be configured (or one downlink BWP may be activated). Of one or more uplink BWPs configured for a serving cell (or uplink component carrier), one uplink BWP is set as the active uplink BWP. (or one uplink BWP may be activated).

[0081] The PDSCH, the PDCCH, and the CSI-RS may be received in an active downlink BWP. The terminal device 1 may attempt to receive the PDSCH, the PDCCH, and the CSI-RS in an active downlink BWP. The PUCCH and the PUSCH are transmitted in an active uplink BWP. The terminal device 1 may transmit PUCCH and PUSCH in the active uplink BWP. The active downlink BWP and the active uplink BWP are also collectively referred to as active BWP.

[0082] PDSCH, PDCCH, and CSI-RS are transmitted in downlink BWPs other than the active downlink BWP ( The terminal device 1 may not receive the signal in the active downlink BWP. In a downlink BWP that is not an active downlink BWP, the reception of PDSCH, PDCCH, and CSI-RS is PUCCH and PUSCH are not active uplink BWPs and therefore do not need to attempt transmission. The terminal device 1 does not need to transmit the PUCCH and the PUSCH in an uplink BWP that is not an active uplink BWP. Inactive BWPs are collectively referred to as inactive BWPs.

[0083] A downlink BWP switch is a process of switching one active UE in a serving cell. Deactivate the downlink BWP and the in-band of the serving cell. This is a procedure to activate one of the active downlink BWPs. Downlink BWP switching may be controlled by the BWP field included in the downlink control information. Downlink BWP switching may also be controlled based on higher layer parameters. good.

[0084] The uplink BWP switching is used to deactivate one active uplink BWP and activate any inactive uplink BWP other than the one active uplink BWP. The uplink BWP switching may be controlled by a BWP field included in the downlink control information. The uplink BWP switching may be controlled based on higher layer parameters.

[0085] Of one or more downlink BWPs configured for a serving cell, two or more The downlink BWP does not have to be set as the active downlink BWP. For a serving cell, one downlink BWP may be active at a given time.

[0086] Of one or more uplink BWPs configured for a serving cell, two or more An uplink BWP does not have to be set as an active uplink BWP. For a serving cell, one uplink BWP may be active at a given time.

[0087] Fig. 6 is a schematic block diagram showing a configuration example 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.

[0088] The wireless transceiver 10 includes at least a wireless transmitter 10a and a part or whole of a wireless receiver 10b. The device configuration of the baseband unit 13 included in 10b may be the same or different. The RF unit 12 included in the wireless transmission unit 10a and the RF unit 12 included in the wireless reception unit 10b may have the same configuration or may have different configurations. The antenna unit 11 and the antenna unit 11 included in the wireless receiving unit 10b have the same device configuration. may be different.

[0089] For example, the radio transmission unit 10a may generate and transmit a baseband signal of a PRACH. For example, the radio transmission unit 10a may generate and transmit a baseband signal of a PUCCH. For example, the radio transmission unit 10a may generate and transmit a baseband signal of a PUSCH. For example, the radio transmission unit 10a may generate and transmit a baseband signal of a PUCCH DMRS. For example, the radio transmission unit 10a may generate and transmit a baseband signal of a PUSCH DMRS. For example, the radio transmission unit 10a may generate and transmit a baseband signal of a UL PTRS. For example, the radio transmission unit 10a may generate and transmit a baseband signal of a UL PTRS. The receiving unit 10a may generate and transmit a baseband signal of the SRS. Generating the signal may include generating an SRS sequence.

[0090] 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.

[0091] 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 of the MAC layer, the packet data integration protocol layer, the radio link control layer, and the RRC layer.

[0092] The medium access control layer processing unit 15 included in the upper layer processing unit 14 performs processing of the MAC layer.

[0093] The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing of the RRC layer. The wired resource control layer processing unit 16 processes various setting information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 16 manages the RRC message received from the base station device 3. Set RRC parameters based on the message.

[0094] The radio transmission / reception unit 10 (or the radio transmission unit 10a) performs processes such as modulation and encoding. The radio transceiver 10 (or the radio transmitter 10a) modulates, encodes, and transmits uplink data. The radio transmission / reception unit 10 (or the radio transmission unit 10a) generates a physical signal by generating a baseband signal (converting it into a time-continuous signal) and transmits it to the base station device 3. Alternatively, the signal may be arranged in a certain BWP (active uplink BWP) and transmitted to the base station device 3.

[0095] The wireless transmitting / receiving unit 10 (or the wireless receiving unit 10b) performs processes such as demodulation and decoding. The radio transmission / reception unit 10 (or the radio reception unit 30b) may receive a physical signal in a certain BWP (active downlink BWP) of a certain serving cell. The wireless receiving unit 10b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information as The upper layer processing unit 14 outputs the physical signal to the wireless transmission / reception unit 10 (wireless reception unit 10b). A channel access procedure may be performed prior to the

[0096] 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 digital signal processing unit 12 outputs the processed analog signal to the baseband unit 13 .

[0097] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 extracts a cyclic prefix (CP) from the converted digital signal. The signal from which the CP has been removed is subjected to a Fast Fourier Transform (FFT) to extract the signal in the frequency domain.

[0098] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the uplink data to generate an OFDM symbol, and adds a CP to the generated OFDM symbol. The baseband unit 13 generates a baseband digital signal and converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0099] The RF unit 12 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 13, and up-converts the analog signal to a carrier frequency. The RF unit 12 converts the received signal into a digital signal and transmits it via the antenna unit 11. The RF unit 12 may also have a function of controlling transmission power. The RF unit 12 is also referred to as a transmission power control unit.

[0100] The physical signals (signals) will be explained below.

[0101] The physical signal is a general term for the downlink physical channel, the downlink physical signal, the uplink physical channel, and the uplink physical channel. The physical channel is a general term for the downlink physical channel and the uplink physical channel. The physical signal is a general term for the downlink physical signal and the uplink physical signal.

[0102] The uplink physical channel may correspond to a set of resource elements that convey information generated in a higher layer. The uplink physical channel may be a physical channel used in an uplink component carrier. The uplink physical channel may be transmitted by a terminal device 1. The uplink physical channel may be received by a base station device 3. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical channels may be used. ·PUCCH (Physical Uplink Control CHannel) ·PUSCH (Physical Uplink Shared CHannel) ·PRACH(Physical Random Access CHannel)

[0103] The PUCCH is used to transmit uplink control information (UCI). The PUCCH may be used. The PUCCH may be transmitted to deliver (deliver, transmit, convey) uplink control information. The uplink control information may be mapped to the PUCCH. The terminal device 1 may transmit the PUCCH in which the uplink control information is mapped. The base station device 3 may receive the PUCCH in which the uplink control information is mapped.

[0104] Uplink control information (uplink control information bit, uplink control information sequence, uplink control information type) is channel state information (CSI), schedule The SR includes at least a part or all of the Scheduling Request (SR) and Hybrid Automatic Repeat request ACKnowledgement (HARQ-ACK) information.

[0105] 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.

[0106] The HARQ-ACK information may include at least a HARQ-ACK corresponding to a transport block (TB). The HARQ-ACK may indicate an acknowledgement (ACK) or a negative-acknowledgement (NACK) corresponding to the transport block. The ACK may indicate that the decoding of the transport block has been successfully completed. The NACK may indicate that the 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.

[0107] A transport block is a sequence of information bits delivered from higher layers. Here, the sequence of information bits is also called a bit sequence. Here, the transport block may be delivered via an UpLink-Shared CHannel (UL-SCH) in the transport layer.

[0108] In some cases, the HARQ-ACK for a transport block is referred to as the HARQ-ACK for a PDSCH. In this case, the HARQ-ACK for the PDSCH is sent via the transport Indicates the HARQ-ACK for the block.

[0109] The HARQ-ACK may indicate an ACK or NACK corresponding to one Code Block Group (CBG) included in the transport block.

[0110] A scheduling request is a request to retrieve the UL-SCH for a new transmission. The scheduling request bit may be used at least to request a UL-SCH for initial transmission by the terminal device 1. The scheduling request bit may be used to indicate either a positive SR or a negative SR. The scheduling request bit indicating a positive SR is also referred to as "a positive SR is conveyed." A positive SR indicates that the terminal device 1 is to transmit a UL-SCH for initial transmission. A positive SR may indicate that UL-SCH resources are requested for initial transmission. A positive SR may indicate that a scheduling request is triggered by a higher layer. A positive SR may be conveyed when a scheduling request is indicated by a higher layer. The scheduling request bit indicating a negative SR is also referred to as "a negative SR is transmitted". A negative SR may indicate that no UL-SCH resources are requested by the terminal device 1 for initial transmission. A positive SR may indicate that no scheduling request is triggered by higher layers. A negative SR may be conveyed when no scheduling request is indicated by higher layers.

[0111] 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 index related to the quality of a propagation path (e.g., propagation strength) or the quality of a physical channel, and the PMI is an index related to a precoder. The RI is an index related to a transmission rank (or the number of transmission layers).

[0112] The channel state information is an indicator of the reception state of at least the physical signal (e.g., CSI-RS) used for channel measurement. The value of the channel state information is The channel measurement may be determined by the terminal device 1 based on the reception conditions assumed by at least the physical signals used for the channel measurement. The channel measurement may include an interference measurement.

[0113] 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 to a certain information format.

[0114] The PUSCH carries transport blocks and / or uplink control information. The transport block may be placed in the PUSCH. The transport block delivered by the UL-SCH may be arranged in the PUSCH. The uplink control information may be arranged in the PUSCH. Alternatively, the PUSCH may include either or both of the uplink control information and the uplink control information. The base station device 3 may receive a PUSCH in which one or both of a transport block and uplink control information are mapped.

[0115] The PRACH may be transmitted to convey a random access preamble. The base station device 1 may transmit the PRACH. The base station device 3 may receive the PRACH. column x u,v (n) is x u,v (n)=x u (mod(n+C v ,L RA ) where x u is a ZC (Zadoff Chu) sequence. Also, x u x u =exp(-jπui(i+1) / L RA ) by may be defined as follows: j is the imaginary unit, and π is the ratio of the circumference of a circle to its circumference. v corresponds to the cyclic shift of the PRACH sequence. RA corresponds to the length of the PRACH sequence. RA is 839 or 139. Also, i ranges from 0 to L RA -1 and u is the sequence index for the PRACH sequence.

[0116] For each PRACH opportunity, 64 random access preambles are defined. The access preamble is the cyclic shift C of the PRACH sequence. v, and the sequence index u for the PRACH sequence. An index may be assigned to each of the bulls.

[0117] The uplink physical signal may correspond to a set of resource elements. The uplink physical signal may not be used to transmit information generated in a higher layer. In addition, the uplink physical signal may be used to transmit information generated in a physical layer. The uplink physical signal may be a physical signal used in an uplink component carrier. The terminal device 1 may transmit the uplink physical signal. The base station device 3 may receive the uplink physical signal. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical signals may be used. ·UL DMRS(UpLink Demodulation Reference Signal) ·SRS(Sounding Reference Signal) ·UL PTRS(UpLink Phase Tracking Reference Signal)

[0118] UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0119] A set of antenna ports of a DMRS for a PUSCH (a DMRS related to a PUSCH, a DMRS included in a PUSCH, a DMRS corresponding to a PUSCH) may be given based on a set of antenna ports for the PUSCH. For example, the set of antenna ports of a DMRS for a PUSCH may be the same as the set of antenna ports for the PUSCH.

[0120] The transmission of the PUSCH and the transmission of the DMRS for the PUSCH are indicated by one DCI format. The PUSCH and the DMRS for the PUSCH may be collectively referred to as a PUSCH. Transmitting the PUSCH may be transmitting the PUSCH and the DMRS for the PUSCH.

[0121] The propagation path of the PUSCH may be estimated from the DMRS for the PUSCH.

[0122] 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.

[0123] The transmission of the PUCCH and the transmission of the DMRS for the PUCCH are indicated by one DCI format. Mapping of PUCCH to resource elements (resource element mapping), and to the resource element of the DMRS for the PUCCH One or both of the mappings may be provided by one PUCCH format. The PUCCH and the DMRS for the PUCCH may be collectively referred to as a PUCCH. Transmitting a PUCCH may be transmitting a PUCCH and a DMRS for the PUCCH.

[0124] The propagation path of the PUCCH may be estimated from the DMRS for the PUCCH.

