WO2021107090A1 - Équipement terminal, dispositif de station de base et procédé - Google Patents

Équipement terminal, dispositif de station de base et procédé Download PDF

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Publication number
WO2021107090A1
WO2021107090A1 PCT/JP2020/044216 JP2020044216W WO2021107090A1 WO 2021107090 A1 WO2021107090 A1 WO 2021107090A1 JP 2020044216 W JP2020044216 W JP 2020044216W WO 2021107090 A1 WO2021107090 A1 WO 2021107090A1
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Prior art keywords
pusch
ptrs
upper layer
terminal device
uplinkconfig
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PCT/JP2020/044216
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English (en)
Japanese (ja)
Inventor
渉 大内
友樹 吉村
李　泰雨
会発 林
智造 野上
中嶋　大一郎
翔一 鈴木
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シャープ株式会社
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Priority to JP2021561540A priority Critical patent/JPWO2021107090A1/ja
Publication of WO2021107090A1 publication Critical patent/WO2021107090A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to terminal equipment, base station equipment, and methods.
  • the present application claims priority with respect to Japanese Patent Application No. 2019-215375 filed in Japan on November 28, 2019, the contents of which are incorporated herein by reference.
  • LTE Long Term Evolution
  • EUTRA Evolved Universal Terrestrial Radio Access
  • 3GPP Third Generation Partnership Project
  • LTE Long Term Evolution
  • UE User Equipment
  • LTE is a cellular communication system in which a plurality of areas covered by a base station apparatus are arranged in a cell shape.
  • One base station device may manage one or more serving cells.
  • NR New Radio
  • IMT International Mobile Telecommunication
  • ITU International Telecommunication Union
  • Non-Patent Document 1 NR is required to meet the requirements assuming three scenarios of eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication) within the framework of a single technology. There is.
  • Non-Patent Document 2 discloses NR wireless access technology.
  • One aspect of the present invention provides a terminal device for efficient communication, a method used for the terminal device, a base station device, and a method used for the base station device.
  • the first aspect of the present invention is a terminal device, which is a receiving unit that receives PTRS-UplinkConfig and DCI (Downlink Control Information) formats, and FDRA (Frequency) included in the PTRS-UplinkConfig and the DCI format.
  • a transmission unit that transmits PUSCH (Physical Uplink Shared Channel) and PT-RS (Phase Tracking Reference Signal) based on the value of the Domain Resource Assignment) field is provided, and the transmission unit is effective for modified recording.
  • PUSCH Physical Uplink Shared Channel
  • PT-RS Phase Tracking Reference Signal
  • the PT-RS is not transmitted and the value of the FDRA field is not transmitted.
  • the PT-RS is referred to as the PUSCH. Send with.
  • a second aspect of the present invention is a base station apparatus, which is a transmission unit that transmits a PTRS-UplinkConfig and a DCI (Downlink Control Information) format, and an FDRA included in the PTRS-UplinkConfig and the DCI format.
  • a receiving unit that receives PUSCH (Physical Uplink Shared Channel) and PT-RS (Phase Tracking Reference Signal) based on the value of the Frequency Domain Resource Assignment) field, and the receiving unit is effective for modified recording.
  • PUSCH Physical Uplink Shared Channel
  • PT-RS Phase Tracking Reference Signal
  • a third aspect of the present invention is a method used for a terminal device, which includes a step of receiving a PTRS-UplinkConfig and a DCI (Downlink Control Information) format, and the PTRS-UplinkConfig and the DCI format.
  • PUSCH Physical Uplink Shared Channel
  • PT-RS Phase Tracking Reference Signal
  • the step of not transmitting the PT-RS and the value of the FDRA field are set with respect to the PUSCH.
  • a fourth aspect of the present invention is a method used for a base station apparatus, in which a step of transmitting a PTRS-UplinkConfig and a DCI (Downlink Control Information) format and an FDRA included in the PTRS-UplinkConfig and the DCI format ( Based on the value of the FrequencyDomainResourceAssignment) field, the step of receiving PUSCH (Physical Uplink Shared Channel) and PT-RS (Phase Tracking Reference Signal), the setting that the modified recording is effective, and the coverage enhancement Includes a step of receiving the PUSCH on the assumption that the PUSCH contains the PT-RS, regardless of the bandwidth scheduled for the PUSCH when is set to be valid.
