WO2023243529A1 - 端末装置、基地局装置、および、通信方法 - Google Patents
端末装置、基地局装置、および、通信方法 Download PDFInfo
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- WO2023243529A1 WO2023243529A1 PCT/JP2023/021340 JP2023021340W WO2023243529A1 WO 2023243529 A1 WO2023243529 A1 WO 2023243529A1 JP 2023021340 W JP2023021340 W JP 2023021340W WO 2023243529 A1 WO2023243529 A1 WO 2023243529A1
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- dmrs
- upper layer
- antenna port
- dci format
- layer parameter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
Definitions
- the present invention relates to a terminal device, a base station device, and a communication method.
- This application claims priority to Japanese Patent Application No. 2022-97704 filed in Japan on June 17, 2022, and the contents thereof are incorporated herein.
- LTE Long Term Evolution
- EUTRA Evolved Universal Terrestrial Radio Access
- 3GPP Third Generation Partnership Project
- a base station device is also called an eNodeB (evolved NodeB)
- a terminal device is also called a UE (User Equipment).
- LTE is a cellular communication system in which multiple areas covered by base station devices are arranged in the form of cells. A single base station device may manage multiple serving cells.
- NR New Radio
- IMT International Mobile Telecommunication
- ITU International Telecommunication Union
- Non-patent Document 1 NR is required to meet the requirements of three scenarios within the framework of a single technology: eMBB (enhanced Mobile BroadBand), mmTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication). There is.
- Non-Patent Document 2 In 3GPP, consideration is being given to expanding the services supported by NR (Non-Patent Document 2).
- One aspect of the present invention provides a terminal device that communicates efficiently, a communication method used in the terminal device, a base station device that communicates efficiently, and a communication method used in the base station device.
- a first aspect of the present invention is a terminal device that includes a receiving unit that receives a PDCCH to which a DCI format that instructs transmission of the PUSCH is mapped, a transmitting unit that transmits the PUSCH, and a transmitting unit that transmits the PUSCH.
- the first upper layer parameter is related to a maximum number of DMRS ports for the DMRS, If the layer parameter is not set, the first field in the DCI format is configured with a first number of bits, and if the first upper layer parameter is set, the first field in the DCI format is configured with: A PTRS port for the PTRS is determined based on the first field and one or more DMRS ports for the DMRS.
- a second aspect of the present invention is a base station device, which includes a transmitting unit that transmits a PDCCH to which a DCI format that instructs transmission of the PUSCH is mapped, and a receiving unit that receives the PUSCH, DMRS for the PUSCH and PTRS for the PUSCH are generated, the first upper layer parameter is related to the maximum number of DMRS ports for the DMRS, and the first upper layer parameter is related to the maximum number of DMRS ports for the DMRS; If the parameter is not set, the first field in the DCI format consists of a first number of bits, and if the first upper layer parameter is set, the first field in the DCI format consists of a first number of bits.
- a PTRS port for the PTRS is determined based on the first field and one or more DMRS ports for the DMRS.
- a third aspect of the present invention is a communication method used in a terminal device, which includes the steps of receiving a PDCCH to which a DCI format that instructs PUSCH transmission is mapped, and transmitting the PUSCH. and generating a DMRS for the PUSCH and a PTRS for the PUSCH, the first upper layer parameter being related to the maximum number of DMRS ports for the DMRS, and the first upper layer parameter relating to the maximum number of DMRS ports for the DMRS, If one upper layer parameter is not set, the first field in the DCI format is configured with a first number of bits, and if the first upper layer parameter is set, the first field in the DCI format is The field is configured with a second number of bits, and a PTRS port for the PTRS is determined based on the first field and one or more DMRS ports for the DMRS.
- a fourth aspect of the present invention is a communication method used in a base station device, which includes the steps of transmitting a PDCCH to which a DCI format that instructs PUSCH transmission is mapped, and receiving the PUSCH.
- a DMRS for the PUSCH and a PTRS for the PUSCH are generated, a first upper layer parameter relating to a maximum number of DMRS ports for the DMRS; If the upper layer parameter is not set, the first field in the DCI format consists of a first number of bits, and if the first upper layer parameter is set, the first field in the DCI format is comprised of a second number of bits, and a PTRS port for the PTRS is determined based on the first field and one or more DMRS ports for the DMRS.
- the terminal device can communicate efficiently. Furthermore, the base station device can communicate efficiently.
- FIG. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment.
- 3 is an example showing the relationship among the subcarrier interval setting ⁇ , the number of OFDM symbols per slot N slot symb , and the CP (cyclic prefix) setting according to one aspect of the present embodiment.
- FIG. 2 is a diagram illustrating an example of a method for configuring a resource grid according to an aspect of the present embodiment.
- FIG. 3 is a diagram illustrating a configuration example of a resource grid 3001 according to one aspect of the present embodiment.
- 1 is a schematic block diagram showing a configuration example of a base station device 3 according to an aspect of the present embodiment.
- FIG. 1 is a schematic block diagram showing a configuration example of a terminal device 1 according to an aspect of the present embodiment.
- FIG. FIG. 2 is a diagram illustrating a configuration example of an SS/PBCH block according to an aspect of the present embodiment.
- FIG. 7 is a diagram illustrating an example of a monitoring opportunity for a search area set according to an aspect of the present embodiment.
- FIG. 7 is a diagram illustrating an example of mapping DMRS to antenna ports in one aspect of the present embodiment.
- Floor (C) may be a floor function for real number C.
- floor(C) may be a function that outputs the largest integer within a range that does not exceed the real number C.
- ceil(D) may be a ceiling function for the real number D.
- ceil(D) may be a function that outputs the smallest integer not less than the real number D.
- mod (E, F) may be a function that outputs the remainder when E is divided by F.
- mod (E, F) may be a function that outputs a value corresponding to the remainder when E is divided by F.
- exp(G) e ⁇ G.
- e is Napier's number.
- H ⁇ I indicates H to the I power.
- max(J, K) is a function that outputs the maximum value of J and K.
- max(J, K) is a function that outputs J or K when J and K are equal.
- min(L, M) is a function that outputs the maximum value of L and M.
- min(L, M) is a function that outputs L or M when L and M are equal.
- round(N) is a function that outputs the integer value closest to N. “ ⁇ ” indicates multiplication.
- At least OFDM Orthogonal Frequency Division Multiplex
- An OFDM symbol is a time domain unit of OFDM.
- An OFDM symbol includes at least one or more subcarriers. OFDM symbols are converted into time-continuous signals in baseband signal generation.
- CP-OFDM Cyclic Prefix - Orthogonal Frequency Division Multiplex
- DFT-s-OFDM Discrete Fourier Transform - spread - Orthogonal Frequency Division Multiplex
- the OFDM symbol may have a name that includes a CP added to the OFDM symbol. That is, a certain OFDM symbol may be configured to include the certain OFDM symbol and the CP added to the certain OFDM symbol.
- FIG. 1 is a conceptual diagram of a wireless communication system according to one aspect of this embodiment.
- the wireless communication system is configured to include at least terminal devices 1A to 1C and a base station device 3 (BS#3: Base station#3).
- BS#3 Base station#3
- the terminal devices 1A to 1C will also be referred to as terminal device 1 (UE#1: User Equipment#1).
- the base station device 3 may be configured to include one or more transmitting devices (or transmitting points, transmitting/receiving devices, transmitting/receiving points). When the base station device 3 is configured with a plurality of transmitting devices, each of the plurality of transmitting devices may be arranged at a different position.
- the base station device 3 may provide one or more serving cells.
- a serving cell may be defined as a set of resources used for wireless communication. Further, the serving cell is also called a cell.
- a serving cell may be configured to include one or both of one downlink component carrier (downlink carrier) and one uplink component carrier (uplink carrier).
- a serving cell may be configured to include one or both of two or more downlink component carriers and two or more uplink component carriers.
- Downlink component carriers and uplink component carriers are also collectively referred to as component carriers (carriers).
- one resource grid may be provided for each component carrier. Also, one resource grid may be provided for each set of one component carrier and a certain subcarrier spacing configuration ⁇ .
- the subcarrier interval setting ⁇ is also called numerology.
- one resource grid may be provided for a certain antenna port p, a certain subcarrier spacing setting ⁇ , and a certain set of transmission directions x.
- the subcarrier interval (subcarrier interval setting) ⁇ may be 0, 1, 3, or 4 for the synchronization channel.
- Subcarrier interval setting (subcarrier interval setting) ⁇ may be 0, 1, 2, or 3 for the data channel.
- the synchronization channel may be a generic term for PSS, SSS, and PBCH.
- the data channel may be a generic term for at least PDSCH, PUSCH, PDCCH, and PUCCH.
- the resource grid includes N size, ⁇ grid, x N RB sc subcarriers.
- the resource grid starts from a common resource block N start, ⁇ grid, x .
- the common resource block N start, ⁇ grid, x is also called the reference point of the resource grid.
- the resource grid includes N subframes and ⁇ symb OFDM symbols.
- subscript x added to the parameters related to the resource grid indicates the transmission direction.
- subscript x may be used to indicate either a downlink or an uplink.
- N size, ⁇ grid, and x are offset settings indicated by parameters provided by the RRC layer (for example, the parameter CarrierBandwidth).
- N start, ⁇ grid, x are band settings indicated by parameters provided by the RRC layer (for example, parameters, OffsetToCarrier).
- the offset setting and band setting are settings used for configuring an SCS-specific carrier.
- the subcarrier interval setting ⁇ may be 0, 1, 2, 3, or 4.
- FIG. 2 is an example showing the relationship among the subcarrier interval setting ⁇ , the number of OFDM symbols per slot N slot symb , and the CP (cyclic prefix) setting according to one aspect of the present embodiment.
- N slot symb 14
- N frame 20
- ⁇ slot 40
- N slot symb 12
- the time unit (time unit) T c may be used to express the length of the time domain.
- ⁇ f max 480kHz.
- N f 4096.
- ⁇ f ref is 15kHz.
- N f,ref is 2048.
- the transmission of signals on the downlink and/or the transmission of signals on the uplink may be organized into radio frames (system frames, frames) of length T f .
- a radio frame includes 10 subframes.
- An OFDM symbol is a time domain unit of one communication method.
- an OFDM symbol may be a time domain unit of CP-OFDM.
- the OFDM symbol may be a time domain unit of DFT-s-OFDM.
- a slot may be configured to include multiple OFDM symbols.
- one slot may be composed of N slot symb consecutive OFDM symbols.
- the number and index of slots included in the subframe may be given.
- the slot index n ⁇ s may be given in ascending order as an integer value ranging from 0 to N subframe, ⁇ slot ⁇ 1 in the subframe.
- the number and index of slots included in the radio frame may be given.
- the slot index n ⁇ s,f may be given in ascending order as an integer value ranging from 0 to N frame, ⁇ slot ⁇ 1 in the radio frame.
- FIG. 3 is a diagram illustrating an example of a method for configuring a resource grid according to an aspect of the present embodiment.
- the horizontal axis in FIG. 3 indicates the frequency domain.
- FIG. 3 shows a configuration example of a resource grid with a subcarrier spacing ⁇ 1 in a component carrier 300 and a configuration example of a resource grid with a subcarrier spacing ⁇ 2 in a certain component carrier. In this way, one or more subcarrier intervals may be set for a certain component carrier.
- the component carrier 300 is a band with a predetermined width in the frequency domain.
- Point 3000 is an identifier for specifying a certain subcarrier. Point 3000 is also referred to as point A.
- a common resource block (CRB) set 3100 is a set of common resource blocks for the subcarrier interval setting ⁇ 1 .
- the common resource block including the point 3000 (the solid black block in the common resource block set 3100 in FIG. 3) is also called the reference point of the common resource block set 3100.
- the reference point of the common resource block set 3100 may be the common resource block with index 0 in the common resource block set 3100.
- Offset 3011 is an offset from the reference point of common resource block set 3100 to the reference point of resource grid 3001.
- the offset 3011 is indicated by the number of common resource blocks for the subcarrier spacing setting ⁇ 1 .
- the resource grid 3001 includes N size, ⁇ grid1,x common resource blocks starting from the reference point of the resource grid 3001.
- the offset 3013 is an offset from the reference point of the resource grid 3001 to the reference point (N start, ⁇ BWP, i1 ) of the BWP (BandWidth Part) 3003 of index i1.
- the common resource block set 3200 is a set of common resource blocks for the subcarrier spacing setting ⁇ 2 .
- the common resource block including the point 3000 (the solid black block in the common resource block set 3200 in FIG. 3) is also called the reference point of the common resource block set 3200.
- the reference point of the common resource block set 3200 may be the common resource block with index 0 in the common resource block set 3200.
- Offset 3012 is an offset from the reference point of common resource block set 3200 to the reference point of resource grid 3002.
- the offset 3012 is indicated by the number of common resource blocks for subcarrier spacing ⁇ 2 .
- the resource grid 3002 includes N size, ⁇ grid2,x common resource blocks starting from the reference point of the resource grid 3002.
- the offset 3014 is an offset from the reference point of the resource grid 3002 to the reference point (N start, ⁇ BWP, i2 ) of the BWP 3004 with index i2.
- FIG. 4 is a diagram illustrating a configuration example of a resource grid 3001 according to one aspect of the present embodiment.
- the horizontal axis is the OFDM symbol index l sym
- the vertical axis is the subcarrier index k sc .
- the resource grid 3001 includes N size, ⁇ grid1, x N RB sc subcarriers, and includes N subframe, ⁇ symb OFDM symbols.
- the resource specified by the subcarrier index k sc and the OFDM symbol index l sym is also called a resource element (RE).
- RE resource element
- a resource block (RB) includes N RB sc consecutive subcarriers.
- a resource block is a general term for a common resource block, a physical resource block (PRB), and a virtual resource block (VRB).
- PRB physical resource block
- VRB virtual resource block
- N RB sc 12.
- a resource block unit is a set of resources corresponding to one OFDM symbol in one resource block. That is, one resource block unit includes 12 resource elements corresponding to one OFDM symbol in one resource block.
- Common resource blocks for a certain subcarrier spacing setting ⁇ are indexed in ascending order from 0 in the frequency domain in a certain common resource block set.
- the common resource block with index 0 includes (or collides with, matches) point 3000.
- Physical resource blocks for a certain subcarrier spacing setting ⁇ are indexed in ascending order from 0 in the frequency domain in a certain BWP.
- N start, ⁇ BWP, i indicates the reference point of the BWP of index i.
- a BWP is defined as a subset of common resource blocks included in a resource grid.
- a BWP includes N size , ⁇ BWP,i common resource blocks starting from a reference point N start , ⁇ BWP,i of the BWP.
- the BWP configured for a downlink carrier is also called a downlink BWP.
- BWP configured for uplink component carriers is also referred to as uplink BWP.
- An antenna port may be defined such that the channel over which symbols at an antenna port are conveyed can be deduced from the channel over which other symbols at that antenna port are conveyed. a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed).
- a channel may correspond to a physical channel.
- the symbols may correspond to OFDM symbols.
- a symbol may correspond to a resource block unit. Additionally, the symbols may correspond to resource elements.
- the large scale properties of the channel over which symbols are conveyed at one antenna port can be estimated from the channel over which symbols are conveyed at another antenna port means that the two antenna ports are called QCL (Quasi Co-Located ) is called.
- the large-scale characteristics may include at least long-term characteristics of the channel. Large-scale characteristics include delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. It may contain at least a part or all of it.
- QCL with respect to beam parameters for the first antenna port and the second antenna port means that the receive beam expected by the receiving side for the first antenna port and the received beam expected by the receiving side for the second antenna port. may be the same (or correspond).
- Terminal device 1 assumes that two antenna ports are QCL if the large-scale characteristics of the channel in which symbols are transmitted in one antenna port can be estimated from the channel in which symbols are transmitted in another antenna port. may be done.
- the two antenna ports being QCL may mean that the two antenna ports are assumed to be QCL.
- a QCL of type A for two antenna ports means that the first large-scale property of the channel over which symbols are conveyed at one antenna port can be estimated from the channel over which symbols are conveyed at another antenna port. It's okay.
- a QCL of type B for two antenna ports means that the second large-scale property of the channel over which symbols are conveyed at one antenna port can be estimated from the channel over which symbols are conveyed at another antenna port. It's okay.
- the fact that the two antenna ports are QCL of type C means that the third large-scale property of the channel over which the symbols are conveyed at one antenna port can be estimated from the channel over which the symbols are conveyed at the other antenna port. It's okay.
- the fact that the two antenna ports are QCL of type D means that the fourth large-scale property of the channel over which the symbols are conveyed at one antenna port can be estimated from the channel over which the symbols are conveyed at the other antenna port. It's okay.
- the first large-scale characteristic may include all of Doppler shift, Doppler spread, average delay, and delay spread.
- the second large-scale characteristic may include both Doppler shift and Doppler broadening.
- the third large-scale characteristic may include both Doppler shift and average delay.
- the fourth large-scale characteristic may include spatial reception parameters (spatial direction information, beam information).
- the DMRS antenna port may be a DMRS port.
- the antenna port for PTRS may be a PTRS port.
- the antenna port associated with PTRS may be a PTRS port.
- the antenna port for SRS may be an SRS port.
- the antenna port for DMRS may be a DMRS port.
- the antenna port associated with DMRS may be
- Carrier aggregation may mean performing communication using a plurality of aggregated serving cells. Moreover, carrier aggregation may mean performing communication using a plurality of aggregated component carriers. Moreover, carrier aggregation may mean performing communication using a plurality of aggregated downlink component carriers. Moreover, carrier aggregation may be performing communication using a plurality of aggregated uplink component carriers.
- FIG. 5 is a schematic block diagram showing a configuration example of the base station device 3 according to one aspect of the present embodiment.
- the base station device 3 includes at least part or all of a radio transmitting/receiving unit (physical layer processing unit) 30 and/or a higher layer processing unit 34.
- the radio transmitting/receiving section 30 includes at least part or all of an antenna section 31, an RF (Radio Frequency) section 32, and a baseband section 33.
- the upper layer processing section 34 includes at least part or all of a medium access control layer processing section 35 and a radio resource control (RRC) layer processing section 36 .
- RRC radio resource control
- the wireless transmitter/receiver 30 includes at least part or all of a wireless transmitter 30a and a wireless receiver 30b.
- the device configurations of the baseband section included in the wireless transmitting section 30a and the baseband section included in the wireless receiving section 30b may be the same or different.
- the device configurations of the RF unit included in the wireless transmitter 30a and the RF unit included in the wireless receiver 30b may be the same or different.
- the device configurations of the antenna section included in the wireless transmitting section 30a and the antenna section included in the wireless receiving section 30b may be the same or different.
- the wireless transmitter 30a may generate and transmit a PDSCH baseband signal.
- the wireless transmitter 30a may generate and transmit a PDCCH baseband signal.
- the wireless transmitter 30a may generate and transmit a PBCH baseband signal.
- the wireless transmitter 30a may generate and transmit a baseband signal of a synchronization signal.
- the wireless transmitter 30a may generate and transmit a PDSCH DMRS baseband signal.
- the wireless transmitter 30a may generate and transmit a PDCCH DMRS baseband signal.
- the wireless transmitter 30a may generate and transmit a CSI-RS baseband signal.
- the wireless transmitter 30a may generate and transmit a DL PTRS baseband signal.
- the wireless receiving unit 30b may receive PRACH.
- the radio receiving unit 30b may receive and demodulate PUCCH.
- the radio receiving unit 30b may receive and demodulate the PUSCH.
- the wireless receiving unit 30b may receive PUCCH DMRS.
- the wireless receiving unit 30b may receive PUSCH DMRS.
- the wireless receiving unit 30b may receive UL PTRS.
- the wireless receiving section 30b may receive SRS.
- the upper layer processing unit 34 outputs downlink data (transport block) to the wireless transmitting/receiving unit 30 (or wireless transmitting unit 30a).
- the upper layer processing unit 34 processes the MAC (Medium Access Control) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.
- MAC Medium Access Control
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- RRC Radio Link Control
- the medium access control layer processing unit 35 included in the upper layer processing unit 34 performs MAC layer processing.
- the radio resource control layer processing unit 36 included in the upper layer processing unit 34 performs RRC layer processing.
- the radio resource control layer processing unit 36 manages various setting information/parameters (RRC parameters) of the terminal device 1.
- RRC parameters setting information/parameters
- the radio resource control layer processing unit 36 sets parameters based on the RRC message received from the terminal device 1.
- the wireless transmitter/receiver 30 performs processing such as modulation and encoding.
- the wireless transmitter/receiver 30 (or wireless transmitter 30a) modulates, encodes, and generates a baseband signal (converts to a time continuous signal) on downlink data to generate a physical signal and transmits it to the terminal device 1.
- the wireless transmitter/receiver 30 (or the wireless transmitter 30a) may place a physical signal on a certain component carrier and transmit it to the terminal device 1.
- the wireless transmitter/receiver 30 (or the wireless receiver 30b) performs processes such as demodulation and decoding.