[0125] The downlink physical channel may correspond to a set of resource elements that convey information generated in a higher layer. The downlink physical channel may be a physical channel used in a downlink component carrier. The base station device 3 may transmit the downlink physical channel. The terminal device 1 may receive the downlink physical channel. In a wireless communication system according to one aspect of 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)

[0126] 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 arranged in a Broadcast Control CHannel (BCCH), which is a logical channel of the MAC layer. The BCCH is arranged in a BCH, which is a channel of the transport layer. The BCH may be arranged (mapped) in the PBCH. The terminal device 1 may receive the PBCH in which the MIB and one or both of the physical layer control information are arranged. The base station device 3 may transmit the PBCH in which the MIB and one or both of the physical layer control information are arranged.

[0127] For example, the physical layer control information may be configured with 8 bits. The physical layer control information may include at least some or all of the following 0A to 0D. 0A) Radio frame bit 0B) Half radio frame (half system frame, half frame) bit 0C) SS / PBCH block index bit 0D) Subcarrier offset bit

[0128] 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 at least to identify radio frames with index 0 to index 1023.

[0129] 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, the half radio frame may be configured to include five subframes. Alternatively, the half radio frame may be configured to include the first five subframes of the ten subframes included in the radio frame. Alternatively, the half radio frame may be configured to include the last five subframes of the ten subframes included in the radio frame.

[0130] The SS / PBCH block index bits are used to indicate an SS / PBCH block index. The SS / PBCH block index bits include 3 bits. The SS / PBCH block index bits may be composed of 3 bits of a 6-bit SS / PBCH block index indicator. The SS / PBCH block index indicator may be used at least to identify SS / PBCH blocks from index 0 to index 63.

[0131] The subcarrier offset bit is used to indicate a subcarrier offset, which may be used to indicate the difference between the first subcarrier to which the PBCH is mapped and the first subcarrier to which the control resource set with index 0 is mapped.

[0132] The PDCCH may be transmitted to transmit Downlink Control Information (DCI). The DCI may be mapped to the PDCCH. The base station device 3 may receive the PDCCH in which the downlink control information is arranged. A PDCCH in which downlink control information is arranged may be transmitted.

[0133] The downlink control information may be transmitted with a DCI format. The DCI format may be interpreted as a format of the downlink control information. The DCI format may be It may also be interpreted as a set of downlink control information set in a certain downlink control information format.

[0134] DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats. The downlink DCI format is a general term for 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.

[0135] DCI format 0_0 is used at least for scheduling PUSCHs in a cell. DCI format 0_0 is used for some of the fields from 1A to 1E or It consists of at least all of the above. 1A) Identifier field for DCI formats 1B) Frequency domain resource assignment field 1C) Time domain resource assignment field 1D) Frequency hopping flag field 1E) MCS field (Modulation and Coding Scheme field)

[0136] The DCI format specific field is a DCI format that includes the DCI format specific field. The DCI format specification field may indicate whether the format is an uplink DCI format or a downlink DCI format. That is, the DCI format specification field may be included in each of the uplink DCI format and the downlink DCI format. Here, the DCI format specification field included in the DCI format 0_0 may indicate 0.

[0137] 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.

[0138] 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.

[0139] The frequency hopping flag field indicates whether frequency hopping is applied to the PUSCH. It may be used to indicate whether or not

[0140] The MCS field included in DCI format 0_0 specifies the modulation scheme for PUSCH, and , and the target coding rate for the transport block placed on the PUSCH. The size of a transport block (TBS) allocated to the PUSCH may be determined based on one or both of a target coding rate and a modulation scheme for the PUSCH.

[0141] DCI format 0_0 does not include fields used for CSI requests. It's not necessary.

[0142] 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 the DCI format 0_0 is allocated belongs uses the DCI format 0_0. The cell is the same as the serving cell of the uplink component carrier on which the PDCCH including the The terminal device 1 may detect the DCI format 0_0 in a downlink component carrier of a serving cell, and may transmit a PUSCH scheduled in accordance with the DCI format 0_0 to an uplink component carrier of the serving cell. It may be recognized that the carrier may be placed in the carrier.

[0143] DCI format 0_0 may not include the BWP field. The DCI format 0_0 may be a DCI format for scheduling a PUSCH without changing an 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 0_0 used for scheduling the PUSCH.

[0144] DCI format 0_1 ​​is used at least for scheduling PUSCHs in a cell. DCI format 0_1 ​​is used for some of fields 2A to 2H or It consists of at least all of the above. 2A) DCI format specific fields 2B) Frequency domain resource allocation field 2C) Uplink time domain resource allocation field 2D) Frequency hopping flag field 2E) MCS Field 2F) CSI request field 2G) BWP field 2H) Carrier indicator field

[0145] The DCI format specific field included in DCI format 0_1 ​​may indicate 0.

[0146] 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.

[0147] 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.

[0148] The MCS field included in DCI format 0_1 ​​specifies the modulation scheme for PUSCH, and and / or may at least be used to indicate some or all of the target coding rate.

[0149] The BWP field of DCI format 0_1 ​​is the The DCI format 0_1 ​​may be used to indicate an uplink BWP in which a PUSCH to be scheduled is arranged. That is, the DCI format 0_1 ​​may involve a change in an active uplink BWP. The terminal device 1 may recognize an uplink BWP in which a PUSCH is arranged based on detecting the DCI format 0_1 ​​used for scheduling a PUSCH.

[0150] DCI format 0_1, which does not include the BWP field, is used to change 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, which is the DCI format 0_1 ​​used for scheduling the PUSCH and does not include the BWP field.

[0151] DCI format 0_1 ​​includes the BWP field, but terminal device 1 does not include the DCI format If the terminal device 1 does not support the BWP switching function by 0_1, the BWP field may be ignored by the terminal device 1. In other words, a terminal device 1 that does not support the BWP switching function , DCI format 0_1 ​​used for PUSCH scheduling and BWP format Based on detecting the DCI format 0_1 ​​including the field, the terminal device 1 may recognize that it transmits the PUSCH without switching the active uplink BWP. If the terminal device 1 supports the BWP switching function, it may report that "the terminal device 1 supports the BWP switching function" in the RRC layer capability information reporting procedure.

[0152] The CSI request field is used to indicate the reporting of CSI.

[0153] If the DCI format 0_1 ​​includes a carrier indicator field, The rear indicator field is the uplink component carrier in which the PUSCH is placed. The DCI format 0_1 ​​may be used to indicate a carrier indicator. If the field is not included, the uplink component carrier on which the PUSCH is located is A PDCCH including DCI format 0_1 ​​used for scheduling the PUSCH is arranged. The uplink component carrier may be the same as the uplink component carrier of a serving cell group. When the number of uplink component carriers configured in the terminal device 1 in a serving cell group is two or more (when uplink carrier aggregation is operated in a serving cell group), the scheduling of the PUSCH arranged in the serving cell group is performed. The carrier indicator field included in the DCI format 0_1 ​​used for The number of bits may be 1 bit or more (for example, 3 bits). When the number of uplink component carriers configured in the terminal device 1 in a certain serving cell group is 1 (when uplink carrier aggregation is not operated in a certain serving cell group), the scheduling of the PUSCH arranged in the certain serving cell group may be set to 1 bit or more (for example, 3 bits). Carrier indicator field included in DCI format 0_1 ​​used for may be 0 (or the carrier indicator field may not be included in DCI format 0_1 ​​used for scheduling the PUSCH arranged in the certain serving cell group).

[0154] DCI format 1_0 is used at least for scheduling of PDSCHs allocated to a certain cell. DCI format 1_0 includes at least some or all of 3A to 3F. It also includes the following: 3A) DCI format specific fields 3B) Frequency domain resource allocation field 3C) Time Domain Resource Allocation Field 3D) MCS field 3E) PDSCH_HARQ feedback timing indicator field 3F) PUCCH resource indicator field

[0155] The DCI format specific field included in DCI format 1_0 may indicate 1.

[0156] 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.

[0157] 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.

[0158] The MCS field included in DCI format 1_0 specifies the modulation scheme for PDSCH, and , and the target coding rate for the transport block placed in the PDSCH. The size of a transport block (TBS) allocated to the PDSCH may be determined based on one or both of a target coding rate and a modulation scheme for the PDSCH.

[0159] The PDSCH_HARQ feedback timing indication field specifies the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH. It may also be used to indicate

[0160] 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.

[0161] DCI format 1_0 may not include a carrier indicator field. In other words, the downlink where the PDSCH scheduled by DCI format 1_0 is placed The link component carrier may be the same as the downlink component carrier in which the PDCCH including the DCI format 1_0 is arranged. Based on detecting the DCI format 1_0 in a certain downlink component carrier, the terminal device 1 may assign a PDSCH scheduled by the DCI format 1_0 to the downlink component carrier. It may be recognized that the carrier may be placed in the carrier.

[0162] DCI format 1_0 may not include the BWP field. The DCI format 1_0 may be a DCI format for scheduling the PDSCH without changing the active downlink BWP. The terminal device 1 may recognize that the PDSCH is to be received without switching the active downlink BWP based on detecting the DCI format 1_0 used for scheduling the PDSCH.

[0163] DCI format 1_1 is used at least for scheduling PDSCHs allocated to a certain cell. DCI format 1_1 includes at least some or all of 4A to 4I. It also includes the following: 4A) DCI format specific fields 4B) Frequency domain resource allocation field 4C) Time Domain Resource Allocation Field 4E) MCS Field 4F) PDSCH_HARQ feedback timing indication field 4G) PUCCH resource indication field 4H) BWP Field 4I) Career Indicator Field

[0164] The DCI format specific field included in DCI format 1_1 may indicate 1.

[0165] 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.

[0166] 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.

[0167] The MCS field included in DCI format 1_1 specifies the modulation scheme for PDSCH, and , may be used to indicate at least one or both of the target coding rates.

[0168] 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 a slot including the last OFDM symbol of the PDSCH to a slot including 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 a slot including the last OFDM symbol of the PDSCH to a slot including the first OFDM symbol of the PUCCH may be specified by a higher layer parameter.

[0169] The PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in a PUCCH resource set.

[0170] The BWP field of DCI format 1_1 is the The DCI format 1_1 may be used to indicate the downlink BWP in which the PUSCH to be scheduled is arranged. That is, the DCI format 1_1 may involve a change in the active downlink BWP. The terminal device 1 may recognize the downlink BWP in which the PUSCH is arranged based on detecting the DCI format 1_1 used for scheduling the PDSCH.

[0171] DCI format 1_1, which does not include the BWP field, is used to change the active downlink BWP. The terminal device 1 may recognize that the PDSCH is to be received without switching the active downlink BWP based on detecting the DCI format 1_1 that is used for scheduling the PDSCH and does not include the BWP field.

[0172] DCI format 1_1 includes the BWP field, but terminal device 1 does not include the DCI format If the terminal device 1 does not support the BWP switching function by 1_1, the BWP field may be ignored by the terminal device 1. In other words, the terminal device 1 that does not support the BWP switching function , DCI format 1_1 used for PDSCH scheduling and BWP format Based on detecting the DCI format 1_1 including the field, the terminal device 1 may recognize that it will receive the PDSCH without switching the active downlink BWP. If the terminal device 1 supports the BWP switching function, it may report that "the terminal device 1 supports the BWP switching function" in the RRC layer capability information reporting procedure.

[0173] If DCI format 1_1 includes a carrier indicator field, The rear indicator field is the downlink component carrier on which the PDSCH is located. DCI Format 1_1 may be used to indicate a carrier indicator. If the field is not included, the downlink component carrier on which the PDSCH is arranged is A PDCCH including DCI format 1_1 used for scheduling the PDSCH is arranged. When the number of downlink component carriers configured in the terminal device 1 in a certain serving cell group is two or more (when downlink carrier aggregation is operated in a certain serving cell group), the scheduling of the PDSCH arranged in the certain serving cell group may be the same as the downlink component carrier configured in the certain serving cell group. The carrier indicator field included in the DCI format 1_1 used for The number of bits may be 1 bit or more (for example, 3 bits). When the number of downlink component carriers configured in the terminal device 1 in a certain serving cell group is 1 (when downlink carrier aggregation is not operated in a certain serving cell group), the scheduling of the PDSCH arranged in the certain serving cell group may be Carrier indicator field included in DCI format 1_1 used for may be 0 (or the carrier indicator field may not be included in DCI format 1_1 used for scheduling the PDSCH allocated to the certain serving cell group).