  • PUSCH Physical Uplink Shared Channel
  • PT-RS Phase Tracking Reference Signal
  • the terminal device can efficiently communicate.
  • the base station device can efficiently perform communication.
  • This is an example showing the relationship between the N slot symb , the SCS setting ⁇ , and the CP setting according to one aspect of the present embodiment.
  • It is a schematic diagram which shows an example of the resource grid in the subframe which concerns on one aspect of this Embodiment.
  • It is a figure which shows an example of the relationship between the PUCCH format and the length N PUCCH symb of the PUCCH format which concerns on one aspect of this embodiment.
  • It is a schematic block diagram which shows the structure of the terminal apparatus 1 which concerns on one aspect of this Embodiment.
  • FIG. 1 It is a schematic block diagram which shows the structure of the base station apparatus 3 which concerns on one aspect of this Embodiment.
  • I MCS scheduled MCS
  • N RB bandwidth
  • MCS index table 1 an example of the MCS index table
  • MCS index table 2 another example 1 of the MCS index table
  • FIG. 5 is a flow diagram showing a set of one or more time indexes l defined in connection with the start of a PDSCH arrangement according to one aspect of this embodiment. It is a figure which shows an example of the calculation formula used to assume the subcarrier k to which PT-RS which concerns on one Embodiment of this Embodiment is mapped. It is a figure which shows the correspondence relation of k RE ref which concerns on one aspect of this Embodiment. It is a table figure which shows ⁇ PUSCH PTRS which concerns on one aspect of this Embodiment.
  • FIG. 5 is a flow diagram showing a set of one or more time indexes l defined in relation to the start of a PUSCH arrangement when the modified recording according to one aspect of this embodiment is not valid. It is a figure which represents the calculation formula used to assume the subcarrier k to which PT-RS which concerns on one Embodiment of this Embodiment is mapped. It is a figure which shows the correspondence relation of k RE ref which concerns on one aspect of this Embodiment.
  • FIG. 5 is a flow diagram showing a set of one or more time indexes l defined in relation to the start of a PUSCH arrangement when the modified recording according to one aspect of this embodiment is not valid.
  • FIG. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment.
  • the wireless communication system includes terminal devices 1A to 1C and a base station device 3.
  • the terminal devices 1A to 1C may also be referred to as the terminal device 1.
  • the base station device 3 may include a communication device, a node, an NB (NodeB), an eNB, a gNB, a network device (core network, a gateway), and a part or all of an access point.
  • the terminal device 1 may be referred to as a UE (User equipment).
  • the eNB is a node that provides EUTRA user plane and control plane protocol termination for one or more terminal devices 1, and is particularly connected to a fifth generation core network (5GC) via an NG (Next Generation) interface.
  • the eNB to be generated is referred to as ng-eNB.
  • the gNB is a node that provides NR user plane and control plane protocol termination for one or more terminal devices 1, and is connected to 5GC via an NG interface.
  • the base station device 3 may constitute one or both of the MCG (Master Cell Group) and the SCG (Secondary Cell Group).
  • MCG is a group of serving cells composed of at least PCell (Primary Cell).
  • SCG is a group of serving cells including at least PSCell (Primary Secondary Cell).
  • the PCell may be a serving cell given based on the initial connection.
  • the MCG may be configured to include one or more SCells (Secondary Cells).
  • the SCG may be configured to include one or more SCells.
  • PCell and PSCell may be referred to as SpCell (Special Cell). It may be referred to as carrier aggregation to construct one CG by using one SpCell and one or a plurality of SCells and perform communication.
  • the MCG may consist of one or more serving cells on the EUTRA.
  • the SCG may be composed of one or more serving cells on the NR.
  • the MCG may be composed of one or more serving cells on the NR.
  • the SCG may be composed of one or more serving cells on the EUTRA.
  • the MCG and SCG may be composed of one or more serving cells of either EUTRA or NR.
  • EUTRA may mean that EUTRA RAT (Radio Access Technology) has been applied.
  • NR may mean that NR RAT has been applied.
  • the MCG may consist of one or more serving cells on the EUTRA. Further, the SCG may be composed of one or more serving cells on the NR-U. Further, the MCG may be composed of one or more serving cells on the NR. Further, the SCG may be composed of one or more serving cells on the NR-U. Further, the MCG may be composed of one or more serving cells of either EUTRA or NR or NR-U. Further, the SCG may be composed of one or more serving cells of either EUTRA or NR or NR-U.
