Terminal equipment and base station equipment

Abstract

To provide terminal equipment, base station equipment, and methods for efficient communication. [Solution] In a wireless communication system, terminal device 1 comprises a transmitting unit that transmits an SRS resource and a receiving unit that receives a PDCCH on which a DCI is located. The DCI indicates the SRS resource. The SRS resource has 8 ports and consists of N OFDM symbols. The 8 SRS ports are arranged across S OFDM symbols, with a set number of repetitions R for the SRS resource, and each of the 8 SRS ports is located in the first subcarrier set in the first OFDM symbol set and in the second subcarrier set in the second OFDM symbol set. The first OFDM symbol set and the second OFDM symbol set each consist of R × S OFDM symbols, mod(N, R × S) is 0.

Description

[Technical Field]

[0001] This invention relates to terminal equipment and base station equipment. [Background technology]

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

[0003] 3GPP is considering a next-generation standard (NR: New Radio) to propose to the International Mobile Telecommunication Union (ITU) for next-generation mobile communication systems, IMT-2020 (Non-Patent Literature 1). NR is a single technological framework that utilizes eMBB (enhanced Mobile Broadband) It is required to meet the requirements for three scenarios: ), mMTC (massive machine type communication), and URLLC (ultra-reliable and low-latency communication). .

[0004] 3GPP is considering expanding the services supported by NR (non- Patent Document 2

Prior Art Documents

Non-Patent Documents

[0005]

Non-Patent Document 1

Non-Patent Document 2

Non-Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention provides a terminal device that communicates efficiently, a communication method used in the terminal device, a base station device that communicates efficiently, and a communication method used in the base station device.

Means for Solving the Problems

[0007] (1) A first aspect of the present invention is a terminal device comprising a transmitting unit that transmits SRS resources and a receiving unit that receives a PDCCH on which a DCI is located, wherein the DCI indicates the SRS resources Furthermore, the number of SRS ports for the SRS resource is 8, and the SRS resource has N OFDM The symbols consist of eight SRS ports, which are arranged across S OFDM symbols, and The number of repetitions R is set for the SRS resource, and each of the eight SRS ports is placed in the first subcarrier set in the first OFDM symbol set, and the eight SRS ports Each of the symbols is placed in the second subcarrier set in the second OFDM symbol set, and each of the first OFDM symbol set and the second OFDM symbol set is R It consists of ×S OFDM symbols, and modulo(N, R×S) is 0.

[0008] (2) A second aspect of the present invention is a terminal device that transmits SRS resources The system comprises a unit and a receiving unit that receives a PDCCH on which a DCI is located, the DCI directs the SRS resources, the number of SRS ports for the SRS resources is 8, and the SRS resources are N It consists of OFDM symbols, and the eight SRS ports are arranged across S OFDM symbols. Then, the number of repetitions R is set for the SRS resource, and each of the eight SRS ports is placed in the first subcarrier set in the first OFDM symbol set, and the eight preceding Each of the SRS ports is in the second OFDM symbol set, and the second subcarrier set The first OFDM symbol set and the second OFDM symbol set are arranged in a , and each of them consists of R OFDM symbols, mod(N, R) is 0 and mod(R, S) is 0.

[0009] (3) A third aspect of the present invention is a base station device that receives SRS resources. The system comprises a signal unit and a transmission unit that transmits a PDCCH on which a DCI is located, wherein the DCI indicates the SRS resource, the number of SRS ports for the SRS resource is 8, and the SRS resource is N It consists of 8 OFDM symbols, and the 8 SRS ports are arranged across the 8 OFDM symbols. The number of iterations R is set for the SRS resources, and each of the eight SRS ports is placed in the first subcarrier set in the first OFDM symbol set, and the eight Each of the aforementioned SRS ports is a second subcarrier in the second OFDM symbol set. The first OFDM symbol set and the second OFDM symbol set are arranged in a set, and each of them consists of R × S OFDM symbols, with mod(N, R × S) being 0. [Effects of the Invention]

[0010] According to this invention, terminal devices can communicate efficiently. Furthermore, base station devices can communicate efficiently. [Brief explanation of the drawing]

[0011] [Figure 1] This is a conceptual diagram of a wireless communication system according to one aspect of this embodiment. [Figure 2] This is an example showing the relationship between the subcarrier spacing setting μ, the number of OFDM symbols per slot Nslot symb, and the CP (cyclic prefix) setting according to one aspect of this embodiment. [Figure 3] This figure shows an example of a method for configuring a resource grid according to one aspect of this embodiment. [Figure 4] This figure shows an example configuration of a resource grid 3001 according to one aspect of this embodiment. [Figure 5] This is a schematic block diagram showing an example of the configuration of a base station device 3 according to one aspect of this embodiment. [Figure 6] This is a schematic block diagram showing an example of the configuration of a terminal device 1 according to one aspect of this embodiment. [Figure 7] This figure shows an example of the configuration of an SS / PBCH block according to one aspect of this embodiment. [Figure 8] This figure shows an example of a monitoring opportunity for a search area set according to one aspect of this embodiment. [Figure 9] This figure shows an example of TDM-based mapping for SRS according to one aspect of this embodiment. [Modes for carrying out the invention]

[0012] Embodiments of the present invention will be described below.

[0013] floor(C) may also be a floor function for a real number C. For example, floor(C) may be a floor function for a real number C. It may also be a function that outputs the largest integer within a range that does not exceed a certain value. ceil(D) may also be a ceiling function for a real number D. For example, ceil(D) may also be a function that outputs the smallest integer within a range that does not fall below a real number D. mod(E,F) is a function that outputs the remainder when E is divided by F. That's fine. mod(E,F) is a function that outputs the value corresponding to the remainder when E is divided by F. This is also acceptable. exp(G) = e^G, where e is Napier's number. H^I represents H to the power of I. 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 either 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 either L or M. round(N) is a function that outputs the integer value closest to N. "·" represents multiplication.

[0014] In a wireless communication system according to one aspect of this embodiment, at least OFDM (Orthogonal Frequency Division Multiplex) is used. OFDM symbols are units in the time domain of OFDM. The OFDM symbol includes at least one or more subcarriers. The OFDM symbol is converted to a time-continuous signal in baseband signal generation. At least CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplex) is used on the downlink. Either CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplex) is used on the uplink. DFT-s-OFDM may be given by applying transform precoding to CP-OFDM.

[0015] An OFDM symbol may be a designation that includes a CP (Character Protection) attached to the OFDM symbol. In other words, an OFDM symbol may consist of the OFDM symbol itself and a CP attached to it.

[0016] Figure 1 is a conceptual diagram of a wireless communication system according to one embodiment of this model. In Figure 1, the wireless communication system comprises at least terminal devices 1A to 1C and a base station device 3 (BS#3: Base station#3). Hereinafter, terminal devices 1A to 1C will also be referred to as terminal device 1 (UE#1: User Equipment#1).

[0017] The base station device 3 may consist of one or more transmitting devices (or a transmitting point, a transceiver, and a transceiver). If the base station device 3 consists of multiple transmitting devices, each of the multiple transmitting devices may be located in a different position.

[0018] 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. Also, the serving cell is also referred to as a cell.

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

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

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

[0022] The resource grid is N subframe,μ symb Includes individual OFDM symbols.

[0023] Subscript x, which is attached to parameters related to the resource grid, specifies the transmission direction. For example, subscript x indicates either a downlink or an uplink. It may be used for that purpose.

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

[0025] Subcarrier Spacing (SCS) for a given subcarrier spacing μ )Δf is Δf=2 μ It may also be 15kHz. Here, the setting μ for the subcarrier interval is 0 It may represent 1, 2, 3, or 4.

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

[0027] Time unit (T) c This may be used to represent length in the time domain. Time unit T c is, T c = 1 / (Δf max ·N f ) is Δf max = 480kHz. f =409 The answer is 6. The constant κ is given by κ = Δf max ·N f / (Δf ref N f,ref ) = 64. Δf ref is, 1 It is 5kHz. f,ref The answer is 2048.

[0028] The transmission of a signal on the downlink and / or the uplink is of length T. f It may be organized into wireless frames (system frames, frames). f =(Δf max N f / 100)·T s = 10ms. A wireless frame consists of 10 subframes. The length of a subframe is T. sf =(Δf max N f / 1000)·T s = 1ms. The number of OFDM symbols per subframe is N. subframe,μsymb =N slot symb N subframe,μ slot That is the case.

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

[0030] A slot may consist of multiple OFDM symbols, for example, N consecutive symbols. slot symb A single OFDM symbol may constitute one slot. For example, a normal CP In the settings, N slot symb =14 is also acceptable. Furthermore, in the settings for extended CP, N slot symb =12 is also acceptable.

[0031] For a certain subcarrier interval setting μ, the number of slots and their indices within the subframe may be given. For example, slot index n μ s In the subframe, the range is from 0 to N subframe,μ slot The integer values ​​may be given in ascending order within the range of -1. For setting the rear spacing μ, the number and index of slots included in the wireless frame may be given. Also, slot index n μ s,f In wireless frames, the range is 0 to N frame,μ slot The integer values ​​may also be given in ascending order within the range of -1.

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

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

[0034] Point 3000 is an identifier used to identify a specific subcarrier. Point 3000 is also called Point A. Common resource block (CRB) set 3100 is a common resource block for setting the subcarrier interval μ1. It's a rock set.

[0035] Among the common resource block set 3100, the common resource block containing point 3000 (the black block in the common resource block set 3100 in Figure 3) is also referred to as the reference point of the common resource block set 3100. The reference point of the common resource block set 3100 may be the common resource block at index 0 in the common resource block set 3100.

[0036] Offset 3011 is the offset from the reference point of the common resource block set 3100 to the reference point of the resource grid 3001. Offset 3011 is indicated by the number of common resource blocks relative to the subcarrier spacing setting μ1. The resource grid 3001 starts from the reference point of the resource grid 3001. size,μgrid1,x Includes several common resource blocks.

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

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

[0039] Among the common resource block set 3200, the common resource block containing point 3000 (the solid black block in the common resource block set 3200 in Figure 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 also be the common resource block with index 0 in the common resource block set 3200.

[0040] Offset 3012 is the offset from the reference point of the common resource block set 3200 to the reference point of the resource grid 3002. Offset 3012 is subcarrier This is indicated by the number of common resource blocks relative to the interval μ2. The resource grid 3002 is N starting from the reference point of the resource grid 3002. size,μ grid2,x Includes several common resource blocks.

[0041] Offset 3014 is the distance from the reference point of resource grid 3002 to the reference point of BWP3004 of index i2 (N start,μ BWP,i2 This is the offset up to ).

[0042] Figure 4 shows an example configuration of a resource grid 3001 according to one aspect of this embodiment. In the resource grid of Figure 4, the horizontal axis is the OFDM symbol index l sym The vertical axis represents the subcarrier index k.sc It is. The resource grid 3001 includes N size,μ grid1,x N RB sc sub - carriers and includes N subframe,μ symb OFDM symbols. In the resource grid, the resource specified by the sub - carrier index k sc and the OFDM symbol index l sym is also called a resource element (RE).

[0043] A resource block (RB) includes N RB sc consecutive sub - carriers [[ID=2P]] and is a general term for a common resource block, a physical resource block (PRB), and a virtual resource block (VRB). Here, N = 12. RB sc

[0044] A resource block unit is a set of resources corresponding to 1 OFDM symbol in one resource block. That is, one resource block unit includes 12 resource elements corresponding to 1 OFDM symbol in one resource block. [[ID=P6]]

[0045] For the common resource block with a sub - carrier spacing setting μ, in a certain common resource block set, the index is assigned in ascending order from 0 in the frequency domain (indexing). The common resource block with index 0 for a sub - carrier spacing setting μ includes (or collides with, coincides with) point 3000. The index n μ CRB of the common resource block for a sub - carrier spacing setting μ is nμ CRB =ceil(k sc / N RB sc The relationship ) is satisfied. Here, k sc A subcarrier with =0 corresponds to point 3000. This is a subcarrier that has the same center frequency as the other subcarrier.

[0046] For a given subcarrier interval setting μ, the physical resource block in a given BWP is: In the frequency domain, indexing is performed in ascending order from 0. The index n of a physical resource block for a given subcarrier interval setting μ. μ PRB is, n μ CRB =n μ PRB +N start,μ BWP,i The following relationship is satisfied. Here, N start,μ BWP,i This indicates the baseline for BWP of index i.

[0047] BWP is defined as a subset of common resource blocks included in a resource grid. The BWP is defined as the reference point N of the BWP. start,μ BWP,i N starting with size,μ BWP,i Individual common lith Includes the link block. The BWP set for the downlink carrier is also called the downlink BWP. The BWP set for the uplink component carrier is also called the uplink BWP.

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

[0049] The fact that the large-scale properties of a channel through which symbols are transmitted in one antenna port can be estimated from the channels through which symbols are transmitted in another antenna port is referred to as QCL (Quasi Co-Located). Here, the large-scale characteristics may include at least the long-interval characteristics of the channel. The large-scale characteristics include at least some or all of the delay spread, Doppler spread, Doppler shift, average gain, average delay, and some or all of the spatial Rx parameters. That's fine. The first and second antenna ports are QCL with respect to beam parameters if the received beam assumed by the receiver for the first antenna port and the second antenna port are QCL. The receiving beam assumed by the receiving side for the antenna port may be the same (or corresponding) as the receiving beam. The first antenna port and the second antenna port are QCL with respect to beam parameters if the transmitting beam assumed by the receiving side for the first antenna port and The transmission beam assumed by the receiving side for the second antenna port may be the same (or corresponding). Terminal device 1 assumes that the two antenna ports are QCLs if the large-scale characteristics of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at the other antenna port. It is also acceptable for it to be assumed that two antenna ports are QCLs.

[0050] Carrier aggregation is the aggregation of multiple servings Communication may be performed using cells. Furthermore, carrier aggregation may be performed using multiple aggregated component carriers. Also, carrier aggregation may be performed using multiple aggregated downlink component carriers. Furthermore, carrier aggregation may be performed using multiple aggregated uplink component carriers.

[0051] Figure 5 is a schematic block diagram showing an example of the configuration of a base station device 3 according to one aspect of this embodiment. As shown in Figure 5, the base station device 3 includes at least a part or all of a wireless transceiver unit (physical layer processing unit) 30 and / or a higher layer processing unit 34. The wireless transceiver unit 30 includes an antenna unit 31, an RF (Radio Frequency) unit 32, and a baseband The upper layer processing unit 34 includes at least part or all of the D unit 33. The upper layer processing unit 34 includes at least part or all of the media access control layer processing unit 35 and the radio resource control (RRC) layer processing unit 36.

[0052] The wireless transmitting / receiving unit 30 includes at least part or all of the wireless transmitting unit 30a and the wireless receiving unit 30b. Here, the device configuration of the baseband unit included in the wireless transmitting unit 30a and the baseband unit included in the wireless receiving unit 30b may be the same or different. Also, the device configuration of the RF unit included in the wireless transmitting unit 30a and the RF unit included in the wireless receiving unit 30b may be the same or different. Also, the antenna unit included in the wireless transmitting unit 30a and the wireless receiving unit The device configuration of the antenna section included in the signal terminal 30b may be the same or different.

[0053] For example, the wireless transmission unit 30a may generate and transmit a PDSCH baseband signal. For example, the wireless transmission unit 30a may generate and transmit a PDCCH baseband signal. For example, the wireless transmission unit 30a may generate and transmit a PBCH baseband signal. For example, The line transmission unit 30a may generate and transmit a baseband signal of the synchronization signal. For example, The line transmission unit 30a may generate and transmit a PDSCH DMRS baseband signal. For example, the wireless transmission unit 30a may generate and transmit a PDCCH DMRS baseband signal. For example The wireless transmission unit 30a may generate and transmit a CSI-RS baseband signal. For example, the wireless transmission unit 30a may generate and transmit a DL PTRS baseband signal. For example, The generation unit in the wireless transmission unit 30a may generate a baseband signal.

[0054] For example, the wireless receiver 30b may receive PRACH. For example, the wireless receiver 30b may receive and demodulate PUCCH. The wireless receiver 30b may receive and demodulate PUSCH. For example, the wireless receiver 30b may receive PUCCH DMRS. For example, the wireless receiver 30b The wireless receiver 30b may receive PUSCH DMRS. For example, the wireless receiver 30b may receive UL PTRS. For example, the wireless receiver 30b may receive SRS.

[0055] The upper layer processing unit 34 outputs downlink data (transport blocks) to the wireless transceiver unit 30 (or wireless transmitter unit 30a). The upper layer processing unit 34 performs processing at the MAC (Medium Access Control) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.

[0056] The media access control layer processing unit 35, which is part of the upper layer processing unit 34, performs MAC layer processing.

[0057] The wireless resource control layer processing unit 36, which is part of the upper layer processing unit 34, performs RRC layer processing. The line resource control layer processing unit 36 ​​processes various setting information / parameters (RRC parameters) of the terminal device 1. The wireless resource control layer processing unit 36 ​​manages the RRC message received from terminal device 1. Set the parameters based on the sage.

[0058] The wireless transceiver unit 30 (or wireless transmission unit 30a) performs processing such as modulation and encoding. The wireless transceiver unit 30 (or wireless transmission unit 30a) modulates and encodes the downlink data. A physical signal is generated by generating a baseband signal (converting it to a time-continuous signal) and transmitted to the terminal device 1. The wireless transceiver 30 (or wireless transmitter 30a) then transmits the physical signal. It may be placed on a component carrier and transmitted to terminal device 1.

[0059] The wireless transceiver unit 30 (or wireless receiver unit 30b) performs processing such as demodulation and decoding. The wireless transmitting / receiving unit 30 (or wireless receiving unit 30b) separates, demodulates, and processes the received physical signal. The signal is decoded, and the decoded information is output to the upper layer processing unit 34. The wireless transceiver 30 (or wireless receiver 30b) may perform a channel access procedure prior to transmitting the physical signal.

[0060] The RF unit 32 converts the signal received via the antenna unit 31 into a baseband signal (downconvert) by quadrature demodulation, removing unwanted frequencies. The fractional part is removed. The RF unit 32 outputs the processed analog signal to the baseband unit.

[0061] The baseband section 33 receives the analog signal input from the RF section 32. It converts to a digital signal. The baseband section 33 removes the portion corresponding to the Cyclic Prefix (CP) from the converted digital signal, and then processes the signal from which the CP has been removed. A Fast Fourier Transform (FFT) is performed to extract the signal in the frequency domain.

[0062] The baseband section 33 performs an inverse fast Fourier transform (IFFT) on the data to generate OFDM symbols, adds CP to the generated OFDM symbols, and base The baseband unit 33 generates a digital signal for the band and converts the baseband digital signal into an analog signal. The baseband unit 33 outputs the converted analog signal to the RF unit 32.

[0063] The RF section 32 uses a low-pass filter to remove unwanted frequency components from the analog signal input from the baseband section 33 and upconverts the analog signal to the carrier frequency. The signal is converted and transmitted via the antenna unit 31. The RF unit 32 may also have a function to control the transmission power. The RF unit 32 is also referred to as the transmission power control unit.

[0064] One or more serving cells (or component carriers, downlink component carriers, uplink component carriers) may be configured for terminal device 1.

[0065] Each of the serving cells set for terminal device 1 is PCell(Primary cell, It may be any of the following: Primary Cell, PSCell (Primary SCG cell), or SCell (Secondary Cell).

[0066] A PCell is a serving cell included in an MCG (Master Cell Group). A PCell is a cell that performs the initial connection establishment procedure or the connection re-establishment procedure by terminal device 1. (The cells that have been treated.)

[0067] PSCells are serving cells included in the SCG (Secondary Cell Group). This is a serving cell that is accessed randomly by terminal device 1.

[0068] SCell may be included in either MCG or SCG.

[0069] A serving cell group (cell group) is a designation that includes at least an MCG and an SCG. A serving cell group may include one or more serving cells (or component carriers). One or more serving cells (or component carriers) included in a serving cell group may be operated by carrier aggregation.

[0070] One or more downlink BWPs may be set for each serving cell (or downlink component carrier). One or more uplink BWPs are configured for each component carrier. That's fine.

[0071] Of the one or more downlink BWPs set for a serving cell (or downlink component carrier), one downlink BWP becomes the active downlink BWP. It may be set (or one downlink BWP may be activated). Of the one or more uplink BWPs set for a moving cell (or uplink component carrier), one uplink BWP is set as the active uplink BWP. This may be done (or one uplink BWP may be activated).

[0072] PDSCH, PDCCH, and CSI-RS may be received on the active downlink BWP. Terminal device 1 may attempt to receive PDSCH, PDCCH, and CSI-RS on the active downlink BWP. PUCCH and PUSCH are transmitted on the active uplink BWP. It may be done. Terminal device 1 performs PUCCH and PUSCH on the active uplink BWP. You may send this. Active downlink BWP and active uplink BWP are also collectively referred to as active BWP.

[0073] PDSCH, PDCCH, and CSI-RS are downlink BWPs other than active downlink BWPs. It does not need to be received in an inactive downlink (BWP). Terminal device 1 is active In a BWP downlink that is not a BWP, PDSCH, PDCCH, and CSI-RS are received. There is no need to try to trust it. PUCCH and PUSCH are not active uplink BWP. It is not necessary to transmit in an inactive uplink BWP. Terminal device 1 does not need to transmit PUCCH and PUSCH in an uplink BWP that is not an active uplink BWP. Inactive downlink BWP and inactive uplink BWP is collectively referred to as inactive BWP.

[0074] Downlink BWP switching is performed by one active serving cell. Deactivate the downlink BWP and the in-service of the serving cell. This is the procedure for activating one of the active downlink BWPs. The BWP switching of the downlink may be controlled by the BWP field included in the downlink control information. The BWP switching of the downlink may also be controlled based on parameters of the higher layer. good.