[0174] The PDSCH may be transmitted to transmit a transport block. The PDSCH may be used to transmit a transport block delivered by the DL-SCH. The PDSCH may be used to transmit a transport block. The transport block may be arranged in the PDSCH. A transport block corresponding to the DL-SCH may be arranged in the PDSCH. The base station device 3 may transmit the PDSCH. The terminal device 1 may receive the PDSCH.

[0175] The downlink physical signal may correspond to a set of resource elements. The downlink physical signal may not carry information generated in a higher layer. The downlink physical signal may be a physical signal used in a downlink component carrier. The downlink physical signal may be transmitted by a base station device 3. The downlink physical signal may be transmitted by a terminal device 1. In a wireless communication system according to one aspect of this embodiment, at least some or all of the following downlink physical signals are used: This may also be done. ·Synchronization signal (SS) ·DL DMRS(DownLink DeModulation Reference Signal) ·CSI-RS(Channel State Information-Reference Signal) ·DL PTRS(DownLink Phase Tracking Reference Signal)

[0176] 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 primary synchronization signal (PSS) and a secondary synchronization signal (SSS).

[0177] FIG. 7 is a diagram showing an example of the configuration of an SS / PBCH block according to one embodiment of the present invention. 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 a PSS. Block 720 shows a set of resource elements for SSS. The blocks (blocks 710, 711, 712, and 713) indicate a set of resource elements for the PBCH and a DMRS for the PBCH (DMRS associated with the PBCH, DMRS included in the PBCH, and DMRS corresponding to the PBCH).

[0178] As shown in FIG. 7, the SS / PBCH block includes a PSS, an SSS, and a PBCH. The SS / PBCH block includes four consecutive OFDM symbols. The SS / PBCH block includes 240 subcarriers. The PSS is the 57th to 183rd subcarriers in the first OFDM symbol. The SSS is placed in subcarriers 57 to 183 in the third OFDM symbol. The PBCH is allocated to the 1st subcarrier of the 2nd OFDM symbol. The 1st to 56th subcarriers of the 1st OFDM symbol may be set to zero. The 184th to 240th subcarriers of the 1st OFDM symbol may be set to zero. The 49th to 56th subcarriers of the 3rd OFDM symbol may be set to zero. The 184th to 192nd subcarriers of the 3rd OFDM symbol may be set to zero. The PBCH is allocated to the 1st to 240th subcarriers of the 2nd OFDM symbol, and to subcarriers in which the DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 48th subcarriers of the 3rd OFDM symbol, and to subcarriers in which the DMRS for the PBCH is not allocated. The PBCH is allocated to the 193rd to 240th subcarriers of the 3rd OFDM symbol, and to subcarriers in which the DMRS for the PBCH is not allocated. The PBCH is allocated to the 1st to 240th subcarriers of the 4th OFDM symbol, which are subcarriers in which the DMRS for the PBCH is not allocated.

[0179] The antenna ports for the PSS, SSS, PBCH, and DMRS for the PBCH may be the same.

[0180] The PBCH on which a 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 is included.

[0181] DL DMRS is a general term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.

[0182] A set of antenna ports of DMRS for PDSCH (DMRS related to PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) may be given based on the set of antenna ports for the PDSCH, i.e., the set of antenna ports of DMRS for PDSCH may be the same as the set of antenna ports for the PDSCH.

[0183] The transmission of the PDSCH and the transmission of the DMRS for the PDSCH are indicated by one DCI format. The PDSCH and the DMRS for the PDSCH may be collectively referred to as a PDSCH. Transmitting a PDSCH may be transmitting a PDSCH and a DMRS for the PDSCH.

[0184] The propagation path of a PDSCH may be estimated from the DMRS for that PDSCH. A set of resource elements on which a DMRS symbol is transmitted and the symbol of the DMRS for the PDSCH are transmitted. In a case where a set of resource elements on which a symbol of a PDSCH is transmitted is included in the same Precoding Resource Group (PRG), the PDSCH on which a symbol of the PDSCH is transmitted at an antenna port may be estimated by the DMRS for the PDSCH.

[0185] 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.

[0186] The PDCCH may be estimated from the DMRS for the PDCCH. That is, the propagation path of the PDCCH may be estimated from the DMRS for the PDCCH. a set of resource elements and a resource on which symbols of a DMRS for the PDCCH are transmitted If the same precoder is applied (is assumed to be applied, is assumed to be applied) in a set of elements, the symbols of the PDCCH at a certain antenna port are transmitted. The PDCCH to be transmitted may be estimated by the DMRS for the PDCCH.

[0187] The BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels that define the relationship between a physical layer channel and a MAC layer channel (also called a logical channel).

[0188] The BCH of the transport layer is mapped to the PBCH of the physical layer. The transport blocks on the BCH are delivered to the PBCH of the physical layer. The UL-SCH of the transport layer is mapped to the PUSCH of the physical layer, i.e., the transport block carried by the UL-SCH of the transport layer is delivered to the PUSCH of the physical layer. Also, the DL-SCH of the transport layer is mapped to the PDSCH of the physical layer, i.e., the transport block carried by the DL-SCH of the transport layer is delivered to the PDSCH of the physical layer.

[0189] For each serving cell, one UL-SCH and one DL-SCH may be provided. The BCH may be provided for the PCell. The BCH does not have to be provided for the PSCell or SCell.

[0190] In the MAC layer, hybrid automatic repeat reQuest (HARQ) control is performed for each transport block.

[0191] The BCCH (Broadcast Control CHannel), the CCCH (Common Control CHannel), and the 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 an RRC message common to a plurality of terminal devices 1. Here, the CCCH may be used, for example, for a terminal device 1 that is not RRC-connected. The DCCH (Dedicated Control CHannel) may be used at least for transmitting an RRC message dedicated to the terminal device 1. Here, the DCCH may be used, for example, for a terminal device 1 that is RRC-connected.

[0192] The upper layer parameters common to a plurality of terminal devices 1 are also called common upper layer parameters. Here, the common upper layer parameters are parameters specific to the serving cell. Here, the parameters specific to the serving cell may be defined as parameters common to the terminal devices (e.g., terminal devices 1-A, B, and C) in which the serving cell is set. It may also be a data.

[0193] For example, the common higher layer parameters may be included in the RRC messages delivered on the BCCH. For example, the common upper layer parameters may be included in an RRC message delivered on the DCCH. .

[0194] Among certain upper layer parameters, upper layer parameters different from the common upper layer parameters are also called 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 set. In other words, the dedicated RRC parameters are upper layer parameters that can provide unique settings for each of the terminal devices 1-A, B, and C.

[0195] The BCCH of the logical channel is mapped to the BCH or DL-SCH of the transport layer. For example, a transport block including MIB information is delivered to the BCH of the transport layer. A transport block including system information other than MIB is delivered to the DL-SCH of the transport layer. A CCCH is mapped to the DL-SCH or UL-SCH. That is, a transport block mapped to a CCCH is delivered to the DL-SCH or UL-SCH. A DCCH is mapped to the DL-SCH or UL-SCH. That is, a transport block mapped to a DCCH is delivered to the DL-SCH or UL-SCH.

[0196] 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. The RRC message including a message corresponding to a DCCH is also referred to as an individual RRC message.

[0197] The upper layer parameters are RRC parameters or parameters included in MAC CE (Medium Access Control Control Element). In other words, 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.

[0198] The procedure performed by the terminal device 1 includes at least some or all of the following steps 5A to 5C. 5A) Cell search 5B) Random access 5C) Data communication

[0199] The cell search is a procedure used by the terminal device 1 to synchronize with a certain cell in terms of 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 terms of the time domain and the frequency domain and detect a physical cell ID.

[0200] The sequence of the PSS is based at least on the physical cell ID. The sequence of the SSS is based at least on the physical cell ID.

[0201] The SS / PBCH block candidates indicate resources on which transmission of the SS / PBCH block is permitted (possible, reserved, configured, defined, possible).

[0202] The set of SS / PBCH block candidates in a half radio frame is also called the SS burst set. The SS burst set is a set of candidates for the transmission window. The SS burst set is also called the Discovery Reference Signal transmission window (DRS transmission window), or the Discovery Reference Signal transmission window (DRS 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.

[0203] 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.

[0204] Random access is a procedure that includes at least some or all of message 1, message 2, message 3, and message 4.

[0205] Message 1 is a procedure in which the PRACH is transmitted by the terminal device 1. The terminal device 1 transmit a PRACH in one PRACH opportunity selected from one or more PRACH opportunities based at least on an index of a SS / PBCH block candidate detected based on a cell search; Each PRACH opportunity is defined based on at least time and frequency domain resources. can be.

[0206] The terminal device 1 transmits one random access preamble selected from the PRACH opportunities corresponding to the index of the SS / PBCH block candidate in which the SS / PBCH block is detected. .

[0207] Message 2 is a procedure in which the terminal device 1 attempts to detect DCI format 1_0 with a CRC (Cyclic Redundancy Check) scrambled with RA-RNTI (Random Access - Radio Network Temporary Identifier). The terminal device 1 attempts to detect a PDCCH including the 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 a cell search, and in resources indicated based on the setting of a search space set. Message 2 is also called a random access response.

[0208] Message 3 is contained in DCI format 1_0 detected by the Message 2 procedure. The PUSCH transmission scheduled by the random access response grant is Here, the random access response grant The MAC CE included in the PDSCH scheduled by the DCI format 1_0 indicates the MAC CE.

[0209] The PUSCH scheduled based on the random access response grant is The message 3 PUSCH contains a contention resolution identifier (MAC CE). The contention resolution identifier (MAC CE) is used to identify the contention. Contains the resolution ID.

[0210] Message 3 PUSCH retransmissions are scheduled with DCI format 0_0 with CRC scrambled based on TC-RNTI (Temporary Cell - Radio Network Temporary Identifier).

[0211] Message 4 is C-RNTI (Cell - Radio Network Temporary Identifier) ​​or This is a procedure for attempting to detect DCI format 1_0 with a CRC scrambled based on one of the TC-RNTIs. The terminal device 1 performs scheduling based on the DCI format 1_0. The PDSCH may include a collision resolution ID.

[0212] Data communication is a general term for downlink communication and uplink communication.

[0213] In data communication, the terminal device 1 attempts to detect the PDCCH in resources specified based on the control resource set and the search space set (monitors the PDCCH, detects the PDCCH, monitor).

[0214] A control resource set is a set of resources consisting of a certain number of resource blocks and a certain number of OFDM symbols. In the frequency domain, the control resource set may consist of continuous resources (non-interleaved mapping) or distributed resources. (interleaver mapping).

[0215] A set of resource blocks constituting the control resource set may be indicated by a higher layer parameter. The number of OFDM symbols constituting the control resource set may be indicated by a higher layer parameter.

[0216] The terminal device 1 attempts to detect the PDCCH in the search space set. Attempting to detect a PDCCH in the search space set may be attempting to detect a PDCCH candidate in the search space set, or attempting to detect a DCI format in the search space set. Alternatively, detection of the PDCCH may be attempted in the control resource set. Alternatively, the control resource set may be used to detect PDCCH candidates. , it may be to attempt to detect the DCI format in the control resource set.

[0217] 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 a part 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.

[0218] The Type 0 PDCCH common search space set is used as the common search space set with index 0. The type 0 PDCCH common search space set may include the common search space with index 0. It may be a set.

[0219] 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 dedicated PDCCH search space set.

[0220] A search space set is associated with (contains, corresponds to) a control resource set. The index of the control resource set associated with the search space set may be indicated by a higher layer parameter.

[0221] For a given search region set, some or all of 6A to 6C are at least upper layer parameters. The information may be indicated by data. 6A) PDCCH monitoring periodicity 6B) PDCCH monitoring pattern within a slot 6C) PDCCH monitoring offset

[0222] A monitoring occasion for a certain search area set is defined as a monitoring occasion for the certain search area set. The monitoring opportunity for a search space set may correspond to an OFDM symbol in which a first OFDM symbol of an associated control resource set is located. The monitoring opportunity for a search space set may correspond to a resource of a control resource set starting from a first OFDM symbol of the control resource set associated with the search space set. The monitoring opportunity for the search space set is given based on at least some or all of a PDCCH monitoring interval, a PDCCH monitoring pattern in a slot, and a PDCCH monitoring offset.

[0223] 8 is a diagram showing an example of a monitoring opportunity of the 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.

[0224] 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.