  • the purpose of NR-U is to perform NR communication / access / service in a frequency band (operating band) that does not require a frequency license.
  • wireless LAN Wireless Local Area Network, Radio LAN
  • WAS Wireless Access Systems
  • IEEE802.11 Wireless Access
  • WiFi Wireless Access
  • FWA Wireless
  • LAA Licensed Assisted Access
  • NR aims to provide NR communication / access / service in a frequency band that requires a frequency license.
  • LTE is intended to provide LTE communication / access / service in a frequency band that requires a frequency license.
  • LAA aims to perform LTE communication / access / service in a frequency band that does not require a frequency license.
  • the operating bands (carrier frequency and frequency bandwidth) applied to each of EUTRA, NR, and NR-U may be individually defined (specified).
  • the MCG may be configured by the first base station device.
  • the SCG may be configured by a second base station device. That is, the PCell may be configured by the first base station apparatus.
  • the PSCell may be configured by a second base station device.
  • the first base station apparatus and the second base station apparatus may be the same as the base station apparatus 3, respectively.
  • the communication technology relating to coverage enhancement may be used to support a wide area (long distance) communication area (coverage), or between an outdoor base station device and an indoor terminal device. It may be used to improve the communication status, or may be used to improve the communication status between the indoor base station device and the indoor terminal device.
  • At least OFDM Orthogonal Frequency Division Multiplex
  • the OFDM symbol is a unit of the OFDM time domain.
  • the OFDM symbol comprises at least one or more subcarriers.
  • the OFDM symbol is converted into a time-continuous signal in the baseband signal generation.
  • CP-OFDM Cyclic Prefix-Orthogonal Frequency Division Multiplex
  • DFT-s-OFDM Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex
  • DFT-s-OFDM may be given by applying Transform precoding to CP-OFDM.
  • the SCS setting ⁇ may be set to any of 0, 1, 2, 3, 4, and / or 5.
  • the SCS setting ⁇ may be given by the parameters of the upper layer. That is, a value of ⁇ may be set for each BWP (for each downlink BWP, for each uplink BWP) regardless of the downlink and / or the uplink.
  • the time unit T c is used to express the length of the time domain.
  • ⁇ f max may be the maximum value of SCS supported in the wireless communication system according to one aspect of the present embodiment.
  • ⁇ f ref may be 15 kHz.
  • N f and ref may be 2048.
  • the constant ⁇ may be a value indicating the relationship between the reference SCS and T c.
  • the constant ⁇ may be used for the length of the subframe.
  • the number of slots contained in the subframe may be given, at least based on the constant ⁇ .
  • ⁇ f ref is a reference SCS, and N f and ref are values corresponding to the reference SCS.
  • the transmission of the signal on the downlink and / or the transmission of the signal on the uplink is composed of a frame of 10 ms.
  • the frame is composed of 10 subframes.
  • the length of the subframe is 1 ms.
  • the length of the frame may be given regardless of ⁇ f. That is, the frame setting may be given regardless of the value of ⁇ .
  • the length of the subframe may be given regardless of ⁇ f. That is, the subframe setting may be given regardless of ⁇ .
  • the number and index of slots contained in one subframe may be given.
  • the slot number n mu s is from 0 to N subframe in a subframe may be given in ascending order in the range of mu slot -1.
  • the number and index of slots contained in one frame may be given to the SCS setting ⁇ .
  • the slot numbers n ⁇ s and f may be given in ascending order in the range of 0 to N frame and ⁇ slot -1 in the frame.
  • One slot may contain consecutive N slot symbs of OFDM symbols.
  • the N slot symb may be given at least based on some or all of the CP (CyclicPrefix) settings.
  • the CP setting may be given at least based on the parameters of the upper layer.
  • CP settings may be given at least based on dedicated RRC signaling.
  • the slot number may be referred to as the slot index.
  • FIG. 2 is an example showing the relationship between the N slot symb , the SCS setting ⁇ , and the CP setting according to one aspect of the present embodiment.
  • NCP normal CP
  • ECP extended CP
  • An antenna port is defined by the fact that the channel through which a symbol is transmitted in one antenna port can be estimated from the channel in which another symbol is transmitted in the same antenna port. If the large scale property of the channel on which the symbol is transmitted on one antenna port can be estimated from the channel on which the symbol is transmitted on the other antenna port, the two antenna ports are QCL (Quasi Co-Located). ) May be referred to as.