[0075] Uplink BWP switching is used to deactivate one active uplink BWP and activate one of the inactive uplink BWPs that is not the active one. The replacement may be controlled by the BWP field included in the downlink control information. Uplink The BWP switching of links may be controlled based on parameters at a higher level.

[0076] Two or more of the one or more downlink BWPs set for a serving cell A downlink BWP does not necessarily have to be set as the active downlink BWP. For a serving cell, one downlink BWP may be active at a given time.

[0077] Two or more of the one or more uplink BWPs set for a serving cell An uplink BWP does not necessarily have to be set as the active uplink BWP. For a serving cell, one uplink BWP may be active at any given time.

[0078] Figure 6 is a schematic block diagram showing an example configuration of a terminal device 1 according to one aspect of this embodiment. As shown in Figure 6, the terminal device 1 includes at least one or all of a wireless transceiver unit (physical layer processing unit) 10 and a higher layer processing unit 14. The wireless transceiver unit 10 includes at least part or all of an antenna unit 11, an RF unit 12, and a baseband unit 13. The higher layer processing unit 14 includes at least part or all of a media access control layer processing unit 15 and a wireless resource control layer processing unit 16.

[0079] The wireless transceiver 10 includes at least part or all of the wireless transmission unit 10a and the wireless reception unit 10b. Here, the baseband unit 13 included in the wireless transmission unit 10a and the wireless reception unit The device configuration of the baseband section 13 included in 10b may be the same or different. Furthermore, the device configuration of the RF unit 12 included in the wireless transmission unit 10a and the RF unit 12 included in the wireless reception unit 10b may be the same or different. The device configuration of the antenna unit 11 and the antenna unit 11 included in the wireless receiver unit 10b are the same. It's fine if it's different, or it's fine if it's not.

[0080] For example, the wireless transmission unit 10a may generate and transmit a PRACH baseband signal. For example, the wireless transmission unit 10a may generate and transmit a PUCCH baseband signal. The wireless transmission unit 10a may generate and transmit a PUSCH baseband signal. For example, the wireless transmission unit 10a may generate and transmit a PUCCH DMRS baseband signal. For example, the wireless transmission unit 10a may generate and transmit a PUSCH DMRS baseband signal. For example, the wireless transmission unit 10a may generate and transmit a UL PTRS baseband signal. For example, the wireless transmission unit The signal unit 10a may generate and transmit the SRS baseband signal. Generating a number may also mean generating an SRS series.

[0081] For example, the wireless receiver 10b may receive and demodulate a PDSCH. For example, the wireless receiver 10b may receive and demodulate a PDCCH. For example, the wireless receiver 10b may receive a PBCH, Demodulation is also possible. For example, the wireless receiver 10b may receive a synchronization signal. For example, The line receiver 10b may receive PDSCH DMRS. For example, the wireless receiver 10b may receive PDCCH DMRS. For example, the wireless receiver 10b may receive CSI-RS. For example, the wireless receiver 10b may receive DL PTRS.

[0082] The upper layer processing unit 14 outputs the uplink data (transport block) to the wireless transceiver unit 10 (or wireless transmission unit 10a). The upper layer processing unit 14 performs processing at the MAC layer, packet data integration protocol layer, wireless link control layer, and RRC layer.

[0083] The media access control layer processing unit 15, which is part of the upper layer processing unit 14, performs MAC layer processing.

[0084] The wireless resource control layer processing unit 16, which is part of the upper layer processing unit 14, performs RRC layer processing. The line resource control layer processing unit 16 processes various setting information / parameters (RRC parameters) of the terminal device 1. The wireless resource control layer processing unit 16 manages the RRC messages received from the base station device 3. Set the RRC parameters based on the message.

[0085] The wireless transceiver unit 10 (or wireless transmission unit 10a) performs processing such as modulation and encoding. The wireless transceiver unit 10 (or wireless transmission unit 10a) modulates and encodes the uplink data. A physical signal is generated by generating a baseband signal (conversion to a time-continuous signal) and transmitted to the base station device 3. The wireless transceiver 10 (or wireless transmitter 10a) transmits the physical signal It may be placed on a BWP (Active Uplink BWP) and transmitted to the base station device 3.

[0086] The wireless transceiver unit 10 (or wireless receiver unit 10b) performs processing such as demodulation and decoding. The wireless transceiver 10 (or wireless receiver 30b) may receive a physical signal in a BWP (active downlink BWP) of a serving cell. The wireless receiver 10b) separates, demodulates, and decodes the received physical signal, and the decoded information The output is sent to the upper layer processing unit 14. The wireless transceiver unit 10 (wireless receiver unit 10b) transmits the physical signal. Prior to this, the channel access procedure may be performed.

[0087] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by quadrature demodulation (down convert) and removes unwanted frequency components. 12 outputs the processed analog signal to the baseband section 13.

[0088] The baseband section 13 converts the analog signal input from the RF section 12 into a digital signal. The baseband section 13 then calculates the CP (Cyclic Prefix) from the converted digital signal. The unwanted portion is removed, and a Fast Fourier Transform (FFT) is performed on the signal from which the CP has been removed to extract the signal in the frequency domain.

[0089] The baseband section 13 performs an inverse fast Fourier transform (IFFT) on the uplink data to generate an OFDM symbol, and then 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.

[0090] The RF section 12 uses a low-pass filter to remove unwanted frequency components from the analog signal input from the baseband section 13 and upconverts the analog signal to the carrier frequency. The signal is converted and transmitted via the antenna unit 11. The RF unit 12 may also have a function to control the transmission power. The RF unit 12 is also referred to as the transmission power control unit.

[0091] The following will explain physical signals (signals).

[0092] Physical signals are a collective term for downlink physical channels, downlink physical signals, uplink physical channels, and uplink physical channels. Physical channels are a collective term for downlink physical channels and uplink physical channels. Physical signals are a collective term for downlink physical signals and uplink physical signals.

[0093] An uplink physical channel may correspond to a set of resource elements that transmit information generated in the higher layer. An uplink physical channel may also be a physical channel used in an uplink component carrier. An uplink physical channel may be transmitted by terminal device 1. An uplink physical channel may be received by base station device 3. In a wireless communication system according to one aspect of this 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)

[0094] PUCCH transmits Uplink Control Information (UCI) It may be used. PUCCH may be transmitted to deliver, transmit, or convey uplink control information. Uplink control information may be mapped to PUCCH. Terminal device 1 may transmit PUCCH on which uplink control information is mapped. Base station Device 3 may receive a PUCCH containing uplink control information.

[0095] Uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) is channel state information (CSI), schedule This includes at least some or all of the Scheduling Request (SR) and HARQ-ACK (Hybrid Automatic Repeat Request ACKnowledgement) information.

[0096] Channel status information is also referred to as channel status information bits or channel status information sequences. Scheduling requests are also referred to as scheduling request bits or scheduling request sequences. HARQ-ACK information is also referred to as HARQ-ACK information bits or HARQ-ACK information sequences.

[0097] HARQ-ACK information may include at least a HARQ-ACK corresponding to a transport block (TB). A HARQ-ACK may indicate an ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to a transport block. An ACK may indicate that the transport block has been decoded successfully. A NACK may indicate that the transport block has not been decoded successfully. HARQ-ACK information may include a HARQ-ACK codebook containing one or more HARQ-ACK bits.

[0098] A transport block is a sequence of information bits delivered from a higher layer. Here, the sequence of information bits is also called a bit sequence. Here, the transport block may be delivered from the UL-SCH (UpLink - Shared Channel) of the transport layer.

[0099] In some cases, the HARQ-ACK for the transport block is referred to as the HARQ-ACK for the PDSCH. There is a match. In this case, “HARQ-ACK for PDSCH” refers to the transport included in PDSCH. Shows the HARQ-ACK for the block.

[0100] HARQ-ACK may represent an ACK or NACK corresponding to a single CBG (Code Block Group) contained within a transport block.

[0101] The scheduling request is for UL-SCH for new transmission. It may be used to request a source. The scheduling request bit may be used to indicate either a positive SR or a negative SR. When the scheduling request bit indicates a positive SR, it is also referred to as "a positive SR is transmitted". A positive SR is used by terminal device 1 for initial transmission of UL-SCH This may indicate that the resources are requested. A positive SR may indicate that the scheduling request is triggered by a higher layer. A positive SR may be transmitted when the scheduling request is instructed by a higher layer. When the scheduling request bit indicates a negative SR, it is also referred to as "a negative SR is sent." A negative SR may indicate that the terminal device 1 does not request UL-SCH resources for initial transmission. A negative SR may indicate that the upper layer has not triggered a scheduling request. A negative SR may be propagated when the upper layer has not instructed a scheduling request.

[0102] Channel status information may include at least some or all of the Channel Quality Indicator (CQI), Precoder Matrix Indicator (PMI), and Rank Indicator (RI). CQI is an indicator related to the quality of the propagation path (e.g., propagation intensity) or the quality of the physical channel, and PMI is related to the precoder. These are related metrics. RI is a metric related to the transmit rank (or transmit layer count).

[0103] Channel status information is an indicator of the reception status of at least the physical signal (e.g., CSI-RS) used for channel measurement. The value of channel status information is used for channel measurement. The channel measurement may be determined by the terminal device 1 based on the reception conditions assumed by at least the physical signals used. The channel measurement may include interference measurement.

[0104] PUCCH may support the PUCCH format. PUCCH may be a set of resource elements used to transmit the PUCCH format. PUCCH may contain the PUCCH format. PUCCH may be transmitted with a certain PUCCH format. The PUCCH format may be interpreted as a format of information. Alternatively, the PUCCH format may be interpreted as a set of information set into a certain format of information.

[0105] PUSCH provides either or both of the transport block and the uplink control information. It may be used for transmission. The transport block may be placed in PUSCH. i. Transport blocks delivered by UL-SCH may be placed in PUSCH. Uplink control information may be placed in PUSCH. Terminal device 1 is transport block A PUSCH may be transmitted containing either or both of the uplink control information. The base station device 3 may receive a PUSCH containing either or both a transport block and uplink control information.

[0106] PRACH may be transmitted to convey the random access preamble. Device 1 may transmit PRACH. Base station device 3 may receive PRACH. column x u,v (n) is x u,v (n) = x u(mod(n+C v ,L RA Defined by )), where x u It belongs to the ZC (Zadoff Chu) series. Also, x u is x u =exp(-jπui(i+1) / L RA ) by It may also be defined as follows: j is the imaginary unit. Also, π is the ratio of a circle's circumference to its diameter. Also, C v This corresponds to the cyclic shift of the PRACH series. Also, L RA This corresponds to the length of the PRACH sequence. Also, L RA It is 839 or 139. Also, i is from 0 to L RA -1 It is an integer within the range of . Also, u is the series index for the PRACH series.

[0107] For each PRACH opportunity, 64 random access preambles are defined. The access preamble is a cyclic shift C in the PRACH family. v , and identified based on the sequence index u for the PRACH sequence. 64 random access prians identified Each bull may be assigned an index.

[0108] Uplink physical signals may correspond to a set of resource elements. Uplink physical signals do not have to be used to transmit information generated in the upper layer. However, uplink physical signals may be used to transmit information generated in the physical layer. Uplink physical signals may also be physical signals used in the uplink component carrier. Terminal device 1 may transmit uplink physical signals. Base station device 3 may receive uplink physical signals. In a wireless communication system according to one aspect of this 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)

[0109] UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0110] The set of antenna ports for a PUSCH (DMRS associated with a PUSCH, DMRS included in a PUSCH, DMRS corresponding to a PUSCH) is given based on the set of antenna ports for the PUSCH. It may be obtained. For example, the set of antenna ports for a DMRS for a PUSCH may be the same as the set of antenna ports for the PUSCH.

[0111] The transmission of a PUSCH and the transmission of a DMRS for said PUSCH are indicated by a single DCI format. This may be done (or scheduled). A PUSCH and the DMRS for said PUSCH may be collectively referred to as PUSCH. Sending a PUSCH may be done by sending a PUSCH and the DMRS for said PUSCH.

[0112] The propagation path of a pusher may be estimated from the DMRS for that pusher.

[0113] The set of antenna ports for DMRS for PUCCH (DMRS related to PUCCH, DMRS included in PUCCH, DMRS corresponding to PUCCH) may be the same as the set of antenna ports for PUCCH. stomach.

[0114] The transmission of PUCCH and the transmission of DMRS for said PUCCH are indicated by a single DCI format. It may (or may be triggered). Mapping of PUCCH to resource element (resource element mapping), and to the DMRS resource element for the PUCCH. One or both of the mappings may be given by a single PUCCH format. The PUCCH and the DMRS for said PUCCH may be collectively referred to as PUCCH. Sending a PUCCH This may involve sending a PUCCH and a DMRS for the PUCCH.

[0115] The propagation path of PUCCH may be estimated from the DMRS for the PUCCH.

[0116] The downlink physical channel may correspond to a set of resource elements that transmit information generated in the upper layer. The downlink physical channel may also be a physical channel used in the downlink component carrier. Base station device 3 may transmit the downlink physical channel. Terminal device 1 may receive the downlink physical channel. In a wireless communication system according to one aspect of this embodiment, at least some or all of the following may be included. The downlink physical channel of the section may be used. ·PBCH(Physical Broadcast Channel) ·PDCCH (Physical Downlink Control Channel) ·PDSCH(Physical Downlink Shared Channel)

[0117] PBCH may be transmitted to transmit either or both MIB (Master Information Block) and / or physical layer control information, where physical layer control information is information generated at the physical layer. MIB is a set of parameters placed in BCCH (Broadcast Control Channel), which is a logical channel of the MAC layer. The BCCH is a channel of the transport layer. It is placed on a BCH. The BCH may be placed (mapped) on a PBCH. Terminal device 1 may receive a PBCH on which the MIB and / or physical layer control information are placed. Base station device 3 may transmit a PBCH on which the MIB and / or physical layer control information are placed. stomach.

[0118] For example, the physical layer control information may consist of 8 bits. The physical layer control information may include at least some or all of the following 0A to 0D. 0A) Wireless frame bit 0B) Half Wireless Frame (Half System Frame, Half Frame) Bits 0C)SS / PBCH Block Index Bit 0D) Subcarrier offset bit

[0119] The wireless frame bits are used to indicate the wireless frame transmitted by the PBCH (the wireless frame containing the slot from which the PBCH is transmitted). The wireless frame bits consist of 4 bits. The wireless frame bits may consist of 4 bits from a 10-bit wireless frame indicator. For example, the wireless frame indicator may be used to identify wireless frames from index 0 to index 1023.

[0120] 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 the radio frame in which the PBCH is transmitted. Here, the half-radio frame may consist of five subframes. Alternatively, the half-radio frame may consist of the first five subframes of the ten subframes included in the radio frame. Alternatively, the half-radio frame may consist of the last five subframes of the ten subframes included in the radio frame.

[0121] The SS / PBCH block index bits are used to indicate the SS / PBCH block index. The SS / PBCH block index bits consist of 3 bits. The SS / PBCH block index bits may consist of 3 bits from a 6-bit SS / PBCH block index indicator. The SS / PBCH block index indicator may be used to identify SS / PBCH blocks from index 0 to index 63.

[0122] The subcarrier offset bit is used to indicate the subcarrier offset. The subcarrier offset may be used to indicate the difference between the leading subcarrier to which the PBCH is mapped and the leading subcarrier to which the control resource set at index 0 is mapped.

[0123] PDCCH may be transmitted to transmit Downlink Control Information (DCI). Downlink Control Information may be placed (mapped) in the PDCCH. Device 1 may receive a PDCCH containing downlink control information. Base station device 3, A PDCCH containing downlink control information may be transmitted.

[0124] Downlink control information may be transmitted in DCI format. The DCI format may be interpreted as the format of the downlink control information. Furthermore, the DCI format is... This may be interpreted as a set of downlink control information set in a certain downlink control information format.

[0125] DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats. The uplink DCI format is DCI Format 0_0 and DCI Format 0_1 ​​are general terms. Downlink DCI format is a general term for DCI Format 1_0 and DCI Format 1_1.

[0126] DCI format 0_0 is used at least for scheduling PUSCHs placed in a cell. DCI format 0_0 is part of the fields 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)

[0127] A DCI format specific field is a DCI format that includes the DCI format specific field. -The mat may indicate whether it is an uplink DCI format or a downlink DCI format. In other words, the DCI format-specific field may be included in both the uplink DCI format and the downlink DCI format. Here, the DCI format-specific field included in DCI format 0_0 may indicate 0.

[0128] The frequency domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of frequency resources for PUSCH.

[0129] The time domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of time resources for PUSCH.

[0130] The frequency hopping flag field indicates whether frequency hopping is applied to PUSCH. It may be used to indicate whether or not something is true.

[0131] The MCS field included in DCI format 0_0 is the modulation scheme for PUSCH, and , may be used to indicate at least one or both of the target coding rates. The target coding rate is the target code for the transport block placed in PUSCH. The coding rate may also be the size of the transport block (TBS) placed in the PUSCH, which is one of the target coding rate and the modulation scheme for the PUSCH. The decision may be based on both factors.

[0132] DCI format 0_0 includes fields used in CSI requests. It's not necessary.

[0133] DCI format 0_0 does not need to include a carrier indicator field. In other words, the serving cell to which the uplink component carrier to which the PUSCH scheduled by DCI format 0_0 is located belongs is DCI format 0_0 The PDCCH is located in the same serving cell as the uplink component carrier. It is also possible. Terminal device 1 detects DCI format 0_0 on a downlink component carrier of a serving cell and, based on that, sends a PUSCH scheduled by DCI format 0_0 to the uplink component of the serving cell. It may be acceptable to consider placing them on the carrier.

[0134] DCI format 0_0 does not have to include the BWP field. Here DCI format The format 0_0 may be a DCI format that schedules a PUSCH without changing the active uplink BWP. The terminal device 1 may recognize that it will transmit the PUSCH without switching the active uplink BWP based on detecting the DCI format 0_0 used for scheduling the PUSCH.

[0135] DCI format 0_1 ​​is used at least for scheduling PUSCHs placed in a cell. DCI format 0_1 ​​is used for part of fields 2A to 2H or It consists of at least all of the above. 2A) DCI Format Specific Fields 2B) Frequency Domain Resource Allocation Field 2C) Time-domain resource allocation field for uplink 2D) Frequency Hopping Flag Field 2E) MCS Field 2F) CSI request field 2G) BWP field 2H) Carrier indicator field

[0136] The DCI format specific field included in DCI format 0_1 ​​may indicate 0.

[0137] The frequency domain resource allocation field included in DCI format 0_1 ​​may be used to indicate the allocation of frequency resources for PUSCH.

[0138] The time domain resource allocation field included in DCI format 0_1 ​​may be used to indicate the allocation of time resources for PUSCH.

[0139] The MCS field included in DCI format 0_1 ​​is the modulation scheme for PUSCH, and / or may be used to indicate at least some or all of the target coding rate.

[0140] The BWP field of DCI format 0_1 ​​is used in the schedule according to DCI format 0_1. It may be used to indicate the uplink BWP on which the scheduled PUSCH is located. In other words, DCI format 0_1 ​​may be accompanied by a change in the active uplink BWP. Terminal device 1 may recognize the uplink BWP on which the PUSCH is located based on detecting the DCI format 0_1 ​​used for scheduling the PUSCH.

[0141] DCI format 0_1, which does not include the BWP field, indicates a change in the active uplink BWP. It may also be a DCI format that schedules PUSCH without BWP. Terminal device 1 is DCI format 0_1 ​​used for scheduling PUSCH, and BWP Based on the detection of DCI format D0_1 which does not include a field, it may be recognized that the PUSCH should be sent without switching the active uplink BWP.

[0142] DCI format 0_1 ​​includes a BWP field, but terminal device 1 is DCI format If the BWP switching function using 0_1 is not supported, the BWP field may be ignored by terminal device 1. In other words, terminal device 1 that does not support the BWP switching function , DCI format 0_1 ​​used for scheduling in PUSCH, and BWP format Based on the detection of DCI format 0_1 ​​including the field, it may be recognized that the PUSCH should be transmitted without switching the active uplink BWP. Here, terminal device 1 If the terminal device supports the BWP switching function, the RRC layer's function information reporting procedure may report that "Terminal device 1 supports the BWP switching function."

[0143] The CSI request field is used to instruct the CSI report.

[0144] If DCI format 0_1 ​​includes a carrier indicator field, then The rear indicator field is located on the upward link component carrier where the PUSCH is positioned. It may be used to indicate A. DCI format 0_1 ​​carrier indicator If no field is included, the uplink component carrier where PUSCH is located is, A PDCCH containing DCI format 0_1, which is used for scheduling the PUSCH, is configured. It may be the same as the uplink component carrier. If the number of uplink component carriers set on terminal device 1 in a serving cell group is 2 or more (when uplink carrier aggregation is operated in a serving cell group), the scheduler of PUSCH placed in that serving cell group The carrier indicator field included in DCI format 0_1 ​​used in the game The number of bits may be 1 or more (for example, 3 bits). If the number of uplink component carriers set on terminal device 1 in a serving cell group is 1 (i.e., uplink carrier aggregation is not operated in a serving cell group), the schedule of PUSCH placed in that serving cell group Carrier indicator field included in DCI format 0_1 ​​used for ing The number of bits may be 0 bits (or the DCI format 0_1 ​​used for scheduling PUSCH placed in a given serving cell group may not include a carrier indicator field).