- the wireless transmitting/receiving section 30 (or the wireless receiving section 30b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing section 34.
- the wireless transmitter/receiver 30 (or the wireless receiver 30b) may perform a channel access procedure prior to transmitting the physical signal.
- the RF unit 32 converts the signal received via the antenna unit 31 into a baseband signal by orthogonal demodulation (down convert), and removes unnecessary frequency components.
- the RF section 32 outputs the processed analog signal to the baseband section.
- the baseband section 33 converts the analog signal input from the RF section 32 into a digital signal.
- the baseband unit 33 removes a portion corresponding to a CP (Cyclic Prefix) from the converted digital signal, performs Fast Fourier Transform (FFT) on the signal from which the CP has been removed, and transforms the frequency domain signal. Extract.
- CP Cyclic Prefix
- FFT Fast Fourier Transform
- the baseband unit 33 performs an inverse fast Fourier transform (IFFT) on the data to generate an OFDM symbol, adds a CP to the generated OFDM symbol, generates a baseband digital signal, and generates a baseband digital signal. Convert band digital signals to analog signals.
- the baseband section 33 outputs the converted analog signal to the RF section 32.
- IFFT inverse fast Fourier transform
- the RF section 32 removes extra frequency components from the analog signal input from the baseband section 33 using a low-pass filter, upconverts the analog signal to a carrier frequency, and transmits it via the antenna section 31. . Furthermore, the RF section 32 may have a function of controlling transmission power.
- the RF section 32 is also referred to as a transmission power control section.
- One or more serving cells may be configured for the terminal device 1.
- Each of the serving cells configured for the terminal device 1 is one of PCell (Primary cell), PSCell (Primary SCG cell), and SCell (Secondary Cell). Good too.
- PCell is a serving cell included in MCG (Master Cell Group).
- the PCell is a cell (an executed cell) in which the terminal device 1 performs an initial connection establishment procedure or a connection re-establishment procedure.
- a PSCell is a serving cell included in an SCG (Secondary Cell Group). PSCell is a serving cell to which random access is performed by the terminal device 1.
- SCell may be included in either MCG or SCG.
- the serving cell group is a name that includes at least MCG and SCG.
- a serving cell group may include one or more serving cells (or component carriers).
- One or more serving cells (or component carriers) included in a serving cell group may be operated by carrier aggregation.
- One or more downlink BWPs may be configured for each serving cell (or downlink component carrier).
- One or more uplink BWPs may be configured for each serving cell (or uplink component carrier).
- one downlink BWP may be configured as an active downlink BWP (or one downlink BWP may be configured as an active downlink BWP). may be activated).
- one uplink BWP may be configured as an active uplink BWP (or one uplink BWP may be configured as an active uplink BWP). may be activated).
- the PDSCH, PDCCH, and CSI-RS may be received in the active downlink BWP.
- the terminal device 1 may attempt to receive the PDSCH, PDCCH, and CSI-RS in the active downlink BWP.
- PUCCH and PUSCH may be transmitted in active uplink BWP.
- the terminal device 1 may transmit PUCCH and PUSCH in the active uplink BWP.
- the active downlink BWP and the active uplink BWP are also collectively referred to as active BWP.
- PDSCH, PDCCH, and CSI-RS may not be received in downlink BWPs other than active downlink BWPs (inactive downlink BWPs).
- the terminal device 1 does not have to attempt to receive the PDSCH, PDCCH, and CSI-RS in a downlink BWP that is not an active downlink BWP.
- PUCCH and PUSCH may not be transmitted in an uplink BWP that is not an active uplink BWP (inactive uplink BWP).
- the terminal device 1 does not have to transmit PUCCH and PUSCH in an uplink BWP that is not an active uplink BWP.
- the inactive downlink BWP and the inactive uplink BWP are collectively referred to as inactive BWP.
- Downlink BWP switching is a procedure for deactivating one active downlink BWP of a certain serving cell and activating any of the inactive downlink BWPs of the certain serving cell.
- Downlink BWP switching may be controlled by a BWP field included in downlink control information. Downlink BWP switching may be controlled based on upper layer parameters.
- Uplink BWP switching is used to deactivate one active uplink BWP and activate any of the inactive uplink BWPs that are not the one active uplink BWP.
- Uplink BWP switching may be controlled by a BWP field included in downlink control information. Uplink BWP switching may be controlled based on upper layer parameters.
- two or more downlink BWPs may not be configured as active downlink BWPs.
- One downlink BWP may be active for a serving cell at a certain time.
- two or more uplink BWPs may not be configured as active uplink BWPs.
- One uplink BWP may be active for a serving cell at a certain time.
- FIG. 6 is a schematic block diagram showing a configuration example of the terminal device 1 according to one aspect of the present embodiment.
- the terminal device 1 includes at least one or all of a wireless transmitting/receiving section (physical layer processing section) 10 and an upper layer processing section 14.
- the radio transmitter/receiver 10 includes at least part or all of an antenna section 11, an RF section 12, and a baseband section 13.
- the upper layer processing section 14 includes at least part or all of the medium access control layer processing section 15 and the radio resource control layer processing section 16.
- the wireless transmitter/receiver 10 includes at least part or all of a wireless transmitter 10a and a wireless receiver 10b.
- the device configurations of the baseband section 13 included in the wireless transmitting section 10a and the baseband section 13 included in the wireless receiving section 10b may be the same or different.
- the device configurations of the RF section 12 included in the wireless transmitter 10a and the RF section 12 included in the wireless receiver 10b may be the same or different.
- the device configurations of the antenna section 11 included in the wireless transmitting section 10a and the antenna section 11 included in the wireless receiving section 10b may be the same or different.
- the wireless transmitter 10a may generate and transmit a PRACH baseband signal.
- the wireless transmitter 10a may generate and transmit a PUCCH baseband signal.
- the wireless transmitter 10a may generate and transmit a PUSCH baseband signal.
- the wireless transmitter 10a may generate and transmit a PUCCH DMRS baseband signal.
- the wireless transmitter 10a may generate and transmit a PUSCH DMRS baseband signal.
- the wireless transmitter 10a may generate and transmit a UL PTRS baseband signal.
- the wireless transmitter 10a may generate and transmit an SRS baseband signal. Generating the SRS baseband signal may be generating an SRS sequence.
- the radio receiving unit 10b may receive the PDSCH and demodulate it.
- the radio receiving unit 10b may receive the PDCCH and demodulate it.
- the radio receiving unit 10b may receive and demodulate the PBCH.
- the wireless receiving section 10b may receive a synchronization signal.
- the radio receiving unit 10b may receive PDSCH DMRS.
- the radio receiving unit 10b may receive PDCCH DMRS.
- the wireless receiving unit 10b may receive CSI-RS.
- the wireless receiving unit 10b may receive DL PTRS.
- the upper layer processing unit 14 outputs uplink data (transport block) to the wireless transmitting/receiving unit 10 (or wireless transmitting unit 10a).
- the upper layer processing unit 14 processes the MAC layer, packet data integration protocol layer, radio link control layer, and RRC layer.
- the medium access control layer processing unit 15 included in the upper layer processing unit 14 performs MAC layer processing.
- the radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs RRC layer processing.
- the radio resource control layer processing unit 16 manages various setting information/parameters (RRC parameters) of the terminal device 1.
- RRC parameters setting information/parameters
- the radio resource control layer processing unit 16 sets RRC parameters based on the RRC message received from the base station device 3.
- the wireless transmitter/receiver 10 performs processing such as modulation and encoding.
- the wireless transmitter/receiver 10 (or the wireless transmitter 10a) generates a physical signal by modulating, encoding, and generating a baseband signal (converting to a time continuous signal) uplink data, and transmits the physical signal to the base station device 3. do.
- the wireless transmitter/receiver 10 (or the wireless transmitter 10a) may place a physical signal in a certain BWP (active uplink BWP) and transmit it to the base station device 3.
- BWP active uplink BWP
- the wireless transmitter/receiver 10 (or the wireless receiver 10b) performs processes such as demodulation and decoding.
- the radio transmitter/receiver 10 (or the radio receiver 30b) may receive a physical signal in a certain BWP (active downlink BWP) of a certain serving cell.
- the wireless transmitting/receiving unit 10 (or the wireless receiving unit 10b) separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14.
- the wireless transmitter/receiver 10 (wireless receiver 10b) may perform a channel access procedure prior to transmitting the physical signal.
- the RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by orthogonal demodulation (down convert), and removes unnecessary frequency components.
- the RF section 12 outputs the processed analog signal to the baseband section 13.
- the baseband section 13 converts the analog signal input from the RF section 12 into a digital signal.
- the baseband unit 13 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal, performs Fast Fourier Transform (FFT) on the signal from which CP has been removed, and converts the signal in the frequency domain. Extract.
- CP Cyclic Prefix
- FFT Fast Fourier Transform
- the baseband unit 13 performs an inverse fast Fourier transform (IFFT) on uplink data to generate an OFDM symbol, adds a CP to the generated OFDM symbol, and generates a baseband digital signal. , converts baseband digital signals to analog signals.
- the baseband section 13 outputs the converted analog signal to the RF section 12.
- IFFT inverse fast Fourier transform
- the RF section 12 removes extra frequency components from the analog signal input from the baseband section 13 using a low-pass filter, upconverts the analog signal to a carrier frequency, and transmits it via the antenna section 11. . Further, the RF section 12 may have a function of controlling transmission power.
- the RF section 12 is also referred to as a transmission power control section.
- Physical signal is a general term for downlink physical channel, downlink physical signal, uplink physical channel, and uplink physical channel.
- a physical channel is a general term for a downlink physical channel and an uplink physical channel.
- a physical signal is a general term for a downlink physical signal and an uplink physical signal.
- the uplink physical channel may correspond to a set of resource elements that convey information that occurs in a higher layer.
- the uplink physical channel may be a physical channel used in an uplink component carrier.
- the uplink physical channel may be transmitted by the terminal device 1.
- the uplink physical channel may be received by the base station device 3.
- at least some or all of the following uplink physical channels may be used.
- ⁇ PUCCH Physical Uplink Control CHannel
- PUSCH Physical Uplink Shared CHannel
- PRACH Physical Random Access CHannel
- PUCCH may be used to transmit uplink control information (UCI).
- UCI uplink control information
- PUCCH may be transmitted to deliver, transmit, convey uplink control information.
- Uplink control information may be mapped to PUCCH.
- the terminal device 1 may transmit a PUCCH in which uplink control information is arranged.
- the base station device 3 may receive the PUCCH in which uplink control information is arranged.
- Uplink control information (uplink control information bits, uplink control information sequences, uplink control information types) includes channel state information (CSI), scheduling request (SR), HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) containing at least some or all of the information.
- CSI channel state information
- SR scheduling request
- HARQ-ACK Hybrid Automatic Repeat request ACKnowledgement
- Channel state information is also called channel state information bits or channel state information series.
- a scheduling request is also called a scheduling request bit or a scheduling request series.
- HARQ-ACK information is also called HARQ-ACK information bit or HARQ-ACK information sequence.
- the HARQ-ACK information may include at least a HARQ-ACK corresponding to a transport block (TB).
- HARQ-ACK may indicate ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to the transport block.
- the ACK may indicate that the transport block has been decoded successfully.
- a NACK may indicate that the transport block has not been decoded successfully.
- HARQ-ACK information may include a HARQ-ACK codebook that includes one or more HARQ-ACK bits.
- a transport block is a sequence of information bits delivered from an upper layer.
- the information bit series is also called a bit series.
- the transport block may be delivered from UL-SCH (UpLink - Shared CHannel) of the transport layer.
- One information bit may indicate “0” or “1”.
- Fields included in the DCI format may consist of one or more information bits.
- the unit of the number of information bits may be bits.
- the n information bits may represent a value raised to the 2 ⁇ n power at most.
- HARQ-ACK for transport blocks is sometimes referred to as HARQ-ACK for PDSCH.
- HARQ-ACK for PDSCH indicates HARQ-ACK for the transport block included in the PDSCH.
- HARQ-ACK may indicate ACK or NACK corresponding to one CBG (Code Block Group) included in the transport block.
- CBG Code Block Group
- the scheduling request may be used at least to request UL-SCH resources for new transmission.
- the scheduling request bit may be used to indicate either positive SR or negative SR.
- the fact that the scheduling request bit indicates a positive SR is also referred to as "a positive SR is transmitted.”
- a positive SR may indicate that the terminal device 1 requests UL-SCH resources for initial transmission.
- a positive SR may indicate that a scheduling request is triggered by an upper layer.
- a positive SR may be communicated when a scheduling request is indicated by an upper layer.
- the fact that the scheduling request bit indicates a negative SR is also referred to as "a negative SR is transmitted.”
- a negative SR may indicate that the terminal device 1 does not request UL-SCH resources for initial transmission.
- a negative SR may indicate that no scheduling request is triggered by the upper layer.
- a negative SR may be communicated if no scheduling request is directed by an upper layer.
- the channel state information may include at least some or all of a channel quality indicator (CQI), a precoder matrix indicator (PMI), and a rank indicator (RI).
- CQI is an index related to the quality of a propagation path (eg, propagation intensity) or physical channel quality
- PMI is an index related to a precoder
- RI is an index related to transmission rank (or number of transmission layers).
- Channel state information is an indicator regarding the reception state of at least a physical signal (for example, CSI-RS) used for channel measurement.
- the value of the channel state information may be determined by the terminal device 1 based on the reception state assumed by at least the physical signal used for channel measurement.
- Channel measurements may include interference measurements.
- PUCCH may correspond to PUCCH format.
- PUCCH may be a set of resource elements used to convey the PUCCH format.
- PUCCH may include a PUCCH format.
- PUCCH may be transmitted with a certain PUCCH format. Note that the PUCCH format may be interpreted as an information format. Further, the PUCCH format may be interpreted as a set of information set in a certain information format.
- PUSCH may be used to convey one or both of a transport block and uplink control information.
- the transport block may be placed on PUSCH.
- Transport blocks delivered by UL-SCH may be placed on PUSCH.
- Uplink control information may be placed on PUSCH.
- the terminal device 1 may transmit a PUSCH in which one or both of a transport block and uplink control information are arranged.
- the base station device 3 may receive a PUSCH in which one or both of a transport block and uplink control information are arranged.
- PRACH may be sent to convey a random access preamble.
- the terminal device 1 may transmit PRACH.
- the base station device 3 may receive PRACH.
- x u is a ZC (Zadoff Chu) series.
- j is an imaginary unit.
- ⁇ is pi.
- C v corresponds to a cyclic shift of the PRACH series.
- LRA corresponds to the length of the PRACH sequence.
- L RA is 839 or 139.
- i is an integer in the range from 0 to L RA ⁇ 1.
- u is a sequence index for the PRACH sequence.
- the random access preamble is identified based on the cyclic shift C v of the PRACH sequence and the sequence index u for the PRACH sequence. An index may be attached to each of the 64 identified random access preambles.
- the uplink physical signal may correspond to a set of resource elements. Uplink physical signals may not be used to convey information that occurs in upper layers. Note that the uplink physical signal may be used to transmit information generated in the physical layer.
- the uplink physical signal may be a physical signal used in an uplink component carrier.
- the terminal device 1 may transmit an uplink physical signal.
- the base station device 3 may receive an uplink physical signal. In the wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical signals may be used. ⁇ UL DMRS (UpLink Demodulation Reference Signal) ⁇ SRS (Sounding Reference Signal) ⁇ UL PTRS (UpLink Phase Tracking Reference Signal)
- UL DMRS is a generic term for DMRS for PUSCH and DMRS for PUCCH.
- a set of antenna ports for DMRS for PUSCH may be provided based on the set of antenna ports for the PUSCH.
- the set of DMRS antenna ports for a PUSCH may be the same as the set of antenna ports for the PUSCH.
- Transmission of PUSCH and transmission of DMRS for the PUSCH may be indicated (or scheduled) by one DCI format.
- PUSCH and DMRS for PUSCH may be collectively referred to as PUSCH.
- Transmitting PUSCH may be transmitting PUSCH and DMRS for the PUSCH.
- the propagation path of the PUSCH may be estimated from the DMRS for the PUSCH.
- the set of antenna ports of DMRS for PUCCH may be the same as the set of antenna ports of PUCCH.
- the transmission of PUCCH and the transmission of DMRS for the PUCCH may be indicated (or triggered) by one DCI format.
- One or both of the PUCCH to resource element mapping and the DMRS to resource element mapping for the PUCCH may be provided by one PUCCH format.
- PUCCH and DMRS for PUCCH may be collectively referred to as PUCCH. Transmitting the PUCCH may be transmitting the PUCCH and DMRS for the PUCCH.
- the propagation path of the PUCCH may be estimated from the DMRS for the PUCCH.
- a downlink physical channel may correspond to a set of resource elements conveying information originating in upper layers.
- the downlink physical channel may be a physical channel used in a downlink component carrier.
- the base station device 3 may transmit a downlink physical channel.
- the terminal device 1 may receive the downlink physical channel.
- at least some or all of the following downlink physical channels may be used.
- PBCH Physical Broadcast Channel
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- the PBCH may be transmitted to convey one or both of an MIB (Master Information Block) and physical layer control information.
- the physical layer control information is information generated in the physical layer.
- MIB is a set of parameters arranged in BCCH (Broadcast Control CHannel), which is a logical channel of the MAC layer.
- BCCH Broadcast Control CHannel
- the BCCH is placed in a BCH which is a transport layer channel.
- BCH may be mapped to PBCH.
- the terminal device 1 may receive a PBCH in which one or both of the MIB and the physical layer control information are arranged.
- the base station device 3 may transmit a PBCH in which one or both of the MIB and physical layer control information are arranged.
- the physical layer control information may consist of 8 bits.
- the physical layer control information may include at least some or all of 0A to 0D below.
- the radio frame bit is used to indicate the radio frame in which the PBCH is transmitted (the radio frame including the slot in which the PBCH is transmitted).
- Radio frame bits include 4 bits.
- the radio frame bits may consist of 4 bits of a 10-bit radio frame indicator.
- a radio frame indicator may be used to at least identify radio frames from index 0 to index 1023.
- the half radio frame bit is used to indicate whether the PBCH is transmitted in the first five subframes or the latter five subframes of the radio frame in which the PBCH is transmitted.
- the half radio frame may include five subframes.
- a half radio frame may be configured by the first five subframes out of ten subframes included in the radio frame.
- the half radio frame may be configured by the latter five subframes among the ten subframes included in the radio frame.
- the SS/PBCH block index bit is used to indicate the SS/PBCH block index.
- the SS/PBCH block index bits include 3 bits.
- the SS/PBCH block index bits may be comprised of 3 bits of the 6-bit SS/PBCH block index indicator.
- the SS/PBCH block index indicator may be used at least to identify SS/PBCH blocks from index 0 to index 63.
- the subcarrier offset bit is used to indicate the subcarrier offset.
- the subcarrier offset may be used to indicate the difference between the first subcarrier to which the PBCH is mapped and the first subcarrier to which the control resource set with index 0 is mapped.
- the PDCCH may be transmitted to convey downlink control information (DCI). Downlink control information may be mapped to the PDCCH.
- the terminal device 1 may receive a PDCCH in which downlink control information is arranged.
- the base station device 3 may transmit a PDCCH in which downlink control information is arranged.
- Downlink control information may be transmitted with DCI format.
- the DCI format may be interpreted as a format of downlink control information. Further, the DCI format may be interpreted as a set of downlink control information set in a certain format of downlink control information.
- DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats.
- the uplink DCI format is a generic term for DCI format 0_0 and DCI format 0_1.
- the downlink DCI format is a generic term for DCI format 1_0 and DCI format 1_1.
- DCI format 0_0 is used at least for scheduling PUSCH located in a certain cell.
- DCI format 0_0 is configured to include at least some or all of the fields 1A to 1E.
- the DCI format specific field may indicate whether the DCI format including the DCI format specific field is an uplink DCI format or a downlink DCI format. That is, the DCI format specific field may be included in each of the uplink DCI format and the downlink DCI format.
- the DCI format specific field included in DCI format 0_0 may indicate 0.
- the frequency domain resource allocation field included in DCI format 0_0 may be used to indicate frequency resource allocation for PUSCH.
- the time domain resource allocation field included in DCI format 0_0 may be used to indicate time resource allocation for PUSCH.
- the frequency hopping flag field may be used to indicate whether frequency hopping is applied to PUSCH.
- the MCS field included in DCI format 0_0 may be used at least to indicate one or both of the modulation scheme and target coding rate for PUSCH.
- the target coding rate may be a target coding rate for a transport block placed in PUSCH.
- the size of the transport block (TBS: Transport Block Size) placed on the PUSCH may be determined based on one or both of the target coding rate and the modulation method for the PUSCH.
- DCI format 0_0 does not need to include fields used for CSI requests.