[0225] The monitoring interval of the search area set 91 is set to 1 slot, and the monitoring The offset is set to 0 slot, and the monitoring pattern of the search area set 91 is [1,0 ,0,0,0,0,0,1,0,0,0,0,0,0,0]. The monitoring opportunities for search region set 91 correspond to the first OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each of the slots.

[0226] The monitoring interval of the search area set 92 is set to 2 slots, the monitoring offset of the search area set 92 is set to 0 slots, and the monitoring pattern of the search area set 92 is [1,0 ,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. The monitoring opportunity for search region set 92 corresponds to the first OFDM symbol (OFDM symbol #0) in each of the even slots.

[0227] The monitoring interval of the search area set 93 is set to 2 slots, the monitoring offset of the search area set 93 is set to 0 slots, and the monitoring pattern of the search area set 93 is [0,0 ,0,0,0,0,0,1,0,0,0,0,0,0,0]. The monitoring opportunity for search region set 93 corresponds to the eighth OFDM symbol (OFDM symbol #7) in each of the even slots.

[0228] The monitoring interval of the search area set 94 is set to 2 slots, the monitoring offset of the search area set 94 is set to 1 slot, and the monitoring pattern of the search area set 94 is [1,0 ,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. The monitoring opportunity for search region set 94 corresponds to the first OFDM symbol (OFDM symbol #0) in each odd slot.

[0229] The Type 0 PDCCH common search space set may be used at least for DCI formats with a Cyclic Redundancy Check (CRC) sequence scrambled by a System Information-Radio Network Temporary Identifier (SI-RNTI).

[0230] The Type 0a PDCCH common search space set is the SI-RNTI (System Information-Radio Network Interference CRC (Cyclic Redundancy Check) scrambled by a Temporary Identifier It may be used at least for DCI formats involving sequences.

[0231] 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).

[0232] 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).

[0233] 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).

[0234] The UE dedicated PDCCH search space set may be used at least for DCI formats with CRC sequences scrambled by the C-RNTI.

[0235] In downlink communication, the terminal device 1 detects the downlink DCI format. The detected downlink DCI format is used at least for resource allocation of the PDSCH. The detected downlink DCI format is also called a downlink assignment. The terminal device 1 attempts to receive the PDSCH. Based on the PUCCH resource indicated based on the 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.

[0236] In the uplink communication, the terminal device 1 detects the uplink DCI format. The detected DCI format is used at least for PUSCH resource allocation. The detected uplink DCI format is also called an uplink grant. The terminal device 1 transmits the PUSCH.

[0237] In the configured grant, PUSCH is scheduled. An uplink grant for scheduling is set for each transmission period of the PUSCH. When the PUSCH is scheduled by the uplink DCI format, some or all of the information indicated by the uplink DCI format may be indicated by the uplink grant set in the case of the set scheduling.

[0238] The UL slot may be a slot consisting of UL symbols. The special slot may be a slot consisting of UL symbols, flexible symbols, and DL symbols. The DL slot may be a slot consisting of DL symbols.

[0239] The UL symbol may be an OFDM symbol configured or indicated for the uplink in time division duplex. The UL symbol may be an OFDM symbol configured or indicated for the PUSCH, PUCCH, PRACH, or SRS. The UL symbol may be provided by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The UL symbol may be provided by the higher layer parameter tdd-UL-DL-ConfigurationDedicated. The UL slots may be provided by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The UL slots may be provided by the higher layer parameter tdd-UL-DL-ConfigurationDedicated. It may be provided by

[0240] The DL symbol may be an OFDM symbol configured or indicated for downlink in time division duplex. The DL symbol may be an OFDM symbol configured or indicated for PDSCH or PDCCH. The DL symbol may be provided by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The DL symbol may be provided by the higher layer parameter tdd-UL-DL-ConfigurationDedicated. The DL slot may be provided by the higher layer parameter tdd-UL-DL-ConfigurationCommon. The DL slot may be provided by the higher layer parameter tdd-UL-DL-ConfigurationDedicated.

[0241] The flexible symbol may be an OFDM symbol that is not set or indicated as a UL symbol or DL ​​symbol among the OFDM symbols in a certain period. The certain period may be a period given by the higher layer parameter dl-UL-TransmissionPeriodicity. The flexible symbols may be for PDSCH, PDCCH, PUSCH, PUCCH, or PRACH. It may be an OFDM symbol that is set or indicated.

[0242] The upper layer parameter tdd-UL-DL-ConfigurationCommon may be a parameter for setting a UL slot, a DL slot, or a special slot for each of one or more slots. The upper layer parameter tdd-UL-DL-ConfigurationDedicated may be a parameter for setting a UL symbol, a DL symbol, or a flexible symbol for each of the one or more slots. The tdd-UL-DL-ConfigurationCommon may be a common upper layer parameter. The tdd-UL-DL-ConfigurationDedicated may be a dedicated upper layer parameter.

[0243] PUSCH-Config may be a dedicated higher layer parameter. PUSCH-ConfigCommon may be a common higher layer parameter. PUSCH-Config is configured per BWP for PUSCH transmission. PUSCH-Config may include a plurality of higher layer parameters related to PUSCH transmission. PUSCH-Config may be a UE-specific setting. For example, PUSCH-Config for the terminal device 1A, the terminal device 1B, and the terminal device 1C in one cell, or a plurality of higher layer parameters included in the PUSCH-Config may be different. PUSCH-ConfigCommon may be set for each BWP for PUSCH transmission. PUSCH-ConfigCommon may include a plurality of higher layer parameters related to PUSCH transmission. PUSCH-ConfigCommon may be a cell-specific setting. For example, PUSCH-ConfigCommon for the terminal device 1A, the terminal device 1B, and the terminal device 1C in one cell may be common. For example, PUSCH-ConfigCommon may be given by system information.

[0244] Repeated transmission may be applied to the PUSCH. For example, repeated transmission may be applied to the PUSCH scheduled by the DCI. Repeated transmission may be applied to the PUSCH scheduled by the grant. The PUSCH repetition type is PUSCH repetition type A and PUSCH repetition type B. The PUSCH repetition type is set by higher layer parameters. The PUSCH repetition type may be based on the DCI format. For example, a first PUSCH repetition type for a PUSCH scheduled by DCI format 0_1 ​​may be different from a second PUSCH repetition type for a PUSCH scheduled by DCI format 0_2.

[0245] The number of repetitions for PUSCH repeated transmission may be configured by higher layer parameters. For example, the upper layer parameter numberOfRepetitions is the number of repetitions for PUSCH repetition transmission. The PUSCH repetition number corresponding to the PUSCH repetition type A may be a parameter including the number of repetitions. In the repeat transmission, the number of repetitions for the PUSCH repeat transmission may be determined by the value of the higher layer parameter numberOfRepetitions. In the PUSCH repetition type A, the PUSCH whose transmission is indicated by the DCI format with CRC scrambled by C-RNTI and either MCS-C-RNTI or CS-RNTI may have the number of repetitions equal to numberOfRepetitions if there is numberOfRepetitions in the resource allocation table. When one PUSCH-Time Domain Resource Allocation includes one or more PUSCH-Allocations, the higher layer parameter numberOfRepetitions may be set for each PUSCH-Allocation. Also, the PUSCH-Time Domain Resource Allocation may be referred to as a resource allocation table.

[0246] The upper layer parameter pusch-AggregationFactor is the repetition factor for PUSCH repetition transmission. The parameter may indicate the number of PUSCH repetitions corresponding to the PUSCH repetition type A. In transmission, the number of repetitions for the PUSCH repeat transmission may be determined by the value of the higher layer parameter pusch-AggregationFactor. In PUSCH repetition type A, the number of repetitions of the PUSCH, the transmission of which is indicated by the DCI format with C-RNTI and CRC scrambled by either MCS-C-RNTI or CS-RNTI, may be equal to pusch-AggregationFactor if pusch-AggregationFactor is configured. pusch-AggregationFactor may be configured for PUSCH-Config.

[0247] The number of repetitions corresponding to PUSCH repetition type A is the slot for PUSCH repetition transmission. Also, one TB may be repeated in one or more slots. PUSCH repetitions transmitted in different slots may be assigned to the same OFDM symbol. may be applied.

[0248] In the PUSCH repetition transmission corresponding to PUSCH repetition type B, nominal repetition is used. The repetition may be based on actual repetition.

[0249] The frequency hopping scheme may be set by a higher layer parameter. The higher layer parameters frequencyHopping, frequencyHoppingDCI-0-1, and frequencyHoppingDCI-0-2 may be parameters that provide a frequency hopping scheme for PUSCH. For example, a frequency hopping scheme corresponding to the frequency hopping for PUSCH may be set by frequencyHoppingDCI-0-2 in PUSCH-Config. Also, a frequency hopping scheme corresponding to the frequency hopping for PUSCH may be set by frequencyHopping in PUSCH-Config. Also, a frequency hopping scheme corresponding to the frequency hopping for PUSCH transmission set by frequencyHopping in configuredGrantConfig may be set. The frequency hopping scheme may be any of intra-slot frequency hopping, inter-slot frequency hopping, and inter-repetition frequency hopping. Also, the frequency hopping interval corresponding to intra-slot frequency hopping may be within one slot. The frequency hopping interval corresponding to inter-slot frequency hopping may be one slot or multiple slots. The frequency hopping interval corresponding to inter-repetition frequency hopping may be based on nominal repetition.

[0250] For example, the hopping interval may be provided by a higher layer parameter, which may for example be a dedicated higher layer parameter.

[0251] Whether or not to perform frequency hopping may be determined based at least on the DCI. Whether or not to apply frequency hopping for the PUSCH whose transmission is instructed by the DCI format may be determined based at least on a value of a frequency hopping flag field included in the DCI format. Whether or not to apply frequency hopping for the PUSCH whose transmission is instructed by the random access response grant may be determined based at least on a value of a frequency hopping flag field included in the random access response grant. For example, frequency hopping for the PUSCH may be performed based at least on the value of the frequency hopping flag field being 1.

[0252] Intra-slot frequency hopping is applicable for PUSCH transmission in one or more slots. For example, intra-slot frequency hopping may be used for PUSCH repetitive transmission. For PUSCH where intra-slot frequency hopping is applied, 1 or For example, for a PUSCH to which intra-slot frequency hopping is applied, the allocation of resource blocks may be switched every one or more OFDM symbols. The placement may be switched between first hop or second hop. Also, when intra-slot frequency hopping is performed for the PUSCH, the first hop and the second hop may be switched every one or more OFDM symbols. The difference between the position of the first resource block of the first hop and the position of the first resource block of the second hop is RB offset RB offsetmay be set by a higher layer parameter. The one or more OFDM symbols may be within one slot. The one or more OFDM symbols may be half the number of OFDM symbols for the PUSCH in one slot. Intra-slot frequency hopping may be applied to the PUSCH corresponding to PUSCH repetition type A.

[0253] Inter-slot frequency hopping is applied to PUSCH transmission in multiple slots. For PUSCH to which inter-slot frequency hopping is applied, the resource may be allocated per slot. For example, inter-slot frequency hopping may be applied to PUSCH repeated transmission. Also, when inter-slot frequency hopping is performed for PUSCH, the resource block arrangement may be switched between the first hop and the second hop for each slot. For example, in a certain slot, the slot index n μ s,f If n is an even number, the PUSCH transmission in a certain slot may correspond to the first hop. For example, in a certain slot, slot index n μ s,f If , the PUSCH transmission in a slot may correspond to a second hop. Inter-slot frequency hopping is used for PUSCH repetition type A and PUSCH repetition type B. This may be applied to a PUSCH corresponding to either type B.

[0254] Inter-repetition frequency hopping is applied to PUSCH corresponding to PUSCH repetition type B. For PUSCH where frequency hopping between repetitions is applied, the nominal repetition rate may be Based on the return, the first hop and the second hop may be switched.

[0255] At least two transmission schemes may be supported for the PUSCH. For example, codebook-based transmission may be one of the transmission schemes for the PUSCH. For example, non-codebook-based transmission may be one of the transmission schemes for the PUSCH. The higher layer parameters may provide either codebook transmission or non-codebook transmission. For example, if 'codebook' is set for the higher layer parameters, the terminal device 1 may be configured for codebook transmission. For example, if 'nonCodebook' is set for the higher layer parameters, the terminal device 1 may be configured for non-codebook transmission. The higher layer parameters may be txConfig. The higher layer parameters may be usage. For example, if the higher layer parameters are not set, the terminal device 1 may not expect to be scheduled by either DCI format 0_1 ​​or DCI format 0_2. If the PUSCH is scheduled by DCI format 0_0, the transmission of the PUSCH may be based on at least one antenna port.