[0145] DCI format 1_0 is used at least for scheduling PDSCHs located in a given cell. DCI format 1_0 is used less than some or all of 3A through 3F It is composed of including the above. 3A) DCI Format Specific Fields 3B) Frequency Domain Resource Allocation Field 3C) Time Domain Resource Allocation Field 3D) MCS Field 3E) PDSCH to HARQ feedback timing indicator field 3F) PUCCH resource indicator field

[0146] The DCI format specific field included in DCI format 1_0 may indicate 1.

[0147] The frequency domain resource allocation field included in DCI format 1_0 may be used to indicate the allocation of frequency resources for PDSCH.

[0148] The time domain resource allocation field included in DCI format 1_0 may be used to indicate the allocation of time resources for PDSCH.

[0149] The MCS field included in DCI format 1_0 is the modulation scheme for PDSCH, and , may be used to indicate at least one or both of the target coding rates. The target coding rate is the target code for the transport block placed in the PDSCH. The coding rate may also be the target coding rate. The size of the transport block (TBS) placed in the PDSCH is determined by the target coding rate and the modulation scheme for the PDSCH. The decision may be based on both factors.

[0150] The PDSCH_HARQ feedback timing instruction field is set to 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 be used to indicate a set.

[0151] The PUCCH resource reference field may be a field that indicates the index of one or more PUCCH resources included in the PUCCH resource set. The PUCCH resource set may contain one or more PUCCH resources.

[0152] DCI format 1_0 does not need to include a carrier indicator field. In other words, the downlink component carrier on which a PDSCH scheduled by DCI format 1_0 is located may be the same as the downlink component carrier on which a PDCCH containing DCI format 1_0 is located. Based on the detection of DCI format 1_0 in a certain downlink component carrier, terminal device 1 places the PDSCH scheduled by DCI format 1_0 in the downlink component It may be acceptable to consider placing them on the carrier.

[0153] DCI format 1_0 does not have to include the BWP field. Here DCI format The format 1_0 may be a DCI format that schedules the PDSCH without changing the active downlink BWP. The terminal device 1 may recognize that it can receive the PDSCH without switching the active downlink BWP, based on detecting the DCI format 1_0 used for scheduling the PDSCH.

[0154] DCI format 1_1 is used for scheduling PDSCHs located in a given cell. DCI format 1_1 is used for less than some or all of 4A to 4I. It is composed of including the above. 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 Indicator Field 4G)PUCCH resource instruction field 4H) BWP Field 4I) Carrier Indicator Field

[0155] The DCI format specific field included in DCI format 1_1 may indicate 1.

[0156] The frequency domain resource allocation field included in DCI format 1_1 may be used to indicate the allocation of frequency resources for PDSCH.

[0157] The time domain resource allocation field included in DCI format 1_1 may be used to indicate the allocation of time resources for PDSCH.

[0158] The MCS field included in DCI format 1_1 is the modulation scheme for PDSCH, and This may be used to indicate at least one or both of the target coding rates.

[0159] If DCI format 1_1 includes a PDSCH_HARQ feedback timing indicator field, the PDSCH_HARQ feedback timing indicator field extends from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH. This may be used to indicate the offset. If DCI format 1_1 does not include the PDSCH_HARQ feedback timing indicator field, the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH may be determined by a parameter in the upper layer.

[0160] The PUCCH resource reference field may be a field that indicates the index of one or more PUCCH resources included in the PUCCH resource set.

[0161] The BWP field of DCI format 1_1 is used in the schedule according to DCI format 1_1. It may be used to indicate the downlink BWP on which the scheduled PDSCH is located. In other words, DCI format 1_1 may be accompanied by a change in the active downlink BWP. Terminal device 1 may recognize the downlink BWP on which the PDSCH is located based on detecting the DCI format 1_1 used for scheduling the PDSCH.

[0162] DCI format 1_1, which does not include the BWP field, indicates a change in the active downlink BWP. It may also be a DCI format that schedules PDSCH without BWP. Terminal device 1 is a DCI format 1_1 used for scheduling PDSCH, and BWP Based on detecting DCI format 1_1 that does not include a field, active downlink It is acceptable to recognize that the PDSCH is being received without switching the link BWP.

[0163] DCI format 1_1 includes a BWP field, but terminal device 1 is DCI format If the BWP switching function by 1_1 is not supported, the BWP field may be ignored by terminal device 1. In other words, terminal device 1 that does not support the BWP switching function , DCI format 1_1 used for scheduling PDSCH, and BWP format Based on the detection of DCI format 1_1 including the field, it may be recognized that the PDSCH can be received without switching the active downlink BWP. Here, terminal device 1 If the terminal device supports the BWP switching function, the RRC layer's function information reporting procedure may report that "Terminal device 1 supports the BWP switching function."

[0164] If DCI format 1_1 includes a carrier indicator field, the carrier The rear indicator field is the downlink component carrier where the PDSCH is located. It may be used to indicate A. DCI format 1_1 carrier indicator If no field is included, the downlink component carrier where the PDSCH is located is, A PDCCH containing DCI format 1_1, which is used for scheduling the PDSCH, is configured. It may be the same as the downlink component carrier. If the number of downlink component carriers set on terminal device 1 in a serving cell group is 2 or more (when downlink carrier aggregation is operated in a serving cell group), the scheduler of the PDSCH placed in that serving cell group The carrier indicator field included in DCI format 1_1 used in the game The number of bits may be 1 or more (for example, 3 bits). If the number of downlink component carriers set on terminal device 1 in a serving cell group is 1 (i.e., downlink carrier aggregation is not operated in a serving cell group), the scheduler of the PDSCH placed in that serving cell group Carrier indicator field included in DCI format 1_1 used for ing The number of bits may be 0 bits (or placed in the serving cell group) The DCI format 1_1 used for scheduling the PDSCH does not necessarily need to include a carrier indicator field.

[0165] PDSCH may be transmitted to transmit transport blocks. PDSCH may be used to transmit transport blocks delivered from DL-SCH. PDSCH may be used to transmit transport blocks. Transport blocks may be placed on PDSCH. Transport blocks corresponding to DL-SCH are on PDSCH. They may be arranged. Base station device 3 may transmit PDSCH. Terminal device 1 may receive PDSCH.

[0166] Downlink physical signals may correspond to a set of resource elements. Downlink physical signals do not need to carry information generated in the upper layers. Downlink physical signals may be physical signals used in the downlink component carrier. Downlink physical signals may be transmitted by base station device 3. Downlink physical signals may be transmitted by terminal device 1. In a wireless communication system according to one aspect of this embodiment, at least some or all of the following downlink physical signals may be used. ·Synchronization signal (SS) ·DL DMRS(DownLink DeModulation Reference Signal) ·CSI-RS(Channel State Information-Reference Signal) ·DL PTRS(DownLink Phase Tracking Reference Signal)

[0167] The synchronization signal may be used to synchronize the terminal device 1 in either the frequency domain or the time domain of the downlink, or both. The synchronization signal is a general term for PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal).

[0168] Figure 7 shows an example of the configuration of an SS / PBCH block according to one aspect of this embodiment. In Figure 7, the horizontal axis is the time axis (OFDM symbol index l sym ) and the vertical axis represents the frequency domain. Block 700 also shows the set of resource elements for PSS. Block 720 shows a set of resource elements for SSS. Also, four blocks Blocks 710, 711, 712, and 713 represent a set of resource elements for a PBCH and a DMRS for the PBCH (DMRS associated with the PBCH, DMRS contained within the PBCH, and DMRS corresponding to the PBCH).

[0169] As shown in Figure 7, the SS / PBCH block contains PSS, SSS, and PBCH. The SS / PBCH block also contains four consecutive OFDM symbols. The SS / PBCH block contains 240 subcarriers. PSS is the 57th to 183rd subcarriers in the first OFDM symbol. It is placed on the subcarrier. SSS is from the 57th to the 183rd OFDM symbol in the third OFDM symbol. It is placed in the nth subcarrier. Subcarriers 1 through 56 of the first OFDM symbol may be set to zero. Subcarriers 184 through 240 of the first OFDM symbol may be set to zero. Subcarriers 49 through 56 of the third OFDM symbol may be set to zero. Subcarriers 184 through 192 of the third OFDM symbol may be set to zero. The PBCH is placed in subcarriers 1 through 240 of the second OFDM symbol, where a DMRS for the PBCH is not placed. The PBCH is placed in subcarriers 1 through 48 of the third OFDM symbol, where a DMRS for the PBCH is not placed. The PBCH is placed in subcarriers 193 through 240 of the third OFDM symbol, where a DMRS for the PBCH is not placed. The PBCH is placed on the subcarriers from the 1st to the 240th subcarrier of the 4th OFDM symbol, where a DMRS for the PBCH is not located.

[0170] The antenna ports for PSS, SSS, PBCH, and DMRS for PBCH may be the same.

[0171] The PBCH whose symbol is transmitted at a given antenna port may be estimated by a DMRS for the PBCH located in the slot to which the PBCH is mapped, and which is included in the SS / PBCH block containing the PBCH.

[0172] DL DMRS is a general term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.

[0173] The set of antenna ports for DMRS for PDSCH (DMRS associated with PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) is given based on the set of antenna ports for said PDSCH. It may be obtained. In other words, the set of antenna ports for a DMRS for a PDSCH may be the same as the set of antenna ports for the PDSCH.

[0174] The transmission of PDSCH and the transmission of DMRS for said PDSCH are indicated by a single DCI format. It may be done (or scheduled). The PDSCH and the DMRS for the PDSCH may be collectively referred to as the PDSCH. Transmitting a PDSCH may be done by transmitting the PDSCH and the DMRS for the PDSCH.

[0175] The propagation path of a PDSCH may be estimated from the DMRS for that PDSCH. A set of resource elements on which the signal is transmitted, and a DMRS symbol for the PDSCH. If the set of resource elements on which the symbol is transmitted belongs to the same Precoding Resource Group (PRG), the PDSCH on which the symbol of that PDSCH is transmitted at a given antenna port may be estimated by the DMRS for that PDSCH.

[0176] The antenna port for the DMRS for PDCCH (DMRS associated with PDCCH, DMRS included in PDCCH, DMRS corresponding to PDCCH) may be the same as the antenna port for PDCCH.

[0177] PDCCH may be inferred from the DMRS for that PDCCH. In other words, the propagation path of a PDCCH may be inferred from the DMRS for that PDCCH. If the symbol of a certain PDCCH is transmitted, A set of elements and a resource on which the DMRS symbol for the PDCCH is transmitted. When the same precoder is applied (or is assumed to be applied) to a set of elements, the symbol of that PDCCH at a certain antenna port is transmitted. The PDCCH may be estimated by the DMRS for the PDCCH.

[0178] BCH (Broadcast Channel), UL-SCH (Uplink-Shared Channel), and DL-SCH (Downlink-Shared Channel) are transport channels. Transport channels define the relationship between physical layer channels and MAC layer channels (also called logical channels). do.

[0179] The BCH in the transport layer is mapped to the PBCH in the physical layer. In other words, the transport layer Transport blocks passing through the BCH are delivered to the PBCH in the physical layer. The UL-SCH in the transport layer is mapped to the PUSCH in the physical layer. In other words, transport blocks passing through the UL-SCH in the transport layer are delivered to the PUSCH in the physical layer. Also, the DL-SCH in the transport layer is mapped to the PDSCH in the physical layer. In other words, the DL-SCH in the transport layer The transport blocks that pass through are delivered to the PDSCH in the physical layer.

[0180] Each serving cell may be provided with one UL-SCH and one DL-SCH. BCH may be provided to PCell. BCH does not have to be provided to PSCell or SCell.

[0181] At the MAC layer, HARQ (Hybrid Automatic Repeat request) control is performed for each transport block.

[0182] BCCH (Broadcast Control Channel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is MIB. Alternatively, it is a channel in the RRC layer used to transmit system information. Also, CCCH The Common Control Channel transmits a common RRC message across multiple terminal devices. It may be used for the purpose of... Here, CCCH is, for example, a terminal device that is not connected to RRC. It may be used for 1. Also, DCCH (Dedicated Control Channel) is a terminal device It may be used at least to send a dedicated RRC message to 1. Here, DCCH This may be used, for example, for terminal device 1 that is connected via RRC.

[0183] Higher-level parameters common to multiple terminal devices 1 are also called common higher-level parameters. Here, common higher-level parameters may be defined as parameters specific to a serving cell. Here, parameters specific to a serving cell are parameters common to the terminal devices (e.g., terminal devices 1-A, B, C) on which the serving cell is set. It's okay to use "ta".

[0184] For example, common upper-layer parameters may be included in the RRC message delivered to BCCH. For example, common upper-layer parameters may be included in the RRC message delivered to DCCH. .

[0185] Among the upper-level parameters, those that differ from common upper-level parameters are also called dedicated upper-level parameters. Here, dedicated upper-level parameters can provide dedicated RRC parameters for terminal device 1-A on which a serving cell is configured. In other words, dedicated RRC parameters are upper-level parameters that can provide unique settings for each of terminal devices 1-A, B, and C.

[0186] The BCCH of a logical channel is mapped to the BCH of the transport layer or the DL-SCH. For example, a transport block containing MIB information is delivered to the BCH of the transport layer. Also, a transport block containing system information that is not an MIB is delivered to the transport layer. It is delivered to DL-SCH in the T layer. Also, CCCH is mapped to DL-SCH or UL-SCH. Transport blocks mapped to CCCH are delivered to DL-SCH or UL-SCH. Similarly, DCCH is mapped to DL-SCH or UL-SCH. In other words, transport blocks mapped to DCCH are delivered to DL-SCH or UL-SCH.

[0187] An RRC message contains one or more parameters managed in the RRC layer. These parameters are also referred to as RRC parameters. For example, RRC Messages may include MIBs. RRC messages may also include system information. Furthermore, RRC messages may include messages corresponding to CCCHs. RRC messages may also include messages corresponding to DCCHs. RRC messages containing messages corresponding to DCCHs are also referred to as individual RRC messages.

[0188] Higher-level parameters are parameters included in RRC parameters or MAC CE (Medium Access Control Control Element). Lameter is a message corresponding to MIB, system information, CCCH, and DCCH. This refers to the parameters included in MAC CE. The parameters included in MAC CE are sent via the MAC CE (Control Element) command.

[0189] The procedures performed by terminal device 1 include at least some or all of the following 5A to 5C. 5A) Cell search 5B) Random access 5C) Data communication

[0190] Cell search is a procedure used by terminal device 1 to synchronize with a cell in the time domain and frequency domain and to detect its physical cell identity. In other words, terminal device 1 may use cell search to synchronize with a cell in the time domain and frequency domain and detect its physical cell identity.

[0191] The PSS series is assigned based on at least the physical cell ID. The SSS series is assigned based on at least the physical cell ID.

[0192] SS / PBCH block candidates indicate resources that are permitted (possible, reserved, configured, specified, or potentially) to send SS / PBCH blocks.

[0193] A set of SS / PBCH block candidates in a half-wireless frame is also called an SS burst set. An SS burst set is a transmission window. It is also called the SS transmission window or the Discovery Reference Signal transmission window. An SS burst set is a general term that includes at least the first SS burst set and the second SS burst set.

[0194] The base station device 3 transmits SS / PBCH blocks of one or more indices at predetermined intervals. The terminal device 1 may detect at least one of the SS / PBCH blocks of the one or more indices and attempt to decode the PBCH contained in the SS / PBCH block.

[0195] Random access is a procedure that includes at least part or all of message 1, message 2, message 3, and message 4.

[0196] Message 1 is the procedure for sending PRACH by terminal device 1. Terminal device 1, Based on an index of SS / PBCH block candidates detected through cell search, a PRACH is sent in one PRACH opportunity selected from among one or more PRACH opportunities. Each PRACH opportunity is defined based on at least time-domain and frequency-domain resources. It can be done.

[0197] Terminal device 1 transmits one random access preamble selected from among the PRACH opportunities corresponding to the index of the SS / PBCH block candidate in which the SS / PBCH block is detected. .

[0198] Message 2 is a DCI message with a CRC (Cyclic Redundancy Check) that has been scrambled by terminal device 1 using RA-RNTI (Random Access - Radio Network Temporary Identifier). This is a procedure to attempt to detect format 1_0. Terminal device 1 receives a control resource set based on the MIB contained in the PBCH contained in the SS / PBCH block detected based on cell search. In the resources indicated based on the settings of the search area set, the DCI format Attempts to detect PDCCH containing the . Message 2 is also called a random access response. To be called.

[0199] Message 3 is included in DCI format 1_0 detected by the Message 2 procedure. Send a PUSCH scheduled by a random access response grant. This is the procedure. Here, random access response grant The grant is indicated by the MAC CE included in the PDSCH scheduled according to the DCI format 1_0.

[0200] PUSCH, which is scheduled based on random access response grants, Message 3 PUSCH, or simply PUSCH. Message 3 PUSCH includes a contention resolution identifier (MAC CE). The contention resolution identifier MAC CE is a collision Includes the resolution ID.

[0201] The retransmission of message 3 PUSCH is scheduled in DCI format 0_0 with a scrambled CRC based on TC-RNTI (Temporary Cell - Radio Network Temporary Identifier).

[0202] Message 4 is a procedure to attempt to detect DCI format 1_0 with a CRC scrambled based on either C-RNTI (Cell - Radio Network Temporary Identifier) ​​or TC-RNTI. Terminal device 1 schedules based on the DCI format 1_0. The PDSCH to be received may contain a collision resolution ID.

[0203] Data communication is a general term encompassing both downlink communication and uplink communication.

[0204] In data communication, terminal device 1 attempts to detect PDCCH in resources identified based on the control resource set and the search area set (monitor PDCCH, PDCCH (Monitor).

[0205] A control resource set is a set of resources consisting of a predetermined number of resource blocks and a predetermined number of OFDM symbols. In the frequency domain, a control resource set may consist of continuous resources (non-interleaved mapping) or distributed resources. It may be configured more complexly (interleaver mapping).

[0206] The set of resource blocks that constitute the control resource set may be indicated by a higher-level parameter. The number of OFDM symbols that constitute the control resource set may also be indicated by a higher-level parameter.

[0207] Terminal device 1 attempts to detect PDCCH in the search area set. Here, the search area set Attempting to detect PDCCH in the search domain set may also mean attempting to detect candidate PDCCHs in the search domain set, or attempting to detect DCI formats in the search domain set. It may be either a good idea or an attempt to detect PDCCH in the control resource set. Alternatively, you could try to detect candidates for PDCCH in the control resource set. Alternatively, an attempt may be made to detect the DCI format in the control resource set.

[0208] A search space set is defined as a set of candidate PDCCHs. A search space set may be a CSS (Common Search Space) set or a USS (UE-specific Search Space) set. Terminal device 1 may be part 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. We attempt to detect PDCCH candidates in all cases.

[0209] The Type 0PDCCH common search region set is used as the common search region set for index 0. It is permissible to stay there. The Type 0PDCCH common search area set is the common search area at index 0. It's fine as a set.

[0210] The CSS set is a collective term for the Type 0 PDCCH common search area set, Type 0a PDCCH common search area set, Type 1 PDCCH common search area set, Type 2 PDCCH common search area set, and Type 3 PDCCH common search area set. The USS set is the UE individual PDCCH search area set. It is also called by this name.

[0211] A set of search domains is associated with (contains, corresponds to) a set of control resources. The index of the control resource set associated with the search domain set may be indicated by a higher-level parameter.

[0212] For a given set of search domains, some or all of 6A through 6C may be represented by at least the upper layer parameters. 6A) PDCCH monitoring periodicity 6B) PDCCH monitoring pattern within a slot 6C) PDCCH monitoring offset

[0213] A monitoring occasion for a certain set of search regions occurs when that set of search regions The leading OFDM symbol of the associated control resource set may correspond to the OFDM symbol in which it is located. The monitoring opportunity for a search region set may correspond to the resources of the control resource set associated with the search region set, starting from the leading OFDM symbol of that control resource set. The monitoring opportunity for the search region set is given based on at least some or all of the monitoring interval of the PDCCH, the monitoring pattern of the PDCCH in the slot, and the monitoring offset of the PDCCH.

[0214] Figure 8 shows an example of a monitoring opportunity for a search area set according to one aspect of this embodiment. In Figure 8, search area set 91 and search area set 92 are set in primary cell 301, search area set 93 is set in secondary cell 302, and search area set 94 is set in secondary cell 303.

[0215] In Figure 8, the white monochrome blocks in primary cell 301 represent search region set 91, the black monochrome blocks in primary cell 301 represent search region set 92, the blocks in secondary cell 302 represent search region set 93, and the blocks in secondary cell 303 represent search region set 94.

[0216] The monitoring interval for the search area set 91 is set to 1 slot, and the monitoring of the search area set 91 The offset is set to slot 0, and the monitoring pattern for the search area set 91 is [1,0 It is set to [0,0,0,0,0,1,0,0,0,0,0,0]. In other words, it searches The monitoring opportunities in search area set 91 correspond to the first OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each slot.

[0217] The monitoring interval for the search area set 92 is set to 2 slots, the monitoring offset for the search area set 92 is set to 0 slots, and the monitoring pattern for the search area set 92 is [1,0 It is set to [0,0,0,0,0,0,0,0,0,0,0,0,0]. In other words, it is searched The monitoring opportunities in search area set 92 correspond to the leading OFDM symbol (OFDM symbol #0) in each even-numbered slot.

[0218] The monitoring interval for the search area set 93 is set to 2 slots, the monitoring offset for the search area set 93 is set to 0 slots, and the monitoring pattern for the search area set 93 is [0,0 It is set to [0,0,0,0,0,1,0,0,0,0,0,0]. In other words, it searches The monitoring opportunities in search area set 93 correspond to the 8th OFDM symbol (OFDM symbol #7) in each of the even-numbered slots.