- DCI format 0_0 may not include a carrier indicator field. That is, the serving cell to which the uplink component carrier to which the PUSCH scheduled according to DCI format 0_0 is arranged may belong may be the same as the serving cell of the uplink component carrier to which the PDCCH including the DCI format 0_0 is arranged. Based on detecting DCI format 0_0 on a certain downlink component carrier of a certain serving cell, the terminal device 1 recognizes that the PUSCH scheduled according to the DCI format 0_0 is to be allocated to the uplink component carrier of the certain serving cell. Good too.
- DCI format 0_0 does not need to include the BWP field.
- DCI format 0_0 may be a DCI format that schedules PUSCH without changing the active uplink BWP.
- the terminal device 1 may recognize that the PUSCH is to be transmitted without switching the active uplink BWP based on the detection of the DCI format 0_0 used for PUSCH scheduling.
- DCI format 0_1 is used at least for scheduling PUSCH placed in a certain cell.
- DCI format 0_1 is configured to include at least some or all of fields 2A to 2H.
- the DCI format specific field included in DCI format 0_1 may indicate 0.
- the frequency domain resource allocation field included in DCI format 0_1 may be used to indicate frequency resource allocation for PUSCH.
- the time domain resource allocation field included in DCI format 0_1 may be used to indicate time resource allocation for PUSCH.
- the MCS field included in DCI format 0_1 may be used at least to indicate part or all of the modulation scheme and/or target coding rate for PUSCH.
- the BWP field of DCI format 0_1 may be used to indicate the uplink BWP where the PUSCH scheduled according to the DCI format 0_1 is arranged. That is, DCI format 0_1 may be accompanied by a change in the active uplink BWP.
- the terminal device 1 may recognize the uplink BWP where the PUSCH is arranged based on detecting the DCI format 0_1 used for scheduling the PUSCH.
- the DCI format 0_1 that does not include the BWP field may be a DCI format that schedules PUSCH without changing the active uplink BWP.
- the terminal device 1 transmits the PUSCH without switching the active uplink BWP based on detecting DCI format D0_1, which is the DCI format 0_1 used for PUSCH scheduling and does not include the BWP field. You may recognize that.
- the BWP field is included in DCI format 0_1, if the terminal device 1 does not support the BWP switching function using DCI format 0_1, the BWP field may be ignored by the terminal device 1. In other words, the terminal device 1 that does not support the BWP switching function switches the active uplink BWP based on detecting DCI format 0_1 used for PUSCH scheduling and including the BWP field. It may be recognized that the PUSCH is to be transmitted without performing. Here, if the terminal device 1 supports the BWP switching function, it may be reported that "the terminal device 1 supports the BWP switching function" in the RRC layer function information reporting procedure.
- the CSI request field is used to instruct CSI reporting.
- the carrier indicator field may be used to indicate the uplink component carrier on which the PUSCH is allocated. If DCI format 0_1 does not include a carrier indicator field, the uplink component carrier on which the PUSCH is allocated is the same as the uplink component carrier on which the PDCCH including DCI format 0_1 used for scheduling of the PUSCH is allocated. Good too.
- the PUSCH configured in the certain serving cell group may be 1 bit or more (for example, 3 bits).
- the scheduling of PUSCH allocated to the certain serving cell group may be 0 bits (or the carrier indicator field is included in the DCI format 0_1 used for scheduling the PUSCH allocated to the certain serving cell group). (optional).
- DCI format 1_0 is used at least for scheduling PDSCH allocated to a certain cell.
- DCI format 1_0 is configured to include at least some or all of 3A to 3F.
- the DCI format specific field included in DCI format 1_0 may indicate 1.
- the frequency domain resource allocation field included in DCI format 1_0 may be used at least to indicate frequency resource allocation for PDSCH.
- the time domain resource allocation field included in DCI format 1_0 may be used at least to indicate the allocation of time resources for the PDSCH.
- the MCS field (MCS) included in DCI format 1_0 may be used at least to indicate one or both of the modulation scheme and target coding rate for the PDSCH.
- the target coding rate may be a target coding rate for a transport block placed in a PDSCH.
- the size of a transport block (TBS: Transport Block Size) allocated to a PDSCH may be determined based on one or both of a target coding rate and a modulation scheme for the PDSCH.
- the PDSCH_HARQ feedback timing indication field may be used to indicate the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH.
- the PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in the PUCCH resource set.
- a PUCCH resource set may include one or more PUCCH resources.
- DCI format 1_0 may not include a carrier indicator field. That is, the downlink component carrier on which the PDSCH scheduled according to DCI format 1_0 is arranged may be the same as the downlink component carrier on which the PDCCH including the DCI format 1_0 is arranged. Based on detecting DCI format 1_0 on a certain downlink component carrier, the terminal device 1 may recognize that the PDSCH scheduled according to the DCI format 1_0 is to be allocated to the downlink component carrier.
- DCI format 1_0 does not need to include the BWP field.
- DCI format 1_0 may be a DCI format that schedules PDSCH without changing the active downlink BWP.
- the terminal device 1 may recognize that the PDSCH is to be received without switching the active downlink BWP based on the detection of the DCI format 1_0 used for PDSCH scheduling.
- DCI format 1_1 is used at least for scheduling PDSCHs arranged in a certain cell.
- DCI format 1_1 is configured to include at least some or all of 4A to 4I.
- the DCI format specific field included in DCI format 1_1 may indicate 1.
- the frequency domain resource allocation field included in DCI format 1_1 may be used at least to indicate frequency resource allocation for PDSCH.
- the time domain resource allocation field included in DCI format 1_1 may be used at least to indicate the allocation of time resources for the PDSCH.
- the MCS field (MCS) included in DCI format 1_1 may be used at least to indicate one or both of the modulation scheme and target coding rate for the PDSCH.
- the PDSCH_HARQ feedback timing indication field indicates the offset from the slot containing the last OFDM symbol of the PDSCH to the slot containing the first OFDM symbol of the PUCCH. may be used at least. If the DCI format 1_1 does not include the PDSCH_HARQ feedback timing indication field, the offset from the slot containing the last OFDM symbol of PDSCH to the slot containing the first OFDM symbol of PUCCH may be specified by upper layer parameters. good.
- the PUCCH resource indication field may be a field indicating an index of one or more PUCCH resources included in the PUCCH resource set.
- the BWP field of DCI format 1_1 may be used to indicate the downlink BWP where the PDSCH scheduled according to DCI format 1_1 is arranged. That is, DCI format 1_1 may be accompanied by a change in the active downlink BWP.
- the terminal device 1 may recognize the downlink BWP where the PUSCH is arranged based on detecting the DCI format 1_1 used for PDSCH scheduling.
- the DCI format 1_1 that does not include the BWP field may be a DCI format that schedules PDSCH without changing the active downlink BWP.
- the terminal device 1 receives the PDSCH without switching the active downlink BWP based on detecting the DCI format 1_1 used for PDSCH scheduling and which does not include the BWP field. You may recognize that.
- the BWP field is included in the DCI format 1_1, if the terminal device 1 does not support the BWP switching function according to the DCI format 1_1, the BWP field may be ignored by the terminal device 1. In other words, the terminal device 1 that does not support the BWP switching function switches the active downlink BWP based on detecting the DCI format 1_1 used for PDSCH scheduling and including the BWP field. It may also be possible to recognize that the PDSCH is received without performing. Here, if the terminal device 1 supports the BWP switching function, it may be reported that "the terminal device 1 supports the BWP switching function" in the RRC layer function information reporting procedure.
- the carrier indicator field may be used to indicate the downlink component carrier on which the PDSCH is allocated. If the DCI format 1_1 does not include a carrier indicator field, the downlink component carrier on which the PDSCH is allocated is the same as the downlink component carrier on which the PDCCH including the DCI format 1_1 used for scheduling the PDSCH is allocated. Good too.
- the number of PDSCHs allocated to the certain serving cell group is 2 or more (when downlink carrier aggregation is operated in a certain serving cell group), the number of PDSCHs allocated to the certain serving cell group is
- the number of bits of the carrier indicator field included in the DCI format 1_1 used for scheduling may be 1 bit or more (for example, 3 bits).
- the scheduling of the PDSCH allocated to the certain serving cell group may be 0 bits (or the carrier indicator field may be included in the DCI format 1_1 used for scheduling the PDSCH allocated to the certain serving cell group). (optional).
- PDSCH may be transmitted to convey transport blocks.
- PDSCH may be used to transmit transport blocks delivered by DL-SCH.
- PDSCH may be used to convey transport blocks.
- a transport block may be placed on a PDSCH.
- a transport block corresponding to DL-SCH may be placed on PDSCH.
- the base station device 3 may transmit the PDSCH.
- the terminal device 1 may receive the PDSCH.
- a downlink physical signal may correspond to a set of resource elements.
- the downlink physical signals may not carry information generated in higher layers.
- the downlink physical signal may be a physical signal used in a downlink component carrier.
- the downlink physical signal may be transmitted by the base station device 3.
- the downlink physical signal may be transmitted by the terminal device 1.
- at least some or all of the following downlink physical signals may be used.
- SS Synchronization signal
- DL DMRS DownLink DeModulation Reference Signal
- CSI-RS Channel State Information-Reference Signal
- DL PTRS DownLink Phase Tracking Reference Signal
- the synchronization signal may be used by the terminal device 1 to synchronize one or both of the downlink frequency domain and time domain.
- the synchronization signal is a general term for PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal).
- FIG. 7 is a diagram illustrating a configuration example of an SS/PBCH block according to one aspect of the present embodiment.
- the horizontal axis is the time axis (OFDM symbol index l sym ), and the vertical axis shows the frequency domain.
- Block 700 also shows a set of resource elements for the PSS.
- Block 720 also shows a set of resource elements for SSS.
- four blocks (blocks 710, 711, 712, and 713) are for the PBCH and the DMRS for the PBCH (DMRS related to the PBCH, DMRS included in the PBCH, and DMRS corresponding to the PBCH). indicates a set of resource elements.
- the SS/PBCH block includes PSS, SSS, and PBCH. Further, the SS/PBCH block includes four consecutive OFDM symbols.
- An SS/PBCH block includes 240 subcarriers. PSS is placed on the 57th to 183rd subcarriers in the first OFDM symbol. SSS is placed on the 57th to 183rd subcarriers in the third OFDM symbol.
- the 1st to 56th subcarriers of the first OFDM symbol may be set to zero.
- the 184th to 240th subcarriers of the first OFDM symbol may be set to zero.
- the 49th to 56th subcarriers of the third OFDM symbol may be set to zero.
- the 184th to 192nd subcarriers of the third OFDM symbol may be set to zero.
- the PBCH is allocated to the 1st to 240th subcarriers of the second OFDM symbol, and on which the DMRS for the PBCH is not allocated.
- the PBCH is allocated to the 1st to 48th subcarriers of the third OFDM symbol, and on which the DMRS for the PBCH is not allocated.
- the PBCH is allocated to the 193rd to 240th subcarriers of the third OFDM symbol, and on which the DMRS for the PBCH is not allocated.
- the PBCH is allocated to the 1st to 240th subcarriers of the 4th OFDM symbol, and on which the DMRS for the PBCH is not allocated.
- the antenna ports of PSS, SSS, PBCH, and DMRS for PBCH may be the same.
- a PBCH on which a PBCH symbol at a certain antenna port is transmitted is a DMRS for a PBCH allocated to the slot to which the PBCH is mapped, and a DMRS for the PBCH included in the SS/PBCH block in which the PBCH is included. may be estimated by DMRS.
- DL DMRS is a collective term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.
- the set of antenna ports for the DMRS for the PDSCH may be provided based on the set of antenna ports for the PDSCH. That is, the set of DMRS antenna ports for a PDSCH may be the same as the set of antenna ports for the PDSCH.
- the transmission of a PDSCH and the transmission of a DMRS for the PDSCH may be indicated (or scheduled) by one DCI format.
- a PDSCH and a DMRS for the PDSCH may be collectively referred to as a PDSCH.
- Transmitting a PDSCH may include transmitting a PDSCH and a DMRS for the PDSCH.
- the propagation path of the PDSCH may be estimated from the DMRS for the PDSCH. If the set of resource elements to which a certain PDSCH symbol is transmitted and the set of resource elements to which the DMRS symbol for the certain PDSCH is transmitted are included in the same precoding resource group (PRG). In this case, the PDSCH on which the symbols of the PDSCH at an antenna port are conveyed may be estimated by the DMRS for the PDSCH.
- PRG precoding resource group
- the antenna port of DMRS for PDCCH (DMRS related to PDCCH, DMRS included in PDCCH, DMRS corresponding to PDCCH) may be the same as the antenna port for PDCCH.
- the PDCCH may be estimated from the DMRS for the PDCCH. That is, the propagation path of the PDCCH may be estimated from the DMRS for the PDCCH. If the same precoder is applied (assumed to be (assumed to be applicable), the PDCCH on which the symbols of the PDCCH at an antenna port are conveyed may be estimated by the DMRS for the PDCCH.
- BCH Broadcast CHannel
- UL-SCH Uplink-Shared CHannel
- DL-SCH Downlink-Shared CHannel
- a transport channel defines the relationship between a physical layer channel and a MAC layer channel (also called a logical channel).
- the transport layer BCH is mapped to the physical layer PBCH. In other words, transport blocks passing through the transport layer BCH are delivered to the physical layer PBCH. Furthermore, the transport layer UL-SCH is mapped to the physical layer PUSCH. In other words, a transport block passing through the UL-SCH of the transport layer is delivered to the PUSCH of the physical layer. Furthermore, the DL-SCH of the transport layer is mapped to the PDSCH of the physical layer. In other words, transport blocks passing through the DL-SCH in the transport layer are delivered to the PDSCH in the physical layer.
- One UL-SCH and one DL-SCH may be provided for each serving cell.
- BCH may be given to PCell.
- BCH does not have to be given to PSCell and SCell.
- HARQ Hybrid Automatic Repeat reQuest
- BCCH Broadcast Control CHannel
- CCCH Common Control CHannel
- DCCH Dedicated Control CHannel
- BCCH is an RRC layer channel used to transmit MIB or system information.
- CCCH Common Control CHannel
- CCCH Common Control CHannel
- DCCH Dedicated Control CHannel
- BCCH is an RRC layer channel used to transmit MIB or system information.
- CCCH Common Control CHannel
- DCCH Dedicated Control CHannel
- DCCH Dedicated Control CHannel
- the DCCH may be used at least to transmit a dedicated RRC message to the terminal device 1.
- the DCCH may be used, for example, for the RRC-connected terminal device 1.
- Upper layer parameters common to multiple terminal devices 1 are also referred to as common upper layer parameters.
- the common upper layer parameter may be defined as a parameter specific to a serving cell.
- the parameters unique to the serving cell may be common parameters to the terminal devices (for example, terminal devices 1-A, B, and C) in which the serving cell is configured.
- common upper layer parameters may be included in the RRC message delivered to the BCCH.
- common upper layer parameters may be included in RRC messages delivered on the DCCH.
- upper layer parameters that are different from common upper layer parameters are also called dedicated upper layer parameters.
- the dedicated upper layer parameters can provide dedicated RRC parameters to the terminal device 1-A in which the serving cell is configured.
- the dedicated RRC parameters are upper layer parameters that can provide unique settings to each of the terminal devices 1-A, B, and C.
- the logical channel BCCH is mapped to the transport layer BCH or DL-SCH.
- a transport block containing MIB information is delivered to the BCH of the transport layer.
- transport blocks containing system information other than MIB are delivered to the DL-SCH of the transport layer.
- CCCH is mapped to DL-SCH or UL-SCH. That is, a transport block mapped to CCCH is delivered to DL-SCH or UL-SCH.
- DCCH is mapped to DL-SCH or UL-SCH. That is, a transport block mapped to DCCH is delivered to DL-SCH or UL-SCH.
- the RRC message includes one or more parameters managed at the RRC layer.
- the parameters managed in the RRC layer are also called RRC parameters.
- an RRC message may include a MIB.
- the RRC message may also include system information.
- the RRC message may include a message corresponding to CCCH.
- the RRC message may include a message corresponding to DCCH.
- RRC messages including messages corresponding to DCCH are also called individual RRC messages.
- Upper layer parameters are RRC parameters or parameters included in MAC CE (Medium Access Control Element). That is, the upper layer parameter is a general term for MIB, system information, messages corresponding to CCCH, messages corresponding to DCCH, and parameters included in MAC CE. Parameters included in MAC CE are sent by a MAC CE (Control Element) command.
- the procedure performed by the terminal device 1 includes at least some or all of the following 5A to 5C.
- Cell search is a procedure used by the terminal device 1 to synchronize with a certain cell in the time domain and frequency domain and to detect a physical cell ID (physical cell identity). That is, the terminal device 1 may perform time domain and frequency domain synchronization with a certain cell by cell search and detect the physical cell ID.
- the PSS sequence is given based on at least the physical cell ID.
- the SSS sequence is given based on at least the physical cell ID.
- An SS/PBCH block candidate indicates a resource on which transmission of an SS/PBCH block is permitted (possible, reserved, configured, defined, possible).
- a set of SS/PBCH block candidates in a certain half radio frame is also called an SS burst set.
- the SS burst set is also referred to as a transmission window, an SS transmission window, or a DRS transmission window.
- the SS burst set is a general term that includes at least the first SS burst set and the second SS burst set.
- the base station device 3 transmits SS/PBCH blocks of one or more indexes at a predetermined period.
- the terminal device 1 may detect at least one of the SS/PBCH blocks of the one or more indexes and attempt to decode the PBCH included in the SS/PBCH block.
- Random access is a procedure that includes at least some or all of Message 1, Message 2, Message 3, and Message 4.
- Message 1 is a procedure in which PRACH is transmitted by terminal device 1.
- the terminal device 1 transmits a PRACH in one PRACH opportunity selected from one or more PRACH opportunities based at least on the index of the SS/PBCH block candidate detected based on the cell search.
- Each PRACH opportunity is defined based on at least time domain and frequency domain resources.
- the terminal device 1 transmits one random access preamble selected from the PRACH opportunities corresponding to the index of the SS/PBCH block candidate in which the SS/PBCH block is detected.
- Message 2 is a procedure in which the terminal device 1 attempts to detect DCI format 1_0 with a CRC (Cyclic Redundancy Check) scrambled with RA-RNTI (Random Access - Radio Network Temporary Identifier).
- the terminal device 1 includes the DCI format in the control resource set given based on the MIB included in the PBCH included in the SS/PBCH block detected based on the cell search, and in the resource indicated based on the setting of the search area set. Attempt to detect PDCCH.
- Message 2 is also called a random access response.
- Message 3 is a procedure for transmitting a PUSCH scheduled by a random access response grant included in DCI format 1_0 detected by message 2 procedure.
- the random access response grant is indicated by the MAC CE included in the PDSCH scheduled by the DCI format 1_0.
- the PUSCH scheduled based on the random access response grant is either message 3 PUSCH or PUSCH.
- Message 3 PUSCH includes contention resolution identifier MAC CE.
- the conflict resolution ID MAC CE includes the conflict resolution ID.
- Message 3 PUSCH retransmission is scheduled by DCI format 0_0 with scrambled CRC based on TC-RNTI (Temporary Cell - Radio Network Temporary Identifier).
- TC-RNTI Temporary Cell - Radio Network Temporary Identifier
- Message 4 is a procedure that attempts to detect DCI format 1_0 with scrambled CRC based on either C-RNTI (Cell-Radio Network Temporary Identifier) or TC-RNTI.
- the terminal device 1 receives the PDSCH scheduled based on the DCI format 1_0.
- the PDSCH may include a conflict resolution ID.
- Data communication is a general term for downlink communication and uplink communication.
- the terminal device 1 attempts to detect a PDCCH (monitors a PDCCH) in a resource specified based on a control resource set and a search area set.
- a PDCCH monitoring a PDCCH
- a control resource set is a resource set made up of a predetermined number of resource blocks and a predetermined number of OFDM symbols.
- the control resource set may be composed of continuous resources (non-interleaved mapping) or distributed resources (interleaver mapping).
- the set of resource blocks that constitute the control resource set may be indicated by upper layer parameters.
- the number of OFDM symbols constituting the control resource set may be indicated by an upper layer parameter.
- the terminal device 1 attempts to detect PDCCH in the search area set.
- attempting to detect a PDCCH in the search area set may be attempting to detect a PDCCH candidate in the search area set, or may be attempting to detect a DCI format in the search area set.
- the method may be to try to detect a PDCCH in the control resource set, to try to detect a PDCCH candidate in the control resource set, or to try to detect a DCI format in the control resource set. There may be.
- the search area set is defined as a set of PDCCH candidates.
- the search area set may be a CSS (Common Search Space) set or a USS (UE-specific Search Space) set.
- the terminal device 1 has a type 0 PDCCH common search space set (Type0 PDCCH common search space set), a type 0a PDCCH common search space set (Type0a PDCCH common search space set), a type 1 PDCCH common search space set (Type1 PDCCH common search space set), One of the Type 2 PDCCH common search space set, Type 3 PDCCH common search space set, and/or UE-specific PDCCH search space set. Attempts are made to detect PDCCH candidates in some or all parts.