[0256] In the codebook transmission, the PUSCH may be scheduled by a DCI format. The DCI format may be any of DCI format 0_0, DCI format 0_1, and DCI format 0_2. In the codebook transmission, the PUSCH may be set to be transmitted semi-statically. The terminal device 1 may determine one or more precoders for the PUSCH transmission. For example, the precoder may be determined based on at least some or all of an SRS resource indicator (SRI), a Transmitted Precoding Matrix Indicator (TPMI), and a transmission rank (Transmission rank, or rank). For example, the SRI may be provided by a DCI field of an SRS resource indicator of 1 or 2. For example, the TPMI may be provided by a DCI field of precoding information of 1 or 2. For example, the transmission rank may be provided by a DCI field of a layer number (transmission layer number). The SRI may be provided by a first higher layer parameter. The TPMI and transmission rank may be provided by a second higher layer parameter. The first higher layer parameter may be srs-ResourceIndicator or srs-ResourceIndicator2. The second higher layer parameter may be precodingAndNumberOfLayers or precodingAndNumberOfLayers2.

[0257] The SRS resource set applied to the PUSCH may be determined based on higher layer parameters. The PUSCH is scheduled according to DCI format 0_1 ​​or DCI format 0_2. The higher layer parameter may be srs-ResourceSetToAddModList or srs-ResourceSetToAddModeListDCI-0-2. The higher layer parameter may be a higher layer parameter configured in SRS-Config.

[0258] If the upper layer parameter usage is set to 'codebook', one or two SRS resource sets are specified in srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2. The upper layer parameter usage may be set in the upper layer parameter SRS-ResourceSet.

[0259] When one SRS resource set is configured, SRI and TPMI may be given by the DCI field. TPMI may be used to indicate a precoder. The precoder is a set of v The SRS resource may be applied across layers. When multiple SRS resources are configured, one SRS resource may be selected by the SRI. A transmit precoder (precoder) may be selected from a codebook (uplink codebook). For example, the codebook may include the number of antenna ports. The number of antenna ports is determined by the higher layer parameters nrofSRS-Ports and If 'codebook' is set in the upper layer parameter txConfig, at least one SRS resource may be configured in the terminal device 1. The SRI to be specified is determined by the SRI. The SRS resource may be associated with the transmission of the SRS resource specified by the SRS resource.

[0260] If two SRS resource sets are configured, one or two SRIs and one or two TPMIs For example, the DCI field may be an SRS resource indicator. The terminal device 1 may apply the indicated SRI and TPMI to one or more PUSCH repetitions. The TPMI may be a precoding information field based on a code point of the SRS resource set indication, or a DCI field of precoding information and number of layers. The precoder may be used to indicate a precoder. The precoder may be applied to the 0th to v-1th layers. The precoder may correspond to an SRS resource selected by the SRI. Multiple SRS resources may be configured for the applicable SRS resource set. In one or two TPMIs, the transmission precoder (precoder) may be selected from a codebook (uplink codebook). When two SRIs are indicated, the terminal device 1 may expect that the number of antenna ports for the two indicated SRS resources is the same. The number of antenna ports may be provided by a higher layer parameter.

[0261] In the codebook transmission, the terminal device 1 may determine a codebook subset. For example, the codebook subset may be determined based at least on the TPMI. The codebook subset may be determined in response to receipt of certain higher layer parameters. The certain higher layer parameters may be codebookSubset or codebookSubsetDCI-0-2. Certain higher layer parameters may be set to 'fullyAndPartialAndNonCoherent', 'partialAndNonCoherent', or 'nonCoherent'. For example, if at least certain higher layer parameters are set to 'partialAndNonCoherent', then the codebook subset associated with a 2-port SRS resource (SRS resource with 2 ports) may be 'nonCoherent'. For example, the codebook may include at least one SRS resource with 4 ports and at least one SRS resource with 2 ports.

[0262] The terminal device 1 may report a UE capability. When the terminal device 1 reports a UE capability of 'partialAndNonCoherent' transmission, the terminal device 1 may not expect a codebook subset having 'fullyAndPartialAndNonCoherent' to be configured.

[0263] When the terminal device 1 reports a UE capability of 'nonCoherent' transmission, the terminal device 1 may not expect a codebook subset with 'fullyAndPartialAndNonCoherent' or 'partialAndNonCoherent' to be configured.

[0264] If the number of antenna ports indicates that the maximum number of SRS antenna ports to be configured is 2, the terminal device 1 may not expect that a higher layer parameter to which 'partialAndNonCoherent' is set is configured. The higher layer parameter may be codebookSubset or codebookSubsetForDCI-Format0-2. The number of antenna ports may be determined by the higher layer parameter nrofSRS-Ports.

[0265] In codebook transmission, one SRS resource may be determined based on the SRI from the SRS resource set, except when the first higher layer parameter is set to 'fullpowerMode2'. In this case, the maximum number of SRS resources configured for codebook transmission may be 2. The higher layer parameter of the DCI may be ul-FullPowerTransmission. The DCI may indicate the transmission of SRS resources. For example, if aperiodic SRS is configured, the DCI may indicate The SRS request field in the SRS request may indicate the transmission of aperiodic SRS resources. The terminal device 1 may not expect the first higher layer parameter to be set to 'fullpowerMode1' and the second higher layer parameter to be set to 'fullAndPartialAndNonCoherent'.

[0266] The terminal device 1 transmits the SRS link indicated by the DCI format or the higher layer parameters. Use the same antenna port or ports as the SRS port or ports at the source. For example, the SRS port may be an antenna port for PUSCH transmission. The DMRS antenna ports may be determined according to the ordering of the DMRS ports.

[0267] When multiple SRS resources are configured by an SRS resource set, the terminal device 1 The higher layer parameter nrofSRS-Ports may be expected to be set with the same value for all SRS resources from the SRS resource set. It may be a higher layer parameter SRS-ResourceSet with meter usage.

[0268] If 'fullpowerMode2' is set for the upper layer parameters, one or more SRS resources with the same or different SRS port numbers may be configured in one SRS resource set. A maximum of two different spatial relations may be configured for all SRS resources in an SRS resource set if 'fullpowerMode2' is set for the higher layer parameters. A maximum of two or four SRS resources may be configured in an SRS resource set if 'fullpowerMode2' is set for the higher layer parameters. Also, a maximum of eight SRS resources may be configured in an SRS resource set. An SRS resource set may be an SRS resource set with the higher layer parameter usage set to 'codebook'.

[0269] In non-codebook transmission, the PUSCH is DCI format 0_0, DCI format 0_1, or , may be scheduled according to DCI format 0_2. The terminal device 1 may determine the precoder and transmission rank of the PUSCH based on the SRI. For example, when multiple SRS resources are configured, the SRI is given by one or two SRS resource indications in the DCI. For example, the SRI may be given by a higher layer parameter, and the SRS resource set applied to the PUSCH may be defined by an entry in the higher layer parameter. The upper layer parameter may be srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2.

[0270] The terminal device 1 may use one or more SRS resources for SRS transmission. The maximum number of SRS resources in one SRS resource set may be transmitted to the base station device 3 as a UE capability. The SRS resources may be configured for simultaneous transmission in the same OFDM symbol. Multiple SRS resources transmitted simultaneously may occupy the same resource block. One SRS port may be configured for each SRS resource. One or two SRS resource sets may be configured in the upper layer parameter srs-ResourceSetToAddModList with the upper layer parameter usage set to 'nonCodebook' in the upper layer parameter SRS-ResourceSet. If two SRS resource sets are configured, one or two SRIs may be given by the DCI field. The DCI field may be a DCI field of two SRS resource indications.

[0271] The terminal device 1 may apply the indicated SRI to one or more PUSCH repetitions. For example, according to the SRS resource set of the PUSCH repetition, the terminal device 1 may apply the indicated SRI to one or more PUSCH repetitions. Or it may be applied to multiple PUSCH repetitions. The maximum number of SRS resources per SRS resource set that can be used may be four. The maximum number of SRS resources per SRS resource set configured for packet transmission is 8. Each of the one or two SRIs indicated shall be the SRS resource set identified by the SRI. The SRS resource set may relate to the latest transmission of the SRS resource of the SRS resource set. The SRS transmission may be prior to the PDCCH carrying the SRI. The terminal device 1 may not expect that different numbers of SRS resources are configured in the two SRS resource sets.

[0272] Multiple PDCCH candidates (PDCCH candidate(s)) are searched for according to the higher layer parameters. When the search area set is associated with a PDCCH candidate, one PDCCH candidate is used. The upper layer parameter may be a PDCCH candidate that is started earlier among the PDCCH candidates. The upper layer parameter may be searchSpaceLinking.

[0273] For non-codebook transmission, the UE may calculate a precoder. For example, the precoder used for SRS transmission may be calculated based on measurements of the NZP CSI-RS resources. One NZP CSI-RS resource may be configured for one SRS resource set. For example, one SRS resource set may be an SRS resource set with higher layer parameters set to 'nonCodebook'.

[0274] When an aperiodic SRS resource set is configured, the NZP-CSI RS may be indicated via an SRS request field. The SRS request field may be one of the DCI fields in any of DCI format 0_1, DCI format 0_2, DCI format 1_1, and DCI format 1_2. A first upper layer parameter may indicate an association between an aperiodic SRS (aperiodic SRS triggering state) and an SRS resource set. The first upper layer parameter, the triggered SRS resource, srs-ResourceSetId, and csi-RS may be configured in an upper layer parameter SRS-ResourceSet. The upper layer parameter csi-RS may indicate the NZP-CSI-RS-ResourceId. The upper layer parameter SRS-ResourceSet associated with the SRS request may be defined by an entry in a list that is an upper layer parameter. The list, which is an upper layer parameter, may be the upper layer parameter srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2. The terminal device 1 may not be expected to update the precoding information (SRS precoding information). For example, if the gap from the last OFDM symbol of reception of the aperiodic NZP-CSI-RS resource to the first OFDM symbol of the aperiodic SRS transmission is 42 OFDM symbols or less, the terminal device 1 may not be expected to update the precoding information.

[0275] If an aperiodic SRS associated with the aperiodic NZP CSI-RS resource is configured, the presence of CSI-RS may be indicated by the SRS request field. If the value of the SRS request field is not '00' and the scheduling DCI is not used for cross carrier scheduling or cross bandwidth part scheduling, the presence of the CSI-RS may be indicated by the SRS request field.

[0276] The terminal device 1 may perform one-to-one mapping. The one-to-one mapping may be a mapping from the SRI to the DMRS port and the corresponding PUSCH layer. There may be 0 to v-1 PUSCH layers, where v may be the number of layers. The number of layers may be set by a higher layer parameter. The terminal device 1 may transmit the PUSCH using the same antenna port as the SRS port. For example, the SRS ports in the SRS resource indicated by the SRI may be indexed as pi = 1000 + i. For example, the SRS port in the (i + 1)-th SRS resource may be The SRS port in the (i+1)-th SRS resource may be pi. pi may be 1000+i. That is, pi=1000+i. It's fine.

[0277] In non-codebook transmission, the terminal device 1 may not expect that both the spatial relation information (info) for the SRS resource and the higher layer parameter associatedCSI-RS in the higher layer parameter SRS-ResourceSet for the SRS resource set are configured. The spatial relation information may be determined by the higher layer parameter. The spatial relation information may be the higher layer parameter spatialRelationInfo. In non-codebook transmission, when at least one SRS resource is configured in an SRS resource set with the higher layer parameter set to 'nonCodebook', the terminal device 1 may be scheduled by DCI format 0_1 ​​or DCI format 0_2.

[0278] The CQI indicator and its interpretation for reporting the CQI may be indicated based on the modulation scheme.

[0279] The terminal device 1 selects, for each CQI value reported in the uplink slot n based on the time-unlimited observation interval and the frequency-unlimited observation interval, the highest CQI index that satisfies the following condition: The modulation scheme, target coding rate, and transport block number corresponding to the CQI index may be derived. The combination of the block sizes creates a downlink physical resource block called the CSI reference resource. A single PDSCH transport block occupying a block group is However, it may be possible to receive the signal so as not to exceed the rate.

[0280] If the higher layer parameter timeRestrictionForChannelMeasurements is set to "notConfigured", the terminal device 1 may derive channel measurements for calculating the CSI value reported in UL slot n based only on the NZP CSI-RS that is not later than the CSI reference resource associated with the CSI resource configuration.