[0219] The monitoring interval for the search area set 94 is set to 2 slots, the monitoring offset for the search area set 94 is set to 1 slot, and the monitoring pattern for the search area set 94 is [1,0 It is set to [0,0,0,0,0,0,0,0,0,0,0,0,0]. In other words, it is searched The monitoring opportunities in search area set 94 correspond to the leading OFDM symbol (OFDM symbol #0) in each odd-numbered slot.

[0220] The Type 0PDCCH common search region set may be used for DCI formats with a Cyclic Redundancy Check (CRC) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier).

[0221] The Type 0aPDCCH common search area set is SI-RNTI (System Information-Radio Network). CRC (Cyclic Redundancy Check) scrambled by a Temporary Identifier It may be used, at least, for DCI formats that involve sequences.

[0222] The Type 1 PDCCH common search region set may be used for DCI formats with CRC sequences scrambled by RA-RNTI (Random Access-Radio Network Temporary Identifier) ​​and / or CRC sequences scrambled by TC-RNTI (Temporary Cell-Radio Network Temporary Identifier).

[0223] The Type 2 PDCCH common search region set may be used for the DCI format with a CRC sequence scrambled by P-RNTI (Paging-Radio Network Temporary Identifier).

[0224] The Type 3 PDCCH common search region set is used for the DCI format with a CRC sequence scrambled by C-RNTI (Cell-Radio Network Temporary Identifier). That's good too.

[0225] The UE individual PDCCH search region set may be used for the DCI format with a CRC sequence scrambled by C-RNTI.

[0226] In downlink communication, terminal device 1 detects the downlink DCI format. The detected downlink DCI format is used at least for resource allocation on the PDSCH. The detected downlink DCI format is also called the downlink assignment. Terminal device 1 attempts to receive the PDSCH. Based on the PUCCH resource shown in DCI format, the HARQ-ACK corresponding to the PDSCH (HARQ-ACK corresponding to the transport block contained in the PDSCH) is reported to the base station device 3.

[0227] In uplink communication, terminal device 1 detects the uplink DCI format. The DCI format that is provided will be used at least for resource allocation in PUSCH. The detected uplink DCI format is also referred to as an uplink grant. Terminal device 1 transmits the PUSCH.

[0228] In configured grant scheduling, PUSCH is used in the scheduler The uplink grant to be set is configured for each transmission cycle of the PUSCH. When the PUSCH is scheduled using the uplink DCI format, some or all of the information indicated by the uplink DCI format may be indicated by the uplink grant configured for the scheduling.

[0229] A UL slot may be a slot composed of UL symbols. A special slot may be a slot composed of UL symbols, flexible symbols, and DL symbols. A DL slot may be a slot composed of DL symbols.

[0230] The UL symbol may be an OFDM symbol set or indicated for the uplink in time-division duplexing. The UL symbol may be an OFDM symbol set or indicated for PUSCH, or PUCCH, PRACH, or SRS. The UL symbol may be provided by the upper-layer parameter tdd-UL-DL-ConfigurationCommon. The UL symbol may also be provided by the upper-layer parameter tdd-UL-DL-ConfigurationDedicated. . UL slots may be provided by the higher-layer parameter tdd-UL-DL-ConfigurationCommon. UL slots may be provided by the higher-layer parameter tdd-UL-DL-ConfigurationDedicated Therefore, it may be provided.

[0231] The DL symbol may be an OFDM symbol set or indicated for the downlink in time-division duplexing. The DL symbol may be an OFDM symbol set or indicated for PDSCH or PDCCH. The DL symbol may have the upper layer parameter tdd-UL -DL-ConfigurationCommon may provide the DL symbol, which is a higher-layer parameter. The DL slot may be provided by tdd-UL-DL-ConfigurationDedicated. DL slots may also be provided by the higher-layer parameter tdd-UL-DL-ConfigurationCommon. good.

[0232] A flexible symbol may be an OFDM symbol within a certain period that is not set or indicated as a UL symbol or a DL symbol. The period may be the period given by the higher-level parameter dl-UL-TransmissionPeriodicity. Good. The flexible symbol is for PDSCH, PDCCH, PUSCH, PUCCH, or PRACH. This may be set to or indicated by an OFDM symbol.

[0233] The upper-level parameter tdd-UL-DL-ConfigurationCommon may be a parameter that sets each of one or more slots to either an UL slot, a DL slot, or a special slot. The upper-level parameter tdd-UL-DL-ConfigurationDedicated is tdd-UL-DL-ConfigurationCommon may be a common upper-layer parameter, while tdd-UL-DL-ConfigurationDedicated may be a dedicated upper-layer parameter.

[0234] PUSCH-Config may be a dedicated upper-layer parameter. PUSCH-ConfigCommon may be a common upper-layer parameter. PUSCH-Config is set for each BWP for PUSCH transmission. PUSCH-Config may include multiple higher-layer parameters related to PUSCH transmission. PUSCH-Config may also be UE-specific settings. For example, terminal devices in a single cell. The PUSCH-Config for terminal devices 1B and 1C, or the multiple higher-level parameters included in PUSCH-Config, may be different. PUSCH-ConfigCommon is PUSCH It may be configured for each BWP for transmission. PUSCH-ConfigCommon is a multiple PUSCH transmission related It may also include higher-level parameters. PUSCH-ConfigCommon is a cell-specific setting. This is also acceptable. For example, terminal devices 1A, 1B, and 1C in one cell. The PUSCH-ConfigCommon for this purpose may be common. For example, the PUSCH-ConfigCommon may be provided by system information.

[0235] Repeat transmissions may be applied to PUSCH. For example, repeat transmissions may be applied to PUSCH scheduled by DCI. Also, the configured uplink Even if repeated transmissions are applied to PUSCH scheduled by a grant, The PUSCH repeat type consists of PUSCH repeat type A and PUSCH repeat type B. Either is acceptable. The PUSCH repeat type is set by the higher-level parameters. The PUSCH repeat type may be based on the DCI format. For example, the first PUSCH repeat for PUSCH scheduled by DCI format 0_1 The type may differ from the second PUSCH repeat type for PUSCH scheduled by DCI format 0_2.

[0236] The number of repetitions for repeated PUSCH transmissions may be set by higher-level parameters. For example, the upper-layer parameter numberOfRepetitions is used for repeated PUSCH transmissions. The parameter may include the number of repetitions. PUSCH repetition corresponding to PUSCH repetition type A In repetition transmission, the number of repetitions for the PUSCH repeat transmission may be determined by the value of the upper-layer parameter numberOfRepetitions. In PUSCH repeat type A, C-RNTI, Furthermore, a PUSCH instructed to be sent in DCI format with a CRC scrambled by either MCS-C-RNTI or CS-RNTI may have a number of repetitions equal to numberOfRepetitions if numberOfRepetitions exists in the resource allocation table. If a PUSCH-TimeDomainResourceAllocation contains one or more PUSCH-Allocations, the higher-level parameter numberOfRepetitions may be set for each PUSCH-Allocation. Also, a PUSCH-TimeDomainResourceAllocation is called a resource allocation table. It may also be called by this name.

[0237] The upper layer parameter push-AggregationFactor is used for repeated PUSCH transmissions. A parameter indicating the number of repetitions may also be used. PUSCH repetition corresponding to PUSCH repetition type A In transmission, the number of repetitions for the PUSCH repetition transmission may be determined by the value of the upper-layer parameter push-AggregationFactor. In PUSCH repetition type A, a PUSCH instructed to be transmitted by DCI format with CRC scrambled by C-RNTI and either MCS-C-RNTI or CS-RNTI is defined as having push-AggregationFactor set. In this case, the number of repetitions may be equal to push-AggregationFactor. push-AggregationFactor may be set for PUSCH-Config.

[0238] The number of repetitions corresponding to PUSCH Repeat Type A is the slot for PUSCH Repeat transmission. It may be a number of TBs. Also, one TB may be repeated in one or more slots. PUSCH repetitions sent in different slots are assigned the same OFDM symbol. This may also apply.

[0239] In PUSCH repeat transmissions corresponding to PUSCH repeat type B, nominal repeats are used. It may also be based on actual repetition.

[0240] The frequency hopping scheme may be set by higher-layer parameters. The higher-layer parameters frequencyHopping, and frequencyHoppingDCI-0-1, frequencyHoppingDCI-0-2 may be parameters that provide the frequency hopping scheme for PUSCH. For example, frequencyHoppingDCI-0-2 in PUSCH-Config is used for frequency for PUSCH A frequency hopping method corresponding to wavenumber hopping may be set. Alternatively, a frequency hopping method corresponding to frequency hopping for PUSCH may be set by frequencyHopping in PUSCH-Config. Also, in configuredGrantConfig, frequency A frequency hopping method may be set for frequency hopping for PUSCH transmissions configured by cyHopping. The frequency hopping method may be intra-slot frequency hopping, inter-slot frequency hopping, or inter-repetition frequency hopping. The frequency hopping interval for intra-slot frequency hopping may be one slot or less. The frequency hopping interval for inter-slot frequency hopping may be one slot or multiple slots. The frequency hopping interval for inter-repetition frequency hopping may be based on nominal repetitions.

[0241] For example, the hopping interval may be provided by a higher-level parameter. For example, this higher-level parameter may be a dedicated higher-level parameter.

[0242] Whether or not to perform frequency hopping may be determined at least based on the DCI. Whether or not to apply frequency hopping for a PUSCH instructed to be transmitted by the DCI format may be determined at least based on the value of the frequency hopping flag field included in the DCI format. Whether or not to apply frequency hopping for a PUSCH instructed to be transmitted by the random access response grant may be determined at least based on the value of the frequency hopping flag field included in the random access response grant. This may be determined. For example, frequency hopping for PUSCH may be performed at least on the basis that the value of the frequency hopping flag field is 1.

[0243] Intra-slot frequency hopping is suitable for push transmissions in one or more slots. It may be used. For example, in-slot frequency hopping is used for PUSCH repeated transmissions. It may be applied. For PUSCH to which in-slot frequency hopping is applied, 1 or The arrangement may be switched for each OFDM symbol. For example, for a PUSCH to which intra-slot frequency hopping is applied, the resource block may be switched for each OFDM symbol. The placement may be switched between being the first hop or the second hop. Furthermore, if in-slot frequency hopping is performed for PUSCH, the first hop and the second hop may be switched for each OFDM symbol. The difference between the position of the first resource block and the position of the first resource block of the second hop is RB offset This is also acceptable. RB offset This may be set by higher-level parameters. The one or more OFDM symbols may be no more than one slot. The one or more OFDM symbols may be half the number of OFDM symbols for PUSCH in one slot. In-set frequency hopping is applied to PUSCHs corresponding to PUSCH repetition type A. That's good too.

[0244] Inter-slot frequency hopping is applied to push transmissions in multiple slots. This is also good. For PUSCH to which inter-slot frequency hopping is applied, each slot is limited by 1 The arrangement of resource blocks may be switched. For example, inter-slot frequency hopping may be applied to repeated PUSCH transmissions. Also, when inter-slot frequency hopping is performed for PUSCH, the arrangement of resource blocks may be switched for each slot to either be the first hop or the second hop. For example, in a given slot, slot index n μ s,f If n is an even number, a PUSCH transmission in a given slot may correspond to a first hop. For example, in a given slot, slot index n μ s,f If the number is odd, the PUSCH transmission in that slot may correspond to the second hop. Slot frequency hopping is performed using PUSCH repeat type A and PUSCH repeat type This may be applied to PUSCH corresponding to any of type B.

[0245] Inter-repetition frequency hopping is applied to PUSCH repetitions corresponding to type B. This may be done. For a PUSCH to which frequency hopping between repetitions is applied, nominal repetitions The first and second hops may be switched based on the response.

[0246] At least two transmission methods may be supported for PUSCH. For example, codebook-based transmission may be one of the transmission methods for PUSCH. For example, non-codebook-based transmission may be one of the transmission methods for PUSCH. The upper layer parameter may provide either codebook transmission or non-codebook transmission. For example, if 'codebook' is set for the upper layer parameter, terminal device 1 may be configured for codebook transmission. For example If 'nonCodebook' is set for the upper-layer parameter, terminal device 1 may be configured to send non-codebook messages. The upper-layer parameter may be txConfig. The upper-layer parameter may be usage. For example, if the upper-layer parameter is not set... In this case, terminal device 1 does not need to expect that it will be scheduled according to either DCI format 0_1 ​​or DCI format 0_2. If PUSCH is scheduled according to DCI format 0_0, the transmission of PUSCH may be based on at least one antenna port.

[0247] In codebook transmissions, PUSCH may be scheduled by DCI format. The DCI format may be any of DCI format 0_0, DCI format 0_1, or DCI format 0_2. In codebook transmissions, PUSCH may be set to be transmitted semi-statically. Terminal device 1 may determine one or more precoders for PUSCH transmission. For example, the precoder may be determined based on at least some or all of the SRI (SRS Resource indicator), TPMI (Transmitted Precoding Matrix Indicator), and Transmission rank (or rank). For example, the SRI may be the DCI fee of one or two SRS resource indicators. These may be provided by a `ResourceIndicator`. For example, TPMI may be provided by a DCI field of one or two precoding information fields. For example, transmit rank may be provided by a DCI field of layer count (transmit layer count). For example, TPMI and transmit rank may be provided by one or two “precoding information and layer count” DCI fields. SRI may be provided by a first upper-layer parameter. TPMI and transmit rank may be provided by a second upper-layer parameter. The first upper-layer parameter may be srs-ResourceIndicator or srs-ResourceIndicator2. The second upper layer parameter may be precodingAndNumberOfLayers or precodingAndNumberOfLayers2.

[0248] The SRS resource set applied to PUSCH may be determined based on higher-level parameters. PUSCH is scheduled according to DCI format 0_1 ​​or DCI format 0_2. It may also be set to srs-ResourceSetToAddModList or srs-ResourceSetToAddModeListDCI-0-2. The higher-level parameter may also be a higher-level parameter set in SRS-Config.

[0249] If the upper-level parameter usage is set to 'codebook', then one or two SRS resource sets will be srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2 The higher-level parameter usage may be set in the higher-level parameter SRS-ResourceSet.

[0250] When one SRS resource set is configured, the SRI and TPMI may be given by the DCI field. The DCI field may be one SRS resource instruction and one “precoding information and layer count” field. The TPMI is used to instruct the precoder. It may be used for this purpose. The precoder may be applied across v layers {0,..., v-1}. If multiple SRS resources are configured, one SRS resource may be selected by the SRI. A precoder may correspond to one SRS resource. The transmit precoder (precoder) may be selected from the codebook (uplink codebook). For example, codeb The codebook may have the number of antenna ports. The number of antenna ports may be the same as the higher-layer parameter nrofSRS-Ports. The higher-layer parameter txConfig is set to 'codebook'. If this is the case, terminal device 1 may have at least one SRS resource configured. The SRI may also relate to the transmission of SRS resources identified by the SRI. For example, The SRI may also be related to a recent transmission of an SRS resource identified by the SRI, and the SRS resource may precede the PDCCH that transmits the SRI.

[0251] If two SRS resource sets are configured, one or two SRIs and one or two TPMIs are , or may be given by the DCI field. For example, the DCI field may be the SRS resource index The DCI field indicated and the DCI field for “Precoding Information and Number of Layers” may be either one or both. Terminal device 1 may apply the indicated SRI and TPMI to one or more PUSCH iterations. For example, terminal device 1 may apply the SRS resource set of a PUSCH iteration to Therefore, the indicated SRI and TPMI may be applied to one or more PUSCH iterations. Each TPMI This is to instruct the precoder based on the code points of the SRS resource set instruction. It may be used. The precoder may be applied to layers 0 through v-1. The precoder may correspond to SRS resources selected by SRI. Multiple SRS resources The value may be set for the applicable SRS resource set. For example, if multiple SRS resources are configured for the applicable SRS resource set, the precoder may correspond to the SRS resource selected by the corresponding SRI. In one or two TPMIs, the transmit precoder (precoder) may be selected from the codebook (uplink codebook). When two SRIs are specified, terminal device 1 may expect that the number of antenna ports for the two specified SRS resources is the same. The number of resources may be provided by a higher-level parameter. If two SRS resources are configured and the higher-level parameter usage is set to 'codebook', terminal device 1 does not expect that different numbers of SRS resources are configured in the two SRS resource sets. That's good too.

[0252] In codebook transmission, terminal device 1 may determine a codebook subset. For example, the codebook subset may be determined based at least on TPMI. The codebook subset may also be determined in response to the reception of a certain upper-layer parameter, which is codebookSubset or codebookSubsetDCI-0-2. It is also acceptable to set a certain upper-level parameter to 'fullyAndPartialAndNonCoherent', 'partialAndNonCoherent', or 'nonCoherent'. If the higher-level parameter ul-FullPowerTransmission is set to 'fullpowerMode2', Furthermore, if 'AndNonCoherent' is set to a certain upper-level parameter, and the SRS resource set for the codebook has at least one SRS resource with 4 ports and 2 ports If it includes at least one SRS resource with ports, the codebook subset associated with a 2-port SRS resource (an SRS resource with 2 ports) may be 'nonCoherent'. The highest transmission rank (or maximum rank) is determined by the upper layer parameter maxRank, or the upper layer parameter The meter maxRankDCI-0-2 may be set for PUSCH.

[0253] Terminal device 1 may report UE capability. If terminal device 1 reports UE capability for sending 'partialAndNonCoherent', terminal device 1 does not need to expect that a codebook subset with 'fullyAndPartialAndNonCoherent' will be set.

[0254] If terminal device 1 reports UE capability for 'nonCoherent' transmission, terminal device 1 does not need to expect that a subset of codebooks with 'fullyAndPartialAndNonCoherent' or 'partialAndNonCoherent' will be configured.

[0255] The higher-level parameter nrofSRS-Ports for the codebook is set for the SRS antenna port. If it is indicated that the maximum number of to is 2, terminal device 1 will indicate that 'partialAndNonCoherent' is You do not need to expect that the higher-layer parameters to be set will be configured. The higher-layer parameters may be codebookSubset or codebookSubsetForDCI-Format0-2. The number of antenna ports may be determined by the higher-layer parameter nrofSRS-Ports.

[0256] In codebook submission, one SRS resource may be determined from the SRS resource set based on the SRI, except when the first upper-level parameter is set to 'fullpowerMode2'. The maximum number of SRS resources to be set for codebook submission may be 2. The higher-level parameter may be ul-FullPowerTransmission. DCI may instruct the transmission of SRS resources. For example, if aperiodic SRS is configured, DCI may The SRS request field may instruct (trigger) the transmission of a non-periodic SRS resource. Terminal device 1 does not need to expect that the first upper-layer parameter, which is set to 'fullpowerMode1', and the second upper-layer parameter, which is set to 'fullAndPartialAndNonCoherent', will be set.

[0257] Terminal device 1 uses DCI format or SRS as instructed by higher-layer parameters. PUSCH may be transmitted using the same antenna port as one or more SRS ports (antenna ports) in the source. For example, the SRS port may be the same antenna port as the PUSCH transmission. It may be the same. The DMRS antenna port may be determined according to the DMRS port ordering.

[0258] If multiple SRS resources are configured by an SRS resource set, terminal device 1 will have the same You can expect the upper-level parameter nrofSRS-Ports, which has a value, to be set for these SRS resources. The SRS resource set is the upper-level parameter nrofSRS-Ports, which has 'codebook' set. The upper-level parameter SRS-ResourceSet may also have a meter usage.

[0259] When 'fullpowerMode2' is set for the upper-level parameter, the SRS resource set for the codebook will have one or more SRS ports with the same or different numbers. The SRS resource may be set. 'fullpowerMode2' is set for the upper layer parameters. If set, and if multiple SRS resource sets are configured in the SRS resource set, up to two different spatial relations may be configured for all SRS resources in the SRS resource set for the codebook. If 'fullpowerMode2' is set for the upper-level parameter, up to two or four SRS resources The - may be set in the SRS resource set for the codebook. Also, the maximum Eight SRS resources may be configured in a single SRS resource set. The SRS resource set for a codebook may be an SRS resource set with the higher-level parameter usage set to 'codebook'.

[0260] For non-codebook submissions, PUSCH is DCI format 0_0, DCI format 0_1, or It may also be scheduled according to DCI format 0_2. For non-codebook transmissions, PUSCH may be set quasi-statically. Terminal device 1 sets the precoder and transmission rank of PUSCH. The SRI may be determined based on the SRI. For example, when multiple SRS resources are configured, the SRI may be given by one or two SRS resource directives in the DCI. For example, the SRI may be given by a higher-level parameter. The SRS resource set applied to PUSCH may be defined by an entry in the higher-level parameter. The higher-level parameter may be srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2. stomach.

[0261] Terminal device 1 may use one or more SRS resources for SRS transmission. The maximum number of SRS resources in a single SRS resource set is transmitted to base station device 3 as UE capability. It is also permissible. The SRS resource may be configured for simultaneous transmission of the same OFDM symbol. i. The maximum number of SRS resources to be configured for simultaneous transmission of the same OFDM symbol in a single SRS resource set, the maximum number of SRS resources, and the UE capability may be. Multiple SRS resources transmitted simultaneously may occupy the same resource block. Each SRS resource may have one SRS port configured. One or two SRS resource sets... The SRI may be set in the upper-level parameter srs-ResourceSetToAddModList, which is accompanied by the upper-level parameter usage, where 'nonCodebook' is set in the upper-level parameter SRS-ResourceSet. If two SRS resource sets are set, one or two SRIs may be given by the DCI field. The DCI field may be the DCI field of two SRS resource directives.