- the type 0 PDCCH common search area set may be used as the index 0 common search area set.
- the type 0 PDCCH common search area set may be an index 0 common search area set.
- CSS set is a general term for type 0 PDCCH common search area set, type 0a PDCCH common search area set, type 1 PDCCH common search area set, type 2 PDCCH common search area set, and type 3 PDCCH common search area set.
- the USS set is also referred to as a UE individual PDCCH search area set.
- a certain search area set is related to (includes in, corresponds to) a certain control resource set.
- the index of the control resource set associated with the search area set may be indicated by the upper layer parameter.
- 6A to 6C may be indicated by at least upper layer parameters.
- a monitoring occasion for a certain search area set may correspond to an OFDM symbol in which a first OFDM symbol of a control resource set related to the certain search area set is placed.
- a monitoring opportunity for a search area set may correspond to resources of the control resource set associated with the search area set starting from the first OFDM symbol of the control resource set. The opportunity to monitor the search area set is given based on at least some or all of the PDCCH monitoring interval, the PDCCH monitoring pattern within the slot, and the PDCCH monitoring offset.
- FIG. 8 is a diagram illustrating an example of a search area set monitoring opportunity according to an aspect of the present embodiment.
- a search area set 91 and a search area set 92 are set in the primary cell 301
- a search area set 93 is set in the secondary cell 302
- a search area set 94 is set in the secondary cell 303.
- the monochrome blocks in the primary cell 301 indicate the search area set 91
- the monochrome blocks in the primary cell 301 indicate the search area set 92
- the blocks in the secondary cell 302 indicate the search area set 93
- the blocks in the secondary cell 301 indicate the search area set 93.
- the blocks in cell 303 indicate search area set 94.
- the monitoring interval of the search area set 91 is set to 1 slot
- the monitoring offset of the search area set 91 is set to 0 slot
- the monitoring pattern of the search area set 91 is [1, 0, 0, 0, 0, 0, 0,1,0,0,0,0,0,0]. That is, the monitoring opportunities of the search area set 91 correspond to the first OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each slot.
- the monitoring interval of the search area set 92 is set to 2 slots, the monitoring offset of the search area set 92 is set to 0 slots, and the monitoring pattern of the search area set 92 is [1, 0, 0, 0, 0, 0, 0,0,0,0,0,0,0,0].
- the monitoring opportunity of the search area set 92 corresponds to the first OFDM symbol (OFDM symbol #0) in each even slot.
- the monitoring interval of the search area set 93 is set to 2 slots
- the monitoring offset of the search area set 93 is set to 0 slots
- the monitoring pattern of the search area set 93 is [0,0,0,0,0,0, 0,1,0,0,0,0,0,0]. That is, the monitoring opportunity of the search area set 93 corresponds to the 8th OFDM symbol (OFDM symbol #7) in each of the even slots.
- the monitoring interval of the search area set 94 is set to 2 slots, the monitoring offset of the search area set 94 is set to 1 slot, and the monitoring pattern of the search area set 94 is [1, 0, 0, 0, 0, 0, 0,0,0,0,0,0,0,0]. That is, the monitoring opportunity of the search area set 94 corresponds to the first OFDM symbol (OFDM symbol #0) in each odd slot.
- the type 0 PDCCH common search area set may be used at least for the DCI format with a CRC (Cyclic Redundancy Check) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier).
- CRC Cyclic Redundancy Check
- the type 0a PDCCH common search area set may be used at least for the DCI format with a CRC (Cyclic Redundancy Check) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier).
- CRC Cyclic Redundancy Check
- the type 1 PDCCH common search area set includes a CRC sequence scrambled by RA-RNTI (Random Access-Radio Network Temporary Identifier) and/or a CRC sequence scrambled by TC-RNTI (Temporary Cell-Radio Network Temporary Identifier). It may be used at least for the accompanying DCI format.
- RA-RNTI Random Access-Radio Network Temporary Identifier
- TC-RNTI Temporary Cell-Radio Network Temporary Identifier
- Type 2 PDCCH common search area set may be used for DCI format with CRC sequence scrambled by P-RNTI (Paging- Radio Network Temporary Identifier).
- P-RNTI Paging- Radio Network Temporary Identifier
- Type 3 PDCCH common search area set may be used for DCI format with CRC sequence scrambled by C-RNTI (Cell-Radio Network Temporary Identifier).
- C-RNTI Cell-Radio Network Temporary Identifier
- the UE specific PDCCH search region set may be used at least for the DCI format with a CRC sequence scrambled by C-RNTI.
- the terminal device 1 detects the downlink DCI format.
- the detected downlink DCI format is used at least for PDSCH resource allocation.
- the detected downlink DCI format is also referred to as downlink assignment.
- the terminal device 1 attempts to receive the PDSCH. Based on the PUCCH resource indicated based on the detected downlink DCI format, the HARQ-ACK corresponding to the PDSCH (HARQ-ACK corresponding to the transport block included in the PDSCH) is reported to the base station device 3.
- the terminal device 1 In uplink communication, the terminal device 1 detects the uplink DCI format.
- the detected DCI format is used at least for PUSCH resource allocation.
- the detected uplink DCI format is also called an uplink grant.
- the terminal device 1 transmits the PUSCH.
- an uplink grant for scheduling a PUSCH is configured for each transmission cycle of the PUSCH.
- a PUSCH is scheduled using an uplink DCI format
- part or all of the information indicated by the uplink DCI format may be indicated by an uplink grant that is set when the scheduling is set.
- the UL slot may be a slot composed of UL symbols.
- the special slot may be a slot composed of UL symbols, flexible symbols, and DL symbols.
- the DL slot may be a slot composed of DL symbols.
- the UL symbol may be an OFDM symbol configured or instructed for uplink in time division duplexing.
- the UL symbol may be an OFDM symbol configured or directed for PUSCH, PUCCH, PRACH, or SRS.
- the UL symbol may be provided by the upper layer parameter tdd-UL-DL-ConfigurationCommon.
- the UL symbol may be provided by the upper layer parameter tdd-UL-DL-ConfigurationDedicated.
- the UL slot may be provided by the upper layer parameter tdd-UL-DL-ConfigurationCommon.
- the UL slot may be provided by the upper layer parameter tdd-UL-DL-ConfigurationDedicated.
- the DL symbol may be an OFDM symbol set or instructed for downlink in time division duplexing.
- the DL symbol may be an OFDM symbol configured or directed for PDSCH or PDCCH.
- the DL symbol may be provided by the upper layer parameter tdd-UL-DL-ConfigurationCommon.
- the DL symbol may be provided by the upper layer parameter tdd-UL-DL-ConfigurationDedicated.
- the DL slot may be provided by the upper layer parameter tdd-UL-DL-ConfigurationCommon.
- the DL slot may be provided by the upper layer parameter tdd-UL-DL-ConfigurationDedicated.
- the flexible symbol may be an OFDM symbol that is not set or designated as a UL symbol or DL symbol among OFDM symbols within a certain period.
- the certain period may be a period given by the upper layer parameter dl-UL-TransmissionPeriodicity.
- the flexible symbol may be an OFDM symbol configured or directed for PDSCH, PDCCH, PUSCH, PUCCH, or PRACH.
- the upper layer parameter tdd-UL-DL-ConfigurationCommon may be a parameter that sets either a UL slot, DL slot, or special slot for each of one or more slots.
- the upper layer parameter tdd-UL-DL-ConfigurationDedicated may be a parameter that sets either the UL symbol, DL symbol, or flexible symbol for the flexible symbol in each of the one or more slots.
- tdd-UL-DL-ConfigurationCommon may be a common upper layer parameter.
- tdd-UL-DL-ConfigurationDedicated may be a dedicated upper layer parameter.
- PUSCH-Config may be a dedicated upper layer parameter.
- PUSCH-ConfigCommon may be a common upper layer parameter.
- PUSCH-Config may be configured for each BWP for PUSCH transmission.
- PUSCH-Config may include multiple upper layer parameters related to PUSCH transmission.
- PUSCH-Config may be a UE-specific setting. For example, the PUSCH-Config for the terminal device 1A, the terminal device 1B, and the terminal device 1C in one cell, or a plurality of upper layer parameters included in the PUSCH-Config may be different.
- PUSCH-ConfigCommon may be configured for each BWP for PUSCH transmission.
- PUSCH-ConfigCommon may include multiple upper layer parameters related to PUSCH transmission.
- PUSCH-ConfigCommon may be a cell-specific setting.
- the PUSCH-ConfigCommon for the terminal device 1A, terminal device 1B, and terminal device 1C in one cell may be common.
- PUSCH-ConfigCommon may be provided by system information.
- the terminal device 1 may decode the PDSCH. For example, the terminal device 1 may decode the corresponding PDSCH in response to the detection of the PDCCH.
- the terminal device 1 may assume that the base station device 3 performs transmission on the PDSCH. Transmission by the base station device 3 on the PDSCH may be performed in a maximum of eight transmission layers at antenna ports 1000 to 1011. Transmission by the base station device 3 on PDSCH may be performed at antenna ports 1000 to 1023. Transmission by the base station device 3 on the PDSCH may be performed in a maximum of eight transmission layers at antenna ports 1000 to 1023.
- the PDSCH may be scheduled by PDCCH.
- the DMRS reception procedure for the first PDSCH scheduled by the PDCCH with DCI format 1_1 may be applied to the second PDSCH.
- the second PDSCH may be a PDSCH scheduled by PDCCH with DCI format 1_2.
- the second PDSCH may be a PDSCH scheduled by PDCCH with DCI format 4_2.
- the terminal device 1 may assume that there is no PDSCH in the OFDM symbol that transmits DMRS.
- the terminal device 1 may assume that there are no PDSCHs other than the first PDSCH in the OFDM symbol that transmits DMRS.
- the first PDSCH may be a PDSCH with an allocation period of 2 OFDM symbols.
- the terminal device 1 may assume that a single symbol front-loaded DMRS of setting type 1 is transmitted at the DMRS port 1000.
- the terminal device 1 may assume that the remaining antenna ports other than the DMRS port 1000 are not related to PDSCH transmission to other terminal devices.
- the terminal device 1 may assume, as assumption 5, that the upper layer parameter dmrs-AdditionalPosition is 'pos2' and that a maximum of two additional single symbol DMRSs exist in one slot.
- the terminal device 1 may assume assumption 5 for mapping type A and mapping type B PDSCHs.
- the terminal device 1 may assume, as Assumption 6, that the PDSCH exists in a symbol that transmits DMRS.
- the terminal device 1 may assume assumption 6 for the PDSCH which is mapping type B and has an allocation period of 2 OFDM symbols.
- the PDSCH may be scheduled according to DCI format. If the PDSCH is scheduled according to a first DCI format or if the PDSCH is received before a Dedicated higher layer configuration of one or more higher layer parameters, the terminal device 1 Some or all of Assumption 1, Assumption 2, Assumption 3, Assumption 4, Assumption 5, and Assumption 6 may be assumed.
- the first DCI format may be DCI format 1_0, DCI format 4_0, or DCI format 4_1.
- the one or more upper layer parameters may be part or all of the upper layer parameter dmrs-AdditionalPosition, the upper layer parameter maxLength, and the upper layer parameter dmrs-Type.
- the terminal device 1 may set the upper layer parameter dmrs-Type, and the set DMRS configuration type (configuration type) is for the received PDSCH. may be used. If the PDSCH is scheduled according to the second DCI format, the maximum number of forward DMRS symbols for the PDSCH may be set by the upper layer parameter maxLength given by the upper layer parameter DMRS-DownlinkConfig. The upper layer parameter maxLength may be set to 'len1' or 'len2'. DMRS may be scheduled by DCI (DCI format).
- DCI DCI format
- single symbol DMRS (single symbol forward DMRS) may be scheduled for the terminal device 1 by DCI (DCI format).
- DCI DCI format
- the terminal device 1 determines whether the PDSCH Additional DMRS may be configured for this purpose. If the upper layer parameter maxLength is set to 'len2', single symbol DMRS and double symbol DMRS (double symbol forward DMRS) may be scheduled for terminal device 1 by the DCI.
- the second DCI format may be C-RNTI, MCS-C-RNTI, or DCI format 1_1 with PDCCH with CRC scrambled by CS-RNTI.
- the second DCI format may be G-RNTI or DCI format 4_2 with PDCCH with CRC scrambled by G-CS-RNTI.
- the reference signal may be a generic term for DMRS, PTRS, and CSI-RS.
- the terminal device 1 may be configured with one or two scrambling identities by an upper layer.
- the scrambling ID may be the same for both PDSCH mapping type A and PDSCH mapping type B.
- the terminal device 1 may be scheduled on several DMRS ports.
- the terminal device 1 may be scheduled on several DMRS ports according to the antenna port index (antenna port number) in DCI format 1_1.
- terminal device 1 uses one or more antenna ports for PDSCH transmission to other terminal devices. may be assumed to be unrelated.
- terminal device 1 is scheduled with one codeword, and terminal device 1 has an index of ⁇ 2, 9, 10, 11, 30 ⁇ (value of antenna port field). It may be assigned by the antenna port mapped to the antenna port.
- terminal device 1 is scheduled with one codeword, and terminal device 1 is mapped to any index (value of antenna port field) of ⁇ 2, 9, 10, 11, 12 ⁇ . It may also be assigned by an antenna port.
- the terminal device 1 may be scheduled with two codes. The one or more antenna ports may be the remaining orthogonal antenna ports.
- terminal device 1 when terminal device 1 is scheduled with one codeword and no DMRS extension is applied, terminal device 1 is scheduled with index ⁇ 2, 9, 10, 11, 30 ⁇ (value of antenna port field). ) may be assigned by the antenna port mapped to the antenna port.
- terminal device 1 when terminal device 1 is scheduled with one codeword, and when DMRS extension is applied and the upper layer parameter maxLength is 1, terminal device 1 is scheduled with ⁇ 2, 9, 10, 11 , 18, 19, 20 ⁇ (the value of the antenna port field).
- the first case may be determined based on whether DMRS extensions are applied.
- the first case may be determined based on whether DMRS extension is applied and the upper layer parameter maxLength.
- Applying the DMRS extension may mean setting the upper layer parameter ExtendedDMRSports. Applying DMRS extensions may mean that the upper layer parameter ExtendedDMRSports is set to valid. If the terminal device 1 reports a certain capability, the DMRS extension may be applied. If the terminal device 1 does not report the certain capability, the DMRS extension may not be applied. If the terminal device 1 does not report the certain capability, the terminal device 1 may not expect the DMRS extension to be applied. For example, the certain capability may be reported for one or both of the uplink and downlink. For example, the upper layer parameter ExtendedDMRSports may be set for one or both of the uplink and downlink. For example, the upper layer parameter ExtendedDMRSports may be set in the upper layer parameter DMRS-DownlinkConfig or may be set in the upper layer parameter DMRS-UplinkConfig.
- Whether DMRS demodulation assistance is applied may be indicated by the DCI format. For example, whether DMRS demodulation assistance is applied may be indicated by one or both of DCI format 1_1 and DCI format 1_2. For example, whether DMRS demodulation assistance is applied may be indicated by one or both of DCI format 0_1 and DCI format 0_2.
- terminal device 1 uses one or more antenna ports for PDSCH transmission to other terminal devices. may be assumed to be unrelated.
- terminal device 1 is scheduled with one codeword, and terminal device 1 is an antenna port mapped to any index (DMRS port, DMRS port index) of ⁇ 2, 10, 23 ⁇ . It may be assigned by
- terminal device 1 is scheduled with one codeword, and terminal device 1 is mapped to any index (DMRS port, DMRS port index) of ⁇ 2, 10, 23, 58 ⁇ . It may also be assigned at the antenna port.
- the terminal device 1 receiving the PDSCH scheduled according to the first DCI format When the terminal device 1 receiving the PDSCH scheduled according to the first DCI format is configured with the first upper layer parameter, the terminal device 1 receives the first configuration and the second configuration. For PDSCH, non-simultaneous occurrence may be assumed.
- the first DCI format may be DCI format 1_2.
- the first DCI format may be DCI format 1_0 or DCI format 1_1.
- the first upper layer parameter may be the upper layer parameter phaseTrackingRS in the upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeA-DCI-1-2.
- the first upper layer parameter may be the upper layer parameter phaseTrackingRS in the upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeB-DCI-1-2.
- the first upper layer parameter may be the upper layer parameter phaseTrackingRS in the upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeA.
- the first upper layer parameter may be the upper layer parameter phaseTrackingRS in the upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeB.
- the first configuration may be that one or more DMRS ports are scheduled for the terminal device 1 and that other terminal devices share the DMRS resource elements in the same CDM group.
- the one or more DMRS ports may be one or more of the DMRS ports 1004-1007.
- the one or more DMRS ports may be one or more DMRS ports from 1006 to 1011. In DMRS configuration type 1, the one or more DMRS ports may be one or more of DMRS ports 1004 to 1007.
- the one or more DMRS ports may be one or more of DMRS ports 1006 to 1011.
- the one or more DMRS ports may be one or more of DMRS port 1004 to DMRS port 1007 and DMRS port 1012 to DMRS port 1015.
- the one or more DMRS ports may be one or more of DMRS port 1006 to DMRS port 1011 and DMRS port 1018 to DMRS port 1023. If DMRS configuration type 1 is configured and DMRS extension is applied, one or more DMRS ports are DMRS port 1004 to DMRS port 1007 and DMRS port 1012 to DMRS port 1015. There may be multiple DMRS ports.
- DMRS configuration type 2 is configured and DMRS extension is applied, one or more DMRS ports are DMRS port 1006 to DMRS port 1011 and DMRS port 1018 to DMRS port 1023. There may be multiple DMRS ports.
- the second setting may be that the PTRS is sent to the terminal device 1.
- Applying the DMRS extension may mean setting the upper layer parameter ExtendedDMRSports. Applying DMRS extensions may mean that the upper layer parameter ExtendedDMRSports is set to valid.
- the terminal device 1 does not need to expect that a double symbol forward DMRS (double symbol forward DMRS symbol) and two or more additional DMRS (additional DMRS symbols) are set at the same time.
- Configuring double-symbol forward DMRS may mean that the maximum number of forward DMRS symbols for the PDSCH is configured by the upper layer parameter maxLength, where 'len2' is set. Additional DMRS may be given by the upper layer parameter dmrs-AdditionalPosition.
- the terminal device 1 does not have to expect to assume a different DMRS configuration than co-scheduled terminal devices (co-scheduled UE(s)).
- the DMRS configuration may be a DMRS configuration related to an actual number of forward DMRS symbols, an actual number of additional DMRS, a DMRS symbol position, and a DMRS configuration type.
- terminal device 1 determines that the indicated CDM group includes a potential co-scheduled downlink terminal device (co-scheduled terminal device, co-scheduled downlink terminal device), and , it may be assumed that the indicated CDM group is not used for data transmission.
- “1”, “2”, and “3” for the number of DMRS-CDM groups (CDM groups) are CDM group 0, CDM group ⁇ 0, 1 ⁇ , and CDM group ⁇ 0,1,2 ⁇ may correspond to each.
- the terminal device 1 may assume that the number of DMRS-CDM groups (CDM groups) without data is one. For example, when a PDSCH scheduled according to DCI format 1_0, 4_0, or 4_1 is received, the terminal device 1 may assume that the number of first CDM groups without data is one.
- the first CDM group may correspond to CDM group 0 for a PDSCH with an allocation period of 2 OFDM symbols.
- the terminal device 1 may assume that the number of DMRS-CDM groups without data is two.
- the terminal device 1 may assume that the number of second CDM groups without data is two.
- the second CDM group may correspond to CDM group ⁇ 0, 1 ⁇ for a PDSCH other than a PDSCH with an allocation period of 2 OFDM symbols.
- the terminal device 1 does not have to expect to receive the first PDSCH.
- the first PDSCH may be scheduled with a DCI pointing to a CDM group with DMRS ports that overlap with configured CSI-RS resources.
- the terminal device 1 may receive DMRS for PDSCH.
- terminal device 1 determines whether the DMRS and SS/PBCH blocks are QCL (or Type D QCL). ) may be assumed.
- the terminal device 1 may not expect to receive DMRS in one or more second resource elements that overlap with one or more first resource elements of the SS/PBCH block.
- Terminal device 1 may expect different or the same subcarrier intervals to be set for SS/PBCH block and DMRS in one component carrier. For example, if the first subcarrier spacing of the SS/PBCH block is 240 kHz, terminal equipment 1 may expect the second subcarrier spacing for DMRS to be different from the first subcarrier spacing. good.
- terminal equipment 1 receives a DMRS and an SS/PBCH block for PDSCH in the same OFDM symbol, terminal equipment 1 It may be assumed that at least one DMRS port and the SS/PBCH block are QCL (or Type D QCL).