[0281] If the higher layer parameter timeRestrictionForChannelMeasurements of CSI-ReportConfig is “Configured”, the terminal device 1 may derive channel measurements for CSI calculation to be reported in UL slot n based only on the most recent opportunity of the NZP CSI-RS associated with the CSI resource configuration that is not later than the CSI reference resource.

[0282] The higher layer parameter timeRestrictionForInterferenceMeasurements is "notConfigured ", the terminal device 1 may derive an interference measurement for calculating the CSI value reported in UL slot n based only on the CSI-IM and / or NZP CSI-RS, such that it is not later than the CSI reference resource associated with the CSI resource configuration.

[0283] When the higher layer parameter timeRestrictionForInterferenceMeasurements of CSI-ReportConfig is “Configured”, the terminal device 1 may derive interference measurements for calculating a CSI value to be reported in UL slot n based on the latest CSI-IM and / or NZP CSI-RS opportunity for interference measurement related to the CSI resource configuration that is not later than the CSI reference resource.

[0284] For each subband index s, a 2-bit subband differential CQI may be defined as follows: Subband offset level (s) = Subband CQI index (s) - Wideband CQI index Index

[0285] The combination of modulation scheme and transport block size is considered to be the CQI index in the following cases: According to the transport block size determination, the CSI reference resource may be signalled for transmission on a PDSCH of the reference resource, a modulation scheme is indicated by a CQI index, and the combination of transport block size and modulation scheme, when applied to the reference resource, may result in an effective channel coding rate that is closest to the coding rate indicated by the CQI index. In case there are multiple combinations of transport block size and modulation scheme that result in effective channel coding rates that are equally close to the coding rate indicated by the CQI index, only the combination with the smallest transport block size may be relevant.

[0286] When the terminal device 1 has two antenna ports and the upper layer parameter codebookType is set to "typeI-SinglePanel", each PMI value corresponds to the codebook index as follows: The terminal device 1 may respond by setting the upper layer parameter twoTX-CodebookSubsetRestriction. The bitmap parameter twoTX-CodebookSubsetRestriction may be 0 is the LSB and a 5 is the MSB of the bit string a 5 ,…,a 1 ,a 0 A bit value of 0 may indicate that the PMI report is not allowed to correspond to the precoder associated with that bit. Bits 0 through 3 are associated with codebook indexes 0 through 3, respectively, for layer number 1, and bits Layers 4 and 5 may be associated with codebook indexes 0 and 1, respectively, with layer number 2. .

[0287] When the terminal device 1 has four or more antenna ports and the higher layer parameter codebookType is set to “typeI-SinglePanel”, each PMI value may correspond to a codebook index as follows: When the number of layers v ≠ {2, 3, 4}, each PMI value corresponds to three codebook indexes i 1,1 , i 1,2 , i 2For the number of layers v = {2,3,4}, each PMI value corresponds to four codebook indices i 1,1 , i 1,2 , i 1,3 , i 2 The synthesis codebook index i 1 i 1,1 , i 1,2 , i 1,3 It may consist of all or part of

[0288] k 1 and k 2 i 1,3 , the number of layers v and the antenna configuration N 1 ,N 2 Based on 0 or O 1 ,O 2 may be determined as a multiple of N 1 ,N 2 may be the number of antennas arranged in the horizontal and vertical directions on the antenna panel of the terminal device 1. 1 ,O 2 Terminal device The number of oversamplings that determine the horizontal and vertical beam sweep steps of 1 may be supported (N 1 ,N 2 ) and (O 1 ,O 2 ) is the number of CSI-RS ports of terminal device 1, P CSI-RS It may be determined based on.

[0289] N 1 and N 2 The value of may be configured by higher layer parameters n1-n2. Number of CSI-RS ports P CSI-RS is 2N 1 N 2 It may be given by N 2 If the value of is 1, terminal device 1 1,2 =0 Use only i 1,2 does not have to be reported.

[0290] The bitmap parameters n1-n2 are 0 is the LSB, and a Ac-1 is the MSB of the bit string a Ac-1 ,…,a 1 ,a 0 A bit value of 0 may indicate that the PMI report is not allowed to correspond to any precoder associated with that bit. The number of bits is Ac=N 1 O 1 N 2 O 2 Except for the case where the number of layers v∈{3, 4} and the number of antenna ports is 16, 24, or 32, the bit a N2O2,l+m is the quantity v l,m , l=0,…,N 1 O 1 -1, m=0,…,N 2 O 2 -1. If the number of layers v ∈ {3, 4} and the number of antenna ports is 16, 24, or 32, the bit a (N2O2(2l-1)+m)modN1O1N2O2 ,a N2O2(2l)+m and a N2O2(2l+1)m teeth Each quantity v l,m , l=0,…,N 1 O 1 -1, m=0,…,N 2 O 2 -1, all precoders may be associated with it. If one or more of the associated bits are zero, the PMI report is l,m It may not correspond to any precoder based on

[0291] If the upper layer parameter codebookType is set to "typeI-SinglePanel", The map parameter typeI-SinglePanel-ri-Restriction is 0 is the LSB and r 7 is the MSB of the bit string r 7 ,…,r 1 ,r 0 may be formed. iIf ∑ i∈{0,1,...,7} is 0, the reporting of PMI and RI may not correspond to any precoder associated with layer stratum v=i+1.

[0292] If the higher layer parameter reportQuantity is set to "cri-RI-i1-CQI", the bit The map parameter typeI-SinglePanel-codebookSubsetRestriction-i2 is 0 is the LSB and b 15 b is the MSB 15 ,…,b 1 ,b 0 The bit string b i The codebook Index i 2 b i If is 0, the randomly selected precoder for CQI calculation is the bit b i , may not correspond to any precoder associated with .

[0293] The precoding matrix W is the number of CSI-RS ports P CSI-RS and the quantity φ n , θ p , u m , v l,m , v~ l,m Each of the amounts may be determined based on some or all of l, m, n, and p, where l, m, n, and p are each independently determined based on i 1 and i 2 Part or all of The number of pieces of information may be determined based on the number of pieces of information.

[0294] When the terminal device 1 has eight or more antenna ports and the upper layer parameter codebookType is set to "typeI-MultiPanel", N g ,N 1 and N 2 The value of may be configured by higher layer parameters ng-n1-n2.CSI-RS is 2N g N 1 N 2 Supported (N g ,N 1 ,N 2 ) and (O 1 ,O 2 ) is the number of CSI-RS ports of terminal device 1, P CSI-RS N g If N = 2, then codebookMode may be set to 1 or 2. g If N = 4, then codebookMode may be set to 1. g may be the number of panels constituting the antenna panel of the terminal device 1.

[0295] The bitmap parameters ng-n1-n2 are 0 is the LSB and a Ac-1 is the MSB of the bit string a Ac-1 , …,a 1 ,a 0 A bit value of 0 may indicate that the PMI report does not correspond to any precoder associated with that bit. The number of bits Ac may be N 1 O 1 N 2 O 2 Bit a may be given by N2O2l+m is the quantity v l,m , l=0,…,N 1 O 1 -1, m=0,…,N 2 O 2 The bitmap parameter r i -Restriction may be associated with all precoders based on r 0 is the LSB and r 3 is the MSB of the bit string r 3 ,…,r 1 ,r 0 may be formed. i If is 0, then i∈{0, 1,…,3}, the PMI and RI reporting corresponds to any precoder associated with layer v=i+1. It is not necessary to do so.

[0296] Each PMI value is expressed by a codebook index i 1 and i 2 If the number of layers v=1, then i 1 i 1,1 , i 1,2 , i 1,4 For the number of layers v∈{2,3,4}, i 1 i 1,1 , i 1,2 , i 1,3 , i 1,4 may consist of some or all of the following: where v is the RI value. May be related.

[0297] codebookMode is set to 1 and N g If i = 2, 1,4 i 1,4,1 If codebookMode is set to 1 and N g If i = 4, 1,4 i 1,4,1 , i 1,4,2 , i 1,4,3 If codebookMode is set to 2, then i 1,4 i 1,4,1 , i 1,4,2 It may consist of all or part of i 2 i 2,0 , i 2,1 , i 2,2 Part of or It may be composed of all of them.

[0298] k 1 and k 2 i 1,3 , the number of layers v and the antenna configuration N g ,N 1 ,N 2 Based on 0 or O 1 ,O 2 may be determined as a multiple of N 2 If =1, terminal device 1 is i1,2 Use =0 only S,i 1,2 does not have to be reported.

[0299] Precoding Matrix W (v) l,m,p,n W 1,2,1 l,m,p,n , W 2,2,1 l,m,p,n , W 1,4,1 l,m,p,n , W 2,4,1 l,m,p,n , W 1,2,2 l,m,p,n , W 2,2,2 l,m,p,n Consists of part or whole of Here, W 1,2,1 l,m,p,n , W 2,2,1 l,m,p,n , W 1,4,1 l,m,p,n , W 2,4,1 l,m,p,n , W 1,2,2 l,m,p,n , W 2,2,2 l,m,p,n is the number of CSI-RS ports P CSI-RS and the quantity φ n , a p , b n , u m , v l,m Each of the amounts may be determined based on some or all of l, m, n, and p. or all of the above, and the l, m, n, and p are determined based on i 1 and i 2 Based in part or in whole on Here, p may be determined as p 1 ,p 2 ,p 3 It may consist of all or part of , n is n 0 ,n 1 ,n 2 It may consist of all or part of

[0300] 9 is a diagram showing an example of a method for applying a precoding matrix according to an aspect of this embodiment. In FIG. 9, W represents a precoding matrix. Precoding for the PUSCH is performed based on the coding matrix W.

[0301] In Figure 9, vector d 1 ,d 2 ,…,d K The vector x 1 ,x 2 ,…,x M The vector d 1 ,d 2 ,…,d K may be PUSCH data with a layer number of K. 1 ,x 2 ,…,x M is the transmitting antenna It may be transmission data for M ports. In this case, d 1 ,d 2 ,…,d K x 1 ,x 2 ,…,x M Change to The transformation is obtained by multiplying the precoding matrix W. The size of the packet W may be determined based on the number of layers K and the number of transmitting antenna ports M. Vector x 1 ,x 2 ,…,x M is a vector y 1 ,y 2 ,…,y N is received as Vector y 1 ,y 2 ,…,y N may be received data of the number of receiving antenna ports N. The size of the propagation channel H is determined based on the number of transmitting antenna ports M and the number of receiving antenna ports N. It may be determined.

[0302] In the case of non-codebook transmission, the precoding matrix W can be equal to the identity matrix. In the case of codebook transmission, the precoding matrix W is In the case of one-layer transmission in a single-hop, W may be given as W=1. Otherwise, PUSCH is scheduled. The TPMI index is given by the DCI to be queried or by a higher layer parameter. If the higher layer parameter "txConfig" is not set, the precoding matrix W may be set to 1.

[0303] The antenna configuration of the terminal device 1 is n1-n2-codebookSubsetRestriction, n1-n2-codebookSubse may be given based on tRestriction-r16, n1-n2-codebookSubsetRestriction-r18 .

[0304] The terminal device 1 may edit the capability information of the terminal. The terminal device 1 may transfer the capability information of the terminal. The terminal device 1 receives a UECapabilityEnquiry from the network. When the UE receives the request, the UE capability information may be edited and transmitted. Furthermore, notification of terminal capability information may be performed according to the procedure described below.

[0305] RRC_CONNECTED if the network requires (additional) UE radio access capability information The procedure may be initiated for the terminal at . The UE capabilities may be acquired only after AS security activation. The UE capabilities acquired before AS security activation may not be forwarded to the CN.

[0306] When the ue-CapabilityRAT-RequestList includes a UE-CapabilityRAT-Request with rat-Type set to nr, the terminal device 1 may set the content of the UECapabilityInformation message as follows: The ue-CapabilityRAT-ContainerList may include a UE-CapabilityRAT-Container whose type is UE-NR-Capability and whose rat-Type is set to nr. The supportedBandCombinationList, featureSets, and featureSetCombinations may be included.

[0307] The terminal device 1 is a UE-CapabilityRAT-Request in which the rat-Type is set to eutra-nr in the ue-CapabilityRAT-RequestList and the UE supports (NG)EN-DC or NE-DC. In this case, the content of the UECapabilityInformation message may be set as follows: ue-CapabilityRAT-ContainerList may contain a UE-CapabilityRAT-Container of type UE-MRDC-Capability with rat-Type set to eutra-nr. supportedBandCombinationList and featureSetCombinations may be included.