[0262] Terminal device 1 may apply the instructed SRI to one or more PUSCH repetitions. For example, according to the SRS resource set of the PUSCH repetition, terminal device 1 may apply the instructed SRI to one Alternatively, it may be applied to multiple PUSCH iterations. Set for non-codebook submission. The maximum number of SRS resources per SRS resource set may be 4. The maximum number of SRS resources per SRS resource set configured for transmission is 8, even if Good. Each of the one or two SRIs indicated is an SRS resource identified by the SRI. This may also relate to the latest transmission of the SRS resources in the set. The SRS transmission may precede the PDCCH that transmits the SRI. A different number of SRS resources may be set in the two SRS resource sets. Terminal device 1 does not need to expect this.

[0263] Multiple PDCCH candidates (PDCCH candidate(s)) are selected based on the upper-level parameters. When related to a set of search regions, one PDCCH candidate is used. This one PDCCH candidate has two Among the PDCCH candidates, the one that starts earlier may also be selected. The upper-level parameter may be searchSpaceLinking.

[0264] For non-codebook transmissions, the UE may compute a precoder. For example, a precoder used for SRS transmissions may be computed based on a measurement of an NZP CSI-RS resource. One NZP CSI-RS resource may be configured for the SRS resource set for non-codebooks. For example, the SRS resource set for non-codebooks may be an SRS resource set with a higher-level parameter set to 'nonCodebook'.

[0265] If an aperiodic SRS resource set is configured, the NZP-CSI RS may be indicated via the SRS request field. The SRS request field may be one of the DCI fields in DCI format 0_1, DCI format 0_2, DCI format 1_1, and DCI format 1_2. The first upper layer parameter is aperiodic SRS. The triggering state may indicate the association between the SRS resource set. The first upper-layer parameter, the SRS resource to be triggered, srs-ResourceSetId, and csi-RS may be set in the upper-layer parameter SRS-ResourceSet. The upper-layer parameter csi-RS may indicate NZP-CSI-RS-ResourceId. The upper-layer parameter SRS-ResourceSet related to the SRS request may be defined by an entry in a list that is an upper-layer parameter. The list that is an upper-layer parameter may be the upper-layer parameter srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2. Terminal device 1 does not need to expect to update the precoding information (SRS precoding information). For example, if the gap from the last OFDM symbol of the received non-periodic NZP-CSI-RS resource to the first OFDM symbol of the non-periodic SRS transmission is 42 OFDM symbols or less, terminal device 1 will not update the precoding information You don't need to expect updates.

[0266] If an aperiodic SRS is configured for an aperiodic NZP CSI-RS resource, the presence of the associated CSI-RS may be indicated by the SRS request field. If the value of is not '00', AND the scheduling DCI is cross-carrier scheduling If not used for cross-carrier scheduling or cross-bandwidth part scheduling, the presence of CSI-RS is not detected in the SRS request. This may be indicated by a field.

[0267] If a periodic or semi-permanent SRS resource set is configured, the NZP-CSI-RS-ResourceId for measurement may be indicated via the higher-level parameter associatedCSI-RS.

[0268] Terminal device 1 may perform one-to-one mapping. One-to-one mapping may be mapping from SRI to DMRS port and mapping from SRI to corresponding PUSCH layer {0,..., v-1}. PUSCH layers from 0 to v-1 may be provided. v may be the number of layers. The number of layers may be set by upper layer parameters. Terminal device 1 may map PUSCH to the same as SRS port. It may also transmit using the same antenna port. For example, the SRS port in the SRS resource indicated by SRI may be indexed as pi = 1000 + i. For example, the SRS port in the (i+1)th SRS resource may be pi. Also, the (i+1)th SRS resource The SRS port in the source may be indexed as pi. pi is 1000 + i. That's fine.

[0269] In non-codebook submissions, spatial relation information (info) for SRS resources and the higher-level parameter SRS-ResourceSet for SRS resource sets are used. Terminal device 1 expects both the upper-level parameter associatedCSI-RS and the other parameter to be set. Waiting is not necessary. Spatial relation information may be determined by higher-level parameters. Spatial relation information may also be the higher-level parameter `spatialRelationInfo`. (Non-codebook) During transmission, if at least one SRS resource is configured in an SRS resource set with a higher-level parameter set to 'nonCodebook', terminal device 1 may be scheduled using DCI format 0_1 ​​or DCI format 0_2.

[0270] One or more SRS resource sets (Sounding Reference Signal resource sets) are, This may be set by the higher-level parameters. The first higher-level parameter may be SRS-ResourceSet or SRS-PosResourceSet. Each SRS resource set contains K SRS resources A value may be set. K may be an integer greater than or equal to 1. The maximum value of K may be indicated by UE capability. The maximum value of K may be 16. The adaptability of the SRS resource set may be set in a second upper-layer parameter. The second upper-layer parameter is usage. It is acceptable. For example, if 'beamManagement' is set for the second higher-level parameter. If so, in a given time instance, one or more SRS resource sets One SRS resource may be sent in each case. Multiple SRS resources may be sent simultaneously. For example, different SRS resources of the same BWP In this context, multiple SRS resources with the same time-domain behavior may be transmitted simultaneously.

[0271] In aperiodic SRS, to select at least one from the set of SRS resources, At least one DCI field may be used.

[0272] One or more SRS parameters may be set by a first upper-level parameter. For example, one or more SRS parameters may be set semi-statically by a second higher-level parameter. The first higher-level parameter may be SRS-Resource or SRS-PosResource. The second higher-level parameter may determine the SRS resource configuration identity. The second higher-level parameter may be srs-ResourceId or SRS-PosResourceId. One or more SRS parameters are , some or all of the top-level parameters from the 1st to the 20th. 1 or more SRS The parameters have the same function as some or all of the top-level parameters from the 1st to the 20th. Meters may be included. One or more SRS parameters are determined based on the DCI format. It may also be used as a fixed value.

[0273] Number of SRS ports: N SRS ap This may be determined by a third upper layer parameter. The positional parameter may be nrofSRS-Ports. The SRS port may be an antenna port. For example, the SRS port may be an antenna port for SRS. The time domain behavior of the configuration may be determined by a fourth upper-level parameter. The fourth upper-level parameter may be resourceType. For example, time domain The domain operation may be periodic, semi-persistent, or aperiodic. The period and offset are determined by the fifth upper layer parameter. This may be done. The period and offset may be at the slot level. Periodic SRS resource For SRS resources, or for semi-persistent SRS resources, a period and offset may be defined. The fifth upper-layer parameter is periodityAndOffset-p or periodityAndOffset-sp. This is acceptable. For example, it is not expected that multiple SRS resources with different periods will be configured within the same SRS resource set. If 'aperiodic' is set for the fourth upper layer parameter, the slot level offset will be set for the sixth upper layer parameter. Therefore, it may be defined as follows. The sixth upper layer parameter may be slotOffset. If 'aperiodic' is set for the fourth upper layer parameter, the available slot offset A list of slot offset values ​​may be defined by a seventh upper-layer parameter. The seventh upper-layer parameter may be AvailableSlotOffset. The available slot offset may be a list of different available slot offset values ​​from 0 to 4. If the reference slot is n+k, the available slot offset may be the offset from n+k slots to a certain slot. In a certain slot, a non-periodic SRS resource set A transmission may be sent. Slot n may be the slot of the triggering DCI. The triggering DCI may trigger the transmission of an aperiodic SRS. Slot k may be determined by a sixth upper layer parameter. The seventh upper layer parameter may be set to up to four values. In an aperiodic SRS resource set, the slot level offset may be defined by the sixth upper layer parameter for each SRS resource.

[0274] Furthermore, the number of OFDM symbols in the SRS resource (number of consecutive OFDM symbols) N SRS symb The start OFDM symbol (start position in the time domain) of the SRS resource may be defined by an eighth upper-layer parameter. The eighth upper-layer parameter may be resourceMapping. Also, the repetition factor R fac This is set by the 8th upper layer parameter. This is also acceptable. If the number of repetitions is not set by the 8th upper layer parameter, the repetition will The number of times may be the same as the number of OFDM symbols in the SRS resource. The SRS bandwidth is B SRS and C SRS This may be defined by a ninth upper layer parameter. If the upper-level parameters are not set, B SRS This may be 0. The ninth upper layer parameter may be freqHopping. The partial frequency sounding factor and the starting resource block index for partial frequency sounding may be defined by the tenth upper layer parameter. The tenth upper layer parameter may be FreqScalingFactor and StartRBIndex. The frequency domain position is the eleventh upper layer. It may be defined by a parameter. The configurable shift may be defined by a 12th upper layer parameter. The 11th upper layer parameter may be freqDomainPosition. The 12th upper layer parameter may be freqDomainShift.

[0275] The first OFDM symbol count may be set by an eighth upper-layer parameter. The second OFDM symbol count may be determined based on the DCI format. If the first OFDM symbol count is set and the second OFDM symbol count is given, the OFDM symbol count in the SRS resource may correspond to the second OFDM symbol count.

[0276] The first number of iterations may be set by the eighth upper layer parameter. The number of returns may be determined based on the DCI format. The first number of repetitions is set. If a second number of repetitions is determined, the second number of repetitions may be used, and the first number of repetitions may not be used.

[0277] Furthermore, the comb number (transmit comb number) may be defined by a 13th upper layer parameter. The 13th upper layer parameter may be transmissionComb. The comb number may be 2, 4, 8, and 16. The cyclic shift (cyclic shift initial value) may be defined by a 14th upper layer parameter. The 14th upper layer parameter is cyclicShift-n2, cyclicShift-n4, cyclicShift-n8, cyclicShift-n16, and Any of the above may be included. The 14th upper layer parameter may be included in the 13th upper layer parameter. The comb offset (transmit comb offset) may be defined by the 15th upper layer parameter. The 15th upper layer parameter may be any of combOffset-n2, combOffset-n4, combOffset-n8, and combOffset-n16. The data may be included in the 13th upper-level parameter. The SRS sequence ID may be defined by the 16th upper-level parameter. The 16th upper-level parameter may be sequenceId.

[0278] The first cyclic shift (or initial cyclic shift value) may be set by the 14th upper layer parameter. The second cyclic shift (or cyclic shift The initial cyclic shift value may be determined based on the DCI format. If a first cyclic shift initial value is set and a second cyclic shift initial value is determined, the second cyclic shift initial value may be used and the first cyclic shift initial value may not be used. If a first cyclic shift initial value is set and a second cyclic shift initial value is determined, the sum of the first and second cyclic shift initial values ​​may be used.

[0279] The third cyclic shift (or initial cyclic shift value) is one or more values. It may be determined based on the following: One or more values ​​are OFDM thins in SRS resources. This may also be the number of volts (the number of OFDM symbols that make up the SRS resource). One or more values. This may be the number of repetitions (number of repetitions for SRS). One or more values , or the maximum number of cyclic shifts. That is, the third cyclic shift ( Alternatively, the cyclic shift initial value) may be determined based on some or all of the number of OFDM symbols in the SRS resource, the number of repetitions, and the maximum number of cyclic shifts.

[0280] When the first cyclic shift initial value is set and the third cyclic shift initial value is determined, the third cyclic shift initial value may be used and the first cyclic shift initial value may not be used. When the first cyclic shift initial value is set and the third cyclic shift initial value is determined, the sum of the first cyclic shift initial value and the third cyclic shift initial value may be used.

[0281] The first SRS sequence ID may be set by the 16th upper layer parameter. The second SRS sequence ID may be determined based on the DCI format. When the first SRS sequence ID is set and the second SRS sequence ID is determined, the second SRS sequence ID may be used and the first SRS sequence ID may not be used. When the first SRS sequence ID is set and the second SRS sequence ID is determined, the sum of the first SRS sequence ID and the second SRS sequence ID may be used. Yes.

[0282] The third SRS sequence ID may be determined based on some or all of the number of OFDM symbols in the SRS resource, the number of repetitions, and the maximum number of cyclic shifts. When the first SRS sequence ID is set and the third SRS sequence ID is determined, the third SRS sequence ID may be used and the first SRS sequence ID may not be used. When the first SRS sequence ID is set and the third SRS sequence ID is determined, the sum of the first SRS sequence ID and the third SRS sequence ID may be used.

[0283] Furthermore, the spatial relation between the reference signal (RS) and the SRS may be defined by a 17th upper-layer parameter. For example, the reference reference signal (RS) The spatial relationship between the RS (reference signal) and the target SRS (target SRS) is determined by the 17th upper-level parameter. It may be set by the data. The 17th upper-level parameter is spatialRelationInfo, also Alternatively, spatialRelationInfoPos may be used. The spatial relationship is set using a reference signal (reference). The reference signal may include an ID. The reference signal may be an SS / PBCH block. The reference signal may be a CSI-RS. The reference signal may be an SRS. In one serving cell, the reference signal may be set. For example, one serving cell may be the 18th upper It may be indicated by layer parameters. A certain SRS is one in one serving cell This may be set in the BWP. For example, one serving cell may have the same serving as the target SRS. It may be a Bing Cell. For example, one BWP may be set by the 19th upper layer parameter. The 18th upper layer parameter may be servingCellId. The layer parameter may be uplinkBWP. One or more SRS parameters may be set by the first upper layer parameter. For example, the first upper layer parameter may be SRS-Resource or SRS-PosResource.

[0284] If the 20th upper layer parameter is not set, the comb number will be one of 2, 4, or 8. This may also be the case. If the 20th upper layer parameter is set, the number of combs will be 2, 4, 8, and It may be any of the 16. If the 20th upper layer parameter is not set, the 14th upper layer parameter may be any of cyclicShift-n2, cyclicShift-n4, and cyclicShift-n8. If the 20th upper layer parameter is set, the 14th upper layer parameter may be cyclicShift-n2, cyclicShift-n4, cyclicShift-n8, and cyclicShift-n16. Either of these is acceptable.

[0285] One or more SRS parameters are from the second upper layer parameter to the 20th upper layer parameter. It may include part or all of the following. Sending an SRS may mean sending an SRS resource. Sending an SRS may mean sending an SRS resource set. Sending an SRS may mean sending an SRS resource. Sending an SRS may mean sending an SRS resource set.

[0286] An SRS resource may occupy one or more OFDM symbols. For example, an SRS resource N is the last 6 OFDM symbols in one slot. SRS symb You may occupy one OFDM symbol. SRS symb This can be any of 1, 2, or 4. For example, an SRS resource is one S It may occupy any of the OFDM symbol locations in the lot. For example, the SRS resource is N in one slot SRS symb It may occupy N adjacent OFDM symbols. SRS ap individual The antenna port may be mapped to each OFDM symbol of the resource. SRS ap Even in 4 Often, 8 is also acceptable. For example, N for SRS resources. SRSap Each antenna port may be mapped to an OFDM symbol in the resource. SRS symb N can be any of 1, 2, 4, 8, or 12. SRS symb N can be any of 1, 2, 4, 8, 10, 12, or 14. SRS ap If N is 8, SRS symb It can be an even number. For example, N SRS ap,1 The antenna ports may be mapped to slots with even-numbered slot indices. For example, N SRS ap,2 The antenna ports may be mapped to slots with odd-numbered slot indices. SRS ap is, N SRS ap,1 + N SRS ap,2 That's fine.

[0287] If PUSCH and SRS are transmitted in the same slot, the SRS may be configured to be transmitted after the PUSCH. For example, if PUSCH and SRS are transmitted in one slot in one serving cell, the SRS may be configured to be transmitted after the PUSCH and the corresponding DMRS.

[0288] If a PUSCH transmission or PUCCH transmission overlaps with an SRS transmission, the SRS does not need to be transmitted in the overlapping OFDM symbol. For example, if a PUSCH transmission or PUCCH transmission overlaps with an SRS transmission in the time domain in a single serving cell, the SRS does not need to be transmitted in the overlapping OFDM symbol. In OFDM symbols, transmission is not required. Also, if a PUSCH transmission or PUCCH transmission overlaps with an SRS transmission, the SRS does not need to be transmitted. For example, N SRS ap If it is 8 If both PUSCH transmission and PUCCH transmission overlap with SRS, SRS does not need to be transmitted. For example, N SRS ap If the value is 8, and a PUSCH or PUCCH transmission overlaps with an SRS, then the SRS does not need to be transmitted in the overlapping OFDM symbol set. OFDM symbol The set may consist of two OFDM symbols.

[0289] If the upper-level parameter resourceType is set to 'periodic', one Target SRS resources with spatial domain transmission filter (SRS The source may be sent. If a higher-level parameter contains one ID, then one spatial region A target SRS resource with a spatial domain filter may be transmitted. One spatial domain filter may be used for receiving or transmitting a reference signal (reference signal). The reference signal may be an SS / PBCH block, a CSI-RS, or an SRS. For example, if a certain upper-layer parameter is 'ssb-Index', 'ssb-IndexServing', or 'ssb-IndexNcell', If it includes an ID, the reference signal may be an SS / PBCH block. For example, a higher layer The parameter contains either the ID 'csi-RS-Index' or 'csi-RS-IndexServing'. In this case, the reference signal may be periodic CSI-RS or semi-persistent CSI-RS. That's fine. For example, if a higher-level parameter contains either the ID 'srs' or 'srs-spatialRelation', the reference signal may be a periodic SRS. The reference signal may also be a DL PRS.

[0290] If the upper layer parameter resourceType is set to 'semi-persistent', the first slot (n+3N subframe,μ slot SRS transmission may begin from the first slot after the previous slot. For example, assumptions in SRS transmission may be applied from that first slot. Slot n may be the slot on which a PUCCH is transmitted. For example, a PUCCH may contain HARQ-ACK information corresponding to a PDSCH that transmits an activation command. That is, if an activation command is received, SRS transmission may start from the first slot. Furthermore, if an activation command is received, the expected SRS transmission from the first slot will be initiated. The following may be applied. The activation command may include assumptions (or spatial relationships) of spatial relationships. The assumptions of spatial relationships may be provided by a list. The list may be a list of reference signal IDs. For example, each of the reference signal IDs may be an SS / PBCH block and an NZP You may refer to either a CSI-RS resource or an SRS resource. The NZP CSI-RS resource may be set up in one serving cell. The SRS resource may be set up in one serving A cell and one uplink BWP may be configured. For example, one serving cell , or may be indicated by the first field in the activation command. For example, one uplink BWP may be indicated by the second field in the activation command. The first field may be the Resource Serving Cell ID field. The second field may be the Resource BWP ID field. For example, one serving cell may be the same serving cell as the SRS resource set. For example, one uplink BWP is It may also be the same uplink BWP as the SRS resource set.

[0291] One SRS resource in the activated SRS resource set (resource set) is ranked higher. When set by layer parameters, the ID of the first reference signal in the activation command is higher It may be assumed that the ID of the second reference signal in the level parameters will be overwritten. The layer parameter can be either spatialRelationInfo or spatialRelationInfoPos. stomach.

[0292] If a deactivation command is received and PUCCH is transmitted in slot n, SRS transmission may be stopped starting from the first slot. The deactivation command is transmitted to PDSCH Therefore, transmission may be performed. PUCCH may include HARQ-ACK information corresponding to PDSCH. The cessation of SRS transmission corresponding to the SRS resource set to be deactivated is applied from the first slot. This is also fine. The first slot is n+3N subframe,μ slot It could also be the first slot after the slot. μ could be the SCS setting for PUCCH.

[0293] Terminal device 1 activates semi-persistent SRS resource If a semi-persistent SRS resource has a configuration and does not receive a deactivation command, the configuration may be considered active on one uplink BWP. The uplink BWP may be active. Also, terminal device 1 is activated semi-permanent SRS lithography. It has a configuration (active semi-persistent SRS resource configuration) and is inactive When a transformation command is received, the configuration of the semi-persistent SRS resource may be suspended.

[0294] If the upper-level parameter resourceType is set to 'aperiodic', some or all of operations 1 through 7 may be applied.

[0295] Action 1 may involve receiving the configuration of one or more SRS resource sets.

[0296] Operation 2 may involve receiving one command. One command may be a downlink DCI-based command. One command may be a group common DCI-based command. One command may be an uplink DCI It can also be a base command. The minimum time interval is the N2OFDM symbol and an additional time period T. switch The minimum time interval may be the minimum time interval from the last OFDM symbol of the PDCCH that triggers a non-periodic SRS transmission to the first OFDM symbol of the SRS resource. The minimum time interval is N2 + 14 OFDM symbols plus an additional time period T. switch The minimum time interval may be determined based on at least the minimum SCS. The minimum SCS may be the smallest SCS among the SCS of the PDCCH, the first uplink carrier, the second uplink carrier, and the SRS. Additional time period T switch It may be 0.

[0297] Action 3 may be triggered by a non-periodic SRS without data and CSI. For example. DCI formats 0_1 and 0_2 may trigger aperiodic SRS. Periodic SRS does not need to include data and CSI.

[0298] Operation 4 may involve terminal device 1 transmitting an SRS in each of one or more SRS resource sets and in the (t+1)th available slot. The SRS may be an aperiodic SRS. One or more SRS resource sets may be triggered by a DCI. A DCI that triggers an aperiodic SRS may be received in the first slot n. At least one resource set (SRS resource set) may be set by the upper layer parameter availableSlotOffset. Available slots may be counted from the second slot. The second slot may be determined based on at least the first slot and an offset value (slot k). The offset value may be set by a second upper layer parameter. Second upper layer The parameter may be slotOffset. The second upper-level parameter may be set for each of the one or more SRS resource sets that are triggered. Available slots are, It may also be a slot that meets the conditions. The conditions are one resource set (SRS resource set) UL symbols or flexible symbols may exist for time-domain positions corresponding to multiple SRS resources in (t). The condition is that the UE of the minimum timing request It may also be necessary to satisfy the capability. The minimum timing requirement is the triggering PDCCH and 1 Even the minimum timing request between all SRS resources in a resource set Good. The SRS resource is triggered from the first OFDM symbol that transmits the DCI of the SRS request. Up to the last OFDM symbol in the set, terminal device 1 receives SFI instructions in flexible symbols, UL cancellation instructions, and dynamic scheduling of downlink channels / signals. It is not necessary to expect to receive a signal. From the first OFDM symbol that transmits the DCI of the SRS request to the last OFDM symbol of the triggered SRS resource set, terminal device 1 is not necessary to expect to change the determination of available slots. This t may be set by a third upper-layer parameter. The third upper-layer parameter may be availableSlotOffset. For example, t may be for each of the one or more triggered SRS resource sets It may be set to up to four values. t may be based on the subcarrier spacing of the triggered SRS transmission. SRS resources for which the third upper layer parameter is not set In a set, t can be 0.