- terminal device 1 is configured by the upper layer parameter PDCCH-Config, and if terminal device 1 receives DMRS and SS/PBCH blocks for PDSCH in the same OFDM symbol, terminal device 1 It may be assumed that at least one DMRS port and SS/PBCH block of is a QCL (or is a Type D QCL).
- the upper layer parameter PDCCH-Config may include two different values of the upper layer parameter coresetPoolIndex in the upper layer parameter ControlResourceSet.
- the terminal device 1 When the terminal device 1 is configured with the upper layer parameter PDCCH-Config that includes two different values of the upper layer parameter coresetPoolIndex, the terminal device 1 performs scheduling using multiple PDSCHs that overlap in the time domain and the frequency domain. may be done. In this case, the terminal device 1 need not expect to assume different DMRS settings. Furthermore, in this case, the terminal device 1 does not have to expect to assume a DMRS port in one CDM group indicated by two TCI (Transmission Configuration Indication) states.
- the DMRS configuration may be a DMRS configuration with respect to some or all of the actual number of forward DMRS symbols, the actual number of additional DMRS symbols, the actual DMRS symbol position, and the DMRS configuration type.
- terminal device 1 If terminal device 1 is indicated by a DCI that includes a time domain resource allocation field that indicates an entry containing the upper layer parameter repetitionNumber in the upper layer parameter PDSCH-TimeDomainResourceAllocation, the terminal device 1 may not be configured in the upper layer parameter sfnSchemePdsch. .
- two TCI states in the code points of the TCI field may be indicated, and DMRS ports in two CDM groups in the antenna port field may be indicated.
- the first TCI state may correspond to a first CDM group of the first antenna port
- the second TCI state may correspond to a second CDM group.
- the first antenna port may be indicated by an antenna port indication table.
- DCI DCI format
- TCI field Transmission Configuration Indication field
- DCI (DCI format) may be configured to include an antenna port field.
- the procedure for PTRS reception may be applied to the terminal device 1 that receives the PDSCH scheduled according to the first DCI format.
- the first DCI format is the DCI when the upper layer parameter phaseTrackingRS is set in the upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeA-DCI-1-2 or in the upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeB-DCI-1-2. Format 1_2 may be used.
- the first DCI format is DCI format 1_0 or DCI format 1_1 when the upper layer parameter phaseTrackingRS is set in the upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeA or upper layer parameter dmrs-DownlinkForPDSCH-MappingTypeB. good.
- the terminal device 1 may report the MCS and bandwidth threshold.
- MCS and bandwidth thresholds may be reported based on UE capability at a particular carrier frequency.
- the MCS and bandwidth thresholds may be reported assuming an MCS table with the highest modulation order at each subcarrier frequency applied to a data channel at a particular carrier frequency.
- the MCS may be used to indicate at least part or all of the modulation scheme and target coding rate.
- the upper layer parameter timeDensity and the upper layer parameter frequencyDensity may respectively indicate three MCS threshold values and two RB threshold values.
- the terminal device 1 may assume the existence of a PTRS antenna port (PTRS port) and the pattern is the first may be assumed to be a function of the MCS and the first bandwidth.
- PTRS port PTRS antenna port
- the RNTI is MCS-C-RNTI, C-RNTI, or CS-RNTI
- the terminal device 1 the presence and pattern of PTRS antenna ports (PTRS ports) may be a function of the first MCS and the first bandwidth.
- the first MCS may be the MCS of the corresponding codeword.
- the first bandwidth may be a bandwidth in a corresponding BWP (bandwidth part).
- LPTRS may be the number of OFDM symbols between two OFDM symbols to which the PTRS is mapped. For example, PTRS may be present in one OFDM symbol of the L PTRS OFDM symbols.
- KPTRS may be the number of PRBs between two PRBs to which PTRSs are mapped. For example, a PTRS may exist in one PRB among the PRBs of K PTRS .
- the terminal device 1 may assume that L PTRS is 1 and K PTRS is 2. As behavior 3, if both the additional upper layer parameter timeDensity and the upper layer parameter frequencyDensity are not set, and RNTI is MCS-C-RNTI, C-RNTI, or CS-RNTI, and condition 1 is If not satisfied, the terminal device 1 may assume that L PTRS is 1 and K PTRS is 2, and that PTRS exists.
- condition 1 may be that the value of MCS is less than 10.
- Condition 1 may be that the value of MCS is less than 5.
- Condition 1 may be that the value of MCS is less than 15.
- Condition 1 may be that the value of MCS is less than 3.
- Condition 1 may be that the number of PRBs (RBs) is less than three.
- the terminal device 1 may assume that PTRS does not exist.
- the first MCS threshold, the second MCS threshold, and the third MCS threshold may be determined by upper layer parameters. If the value of MCS is less than the first MCS threshold, PTRS may not be present. L PTRS may be 4 if the value of MCS is greater than or equal to the first MCS threshold and less than the second MCS threshold. L PTRS may be 2 if the value of MCS is greater than or equal to the second MCS threshold and less than the third MCS threshold. L PTRS may be 1 if the value of MCS is greater than or equal to at least a third MCS threshold. If the first MCS table is used, the upper layer parameters may provide a first MCS threshold, a second MCS threshold, and a third MCS threshold in the range 0 to 29.
- the upper layer parameters may provide a first MCS threshold, a second MCS threshold, and a third MCS threshold in the range 0 to 28. If a third MCS table is used, the upper layer parameters may provide a first MCS threshold, a second MCS threshold, and a third MCS threshold in the range 0 to 27. The value of MCS may not exceed a fourth MCS threshold. The fourth MCS threshold may be 29 when the first MCS table is used, 28 when the second MCS table is used, and 27 when the third MCS table is used. .
- the first RB threshold and the second RB threshold may be determined by upper layer parameters. If the number of RBs is less than the first RB threshold, PTRS may not be present. KPTRS may be 2 if the number of RBs is greater than or equal to the first RB threshold and less than the second RB threshold. KPTRS may be 4 if the number of RBs is at least equal to or greater than the second RB threshold.
- the upper layer parameters may provide a first RB threshold and a second RB threshold in a range of 1 to 276.
- the terminal device 1 may assume that PTRS does not exist.
- One or both of the PTRS time density (L PTRS ) and PTRS frequency density (K PTRS ) may indicate that PTRS is not present.
- L PTRS is 2 or 4 and a PDSCH with an allocation period of 2 OFDM symbols is received, it may be assumed that no PTRS is transmitted. If L PTRS is 4 and a PDSCH with an allocation period of 4 OFDM symbols is received, it may be assumed that no PTRS is transmitted.
- the value of MCS for time density determination of PTRS may be obtained from DCI. For example, if terminal device 1 is scheduled with an MCS index (value of MCS) that is larger than the first value, and a PDSCH for retransmission is received, for determining the time density of PTRS (L PTRS )
- the MCS value of may be obtained from the DCI received for the same transport in the initial transmission.
- the first value may be 28 when the first MCS table is used, 27 when the second MCS table is used, and 26 when the third MCS table is used.
- One or more DMRS ports may be associated with one PTRS port.
- One or more DMRS ports associated with one PTRS port may be assumed to be QCLs (or QCLs of type A and type D).
- the PTRS antenna port (PTRS port, antenna port for PTRS, antenna port related to PTRS) is one or more DMRS antennas allocated for PDSCH.
- the port (DMRS port, antenna port for DMRS) may be associated with one DMRS antenna port.
- One DMRS antenna port may be the lowest indexed DMRS antenna port.
- the DMRS port may be a downlink DMRS port.
- the PTRS port may be a PTRS antenna port.
- the PTRS port may be an antenna port for PTRS.
- the DMRS port may be a DMRS antenna port.
- the DMRS port may be an antenna port for DMRS.
- the PTRS antenna port may be associated with one DMRS antenna port.
- One DMRS antenna port may be the lowest indexed DMRS antenna port of the one or more DMRS antenna ports assigned for the codeword with the highest MCS. If two codewords have the same MCS (MCS index), one DMRS antenna port is the lowest indexed DMRS antenna port of the one or more DMRS antenna ports assigned for codeword 0. It may be.
- DCI format 1_0, DCI format 1_1, and DCI format 1_2 may be DCI formats for PDSCH scheduling.
- DCI format 1_0 may be used for PDSCH scheduling in one downlink cell.
- the antenna port(s) field may be included in DCI format 1_1 and DCI format 1_2.
- the number of information bits that make up the antenna port field may be 4, 5, or 6 bits. Further, the number of information bits constituting the antenna port field may be 4, 5, 6, or 7 bits. Furthermore, the number of information bits constituting the antenna port field may be 4, 5, 6, 7, or 8 bits.
- the number of CDM groups without data may be one of value 1, value 2, and value 3.
- the number of CDM groups with no data of value 1 may refer to CDM group 0.
- the number of CDM groups with no data of value 2 may refer to CDM groups ⁇ 0, 1 ⁇ .
- the number of CDM groups with no data of value 3 may refer to CDM groups ⁇ 0, 1, 2 ⁇ .
- the fact that the upper layer parameter dmrs-Type is 1 may mean that DMRS configuration type 1 is set.
- the fact that the upper layer parameter dmrs-Type is 2 may mean that DMRS configuration type 2 is configured.
- the upper layer parameter maxLength being 1 may mean that the maximum number of forward DMRS symbols is 1 symbol.
- the upper layer parameter maxLength being 2 may mean that the maximum number of forward DMRS symbols is 2 symbols.
- the upper layer parameter maxLength being 1 may mean that a single symbol forward DMRS (forward DMRS symbol) is set.
- the upper layer parameter maxLength being 2 may mean that single-symbol forward DMRS (forward DMRS symbol) or double-symbol forward DMRS is set.
- the number of information bits configuring the antenna port field may be 4.
- the number of information bits configuring the antenna port field may be 4.
- the number of information bits configuring the antenna port field shall be 4. Good too. If the value of the antenna port field, which consists of 4 information bits, is 0, the DMRS port may be 0 and the number of CDM groups without data may be 1.
- the DMRS port may be 1 and the number of CDM groups without data may be 1. If the value of the antenna port field consisting of 4 information bits is 2, the DMRS port may be ⁇ 0,1 ⁇ and the number of CDM groups without data may be 1. If the value of the antenna port field, which consists of 4 information bits, is 3, the DMRS port may be 0 and the number of CDM groups without data may be 2. If the value of the antenna port field, which consists of 4 information bits, is 4, the DMRS port may be 1 and the number of CDM groups without data may be 2.
- the DMRS port may be 2 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 4 information bits is 6, then the DMRS port may be 3 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 4 information bits is 7, the DMRS port may be ⁇ 0,1 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 4 information bits is 8, the DMRS port may be ⁇ 2,3 ⁇ and the number of CDM groups without data may be 2.
- the DMRS ports may be ⁇ 0,1,2 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 4 information bits is 10, then the DMRS ports may be ⁇ 0,1,2,3 ⁇ and the number of CDM groups without data may be 2. good. If the value of the antenna port field consisting of 4 information bits is 11, the DMRS port may be ⁇ 0,2 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field, which consists of 4 information bits, is 12, 13, 14, or 15, the DMRS port may be undefined (reserved) and the number of CDM groups without data is undefined. It may be defined (reserved).
- the number of information bits configuring the antenna port field may be 5.
- the number of information bits configuring the antenna port field is 5. Good too. If the value of the antenna port field consisting of 5 information bits is 0, the DMRS port may be 0 and the number of CDM groups without data may be 1. If the value of the antenna port field consisting of 5 information bits is 1, the DMRS port may be 1 and the number of CDM groups without data may be 1.
- the DMRS port may be ⁇ 0,1 ⁇ and the number of CDM groups without data may be 1. If the value of the antenna port field, which consists of 5 information bits, is 3, the DMRS port may be 0 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 4, the DMRS port may be 1 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 5, the DMRS port may be 2 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 6, the DMRS port may be 3 and the number of CDM groups without data may be 2.
- the DMRS port may be ⁇ 0,1 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 8, the DMRS port may be ⁇ 2,3 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 9, the DMRS ports may be ⁇ 0,1,2 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 10, then the DMRS ports may be ⁇ 0,1,2,3 ⁇ and the number of CDM groups without data may be 2. good.
- the DMRS port may be ⁇ 0,2 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 12, then the DMRS ports may be 8 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 13, the DMRS port may be 9 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 14, then the DMRS port may be 10 and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 15, then the DMRS port may be 11 and the number of CDM groups without data may be 2.
- the DMRS ports may be ⁇ 8,9 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 17, the DMRS ports may be ⁇ 10,11 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 18, then the DMRS ports may be ⁇ 8,9,10 ⁇ and the number of CDM groups without data may be 2. If the value of the antenna port field consisting of 5 information bits is 19, then the DMRS ports may be ⁇ 8,9,10,11 ⁇ and the number of CDM groups without data may be 2. good. If the value of the antenna port field consisting of 5 information bits indicates some or all of the DMRS ports ⁇ 8,9,10,11 ⁇ , the number of CDM groups without data may be 2.
- the antenna port field is The number of constituent information bits may be five.
- the antenna port field consisting of 5 information bits, may indicate some or all of the DMRS ports ⁇ 0,1,2,3,4,5,6,7 ⁇ .
- the antenna port field is The number of constituent information bits may be five.
- the antenna port field consisting of 5 information bits, may indicate some or all of the DMRS ports ⁇ 0,1,2,3,4,5,6,7 ⁇ .
- DMRS configuration type 1 is set, and if the maximum number of forward DMRS symbols is set to be 2, and if the upper layer parameter ExtendedDMRSports is set, the number of information bits that make up the antenna port field. may be 6. If DMRS configuration type 1 is configured, and if the maximum number of forward DMRS symbols is configured to be 2, and if the upper layer parameter ExtendedDMRSports is configured to be enabled, then the antenna port field is The number of constituent information bits may be six.
- the antenna port field which consists of 6 information bits, is one of the DMRS ports ⁇ 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 ⁇ . Part or all may be specified. Number of CDM groups without data if the value of the antenna port field, which consists of 6 information bits, indicates some or all of the DMRS ports ⁇ 8,9,10,11,12,13,14,15 ⁇ may be 2.
- the antenna port (DMRS port) that becomes available by applying DMRS extension may correspond to the number of CDM groups without data being 2.
- the antenna port (DMRS port) that becomes usable by applying DMRS extension does not have to support the number of CDM groups without data being one.
- DMRS configuration type 2 is configured and the maximum number of forward DMRS symbols is configured to be 1, the number of information bits configuring the antenna port field may be 5. If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 1, and the upper layer parameter ExtendedDMRSports is not configured, the number of information bits that make up the antenna port field is It may be 5. If DMRS configuration type 2 is configured, and if the maximum number of forward DMRS symbols is configured to be 1, and if the upper layer parameter ExtendedDMRSports is configured to be disabled, then the antenna port field is The number of constituent information bits may be five. The antenna port field, consisting of 5 information bits, may indicate some or all of the DMRS ports ⁇ 0,1,2,3,4,5 ⁇ .
- the antenna port field is The number of constituent information bits may be six.
- the antenna port field which consists of 6 information bits, may indicate some or all of the DMRS ports ⁇ 0,1,2,3,4,5,12,13,14,15,16,17 ⁇ good.
- the value of the antenna port field which consists of 6 information bits, indicates some or all of the DMRS ports ⁇ 12,13,14,15,16,17 ⁇ , then the number of CDM groups without data is 2, and , 3, or both, and does not need to be 1.
- the number of information bits configuring the antenna port field may be 6. If DMRS configuration type 2 is configured, and the maximum number of forward DMRS symbols is configured to be 2, and the upper layer parameter ExtendedDMRSports is not configured, the number of information bits that make up the antenna port field is It may be 6. If DMRS configuration type 2 is configured, and if the maximum number of forward DMRS symbols is configured to be 2, and if the upper layer parameter ExtendedDMRSports is configured to be disabled, the antenna port field is The number of constituent information bits may be six. The antenna port field, consisting of 6 information bits, may indicate any or all of the DMRS ports ⁇ 0,1,2,3,4,5,6,7,8,9,10,11 ⁇ . good.
- the antenna port field is The number of constituent information bits may be seven.
- the antenna port field which consists of 7 information bits, is the DMRS port ⁇ 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16, 17,18,19,20,21,22,23 ⁇ may be specified in part or in whole.
- the number of CDM groups without data may be one or both of 2 and 3, and may not be 1.
- the antenna port (DMRS port) that becomes available by applying DMRS extension may correspond to the number of CDM groups without data being three.
- the antenna port (DMRS port) that becomes usable by applying DMRS extension does not have to support the number of CDM groups without data being one.
- the antenna port (DMRS port) that becomes usable by applying DMRS extension does not have to support the number of CDM groups without data being two.
- the number of information bits configuring the antenna port field is 6. Good too. If the DMRS configuration type is set to 1 and the maximum number of forward DMRS symbols is set to 1, and the upper layer parameter ExtendedDMRSports is set, the number of information bits that make up the antenna port field. may be 6. A first part of the antenna port field consisting of 6 information bits may be used to indicate a DMRS port, and a second part of the antenna port field consisting of 6 information bits. may be used for DMRS reception assistance.
- DMRS configuration type 1 is set, and if the maximum number of forward DMRS symbols is set to be 2, and if the upper layer parameter ExtendedDMRSports is set, the number of information bits that make up the antenna port field. may be 7. If DMRS configuration type 1 is configured, and if the maximum number of forward DMRS symbols is configured to be 2, and if the upper layer parameter ExtendedDMRSports is configured to be enabled, then the antenna port field is The number of constituent information bits may be seven.
- the antenna port field which consists of 7 information bits, is one of the DMRS ports ⁇ 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 ⁇ . Part or all may be specified.
- Number of CDM groups without data if the value of the antenna port field, which consists of 7 information bits, indicates some or all of the DMRS ports ⁇ 8,9,10,11,12,13,14,15 ⁇ may be 2.
- a first part of the antenna port field consisting of 7 information bits may be used to indicate a DMRS port, and a second part of the antenna port field consisting of 7 information bits. may be used for DMRS reception assistance.
- the antenna port field is The number of constituent information bits may be seven.
- the antenna port field which consists of 7 information bits, may indicate some or all of the DMRS ports ⁇ 0,1,2,3,4,5,12,13,14,15,16,17 ⁇ . good.
- the value of the antenna port field which consists of 7 information bits, indicates some or all of the DMRS ports ⁇ 12,13,14,15,16,17 ⁇ , then the number of CDM groups without data is 2. It's okay.
- a first part of the antenna port field consisting of 7 information bits may be used to indicate a DMRS port, and a second part of the antenna port field consisting of 7 information bits. may be used for DMRS reception assistance.
- the antenna port field is The number of constituent information bits may be eight.
- the antenna port field which consists of 8 information bits, is the DMRS port ⁇ 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16, 17,18,19,20,21,22,23 ⁇ may be specified in part or in whole.
- the number of CDM groups without data may be 2.
- a first part of the antenna port field consisting of 8 information bits may be used to indicate a DMRS port, and a second part of the antenna port field consisting of 7 information bits. may be used for DMRS reception assistance.
- the number of DMRS ports may be the number of layers v.
- the antenna port ⁇ p 0 ,..., p v-1 ⁇ (antenna port value, antenna port number) may be the sum of DMRS port (DMRS port value, DMRS port number) and 1000.
- DMRS for PDSCH may be determined based on a DMRS sequence (DMRS sequence) and mapping to physical resources.
- a DMRS sequence for PDSCH may be generated.
- the DMRS sequence r(n) may be determined based on at least a pseudo-random sequence c(i) (pseudo-random sequence).
- N 1 ID may be given by upper layer parameter ID1.
- ⁇ may be a CDM group. If the upper layer parameter dmrs-Downlink or the upper layer parameter dmrs-Uplink is not provided, n ⁇ SCID may be n SCID . If the upper layer parameter dmrs-Downlink or the upper layer parameter dmrs-Uplink is not provided, ⁇ may be 0. n SCID may be 0 or 1. n SCID may be given by a DMRS sequence initialization field in the DCI. n SCID may be 0 if there is no DMRS sequence initialization field in the DCI.
- the DMRS for PDSCH may be mapped to physical resources according to the DMRS configuration type.
- the DMRS setting type may be DMRS setting type 1 (setting type 1) or DMRS setting type 2 (setting type 2).
- the DMRS sequence r(m) may be mapped to one or more resource elements (k,l) p, ⁇ (or a (p, ⁇ ) (k,l) ).
- the sequence r(m) of the DMRS may be mapped to the set (k,l) p, ⁇ of resource elements.
- the DMRS sequence r(m) may be scaled by the factor ⁇ DMRS PDSCH to match the transmit power.
- One or more resource elements (k,l) p, ⁇ are subcarrier index (subcarrier) k, OFDM symbol index (OFDM symbol) l, antenna port p, and subcarrier spacing setting (subcarrier spacing ) ⁇ .
- the reference point of subcarrier index k may be the subcarrier with index 0 in common resource block 0 with index 0.
