Terminal device, base station device, and communication method

Abstract

The terminal device of the present application is provided with: a receiving section that receives a PDCCH including a DCI format for scheduling of a PDSCH and the PDSCH; and a transmitting section that transmits a HARQ-ACK through a PUCCH, gives an index of a downlink reference signal based on a control resource set in which a PDCCH is detected, the index of the downlink reference signal being QCL with respect to an antenna port of a downlink reference signal associated with the PDSCH.

Description

Technical Field

[0001] This invention relates to terminal devices, base station devices, and communication methods.

[0002] This application claims priority to Japanese Patent Application No. 2017-169478, filed in Japan on September 4, 2017, the contents of which are incorporated herein by reference. Background Technology

[0003] The 3rd Generation Partnership Project (3GPP) discusses radio access methods and radio networks for cellular mobile communications (hereinafter referred to as "Long Term Evolution (LTE)" or "EUTRA: Evolved Universal Terrestrial Radio Access"). 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 that uses a cellular configuration to cover multiple areas covered by base station equipment. A single base station equipment can also manage multiple serving cells.

[0004] Within 3GPP, discussions are underway regarding the next-generation standard (NR: New Radio) in order to propose the standard for the next-generation mobile communication system developed by the International Telecommunication Union (ITU), namely IMT (International Mobile Telecommunication)-2020 (Non-Patent Document 1). NR requires meeting the requirements of three scenarios within a single technical architecture: eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication).

[0005] Regarding NR, PUCCH (Physical Uplink Control Channel) is being explored for use in responding to downlink transmissions (e.g., HARQ-ACK) (Non-Patent Documents 2, 3).

[0006] Existing technical documents

[0007] Non-patent literature

[0008] Non-patent literature 1: “New SID proposal: Study on New Radio Access Technology”, RP-160671, NTT docomo, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th-10th March, 2016.

[0009] Non-Patent Document 2: “Multi-beam control operation”, R1-1713420, Qualcomm Incorporated, 3GPP TSG RAN Meeting #90, Prague, Czech Republic, 21st-25th August, 2017.

[0010] Non-patent literature 3: “HARQ-ACK Feedback Timing”, R1-1713644, Samsung, 3GPP TSGRAN Meeting #90, Prague, Czech Republic, 21st-25th August, 2017.

[0011] Summary of the invention

[0012] The problem that the invention aims to solve

[0013] One aspect of the present invention provides a terminal device for efficient communication, a communication method for the terminal device, a base station device for efficient communication, and a communication method for the base station device.

[0014] Solution for solving the problem

[0015] (1) The first aspect of the present invention is a terminal device comprising: a receiving unit that receives a PDCCH in DCI format including scheduling of the PDSCH and the PDSCH; and a transmitting unit that transmits HARQ-ACK via PUCCH and provides an index of a downlink reference signal based on a control resource set for detecting the PDCCH, wherein the index of the downlink reference signal and the antenna port of the downlink reference signal associated with the PDSCH are QCL.

[0016] (2) A second aspect of the present invention is a base station apparatus comprising: a transmitting unit that transmits a PDCCH in DCI format including a PDSCH for scheduling the PDSCH and the PDSCH; and a receiving unit that receives a HARQ-ACK via a PUCCH and provides an index of a downlink reference signal based on a control resource set for detecting the PDCCH, wherein the index of the downlink reference signal and the antenna port of the downlink reference signal associated with the PDSCH are QCLs.

[0017] (3) The third aspect of the present invention is a communication method for a terminal device, comprising the following steps: receiving a PDCCH in DCI format including scheduling for PDSCH and the PDSCH; and sending HARQ-ACK via PUCCH, providing an index of a downlink reference signal based on the control resource set for detecting the PDCCH, wherein the index of the downlink reference signal and the antenna port of the downlink reference signal associated with the PDSCH are QCL.

[0018] (4) The fourth aspect of the present invention is a communication method for a base station device, comprising the following steps: transmitting a PDCCH in DCI format including scheduling for PDSCH and the PDSCH; and receiving HARQ-ACK through PUCCH, providing an index of a downlink reference signal based on the control resource set for detecting the PDCCH, wherein the index of the downlink reference signal and the antenna port of the downlink reference signal associated with the PDSCH are QCL.

[0019] (5) A fifth aspect of the present invention is a terminal device comprising: a receiving unit that monitors a PDCCH in one or more CORESETs and receives a PDSCH based on the detection of the PDCCH; and a transmitting unit that selects a PUCCH resource from a PUCCH resource set and transmits a HARQ-ACK for the PDSCH using the one PUCCH resource, wherein the one PUCCH resource set is selected from a plurality of PUCCH resource sets associated with the PUCCH resource based on at least some or all of conditions 1, 2, 3, 4 and 5, wherein condition 1 is a CORESET for detecting the PDCCH, condition 2 is a search space for detecting the PDCCH, condition 3 is a first beam parameter for the PDSCH, condition 4 is a second beam parameter for the PDCCH, and condition 5 is a HARQ process ID associated with the PDSCH, and the plurality of PUCCH resource sets each include one or more PUCCH resources.

[0020] (6) A sixth aspect of the present invention is a terminal device comprising a receiving unit that monitors a PDCCH in one or more CORESETs and receives a PDSCH based on the detection of the PDCCH. A first beam parameter for the PDSCH is given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0021] (7) The seventh aspect of the present invention is a terminal device comprising a receiving unit that monitors a PDCCH in one or more CORESETs, receives a PDSCH based on the detection of the PDCCH, and selects a first beam parameter for the PDSCH from a beam parameter set, the beam parameter set being given at least based on some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0022] (8) An eighth aspect of the present invention is a base station apparatus comprising: a transmitting unit that transmits a PDSCH and transmits a PDCCH including scheduling information of the PDSCH in a CORESET; and a receiving unit that receives a PUCCH transmitted using a PUCCH resource selected from a PUCCH resource set and including HARQ-ACK for the PDSCH, wherein the PUCCH resource set is selected from a plurality of PUCCH resource sets associated with the PUCCH resource based at least some or all of conditions 1, 2, 3, 4 and 5, wherein condition 1 is a CORESET for detecting the PDCCH, condition 2 is a search space for detecting the PDCCH, condition 3 is a first beam parameter for the PDSCH, condition 4 is a second beam parameter for the PDCCH, and condition 5 is a HARQ process ID associated with the PDSCH, and the plurality of PUCCH resource sets each include one or more PUCCH resources.

[0023] (9) The ninth aspect of the present invention is a base station apparatus comprising a transmitting unit that transmits a PDSCH and transmits a PDCCH including scheduling information of the PDSCH in a CORESET. The first beam parameter for the PDSCH is given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is the second beam parameter for the PDCCH.

[0024] (10) The tenth aspect of the present invention is a base station apparatus comprising a transmitting unit that transmits a PDSCH, transmits a PDCCH including scheduling information of the PDSCH in a CORESET, and selects a first beam parameter for the PDSCH from a beam parameter set, wherein the beam parameter set is given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0025] (11) The eleventh aspect of the present invention is a communication method for a terminal device, comprising the following steps: monitoring a PDCCH in one or more CORESETs, receiving a PDSCH based on the detection of the PDCCH; and selecting a PUCCH resource from a PUCCH resource set, sending a HARQ-ACK for the PDSCH using the one PUCCH resource, wherein the one PUCCH resource set is selected from multiple PUCCH resource sets associated with the PUCCH resource based on at least some or all of conditions 1, 2, 3, 4 and 5, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, condition 3 is a first beam parameter for the PDSCH, condition 4 is a second beam parameter for the PDCCH, and condition 5 is a HARQ process ID associated with the PDSCH, and the multiple PUCCH resource sets each include one or more PUCCH resources.

[0026] (12) The twelfth aspect of the present invention is a communication method for a terminal device, comprising the steps of monitoring a PDCCH in one or more CORESETs and receiving a PDSCH based on the detection of the PDCCH, wherein a first beam parameter for the PDSCH is given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0027] (13) The thirteenth aspect of the present invention is a communication method for a terminal device, comprising the steps of monitoring a PDCCH in one or more CORESETs and receiving a PDSCH based on the detection of the PDCCH, selecting a first beam parameter for the PDSCH from a beam parameter set, the beam parameter set being given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0028] (14) The fourteenth aspect of the present invention is a communication method for a base station device, comprising the following steps: transmitting a PDSCH, transmitting a PDCCH including scheduling information of the PDSCH in a CORESET; and receiving a PUCCH transmitted using a PUCCH resource selected from a PUCCH resource set and including HARQ-ACK for the PDSCH, wherein the PUCCH resource set is selected from a plurality of PUCCH resource sets associated with the PUCCH resource based at least some or all of conditions 1, 2, 3, 4 and 5, wherein condition 1 is a CORESET for detecting the PDCCH, condition 2 is a search space for detecting the PDCCH, condition 3 is a first beam parameter for the PDSCH, condition 4 is a second beam parameter for the PDCCH, and condition 5 is a HARQ process ID associated with the PDSCH, and the plurality of PUCCH resource sets each include one or more PUCCH resources.

[0029] (15) The fifteenth aspect of the present invention is a communication method for a base station device, comprising the steps of transmitting a PDSCH and transmitting a PDCCH including scheduling information of the PDSCH in a CORESET, wherein a first beam parameter for the PDSCH is given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0030] (16) The sixteenth aspect of the present invention is a communication method for a base station device, comprising the steps of transmitting a PDSCH, transmitting a PDCCH including scheduling information of the PDSCH in a CORESET, selecting a first beam parameter for the PDSCH from a beam parameter set, the beam parameter set being given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0031] Invention Effects

[0032] According to one aspect of the present invention, the terminal device can perform communication efficiently. Furthermore, the base station device can perform communication efficiently. Attached Figure Description

[0033] Figure 1 This is a conceptual diagram of a wireless communication system according to one embodiment of this invention.

[0034] Figure 2 N represents one embodiment of this method. slot symb An example of the relationship between the subcarrier spacing setting μ, the time slot setting, and the CP setting.

[0035] Figure 3 This is a schematic diagram illustrating an example of a resource grid in a subframe of one embodiment of this work.

[0036] Figure 4 This diagram illustrates an example of the configuration of the PUCCH resource set in a serving cell according to one embodiment of this invention.

[0037] Figure 5 This is a diagram illustrating an example of the setting of the PUCCH resource set in carrier aggregation of one embodiment of this invention.

[0038] Figure 6 This diagram illustrates an example of the PUCCH resource set configuration in a scenario where there are two PUCCH groups, as described in this embodiment.

[0039] Figure 7 This is a diagram illustrating an example of a communication method between TRP#1 and UE#1 in one embodiment of this invention.

[0040] Figure 8 This is a diagram illustrating an example of the relationship between downlink signals and their identifiers in one embodiment of this invention.

[0041] Figure 9This is a diagram illustrating an example of a communication method between TRP#1 and UE#1 in one embodiment of this invention.

[0042] Figure 10 This diagram illustrates an example of the communication method between TRP#1, TRP#2, and UE#1 in one embodiment of this invention.