[0299] Operation 5 may involve transmitting an SRS in each of one or more SRS resource sets and in the first slot. The SRS may be an aperiodic SRS. A DCI that triggers an aperiodic SRS may be received in slot n. The first upper layer parameter is The resource set (SRS resource set) may not be set. A second upper-level parameter may be set. The second upper-level parameter may be ca-SlotOffset. The lot may be determined based at least on slot n and slot k.

[0300] Operation 6 may also involve sending a target SRS resource with one spatial domain filter. stomach.

[0301] Operation 7 may involve updating the spatial relationship for one SRS resource and applying it to the SRS transmission. The number of SRS transmissions is n+3N. subframe,μ slot It may start from the first slot after the slot. μ may be the SCS setting of PUCCH. The update command is propagated by PDSCH. This is also acceptable. The HARQ-ACK corresponding to PDSCH may be transmitted in slot n. One SRS resource may be configured by the upper layer parameter SRS-Resource. Terminal device 1 receives the update command You may receive a (spatial relation update command). The update command is for spatial relations This may include assumptions. Spatial relationship assumptions may be provided by a list. The list may refer to one or more reference signal IDs.

[0302] Setting the upper-level parameter `resourceType` to 'aperiodic' may indicate that the SRS resource supports aperiodic SRS (aperiodic). Setting the upper-level parameter `resourceType` to 'semi-persistent' may indicate that the SRS resource is semi-persistent. It may also support SRS (semi-permanent). Upper-level parameter: resourceType Setting 'periodic' to this may indicate that the SRS resource corresponds to periodic SRS (periodic).

[0303] It is not necessary to expect different time-domain behaviors for one or more SRS resources within a single SRS resource set. For example, it is not necessary to expect different time-domain behaviors for one or more SRS resources within a single SRS resource set. It is not necessary to expect different time-domain behaviors to be set between an SRS resource and its associated SRS resource set.

[0304] It is not expected that one or more OFDM symbols will be configured to overlap between the first and second SRS resources within a single carrier. For example, the first SRS resource may be configured by the upper-level parameter SRS-PosResource. The resourceType may be set by the higher-level parameter SRS-Resource. The resourceType of both the first and second SRS resources may be 'periodic'.

[0305] It is not necessary to expect the transmission of the first SRS to be triggered or activated. For example, the first SRS may be an SRS in one or more OFDM symbols. One or more OFDM symbols may overlap between the first and second SRS resources. For example, the first SRS resource may be set by the upper-level parameter SRS-PosResource. The second SRS resource may be set by the upper-level parameter SRS-Resource. The resourceType of both the first and second SRS resources may be 'semi-persistent' or 'aperiodic'.

[0306] Within a single carrier, it is not expected that multiple OFDM symbols will be configured that overlap with multiple SRS resources. Multiple SRS resources may be configured by the higher-level parameter SRS-PosResource, where the resourceType of the multiple SRS resources is 'periodic'.

[0307] It is not necessary for a single carrier to trigger or activate SRS transmission in multiple OFDM symbols. Multiple OFDM symbols may trigger or activate SRS transmission in multiple SRS symbols. The OFDM symbols may overlap with the source. Multiple SRS resources may be configured by the higher-level parameter SRS-PosResource, where the resourceType of the multiple SRS resources is 'semi-persistent' or 'aperiodic'.

[0308] In the case of PUCCH and SRS on one carrier, terminal device 1 does not have to transmit an SRS when the first SRS is set. The first SRS may be set with the same OFDM symbol as PUCCH. PUCCH may transmit only a CSI report. PUCCH may transmit only an L1-RSRP report. PUCCH may transmit only an L1-SINR report. Terminal device 1 may transmit a second SRS. When transmission is configured or triggered, an SRS does not have to be transmitted. The second SRS may be either a semi-persistent SRS or a periodic SRS configured to be transmitted in the same OFDM symbol as PUCCH. The second SRS may be transmitted in the same OFDM symbol as PUCCH. It may be a triggered non-periodic SRS. PUCCH may transmit a HARQ-ACK, a link recovery request, and some or all of a scheduling request (SR). If an SRS is not sent due to overlap with PUCCH, only the SRS symbols that overlap with the PUCCH symbols may be dropped. Also, N SRS ap 8 In this case, SRS symbols that overlap with the PUCCH symbol and SRS symbols that do not overlap with the PUCCH symbol may be dropped. If the transmission of a periodic SRS is triggered because it overlaps with PUCCH, PUCCH does not need to be transmitted.

[0309] One SRS resource corresponding to the resourceType set to 'aperiodic' is periodic, Alternatively, if the transmission of semi-persistent SRS is triggered in one or more OFDM symbols, terminal device 1 may transmit aperiodic SRS resources, and periodic or semi-persistent SRS in overlapping OFDM symbols may be dropped. Periodic or semi-permanent SRS may be transmitted in the N. SRSap If the value is 8, periodic or semi-persistent SRS in non-overlapping OFDM symbols are dropped. That's fine too. Being dropped can mean not being sent at all. The SRS resource corresponding to the resourceType to which ' is set is configured for periodic SRS transmission 1 Alternatively, if triggered by multiple OFDM symbols, terminal device 1 may send a semi-persistent SRS resource, and periodic SRS for overlapping OFDM symbols may be dropped. i. Periodic SRS in non-repeating OFDM symbols may be transmitted. N SRS ap If the value is 8, periodic or semi-persistent SRS in the overlapping OFDM symbol set will drop. It can also be used as a top.

[0310] SpatialRelationInfo is activated for the first SRS resource, or further If new, the spatial relationship may apply to the second SRS resource. The first SRS resource may be a semi-persistent SRS resource or a non-periodic SRS resource. The second SRS resource may be a semi-persistent SRS resource or a non-periodic SRS resource with the same SRS resource ID. It may also be -. The second SRS resource is for all BWP in multiple CCs that are determined And a semi-persistent SRS resource or aperiodic SRS resource that has the same SRS resource ID This may be done. The first SRS resource may be set by a higher-level parameter. Spatial relationships may be activated or updated by MAC CEs for multiple CCs (Component Carriers) and / or multiple BWP sets. The list of multiple CCs may be determined by a higher-level parameter. The higher-level parameter may be simultaneousSpatial-UpdatedList1 or simultaneousSpatial-UpdatedList2.

[0311] Number of SRS ports: N SRS ap It could be 8. For example, N for one SRS resource. SRS ap It may be 8. For SRS, or for SRS resources, either TDM (Time Division Multiplexing) based mapping or non-TDM based mapping may be configured. - If mapping is set, OFDM symbol count S ap A TDM base mapping is set up, which means the number of OFDM symbols S ap It may also be provided. The TDM base mapping is configured, S ap It may also be 2 or more. The setting of nonTDM base mapping is S ap It is also acceptable for N to be 1. SRS ap In 8 If not, S ap It is not necessary to expect that this will be set. SRS ap If it is not 8, S ap This can be ignored.

[0312] S ap This may be the number of OFDM symbols on which the SRS port is located (mapped). For example, S ap If N is 1, SRS apEach SRS port may be located on a single OFDM symbol. For example, S ap If N is 2, SRS ap Each SRS port may be located on two OFDM symbols. For example, S ap If N is 4, SRS ap The SRS ports may be arranged on four OFDM symbols. ap This may be the same as the number of antenna port groups. For example, codeb If the subset is 'fullCoherent', S ap It may be 1. For example, if the codebook subset is '4port-partialCoherent', S ap It can also be 2. Example For example, if the codebook subset is '2port-partialCoherent', S ap It was 4 It is also acceptable if the codebook subset is 'nonCoherent'. ap It may be 1 or 8.

[0313] An antenna port group may be a group of antenna ports that maintain coherence. The distance between antenna port groups may not depend on wavelength. For example, if there are two antenna port groups, the first antenna port group may be an antenna port group. It may be composed of {1000,1001,1004,1005}. If the number of antenna port groups is 2, the second antenna port group is composed of antenna ports {1002,1003,1006,1007}. This is also good. For example, if the number of antenna port groups is 4, the first antenna port group The first antenna port group may consist of antenna ports {1000, 1004}. If the number of antenna port groups is 4, the second antenna port group may consist of antenna ports {1001, 1005}. Good. If the number of antenna port groups is 4, the third antenna port group is . It may consist of antenna ports {1002, 1006}. If the number of antenna port groups is 4, the fourth antenna port group may consist of antenna ports {1003, 1007}.

[0314] The codebook subset being 'fullCoherent' means that each layer is N SRS ap (for example , 8) may be mapped to antenna ports. A codebook subset being '4port-partialCoherent' means that each layer may be mapped to 4 antenna ports. A codebook subset being '2port-partialCoherent' means that This means that each layer may be mapped to two antenna ports. A subset being 'non-coherent' may mean that each layer is mapped to a single antenna port.

[0315] S ap If is 2, the antenna ports {1000, 1001, 1004, 1005} may be mapped to the first OFDM symbol. ap If is 2, the antenna ports {1002, 1003, 1006, 1007} ​​may be mapped to a second OFDM symbol. ap If is 4, the antenna ports {1000, 1004} may be mapped to the first OFDM symbol. ap If is 4, the antenna ports {1001, 1005} may be mapped to the second OFDM symbol. ap If is 4, the antenna ports {1002, 1006} may be mapped to a third OFDM symbol. ap If the value is 4, the antenna ports {1003, 1007} ​​may be mapped to a fourth OFDM symbol.

[0316] S ap If is 2, the antenna ports {1000, 1001, 1002, 1003} may be mapped to the first OFDM symbol. ap If is 2, the antenna ports {1004, 1005, 1006, 1007} ​​may be mapped to a second OFDM symbol. ap If is 4, the antenna ports {1000, 1001} may be mapped to the first OFDM symbol. ap If is 4, the antenna ports {1002, 1003} may be mapped to the second OFDM symbol. ap If is 4, the antenna ports {1004, 1005} may be mapped to a third OFDM symbol. ap If the value is 4, the antenna ports {1006, 1007} ​​may be mapped to a fourth OFDM symbol.

[0317] For one SRS resource, the number of iterations (repetition factor) R fac Even if it is set The number of iterations may be set by the higher-level parameters. The number of iterations may be 1, 2, or 4. The number of iterations may be 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, or 14. It may be possible. Number of repetitions R fac This may be set by the resourceMapping parameter in the upper layer parameter SRS-Resource. Number of iterations R fac This may be determined based on the DCI format. The number of repetitions is N SRS symb The following is also acceptable.

[0318] R fac is N SRS symb Being the same as this may mean that frequency hopping is not set. fac is N SRS symbBeing the same means that either or both of cyclic shift hopping and sequence hopping are not set. Each of the multiple antenna ports of a single SRS resource may be mapped to the first set. For example, if frequency hopping is not configured, each of the multiple antenna ports for one SRS resource in each slot will be N SRS symb All OFDM symbols may be mapped to a first set. The first set may be a set of one or more subcarriers. The first set may be a set of one or more subcarriers in the second set. It may be a set. The second set may be a set of one or more PRBs. For example If frequency hopping is not configured within a single SRS resource in each slot, then each of the multiple antenna ports of that single SRS resource in each slot is N SRS symb All OFDM symbols may be mapped to the first set. SRS symb R fac It is acceptable for it to be divisible by R. fac is, S ap It is also acceptable for X to be divisible by Y if modulo (X, Y) is 0. ap When R is used, fac is, S ap That's all. That's good. S ap When R is used, fac is, S ap It may be divisible by S. ap The use of is, S ap It is also acceptable for S to be greater than 1. ap The use of S ap This may be set by higher-level parameters. ap The use of this means that at least N SRS apThis may include the case where the value is 8.

[0319] S ap and R fac The product of is R s This is also acceptable. For example, R s It is mapped to one OFDM symbol. This could also be the number of repetitions for the SRS port. s This may also be the number of OFDM symbols. s is, N SRS symb The following is also acceptable: N SRS symb R s It's fine. ap is 1 or more In that case, R s S may be used. ap If this is set, R s This may be used. If TDM base mapping is set, R s R may be used. s When R is used, s is, N SRS symb The following is also acceptable: R s When used, N SRS symb R s It is also acceptable. s When R is used, s It is not necessary to expect that R is 1. s is N SRS symb It is the same as This can also mean that frequency hopping is not set. s is N SRS symb Being the same as this may mean that cyclic shift hopping and / or sequence hopping are not set. For example, if frequency hopping is not set, each of the multiple antenna ports of one SRS resource in each slot is N SRS symb All OFDM symbols may be mapped to the same set of subcarriers. R s S ap This is the same as setting up frequency hopping without repetition. That's fine. R s S ap If the same, multiple antenna ports (or each of the antenna ports) of a single SRS resource may be mapped to different sets. This may be a set of subcarriers. Different sets are S ap This may also be a set of subcarriers in each set of OFDM symbols (or adjacent OFDM symbols). s S ap If greater than N SRS symb Round 2 s If larger, one SRS in each slot Each of the source antenna ports is R s Each set of adjacent OFDM symbols may be mapped to the same subcarrier set. SRS symb / R s Periphery in a set of individual items Wavenumber hopping may follow the SRS hopping parameters. SRS symb R s Divisible It is also acceptable to do so. That is, N SRS symb and R s The remainder after division may be 0.

[0320] The first one or more antenna ports may correspond to the first CS (Cyclic shift) set. For example, if cyclic shift hopping is not configured, the first one or more antenna ports in each slot are N SRS symbAll OFDM symbols may correspond to the first CS set. The first CS set may be a set of cyclic shift αi corresponding to the first one or more antenna ports pi. For example, if cyclic shift hopping is not set within one SRS resource in each slot, each slot The first one or more antenna ports in are N SRS symb All OFDM symbols It may also be compatible with the first CS set.

[0321] Furthermore, frequency hopping is configured within one SRS resource in each slot, and there are no repetitions (the number of repetitions is 1 or S). ap If (i.e., then each of the antenna ports of one SRS resource in each slot may be mapped to a different set in each OFDM symbol. The set may be one or more sets of subcarriers. For the set, the same number of combs (transmission comb value) may be assumed.

[0322] Furthermore, cyclic shift hopping is configured within one SRS resource in each slot, and there are no repetitions (the number of repetitions is 1 or S). ap If (i.e., the first one or more antenna ports in each slot are S ap Each set of adjacent OFDM symbols may be mapped to a different CS set. The CS set is one or more antenna points It may also be a set of cyclic shift αi corresponding to pi. Therefore, the same number of combs (transmission comb value) may be assumed.

[0323] When frequency hopping and repetition are set, one or more of the SRS resources Each of the terminal ports is an OFDM symbol included in the nth OFDM symbol set. , may be mapped to a subcarrier included in the nth subcarrier set. The nth OFDM symbol set is R fac It may also be a pair of adjacent OFDM symbols. fac n can be the number of repetitions. The nth subcarrier set may consist of one or more subcarriers. n can be an integer greater than or equal to 1. For example, n is N SRS symb / R fac And It is also acceptable to use mod(R fac , S ap ) may be 0. The nth subcarrier set may consist of one or more subcarriers that are different from the other subcarrier sets. If frequency hopping and repetition are set within one SRS resource in each slot, each of the antenna ports of the one SRS resource in each slot is R fac Each pair of OFDM symbols may be mapped to the same set of subcarriers, and two Frequency hopping between pairs may follow an SRS frequency hopping pattern. The hopping follows an SRS frequency hopping pattern, which means that frequency hopping is applied. It may be an action, it may be an execution, or it may be a setting.

[0324] When frequency hopping and repetition are set, one or more of the SRS resources Each of the terminal ports is an OFDM symbol included in the nth OFDM symbol set. , may be mapped to a subcarrier included in the nth subcarrier set. The nth OFDM symbol set is R s It may also be a pair of adjacent OFDM symbols. The nth subcarrier An asset may consist of one or more subcarriers. n may be an integer greater than or equal to 1. For example, n is N SRS symb / R s This may also be the case. The nth subcarrier set is It may consist of one or more subcarriers different from the other subcarrier sets. If frequency hopping and repetition are set up within one SRS resource in each slot, each of the antenna ports of the one SRS resource in each slot is R s Each pair of OFDM symbols may be mapped to the same set of subcarriers, and two Frequency hopping between pairs may follow an SRS frequency hopping pattern.

[0325] When cyclic shift hopping is configured, one or more antenna ports (SRS Port) is an OFDM symbol included in the nth OFDM symbol set, where the nth cycle It may also support backshifting. The nth OFDM symbol set is R fac Individual adjacent OFDM syn It may also be a pair of Bolls. The nth cyclic shift may also be the nth CS set. n may be an integer greater than or equal to 1. For example, the maximum number of n is N SRS symb / R fac It is fine In this case, mod(R fac , S ap ) may be 0. One SRS resource in each slot. If cyclic shift hopping and repetition are set within, 1 in each slot The antenna port for one SRS resource is R fac Within each pair of OFDM symbols, the same cycle It can also support cyclic shifting, and cyclic shift hopping can occur between two pairs. The cyclic shift hopping pattern may be followed. Whether cyclic shift hopping follows a cyclic shift hopping pattern may be determined by whether cyclic shift hopping is applied, executed, or configured. Whether cyclic shift hopping is applied may be determined by higher-level parameters.

[0326] When cyclic shift hopping is configured, one or more antenna ports (SRS Port) is an OFDM symbol included in the nth OFDM symbol set, where the nth cycle It may also support backshifting. The nth OFDM symbol set is R s Individual adjacent OFDM symbols It may also be a pair of 'L's. The nth cyclic shift may also be the nth CS set. n may be an integer greater than or equal to 1. For example, the maximum number of n is N SRS symb / R s It may be. When cyclic shift hopping and repetition are configured within a single SRS resource in a slot, the antenna port of the single SRS resource in each slot is R s A pair of OFDM symbols may correspond to the same cyclic shift, and between the two pairs, Shift hopping may follow a cyclic shift hopping pattern.

[0327] If the number of antenna ports is 8, then N SRS symb / R fac N may be an even number. If the number of antenna ports is 8, then N SRS symb / R fac It may be 2 or more. If the number of antenna ports is 8, and S ap If the value is 2, the first antenna port set and the second antenna port set may be determined. The antenna port set may consist of four antenna ports. Good. The first set of antenna ports is mapped in the first OFDM symbol. The carrier set may be the same as the second subcarrier set to which the second antenna port set is mapped in the second OFDM symbol. The first OFDM symbol is the same as the second OFDM symbol. It may be different from the standard. If the number of antenna ports is 8, cyclic shift hoppy The ng may be applied.

[0328] For example, the antenna ports included in the first set of antenna ports of one SRS resource Each of them is a first OFDM symbol included in the first OFDM symbol set, and the first s The second antenna port set may be mapped to the carrier set. Each antenna port may be mapped to the first subcarrier set in the second OFDM symbol included in the first OFDM symbol set. Each antenna port included in the first antenna port set may be mapped to the second subcarrier set in the first OFDM symbol included in the second OFDM symbol set. Each antenna port included in the second antenna port set may be mapped to the second subcarrier set in the second OFDM symbol included in the second OFDM symbol set. Switching the mapping from the first subcarrier set to the second subcarrier set is called frequency hopping. It may also be called N. For example, if the number of antenna ports is 8, SRS symb / R fac Frequency hopping may be applied to each OFDM symbol. In this case, mod(R fac , S ap ) is 0 This is also good. For example, if the number of antenna ports is 8, then N SRS symb / R s Frequency for each OFDM symbol Number hopping may be applied. An OFDM symbol set consists of two or more OFDM symbols. A subcarrier set may consist of one or more subcarriers. The antenna port set is N SRS ap / S ap It may consist of individual antenna ports.

[0329] For example, if the number of antenna ports is 4 or less, the first hopping frequency (first SRS hopping frequency) A hopping pattern may be applied. If the number of antenna ports is 8, a second hopping pattern may be applied. A hopping frequency (second SRS hopping pattern) may be applied. The first SRS hopping pattern may differ from the second SRS hopping pattern.

[0330] A non-periodic SRS resource with intra-slot frequency hopping within a single BWP is configured. That's good too. R fac If is 1 and frequency hopping is set, then the full hopping band The bandwidth (full hopping bandwidth) is N SRS symb The symbols may be sounded with equal-size subbands. Full hopping bandwidth is N SRS symb / R fac Sounded across the set with subbands of the same size That's fine too. N SRS symb / R fac Each of these sets is R fac Composed of adjacent OFDM symbols It is also acceptable to do this. In this case, mod(R fac , S ap) may be 0. Each antenna port of the SRS resource may be mapped to the same subcarrier set within each OFDM symbol set. OFDM symbol sets are R fac It may be a pair of adjacent OFDM symbols. A subcarrier set may be a set of one or more subcarriers. fac Next to each The adjacent OFDM symbol pair may also be the OFDM symbol of the resource.

[0331] A non-periodic SRS resource with intra-slot frequency hopping within a single BWP is configured. That's good too. R s If is 1 and frequency hopping is set, then full hopping bandwidth The width (full hopping bandwidth) is N SRS symb The symbols may be sounded with equal-size subbands. The full hopping bandwidth is N SRS symb / R s The set may be sounded with subbands of the same size. SRS symb / R s Each of these sets is R s It may consist of individual adjacent OFDM symbols. Each of the antenna ports of the SRS resource is the same subkey within each OFDM symbol set. It may be mapped to a carryset. The OFDM symbol set is R s It may be a pair of adjacent OFDM symbols. A subcarrier set is a set of one or more subcarriers. It is also acceptable. s A pair of adjacent OFDM symbols is an OFDM symbol of a resource. That's fine.