- the reference point of subcarrier index k may be the subcarrier of index 0 of the lowest-numbered resource block in CORESET0.
- the reference point of OFDM symbol index l may be determined in PDSCH mapping type A with respect to the start of a slot.
- the reference point of OFDM symbol index l may be determined in PDSCH mapping type B in relation to the start of scheduled PDSCH resources.
- the position l 0 of the first DMRS symbol may be 3.
- the position l 0 of the first DMRS symbol may be 2.
- the position l 0 of the first DMRS symbol may be 0.
- the DMRS sequence r(n) may be mapped to the physical resource a (p, ⁇ ) (k,l) .
- the DMRS sequence r(n) may be mapped to the physical resource a (p, ⁇ ) (k, l) based on Equation 1.
- k' may be ⁇ 0,1 ⁇ .
- k' may be determined based on DMRS reception assistance. For example, if the information bits in the DCI format for DMRS reception assistance do not indicate a specific value, k' may be ⁇ 0,1 ⁇ . Furthermore, when the information bits in the DCI format for DMRS reception assistance indicate a specific value, k' may be ⁇ 0, 1, 2, 3 ⁇ . For example, if the upper layer parameter ExtendedDMRSports is not set, k' may be ⁇ 0,1 ⁇ . If the upper layer parameter ExtendedDMRSports is set, k' may be ⁇ 0,1,2,3 ⁇ .
- k' may be ⁇ 0,1,2,3 ⁇ .
- k' may be ⁇ 0,1 ⁇ .
- Whether DMRS reception assistance is applied may be determined based on the DCI format. Some of the information bits in certain fields of the DCI format may determine whether DMRS reception assistance is applied. The particular field may be an antenna port field.
- k' may be referred to as a frequency domain-Orthogonal cover code index (FD-OCC index).
- FD-OCC index frequency domain-Orthogonal cover code index
- the fact that k' is ⁇ 0,1 ⁇ may also mean that the length of FD-OCC (FD-OCC length) is 2.
- k' is ⁇ 0,1,2,3 ⁇ may mean that the length of the FD-OCC is 4.
- k' may be ⁇ 0,1 ⁇ in DMRS configuration type 2. If k' is ⁇ 0,1,2,3 ⁇ in DMRS configuration type 1, k' may be ⁇ 0,1,2,3 ⁇ in DMRS configuration type 2.
- OFDM symbol index l may be l bar +l'.
- ld may be the period between the first OFDM symbol of the slot and the last OFDM symbol of the scheduled PDSCH resource in the slot.
- ld may be the duration of the scheduled PDSCH resource.
- the DMRS position l bar may be a DMRS position l bar for single symbol DMRS (single symbol forward DMRS).
- the DMRS position l bar may be determined based at least on the period ld.
- the DMRS location l bar may be determined based on at least the period ld, the PDSCH mapping type, and the additional DMRS.
- the period ld is 2 OFDM symbols
- the DMRS position l bar may be l 0 .
- l bar may be l 0 .
- l bar may be l 0 .
- DMRS position l bar may be l 0 .
- DMRS position l bar is ⁇ l 0 , l 1 ⁇ It may be.
- the DMRS position l bar is ⁇ l 0 , 7, 11 ⁇ may be used.
- the DMRS position l bar is ⁇ l 0 , 5, 8 , 11 ⁇ .
- DMRS position l bar may be l 0 .
- DMRS position l bar is ⁇ l 0 , 9 ⁇ There may be.
- DMRS position l bar is ⁇ l 0 , 5, 9 ⁇
- the DMRS position l bar is ⁇ l 0 , 3, 6 , 9 ⁇ .
- Setting a certain value to dmrs-AdditionalPosition may mean that dmrs-AdditionalPosition is equal to a certain value.
- the DMRS position l bar may be a DMRS position l bar for double symbol DMRS (single symbol forward DMRS).
- l bar may be l 0 if the period ld is anywhere from 5 to 7 OFDM symbols.
- l bar may be l 0 .
- l bar is ⁇ l 0 ,10 ⁇ .
- l bar When the period ld is 13 OFDM symbols, when PDSCH mapping type B is set, and when dmrs-AdditionalPosition is set to 'pos0', l bar may be l 0 . If period ld is 13 OFDM symbols, and PDSCH mapping type B is set, and dmrs-AdditionalPosition is set to 'pos1', l bar may be ⁇ l 0 ,8 ⁇ good.
- the case where the upper layer parameter dmrs-AdditionalPosition is equal to 'pos3' may be supported. If the upper layer parameter dmrs-TypeA-Position is equal to 'pos2', l d may be 3 or 4 OFDM symbols.
- l 1 may be 11 or 12. For PDSCH mapping type A and if the conditions are met, l 1 may be 12. For PDSCH mapping type A and if the condition is not met, l 1 may be 11.
- l' may be 0 or ⁇ 0,1 ⁇ .
- l' may be 0.
- l' may be 0.
- l' may be 0.
- l' may be ⁇ 0,1 ⁇ .
- l' may be ⁇ 0,1 ⁇ .
- l' may be ⁇ 0,1 ⁇ .
- l' may be ⁇ 0,1 ⁇ .
- the subcarrier index k may be 4n+2k'+ ⁇ .
- subcarrier index k may be 6n+k'+ ⁇ .
- Antenna port 1000+i may be the same as DMRS port i in cases where at least some or all of ⁇ , w t (l'), w f (k'), and ⁇ are determined.
- i may be an integer from 0 to 7.
- i may be an integer from 0 to 15.
- i may be an integer from 0 to 11.
- i may be an integer from 0 to 23.
- ⁇ may be determined based at least on the antenna port. ⁇ may be determined based on at least the antenna port and the DMRS configuration type. ⁇ may be determined based on at least the antenna port, the DMRS configuration type, and whether DMRS extensions are applied. For example, in the case of DMRS configuration type 1 and the antenna port is one of ⁇ 1000, 1001, 1004, 1005 ⁇ , ⁇ may be 0. For example, in the case of DMRS configuration type 1 and the antenna port is one of ⁇ 1002, 1003, 1006, 1007 ⁇ , ⁇ may be 1. For example, in the case of DMRS configuration type 1 and the antenna port is one of ⁇ 1000, 1001, 1004, 1005, 1008, 1009, 1012, 1013 ⁇ , ⁇ may be 0.
- ⁇ may be 1.
- DMRS configuration type 1 when DMRS extension is not applied, and when the antenna port is one of ⁇ 1000, 1001, 1004, 1005 ⁇ , ⁇ may be 0.
- DMRS configuration type 1 when DMRS extension is not applied, and when the antenna port is one of ⁇ 1002, 1003, 1006, 1007 ⁇ , ⁇ may be 1.
- ⁇ is 0 when DMRS extension is applied, and when the antenna port is one of ⁇ 1000,1001,1004,1005,1008,1009,1012,1013 ⁇ , ⁇ is May be 0.
- ⁇ is 0, when DMRS extension is applied, and when the antenna port is one of ⁇ 1002,1003,1006,1007,1010,1011,1014,1015 ⁇ , ⁇ is It may be 1. If ⁇ is 0, then CDM group ⁇ may be 0. If ⁇ is 1, then the CDM group ⁇ may be 1.
- ⁇ In the case of DMRS configuration type 2, and the antenna port is one of ⁇ 1000, 1001, 1006, 1007 ⁇ , ⁇ may be 0.
- ⁇ In the case of DMRS configuration type 2 and the antenna port is one of ⁇ 1002, 1003, 1008, 1009 ⁇ , ⁇ may be 2.
- ⁇ In the case of DMRS configuration type 2 and the antenna port is one of ⁇ 1004, 1005, 1010, 1011 ⁇ , ⁇ may be 4.
- DMRS configuration type 2 and when the antenna port is one of ⁇ 1000, 1001, 1006, 1007, 1012, 1013, 1018, 1019 ⁇ , ⁇ may be 0.
- ⁇ may be 2.
- DMRS configuration type 2 when the antenna port is one of ⁇ 1002, 1003, 1008, 1009, 1014, 1015, 1020, 1021 ⁇ , ⁇ may be 2.
- the antenna port in the case of DMRS configuration type 2 and the antenna port is one of ⁇ 1004, 1005, 1010, 1011, 1016, 1017, 1022, 1023 ⁇ , ⁇ may be 4.
- DMRS extension is not applied, and the antenna port is one of ⁇ 1000, 1001, 1006, 1007 ⁇ , ⁇ may be 0.
- DMRS configuration type 2 when DMRS extension is not applied, and when the antenna port is one of ⁇ 1002, 1003, 1008, 1009 ⁇ , ⁇ may be 2.
- ⁇ may be 4 if DMRS extension is not applied and the antenna port is one of ⁇ 1004, 1005, 1010, 1011 ⁇ .
- DMRS configuration type 2 and DMRS extension is applied, and the antenna port is one of ⁇ 1000,1001,1006,1007,1012,1013,1018,1019 ⁇ , ⁇ is 0. There may be.
- DMRS configuration type 2 when DMRS extension is applied, and when the antenna port is one of ⁇ 1002,1003,1008,1009,1014,1015,1020,1021 ⁇ , ⁇ is It may be 2.
- ⁇ is It may be 4. If ⁇ is 0, then CDM group ⁇ may be 0. If ⁇ is 2, the CDM group ⁇ may be 1. If ⁇ is 4, the CDM group ⁇ may be 2.
- w t (l') may be determined based on one or both of the antenna port and the DMRS configuration type. w t (l') may be determined based on at least the antenna port, the DMRS configuration type, and whether DMRS extensions are applied.
- w t (0) may be +1.
- w t (1) may be +1.
- DMRS configuration type 1 and the antenna port is one of ⁇ 1004, 1005, 1006, 1007 ⁇ , w t (1) may be -1.
- w t (1) In the case of DMRS configuration type 1 and when the antenna port is one of ⁇ 1008, 1009, 1010, 1011 ⁇ , w t (1) may be +1. In the case of DMRS configuration type 1 and the antenna port is one of ⁇ 1012, 1013, 1014, 1015 ⁇ , w t (1) may be ⁇ 1.
- DMRS configuration type 1 when DMRS extension is applied, and when the antenna port is one of ⁇ 1008,1009,1010,1011 ⁇ , even if w t (1) is +1 good.
- DMRS configuration type 1 when DMRS extension is applied, and when the antenna port is one of ⁇ 1012,1013,1014,1015 ⁇ , w t (1) is -1 even if good.
- w t (0) may be +1.
- the antenna port is one of ⁇ 1000, 1001, 1002, 1003, 1004, 1005 ⁇
- w t (1) may be +1.
- the antenna port is one of ⁇ 1006, 1007, 1008, 1009, 1010, 1011 ⁇
- w t (1) may be -1.
- the antenna port is one of ⁇ 1012, 1013, 1014, 1015, 1016, 1017 ⁇ , w t (1) may be +1.
- w t (1) may be -1.
- DMRS configuration type 2 and when the antenna port is one of ⁇ 1018, 1019, 1020, 1021, 1022, 1023 ⁇ , w t (1) may be -1.
- DMRS configuration type 2 and DMRS extension is applied, and the antenna port is one of ⁇ 1012,1013,1014,1015,1016,1017 ⁇ , w t (1) is +1 It may be.
- DMRS configuration type 2 and DMRS extension is applied, and the antenna port is one of ⁇ 1018,1019,1020,1021,1022,1023 ⁇ , w t (1) is -1 It may be.
- w f (k') may be determined based on one or both of the antenna port and the DMRS configuration type. w f (k') may be determined based on some or all of the following: antenna port, DMRS configuration type, whether DMRS extensions are applied, and DCI format. w f (k') may be determined based on some or all of the following: the antenna port, the DMRS configuration type, whether DMRS extensions are applied, and whether DMRS reception assistance is indicated. good. For DMRS configuration type 1, w f (0) may be +1. In the case of DMRS configuration type 1 and when the antenna port is one of ⁇ 1000, 1002, 1004, 1006, 1008, 1010, 1012, 1014 ⁇ , w f (1) may be +1.
- w f (1) may be -1.
- DMRS configuration type 1 when the antenna port is one of ⁇ 1001, 1003, 1005, 1007, 1009, 1011, 1013, 1015 ⁇ , w f (1) may be -1.
- DMRS configuration type 1 and DMRS extension is applied, and the antenna port is one of ⁇ 1000,1002,1004,1006,1008,1010,1012,1014 ⁇ , w f (1 ) may be +1.
- w f (1 ) may be -1.
- w f (2) may be -1. If the DMRS configuration type is 1 and DMRS extension is applied, w f (2) may be -1. When the DMRS configuration type is 1, when DMRS extension is applied, and when DMRS reception assistance is instructed, w f (2) may be -1. If DMRS configuration type 1 is used, and DMRS extension is applied, and DMRS reception assistance is not indicated, w f (2) may be -1 and w f (2) is not used. You don't have to. If the DMRS configuration type is 1 and the antenna ports are ⁇ 1008,1010,1012,1014 ⁇ , w f (3) may be ⁇ 1.
- w f (3) may be +1.
- w f (3) when the DMRS configuration type is 1, when DMRS extension is applied, and when the antenna ports are ⁇ 1008,1010,1012,1014 ⁇ , w f (3) may be ⁇ 1.
- w f (3) when the DMRS configuration type is 1, when DMRS extension is applied, and when the antenna ports are ⁇ 1009,1011,1013,1015 ⁇ , w f (3) may be +1.
- w f ( 3) may be -1.
- w f ( 3) When the DMRS configuration type is 1, when DMRS extension is applied, when the antenna port is ⁇ 1009,1011,1013,1015 ⁇ , and when DMRS reception assistance is specified, w f ( 3) may be +1. If the DMRS configuration type is 1, and DMRS extension is applied, and the antenna port is ⁇ 1008,1010,1012,1014 ⁇ , and DMRS reception assistance is not specified, w f (3 ) may be -1, and w f (3) may not be used. If the DMRS configuration type is 1, and DMRS extension is applied, and the antenna port is ⁇ 1009,1011,1013,1015 ⁇ , and DMRS reception assistance is not specified, w f (3 ) may be +1 and w f (3) may not be used.
- w f (0) may be +1.
- w f (1) is It may be +1.
- w f (1) is It may be -1.
- w f (1) may be +1.
- w f (1) may be -1.
- w f (2) may be -1. In the case of DMRS configuration type 2 and when DMRS extension is applied, w f (2) may be -1. In the case of DMRS configuration type 2, when DMRS extension is applied, and when DMRS reception assistance is instructed, w f (2) may be -1. If DMRS configuration type 2 is used, and DMRS extension is applied, and DMRS reception assistance is not indicated, w f (2) may be -1 and w f (2) is not used. You don't have to. If the DMRS configuration type is 2 and the antenna ports are ⁇ 1012,1014,1016,1018,1020,1022 ⁇ , w f (3) may be -1.
- w f (3) may be +1. If the DMRS configuration type is 2, and DMRS extension is applied, and the antenna ports are ⁇ 1012,1014,1016,1018,1020,1022 ⁇ , w f (3) is -1. It's okay. If the DMRS configuration type is 2, and DMRS extension is applied, and the antenna ports are ⁇ 1013,1015,1017,1019,1021,1023 ⁇ , w f (3) is +1. It's okay.
- w f (3) may be -1.
- w f (3) may be +1.
- w f (3) may be -1, and w f (3) may not be used. If DMRS configuration type 2 is used, and DMRS extension is applied, and the antenna port is ⁇ 1013,1015,1017,1019,1021,1023 ⁇ , and DMRS reception assistance is not specified, w f (3) may be +1, and w f (3) may not be used.
- a PTRS (Phase tracking reference signal) for a PDSCH may be determined based on a PTRS sequence (PTRS sequence) and mapping to physical resources.
- a sequence (PTRS sequence) corresponding to PTRS for PDSCH may be generated. Mapping a sequence to a physical resource may mean mapping a sequence to one or more resource elements.
- the PTRS sequence r(n) may be the same as the DMRS sequence.
- PTRS may be present in resource blocks used for PDSCH.
- the terminal device 1 may assume that PTRS (PDSCH-PTRS) is scaled by ⁇ PTRS to match the transmission power.
- the terminal device 1 may assume that the PTRS is mapped to one or more resource elements (k, l) p, ⁇ .
- the PTRS sequence r k may be mapped to one or more resource elements a (p, ⁇ ) k,l based on Equation 2.
- a (p, ⁇ ) k,l may be called a physical resource.
- a physical resource may be one or more resource elements.
- the OFDM symbol index l in Formula 2 may be an index within the OFDM symbol allocated for PDSCH transmission.
- One or more first resource elements for PTRS may not be used for one or more second resource elements for DMRS.
- the subcarrier index k for PTRS may be determined based at least on k RE ref .
- k RE ref may be determined based on one or both of the DMRS port (antenna port) and the DMRS configuration type.
- k RE ref may be determined based on some or all of the following: DMRS port (antenna port), DMRS configuration type, and whether DMRS extensions are applied.
- k RE ref is determined based on some or all of the following: DMRS port (antenna port), DMRS configuration type, whether DMRS extensions are applied, and whether DMRS reception assistance is indicated. may be done.
- the DMRS transmission procedure for a PUSCH scheduled on a first PDCCH with a first DCI format may be applied to a PUSCH scheduled on a second PDCCH with a second DCI format.
- the first DCI format may be DCI format 0_1.
- the second DCI format may be DCI format 0_2.
- the transmitted PUSCH is not scheduled by DCI format 0_1/0_2 with CRC scrambled by the first RNTI and does not correspond to the set grant and is not a PUSCH for Type 2 random access procedure.
- the terminal device 1 may use single-symbol forward DMRS with DMRS configuration type 1 on DMRS port 0. Also, the remaining resource elements not used for DMRS may not be used for first PUSCH transmission. If transform precoding is not applied, the first PUSCH transmission may not be a PUSCH with an allocation period of 2 or 1 OFDM symbol. Additional DMRS may be sent according to the scheduling type and PUSCH period.
- the first RNTI may be C-RNTI, CS-RNTI, SP-CSI-RNTI, or MCS-C-RNTI.
- frequency hopping it may be assumed that the upper layer parameter dmrs-AdditionalPosition is equal to 'pos2' and that up to two additional DMRSs are transmitted according to the PUSCH period. If frequency hopping is applied, it may be expected that the upper layer parameter dmrs-AdditionalPosition is equal to 'pos1' and that at most one additional DMRS is transmitted according to the PUSCH period.
- terminal device 1 may use single symbol forward DMRS at DMRS port 0.
- Single symbol forward DMRS may correspond to the DMRS configuration type provided by the upper layer parameter dmrs-Type.
- the maximum number of forward DMRS for PUSCH may be set by the first upper layer parameter.
- the first upper layer parameter may be the upper layer parameter maxLength or may be the upper layer parameter msgA-MaxLength. If the first upper layer parameter is not configured, single-symbol forward DMRS may be scheduled by the DCI or may be configured by the configured grant configuration. .
- the number of additional DMRS for PUSCH may be configured by a second upper layer parameter.
- the second upper layer parameters may be 'pos0', 'pos1', 'pos2' and 'pos3'. For example, if the first upper layer parameter is not set, the second upper layer parameter may be 'pos0', 'pos1', 'pos2' and 'pos3'.
- the second upper layer parameter may be dmrs-AdditionalPosition. If the first upper layer parameter is configured, single symbol forward DMRS (single symbol DMRS) or double symbol forward DMRS (double symbol DMRS) may be scheduled by the DCI or the grant configured It may be set by When the first upper layer parameter is set, the second upper layer parameter may be pos0', 'pos1'.
- the terminal device 1 transmitting the first PUSCH When the terminal device 1 transmitting the first PUSCH is configured with the upper layer parameter phaseTrackingRS, the terminal device 1 assumes that the first configuration and the second configuration do not occur simultaneously for the transmitted PUSCH. It's okay.
- the first configuration may be that in case of DMRS configuration type 1, 4 to 7 DMRS ports are scheduled.
- the first configuration may be that in case of DMRS configuration type 2, 6 to 11 DMRS ports are scheduled.
- the second setting may be that PTRS is sent.
- the first PUSCH may be a PUSCH scheduled according to DCI format 0_2.
- the first PUSCH may be a PUSCH scheduled according to DCI format 0_0 or DCI format 0_1.
- the first configuration may be that in the case of DMRS configuration type 1, any of 4 to 7 DMRS ports and 12 to 15 DMRS ports are scheduled.
- the first configuration may be that in the case of DMRS configuration type 1, any of 6 to 11 DMRS ports and 18 to 23 DMRS ports are scheduled.
- the first configuration is that for DMRS configuration type 1 and when DMRS extension is applied, either 4 to 7 DMRS ports and 12 to 15 DMRS ports are scheduled. Good too.
- the first configuration is that for DMRS configuration type 1 and when DMRS extension is applied, either DMRS ports from 6 to 11 and DMRS ports from 18 to 23 are scheduled. Good too.