  • Large scale characteristics may include at least the long interval characteristics of the channel. Large-scale characteristics include delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay), and beam parameters (spatial Rx parameters). It may include at least some or all.
  • the fact that the first antenna port and the second antenna port are QCL with respect to the beam parameters means that the receiving beam assumed by the receiving side with respect to the first antenna port and the receiving beam assumed by the receiving side with respect to the second antenna port. May be the same.
  • the fact that the first antenna port and the second antenna port are QCL with respect to the beam parameters means that the transmitting beam assumed by the receiving side with respect to the first antenna port and the transmitting beam assumed by the receiving side with respect to the second antenna port. May be the same.
  • the terminal device 1 assumes that the two antenna ports are QCLs when the large-scale characteristics of the channel through which the symbol is transmitted in one antenna port can be estimated from the channel in which the symbol is transmitted in the other antenna port. May be done.
  • the fact that the two antenna ports are QCLs may mean that the two antenna ports are QCLs.
  • N size, ⁇ grid, x N RB sc subcarriers and N subframe
  • a resource grid defined by mu symb OFDM symbols is given.
  • N size, ⁇ grid, x may indicate the number of resource blocks given for the SCS setting ⁇ for carrier x.
  • N size, ⁇ grid, x may indicate the bandwidth of the carrier.
  • N size, ⁇ grid, and x may be given by the upper layer parameter CarrierBandwidth included in the SCS-Specific Carrier information element. That is, N size, ⁇ grid, and x may be used to indicate the carrier bandwidth (number of resource blocks).
  • the carrier x may indicate either a downlink carrier or an uplink carrier.
  • NRB sc may indicate the number of subcarriers contained in one resource block. NRB sc may be 12. At least one resource grid may be provided for each antenna port p and / or for each SCS setting ⁇ and / or for each transmission direction setting.
  • the transmission direction includes at least downlink (DL) and uplink (UL).
  • DL downlink
  • UL uplink
  • a set of parameters including at least a part or all of the antenna port p, the SCS setting ⁇ , and the setting of the transmission direction may also be referred to as a first radio parameter set. That is, one resource grid may be given for each first set of radio parameters.
  • the radio parameter set may be one or more sets including one or more radio parameters (physical layer parameters or upper layer parameters).
  • the carrier included in the serving cell is referred to as a downlink carrier (or downlink component carrier).
  • the carrier included in the serving cell is referred to as an uplink carrier (uplink component carrier).
  • the downlink component carrier and the uplink component carrier may be collectively referred to as a component carrier (or carrier).
  • the type of serving cell may be any of PCell, PSCell, and SCell.
  • the PCell may be a serving cell that is identified at least based on the cell ID (physical layer cell ID, physical cell ID) acquired from the SSB (Synchronization signal / Physical broadcast channel block) at the initial connection.
  • the SCell may be a serving cell used in carrier aggregation (a serving cell that can be added after the initial connection and / or RRC connection of the PCell is established).
  • the SCell may be a serving cell given at least based on dedicated RRC signaling.
  • the SSB may be referred to as an SS / PBCH block.
  • Each element in the resource grid given for each first radio parameter set may be referred to as a resource element (RE).
  • the resource element is specified by the frequency domain index k sc and the time domain index l sym.
  • resource elements are identified by a frequency domain index k sc and a time domain index l sym.
  • the resource element specified by the frequency domain index k sc and the time domain index l sym may also be referred to as a resource element (k sc , l sym).
  • the frequency domain index k sc indicates any value from 0 to N ⁇ RB N RB sc -1.
  • N ⁇ RB may be the number of resource blocks given for the SCS setting ⁇ .
  • N ⁇ RB may be N size, ⁇ grid, x .
  • the frequency domain index k sc may correspond to the subcarrier index k sc.
  • the time domain index l sym may correspond to the OFDM symbol index l sym.
  • One or more resource elements may correspond to physical resources and complex values (complex value modulation symbols). Even if one or more information bits (control information, transport blocks, information bits for higher layer parameters) are mapped to each of one or more resource elements corresponding to physical resources and / or complex values. Good.
  • FIG. 3 is a schematic view showing an example of a resource grid in the subframe according to one aspect of the present embodiment.