[0043] Figure 11 This is a diagram illustrating an example of the communication method of TRP#1, TRP#2, and UE#1 in one embodiment of this invention.

[0044] Figure 12 This is a schematic block diagram illustrating the configuration of a terminal device 1 according to one embodiment of this invention.

[0045] Figure 13 This is a schematic block diagram illustrating the configuration of a base station device 3 according to one embodiment of this invention. Detailed Implementation

[0046] The embodiments of the present invention will be described below.

[0047] Figure 1 This is a conceptual diagram of a wireless communication system according to one embodiment of this invention. Figure 1 In this wireless communication system, there are terminal devices 1A to 1C and base station device 3. Hereinafter, terminal devices 1A to 1C will also be referred to as terminal device 1.

[0048] The frame structure will be explained below.

[0049] In one embodiment of the wireless communication system, at least OFDM (Orthogonal Frequency Division Multiplexing) is used. An OFDM symbol, which serves as the time-domain unit of OFDM, includes at least one or more subcarriers, which are converted into a time-continuous signal during baseband signal generation.

[0050] Subcarrier spacing (SCS) can be determined by subcarrier spacing Δf = 2. μ • Given at 15kHz. For example, μ can be any value from 0 to 5. For the carrier bandwidth part, the μ used to set the subcarrier spacing can also be given by the upper-layer parameter (the subcarrier spacing setting μ).

[0051] In one embodiment of the wireless communication system, the time unit T is used. sTo represent the length of the time domain. The time unit is T. s Through T s =1 / (Δf) max ·N f ) is given. Δf max This can be the maximum subcarrier spacing supported in a wireless communication system according to one embodiment of this invention. Δf max It can also be Δf max = 480kHz. Time unit T s Also known as T s The constant κ is κ = Δf max ·N f / (Δf ref N f，ref ) = 64. Δf ref It is 15kHz, N f，ref It is 2048.

[0052] The constant κ can also represent the relationship between the reference subcarrier spacing and T. s The value of the relationship. The constant κ can be used for the length of the subframe. The number of time slots included in the subframe can be given at least based on the constant κ. Δf ref It is the reference subcarrier spacing, N f，ref It is the value corresponding to the reference subcarrier spacing.

[0053] Downlink and / or uplink transmissions consist of frames of 10 ms in length. Each frame comprises 10 subframes. Each subframe is 1 ms long. The frame length can also be independent of the subcarrier spacing Δf. That is, the frame configuration can be independent of μ.

[0054] The number and index of the time slots included in the subframe can also be given for setting the subcarrier spacing configuration (μ). For example, the first time slot number n μ s Within a subframe, it can be from 0 to N. subframe ，μ slot The ranges are given in ascending order. The number of time slots included in the frame and their indices can also be given for setting the subcarrier spacing μ. For example, the second time slot number n... μ s，f Within a frame, it can be from 0 to N. frame，μ slot The ranges are given in ascending order. Consecutive N... slot symb One OFDM symbol can be included in one time slot. N slot symbIt can also be based on at least some or all of the slot configuration and CP (Cyclic Prefix) settings. The slot configuration can be given by the upper-level parameter slot_configuration. The CP setting can be based at least on the upper-level parameter.

[0055] Figure 2 N represents one embodiment of this method. slot symb An example of the relationship between the subcarrier spacing setting μ, the time slot setting, and the CP setting. Figure 2 In Figure A, with the time slot set to 0 and CP set to normal CP (normal cyclic prefix), N slot symb =14, N frame，μ slot =40, N subframe，μ slot =4. Furthermore, in Figure 2 In Figure B, with the time slot set to 0 and CP set to extended cyclic prefix, N slot symb =12, N frame，μ slot =40, N subframe，μ slot =4. N when time slot is set to 0 slot symb It can also correspond to N when the time slot is set to 1. slot symb 2 times.

[0056] The following is an explanation of physical resources.

[0057] An antenna port is defined as a channel that transmits symbols at one antenna port, which can be estimated based on the channel that transmits other symbols at the same antenna port. When the large-scale property of the channel transmitting symbols at one antenna port can be estimated based on the channel transmitting symbols at another antenna port, the two antenna ports are referred to as QCL (Quasi Co-Located). The large-scale property can also be a long-range characteristic of the channel. The large-scale property can include at least some or all of the following: delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. The QCL of the first and second antenna ports with respect to the beam parameters can also mean that the receiver's assumed receive beam for the first antenna port is the same as the receiver's assumed receive beam for the second antenna port. Similarly, the QCL of the first and second antenna ports with respect to the beam parameters can also mean that the receiver's assumed transmit beam for the first antenna port is the same as the receiver's assumed transmit beam for the second antenna port. Terminal device 1 may also assume that the two antenna ports are QCLs if the wide-area properties of the channel transmitting symbols at one antenna port can be estimated based on the channel transmitting symbols at the other antenna port. The assumption that the two antenna ports are QCLs is also valid.

[0058] Given N μ RB，x N RB sc Subcarriers and N (μ) symb N subframe，μ symb A resource grid of OFDM symbols is used for setting the subcarrier spacing and carrier set for each subcarrier. N μ RB，x This can represent the number of resource blocks given by the subcarrier spacing μ used for carrier x. Carrier x represents either a downlink carrier or an uplink carrier. That is, x is "DL" or "UL". N μ RB It includes N μ RB，DL and N μ RB，UL The name. N RB scThis can represent the number of subcarriers included in a resource block. Alternatively, a resource grid can be given according to the setting of each antenna port p and / or each subcarrier spacing μ and / or each transmission direction. The transmission direction includes at least a downlink (DL) and an uplink (UL). Hereinafter, the set of parameters that includes at least some or all of the antenna port p, the subcarrier spacing setting μ, and the transmission direction setting will be referred to as the first radio parameter set. That is, a resource grid can also be given for each first radio parameter set.

[0059] Each element in the resource grid given according to each first wireless parameter set is called a resource element. A resource element is determined by its frequency domain index k and its time domain index 1. A resource element determined by its frequency domain index k and its time domain index 1 is also called a resource element (k, 1). The frequency domain index k represents 0 to N. μ RB N RB sc Any one of -1. N μ RB This can be the number of resource blocks given for setting the subcarrier spacing μ. N RB sc N is the number of subcarriers included in the resource block. RB sc =12. The frequency domain index k can also correspond to the subcarrier index. The time domain index 1 can also correspond to the OFDM symbol index.

[0060] Figure 3 This is a schematic diagram illustrating an example of a resource grid in a subframe of one embodiment of this work. Figure 3 In the resource grid, the horizontal axis represents the time domain index 1, and the vertical axis represents the frequency domain index k. Within a subframe, the frequency domain of the resource grid can include N. μ RB N RB sc The time domain of the resource grid can include 14.2 subcarriers. μ -1 OFDM symbol. The resource block includes N RB sc A resource block is composed of several subcarriers. The time domain of a resource block can also correspond to an OFDM symbol. The time domain of a resource block can also correspond to one or more time slots. The time domain of a resource block can also correspond to a subframe.

[0061] The terminal device can instruct to use only a subset of the resource grid for transmission and reception. This subset, also known as the carrier frequency band portion, can be specified by parameters from the upper layer. In other words, the terminal device may not instruct to use the entire set of the resource grid for transmission and reception. Alternatively, it may instruct to use only a portion of the resources within the resource grid.

[0062] The parameters of the upper layer are those included in the signals of the upper layer. The upper layer signals can be RRC (Radio Resource Control) signaling or MAC CE (Media Access Control Control Element). Here, the upper layer signals can be signals from the RRC layer or signals from the MAC layer.

[0063] The physical channels and physical signals of various schemes in this embodiment will be described below.

[0064] An uplink physical channel can correspond to a set of resource elements that transmit information generated at the upper layer. An uplink physical channel is a physical channel used in the uplink. In one embodiment of the wireless communication system, at least some or all of the following uplink physical channels are used.

[0065] • PUCCH (Physical Uplink Control Channel)

[0066] • PUSCH (Physical Uplink Shared Channel)

[0067] • PRACH (Physical Random Access Channel)

[0068] PUCCH can be used to transmit uplink control information (UCI). Uplink control information includes some or all of the HARQ-ACK (Hybrid Automatic Repeat request ACK) for downlink physical channels (Channel State Information (CSI), Scheduling Request (SR), and downlink data (TB, Medium Access Control Protocol Data Unit, DL-SCH, and PDSCH)). HARQ-ACK can represent either an ACK (acknowledgment) or a NACK (negative-acknowledgment) corresponding to the downlink data.

[0069] HARQ-ACK can also represent ACK or NACK corresponding to one or more CBGs (Code Block Groups) included in the downlink data. HARQ-ACK is also referred to as HARQ feedback, HARQ information, HARQ control information, and ACK / NACK.

[0070] A scheduling request can be used at least to request PUSCH (UL-SCH: Uplink-Shared Channel) resources for initial transmission.

[0071] Channel State Information (CSI) includes at least a Channel Quality Indicator (CQI) and a Rank Indicator (RI). The CQI may include a Precoder Matrix Indicator (PMI). The CQI is an indicator associated with channel quality (transmission strength), and the PMI indicates precoding. The RI indicates the transmission rank (or transmission layer number).

[0072] There are four possible PUCCH formats. PUCCH format 0 is a PUCCH format for transmitting UCIs based on sequence selection. In PUCCH format 0, a set of sequences for PUCCH format 0 is defined. This set of sequences includes one or more sequences for PUCCH format 0. From one or more sequences for PUCCH format 0, a sequence for PUCCH format 0 is selected at least based on bit blocks. The selected sequence for PUCCH format 0 is mapped to the uplink physical channel and transmitted. Bit blocks can be given by UCIs. Bit blocks can also correspond to UCIs. In PUCCH format 0, the number of bits M in a bit block can also be used. bit <3. In PUCCH format 0, the number of OFDM symbols in PUCCH can be one or two.

[0073] The selected sequence for PUCCH format 0 may also be multiplied by a specified power reduction factor (or amplitude reduction factor). The selected sequence for PUCCH format 0 is mapped from the resource elements (k, 1) for PUCCH format 0 in ascending order with respect to k. The specified power reduction factor is used at least for transmit power control.

[0074] PUCCH format 1 is a format for transmitting UCI PUCCHs through modulation of a sequence used in PUCCH format 1. A bit block contains M bits. bit Even when M=1, modulation can be achieved using BPSK (Binary Phase Shift Keying) to generate complex-valued modulation symbols d(0). The number of bits M contained in a bit block... bit When the value is 2, modulation can also be performed using QPSK (Quadrature Phase Shift Keying) to generate complex-valued modulation symbols d(0). In PUCCH format 0, this can also be the number of bits M in the bit block. bit <3. In PUCCH format 1, the number of OFDM symbols in PUCCH can be 3 or more. In PUCCH format 1, the number of OFDM symbols in PUCCH can also be 4 or more.