- the PTRS transmission procedure may be applied to the first PUSCH transmission (UE PUSCH transmission).
- the first PUSCH transmission may be a PUSCH transmission scheduled according to a first DCI format if the first upper layer parameter is configured.
- the first upper layer parameter may be phaseTrackingRS.
- the first DCI format may be DCI format 0_0, DCI format 0_1, or DCI format 0_2.
- the first PUSCH transmission may be a PUSCH transmission corresponding to a configured grant if the first upper layer parameter is configured.
- PTRS may be present in the second PUSCH.
- the second PUSCH may be a PUSCH scheduled by a PDCCH with a CRC scrambled by a second RNTI.
- the second PUSCH may be a PUSCH corresponding to a grant to be configured.
- the second RNTI may be one of MCS-C-RNTI, C-RNTI, CS-RNTI, and SP-CSI-RNTI.
- the maximum number of PTRS ports may be given by the upper layer parameter maxNrofPorts.
- the upper layer parameter maxNrofPorts may be an upper layer parameter in the upper layer parameter UplinkConfig. The terminal device 1 does not need to expect that the number of PTRS ports (or UL PTRS ports) will be set higher than the reported number.
- the terminal device 1 may report the ability to support full-coherent UL transmission. If the terminal device 1 reports the ability to support full coherent uplink transmission, the terminal device 1 may expect the number of PTRS ports (or UL PTRS ports) to be configured as one.
- Two transmission techniques may be supported for PUSCH.
- the two transmission methods may be codebook based transmission or codebook based UL transmission and non-codebook based transmission or non-codebook based UL transmission.
- One PTRS port may be associated with one DMRS port.
- the PTRS port-DMRS port relationship (Association between (UL) PTRS port(s) and DMRS port(s)) is signaled by the first field.
- the first field may be a PTRS-DMRS association field.
- the first field may be included in DCI format 0_1 or DCI format 0_2.
- the PTRS port-DMRS port relationship may have a value of 0 or “00” in the first field.
- the PTRS port may be associated with DMRS port 0.
- the number (actual number) of PTRS ports may be determined based on the SRI (SRS resource indicator) or the upper layer parameter sri-ResourceIndicator in the first DCI format.
- the number (actual number) of PTRS ports may be eight. If two SRS resource sets are configured and the upper layer parameter usage is set to 'noncodebook', the number of PTRS ports for transmission that correspond to each SRS resource set (actual number) may be determined based on the SRI corresponding to the related SRS resource set, or may be determined based on the upper layer parameter srs-ResourceIndicator/srs-ResourceIndicator2 corresponding to the related SRS resource set.
- the PTRS port index may be set by the upper layer parameter ptrs-PortIndex. For example, if the upper layer parameter phaseTrackingRS is set, the PTRS port index may be set by the upper layer parameter ptrs-PortIndex.
- the PTRS port index may be a PTRS port index for each configured SRS resource.
- the number of PTRS ports is based on TPMI and/or number of layers. may be determined.
- the number of layers may be determined based on the DCI format. For example, the number of layers may be indicated by DCI format 0_1 and a precoding information and number of layers field in the DCI format.
- the upper layer parameter maxNrofPorts is set to 'n2', the number of PTRS ports (actual number) and associated transmission layer may be derived from TPMI.
- antenna port (PUSCH antenna port) 1000 and antenna port 1002 in TPMI may share PTRS port 0.
- Antenna port 1001 and antenna port 1003 in TPMI may share PTRS port 1.
- PTRS port 0 may be associated with layer x.
- Layer x may be transmitted on antenna port 1000 and antenna port 1002 in TPMI.
- PTRS port 1 may be associated with layer y.
- Layer y may be transmitted on antenna port 1001 and antenna port 1003 in TPMI.
- One or both of x and y may be given by the PTRS-DMRS relationship (PTRS-DMRS relationship field), which is a DCI parameter.
- PTRS-DMRS relationship field is a DCI parameter.
- antenna port ⁇ 1000,1002,1004,1006 ⁇ may be shared with PTRS port 0.
- Antenna port ⁇ 1001,1003,1005,1007 ⁇ may be shared with PTRS port 1.
- PTRS port 0 may be associated with layer x'.
- Layer x' may be transmitted on some or all of the antenna ports ⁇ 1000, 1002, 1004, 1006 ⁇ .
- PTRS port 1 may be associated with layer y'.
- Layer y' may be transmitted on some or all of the antenna ports ⁇ 1001, 1003, 1005, 1007 ⁇ . If the upper layer parameter maxNrofPorts is 'n2' and if it is partially coherent or non-coherent, layer x' and layer y' may be determined. If 8 antenna ports are applied, layer x' and layer y' may be provided. If DMRS extensions are applied, layer x' and layer y' may be provided.
- the precoding information-number of layers field may be included in one or both of DCI format 0_1 and DCI format 0_2.
- the precoding information-number of layers field may determine the number of layers and TPMI (or TPMI index).
- TPMI Transmission Precoding Matrix Indicator
- a precoding matrix may be used for layer to antenna port mapping.
- the precoding matrix may be used for beamforming.
- Precoding information - The number of information bits that make up the number of layers field is a combination of the number of antenna ports, the maximum number of ranks (layers), whether transform precoding is applied, the power mode, and the codebook subset. It may be determined based on part or all. Information bits may be bit fields.
- the antenna port field may be included in one or both of DCI format 0_1 and DCI format 0_2.
- the value of the antenna port field may determine one or both of the DMRS port and the number of CDM groups without data (DMRS-CDM groups).
- the rank (number of layers) may be 1. If conversion precoding is applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 1, and no DMRS extension is applied, one of the four DMRS ports One DMRS port may be determined by the antenna port field. If conversion precoding is applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 1, and DMRS extension is applied, the eight DMRS ports One DMRS port may be determined by the antenna port field.
- one of the eight DMRS ports One DMRS port may be determined by the antenna port field. If conversion precoding is applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 2, and DMRS extension is applied, 16 DMRS ports One DMRS port may be determined by the antenna port field.
- one DMRS port out of four DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 1, and the If no extensions are applied, one DMRS port out of four DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 1, and the If the extension is applied, one DMRS port out of eight DMRS ports may be determined by the antenna port field.
- the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 2, and DMRS If no extensions are applied, two of the four DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 2, and DMRS If the extension is applied, two of the eight DMRS ports may be determined by the antenna port field.
- the DMRS port ⁇ 0,1,2 ⁇ may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 3, and DMRS If the extension is applied, three of the eight DMRS ports may be determined by the antenna port field. If DMRS extension is applied, there may be multiple combinations of three DMRS ports determined by the antenna port field.
- the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 1, and DMRS If no extensions are applied, one DMRS port out of eight DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 1, and DMRS If the extension is applied, one DMRS port among the 16 DMRS ports may be determined by the antenna port field.
- conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 2, and DMRS If no extensions are applied, two of the eight DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 2, and DMRS If the extension is applied, 2 DMRS ports out of 16 DMRS ports may be determined by the antenna port field.
- the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 3, and DMRS If no extensions are applied, three of the eight DMRS ports (or seven DMRS ports) may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 1, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 3, and DMRS If the extension is applied, 3 DMRS ports out of 16 DMRS ports (or 15 DMRS ports, or 14 DMRS ports) may be determined by the antenna port field.
- the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 1, and DMRS If no extensions are applied, one DMRS port out of six DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 1, and DMRS If the extension is applied, 1 DMRS port out of 12 DMRS ports may be determined by the antenna port field.
- conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 2, and DMRS If no extensions are applied, two of the six DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 2, and DMRS If the extension is applied, 2 DMRS ports out of 12 DMRS ports may be determined by the antenna port field.
- DMRS If no extensions are applied, three of the six DMRS ports may be determined by the antenna port field. DMRS If the extension is applied, 3 DMRS ports out of 12 DMRS ports may be determined by the antenna port field.
- conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 4, and DMRS If no extensions are applied, four of the six DMRS ports (or four DMRS ports) may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 1, and the rank (number of layers) is 4, and DMRS If the extension is applied, 4 DMRS ports out of 12 DMRS ports (or 8 DMRS ports) may be determined by the antenna port field.
- conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 2, and DMRS If no extensions are applied, 2 of the 12 DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 2, and DMRS If the extension is applied, 2 DMRS ports out of 24 DMRS ports may be determined by the antenna port field.
- conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 4, and DMRS If no extensions are applied, 4 of the 12 DMRS ports may be determined by the antenna port field. If conversion precoding is not applied, and the upper layer parameter dmrs-Type is 2, and the upper layer parameter maxLength is 2, and the rank (number of layers) is 4, and DMRS If the extension is applied, 4 DMRS ports out of 24 DMRS ports may be determined by the antenna port field.
- the rank (or the value of the rank) may be determined according to the SRS resource indicator field.
- the rank (or rank value) may be determined according to the precoding information-number of layers field.
- Whether DMRS reception assistance is applied may be determined based on the DCI format. For example, the antenna port field included in the DCI format may determine whether DMRS reception assistance is applied. For example, one of the information bits making up the antenna port field may determine whether DMRS reception assistance is applied.
- the PTRS-DMRS association field may be included in one or both of DCI format 0_1 and DCI format 0_2. If DMRS extension is not applied, the number of bits (number of information bits) constituting the PTRS-DMRS relationship field may be 2 bits. When DMRS extension is applied, the number of bits configuring the PTRS-DMRS relationship field may be 3 bits.
- the PTRS-DMRS relationship field may indicate the relationship between the PTRS port and the DMRS port.
- One or two PTRS ports may be configured by upper layer parameters (eg, maxNrofPorts).
- the DMRS port may be indicated by the antenna port field. If the SRS resource indication field is present and the maximum rank number is greater than 2, the PTRS-DMRS relationship field is the DMRS port corresponding to one or both of the SRS resource indication field and the precoding information - number of layers field. It may also indicate the relationship between the PTRS port and the PTRS port.
- the Most significant Bit of the PTRS-DMRS relationship field MSB may indicate the relationship between the DMRS port and PTRS port corresponding to one or both of the SRS resource indication field and the precoding information-number of layers field.
- the lower significant bit (LSB) of the PTRS-DMRS relationship field is the second SRS resource indicator field and the second precoding information field. The relationship between a DMRS port and a PTRS port corresponding to one or both may be indicated.
- the maximum number of ranks may be determined by the upper layer parameter maxRank.
- a second PTRS-DMRS association field may be included in one or both of DCI format 0_1 and DCI format 0_2. If DMRS extension is not applied, the number of bits (number of information bits) constituting the PTRS-DMRS relationship field may be 2 bits. When DMRS extension is applied, the number of bits configuring the PTRS-DMRS relationship field may be 3 bits.
- the second PTRS-DMRS relationship field may indicate the relationship between the DMRS port and the PTRS port corresponding to one or both of the second SRS resource indication field and the second precoding information field.
- a second precoding information field may be included in one or both of DCI format 0_1 and DCI format 0_2.
- the second precoding information field may determine the TPMI (or TPMI index).
- One or both of the SRS resource indicator field and the Second SRS resource indicator field may be included in DCI format 0_1 and DCI format 0_2.
- DMRS for PUSCH may be determined based on some or all of sequence generation, precoding, and mapping to physical resources.
- the DMRS sequence r(n) may be the same as the DMRS sequence for PDSCH.
- the DMRS sequence r(n) may be determined based on at least the pseudorandom sequence c(i).
- the transmitter and the baseband section in the transmitter may generate DMRS (DMRS sequence).
- DMRS (DMRS sequence) r(n) may be mapped to physical resources.
- DMRS r(n) may be mapped to a virtual resource and then mapped to a physical resource.
- DMRS (PDSCH-DMRS) may be mapped to a virtual resource (or intermediate quantity) a' (p'(j), ⁇ ) k,l .
- the DMRS sequence r(n) may be mapped to the virtual resource a' (p', ⁇ ) k,l based at least on the frequency-domain orthogonal cover code index k'. If DMRS reception assistance is not applied, k' may be ⁇ 0,1 ⁇ .
- k' may be ⁇ 0,1,2,3 ⁇ .
- the subcarrier index k may be determined based on the frequency domain orthogonal cover code index k' and the DMRS configuration type.
- p' j may be p'(j).
- p' j may be p' 0 to p' v-1 .
- v may be the number of layers.
- a vector of virtual resources a' (p'(j), ⁇ ) k,l of length v is transformed into a vector of physical resources a (p, ⁇ ) k,l of length ⁇ by at least the precoding matrix W. It's okay.
- a vector of virtual resource a' (p'(j), ⁇ ) k,l of length v becomes a vector of physical resource a (p, ⁇ ) k,l of length ⁇ by multiplication with precoding matrix W. May be converted.
- ⁇ p' 0 , ..., p' v-1 ⁇ may be a set of virtual antenna ports.
- the virtual antenna port may be a DMRS antenna port.
- a virtual antenna port or a DMRS antenna port may be called an antenna port.
- ⁇ p 0 , ..., p ⁇ -1 ⁇ may be a set of antenna ports.
- Precoding matrix W may be used for precoding for PUSCH.
- the precoding matrix may be determined by TPMI (TPMI index). That is, the precoding matrix may be determined based on the precoding information-number of layers field in the DCI format.
- the transmitter and the baseband section in the transmitter may generate a PTRS (PTRS sequence).
- PTRS (PTRS sequence) r p'(j) (m) at layer j may be generated.
- r p'(j') (m) may be the DMRS sequence r(m).
- r p'(j'') (m) may be the DMRS sequence r(m).
- r p'(j) (m) may be 0 if j is not either j' or j''.
- p'(j') may be an antenna port (virtual antenna port, DMRS port) related to PTRS transmission.
- p'(j') and p'(j'') may be antenna ports (virtual antenna ports, DMRS antenna ports) related to PTRS transmission.
- p'(j') may be associated with the first DMRS port.
- p'(j'') may be associated with a second DMRS port.
- One or both of the first DMRS port and the second DMRS port may be determined by a PTRS-DMRS relationship field.
- PTRS (PTRS sequence) r p'(j) (m) may be mapped to physical resource a (p, ⁇ ) k,l based at least on the precoding matrix W.
- a vector of r p'(j) (m) of length v may be transformed by at least the precoding matrix W into a vector of physical resources a (p, ⁇ ) k,l of length ⁇ .
- p may be ⁇ p 0 , ..., p ⁇ -1 ⁇ .
- the subcarrier index k for PTRS may be determined based at least on k RE ref .
- k RE ref may be determined based on one or both of the DMRS antenna port p' and the DMRS configuration type.
- k RE ref may be determined based on some or all of the DMRS antenna port p', the DMRS configuration type, and whether DMRS extensions are applied.
- k RE ref is determined based on some or all of the following: DMRS antenna port p', DMRS configuration type, whether DMRS extensions are applied, and whether DMRS reception assistance is indicated. It's okay.
- one or more first DMRS ports used by a terminal device may interfere with one or more second DMRS ports used by other terminal devices.
- interference may exist even if the resources (physical resources) for the first DMRS port are different from the resources for the second DMRS port.
- interference can hinder communications.
- PTRS may be used to correct phase errors.
- one PTRS port may correspond to one DMRS port among one or more DMRS ports
- PTRS port enhancement is also required for DMRS port expansion.
- one or both of means 1 and 2 may be used for part or all of DMRS port expansion, PTRS port enhancement, and interference suppression.
- FIG. 9 is a diagram showing an example of mapping of DMRS to antenna ports in one aspect of this embodiment.
- the first DMRS (DMRS sequence) may be mapped to a resource element corresponding to OFDM symbol 910 and antenna port #900 (AP #900).
- the second DMRS may be mapped to a resource element corresponding to OFDM symbol 911 and antenna port #901 (AP #901).
- the third DMRS may be mapped to a resource element corresponding to OFDM 912 and antenna port #902 (AP #902).
- one block may be a resource element.
- DMRS may be arranged (mapped) in blocks marked with "+" or "-”. In FIG. 9, DMRS does not need to be placed in white blocks.
- the first DMRS may be mapped to the first physical resource.
- the second DMRS may be mapped to a second physical resource.
- the third DMRS may be mapped to a third physical resource.
- the first physical resource may be based on at least OFDM symbol 910 and antenna port #900.
- the second physical resource may be based on at least OFDM symbol 911 and antenna port #901.
- the third physical resource may be based on at least OFDM symbol 912 and antenna port #902.
- DMRS extensions may be applied.
- DMRS reception assistance may or may not be applied.
- the DMRS in FIG. 9 may be a single symbol forward DMRS in DMRS configuration type 1.
- antenna port #901 may be antenna port #902. That is, antenna port #901 may be the same as antenna port #902.
- OFDM symbol 911 may be the same as OFDM symbol 912.
- the second DMRS may be mapped based on the second w f (k').
- the third DMRS may be mapped based on the second w f (k').
- the second w f (k') may be ⁇ +1,-1,+1,-1 ⁇ .
- k' may be ⁇ 0,1,2,3 ⁇ , and the second DMRS is mapped based on the second w f (k') Good too.
- k' may be ⁇ 0,1 ⁇ and the third DMRS may be mapped based on the second w f (k').
- the CDM group corresponding to antenna port #900 may be the same as the CDM group corresponding to antenna port #901.
- the first DMRS and the second DMRS may be scheduled simultaneously.
- the CDM group corresponding to antenna port #900 may be the same as the CDM group corresponding to antenna port #902.
- the first DMRS may not be expected to be scheduled simultaneously with the second DMRS.
- Both antenna port #900 and antenna port #902 may not be used.
- both antenna port #900 and antenna port #902 may not be used.
- both antenna port #900 and antenna port #902 may not be used in one or both of one PDSCH transmission and one PUSCH transmission.
- the OFDM symbol 910, OFDM symbol 911, and OFDM symbol 912 may be the same OFDM symbol.
- the base station device 3 performs the same first PDSCH transmission with the first DMRS for the first terminal device and second PDSCH transmission with the second DMRS for the second terminal device. It may be in a resource element.
- Base station device 3 performs the same first PDSCH transmission with the first DMRS for the first terminal device and third PDSCH transmission with the third DMRS for the third terminal device. It does not have to be done in the resource element.
- the terminal device 1 at antenna port #900 does not need to expect precoding of the co-scheduled terminal device at antenna port #902.
- antenna port #900 may not be used, and antenna port #902 may be used.
- DMRS (DMRS sequence, DMRS sequence) r( ⁇ ) for PDSCH may be mapped to one or more resource elements a (p, ⁇ ) k,l .
- DMRS (DMRS sequence, DMRS sequence) r( ⁇ ) for PUSCH may be mapped to one or more virtual resources a' (p'(j), ⁇ ) k,l .
- a virtual resource may be mapped to one or more resource elements a (p, ⁇ ) k,l based on the precoding matrix W.
- One or more resource elements may be referred to as a physical resource.
- w f (k') may be used. That is, the DMRS may be mapped to physical resources (or virtual resources) based at least on the first frequency domain orthogonal cover code index k' or the second frequency domain orthogonal cover code index k'.
- the first frequency domain orthogonal cover code index k' may be 0 and 1.
- the second frequency domain orthogonal cover code index k' may be 0, 1, 2, and 3.
- the physical resource may be determined based on the first index k'. If DMRS reception assistance is applied, the physical resource (or virtual resource) may be determined based on the second index k'.
- the length K for mapping DMRS in the frequency domain may be 4. If DMRS reception assistance is not applied, the length K for mapping DMRS in the frequency domain may be 2.
- the length K related to DMRS mapping in the frequency domain may be the length of a frequency domain orthogonal cover code. If the index related to a subcarrier is k'', then the frequency domain orthogonal cover code index k' may be mod(k'', K). Whether DMRS extensions are applied may be determined by upper layer parameters. Whether DMRS reception assistance is applied may be determined based on the DCI format. The DCI format may indicate whether DMRS reception assistance is applied.
- the first field in the DCI format may determine the antenna port (DMRS port).
- the second field in the DCI format may determine whether DMRS reception assistance is applied.
- the first field may be the same as the second field. That is, one field in the DCI format may indicate one or both of the antenna port (DMRS port) and whether DMRS reception assistance is applied. For example, if DMRS extensions are applied, one field in the DCI format may indicate both the antenna port (DMRS port) and whether DMRS reception assistance is applied. For example, if DMRS extensions are not applied, one field in the DCI format may not indicate whether DMRS reception assistance is applied.
- the maximum number of DMRS ports when DMRS extensions are applied may be greater than the maximum number of DMRS ports when DMRS extensions are not applied. For example, if DMRS extension is applied, the maximum number of DMRS ports may be the first value. If DMRS extensions are not applied, the maximum number of DMRS ports may be a second value.
- PTRS PTRS sequence, PTRS sequence
- PTRS PTRS sequence, PTRS sequence
- PTRS sequence for PUSCH
- One or two DMRS ports of the one or more DMRS ports may be determined based on one field in the DCI format. Each of the one or two DMRS ports may be associated with one PTRS port.
- the PTRS port may be an antenna port associated with PTRS transmission.