[0332] Periodic or semi-persistent SRS resources may be configured with inter-slot hopping or intra-slot hopping within a single BWP. The SRS resources may occupy the same OFDM symbol location in each slot. N symbol SRS resources may occupy the same OFDM symbol location in each slot. SRS symb If R is 4, fac If the value is 2 and frequency hopping is enabled, then intra-slot hopping and inter-slot hopping may be supported in each of the multiple antenna ports. Each of the multiple antenna ports supports different subcarrier frequencies across two pairs in each slot. They may be mapped to a set. Each of the two pairs is R fac With adjacent OFDM symbols It may be present. Each antenna port of the SRS resource is the same sub within each pair. They may be mapped to a carrier set. Additionally, a first portion of the antenna ports of the SRS resource may be mapped to a first subcarrier set within each pair. A second portion of the antenna ports of the SRS resource may be mapped to a second subcarrier set within each pair.

[0333] Periodic or semi-permanent SRS with cyclic shift hopping within a single BWP A source may be set. The SRS resource has the same OFDM symbol position in each slot. It may occupy the same OFDM symbol position in each slot. SRS symb If the value is 4, and the number of repetitions is 2, and cyclic shift hopping is set, then one or more antenna ports will be: Each slot may correspond to a different set of CS across two pairs. Each of the two pairs is R fac It may be one adjacent OFDM symbol. One or more antenna points The elements may be mapped to the same CS set within each pair. Also, the elements of the SRS resource A first portion of the antenna ports may be mapped to a first CS set within each pair. A second portion of the antenna ports of the SRS resource may be mapped to a second CS set within each pair. It's okay.

[0334] SRS resources may also be configured by higher-level parameters. For example, higher-level parameters The data can be an SRS-Resource. For example, the upper-level parameter can be an SRS-PosResource. It may be present. The number of antenna ports may be determined for the SRS resource. The number of consecutive OFDM symbols may be determined for the SRS resource. For the time domain of the SRS resource The starting position may be determined. The starting position in the frequency domain is determined for the SRS resource. This is also acceptable. The number of combs may be determined for the SRS resource. The maximum number of cyclic shifts may be determined for the SRS resource. The length of the SRS sequence may be determined for the SRS resource.

[0335] An SRS resource may consist of one or more elements. One or more elements may be: Number of terminal ports N SRS ap And the number of consecutive OFDM symbols N SRS symb This may include part or all of the starting position l0 in the time domain and the starting position k0 in the frequency domain. Number of antenna ports N SRS ap This could be the number of antenna ports for SRS. For example, the number of antenna ports N. SRS ap This may be provided by a first upper layer parameter. The first upper layer parameter may be nrofSRS-Ports. Number of antenna ports N SRS apWhich of 1, 2, 4, or 8? Alternatively, the antenna port pi is equal to the number of antenna ports N. SRS ap It may be determined based on at least the following: For example, i is between 0 and N SRS ap The value can be as low as -1, and the antenna port pi can be i+1000. The number of antenna ports N is equal to the number of antenna ports. SRS ap The number of antenna ports N may be determined at least based on whether it is given by a first upper layer parameter. If the first upper layer parameter is not provided, the number of antenna ports N SRS ap It may be 1. Antenna port The number may be any of 1000, 1001, 1002, 1003, 1004, 1005, 1006, or 1007.

[0336] Number of consecutive OFDM symbols N SRS symb N can be any of 1, 2, 4, 8, or 12. For example, the number of consecutive OFDM symbols N SRS symb This may be determined by a higher-level parameter. The higher-level parameter may be an nrofSymbols. The higher-level parameter may be a higher-level parameter resourceMapping that includes fields of nrofSymbols.

[0337] The starting position l0 in the time domain is N slot symb -1-l offset It may be given by offset Tl offset The offset l can be an integer from 0 to 13. offset The best slot You can count backwards from the end. Offset l offset This may be determined by upper-layer parameters. Upper-layer parameters may also be resource mappings. The meter may include the startPosition field. offset is N SRS symb -1 or greater is also acceptable.

[0338] An SRS sequence (Sounding reference signal sequence) may be generated. For example, one SRS sequence may be generated for one SRS resource. (pi) (n,l') is It may be generated by part or all of Formula 1, Formula 2, Formula 3, and Formula 4.

number

number

number

number

[0339] In equation 1, n may be greater than or equal to 0, and M SRS SC,b -1 or less is also acceptable. SRS SC,b M may be the number of subcarriers. SRS SC,b The length of the SRS series may be the same. OFDM syn The index l' of Boll ranges from 0 to N. SRS symb An index down to -1 is also acceptable. Formula 1 δ in this case is log2(K TC ) may also be used. Comb number K TC is one of the values ​​2, 4, or 8. That's fine. Comb count K TC This may be determined by higher layer parameters. For example, higher The layer parameter may also be transmissionComb.

[0340] In equations 1, 2, and 3, u may be a group number. In equations 1, 2, and 3, v may be a base sequence number within a group. The group number may be an integer from 0 to 29. One group number may correspond to one group. i. One base sequence number may correspond to one base sequence. In formula 4, q may be determined based on at least the group number u and the base sequence number v. ZC is a certain value It could be the largest prime number among the smaller ones. For example, a certain value is M SRS SC,b That's fine.

[0341] Even if the cyclic shift αi is a cyclic shift for antenna port pi That's good. For example, the antenna port pi and cyclic shift αi may be determined for each i. The cyclic shift αi may be determined by equation 5.

[0342] α' may be the initial value of the cyclic shift. If cyclic shift hopping is not applied, α' may be 0. For example, the initial value of the cyclic shift is: It may be set by the stratigraphic parameter. The initial value of the cyclic shift is n SRS ID It may be determined by the following: For example, the initial value of the cyclic shift is determined in DCI format. It may be changed. The initial value of the cyclic shift is 2πR fac / N SRS symb This may also be the case. For example, when cyclic shift hopping is applied, the initial value of the cyclic shift is R fac And, N SRS symb The decision may be based on one or both of the following. apWhen used, The initial value of the cyclic shift is R s And, N SRS symb The decision may be based on one or both of the following.

[0343] The index l'' can also be l'. l'' is floor(l' / R fac ) may also be the case. l'' is {0,1,..., N SRS symb / R fac It could also be -1. In other words, l'' could be a time-domain index.

number

[0344] The maximum number of cyclic shifts (maximum value) n CS,max SRS is the comb number K TC Determined based on It is also acceptable. For example, K TC If n is 2, CS,max SRS It could be 8. For example, K TC If n is 4, CS,max SRS It may be 12. For example, K TC If n is 8, CS,max SRS n may be 6. CS,i SRS This may be determined by any of equations 6, 7, and 8. For example, S ap Regardless of the value of n CS,i SRS This may be determined by any of equations 6, 7, and 8. Also, S ap If n is 2 or greater, CS,i SRS Formula 6, and may be determined by either equation 8. In this case, in equations 6 and 8 pi may be determined based on the OFDM symbol index, and N in equations 6 and 8. SRS ap is S ap It may be decided based on this.

number

number

number

[0345] For example, if condition 1 is met, n CS,i SRS This may be determined by formula 6. For example, condition 1 is the number of antenna ports N SRS ap The value is 4, and the maximum number of cyclic shifts is n. CS,max SRS It may also be 6. Condition 1 is the number of antenna ports N SRS ap is 8, The maximum number of cyclic shifts n CS,max SRS It is also acceptable for to be 12. Condition 1 is, Number of terminal ports N SRS ap The value is 8, and the maximum number of cyclic shifts is n. CS,max SRS It may also be 8. For example, if condition 2 is satisfied, n CS,i SRS This may be determined by equation 7. Condition 2 is the number of antenna ports N SRS ap It is also acceptable for it to be 8. Condition 2 is Number of antenna ports N SRS ap The value is 8, and the maximum number of cyclic shifts is n. CS,max SRS It may also be 6. Condition 2 is the number of antenna ports N SRSap The value is 8, and the maximum number of cyclic shifts is n. CS,max SRS It may also be 12. For example, if condition 1 is satisfied And if condition 2 is satisfied, n CS,i SRS n may be determined by formula 6. Also, if condition 1 is satisfied and condition 2 is satisfied, then n CS,i SRS Even if it is determined by equation 7 Good. If condition 1 is not met and condition 2 is not met, then n CS,i SRS This is given by equation 8 It may be decided. Condition 2 is optional. For example, n CS,i SRS This is either equation 6 or equation 8. It may be determined by the following.

[0346] n CS SRS This may also be called the initial value of the cyclic shift. CS SRS is from 0 to n CS,max SRS n can be an integer up to -1. CS SRS This may be determined by higher-level parameters. The upper layer parameter may also be transmissionComb. CS SRS This may be determined based on the upper layer parameter transmissionComb and whether cyclic shift hopping is applied. The initial value of the cyclic shift is an antenna port independent value and is cyclic shift αi or n CS,i SRS It may also be a value used to determine [something].

[0347] The initial value of the cyclic shift is determined by the upper layer parameter transmissionComb and the number of consecutive OFDM symbols N. SRS symb And, the number of repetitions R facAnd the maximum number of cyclic shifts n CS,max SRS And, TDM number S ap The decision may be based on at least some or all of the following. Whether cyclic shift hopping is applied may be set by a higher-layer parameter. If cyclic shift hopping is not applied, the initial cyclic shift value may be determined based on the higher-layer parameter transmissionComb. If cyclic shift hopping is applied, the initial cyclic shift value is determined by the higher-layer parameter transmissionComb and the number of consecutive OFDM symbols N. SRS symb And, the number of repetitions R fac And the maximum number of cyclic shifts n CS,max SRS The decision may be based on at least some or all of the following.

[0348] The initial value of the cyclic shift is the number of consecutive OFDM symbols N. SRS symb And, the number of repetitions R fac And the maximum number of cyclic shifts n CS,max SRS The decision may be based on at least some or all of the following. For example, if cyclic shift hopping is not applied, the initial cyclic shift value may be 0. If cyclic shift hopping is applied, In total, the initial value of the cyclic shift is the number of consecutive OFDM symbols N. SRS symb And, the number of repetitions R fac And the maximum number of cyclic shifts n CS,max SRS The initial value of the cyclic shift may be determined based on at least some or all of the following: For example, the initial value of the cyclic shift is the symbol index l'' n CS’ It may increase by n. CS SRS is, n CS’ It may also be the sum of l'' and the value provided by the upper-level parameter transmissionComb.

[0349] The initial value of the cyclic shift may be determined based at least on the DCI format. For example, if cyclic shift hopping is not applied, the initial value of the cyclic shift may be 0. If cyclic shift hopping is applied, the cyclic shift The initial value of the shift may be determined based at least on the DCI format. For example, , n CS SRS This may be the sum of the initial value of the cyclic shift and the value provided by the upper-layer parameter transmissionComb.

[0350] The cyclic shift αi and either or both of the initial cyclic shift values ​​are: Each OFDM symbol count may be determined, updated, or changed. The first OFDM symbol count may be 1 symbol. The first OFDM symbol count is determined by the number of iterations R. fac and This is also acceptable. The first number of OFDM symbols may be determined by the DCI format. For example, The cyclic shift αi and either or both of the cyclic shift initial value may be functions of the index l' of the OFDM symbol. For example, the cyclic shift (Cy The value of the click shift is l''=floor(l' / R fac ) may be determined at least on the basis of:

[0351] The sequence number u may be determined at least based on the index l' of the OFDM symbol. Alternatively, the sequence number u may be the series ID (SRS series ID) n. SRS ID It may be determined at least on the basis of the following: For example, the sequence group by the index l' of the OFDM symbol. The link can change (hop). Also, the index l' of the OFDM symbol. This may correspond to the antenna port pi. For example, by index i, the OFDM symbol The index of the letter may be determined.

[0352] The sequence ID is the number of consecutive OFDM symbols N SRS symb And, the number of repetitions R fac The series ID may be determined based on at least one or both of the following: The number of repetitions R fac Each symbol It may be changed.

[0353] SRS may be transmitted in an SRS resource. When SRS is transmitted in an SRS resource, the SRS sequence r corresponds to each of the OFDM symbols l' and each of the antenna ports of the SRS resource. (pi) (n,l') may be multiplexed. For example, the start r of the SRS sequence. (pi) (0,l') is mapped to resource element (k,l) in a slot for each antenna port pi. Alternatively, the start of the SRS sequence r could be determined based at least on the antenna port pi. (pi) (0,l') This may be mapped to a resource element (k,l) in a slot, or The SRS sequence may be mapped to the resource element (k, l+1) in the slot. That is, the SRS sequence may be mapped to a physical resource. (pi) (k',l') may be mapped to a resource element by formula 9. Alternatively, 0 may be mapped to the resource element. That's good too.

number

[0354] β SRS This may be a scaling factor (or Amplitude scaling factor). The length of the SRS sequence is M.SRS SC,b is the comb number K TC And the number of subcarriers N in one resource block. RB SC And, it may be determined based on at least the above.

[0355] Resource element frequency position K TC k'+k (pi) 0 varies depending on the antenna port pi. This is also acceptable. Frequency position K TC k'+k (pi) 0 may be one or more subcarriers. wave number position K TC k'+k (pi) 0 can also be a single subcarrier set. For example, k (pi) 0 may be determined at least based on the antenna port pi. Also, k (pi) 0 is k (pi) TC It may be determined based on at least the following: k (pi) TC This is either equation 10 or equation 11. It may be determined by the following.

number

number

[0356] For example, if condition 3 is met, k (pi) TC This may be determined by formula 10. For example, condition 3 is the number of antenna ports N. SRS ap The value is 4, and the maximum number of cyclic shifts is n. CS,max SRS It is also possible that the number of antenna ports N is 6, and the antenna port pi is one of {1001, 1003}. Condition 3 is the number of antenna ports N SRS apThe value is 4, and the cyclic shift is the maximum large number n CS SRS ga n CS,max SRS / 2 to n CS,max SRS The value can be up to -1, and the antenna port pi may be either {1001, 1003}. For example, if condition 3 is not met, k (pi) TC is, k bar TC It may also be acceptable. Comb number offset k bar TC This applies to the upper layer parameters. Therefore, it may be determined. The upper layer parameter may also be transmissionComb.

[0357] For example, if condition 4 is met, k (pi) TC This may be determined by formula 11. For example, condition 4 is at least the number of antenna ports N SRS ap Condition 4 may include that n is 8. For example, condition 4 may include that at least antenna port pi is one of {1001, 1003, 1005, 1007}. For example, condition 4 may include that at least antenna port pi is one of {1000, 1001, 1002, 1003}. Condition 4 is n CS,max SRS Including that it is 6 That's fine too. CS,max SRS It may also include the condition that is 12. For example, condition 4 is the antenna port Number N SRS ap The condition that n is 8, CS,max SRS It is also possible that the value is 6, and that the antenna port pi is one of {1001, 1003, 1005, 1007}.

[0358] Uplink power control may determine the power (transmit power) for PUSCH, and for PUCCH, SRS, and PRACH. Terminal equipment may include a transmit power control unit.

[0359] The transmission opportunities i for PUSCH, PUCCH, SRS, and PRACH are slot index, no The slot index may be determined based on the system frame number (SFN), the first symbol, and some or all of the number of consecutive symbols. μ s,f The leading symbol S for SRS may be l0. is, l offset The number of consecutive symbols L for SRS is , N SRS symb It may also be the case that the number of consecutive symbols L for SRS is S ap Based on It may also be used as a fixed value.

[0360] S ap If is 1, or S ap If this is not set, terminal device 1 will transmit power P SRS,b,f,c (i,q s Linear value P of ,l) Hat1 SRS,b,f,c (i,q s ,l) to, N SRS ap Individual antenna ports (SRS ports) It may be distributed evenly across (split). ap If the value is 2 or more, terminal device 1 transmits power P SRS,b,f,c (i,q s Linear value P of ,l) Hat2 SRS,b,f,c (i,q s ,l) to, N SRS ap / S apThe signal may be evenly distributed (split) across the individual antenna ports (SRS ports). ap If the number is 2 or more, terminal device 1 is the transmission power P SRS,b,f,c (i,q s Linear value P of ,l) Hat2 SRS,b,f,c (i,q s ,l) to one OFDM symbol The signal may be evenly distributed (split) across the antenna ports (SRS ports) configured for the purpose. SRS ap This antenna port may be an antenna port configured for SRS. .

[0361] Terminal device 1 transmits power P SRS,b,f,c (i,q s ,l) may be determined. Transmit power P SRS,b,f,c (i,q s ,l) may be the transmit power for SRS. Transmit power P SRS,b,f,c (i,q s ,l) is SRS It may also be the transmit power for the source. Transmit power P SRS,b,f,c (i,q s ,l) is N SRS ap The transmit power may be for a single antenna port. Transmit power P in transmission opportunity i. SRS,b,f,c (i,q s ,l) may be determined by formula 12. P SRS,b,f,c (i,q s ,l) is S ap It may be constant within an individual OFDM symbol. For example, S ap Power consistency within an individual OFDM symbol, and One or both of the phase continuity may be preserved.

number

[0362] b may be an index for identifying the active BWP or active uplink BWP among one or more BWPs. f may be one of one or more carriers. c may be an index for identifying one carrier. This could also be an index to identify one of the serving cells. In formula 12, b could be the active UL BWP of the carrier f of serving cell c. Terminal device 1 may transmit SRS in active UL BWP b. l may be the power control state (closed loop index). l may be the power control adjustment state (Power It may also be an index for the control adjustment state. l is power control adjustment It may also be a value used to identify a state. Terminal device 1 may maintain two power control states. For example, terminal device 1 may maintain power control states l=0 and l=1. For example, when l is 0, terminal device 1 may maintain one power control state. For example, when l is 1, Terminal device 1 may maintain two power control states. For example, S ap Within each OFDM symbol l may be constant. s This refers to one of one or more SRS resource sets, one SRS resource An index to identify the source set @.

[0363] P CMAX,f,c (i) may be the maximum output power to be set. In means 1, S ap Regardless of the value of P CMAX,f,c (i) may be set. For example, N SRS ap If P is 8, CMAX,f,c (i) may be determined for the eight SRS ports.

[0364] In method 2, Sap If P is 2 or more, CMAX,f,c (i) is N SRS ap / S ap This may be determined for each SRS port. For example, S ap If is 2 or more, and N SRS ap If P is 8, CMAX,f,c (i) is N SRS ap / S ap This may be determined for each SRS port. In means 2, P CMAX,f,c (i) may be the maximum output power set in a single OFDM symbol. For example, N SRS ap / S ap Each SRS port may correspond to the same antenna port group. For example, P CMAX,f,c (i) may be the minimum of several maximum output powers. For example, several maximum output powers Each power level may be determined for one group of antenna ports.

[0365] P O-SRS,b,f,c (q s ) may be determined by the upper layer parameters. The upper layer parameters may be p0. M SRS,b,f,c (i) may be the SRS bandwidth. SRS,b,f,c (i) is, It can also be the number of resource blocks. M SRS,b,f,c (i) S ap It may be constant within each OFDM symbol. α SRS,b,f,c (q s ) may be provided by the upper layer parameter alpha. b,f,c (q d ) may also be DL path loss estimation (estimate). b,f,c (q d ) may also be expressed in dB. q d This may be an index of a Reference Signal (RS) resource. b,f,c (q d) is the RS resource index q d It may also be calculated using PL. b,f,c (q d ), or q d is, S ap It may be constant within an individual OFDM symbol. b,f,c (i,l) is TPC Command It may be determined based on at least the following. b,f,c (i,l) is S ap It may be constant within each OFDM symbol.

[0366] S ap In an OFDM symbol (adjacent OFDM symbol), SRS does not need to be transmitted on multiple uplink carriers. ap In an OFDM symbol (adjacent OFDM symbol), the SRS does not need to be transmitted on multiple uplink carriers.

[0367] A Power Headroom Report (PHR) may be provided. There may be three types of PHRs. Terminal device 1 may determine the PHR. Type 3 PHR is transmitted via SRS. It may be effective for opportunity i. Terminal device 1 may decide that the PHR is based on an actual SRS transmission. An actual SRS transmission is N SRS ap / S ap Even if it is an SRS transmission to an individual SRS port Good. Actual SRS transmission is S ap Individual transmission power P Hat2 SRS,b,f,c (i,q s It may be determined by ,l). Terminal device 1 may calculate Type 3 PHR. For example, terminal device 1 calculates Type 3 PHR as P Tilde CMAX,f,c (i) may be used as the basis for calculation. P Tilde CMAX,f,c (i) S ap to It may be decided without relying on it.