[0075] The complex-valued modulation symbol d(0) can also be multiplied by the sequence r used in PUCCH format 1. (ap) u，v The block y that generates complex-valued modulation symbols (p) (0) to y (p) (N PUcCH seq -1). The complex-valued modulation symbol d(0) can also be based on the following formula (1), multiplied by the sequence r used for PUCCH format 1.(αp) u，v The block y that generates complex-valued modulation symbols (p) (0) to y (p) (N PUCCH seq -1).

[0076]

[0077] In formula (1), n ​​represents 0 to N. PUCCH seq The range of values ​​is -1. N PUCCH seq It can also correspond to the length of the sequence used for PUCCH format 1.

[0078] Block y of complex-valued modulation symbols (p) (0) to y (p) (N PUCCH seq -1) It can also be multiplied by an orthogonal sequence w (p) n The output sequence z for PUCCH format 1 is generated. (p) (n). Block y of complex-valued modulation symbols (p) (0) to y (p) (N PUCCH seq -1) It can also be based on the following formula (2), multiplied by the orthogonal sequence w (p) n The output sequence z for PUCCH format 1 is generated. (p) (n).

[0079]

[0080] In formula (2), m represents 0 to N. PUCCH SF The range of values ​​is -1. In formula (2), n represents 0 to N. PUCCH seq The range of values ​​is -1. N PUCCH SF It can also be used with orthogonal sequences w for PUCCH format 1. (p) n The length corresponds to.

[0081] Output sequence z for PUCCH format 1 (p) (n) can also be multiplied by a specified power reduction factor. This is used for the output sequence z in PUCCH format 1. (p)(n) is a frequency-first mapping from the resource elements (k, l) used for PUCCH format 1, excluding the specified resource elements. Frequency-first mapping is also called frequency-first mapping. Frequency-first mapping can also involve mapping first in ascending order related to k, then in ascending order related to 1. The specified resource elements may also include at least the ULDMRS associated with the PUCCH transmitted based on PUCCH format 1. The specified resource elements may also include at least the resource elements with SRS set. The specified resource elements may also include at least the reserved resources. Reserved resources may also be resources for which the terminal device 1 does not assume which signal to transmit and / or which signal not to transmit. Reserved resources may also be resources for which the terminal device at least does not assume channel transmission. Reserved resources may also be resources for which the terminal device at least does not assume channel measurement. Reserved resources may also be resources for which the terminal device at least assumes channel transmission is allowed. Reserved resources based at least on upper-layer parameter settings may also be replaced by reserved resource settings based on DCI indications. When setting the reserved resources based on upper-level parameters and DCI indicators, the setting of reserved resources based on DCI indicators can be given priority.

[0082] PUCCH format 2 is a format for transmitting UCI PUCCH based on the modulation of a sequence used for PUCCH format 2. Bit blocks can also be generated based on, for example, modulation to produce an output sequence z for PUCCH format 2. (p) (n). In PUCCH format 2, it can also be the number of bits M in a bit block. bit >2. In PUCCH format 2, the number of OFDM symbols in PUCCH can be one or two.

[0083] The resource element mapping used for PUCCH format 2 is the same as that used for PUCCH format 1, so detailed descriptions are omitted.

[0084] PUCCH format 3 is a format for transmitting UCI PUCCH through modulation of a sequence used in PUCCH format 3. Bit blocks can also be generated based on, for example, modulation to produce an output sequence z for PUCCH format 3. (p) (n). In PUCCH format 3, it can also be the number of bits M in a bit block. bit >2. In PUCCH format 3, the number of OFDM symbols in PUCCH can be 3 or more. In PUCCH format 3, the number of OFDM symbols in PUCCH can also be 4 or more.

[0085] The resource element mapping used for PUCCH format 3 is the same as that used for PUCCH format 1, so detailed descriptions are omitted.

[0086] PUSCH is used to transmit uplink data (TB, MAC PDU, UL-SCH, PUSCH). PUSCH can also be used to transmit HARQ-ACK and / or channel state information along with uplink data. Furthermore, PUSCH can also be used to transmit only channel state information or only HARQ-ACK and channel state information. PUSCH is used to transmit random access messages.

[0087] PRACH is used to send the random access preamble (Random Access Message 1). PRACH is used to indicate the initial connection establishment process, handover process, connection re-establishment process, synchronization (timing adjustment) for uplink data transmission, and requests for PUSCH (UL-SCH) resources. The random access preamble can be used to notify the base station device 3 of the index (random access preamble index) provided by the upper layer of terminal device 1.

[0088] A random access preamble can be derived by cyclically shifting the Zadoff-Chu sequence corresponding to the physical root sequence index u. The Zadoff-Chu sequence can be generated based on the physical root sequence index u. Multiple random access preambles can also be defined within a serving cell. A random access preamble can also be determined at least based on its index. Different random access preambles corresponding to different indices can also correspond to different combinations of the physical root sequence index u and the cyclic shift. The physical root sequence index u and the cyclic shift can also be derived at least based on information included in the system information. The physical root sequence index u can also be an index used to identify the sequence included in the random access preamble. A random access preamble can also be determined at least based on the physical root sequence index u.

[0089] exist Figure 1 In uplink wireless communication, the following uplink physical signals are used. These uplink physical signals may not be used to transmit information output from the upper layer, but are instead used by the physical layer.

[0090] • UL DMRS (Uplink Demodulation Reference Signal)

[0091] • SRS (Sounding Reference Signal)

[0092] • UL PTRS (Uplink Phase Tracking Reference Signal)

[0093] UL DMRS is associated with the transmission of PUSCH and / or PUCCH. UL DMRS is multiplexed with PUSCH or PUCCH. Base station device 3 can use UL DMRS for transmission path correction of PUSCH or PUCCH. Hereinafter, the UL DMRS associated with the PUSCH will be referred to only as the PUSCH transmission. Hereinafter, the UL DMRS associated with the PUCCH will be referred to only as the PUCCH transmission. The UL DMRS associated with the PUSCH is also referred to as the PUSCH UL DMRS. The UL DMRS associated with the PUCCH is also referred to as the PUCCH UL DMRS.

[0094] SRS can be transmitted independently of PUSCH or PUCCH. Base station device 3 can also use SRS to measure channel state. SRS can also be transmitted in the last or last specified number of OFDM symbols of a subframe in an uplink time slot.

[0095] A UL PTRS can be a reference signal used at least for phase tracking. A UL PTRS can also be associated with a UL DMRS group that includes at least one antenna port for one or more UL DMRSs. The association of a UL PTRS with a UL DMRS group can also be that the antenna port of the UL PTRS and some or all of the antenna ports included in the UL DMRS group are at least QCLs. A UL DMRS group can also be identified at least based on the antenna port with the smallest index among the UL DMRSs included in the UL DMRS group.

[0096] exist Figure 1 In the downlink wireless communication from base station device 3 to terminal device 1, the following downlink physical channel is used. The downlink physical channel is used by the physical layer to transmit information output from the upper layer.

[0097] ·PBCH (Physical Broadcast Channel)

[0098] • PDCCH (Physical Downlink Control Channel)

[0099] • PDSCH (Physical Downlink Shared Channel)

[0100] The PBCH is used to transmit the Master Information Block (MIB, BCH, Broadcast Channel). The PBCH can be transmitted based on a specified transmission interval. For example, the PBCH can be transmitted at 80ms intervals. The content of the information included in the PBCH can also be updated every 80ms. The PBCH can consist of 288 subcarriers. The PBCH can also consist of 2, 3, or 4 OFDM symbols. The MIB can include information associated with an identifier (index) of the synchronization signal. The MIB can also include information indicating at least a portion of the time slot number, subframe number, and radio frame number from which the PBCH is transmitted.

[0101] The PDCCH is used to transmit downlink control information (DCI). Downlink control information is also known as DCI format. Downlink control information may include at least one of downlink grant or uplink grant. Downlink grant is also known as downlink assignment or downlink allocation.

[0102] A downlink grant is used for scheduling at least one PDSCH within a serving cell. The downlink grant is also used for scheduling PDSCHs within the same time slot as the time slot in which the downlink grant was sent.

[0103] An uplink grant is used for scheduling at least one PUSCH within a serving cell.

[0104] A physical channel can be mapped to one serving cell. A physical channel may not be mapped to multiple serving cells.

[0105] One or more PUCCH groups can also be configured for terminal device 1. One or more PUCCH resource sets can also be configured for PUCCH groups that include one or more serving cells. A PUCCH group includes at least one or more PUCCH resources. The PUCCH resources and / or PUCCH resource sets configured for a PUCCH group can also be associated with a serving cell included in that PUCCH group.

[0106] Figure 4 This diagram illustrates an example of the PUCCH resource set configuration in a serving cell according to one embodiment of this invention. Figure 4In one example, the serving cell has two PUCCH resource sets, each associated with one or more parameters. Parameter #1 is associated with PUCCH resource set #1, and parameters #2 and #3 are associated with PUCCH resource set #2. That is, if the parameter used for PDSCH is at least parameter #1, the PUCCH resources used for HARQ-ACK of that PDSCH can be provided by PUCCH resource set #1. Furthermore, if the parameter used for PDCCH scheduling that PDSCH is at least parameter #1, the PUCCH resources used for HARQ-ACK of that PDSCH can also be provided by PUCCH resource set #1. Moreover, if the parameter used for PDSCH is at least parameter #2 or parameter #3, the PUCCH resources used for HARQ-ACK of that PDSCH can be provided by PUCCH resource set #2. Furthermore, if the parameters of the PDCCH used to schedule the PDSCH are at least parameter #2 or parameter #3, the PUCCH resources used for the HARQ-ACK of the PDSCH can also be provided by the PUCCH resource set #2. That is, the association of the specified index parameters with the PUCCH resource set can also mean that the PUCCH resources used for sending the HARQ-ACK of the PDSCH identified by the specified index parameters are provided by that PUCCH resource set.

[0107] Here, the parameter includes at least some or all of the following: 1) a parameter for identifying the control resource set of the PDCCH used for PDSCH scheduling; 2) a parameter for identifying the search space of the PDCCH used for PDSCH scheduling; 3) an index for identifying the first beam parameter used for PDSCH; 4) an index for identifying the second beam parameter used for PDCCH scheduling; 5) the HARQ process ID associated with the PDSCH; and 6) an index for identifying the third beam parameter used for PUCCH. The association between the PUCCH resource set and this parameter may also be given at least based on parameters from higher layers.

[0108] Figure 5 This diagram illustrates an example of the PUCCH resource set configuration in carrier aggregation of one embodiment of this invention. Figure 5 In this context, PCell (Primary cell) and SCell (Secondary cell) are each serving cells, and PCell and SCell constitute a PUCCH group. A PUCCH group has three PUCCH resource sets, and each PUCCH resource set is associated with one or more parameters. For example... Figure 5As shown, at least a portion of the PUCCH resource set can also be associated with parameters for PCell and parameters for SCell. At least a portion of the PUCCH resource set can also be associated with parameters for multiple serving cells.