- one field may consist of 0 or X bits. If DMRS extensions are applied, one field may consist of 0 or X' bits. The X' bit may be larger than the X bit. The X bit may be 2 bits. The X' bit may be 3 bits. If DMRS extensions are applied and if layer extensions are applied, one field may consist of 0 or X' bits. The maximum number of layers when layer expansion is applied may be greater than the maximum number of layers when layer expansion is not applied. For example, if layer expansion is applied, uplink transmission of up to 8 layers may be performed. If layer extensions are applied, one field may consist of 0 or X' bits.
- the subcarrier index for PTRS may be determined based on at least whether DMRS extensions are applied. For example, k RE ref may be determined based on at least whether DMRS extensions are applied.
- PTRS may not be transmitted.
- a certain antenna port may be an antenna port (DMRS port) that becomes usable by applying DMRS extension.
- DMRS port an antenna port
- PTRS may not be transmitted or determined.
- PTRS may be transmitted or determined if DMRS extensions are applied and DMRS reception assistance is not applied. If DMRS extensions are applied, it may be assumed that PTRS does not exist. If the upper layer parameter phaseTrackingRS is set, no DMRS extensions may be expected to be applied. If the DMRS extension is applied, the upper layer parameter phaseTrackingRS may not be expected to be set.
- PTRS is mapped in a certain resource element of the first antenna port
- data may not be mapped in the certain resource element of the second antenna port.
- PTRS is mapped in a certain resource element of the first antenna port for the terminal device 1
- it is expected that data is mapped in that certain resource element of the second antenna port for the co-scheduled terminal device. You don't have to.
- the terminal device 1 may not expect that the DMRS extension is not applied for the co-scheduled terminal device.
- the DMRS reception assistance is applied for the terminal device 1, the terminal device 1 may not expect that the DMRS reception assistance is not applied for the co-scheduled terminal device.
- the first antenna port may be antenna port #900.
- the first antenna port may be one of the antenna ports that becomes usable by applying DMRS extension.
- the first antenna port may be an antenna port for the terminal device 1.
- the second antenna port may be an antenna port for the terminal device 1 or another terminal device (for example, a co-scheduled terminal device).
- the antenna port that becomes usable by applying DMRS extension does not have to be an antenna port related to PTRS. For example, it may be assumed that PTRS does not exist in an antenna port that becomes usable by applying DMRS extension.
- the terminal device 1 may include a receiving unit that receives a PDSCH and a DCI format that instructs reception of the PDSCH.
- the terminal device 1 is a transmitter that generates part or all of a PDSCH, a DMRS (DMRS sequence) for the PDSCH, and a PTRS (PTRS sequence) for the PDSCH, or a baseband transmitter in the transmitter. It may also include a section.
- the DCI format may include a first field.
- the first field may or may not indicate first information. Indicating the first information may be applying a DMRS reception aid.
- the first field may be an antenna port field.
- a DMRS may be mapped to one or more resource elements (or physical resources).
- One or more resource elements may be determined based on the first index or the second index.
- the values that the first index can take may not be the same as the values that the second index can take.
- the first index may have values of 0 and 1.
- the second index may have values of 0, 1, 2, and 3.
- the first index and the second index may be indices in the frequency domain.
- the first index and the second index may be frequency domain orthogonal cover code indices.
- One or more resource elements may be determined based on the first length or the second length.
- the first length may be two.
- the second length may be four.
- the first length and the second length may be lengths in the frequency domain.
- the first length and the second length may be the number of elements of w f (k').
- the first length and the second length may be lengths of frequency domain orthogonal cover codes.
- the one or more resource elements may be determined based on one or both of the first index and the first length. If the first field indicates the first information, the one or more resource elements may be determined based on one or both of the second index and the second length.
- the terminal device 1 may include a radio resource control layer processing unit that receives the first upper layer parameter.
- the first upper layer parameter may be a parameter regarding one or both of the number of DMRS ports and the maximum number of DMRS ports. For example, if a first upper layer parameter is configured, the DCI format may include a first field. If the first upper layer parameter is not set, the DCI format may not include the first field. If the first upper layer parameter is configured, the maximum number of DMRS ports may be the first value. If the first upper layer parameter is not configured, the maximum number of DMRS ports may be the second value. The first value may be different from the second value.
- the first upper layer parameter may be ExtendedDMRSports.
- the terminal device 1 may include a receiving unit that receives the PDCCH to which the DCI is mapped.
- the terminal device 1 may include a transmitter that transmits part or all of the PUSCH, the DMRS for the PUSCH, and the PTRS for the PUSCH.
- the DCI may instruct the transmission of PUSCH.
- the terminal device 1 may include a transmitting unit that generates DMRS (DMRS sequence) for PUSCH and PTRS (PTRS sequence) for PUSCH, or a baseband unit in the transmitting unit.
- a DMRS sequence for PUSCH may be defined.
- a PTRS sequence for PUSCH may be provided.
- the DCI format may include a second field.
- the second field may indicate one DMRS port among N DMRS ports.
- One PTRS port may be determined based on one DMRS port.
- the second field may indicate two DMRS ports among the N' DMRS ports.
- the two PTRS ports may be determined based on the two DMRS ports.
- a PTRS port for PTRS may be determined based on the second field and the one or more DMRS ports for DMRS.
- An antenna port associated with PTRS may be determined based on the second field and the one or more DMRS ports for DMRS.
- the second field may be configured with the first number of bits (number of information bits).
- the second field may be configured with a second number of bits (number of information bits).
- the first number of bits may be 2 bits.
- the second number of bits may be 3 bits.
- the terminal device 1 may include a radio resource control layer processing unit that receives the second upper layer parameter.
- the second upper layer parameter may be a parameter regarding one or both of the number of DMRS ports and the maximum number of DMRS ports. If the first upper layer parameter is configured, the maximum number of DMRS ports may be a third value. If the first upper layer parameter is not configured, the maximum number of DMRS ports may be the second value. The first value may be different from the fourth value.
- the first upper layer parameter may be configured for the downlink.
- the second upper layer parameter may be configured for uplink.
- the second upper layer parameter may be ExtendedDMRSports.
- a first aspect of the present invention is a terminal device that includes a receiving unit that receives a PDSCH and a DCI format that instructs reception of the PDSCH, and the DCI format includes a first field.
- the DMRS for the PDSCH is mapped to one or more resource elements, and the one or more resource elements are determined based on a first index or a second index, and the first index is not the same as the possible values of said second index, and if said first field does not indicate first information, said one or more resource elements are and if the first field indicates the first information, the one or more resource elements are determined based on the second index.
- a radio resource control layer processing unit receiving a first upper layer parameter, the first upper layer parameter relating to a maximum number of DMRS ports for the DMRS.
- a second aspect of the present invention is a base station device, which includes a transmitting unit that transmits a PDSCH and a DCI format that instructs reception of the PDSCH, and the DCI format includes a first field.
- DMRS for the PDSCH is mapped to one or more resource elements, the one or more resource elements are determined based on a first index or a second index, and the DMRS for the PDSCH is mapped to one or more resource elements, and the one or more resource elements are determined based on a first index or a second index, If the possible values of the index of are not the same as the possible values of the second index, and if the first field does not indicate first information, then the one or more resource elements If the first field indicates the first information, the one or more resource elements are determined based on the second index. Furthermore, it comprises a radio resource control layer processing unit that transmits a first upper layer parameter, the first upper layer parameter relating to the maximum number of DMRS ports for the DMRS.
- a third aspect of the present invention is a terminal device that includes a receiving unit that receives a PDCCH to which a DCI format that instructs transmission of the PUSCH is mapped, a transmitting unit that transmits the PUSCH, and a transmitting unit that transmits the PUSCH.
- the first upper layer parameter is related to a maximum number of DMRS ports for the DMRS, If the layer parameter is not set, the first field in the DCI format is configured with a first number of bits, and if the first upper layer parameter is set, the first field in the DCI format is configured with: A PTRS port for the PTRS is determined based on the first field and one or more DMRS ports for the DMRS.
- a fourth aspect of the present invention is a terminal device, comprising a transmitting unit that transmits a PDCCH to which a DCI format that instructs PUSCH transmission is mapped, and a receiving unit that receives the PUSCH, A DMRS for the PUSCH and a PTRS for the PUSCH are generated, the first upper layer parameter is related to the maximum number of DMRS ports for the DMRS, and the first upper layer parameter is set. If not, the first field in the DCI format consists of a first number of bits, and if the first upper layer parameter is set, the first field in the DCI format consists of a second number of bits. and a PTRS port for the PTRS is determined based on the first field and one or more DMRS ports for the DMRS.
- a program running on the base station device 3 and the terminal device 1 related to one aspect of the present invention controls a CPU (Central Processing Unit) etc. so as to realize the functions of the above embodiment related to one aspect of the present invention. It may also be a program (a program that makes a computer function).
- the information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). It is read, modified, and written by the CPU as necessary.
- part of the terminal device 1 and the base station device 3 in the embodiment described above may be realized by a computer.
- a program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed.
- the "computer system” here refers to a computer system built into the terminal device 1 or the base station device 3, and includes hardware such as an OS and peripheral devices.
- the term “computer-readable recording medium” refers to portable media such as flexible disks, magneto-optical disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into computer systems.
- a "computer-readable recording medium” refers to a medium that dynamically stores a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In that case, it may also include something that retains a program for a certain period of time, such as a volatile memory inside a computer system that is a server or a client. Further, the above-mentioned program may be one for realizing a part of the above-mentioned functions, or may be one that can realize the above-mentioned functions in combination with a program already recorded in the computer system.
- the base station device 3 in the embodiment described above can also be realized as an aggregate (device group) composed of a plurality of devices.
- Each of the devices constituting the device group may include a part or all of each function or each functional block of the base station device 3 related to the embodiment described above.
- As a device group it is sufficient to have each function or each functional block of the base station device 3.
- the terminal device 1 according to the embodiment described above can also communicate with a base station device as an aggregate.
- the base station device 3 in the embodiment described above may be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and/or NG-RAN (NextGen RAN, NR RAN). Furthermore, the base station device 3 in the embodiment described above may have some or all of the functions of an upper node for eNodeB and/or gNB.
- EUTRAN Evolved Universal Terrestrial Radio Access Network
- NG-RAN NextGen RAN, NR RAN
- the base station device 3 in the embodiment described above may have some or all of the functions of an upper node for eNodeB and/or gNB.
- part or all of the terminal device 1 and base station device 3 in the embodiments described above may be realized as an LSI, which is typically an integrated circuit, or may be realized as a chipset. Each functional block of the terminal device 1 and the base station device 3 may be individually chipped, or a part or all of them may be integrated into a chip.
- the method of circuit integration is not limited to LSI, but may be realized using a dedicated circuit or a general-purpose processor. Further, if an integrated circuit technology that replaces LSI emerges due to advances in semiconductor technology, it is also possible to use an integrated circuit based on this technology.
- a terminal device was described as an example of a communication device, but the present invention is not limited to this, and the present invention is applicable to stationary or non-movable electronic devices installed indoors or outdoors, For example, it can be applied to terminal devices or communication devices such as AV equipment, kitchen equipment, cleaning/washing equipment, air conditioning equipment, office equipment, vending machines, and other household equipment.
- One embodiment of the present invention is used in, for example, a communication system, a communication device (e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (e.g., a communication chip), a program, or the like. be able to.
- a communication device e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device
- an integrated circuit e.g., a communication chip
- a program e.g., a program, or the like.
- Terminal device 3
- Base station device 10 30
- Radio transmitting/receiving section 10a 30a Radio transmitting section 10b, 30b
- Radio receiving section 11 31 Antenna section 12, 32 RF section 13, 33 Baseband section 14, 34
- Upper layer processing units 15, 35 Medium access control layer processing units 16, 36
- Search area set 300 Component carrier 301
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Abstract
Description
本願は、2022年6月17日に日本に出願された特願2022-97704号について優先権を主張し、その内容をここに援用する。
・PUCCH(Physical Uplink Control CHannel)
・PUSCH(Physical Uplink Shared CHannel)
・PRACH(Physical Random Access CHannel)
・UL DMRS(UpLink Demodulation Reference Signal)
・SRS(Sounding Reference Signal)
・UL PTRS(UpLink Phase Tracking Reference Signal)
・PBCH(Physical Broadcast Channel)
・PDCCH(Physical Downlink Control Channel)
・PDSCH(Physical Downlink Shared Channel)
0A)無線フレームビット
0B)ハーフ無線フレーム(ハーフシステムフレーム、ハーフフレーム)ビット
0C)SS/PBCHブロックインデックスビット
0D)サブキャリアオフセットビット
1A)DCIフォーマット特定フィールド(Identifier field for DCI formats)
1B)周波数領域リソース割り当てフィールド(Frequency domain resource assignment field)
1C)時間領域リソース割り当てフィールド(Time domain resource assignment field)
1D)周波数ホッピングフラグフィールド(Frequency hopping flag field)
1E)MCSフィールド(MCS field: Modulation and Coding Scheme field)
2A)DCIフォーマット特定フィールド
2B)周波数領域リソース割り当てフィールド
2C)上りリンクの時間領域リソース割り当てフィールド
2D)周波数ホッピングフラグフィールド
2E)MCSフィールド
2F)CSIリクエストフィールド(CSI request field)
2G)BWPフィールド(BWP field)
2H)キャリアインディケータフィールド(Carrier indicator field)
3A)DCIフォーマット特定フィールド
3B)周波数領域リソース割り当てフィールド
3C)時間領域リソース割り当てフィールド
3D)MCSフィールド
3E)PDSCH_HARQフィードバックタイミング指示フィールド(PDSCH to HARQ feedback timing indicator field)
3F)PUCCHリソース指示フィールド(PUCCH resource indicator field)
4A)DCIフォーマット特定フィールド
4B)周波数領域リソース割り当てフィールド
4C)時間領域リソース割り当てフィールド
4E)MCSフィールド
4F)PDSCH_HARQフィードバックタイミング指示フィールド
4G)PUCCHリソース指示フィールド
4H)BWPフィールド
4I)キャリアインディケータフィールド
・同期信号(SS:Synchronization signal)
・DL DMRS(DownLink DeModulation Reference Signal)
・CSI-RS(Channel State Information-Reference Signal)
・DL PTRS(DownLink Phase Tracking Reference Signal)
5A)セルサーチ(cell search)
5B)ランダムアクセス(random access)
5C)データ通信(data communication)
6A)PDCCHの監視間隔(PDCCH monitoring periodicity)
6B)スロット内のPDCCHの監視パターン(PDCCH monitoring pattern within a slot)
6C)PDCCHの監視オフセット(PDCCH monitoring offset)
3 基地局装置
10、30 無線送受信部
10a、30a 無線送信部
10b、30b 無線受信部
11、31 アンテナ部
12、32 RF部
13、33 ベースバンド部
14、34 上位層処理部
15、35 媒体アクセス制御層処理部
16、36 無線リソース制御層処理部
91、92、93、94 探索領域セット
300 コンポーネントキャリア
301 プライマリセル
302、303 セカンダリセル
700 PSSのためのリソースエレメントのセット
710、711、712、713 PBCH、および、PBCHのためのDMRSのためのリソースエレメントのセット
720 SSSのためのリソースエレメントのセット
3000 ポイント
3001、3002 リソースグリッド
3003、3004 BWP
3011、3012、3013、3014 オフセット
3100、3200 共通リソースブロックセット
900、901、902 アンテナポート
910、911、912 OFDMシンボル
Claims (3)
- PUSCHの送信を指示するDCIフォーマットがマップされるPDCCHを受信する受信部と、
前記PUSCHを送信する送信部と、
前記PUSCHのためのDMRSと、前記PUSCHのためのPTRSと、を生成する前記送信部と、を備え、
第一の上位層パラメータは、前記DMRSのためのDMRSポート最大数に関係し、
前記第一の上位層パラメータが設定されない場合、前記DCIフォーマットにおける第一のフィールドは、第一のビット数で構成され、
前記第一の上位層パラメータが設定される場合、前記DCIフォーマットにおける前記第一のフィールドは、第二のビット数で構成され、
前記第一のフィールドと、前記DMRSのための1または複数のDMRSポートと、に基づいて、前記PTRSのためのPTRSポートが決定される端末装置。 - PUSCHの送信を指示するDCIフォーマットがマップされるPDCCHを送信する送信部と、
前記PUSCHを受信する受信部と、を備え、
前記PUSCHのためのDMRSと、前記PUSCHのためのPTRSと、が生成され、
第一の上位層パラメータは、前記DMRSのためのDMRSポート最大数に関係し、
前記第一の上位層パラメータが設定されない場合、前記DCIフォーマットにおける第一のフィールドは、第一のビット数で構成され、
前記第一の上位層パラメータが設定される場合、前記DCIフォーマットにおける前記第一のフィールドは、第二のビット数で構成され、
前記第一のフィールドと、前記DMRSのための1または複数のDMRSポートと、に基づいて、前記PTRSのためのPTRSポートが決定される基地局装置。 - 端末装置に用いられる通信方法であって、
PUSCHの送信を指示するDCIフォーマットがマップされるPDCCHを受信するステップと、
前記PUSCHを送信するステップと、
前記PUSCHのためのDMRSと、前記PUSCHのためのPTRSと、を生成するステップと、を備え、
第一の上位層パラメータは、前記DMRSのためのDMRSポート最大数に関係し、
前記第一の上位層パラメータが設定されない場合、前記DCIフォーマットにおける第一のフィールドは、第一のビット数で構成され、
前記第一の上位層パラメータが設定される場合、前記DCIフォーマットにおける前記第一のフィールドは、第二のビット数で構成され、
前記第一のフィールドと、前記DMRSのための1または複数のDMRSポートと、に基づいて、前記PTRSのためのPTRSポートが決定される通信方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/874,222 US20250365107A1 (en) | 2022-06-17 | 2023-06-08 | Terminal apparatus, base station apparatus, and communication method |
| EP23823820.8A EP4543125A4 (en) | 2022-06-17 | 2023-06-08 | TERMINAL DEVICE, BASE STATION DEVICE AND COMMUNICATION METHOD |
| CN202380047167.0A CN119366254A (zh) | 2022-06-17 | 2023-06-08 | 终端装置、基站装置以及通信方法 |
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| JP2022-097704 | 2022-06-17 | ||
| JP2022097704A JP2025108799A (ja) | 2022-06-17 | 2022-06-17 | 端末装置、基地局装置、および、通信方法 |
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| WO2023243529A1 true WO2023243529A1 (ja) | 2023-12-21 |
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| Country | Link |
|---|---|
| US (1) | US20250365107A1 (ja) |
| EP (1) | EP4543125A4 (ja) |
| JP (1) | JP2025108799A (ja) |
| CN (1) | CN119366254A (ja) |
| WO (1) | WO2023243529A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2022097704A (ja) | 2018-04-27 | 2022-06-30 | コニカミノルタ株式会社 | 放射線撮影システム |
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| KR102394214B1 (ko) * | 2017-08-10 | 2022-05-04 | 삼성전자 주식회사 | PTRS(Phase Tracking Reference Signal)를 할당하는 방법 및 장치 |
| GB2575872A (en) * | 2018-07-27 | 2020-01-29 | Samsung Electronics Co Ltd | Improvements in and relating to user equipment, UE, configuration |
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- 2023-06-08 WO PCT/JP2023/021340 patent/WO2023243529A1/ja not_active Ceased
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| JP2022097704A (ja) | 2018-04-27 | 2022-06-30 | コニカミノルタ株式会社 | 放射線撮影システム |
Non-Patent Citations (6)
| Title |
|---|
| "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT DOCOMO, 3GPP TSG RAN MEETING #71, 7 March 2016 (2016-03-07) |
| "Release 17 package for RAN", RP-193216, RAN CHAIRMAN, RAN1 CHAIRMAN, RAN2 CHAIRMAN, RAN3 CHAIRMAN, 3GPP TSG RAN MEETING #86, 9 December 2019 (2019-12-09) |
| "Release 18 package summary", RP-213469, RAN CHAIRMAN, RAN1 CHAIRMAN, RAN2 CHAIRMAN, RAN3 CHAIRMAN, 3GPP TSG RAN MEETING #94-E, 6 December 2021 (2021-12-06) |
| NTT DOCOMO, INC.: "Discussion on increased number of orthogonal DMRS ports", 3GPP TSG RAN WG1#109-E, R1-2204370, 29 April 2022 (2022-04-29), XP052153498 * |
| SAMSUNG: "Views on DMRS enhancements", 3GPP TSG RAN WG1 #109-ER1-2203891, 29 April 2022 (2022-04-29), XP052153230 * |
| See also references of EP4543125A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4543125A4 (en) | 2026-05-06 |
| EP4543125A1 (en) | 2025-04-23 |
| JP2025108799A (ja) | 2025-07-24 |
| CN119366254A (zh) | 2025-01-24 |
| US20250365107A1 (en) | 2025-11-27 |
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