  • the horizontal axis is the time domain index l sym
  • the vertical axis is the frequency domain index k sc .
  • the frequency domain of the resource grid contains N ⁇ RB N RB sc subcarriers.
  • the time domain of the resource grid may contain 14.2 ⁇ OFDM symbols.
  • One resource block is configured to include N RB sc subcarriers.
  • the time domain of the resource block may correspond to a 1 OFDM symbol.
  • the time domain of the resource block may correspond to 14 OFDM symbols.
  • the time domain of the resource block may correspond to one or more slots.
  • the time domain of the resource block may correspond to one subframe.
  • the terminal device 1 may be instructed to perform transmission / reception using only a subset of the resource grid.
  • a subset of the resource grid also referred to as BWP, may be given based on at least some or all of the upper layer parameters and / or DCI.
  • BWP may also be referred to as CBP (Carrier Bandwidth Part).
  • CBP Carrier Bandwidth Part
  • the terminal device 1 may not be instructed to perform transmission / reception using the entire set of resource grids.
  • the terminal device 1 may be instructed to perform transmission / reception using some frequency resources in the resource grid.
  • One BWP may be composed of a plurality of resource blocks in the frequency domain.
  • One BWP may be composed of a plurality of continuous resource blocks in the frequency domain.
  • the BWP set for the downlink carrier may also be referred to as a downlink BWP.
  • the BWP set for the uplink carrier may also be referred to as an uplink BWP.
  • the BWP may be a subset of the carrier's band (a subset of the frequency domain in the carrier).
  • One or more downlink BWPs may be set for each of the serving cells.
  • One or more uplink BWPs may be set for each of the serving cells.
  • one downlink BWP may be set as the active downlink BWP.
  • the downlink BWP switch is used to deactivate one active downlink BWP and activate an inactive downlink BWP other than the one active downlink BWP.
  • the switching of the downlink BWP may be controlled by the BWP field included in the downlink control information.
  • the switching of the downlink BWP may be controlled based on the parameters of the upper layer.
  • DL-SCH may be received in the active downlink BWP.
  • PDCCH may be monitored in the active downlink BWP.
  • PDSCH may be received in the active downlink BWP.
  • DL-SCH is not received in the inactive downlink BWP.
  • PDCCH is not monitored in the inactive downlink BWP.
  • No CSI for inactive downlink BWP is reported.
  • two or more downlink BWPs need not be set as the active downlink BWP.
  • one uplink BWP may be set as the active uplink BWP.
  • the uplink BWP switch is used to deactivate one active uplink BWP and activate an inactive uplink BWP other than the one active uplink BWP.
  • the switching of the uplink BWP may be controlled by the BWP field included in the downlink control information.
  • the switching of the uplink BWP may be controlled based on the parameters of the upper layer.
  • UL-SCH may be transmitted in the active uplink BWP.
  • PUCCH may be transmitted in the active uplink BWP.
  • PRACH may be transmitted in the active uplink BWP.
  • SRS may be transmitted in the active uplink BWP.
  • UL-SCH is not transmitted in the inactive uplink BWP.
  • PUCCH is not transmitted in the inactive uplink BWP.
  • PRACH is not transmitted in the inactive uplink BWP.
  • SRS is not transmitted in the inactive uplink BWP.
  • uplink BWPs set for one serving cell two or more uplink BWPs need not be set as active uplink BWPs. That is, only one active uplink BWP is required for the serving cell containing the uplink BWP.
  • the parameters of the upper layer are the parameters included in the signal of the upper layer.
  • the signal of the upper layer may be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Control Element).
  • the signal of the upper layer may be a signal of the RRC layer or a signal of the MAC layer.
  • the upper layer parameter given by the signal of the RRC layer may be notified from the base station device 3 to the terminal device 1 and set.
  • the signal of the upper layer may be common RRC signaling.
  • the common RRC signaling may include at least some or all of the following features C1 to C3. Feature C1) Map to BCCH logical channel or CCCH logical channel Feature C2) Map to Feature C3) PBCH containing at least the ConfigurationWithSync information element
  • the ReconfigurationWithSync information element may include information indicating a setting commonly used in the serving cell.
  • the settings commonly used in the serving cell may include at least the PRACH setting.
  • the PRACH setting may indicate at least one or more random access preamble indexes.