[0109] Figure 6 This diagram illustrates an example of the PUCCH resource set configuration in a scenario where there are two PUCCH groups, as described in this embodiment. Figure 6 In this example, two PUCCH resource sets are configured for the first PUCCH group, and one PUCCH resource set is configured for the second PUCCH group. In the first PUCCH group, PUCCH resource set #1 is associated with parameters #1 and #2, and PUCCH resource set #2 is associated with parameters #3 and #4. Furthermore, in the second PUCCH group, PUCCH resource set #3 is associated with parameters #5, #6, and #7. For example... Figure 6 As shown, the PUCCH resource set can also be given separately for each PUCCH group. Furthermore, the association between the PUCCH resource set of each PUCCH group and this parameter can also be given at least based on the parameters of the higher layer.

[0110] In dual connectivity, the first PUCCH group can be the PCG (Primary Cell Group), and the second PUCCH group can be the SCG (Secondary Cell Group).

[0111] Terminal device 1 is configured with one or more control resource sets to search for PDCCH. Terminal device 1 attempts to receive PDCCH within the configured control resource set.

[0112] A control resource set can represent a time / frequency domain that can map one or more PDCCHs. A control resource set can also be the area where terminal device 1 attempts to receive PDCCHs. A control resource set can consist of contiguous resources (localized resources) or distributive resources.

[0113] In the frequency domain, the mapping unit of the control resource set can be a resource block. In the time domain, the mapping unit of the control resource set can be an OFDM symbol.

[0114] The frequency domain of the control resource set can be the same as the system bandwidth of the serving cell. Alternatively, the frequency domain of the control resource set can be given at least based on the system bandwidth of the serving cell. The frequency domain of the control resource set can also be given at least based on upper-layer signaling and / or downlink control information.

[0115] The time domain of the control resource set can be given at least based on upper-layer signaling and / or downlink control information.

[0116] The control resource set may include at least one or both of a common control resource set and a dedicated control resource set. The common control resource set may be a control resource set jointly configured for multiple terminal devices 1. The common control resource set may also be given based at least on a portion or all of the MIB, first system information, second system information, common RRC signaling, and cell ID. The dedicated control resource set may be a control resource set configured specifically for terminal device 1. The dedicated control resource set may also be given based at least on a portion or all of the dedicated RRC signaling and C-RNTI values.

[0117] The control resource set can also be a collection of PDCCHs (or PDCCH candidates) monitored by terminal device 1. The control resource set may include a collection of PDCCHs (or PDCCH candidates) monitored by terminal device 1. The control resource set may also consist of one or more search areas (search spaces, SS). The control resource set can also be a search area.

[0118] The search area may consist of one or more PDCCH candidates. Terminal device 1 receives the PDCCH candidates included in the search area and attempts to receive the PDCCH. Here, the PDCCH candidates are also referred to as blind detection candidates.

[0119] The search area may include at least one or both of the CSS (Common Search Space) and USS (UE-specific Search Space). The CSS may be a search area commonly set for multiple terminal devices 1. The USS may be a search area including settings specific to terminal device 1. The CSS may be given based at least on a portion or all of the MIB, first system information, second system information, common RRC signaling, and cell ID. The USS may be given based at least on a portion or all of the dedicated RRC signaling and C-RNTI values.

[0120] A public control resource set may include at least one or both of CSS and USS. A private control resource set may also include at least one or both of CSS and USS. A private control resource set may also not include CSS.

[0121] The physical resources of the search area are composed of control channel elements (CCEs). A CCE consists of a specified number of resource element groups (REGs). For example, a CCE can consist of 6 REGs. A REG can also consist of a single OFDM symbol of a physical resource block (PRB). That is, a REG can also consist of 12 resource elements (REs). A PRB is also simply referred to as a resource block (RB).

[0122] PDSCH is used to send downlink data (DL-SCH, PDSCH). PDSCH is used at least to send Random Access Message 2 (Random Access Response). PDSCH is used at least to send system information including parameters used for initial access.

[0123] The PDSCH is given at least based on some or all of scrambling, modulation, layer mapping, precoding, and mapping to physical resources. Terminal device 1 may also assume that the PDSCH is given at least based on some or all of scrambling, modulation, layer mapping, precoding, and mapping to physical resources.

[0124] During scrambling, for codeword q, bit block b (q) (i) can be based at least on the scrambling sequence c (q) (i) Scrambling is applied to generate b (q) sc (i). In bit block b (q) In (i), i represents 0 to M. (q) bit The range of -1. M (q) bit This can be the number of bits in the codeword q transmitted via PDSCH. The scrambling sequence c. (q) (i) can be a sequence given at least based on a pseudo-random function (e.g., an M-sequence or a Gold sequence). In scrambling, for codeword q, bit block b (q) (i) can be based on the scrambling sequence c(q) (i) and the following formula (3) are used to scramble the bit to generate a scrambled bit block b. (q) sc (i).

[0125]

[0126] mod(A, B) can be a function that outputs the remainder when A is divided by B. Alternatively, mod(A, B) can be a function that outputs the value corresponding to the remainder when A is divided by B.

[0127] In modulation, for codeword q, the scrambling bit block b can also be modulated based on a specified modulation scheme. (q) sc (i) Perform modulation to generate block d of complex-valued modulation symbols. (q) (i) The specified modulation scheme may also include at least some or all of QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, and 256QAM. It should be noted that the specified modulation scheme may also be given at least based on the DCI of the PDSCH scheduling.

[0128] In layer mapping, blocks d of complex-valued modulation symbols used for each codeword can be mapped. (q) (i) Based on the prescribed mapping process, map to one or more layers to generate a block x(i) of complex-valued modulation symbols. The block x(i) of complex-valued modulation symbols can also be x(i) = [x...] (0) (i)......x (v-1) (i)]. Here, v is the number of layers used for PDSCH.

[0129] In precoding, a predefined precoding can be applied to a block x(i) of complex-valued modulation symbols. Alternatively, in precoding, a block x(i) of complex-valued modulation symbols can be converted into a block x(i) of complex-valued modulation symbols for v antenna ports. The number of antenna ports used for PDSCH can also be the same as the number of layers used for PDSCH.

[0130] In the mapping to physical resources (physical resource mapping), the block x of complex-valued modulation symbols used for antenna port p can be mapped. (p)(i) Except for resource elements that satisfy at least some or all of elements A to E as described below, mapping is performed from resource element (k, 1) in frequency priority. Here, frequency priority mapping can also be performed in the manner of mapping symbol 1 from k to k+M (M is a specified value), symbol 1+1 from k to k+M, ..., symbol I+N (N is a specified value) from k to k+M. In physical resource mapping, the block x of complex-valued modulation symbols used for antenna port p can also be mapped. (p) (i) Except for resource elements that satisfy at least some or all of elements A to E below, map from resource element (k, 1) in a time-priority manner. Here, time-priority mapping can also be performed in the manner of mapping the symbols 1 to I+N (N is a specified value) of the subcarrier index (resource element index) k of resource element (k, 1), the symbols 1 to 1+N of the subcarrier index k+1, ..., the symbols 1 to 1+N of the subcarrier index k+M (M is a specified value).

[0131] Element A) Maps the resource elements of DL DMRS associated with PDSCH.

[0132] Element B) maps to the resource elements of the DL PTRS associated with this DL DMRS.

[0133] Element C) Resource elements for setting CSI-RS and / or sending CSI-RS

[0134] Element D) Resource elements for setting up and / or sending SS blocks.

[0135] Element E) Reserved Resources

[0136] exist Figure 1 In downlink wireless communication, the following downlink physical signals are used. These downlink physical signals may not be used to transmit information output from the upper layer, but are instead used by the physical layer.

[0137] • Synchronization signal (SS)

[0138] • DL DMRS (Downlink Demodulation Reference Signal)

[0139] • Shared RS (Shared Reference Signal)

[0140] • CSI-RS (Channel State Information-Reference Signal)

[0141] • DL PTRS (Downlink Phase Tracking Reference Signal)

[0142] • TRS (Tracking Reference Signal)

[0143] Synchronization signals are used by terminal device 1 to obtain downlink frequency and / or time domain synchronization. Synchronization signals include PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal).

[0144] An SS block consists of at least some or all of the PSS, SSS, and PBCH. The antenna ports of some or all of the PSS, SSS, and PBCH included in the SS block can also be identical. Some or all of the PSS, SSS, and PBCH included in the SS block can also be mapped to consecutive OFDM symbols. The CP settings of some or all of the PSS, SSS, and PBCH included in the SS block can also be identical. The subcarrier spacing μ settings of some or all of the PSS, SSS, and PBCH included in the SS block can also be identical.

[0145] The DL DMRS is associated with the transmission of PBCH, PDCCH, and / or PDSCH. The DL DMRS is multiplexed with PBCH, PDCCH, or PDSCH. Terminal device 1 can use the DL DMRS corresponding to the PBCH, PDCCH, or PDSCH for transmission path correction of the PBCH, PDCCH, or PDSCH. Hereinafter, the DL DMRS associated with and transmitted along with the PBCH will be referred to simply as "transmitting PBCH." Hereinafter, the DL DMRS associated with and transmitted along with the PDCCH will be referred to simply as "transmitting PDCCH." Hereinafter, the DL DMRS associated with and transmitted along with the PDSCH will be referred to simply as "transmitting PDSCH." The DL DMRS associated with the PBCH is also called the DL DMRS for PBCH. The DL DMRS associated with the PDSCH is also called the DL DMRS for PDSCH. The DL DMRS associated with the PDCCH is also called the DL DMRS associated with the PDCCH.

[0146] A shared RS can be associated with at least the transmission of a PDCCH. A shared RS can be multiplexed with a PDCCH. Terminal device 1 can use a shared RS to perform PDCCH transmission path correction. Hereinafter, the PDCCH transmitted together and the shared RS associated with the PDCCH will be referred to simply as the transmitting PDCCH.

[0147] DL DMRS can be a reference signal individually set for terminal device 1. The sequence of DL DMRS can be given at least based on parameters individually set for terminal device 1. The sequence of DL DMRS can be given at least based on UE-specific values ​​(e.g., C-RNTI). DL DMRS can also be transmitted individually for PDCCH and / or PDSCH. On the other hand, shared RS can be a reference signal commonly set for multiple terminal devices 1. The sequence of shared RS can also be given independently of parameters individually set for terminal device 1. For example, the sequence of shared RS can also be given based on at least a portion of the slot number, mini-slot number, and cell ID (identity). Shared RS can also be a reference signal transmitted regardless of whether PDCCH and / or PDSCH are transmitted.

[0148] CSI-RS can be a signal used at least for calculating channel state information. The CSI-RS mode assumed by the terminal device can be given at least by parameters from the upper layer.

[0149] PTRS can be a signal used at least for phase noise compensation. The mode of PTRS assumed by the terminal device can be given at least based on the parameters of the upper layer and / or DCI.

[0150] A DL PTRS can be associated with a DL DMRS group that includes at least one antenna port for one or more DL DMRSs. The association of a DL PTRS with a DL DMRS group can also be that the antenna port of the DL PTRS is at least a QCL (Quality Classless) antenna port of some or all of the antenna ports included in the DL DMRS group. A DL DMRS group can also be identified at least based on the antenna port with the smallest index among the DL DMRSs included in the DL DMRS group.