[0368] Figure 9 shows an example of TDM base mapping for SRS according to one aspect of this embodiment. SRS resource 900 may be determined in slot 910. Terminal device 1 is SRS resource The terminal device 1 may transmit S900. The terminal device 1 may transmit an SRS corresponding to the SRS resource 900. Terminal device 1 may transmit an SRS in SRS resource 900. Terminal device 1 may transmit an SRS resource set corresponding to SRS resource 900. SRS resource 900 may be associated with an aperiodic SRS. SRS resource 900 may be associated with a periodic SRS. SRS resource 900 may be associated with a semi-persistent SRS. That is, the resourceType of the SRS resource set containing SRS resource 900 may be set to 'aperiodic', 'semi-persistent', or 'periodic'. SRS resource 900 to which one or more SRS sequences are mapped may be transmitted. -900 may be sent. SRS resource 900 may be indicated by the SRI (SRS Resource Indicator) field in DCI. SRS resource 900 may be identified by SRI. SRS resource 900 may be indicated by a higher-level parameter. For example, the higher-level parameter may be srs-ResourceIndicator or srs-ResourceIndicator2. The usage of the SRS resource set associated with SRS resource 900 may be 'codebook'. The usage of the SRS resource set associated with SRS resource 900 may be 'nonCodebook'. This is also acceptable. The SRS resource 900 may have one, two, four, or eight ports. For example, SRS The SRS ports in resource 900 may be indexed as pi = 1000 + i. SRS resource 900 is one of the K SRS resources included in one SRS resource set. It may be one of the following. One or more SRS parameters for SRS resource 900 are set. This may also be done. For example, SRS-Resource or SRS-PorResource corresponding to SRS resource 900. One or more SRS parameters may be set by the SRS resource 900. It may also be a resource. The SRS resource 900 may be configured by higher-level parameters. For example, the SRS resource 900 may be configured in one serving cell and / or one uplink BWP. The SRS resource 900 may have one spatial domain filter. .

[0369] SRS may be transmitted in SRS resource 900. SRS sequences are sent to resource elements. It may be added. For example, when SRS is transmitted in SRS resource 900, each OFDM syn The volt and the sequences corresponding to each antenna port (SRS sequences) may be mapped to resource elements (physical resources). The SRS resource 900 may be used for SRS transmission. Figure 9 The horizontal axis in Figure 9 may represent the index l of the OFDM symbol. The vertical axis in Figure 9 may represent the index k of the subcarrier.

[0370] Number of consecutive OFDM symbols N for SRS resource 900 SRS symbIt may be 4. The SRS resource 900 may consist of at least OFDM symbol 920, OFDM symbol 921, OFDM symbol 922, and OFDM symbol 923. The SRS resource 900 may occupy at least OFDM symbol 920, OFDM symbol 921, OFDM symbol 922, and OFDM symbol 923. OFDM symbols 920, 921, 922, and 923 may be adjacent OFDM symbols.

[0371] Number of antenna ports (number of SRS ports) for SRS Resource 900: N SRS ap It may be 8. In Figure 9, the number of OFDM symbols S ap It may also be 2. ap This may be determined for SRS resource 900. ap This may be determined for an SRS resource set that includes SRS resource 900.

[0372] SRS resource 900 may consist of SRS ports {1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007}. ap A set of SRS ports may be determined. For example, S ap If is 2, the first SRS port set and the second SRS port set may be determined. For example, S ap If it is 4, then the first SRS port set, the second SRS port set, the third SRS port set, and the fourth The SRS port set and may be determined. In Figure 9, S ap It is not necessary to expect that S is 4. For example, S ap Frequency hopping is performed within each OFDM symbol. It's okay if you don't have any expectations. ap If is 2, the first SRS port set may be mapped to OFDM symbols 920 and 922. apIf is 2, the second SRS port set may be mapped to OFDM symbols 921 and 923. The first SRS port set may include SRS ports {1000, 1001, 1002, 1003}. The second SRS port set may include SRS ports {1004, 1005, 1006, 1007}. The first SRS port set may include SRS ports {1000, 1001, 1004, 1005}. The second SRS port set may include SRS ports {1002, 1003, 1006, 1007}.

[0373] In method A, the number of repetitions (repetition factor) R for the SRS resource 900 is fac is 1 It may be. In method A, in Figure 9, R s R may be 2. s = R fac ×S ap And It is also acceptable to do so. In method A, R s Frequency hopping (or comb offset hopping) may be performed for each symbol. Also, mod(N SRS symb ,R s ) may be 0.

[0374] In method B, the number of repetitions (repetition factor) R for the SRS resource 900 fac is 2 It may be possible. In method B, R fac Frequency hopping (or comb offset hopping) may be performed for each symbol. However, mod(R fac ,S ap ) may be 0.

[0375] The number of subcarriers for SRS resource 900 is M SRS SC,b This is also acceptable. In Figure 9, M SRS SC,b It may also be 4. In Figure 9, the length of the SRS sequence may also be 4.

[0376] For example, up to eight SRS sequences may be mapped to the SRS resource 900. For example, up to eight SRS sequences may be multiplexed in the SRS resource 900.

[0377] For example, part or all of the first SRS series, the second SRS series, the third SRS series, the fourth SRS series, the fifth SRS series, the sixth SRS series, the seventh SRS series, and the eighth SRS series are SRS It may be mapped to resource 900. The first SRS sequence has at least one antenna port. It may be determined based on the following. The second SRS sequence is based at least on the second antenna port. The third SRS sequence may be determined based at least on the third antenna port. The fourth SRS sequence is determined at least based on the fourth antenna port. Alternatively, the fifth SRS sequence may be determined based at least on the fifth antenna port. The sixth SRS sequence may be determined based at least on the sixth antenna port. The seventh SRS sequence may be determined based at least on the seventh antenna port. The eighth SRS sequence may be determined based at least on the eighth antenna port.

[0378] For example, the first antenna port may be 1000. For example, the second antenna port may be 1001. For example, the third antenna port may be 1002. For example, the fourth antenna port may be 1003. For example, the fifth antenna port may be 1004. For example, the sixth antenna port may be 1005. For example, the seventh antenna port may be 1006. For example, the eighth antenna port may be 1007. It is also possible that the first antenna port is 1000. For example, the second antenna port is 1002. For example, the third antenna port is 1004. That's fine. For example, the fourth antenna port may be 1006. For example, the fifth antenna port may be 1001. For example, the sixth antenna port may be 1003. For example, the seventh antenna port may be 1005. For example, the eighth antenna port may be 1007.

[0379] The first SRS sequence may be determined based on at least the 1_1 cyclic shift or the 1_2 cyclic shift. The second SRS sequence is determined based on the 2_1 cyclic shift, This may be determined at least based on the 2_2 cyclic shift. Third SRS sequence The 4th SRS sequence may be determined based on at least the 3_1 cyclic shift or the 3_2 cyclic shift. The 5th SRS sequence is determined based on at least the 4_1 cyclic shift or the 4_2 cyclic shift. Even if determined based on a cyclic shift, or at least on the 5th cyclic shift Good. The sixth SRS sequence may be determined based on at least the cyclic shift of 6_1 or the cyclic shift of 6_2. The seventh SRS sequence is determined by the cyclic shift of 7_1, Alternatively, it may be determined at least based on the cyclic shift of the 7th_2nd SRS. The sequence may be determined based on at least the cyclic shift of 8_1 or the cyclic shift of 8_2. ap If is 2, the first SRS sequence and the fifth SRS sequence may be determined based on the same cyclic shift. ap If is 2, the second SRS sequence and the sixth SRS sequence may be determined based on the same cyclic shift.ap If is 2, the third SRS sequence and the seventh SRS sequence may be determined based on the same cyclic shift. ap If the value is 2, the fourth SRS sequence and the eighth SRS sequence may be determined based on the same cyclic shift.

[0380] The first SRS sequence may be determined based on at least the 1_1 cyclic shift in the OFDM symbols included in OFDM symbol set 920. The first SRS sequence may be determined based on at least the 1_2 cyclic shift in the OFDM symbols included in OFDM symbol set 921. The nth SRS sequence may be determined based on at least the 1_2 cyclic shift in the OFDM symbols included in OFDM symbol set 920. The nth SRS sequence may be determined based at least on the nth cyclic shift. This may be determined based at least on the n_2 cyclic shift in an OFDM symbol included in the OFDM symbol set 921.

[0381] A challenge is that while SRS may be used to measure channel quality, proper port mapping and power control for the 8 SRS ports must be implemented. (Methods A, B, 1) Furthermore, means 2 may be used to solve the problem.

[0382] Terminal device 1 may include a generation unit. For example, the generation unit may generate a baseband signal. Good. The generation unit may generate an SRS sequence (SRS signal, SRS). The transmission unit in terminal device 1 may transmit an SRS. That is, the transmission unit in terminal device 1 transmits an SRS resource. It is also acceptable to transmit an SRS. Transmitting an SRS may also be considered as transmitting an SRS resource. Terminal device 1 It is possible to send SRS in the SRS resource.

[0383] An SRS sequence may be mapped to an SRS resource. The SRS resource may consist of at least a first number of OFDM symbols. For example, the first number of OFDM symbols may be N SRS symb and That's good too.

[0384] Terminal device 1 may include a receiving unit that receives PDCCH. DCI may be placed (mapped) to PDCCH. DCI may indicate an SRS resource. For example, DCI may indicate an SRS resource in the SRI field. Number of SRS ports for the SRS resource N SRS ap This may be any of 1, 2, 4, and 8. The SRS resource is N SRS symb It may consist of individual OFDM symbols.

[0385] If the number of SRS ports is 8, then the 8 SRS ports are S ap Placed in each OFDM symbol This is also good. If the number of SRS ports is 8, then the 8 SRS ports are S ap Across individual OFDM symbols They may be arranged as follows. ap This may be determined by higher-level parameters for the SRS resource set. If the number of SRS ports configured for the SRS resource is not 8, S ap The higher-level parameters that determine this can be ignored.

[0386] Number of iterations R for SRS resources fac It may be set.

[0387] In method A, R s Frequency hopping may be performed for each OFDM symbol. s is R fac and S ap It can also be expressed as a product of R. s Sequence hopping for each OFDM symbol, Some or all of the cyclic shift hopping and comb offset hopping may be performed.

[0388] In method A, each of the multiple (e.g., 8) SRS ports corresponds to the first OFDM symbol set In the first subcarrier set, each of the multiple (e.g., 8) SRS ports may be placed in the second subcarrier set in the second OFDM symbol set. For example, multiple SRS ports placed in the first subcarrier set may be placed in the second Within one OFDM symbol set, R fac They may be arranged repeatedly. For example, multiple SRS ports arranged in the second subcarrier set may be arranged in the second OFDM symbol set. fac rotation They may be arranged in a reverse configuration. For example, multiple SRS ports arranged in the first subcarrier set. The first OFDM symbol set is S ap It may be placed across individual OFDM symbols. For example, multiple SRS ports located on the second subcarrier set are the second OFDM symbol S within the recipe ap It may be placed across individual OFDM symbols.

[0389] In method A, the first OFDM symbol set and the second OFDM symbol set are constructed respectively. The number of OFDM symbols is R s This may also be the case. The first OFDM symbol set and the second OFDM symbol set are each R s It may consist of individual OFDM symbols. SRS symb The OFDM symbols may consist of a first OFDM symbol set and a second OFDM symbol set. In this case, N SRS symb / R s It may also be 2.

[0390] In method A, R s is N SRS symb It is not necessary to expect it to exceed this value. Also, mod(N SRS symb ,R s ) may be 0.

[0391] In method B, R fac Frequency hopping may be performed for each OFDM symbol. Also, R fac Sequence hopping, cyclic shift hopping, and Furthermore, some or all of the comb offset hopping may be performed.

[0392] In method B, each of the multiple (e.g., 8) SRS ports corresponds to the first OFDM symbol set In the first subcarrier set, each of the multiple (e.g., 8) SRS ports may be placed in the second subcarrier set in the second OFDM symbol set. For example, multiple SRS ports placed in the first subcarrier set may be placed in the second Within one OFDM symbol set, R fac / S ap They may be arranged repeatedly. For example, multiple SRS ports arranged in the second subcarrier set may be arranged in the second OFDM symbol set. fac / S ap Multiple SRS ports placed in the first subcarrier set may be arranged in the first OFDM symbol set. ap Even if placed across individual OFDM symbols Good. For example, multiple SRS ports located on a second subcarrier set are a second OFDM. S within the symbol set ap It may be placed across individual OFDM symbols.

[0393] In method B, the first OFDM symbol set and the second OFDM symbol set are constructed respectively. The number of OFDM symbols is R fac This may also be the case. The first OFDM symbol set and the second OFDM symbol set are each R fac It may consist of individual OFDM symbols. SRS symb The OFDM symbols may consist of a first OFDM symbol set and a second OFDM symbol set. In this case, N SRS symb / R fac It may also be 2.

[0394] In method A, R fac is N SRS symb It is not necessary to expect it to exceed this. Also, mod(R fac ,S ap ) may be 0. Also, mod(N SRS symb ,R fac ) may be 0.

[0395] S ap If the value is 2 or greater, cyclic shift hopping and comb offset hopping may not be expected to occur.

[0396] The transmit power may be determined for the SRS resource. The transmit power for the SRS may be determined. The transmit power is P SRS,b,f,c (i,q s ,l) may also be used. Terminal device 1 is P SRS,b,f,c (i,q s You may determine or calculate l).

[0397] In method 1, the transmission power is N SRS ap The transmit power may be determined or calculated for each SRS port. SRS ap Determined or calculated based on at least the number of SRS ports. That's good too.

[0398] In method 1, the transmission power is N SRS ap / S ap The power may be distributed equally among the SRS ports. The linear value of the transmit power is N SRS ap / S ap Distributed equally among the individual SRS ports It is also acceptable. The linear value of the transmitted power is P SRS,b,f,c (i,q s ,l) / √N SRS ap / S ap It may also be √N SRS ap / S ap is N SRS ap / S ap It can also be the square root of .

[0399] In method 1, the maximum value P of the transmission power CMAX,f,c (i) is N SRS ap This may be determined for each SRS port. For example, the maximum transmit power and the transmit power P SRS,b,f,c (i,q s ,l) one or both are N SRS ap An SRS resource or SRS resource set consisting of individual SRS ports. It may be decided for that purpose.

[0400] In method 1, N SRS ap The transmit power may be calculated considering the number of SRS ports. SRS ap ga 8 In this case, the transmit power, or the linear value of the transmit power, is N SRS ap / S ap Evenly distributed across each SRS port The transmit power, or a linear value of the transmit power, may be distributed equally among the SRS ports set in one OFDM symbol. SRSap If it is not 8, the transmission power or the linear value of the transmission power is N SRS ap equally distributed to N SRS ports (configured antenna ports).

[0401] In means 2, the transmission power is N SRS ap / S ap determined or calculated for N SRS ap / S ap SRS ports, and may be determined or calculated based at least on N SRS ports.

[0402] In means 2, the transmission power is N SRS ap / S ap equally distributed to N SRS ap / S ap SRS ports. The linear value of the transmission power is N equally distributed to N SRS,b,f,c (i,q s ,l) / √N SRS ap / S ap and may be √N SRS ap / S ap which may be the square root of N SRS ap / S ap .

[0403] In means 2, the maximum value P CMAX,f,c (i) of the transmission power may be determined for N SRS ap / S ap SRS ports. For example, one or both of the maximum value of the transmission power and the transmission power P SRS,b,f,c (i,q s ,l) are N SRS apAn SRS resource composed of SRS ports, or an SRS resource set For bits, N SRS ap / S ap It may be determined considering the SRS ports.

[0404] In means 2, the transmission power may be calculated considering N SRS ap / S ap the SRS ports. If N SRS ap is 8, the transmission power, or the linear value of the transmission power, may be evenly distributed to N SRS ap / S ap the SRS ports. The transmission power, or the linear value of the transmission power, may be evenly distributed to the SRS ports set in 1 OFDM symbol. Also, if N SRS ap is not 8, the transmission power, or the linear value of the transmission power, may be evenly distributed to N SRS ap the SRS ports (antenna ports to be set) The maximum value of the transmission power may be the minimum maximum output power determined for N SRS ap / S ap the SRS ports. The maximum value of the transmission power may be the minimum value among the multiple maximum output powers determined for N the SRS ports. The maximum value of the transmission power may be referred to as the maximum output power. SRS ap / S ap the SRS ports. It may also be the minimum value among the multiple maximum output powers determined for N the SRS ports. The maximum value of the transmission power may be called the maximum output power.

[0405] The maximum output power may be determined based on N SRS ap and S ap For example, if N SRS ap is 8, the first maximum output power may be used. For example, if N SRS ap is not 8, the second The maximum output power of N may be used. For example, N SRS ap If is 8, and S ap 2 or more If this is the case (i.e., when TDM base mapping is applied), then the first maximum output power is It may be used. For example, N SRS ap If is 8, and S ap If the value is 1 (i.e., TDM base mapping is not applied), a second maximum output power may be used.

[0406] The following describes various aspects of the apparatus according to one embodiment of this invention.

[0407] The programs that run on the base station device 3 and terminal device 1 according to the present invention may be programs that control the CPU (Central Processing Unit) and the like (programs that make the computer function) in order to realize the functions of the above embodiment according to the present invention. The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing. The data is then stored in various types of ROMs such as Flash ROM (Read Only Memory) or HDD (Hard Disk Drive), and read, modified, and written by the CPU as needed.

[0408] Furthermore, the terminal device 1 and a part of the base station device 3 in the above-described embodiment may be implemented using a computer. In that case, the program for implementing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read by a computer system and executed.

[0409] Furthermore, the term "computer system" as used herein refers to a computer system built into terminal device 1 or base station device 3, and includes hardware such as the OS and peripheral devices. Also, "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, and hard disks built into computer systems. This refers to memory devices such as 3D cards.

[0410] Furthermore, "computer-readable recording media" may include those that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or communication lines such as telephone lines, as well as those that hold programs for a certain period of time, such as volatile memory inside a computer system that acts as a server or client in such cases. In addition, the above-mentioned program may be for the purpose of realizing some of the functions described above, and may also be a program that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0411] Furthermore, the base station device 3 in the above-described embodiment can also be realized as an assembly (device group) composed of multiple devices. Each device constituting the device group may have some or all of the functions or functional blocks of the base station device 3 related to the above-described embodiment. The device group only needs to have a complete set of the functions or functional blocks of the base station device 3. In addition, the terminal device 1 related to the above-described embodiment can also communicate with the base station device as an assembly.

[0412] Furthermore, the base station device 3 in the above-described embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGen RAN, NR RAN). Also, the base station device 3 in the above-described embodiment may be eNodeB and / or gNB. It may possess some or all of the functions of the corresponding higher-level node.

[0413] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiment may be implemented as LSIs, which are typically integrated circuits, or as chipsets. Each functional block of terminal device 1 and base station device 3 may be individually chipped, or some or all of them may be integrated into a single chip. Furthermore, the integrated circuit method is not limited to LSIs; dedicated circuits may also be used. Alternatively, it can be implemented with a general-purpose processor. Furthermore, advances in semiconductor technology may replace LSIs. If the technology for integrated circuit integration emerges, it will also be possible to use integrated circuits that utilize that technology.

[0414] Furthermore, although the above-described embodiment mentions a terminal device as an example of a communication device, the present invention is not limited to this and can also be applied to stationary or non-movable electronic devices installed indoors or outdoors, such as terminal devices or communication devices for AV equipment, kitchen equipment, cleaning and washing machines, air conditioning equipment, office equipment, vending machines, and other household appliances.

[0415] While embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like that do not depart from the gist of this invention are also included. Furthermore, the present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of this invention. In addition, configurations in which elements described in each of the above embodiments that produce similar effects are substituted for each other are also included. [Explanation of symbols]

[0416] 1 (1A, 1B, 1C) Terminal device 3 Base station equipment 10, 30 Wireless Transceiver Unit 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 Wireless Resource Control Layer Processing Unit 91, 92, 93, 94 Search area set 300 Component Carrier 301 Primary Cell 302, 303 Secondary Cells Set of resource elements for 700 PSS Set of resource elements for 710, 711, 712, 713 PBCH and DMRS for PBCH Set of resource elements for 720 SSS 3000 points 3001, 3002 Resource Grid 3003, 3004 BWP 3011, 3012, 3013, 3014 Offset 3100, 3200 Common Resource Block Sets 900 SRS resources 910 slots 920, 921, 922, 923 OFDM symbols

Claims

1. A transmission unit that transmits SRS resources, The system includes a receiver that receives the PDCCH on which the DCI is located, The DCI directs the SRS resource, The number of SRS ports for the aforementioned SRS resource is 8. The aforementioned SRS resource consists of N OFDM symbols, The eight SRS ports are arranged across S OFDM symbols, The number of iterations R is set for the aforementioned SRS resource. Each of the eight SRS ports is located in the first subcarrier set in the first OFDM symbol set. Each of the eight SRS ports is located in the second subcarrier set in the second OFDM symbol set. Each of the first OFDM symbol set and the second OFDM symbol set consists of R × S OFDM symbols. mod(N, R×S) is 0. Terminal device.

2. A transmission unit that transmits SRS resources, The system includes a receiver that receives the PDCCH on which the DCI is located, The DCI directs the SRS resource, The number of SRS ports for the aforementioned SRS resource is 8. The aforementioned SRS resource consists of N OFDM symbols, The eight SRS ports are arranged across S OFDM symbols, The number of iterations R is set for the aforementioned SRS resource. Each of the eight SRS ports is located in the first subcarrier set in the first OFDM symbol set. Each of the eight SRS ports is located in the second subcarrier set in the second OFDM symbol set. Each of the first OFDM symbol set and the second OFDM symbol set consists of R OFDM symbols, mod(N, R) is 0, mod(R, S) is 0. Terminal device.

3. A receiving unit that receives SRS resources, The system includes a transmitter that transmits the PDCCH on which the DCI is located, The DCI directs the SRS resource, The number of SRS ports for the aforementioned SRS resource is 8. The aforementioned SRS resource consists of N OFDM symbols, The eight SRS ports are arranged across S OFDM symbols, The number of iterations R is set for the aforementioned SRS resource. Each of the eight SRS ports is located in the first subcarrier set in the first OFDM symbol set. Each of the eight SRS ports is located in the second subcarrier set in the second OFDM symbol set. Each of the first OFDM symbol set and the second OFDM symbol set consists of R × S OFDM symbols. mod(N, R×S) is 0. Base station equipment.

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