  • the PRACH setting may indicate at least the PRACH time / frequency resources.
  • the common RRC signaling may include at least the common RRC parameters.
  • the common RRC parameter may be a Cell-specific parameter commonly used within the serving cell.
  • the signal of the upper layer may be dedicated RRC signaling.
  • Dedicated RRC signaling may include at least some or all of the following features D1 to D2.
  • MIB Master Information Block
  • SIB System Information Block
  • the upper layer messages that are mapped to the DCCH logical channel and include at least the ReconnectionWithSync information element may be included in the common RRC signaling.
  • the upper layer message that is mapped to the DCCH logical channel and does not include the ReconnectionWithSync information element may be included in the dedicated RRC signaling.
  • the MIB and SIB may be collectively referred to as system information.
  • the upper layer parameter including one or more upper layer parameters may be referred to as an information element (IE).
  • IE information element
  • one or more upper layer parameters and / or upper layer parameters including one or more IEs and / or IEs include messages (upper layer messages, RRC messages), information blocks (IB), and system information. May be referred to.
  • the SIB may at least indicate the time index of the SSB.
  • the SIB may include at least information related to the PRACH resource.
  • the SIB may contain at least information related to the initial connection settings.
  • the ReconfigurationWithSync information element may include at least information related to the PRACH resource.
  • the ReconnectionWithSync information element may include at least information related to the initial connection settings.
  • Dedicated RRC signaling may include at least dedicated RRC parameters.
  • the dedicated RRC parameter may be a (UE-specific) parameter dedicated to the terminal device 1.
  • Dedicated RRC signaling may include at least common RRC parameters.
  • the common RRC parameter and the dedicated RRC parameter may also be referred to as upper layer parameters.
  • the uplink physical channel may correspond to a set of resource elements that carry information that occurs in the upper layers.
  • the uplink physical channel is a physical channel used in the uplink carrier. In the wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical channels are used.
  • ⁇ PUCCH Physical Uplink Control CHannel
  • PUSCH Physical Uplink Shared CHannel
  • PRACH Physical Random Access CHannel
  • the PUCCH may be used to transmit uplink control information (UCI).
  • the uplink control information includes a part or all of HARQ-ACK (Hybrid Automatic Repeat request ACK knowledgement) information corresponding to the channel state information (CSI), scheduling request (SR), and transport block (TB).
  • CSI channel state information
  • SR scheduling request
  • TB transport block
  • the TB may be referred to as MAC PDU (Medium Access Control Protocol Data Unit), DL-SCH (Downlink-Shared Channel) or PDSCH (Physical Downlink Shared Channel).
  • MAC PDU Medium Access Control Protocol Data Unit
  • DL-SCH Downlink-Shared Channel
  • PDSCH Physical Downlink Shared Channel
  • One or more types of uplink control information may be multiplexed on the PUCCH.
  • the multiplexed PUCCH may be transmitted. That is, a plurality of HARQ-ACKs may be multiplexed, a plurality of CSIs may be multiplexed, a plurality of SRs may be multiplexed, and HARQ-ACK and CSI may be multiplexed in the PUCCH.
  • HARQ-ACK and SR may be multiplexed, or may be multiplexed with other UCI types.
  • the HARQ-ACK information may include at least the HARQ-ACK bit corresponding to TB.
  • the HARQ-ACK bit may indicate ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to TB.
  • ACK may be a value indicating that the decoding of the TB has been successfully completed.
  • NACK may be a value indicating that the decoding of the TB has not been completed successfully.
  • the HARQ-ACK information may include at least one HARQ-ACK codebook containing one or more HARQ-ACK bits. The fact that the HARQ-ACK bit corresponds to one or more TBs may mean that the HARQ-ACK bit corresponds to a PDSCH containing the one or more TBs.
  • the HARQ-ACK bit may indicate ACK or NACK corresponding to one CBG (Code Block Group) included in TB.
  • HARQ-ACK may also be referred to as HARQ feedback, HARQ information, and HARQ control information.
  • the SR may at least be used to request PUSCH resources for initial transmission.
  • the SR may also be used to request UL-SCH resources for new transmissions.
  • the SR bit may be used to indicate either a positive SR (positive SR) or a negative SR (negative SR).
  • the fact that the SR bit indicates a positive SR may also be referred to as "a positive SR is transmitted".