[0151] TRS can be a signal used for synchronization at least in time and / or frequency. The mode of TRS assumed by the terminal device can be given at least based on the parameters and / or DCI of the upper layer.

[0152] Downlink physical channels and downlink physical signals are also called downlink signals. Uplink physical channels and uplink physical signals are also called uplink signals. Downlink signals and uplink signals are also collectively referred to as signals. Downlink physical channels and uplink physical channels are collectively referred to as physical channels. Downlink physical signals and uplink physical signals are collectively referred to as physical signals.

[0153] BCH, UL-SCH, and DL-SCH are transport channels. Channels used in the Medium Access Control (MAC) layer are called transport channels. The unit of the transport channel used in the MAC layer is also called a transport block (TB) or MACPDU. HARQ (Hybrid Automatic Repeat reQuest) control is performed on each transport block in the MAC layer. A transport block is the unit of data forwarded (delivered) from the MAC layer to the physical layer. In the physical layer, transport blocks are mapped to codewords, and modulation processing is performed on each codeword.

[0154] Base station device 3 and terminal device 1 exchange signals at a higher layer. For example, base station device 3 and terminal device 1 can send and receive RRC signaling (also known as RRC message or RRC information) at the Radio Resource Control (RRC) layer. Furthermore, base station device 3 and terminal device 1 can also send and receive MAC CE (Control Element) at the MAC layer. Here, RRC signaling and / or MAC CE are also referred to as higher layer signaling.

[0155] PUSCH and PDSCH can be used to transmit at least RRC signaling and / or MAC CE. Here, the RRC signaling transmitted by base station device 3 via PDSCH can also be signaling shared by multiple terminal devices 1 within the serving cell. Signaling shared by multiple terminal devices 1 within the serving cell is also called common RRC signaling. RRC signaling transmitted from base station device 3 via PDSCH can also be signaling dedicated to a specific terminal device 1 (also called dedicated signaling or UE-specific signaling). Signaling dedicated to terminal device 1 is also called dedicated RRC signaling. Upper-layer parameters specific to the serving cell can also be transmitted using signaling shared by multiple terminal devices 1 within the serving cell or signaling dedicated to a specific terminal device 1. UE-specific upper-layer parameters can also be transmitted using signaling dedicated to a specific terminal device 1. PDSCH including dedicated RRC signaling can also be scheduled via PDSCH within the first control resource set.

[0156] BCCH (Broadcast Control Channel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is an upper-layer channel used to transmit MIBs. Furthermore, CCCH (Common Control Channel) is an upper-layer channel used to transmit common information among multiple terminal devices 1. Here, CCCH is used, for example, for a terminal device 1 not connected to RRC. Furthermore, DCCH (Dedicated Control Channel) is an upper-layer channel used to transmit individual control information (dedicated control information) to terminal device 1. Here, DCCH is used, for example, for a terminal device 1 connected to RRC.

[0157] The BCCH in the logical channel can also be mapped to BCH, DL-SCH, or UL-SCH in the transport channel. Similarly, the CCCH in the logical channel can be mapped to DL-SCH or UL-SCH in the transport channel. Likewise, the DCCH in the logical channel can be mapped to DL-SCH or UL-SCH in the transport channel.

[0158] The UL-SCH in the transport channel can also be mapped to the PUSCH in the physical channel. The DL-SCH in the transport channel is mapped to the PDSCH in the physical channel. The BCH in the transport channel is mapped to the PBCH in the physical channel.

[0159] The following describes an example of a communication method between terminal device 1 and base station device 3. Hereinafter, terminal device 1 is also referred to as UE (User Equipment) #1. Base station device 3 may also be configured to include at least TRP (Transmission and Reception Point) #1 and / or TRP #2. TRP #1 and TRP #2 may also be different base station devices 3. Terminal device 1 and / or base station device 3 may use a transmit beam (Tx beam) to transmit physical channels and / or physical signals. Terminal device 1 and / or base station device 3 may use a receive beam (Rx beam) to receive physical channels and / or physical signals.

[0160] Figure 7 This diagram illustrates an example of a communication method between TRP#1 and UE#1 in one embodiment of this work. Figure 7 In this context, TRP#1 uses transmit beam (Txbeam)#1 to transmit at least a portion or all of CSI-RS#1, SS block#1, PDCCH#1, PDSCH#1, DLDMRS#1, and DL PTRS#1. Transmitting one or more downlink signals using the same transmit beam can also mean that each antenna port of one or more downlink signals has at least a QCL with respect to the beam parameters. UE#1 receives at least a portion or all of CSI-RS#1, SS block#1, PDCCH#1, PDSCH#1, DLDMRS#1, and DL PTRS#1, based at least on the beam parameters used for transmit beam#1. On the other hand, in... Figure 7 In this process, TRP#1 uses transmit beam #2 to transmit at least some or all of CSI-RS#2, SS block #2, PDCCH#2, PDSCH#2, DL DMRS#2, and DL PTRS#2. UE#1 receives at least some or all of CSI-RS#2, SS block #2, PDCCH#2, PDSCH#2, DL DMRS#2, and DL PTRS#2, based at least on the beam parameters used for transmit beam #2.

[0161] Figure 8 This is a diagram illustrating an example of the relationship between downlink signals and their identifiers in one embodiment of this invention. For example... Figure 8As shown, CSI-RS can be identified at least based on the CSI-RS port index. Furthermore, SS blocks can also be identified at least based on the SS block time index. PDCCH can also be identified at least based on the control resource set used to detect the PDCCH and / or the search space from which the PDCCH is detected. PDSCH can also be identified at least based on the PDSCH port index. DL DMRS can also be identified at least based on the DL DMRS port index. DL PTRS can also be identified at least based on the DL PTRS port index.

[0162] UE#1 can receive downlink signals using an appropriate beam by associating the identifiers given for each downlink signal with beam parameters.

[0163] Figure 9 This diagram illustrates an example of a communication method between TRP#1 and UE#1 in one embodiment of this work. Figure 9 In this process, TRP#1 transmits PDSCH#1 using transmit beam #1, and UE#1 receives PDSCH#1 based on the beam parameters of transmit beam #1. Furthermore, TRP#1 transmits PDSCH#2 using transmit beam #2, and UE#1 receives PDSCH#2 based on the beam parameters of transmit beam #2. Additionally, transmit beam #3 is used to transmit PUCCH#1, which includes HARQ-ACK#1 for PDSCH#1 and HARQ-ACK#2 for PDSCH#2, and TRP#1 receives PUCCH#1. Multiple PDSCHs transmitted based on different beam parameters can also be transmitted via PUCCH using the same transmit beam.

[0164] Figure 10 This diagram illustrates an example of the communication method between TRP#1, TRP#2, and UE#1 in one embodiment of this work. Figure 10 In this configuration, TRP#1 and TRP#2 are connected via Ideal backhaul. Figure 10In this process, TRP#1 transmits PDSCH#1 using transmit beam #1, and UE#1 receives PDSCH#1 based on the beam parameters of transmit beam #1. Furthermore, TRP#2 transmits PDSCH#2 using transmit beam #2, and UE#1 receives PDSCH#2 based on the beam parameters of transmit beam #2. Additionally, transmit beam #3 is used to transmit PUCCH#1, which includes HARQ-ACK#1 for PDSCH#1 and HARQ-ACK#2 for PDSCH#2, and TRP#1 receives PUCCH#1. TRP#2 can perform optimized scheduling based on the HARQ-ACK#2 received by TRP#1 via ideal backhaul. Here, ideal backhaul can refer to TRP#1 and TRP#2 sharing upper-layer parameter settings, uplink / downlink transmission timing, and the content of HARQ-ACK from the UE. In other words, TRP#1 and TRP#2, through ideal backhaul, can also cooperate to schedule uplink / downlink transmission for a UE.

[0165] Figure 11 This diagram illustrates an example of the communication method between TRP#1, TRP#2, and UE#1 in one embodiment of this work. Figure 11 In this configuration, TRP#1 and TRP#2 are connected via a non-ideal backhaul. A non-ideal backhaul assumes that a complete backhaul link may not be provided. For example, it is assumed that a high-speed exchange of PDSCH scheduling information, HARQ-ACK, etc., is not guaranteed in a non-ideal backhaul. That is, it is preferable that TRP#1 and TRP#2, connected via a non-ideal backhaul, independently schedule at least a portion of the PDSCH, and preferably receive HARQ-ACKs for each PDSCH separately.

[0166] exist Figure 11 In this process, TRP#1 transmits PDSCH#1 using transmit beam #1, and UE#1 receives PDSCH#1 based on the beam parameters of transmit beam #1. Furthermore, TRP#2 transmits PDSCH#2 using transmit beam #2, and UE#1 receives PDSCH#2 based on the beam parameters of transmit beam #2. Additionally, transmit beam #3 is used to transmit PUCCH#1, which includes HARQ-ACK#1 for PDSCH#1, and TRP#1 receives PUCCH#1. Finally, transmit beam #4 is used to transmit PUCCH#2, which includes HARQ-ACK#2 for PDSCH#2, and TRP#2 receives PUCCH#2.

[0167] like Figure 11As shown, in a non-ideal backhaul environment, it is preferable to generate a physical channel that includes at least HARQ-ACK for each TRP for transmission. Alternatively, in a non-ideal backhaul environment, a HARQ process can be set up for each TRP, and the UE can be scheduled individually for each TRP.

[0168] The following describes an example of the operation of terminal device 1.

[0169] Terminal device 1 can use a PUCCH resource provided by a PUCCH resource set to send a PUCCH that includes at least a HARQ-ACK of PDSCH. Here, the PUCCH resource set can also be provided from multiple PUCCH resource sets, based at least on some or all of the conditions 1 to 6 below.

[0170] Condition 1) Detect the control resource set of the PDCCH used for scheduling this PDSCH.

[0171] Condition 2) Detect the search space of the PDCCH used for scheduling this PDSCH.

[0172] Condition 3) The first beam parameter used for this PDSCH

[0173] Condition 4) Second beam parameters used for this PDCCH

[0174] Condition 5) The HARQ process ID associated with this PDSCH

[0175] Condition 6) Third beam parameters for this PUCCH

[0176] Here, each of the one or more PUCCH resource sets is given at least based on the parameters of the upper layer. Furthermore, the first beam parameters for the PDSCH can also be given at least based on the parameters of the upper layer. Furthermore, the second beam parameters for the PDCCH can also be given at least based on the parameters of the upper layer. Furthermore, the third beam parameters for the PUCCH can also be given at least based on the parameters of the upper layer.

[0177] Alternatively, within a PUCCH group, a single PUCCH resource set can be derived from multiple PUCCH resource sets, based at least on some or all of conditions 1 to 6. That is, for each PUCCH group, a single PUCCH resource set can also be derived from multiple PUCCH resource sets, based at least on some or all of conditions 1 to 6.