[0308] If the ue-CapabilityRAT-RequestList includes a UE-CapabilityRAT-Request with rat-Type set to eutra and the UE supports E-UTRA, the terminal device 1 may set the content of the UECapabilityInformation message as follows: The ue-CapabilityRAT-ContainerList may include a ue-CapabilityRAT-Container of type UE-EUTRA-Capability and with rat-Type set to eutra when received.

[0309] When the ue-CapabilityRAT-RequestList includes a UE-CapabilityRAT-Request with rat-Type set to utra-fdd and the UE supports UTRA-FDD, the terminal device 1 may set the content of the UECapabilityInformation message as follows: The ue radio access capability for UTRA-FDD with rat-Type set to utra-fdd may be included in the ue-CapabilityRAT-Container.

[0310] The terminal device 1 determines whether to allow the segmentation of the RRC message based on the received field rrc-SegAllowed. If the RRC message is encoded, the maximum supported size of the PDCP SDU is 100%. If the size is larger than the specified size, the content of the UECapabilityInformation message is set as follows: The UL message segment transfer procedure may be initiated.

[0311] In cases other than the above, the terminal device 1 sets the contents of the UECapabilityInformation message as follows: The UECapabilityInformation message may be sent to the lower layer. At this point the procedure may be terminated.

[0312] The terminal device 1 is a UE for which the NR or E-UTRA network is nr, eutra-nr or eutra. If the capability is requested, the procedure may be called once for each rat-Type requested. The terminal device 1 waits for the network to request the same fields with the same values. It may ensure that the capability set ID is consistent across capability sets, capability set combinations, and band combinations in all three combined UE capability containers, which may be fields in the UE-CapabilityRequestFilterNR, UE-CapabilityRequestFilterCommon, and UECapabilityEnquiry messages.

[0313] Capability queries that do not use frequencyBandListFilter do not have to be supported.

[0314] In EN-DC, the gNB may require capabilities for RAT types nr and eutra-nr. The featureSets in UE-NR-Capability may also be used together with featureSetCombinations in UE-MRDC-Capability to determine NR UE capabilities for supported MRDC band combinations. Similarly, the eNB may require capabilities for RAT types eutra and eutra-nr. The featureSetsEUTRA in UE-EUTRA-Capability may also be used together with featuresSetCombinations in UE-MRDC-Capability to determine E-UTRA UE capabilities for supported MRDC band combinations. The IDs used in featureSets may match the IDs referenced in featureSetCombinations in all three containers. The requirement for consistency may mean that there are no undefined feature sets and feature set combinations.

[0315] If the UE is unable to include all feature sets and feature set combinations due to message size or list size constraints, it may be up to the UE implementation to decide which feature sets and feature set combinations to prioritize.

[0316] Terminal device 1 uses the filter criteria of capabilityRequestFilterCommon (if included). According to the above, the "band combination" consists of only the bands included in the frequencyBandListFilter. You can also create a list of "candidates" for the frequency band list filter. The prioritization may include first the combination of bands that includes the first listed band, then the remaining combination of bands that includes the second listed band, Here, for each band in the band combination, the band parameters may not exceed any of maxBandwidthRequestedDL, maxBandwidthRequestedUL, maxCarriersRequestedDL, maxCarriersRequestedUL, ca-BandwidthClassDL-EUTRA, or ca-BandwidthClassUL-EUTRA, whichever is received.

[0317] The terminal device 1, for each band combination included in the list of "candidate band combinations", if the network (E-UTRA) includes a eutra-nr-only field, or If the requested rat-type is eutra, the NR-only band combination is called “Band combination.” You may remove it from the list of "candidates for replacement."

[0318] The capability for nr may be required by the E-UTRA network, but may be indicated by the eutra-nr-only flag not to include NR band combinations in the UE-NR-Capability. In this case, the above procedure may remove all NR-only band combinations from the candidate list, thereby avoiding the corresponding feature set combinations and the inclusion of the following feature sets:

[0319] The terminal device 1 may determine whether the combination of spare bands has the same capabilities as other band combinations included in the list of "candidate band combinations" or whether the combination of spare bands is generated by releasing at least one SCell or an uplink configuration of an SCell. In that case, the band combination may be removed from the list of "candidate band combinations".

[0320] Even if only eutra-nr capability is requested from the network, the E-UTRA band number is specified in frequencyBandList so that the UE subsequently has the full feature set required for the requested eutra-nr capability. At this point in the process, the list of "potential band combinations" is , may contain all NR- and / or E-UTRA-NR band combinations that match the filter provided by the NW (frequencyBandListFilter) and (if RAT-Type nr is requested by E-UTRA) match the eutra-nr only flag. In the following procedures, this candidate list may be used to derive the band combinations, feature set combinations, and feature sets to be reported in the requested capability container.

[0321] When the requested rat-Type is nr, the terminal device 1 may include as many NR-only band combinations as possible from the list of "candidate band combinations" in the supportedBandCombinationList, starting from the first entry. Also, when an srs-SwitchingTimeRequest is received and SRS carrier switching is supported, the terminal device 1 may include an srs-SwitchingTimesListNR for each band combination. In this case, the srs-SwitchingTimeRequested may be set to true.

[0322] When the requested rat-Type is nr, the terminal device 1 may include in featureSetCombinations feature set combinations referenced from corresponding band combinations included in supportedBandCombinationList. Also, the terminal device 1 may compile a list of "candidate function set combinations" referenced from the list of "candidate band combinations" by excluding entries (lines of function set combinations) with the same or lower capabilities.

[0323] When the terminal device 1 receives an uplinkTxSwitchRequest with the requested rat-Type being nr, If srs-SwitchingTimeRequest is received and SRS carrier switching is supported, srs-SwitchingTimesListNR may be included for each band combination in the list of "candidate band combinations" that support UL TX switching, starting from the first entry, if possible. In this case, srs-SwitchingTimeRequest may be set to true.

[0324] When the terminal device 1 receives an uplinkTxSwitchRequest with the requested rat-Type being nr, In this case, the featureSetCombinations contains the It may also include a function set combination referenced from the support band combination.

[0325] This list of "candidate feature set combinations" does not only include E-UTRA-NR band combinations. The list may include a combination of feature sets used specifically for NR, rather than just for NR. This list may be used to derive a list of NR feature sets referenced from the combination of feature sets in the UE-NR-Capability container and the combination of feature sets in the UE-MRDC-Capability container.

[0326] When the requested rat-Type is nr, the terminal device 1 may include in featureSets a feature set referred to from the "combination of candidate feature sets." In addition, the terminal device 1 may receive or exclude a feature set having a parameter exceeding any of maxBandwidthRequestedDL, maxBandwidthRequestedUL, maxCarriersRequestedDL, and maxCarriersRequestedUL.

[0327] When the requested rat-Type is eutra-nr, the terminal device 1 may include as many E-UTRA-NR band combinations as possible from the list of "candidate band combinations" in supportedBandCombinationList and / or supportedBandCombinationListNEDC-Only, starting from the first entry. Also, when an srs-SwitchingTimeRequest is received and SRS carrier switching is supported, the terminal device 1 may include srs-SwitchingTimesListNR and srs-SwitchingTimesListEUTRA for each band combination. In this case, srs-SwitchingTimeRequested may be set to true.

[0328] When the requested rat-Type is eutra-nr, the terminal device 1 may include in featureSetCombinations, in accordance with the preceding paragraph, feature set combinations referenced from corresponding band combinations included in supportedBandCombinationList. Also, the terminal device 1 may compile a list of "candidate feature set combinations" referenced from the list of "candidate band combinations" excluding entries (lines of feature set combinations) with the same or lower capabilities.

[0329] The terminal device 1 receives an uplinkTxSwitchRequest with the requested rat-type being eutra-nr. If the TXSwitch is set to 0, the band combination list is displayed. Select the NR-only band combination that supports UL TX switching from the list in the "Supplementary" Also, if an srs-SwitchingTimeRequest is received and SRS carrier switching is supported, the band combinations In this case, srs-SwitchingTimeRequested may be set to true.

[0330] The terminal device 1 receives an uplinkTxSwitchRequest with the requested rat-type being eutra-nr. If you set the featureSetCombinations to supportedBandCombinationList-UplinkTxSwitch, It may also include a function set combination referenced from the support band combination included in.

[0331] If the requested rat-type is eutra, the terminal device 1 selects "candidate band combinations" A list of "candidate feature set combinations" referenced from the list may be compiled by excluding entries (feature set combination rows) with the same or lower capabilities.

[0332] This list of "candidate feature set combinations" may include feature set combinations used for E-UTRA-NR band combinations, and may be used to derive a list of E-UTRA feature sets referenced from the feature set combinations in the UE-MRDC-Capability container.

[0333] If the requested rat-Type is eutra, the terminal device 1 may include in featureSetsEUTRA (in UE-EUTRA-Capability) a feature set referenced from the "combination of candidate feature sets." In addition, the terminal device 1 may receive or exclude a feature set with parameters exceeding ca-BandwidthClassDL-EUTRA or ca-BandwidthClassUL-EUTRA.

[0334] Terminal device 1 determines that the requested rat-type is nr and the eutra-nr-only field is network The received frequencyBandListFilter may be included in the field appliedFreqBandListFilter of the requested UE capability, except when the frequencyBandListFilter is included in the field appliedFreqBandListFilter of the requested UE capability.

[0335] If ue-CapabilityEnquiryExt is included in the network, the terminal device 1 may include the received ue-CapabilityEnquiryExt in the receivedFilters field.

[0336] The terminal device 1 transmits first information and determines a precoding matrix for a PUSCH. and receiving second information for determining whether the PUSCH is scheduled by DCI and whether the PUSCH is scheduled by DCI. The terminal device 1 may transmit the first information, and may determine a precoding matrix based on the second information for determining a precoding matrix for the PUSCH, and perform precoding for the PUSCH based on the precoding matrix. The terminal device 1 may receive second information. The second information may include precoding information for a PUSCH. The precoding matrix may be used to determine a precoding matrix. The precoding matrix may be used in precoding for the PUSCH. The precoding matrix may be determined based at least on the DCI and the second information. The DCI may schedule the PUSCH. Based on the precoding matrix, the terminal device 1 may perform precoding for the PUSCH. Precoding may be performed based at least on the precoding matrix. The second information may be information for calculating a precoding matrix.

[0337] The first information may be capability information of the terminal device 1. The first information may be the number of antenna ports. The first information may be information indicating one or more numbers of antenna ports. The first information may be information indicating two numbers of antenna ports and one number of panels. The first information may be information indicating the number of first antenna ports in a first dimension and a second dimension. The first information may be determined based on an antenna configuration of the terminal device 1. The first information may be UE capability determined based on an antenna configuration of the terminal device 1. The first information may be transmitted (reported) to the base station device 3 as UE capability. The first information may be assistance information determined based on an antenna configuration of the terminal device 1. The first information may be an RRC parameter determined based on an antenna configuration of the terminal device 1. The first information may be determined based on channel state information. The first information may be UE capability determined based on channel state information. The first information may be assistance information determined based on channel state information. The first information may be an RRC parameter determined based on channel state information. The first information may be the number of antennas (physical antennas) of the terminal device 1. The first information may be information related to one or both of the number of antennas and the placement of the antennas.

[0338] The first information includes nrOfAntennaPorts, twoTX-CodebookSubsetRestriction, n1-n2, typeI-SinglePanel-codebookSubsetRestriction-i2, typeI-SinglePanel-ri-Restriction, ng-n1-n2, ri-Restriction, codebookMode, n1-n2-codebookSubsetRestriction, typeII-RI-Restriction, portSelectionSamplingSize, typeII-PortSelectionRI-Restriction, phaseAlphabetSize, subbandAmplitude, numberOfBeams, n1-n2-codebookS The first information may be some or all of N1-n2-codebookSubsetRestriction-r16, typeII-RI-Restriction-r16, portSelectionSamplingSize-r16, typeII-PortSelectionRI-Restriction-r16, numberOfPMI-SubbandsPerCQI-Subband-r16, paramCombination-r16, n1-n2-codebookSubsetRestriction-r18, typeII-RI-Restriction-r18, portSelectionSamplingSize-r18, typeII-PortSelectionRI-Restriction-r18, and numberOfPMI-SubbandsPerCQI-Subband-r18. g ,N 1 ,N 2 ,O 1 ,O 2 ,i 1 ,i 2 ,k 1 ,k 2 , l, m, n, p may be some or all of the above.