[0178] Here, each of the plurality of PUCCH resource sets may be a set comprising at least one or more PUCCH resources. The one or more PUCCH resources may also represent resource blocks and / or resource elements for transmitting the one or more PUCCHs. The one or more PUCCH resources may also represent at least resource elements (k, l) for the one or more PUCCH formats 0. The one or more PUCCH resources may also represent at least resource elements (k, l) for the one or more PUCCH formats 1. The one or more PUCCH resources may also represent at least resource elements (k, l) for the one or more PUCCH formats 2. The one or more PUCCH resources may also represent at least resource elements (k, l) for the one or more PUCCH formats 3.

[0179] The PUCCH resource may also at least represent the start OFDM symbol of the PUCCH within the time slot. The PUCCH resource may also at least represent the index of the time slot. The PUCCH resource may also at least represent the number of time slots mapping the PUCCH. The PUCCH resource may also at least represent the number of OFDM symbols mapping the PUCCH. The PUCCH resource may also at least represent the index (set) of the PRBs transmitting the PUCCH. The PUCCH resource may also at least represent the frequency hopping mode. The frequency hopping mode may also include a setting where frequency hopping is not applied. The PUCCH resource may also at least represent the orthogonal sequence mode. The PUCCH resource may also at least represent the cyclic shift applied to the UCIs included in the PUCCH. The PUCCH resource may also at least represent the cyclic shift applied to the uplink reference signal associated with the PUCCH. The PUCCH resource may also at least represent the mapping mode of the uplink reference signal associated with the PUCCH (e.g., comb-shaped mapping).

[0180] Alternatively, a PUCCH resource can be derived from a PUCCH resource set based at least on the specified fields of the DCI included in the PDCCH that schedules the PDSCH. For example, if a PUCCH resource set includes four PUCCH resources and the specified field is 2 bits, each code point of the specified field can be assigned to one of the four PUCCH resources.

[0181] In condition 1, the control resource set can be identified at least based on its index. For example, if the identifier of the control resource set is #0 or #1, a first PUCCH resource set can be derived from the plurality of PUCCH resource sets, and if the identifier of the control resource set is #2, a second PUCCH resource set can be derived from the plurality of PUCCH resource sets.

[0182] In condition 1, the control resource set can also be identified by its monitoring period. For example, if the monitoring period of the control resource set is the first period, a first PUCCH resource set can be derived from the multiple PUCCH resource sets; if the monitoring period of the control resource set is the second period, a second PUCCH resource set can be derived from the multiple PUCCH resource sets.

[0183] In condition 1, the control resource set can also be identified at least based on its type. The type of the control resource set can include at least public control resource sets and private control resource sets. For example, if the type of the control resource set is a public control resource set, a first PUCCH resource set can be derived from the plurality of PUCCH resource sets; if the type of the control resource set is a private control resource set, a second PUCCH resource set can be derived from the plurality of PUCCH resource sets.

[0184] In condition 1, the control resource set may also be identified based on at least some or all of the following: the identifier of the control resource set, the monitoring period of the control resource set, and the type of the control resource set.

[0185] In condition 2, the search space can be identified at least based on its index. For example, if the identifier of the search space is #0 or #1, a first PUCCH resource set can be derived from the plurality of PUCCH resource sets; if the identifier of the search space is #2, a second PUCCH resource set can be derived from the plurality of PUCCH resource sets.

[0186] In condition 2, the search space can also be identified by its monitoring period. For example, if the monitoring period of the search space is the first period, a first PUCCH resource set can be derived from the multiple PUCCH resource sets; if the monitoring period of the search space is the second period, a second PUCCH resource set can be derived from the multiple PUCCH resource sets.

[0187] In condition 2, the search space can also be identified at least based on its type. The type of the search space can include at least a public search space and a specific search space. For example, if the search space is of type public, a first PUCCH resource set can be derived from the plurality of PUCCH resource sets; if the search space is of type specific, a second PUCCH resource set can be derived from the plurality of PUCCH resource sets.

[0188] In condition 2, the search space may also be identified based on at least some or all of the following: the identifier of the search space, the monitoring period of the search space, and the type of the search space.

[0189] In condition 3, the first beam parameter used for the PDSCH can be identified by the index of the antenna port of the downlink physical signal whose antenna port is QCL. For example, if the antenna port of the PDSCH is QCL with the antenna port of the first downlink physical signal, the first PUCCH resource set can be given from the plurality of PUCCH resource sets; if the antenna port of the PDSCH is QCL with the antenna port of the second downlink physical signal, the second PUCCH resource set can be given from the plurality of PUCCH resource sets. The first beam parameter used for the PDSCH can also be given at least based on parameters of the upper layer. The first beam parameter used for the PDSCH can also be given at least based on the specified fields of the DCI included in the PDCCH that schedules the PDSCH.

[0190] The first beam parameters used for PDSCH may include at least some or all of elements 1 to 7 below. The first beam parameters used for PDSCH may also be associated with at least some or all of elements 1 to 7 below.

[0191] Element 1) The index of the antenna port of the SS block of QCL with the antenna port of PDSCH.

[0192] Element 2) The index of the antenna port of the CSI-RS with the antenna port of the PDSCH being QCL.

[0193] Element 3) The index of the antenna port of the DLPTRS of QCL with the antenna port of PDSCH.

[0194] Element 4) includes at least an index to the DL DMRS group associated with PDSCH.

[0195] Element 5) Setting the physical resource mapping of PDSCH

[0196] Element 6) and the antenna port index of the TRS of QCL with the antenna port of PDSCH.

[0197] Element 7) is used to set the subcarrier spacing μ of the PDSCH.

[0198] In element 5, the physical resource mapping settings for the PDSCH can be parameters for rate matching of the PDSCH at least. Parameters for rate matching of the PDSCH can represent resource elements of the unmapped PDSCH. The physical resource mapping settings for the PDSCH can also include at least some or all of the following: SS block mapping settings, CSI-RS mapping settings, PDSCH physical resource mapping settings, and reserved resource settings. The physical resource mapping settings for the PDSCH can also include settings indicating at least which CORESET is used for the PDSCH and / or which CORESET is not used for the PDSCH.

[0199] The mapping settings for SS blocks can represent the actual transmitted SS blocks. Alternatively, a bitmap provided as a group of one or more SS blocks can be used to represent the actual transmitted SS blocks. The mapping settings for SS blocks can include the setting of the transmission period of the SS blocks. The mapping settings for SS blocks can also include the setting of the subcarrier spacing μ of the SS blocks.

[0200] The CSI-RS mapping settings may include setting the number of antenna ports for transmitting CSI-RS. The CSI-RS mapping settings may also include settings indicating the transmission of CSI-RS. The CSI-RS mapping settings may also include settings indicating the transmission of zero-power CSI-RS. Zero-power CSI-RS may be a CSI-RS assumed to be zero-power by terminal device 1. The CSI-RS mapping settings may also be settings indicating the transmission of CSI-IM (CSI-Interference Measurement).

[0201] The physical resource mapping settings for a PDSCH can include setting the start position of the OFDM symbol for that PDSCH. The physical resource mapping settings for a PDSCH can also include setting which resource elements of that PDSCH are not mapped. The physical resource mapping settings for a PDSCH can also include setting the end position of the OFDM symbol for that PDSCH. The physical resource mapping settings for a PDSCH can also include setting the duration of that PDSCH.

[0202] The setting of reserved resources can be the setting of resource elements that are not assumed by terminal device 1 to send or not send certain signals.

[0203] The first beam parameters can be given from a set of one or more first beam parameters. The first beam parameters used for the PDSCH can be given from the set of one or more first beam parameters, based at least on the specified fields included in the DCI that schedules the PDSCH. The set of one or more first beam parameters can be given separately from the parameters of the upper layer.

[0204] In condition 4, the second beam parameters used for the PDCCH can be identified by the index of the antenna port of the downlink physical signal whose antenna port is QCL. For example, if the antenna port of the PDCCH is QCL with the antenna port of the first downlink physical signal, the first PUCCH resource set can be given from the plurality of PUCCH resource sets; if the antenna port of the PDCCH is QCL with the antenna port of the second downlink physical signal, the second PUCCH resource set can be given from the plurality of PUCCH resource sets. The second beam parameters used for the PDCCH can be given at least based on the parameters of the upper layer. The second beam parameters can include at least some or all of elements 1 to 7.

[0205] The second beam parameters can be given from a set of one or more second beam parameters. The second beam parameters used for the PDCCH can be given from the set of one or more second beam parameters, based at least on the defined fields included in the DCI. The set of one or more second beam parameters can be given separately from the parameters of the upper layer.

[0206] In condition 5, if the HARQ process IDs used for the PDSCH are included in the set of first HARQ process IDs, a first PUCCH resource set can be given from the plurality of PUCCH resource sets; if the HARQ process IDs used for the PDSCH are included in the set of second HARQ process IDs, a second PUCCH resource set can be given from the plurality of PUCCH resource sets. That is, in condition 5, a PUCCH resource set can be given at least based on the set of HARQ process IDs that include the HARQ process IDs used for the PDSCH.

[0207] In condition 6, the third beam parameter for the PUCCH may be given at least based on the first beam parameter and / or the second beam parameter. The third beam parameter may include an index (SRI: SRS Resource Index) for identifying the resources of the SRS.

[0208] If the PDCCH is detected in the common control resource set without regard to some or all of conditions 1 to 6, the PUCCH resource set can be given from a predefined PUCCH resource set. Alternatively, if the PDCCH is detected in the common control resource set without regard to some or all of conditions 1 to 6, the PUCCH resource set can also be given from a PUCCH resource set based on parameters at least mapped to the upper layer of BCCH or CCCH. Furthermore, if the PDCCH is detected in the common control resource set without regard to some or all of conditions 1 to 6, the PUCCH resource can also be given based at least on some or all of the slot number, subframe number, C-RNTI, and the index of the PDCCH that detected the PDCCH.

[0209] If the PDCCH is detected in the common search space without regard to some or all of conditions 1 to 6, the PUCCH resource set can also be given from a predefined PUCCH resource set. If the PDCCH is detected in the common search space without regard to some or all of conditions 1 to 6, the PUCCH resource set can also be given from a PUCCH resource set based on parameters at least mapped to the upper layer of BCCH or CCCH. If the PDCCH is detected in the common search space without regard to some or all of conditions 1 to 6, the PUCCH resource can also be given based at least on some or all of the slot number, subframe number, C-RNTI, and the index of the PDCCH that detected the PDCCH.

[0210] Terminal device 1 can use a PUCCH resource provided from a PUCCH resource set to transmit a PUCCH that includes at least a HARQ-ACK for a PDSCH. The PUCCH resource set can be associated with first beam parameters for the PDSCH. The PUCCH resource set can include the first beam parameters for the PDSCH. The first beam parameters can be given from a set of one or more first beam parameters, based at least on the DCIs included in the PDCCH scheduled for the PDSCH. The first beam parameters can also be given from a set of one or more first beam parameters, based at least on parameters from higher layers. The first parameter can include at least some or all of elements 1 to 7.