[0339] The second information may be an RRC parameter. The second information may be an RRC parameter for determining a codebook to be used in precoding for the PUSCH. The second information may be the number of antenna ports. The second information may be information indicating one or more numbers of antenna ports. The second information may be information indicating two numbers of antenna ports and one number of panels. The second information may be information indicating the number of second antenna ports in a first dimension and a second dimension. The number of first antenna ports indicated by the first information may be different from the number of second antenna ports indicated by the second information. For example, the number of second antenna ports may be the same as the number of first antenna ports or may be smaller than the number of first antenna ports. The number of first panels indicated by the first information may be different from the number of second panels indicated by the second information. The second information may be determined based on the antenna configuration of the terminal device 1. The second information may be UE capability determined based on the antenna configuration of the terminal device 1. The second information may be transmitted (reported) to the base station device 3 as UE capability. The second information may be assistance information determined based on the antenna configuration of the terminal device 1. The second information may be an RRC parameter determined based on the antenna configuration of the terminal device 1. The second information may be determined based on channel state information. The second information may be UE capability determined based on channel state information. The second information may be assistance information determined based on channel state information. The second information may be an RRC parameter determined based on channel state information. The second information may be information for restricting a codebook subset. For example, the second information may be information for restricting a codebook subset. For example, a codebook subset may be determined based at least on the second information.

[0340] The second information includes nrOfAntennaPorts, twoTX-CodebookSubsetRestriction, n1-n2, typeI-SinglePanel-codebookSubsetRestriction-i2, typeI-SinglePanel-ri-Restriction, ng-n1-n2, ri-Restriction, codebookMode, n1-n2-codebookSubsetRestriction, typeII-RI-Restriction, portSelectionSamplingSize, typeII-PortSelectionRI-Restriction, phaseAlphabetSize, subbandAmplitude, numberOfBeams, n1-n2-codebookS The second information may be some or all of N1-n2-codebookSubsetRestriction-r16, typeII-RI-Restriction-r16, portSelectionSamplingSize-r16, typeII-PortSelectionRI-Restriction-r16, numberOfPMI-SubbandsPerCQI-Subband-r16, paramCombination-r16, n1-n2-codebookSubsetRestriction-r18, typeII-RI-Restriction-r18, portSelectionSamplingSize-r18, typeII-PortSelectionRI-Restriction-r18, and numberOfPMI-SubbandsPerCQI-Subband-r18. g ,N 1 ,N 2 ,O 1 ,O 2 ,i 1 ,i 2 ,k 1 ,k 2 , l, m, n, p may be some or all of the above.

[0341] The information for determining the codebook matrix from the codebook subset restricted based on the first information may be indicated by the DCI. From the codebook subset, the information for determining the codebook matrix is Here, the information for determining the codebook matrix is ​​i1 and i2. i 1 ,i 2 may be indicated by the DCI. Each value of the TPMI field in the DCI may be associated with i1 and i2.

[0342] The information indicating the number of antenna ports in the first dimension and the second dimension is N 1 and N 2 The information indicating the number of antenna ports in the first dimension and the second dimension may be N g ,N 1 ,N 2 The information indicating the number of first antenna ports in the first dimension and the second dimension and the information indicating the number of second antenna ports in the first dimension and the second dimension may be the same or different information. The information indicating the number of first antenna ports in the first dimension and the second dimension and the information indicating the number of second antenna ports in the first dimension and the second dimension may be determined by comparison.

[0343] Various aspects of the device according to one aspect of this embodiment will be described below.

[0344] (1) A first aspect of the present invention is a terminal device comprising: a receiving unit that receives a PDCCH in which DCI that schedules a PUSCH is arranged; and a transmitting unit that transmits the PUSCH, wherein the transmitting unit transmits terminal capability information, the terminal capability information being information indicating the number of first antenna ports in a first dimension and a second dimension; the receiving unit receives RRC parameters, a precoding matrix for the PUSCH is determined based at least on the DCI and the RRC parameters, the precoding is performed based at least on the precoding matrix, and the RRC parameters are information for calculating the precoding matrix.

[0345] (2) Furthermore, the capability information of the terminal is determined based on one or both of the antenna configuration and channel state information of the terminal device.

[0346] (3) Furthermore, the information for calculating the preceding matrix is ​​information indicating the number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information.

[0347] (4) Moreover, a second aspect of the present invention is a base station device comprising: a transmitter that transmits a PDCCH in which DCI that schedules a PUSCH is arranged; and a receiver that receives the PUSCH, wherein the receiver receives capability information of a terminal, the capability information of the terminal being information indicating the number of first antenna ports in a first dimension and a second dimension; the transmitter transmits RRC parameters for determining a codebook to be used in precoding for the PUSCH, determines that a precoding matrix for the PUSCH is determined based at least on the DCI and the RRC parameters, determines that the precoding is performed based at least on the precoding matrix, and the RRC parameters are information for calculating the precoding matrix.

[0348] (5) Furthermore, the capability information of the terminal is determined based on one or both of the antenna configuration and channel state information of the terminal device.

[0349] (6) Furthermore, the information for calculating the preceding matrix is ​​information indicating a number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information.

[0350] (7) A third aspect of the present invention is a communication method for use in a terminal device, comprising: receiving a PDCCH including DCI for scheduling a PUSCH; and transmitting capability information of a terminal, the capability information being information regarding a capability for a terminal device to determine a precoding matrix, receiving an RRC parameter for determining a codebook to be used in a precoding; determining a precoding matrix based at least on the DCI and the RRC parameter; A precoding matrix is ​​provided for the PUSCH. The process is carried out.

[0351] (8) Furthermore, the capability information of the terminal is determined based on one or both of the antenna configuration and channel state information of the terminal device.

[0352] (9) Furthermore, the information for calculating the preceding matrix is ​​information indicating a number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information.

[0353] (10) Moreover, a fourth aspect of the present invention is a communication method used in a base station device, comprising the steps of: transmitting a PDCCH including a DCI for scheduling a PUSCH; and receiving a PUSCH, receiving terminal capability information, the terminal capability information being information regarding the capability of the terminal device for determining a precoding matrix; transmitting RRC parameters for determining a codebook to be used in precoding for the PUSCH; determining that a precoding matrix is ​​determined based at least on the DCI and the RRC parameters; and determining that precoding for the PUSCH is performed based at least on the precoding matrix.

[0354] (11) Furthermore, the capability information of the terminal is determined based on one or both of an antenna configuration and channel state information of the terminal device.

[0355] (12) Furthermore, the information for calculating the preceding matrix is ​​information indicating a number of second antenna ports of a first dimension and a second dimension, or the information for calculating the preceding matrix is ​​determined based on channel state information.

[0356] The base station device 3 and the program operating in the terminal device 1 according to the present invention are The information handled by these devices may be temporarily stored in a RAM (Random Access Memory) during processing. Then, various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive) The data is stored in the EEPROM and is read, modified, and written by the CPU as necessary.

[0357] In addition, a part of the terminal device 1 and the base station device 3 in the above-mentioned embodiment may be realized by a computer. In that case, a program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed to realize the control function.

[0358] The "computer system" 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 "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into the computer system.

[0359] 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, and a medium that stores a program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or client in such a case. The above program may be one that realizes part of the above-mentioned functions, or may be one that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0360] Furthermore, the base station device 3 in the above-described embodiment can also be realized as an aggregate (device group) consisting of a plurality of 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 an aggregate.

[0361] In addition, the base station device 3 in the above-mentioned embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or an NG-RAN (NextGen RAN, NR RAN). In addition, the base station device 3 in the above-mentioned embodiment may have a part or all of the functions of an upper node for an eNodeB and / or a gNB.

[0362] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiment may be realized as an LSI, which is typically an integrated circuit, or may be realized as a chip set. Each functional block of the terminal device 1 and the base station device 3 may be individually integrated into a chip, or may be integrated into a chip in part or in whole. The integrated circuit method is not limited to LSI, but may be a dedicated circuit, It may also be realized by a general-purpose processor. Also, with the advancement of semiconductor technology, it may be possible to use a centralized processor that replaces LSI. When a technology for integrated circuitry emerges, it is also possible to use integrated circuits based on that technology.

[0363] In addition, 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.

[0364] The embodiment of the present invention has been described above in detail with reference to the drawings. The present invention is not limited to the above-mentioned embodiments, but also includes design modifications within the scope of the gist of the present invention. Various modifications of the present invention are possible within the scope of the claims, and the technical scope of the present invention also includes embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Also included are configurations in which elements described in the above-mentioned embodiments are replaced with elements that have the same effect. [Explanation of symbols]

[0365] 1(1A, 1B, 1C) Terminal equipment 3 Base station equipment 10, 30 Radio transmitter / receiver 10a, 30a Wireless transmitter 10b, 30b Wireless receiver 11, 31 Antenna section 12, 32 RF section 13, 33 Baseband section 14, 34 Upper layer processing unit 15, 35 Media access control layer processing unit 16, 36 Radio resource control layer processing unit 91, 92, 93, 94 Search area set 300 Component Carriers 301 Primary Cell 302, 303 Secondary Cell A set of resource elements for 700 PSS 710, 711, 712, 713 Set of resource elements for PBCH and DMRS for PBCH 720 Set of Resource Elements for SSS 3000 points 3001, 3002 Resource Grid 3003, 3004 BWP 3011, 3012, 3013, 3014 offset 3100, 3200 common resource block set

Claims

1. A receiving unit for receiving a PDCCH in which DCI for scheduling a PUSCH is arranged; A transmission unit that transmits the PUSCH, The transmission unit transmits capability information of a terminal, The capability information of the terminal is information indicating a number of first antenna ports in a first dimension and a second dimension, The receiving unit receives RRC parameters, A precoding method for the PUSCH based on at least the DCI and the RRC parameters. The input matrix is ​​determined, The preceding is performed based at least on the preceding matrix; The RRC parameters are information for calculating the precoding matrix. R, Terminal device.

2. The capability information of the terminal is determined based on an antenna configuration of the terminal device. The terminal device according to claim 1 .

3. The capability information of the terminal is determined based on the channel state information. The terminal device according to claim 1 .

4. The information for calculating the precoding matrix is ​​information indicating the number of second antenna ports of a first dimension and a second dimension. The terminal device according to claim 1 .

5. The information for calculating the precoding matrix is ​​determined based on channel state information. The terminal device according to claim 1 .

6. A transmitter for transmitting a PDCCH in which DCI for scheduling a PUSCH is arranged; A receiving unit for receiving the PUSCH, The receiving unit receives capability information of a terminal, The capability information of the terminal is information indicating a number of first antenna ports in a first dimension and a second dimension, The transmitting unit determines a codebook to be used in precoding for the PUSCH. Sending RRC parameters for A precoding method for the PUSCH based on at least the DCI and the RRC parameters. Understand that the input matrix will be determined. Understanding that the preceding is performed based at least on the preceding matrix; The RRC parameters are information for calculating the precoding matrix. R, Base station equipment.

7. The capability information of the terminal is determined based on an antenna configuration of the terminal device. The base station device according to claim 6.

8. The capability information of the terminal is determined based on the channel state information. The base station device according to claim 6.

9. The information for calculating the precoding matrix is ​​information indicating the number of second antenna ports of a first dimension and a second dimension. The base station device according to claim 6.

10. The information for calculating the precoding matrix is ​​determined based on channel state information. The base station device according to claim 6.

11. receiving a PDCCH on which DCI for scheduling a PUSCH is placed; transmitting the PUSCH; Send device capability information, The capability information of the terminal is information indicating a number of first antenna ports in a first dimension and a second dimension, Transmitting an RRC parameter for determining a codebook to be used in precoding for the PUSCH; A precoding method for the PUSCH based on at least the DCI and the RRC parameters. The input matrix is ​​determined, The preceding is performed based at least on the preceding matrix; The RRC parameters are information for calculating the precoding matrix. R, Communication methods.

12. The capability information of the terminal is determined based on an antenna configuration of the terminal device. The communication method according to claim 11.

13. The capability information of the terminal is determined based on the channel state information. The communication method according to claim 11.

14. The information for calculating the precoding matrix is ​​information indicating the number of second antenna ports of a first dimension and a second dimension. The communication method according to claim 11.

15. The information for calculating the precoding matrix is ​​determined based on channel state information. The communication method according to claim 11.

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