[0211] If the PDCCH is detected in the common control resource set without regard to the first beam parameter, the PUCCH resource set can also be given from a predefined PUCCH resource set. If the PDCCH is detected in the common control resource set without regard to the first beam parameter, the PUCCH resource set can also be given from a PUCCH resource set based on parameters at least mapped to the upper layer of BCCH or CCCH. If the PDCCH is detected in the common control resource set without regard to the first beam parameter, the PUCCH resource can also be given based on at least some or all of the slot number, subframe number, C-RNTI, and the index of the PDCCH that detected the PDCCH.

[0212] If the PDCCH is detected in the common search space without regard to the first beam parameter, the PUCCH resource set can also be given from a predefined PUCCH resource set. If the PDCCH is detected in the common search space without regard to the first beam parameter, the PUCCH resource set can also be given from a PUCCH resource set based on parameters at least mapped to the upper layer of BCCH or CCCH. If the PDCCH is detected in the common search space without regard to the first beam parameter, the PUCCH resource can also be given based on at least some or all of the slot number, subframe number, C-RNTI, and the index of the PDCCH that detected the PDCCH.

[0213] Terminal device 1 may also use a PUCCH resource provided from a PUCCH resource set to transmit a PUCCH that includes at least a HARQ-ACK for a PDSCH. This PUCCH resource set may be associated with second beam parameters for the PDCCH. The PUCCH resource set may include the second beam parameters for the PDCCH. The second beam parameters may be given from a set of one or more second beam parameters, based at least on the DCIs included in the PDCCH scheduled for the PDSCH. The second beam parameters may also be given from a set of one or more second beam parameters, based at least on parameters from higher layers.

[0214] If the PDCCH is detected in the common control resource set without regard to the second beam parameter, the PUCCH resource set can also be given from a predefined PUCCH resource set. If the PDCCH is detected in the common control resource set without regard to the second beam parameter, the PUCCH resource set can also be given from a PUCCH resource set based on parameters at least mapped to the upper layer of BCCH or CCCH. If the PDCCH is detected in the common control resource set without regard to the second beam parameter, the PUCCH resource can also be given based on at least some or all of the slot number, subframe number, C-RNTI, and the index of the PDCCH that detected the PDCCH.

[0215] If the PDCCH is detected in the common search space without regard to the second beam parameters, a PUCCH resource set can be provided from a predefined PUCCH resource set. If the PDCCH is detected in the common search space without regard to the second beam parameters, a PUCCH resource set can also be provided from a PUCCH resource set based on parameters at least mapped to the upper layer of BCCH or CCCH. If the PDCCH is detected in the common search space without regard to the second beam parameters, the PUCCH resource can also be provided based on at least some or all of the slot number, subframe number, C-RNTI, and the index of the PDCCH that detected the PDCCH.

[0216] Terminal device 1 may also receive PDSCH based at least on the detection of PDCCH. The first beam parameters for the PDSCH may also be given based at least on some or all of conditions 1, 2, 4, 5 and 6.

[0217] If the PDCCH is detected in the common control resource set without regard to some or all of conditions 1, 2, 4, 5, and 6, the first beam parameter for the PDSCH may also be given at least based on the index of the detected SS block. The index of the detected SS block may also include the index of the SS block of the last successfully decoded PBCH.

[0218] If the PDCCH is detected in the common search space without regard to some or all of conditions 1, 2, 4, 5, and 6, the first beam parameter for the PDSCH can also be given at least based on the index of the detected SS block. The index of the detected SS block can also include the index of the SS block of the last successfully decoded PBCH.

[0219] Terminal device 1 may also receive PDSCH based at least on the detection of PDCCH. The first beam parameter for the PDSCH may also be given from a set including one or more first beam parameters, based at least on the parameters of the PDCCH and / or upper layer that schedule the PDSCH. Here, the set including the one or more first beam parameters is also referred to as the first set. The first set may be given from a set including multiple first sets, based at least on some or all of conditions 1, 2, 4, 5, and 6.

[0220] If the PDCCH is detected in the common control resource set without regard to any part or all of condition 1, condition 2, condition 4, condition 5, and condition 6, the set including the first beam parameters may also be a set including predefined first beam parameters. If the PDCCH is detected in the common control resource set without regard to any part or all of condition 1, condition 2, condition 4, condition 5, and condition 6, the set including the first beam parameters may also be given based on parameters at least mapped to the upper layer of BCCH or CCCH.

[0221] If the PDCCH is detected in the common search space without regard to some or all of conditions 1, 2, 4, 5, and 6, the set including the first beam parameters may also be a set including predefined first beam parameters. If the PDCCH is detected in the common search space without regard to some or all of conditions 1, 2, 4, 5, and 6, the set including the first beam parameters may also be given based on parameters at least mapped to the upper layer of BCCH or CCCH.

[0222] Hereinafter, an example of the configuration of a terminal device 1 according to one embodiment will be described.

[0223] Figure 12 This is a schematic block diagram illustrating the configuration of a terminal device 1 according to one embodiment of this invention. As shown, the terminal device 1 includes a wireless transceiver unit 10 and an upper-layer processing unit 14. The wireless transceiver unit 10 includes at least one or all of an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The upper-layer processing unit 14 includes at least one or all of a media access control layer processing unit 15 and a radio resource control layer processing unit 16. The wireless transceiver unit 10 is also referred to as a transmitting unit, a receiving unit, or a physical layer processing unit.

[0224] The upper-layer processing unit 14 outputs uplink data (transmission blocks) generated by user operations to the wireless transceiver unit 10. The upper-layer processing unit 14 performs processing at the MAC layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and RRC layer.

[0225] The upper-layer processing unit 14 has a media access control layer processing unit 15 that performs MAC layer processing.

[0226] The Radio Resource Control (RRC) layer processing unit 16, included in the upper-layer processing unit 14, performs RRC layer processing. The RRC layer processing unit 16 manages various setting information / parameters for the device itself. The RRC layer processing unit 16 sets various setting information / parameters based on signals received from the upper layer from the base station device 3. That is, the RRC layer processing unit 16 sets various setting information / parameters based on information representing various setting information / parameters received from the base station device 3. These parameters can also be upper-layer parameters.

[0227] The wireless transceiver unit 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. The wireless transceiver unit 10 separates, demodulates, and decodes the signals received from the base station device 3, and outputs the decoded information to the upper-layer processing unit 14. The wireless transceiver unit 10 modulates and encodes the data, generates a baseband signal (converting it to a time-continuous signal), thereby generating a transmission signal, which is then transmitted to the base station device 3.

[0228] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal through quadrature demodulation (downconversion), removing redundant frequency components. The RF unit 12 then outputs the processed analog signal to the baseband unit.

[0229] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes the part equivalent to the CP (Cyclic Prefix) from the converted digital signal and performs a Fast Fourier Transform (FFT) on the signal after removing the CP to extract the signal in the frequency domain.

[0230] The baseband unit 13 performs an inverse fast fourier transform (IFFT) on the data to generate OFDM symbols, appends a CP to the generated OFDM symbols to generate a digital baseband signal, and converts the digital baseband signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0231] The RF unit 12 uses a low-pass filter to remove redundant frequency components from the analog signal input to the baseband unit 13, up-converts the analog signal to a carrier frequency, and transmits it via the antenna unit 11. Furthermore, the RF unit 12 amplifies the power. Additionally, the RF unit 12 may also have the function of controlling the transmission power. Therefore, the RF unit 12 is also referred to as the transmission power control unit.

[0232] Hereinafter, an example of the configuration of a base station device 3 according to one embodiment will be described.

[0233] Figure 13 This is a schematic block diagram illustrating the configuration of a base station device 3 according to one embodiment of this invention. As shown, the base station device 3 includes a wireless transceiver unit 30 and an upper-layer processing unit 34. The wireless transceiver unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33. The upper-layer processing unit 34 includes a media access control layer processing unit 35 and a radio resource control layer processing unit 36. The wireless transceiver unit 30 is also referred to as a transmitting unit, a receiving unit, or a physical layer processing unit.

[0234] The upper-layer processing unit 34 performs processing of the MAC layer, PDCP layer, RLC layer, and RRC layer.

[0235] The media access control layer processing unit 35 of the upper layer processing unit 34 performs MAC layer processing.

[0236] The upper-layer processing unit 34 includes a radio resource control (RRC) layer processing unit 36, which performs RRC layer processing. The RRC layer processing unit 36 ​​generates or obtains downlink data (transmission blocks), system information, RRC messages, MAC CE, etc., configured in the PDSCH from the upper-level node, and outputs them to the radio transceiver unit 30. Furthermore, the RRC layer processing unit 36 ​​manages various setting information / parameters for each terminal device 1. The RRC layer processing unit 36 ​​can set various setting information / parameters for each terminal device 1 via upper-layer signals. That is, the RRC layer processing unit 36 ​​transmits / broadcasts information representing various setting information / parameters.

[0237] The function of the wireless transceiver unit 30 is the same as that of the wireless transceiver unit 10, so the description is omitted.

[0238] The components of terminal device 1, which are labeled with reference numerals 10 to 16, can also be configured as circuits. The components of base station device 3, which are labeled with reference numerals 30 to 36, can also be configured as circuits.

[0239] Hereinafter, various apparatus designs for one embodiment will be described.

[0240] (1) To achieve the above objective, the present invention adopts the following solution. That is, the first solution of the present invention is a terminal device comprising: a receiving unit that monitors a PDCCH in one or more CORESETs and receives a PDSCH based on the detection of the PDCCH; and a transmitting unit that selects a PUCCH resource from a PUCCH resource set and transmits a HARQ-ACK for the PDSCH using the one PUCCH resource, wherein the one PUCCH resource set is selected from multiple PUCCH resource sets associated with the PUCCH resource based on at least some or all of conditions 1, 2, 3, 4, and 5, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, condition 3 is a first beam parameter for the PDSCH, condition 4 is a second beam parameter for the PDCCH, and condition 5 is a HARQ process ID associated with the PDSCH, and the multiple PUCCH resource sets each include one or more PUCCH resources.

[0241] (2) Furthermore, in the first aspect of the present invention, the first beam parameter includes at least a portion or all of the setting of resource element mapping for the PDSCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDSCH being QCL.

[0242] (3) Furthermore, in the first aspect of the present invention, the second beam parameter includes at least a portion or all of the setting of resource element mapping for the PDCCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDCCH being QCL.

[0243] (4) Furthermore, a second aspect of the present invention is a terminal device comprising a receiving unit that monitors a PDCCH in one or more CORESETs and receives a PDSCH based on the detection of the PDCCH. A first beam parameter for the PDSCH is given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0244] (5) Furthermore, in the second aspect of the present invention, the first beam parameter includes at least a portion or all of the setting of resource element mapping for the PDSCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDSCH being QCL.

[0245] (6) Furthermore, in the second aspect of the present invention, the second beam parameter includes at least a portion or all of the setting of resource element mapping for the PDCCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDCCH being QCL.

[0246] (7) Furthermore, a third aspect of the present invention is a terminal device comprising a receiving unit that monitors a PDCCH in one or more CORESETs, receives a PDSCH based on the detection of the PDCCH, and selects a first beam parameter for the PDSCH from a beam parameter set, the beam parameter set being given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0247] (8) Furthermore, in the third aspect of the present invention, the first beam parameter includes at least a portion or all of the setting of resource element mapping for the PDSCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDSCH being QCL.

[0248] (9) Furthermore, in the third aspect of the present invention, the second beam parameter includes at least a portion or all of the setting of resource element mapping for the PDCCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDCCH being QCL.

[0249] (10) Furthermore, a fourth aspect of the present invention is a base station apparatus comprising: a transmitting unit that transmits a PDSCH and transmits a PDCCH including scheduling information of the PDSCH in a CORESET; and a receiving unit that receives a PUCCH transmitted using a PUCCH resource selected from a PUCCH resource set and including a HARQ-ACK for the PDSCH, wherein the PUCCH resource set is selected from a plurality of PUCCH resource sets associated with the PUCCH resource based at least some or all of conditions 1, 2, 3, 4 and 5, wherein condition 1 is a CORESET for detecting the PDCCH, condition 2 is a search space for detecting the PDCCH, condition 3 is a first beam parameter for the PDSCH, condition 4 is a second beam parameter for the PDCCH, and condition 5 is a HARQ process ID associated with the PDSCH, and the plurality of PUCCH resource sets each include one or more PUCCH resources.

[0250] (11) Furthermore, in the fourth aspect of the present invention, the first beam parameter includes at least a portion or all of the setting of resource element mapping for the PDSCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDSCH being QCL.

[0251] (12) Furthermore, in the fourth aspect of the present invention, the second beam parameter includes at least a portion or all of the setting of resource element mapping for the PDCCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDCCH being QCL.

[0252] (13) Furthermore, a fifth aspect of the present invention is a base station apparatus comprising a transmitting unit that transmits a PDSCH and transmits a PDCCH including scheduling information of the PDSCH in a CORESET. The first beam parameter for the PDSCH is given based on at least some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is the second beam parameter for the PDCCH.

[0253] (14) Furthermore, in the fifth aspect of the present invention, the first beam parameter includes at least a portion or all of the setting of resource element mapping for the PDSCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDSCH being QCL.

[0254] (15) Furthermore, in the fifth aspect of the present invention, the second beam parameter includes at least a portion or all of the setting of resource element mapping for the PDCCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDCCH being QCL.

[0255] (16) Furthermore, a sixth aspect of the present invention is a base station apparatus comprising a transmitting unit that transmits a PDSCH, transmits a PDCCH including scheduling information of the PDSCH in a CORESET, and selects a first beam parameter for the PDSCH from a beam parameter set, the beam parameter set being given at least based on some or all of conditions 1, 2 and 3, wherein condition 1 is the CORESET for detecting the PDCCH, condition 2 is the search space for detecting the PDCCH, and condition 3 is a second beam parameter for the PDCCH.

[0256] (17) Furthermore, in the sixth aspect of the present invention, the first beam parameter includes at least a portion or all of the setting of resource element mapping for the PDSCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDSCH being QCL.

[0257] (18) Furthermore, in the sixth aspect of the present invention, the second beam parameter includes at least a portion or all of the setting of resource element mapping for the PDCCH and the index of the antenna port of the downlink reference signal with the antenna port of the DL DMRS associated with the PDCCH being QCL.

[0258] The programs operating in the base station device 3 and terminal device 1 of one embodiment of the present invention can also be programs that control the CPU (Central Processing Unit) and the like to implement the functions of the above-described embodiments of the present invention (programs that enable the computer to perform its functions). Furthermore, the information processed by this device is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) or HDDs (Hard Disk Drives), and is read, modified, and written by the CPU as needed.

[0259] It should be noted that a portion of the terminal device 1 and base station device 3 in the above embodiments can also be implemented by a computer. In this case, it can also be implemented by recording the program used to implement the control function on a computer-readable recording medium, and then reading the program recorded on the recording medium into the computer system and executing it.

[0260] It should be noted that the "computer system" mentioned here refers to the computer system built into the terminal device 1 or the base station device 3, which includes hardware such as the operating system and peripheral devices. Furthermore, "computer-readable recording medium" refers to removable media such as floppy disks, magneto-optical disks, ROMs, and CD-ROMs, as well as storage devices such as hard drives built into the computer system.

[0261] Furthermore, "computer-readable recording medium" may also include: a medium that dynamically stores a program for a short period of time, such as a communication line in the case of transmitting a program via a network such as the Internet or a communication line such as a telephone line; and a medium that stores a program for a fixed period of time, such as volatile memory within a computer system that serves as a server or client in such cases. Furthermore, the aforementioned program may be a program used to implement the stated function, or it may be a program that can be combined with a program already recorded in the computer system to implement the stated function.

[0262] Furthermore, the base station device 3 in the above embodiments can also be implemented as an assembly (device group) composed of multiple devices. Each device constituting the device group may possess some or all of the functions or functional blocks of the base station device 3 in the above embodiments. As a device group, it is sufficient to have all the functions or functional blocks of the base station device 3. In addition, the terminal device 1 in the above embodiments can also communicate with the base station device as an assembly.

[0263] Furthermore, the base station device 3 in the above embodiments can be EUTRAN (Evolved Universal Terrestrial Radio Access Network). Additionally, the base station device 3 in the above embodiments may also have some or all of the functions of a host node for the eNodeB.

[0264] Furthermore, some or all of the terminal device 1 and base station device 3 in the above embodiments can typically be implemented as integrated circuit LSIs, or as chipsets. Each functional block of the terminal device 1 and base station device 3 can be individually chip-based, or partially or entirely integrated into a chip. Moreover, the method of integrated circuit implementation is not limited to LSIs; it can also be implemented using dedicated circuits or general-purpose processors. Furthermore, when advancements in semiconductor technology lead to integrated circuit technologies that replace LSIs, integrated circuits utilizing such technologies can also be used.

[0265] Furthermore, while a terminal device is described as an example of a communication device in the described embodiment, the invention of this application is not limited to this and can also be applied to fixed or non-movable electronic devices installed indoors or outdoors, such as AV equipment, kitchen equipment, vacuum / washing equipment, air conditioning equipment, office equipment, vending machines and other living equipment, etc.

[0266] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the specific configuration is not limited to this embodiment, and design changes are also included without departing from the spirit of the present invention. Furthermore, various modifications can be made to one aspect of the present invention within the scope shown in the technical solutions. Embodiments obtained by appropriately combining the technical solutions disclosed in different embodiments are also included within the technical scope of the present invention. In addition, configurations that achieve the same effect by substituting elements in the elements described in the above embodiments are also included.

[0267] Industrial availability

[0268] One aspect of the present invention can be used, for example, in communication systems, communication devices (e.g., mobile phone devices, base station devices, wireless LAN devices, or sensor devices), integrated circuits (e.g., communication chips), or programs.

[0269] Symbol Explanation

[0270] 1 (1A, 1B, 1C) Terminal device

[0271] 3. Base station equipment

[0272] 10, 30 Wireless Transceiver Unit

[0273] Antenna sections 11 and 31

[0274] RF Sections 12 and 32

[0275] 13, 33 Baseband Section

[0276] 14, 34 Upper-level processing unit

[0277] 15, 35 Media Access Control Layer Processing Department

[0278] 16, 36 Wireless Resource Control Layer Processing Unit

Claims

1. A terminal device comprising: The receiving unit monitors the PDCCH of the DCI, including the scheduling of PDSCH, in the first control resource set and the second control resource set, and receives the PDSCH; and The transmitting unit sends a HARQ-ACK via PUCCH. The first control resource set is associated with one of the first beam parameters. One of the first beam parameters of the PDSCH includes the index of the first antenna port of the first CSI-RS of the first QCL of the PDSCH, or the index of the first antenna port of the first SS block of the first QCL of the PDSCH. The second control resource set is associated with another parameter in the first beam parameters. The other of the first beam parameters of the PDSCH includes the index of the second antenna port of the second CSI-RS that is QCL with the second antenna port of the PDSCH, or the index of the second antenna port of the second SS block that is QCL with the second antenna port of the PDSCH. The second beam parameter of the PDCCH is selected from a set of beam parameters including the second beam parameter based on the determination fields included in the DCI, and the set of the second beam parameter is given based on the upper-layer parameters received by the terminal device. The first beam parameter of the PDSCH is selected from a first set of beam parameters based on the PDCCH and / or upper-layer parameters that schedule the PDSCH, and the first set of beam parameters is selected based on the second beam parameter of the selected PDCCH.

2. A base station device, comprising: The transmitting unit transmits a PDCCH including DCI for PDSCH scheduling in the first control resource set and the second control resource set, and also transmits the PDSCH; and The receiving unit receives HARQ-ACK via PUCCH. The first control resource set is associated with one of the first beam parameters. One of the first beam parameters of the PDSCH includes the index of the first antenna port of the first CSI-RS of the first QCL of the PDSCH, or the index of the first antenna port of the first SS block of the first QCL of the PDSCH. The second control resource set is associated with another parameter in the first beam parameters. The other of the first beam parameters of the PDSCH includes the index of the second antenna port of the second CSI-RS that is QCL with the second antenna port of the PDSCH, or the index of the second antenna port of the second SS block that is QCL with the second antenna port of the PDSCH. The second beam parameter of the PDCCH is selected from a set of beam parameters including the second beam parameter based on the determination fields included in the DCI, the set of the second beam parameter being given based on upper-layer parameters received by the terminal device. The first beam parameter of the PDSCH is selected from a first set of beam parameters based on the PDCCH and / or upper-layer parameters that schedule the PDSCH, and the first set of beam parameters is selected based on the second beam parameter of the selected PDCCH.

3. A communication method for a terminal device, comprising the following steps: The system monitors and receives the PDCCH of the DCI, which includes the scheduling of PDSCH, in both the first and second control resource sets; and Send HARQ-ACK via PUCCH The first control resource set is associated with one of the first beam parameters. One of the first beam parameters of the PDSCH includes the index of the first antenna port of the first CSI-RS of the first QCL of the PDSCH, or the index of the first antenna port of the first SS block of the first QCL of the PDSCH. The second control resource set is associated with another parameter in the first beam parameters. The other of the first beam parameters of the PDSCH includes the index of the second antenna port of the second CSI-RS that is QCL with the second antenna port of the PDSCH, or the index of the second antenna port of the second SS block that is QCL with the second antenna port of the PDSCH. The second beam parameter of the PDCCH is selected from a set of beam parameters including the second beam parameter based on the determination fields included in the DCI, and the set of the second beam parameter is given based on the upper-layer parameters received by the terminal device. The first beam parameter of the PDSCH is selected from a first set of beam parameters based on the PDCCH and / or upper-layer parameters that schedule the PDSCH, and the first set of beam parameters is selected based on the second beam parameter of the selected PDCCH.

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