  • a positive SR may indicate that the terminal device 1 requires PUSCH resources for initial transmission.
  • a positive SR may indicate that the SR is triggered by an upper layer.
  • the positive SR may be transmitted when the upper layer instructs the SR to be transmitted.
  • the fact that the SR bit indicates a negative SR may also be referred to as "a negative SR is transmitted”.
  • a negative SR may indicate that the terminal device 1 does not require PUSCH resources for initial transmission.
  • a negative SR may indicate that the SR is not triggered by the upper layer. Negative SR may be transmitted if the upper layer does
  • the SR bit may be used to indicate either a positive SR or a negative SR for any one or more SR configurations.
  • Each of the one or more SR settings may correspond to one or more logical channels.
  • a positive SR for an SR setting may be a positive SR for any or all of one or more logical channels corresponding to that SR setting.
  • Negative SR does not have to correspond to a particular SR setting. Showing a negative SR may mean showing a negative SR for all SR settings.
  • the SR setting may be SR-ID (Scheduling Request ID).
  • the SR-ID may be given by the parameters of the upper layer.
  • the CSI may include at least some or all of the Channel Quality Index (CQI), Precoder Matrix Index (PMI), and Rank Index (RI).
  • CQI is an index related to channel quality (for example, propagation intensity)
  • PMI is an index indicating a precoder.
  • RI is an index that indicates the transmission rank (or the number of transmission layers).
  • the CSI may be given at least on the basis of receiving at least a physical signal (eg, CSI-RS) used for channel measurement.
  • the CSI may include a value selected by the terminal device 1.
  • the CSI may be selected by terminal device 1 at least based on receiving the physical signal used for channel measurement.
  • the channel measurement may include an interference measurement.
  • the CSI-RS may be set based on the CSI-RS setting or may be set based on the SSB setting.
  • the CSI report is a CSI report.
  • the CSI report may include CSI Part 1 and / or CSI Part 2.
  • CSI Part 1 may be configured to include at least some or all of the Broadband Channel Quality Information (wideband CQI), Wideband Precoder Matrix Index (wideband PMI), and RI.
  • the number of bits of the CSI part 1 multiplexed on the PUCCH may be a predetermined value regardless of the RI value of the CSI report.
  • the number of bits of the CSI part 2 to be multiplexed on the PUCCH may be given based on the RI value of the CSI report.
  • the rank index of the CSI report may be the value of the rank index used for calculating the CSI report.
  • the RI of the CSI information may be the value indicated by the RI field included in the CSI report.
  • the set of RIs allowed in the CSI report may be part or all of 1-8. Also, the set of RIs allowed in the CSI report may be given at least based on the upper layer parameter RankReaction. If the set of RIs allowed in a CSI report contains only one value, the RI in the CSI report may be that one value.
  • the CSI report priority is the setting for the behavior (processing) of the CSI report time domain, the type of content of the CSI report, the index of the CSI report, and / or the serving cell in which the measurement of the CSI report is set. It may be given at least on the basis of part or all of the index.
  • the time domain behavior (processing) of the CSI report can be set so that the CSI report is aperiodic, the CSI report is semi-persistent, or quasi-static. It may be a setting indicating either of the above.
  • the type of content in the CSI report may indicate whether the CSI report includes Layer 1 RSRP (Reference Signals Received Power).
  • the index of the CSI report may be given by the parameters of the upper layer.
  • PUCCH supports one or more PUCCH formats (PUCCH format 0 to PUCCH format 4).
  • the PUCCH format may be transmitted in PUCCH.
  • the transmission of the PUCCH format may mean that the PUCCH is transmitted.
  • FIG. 4 is a diagram showing an example of the relationship between the PUCCH format and the length N PUCCH symb of the PUCCH format according to one aspect of the present embodiment.
  • the length N PUCCH symb of PUCCH format 0 is a 1 or 2 OFDM symbol.
  • the length N PUCCH symb of PUCCH format 1 is one of 4 to 14 OFDM symbols.
  • the length N PUCCH symb of PUCCH format 2 is a 1 or 2 OFDM symbol.
  • the length N PUCCH symb of PUCCH format 3 is one of 4 to 14 OFDM symbols.
  • the length N PUCCH symb of PUCCH format 4 is one of 4 to 14 OFDM symbols.
  • PUSCH is at least used to transmit TB (MAC PDU, UL-SCH).
  • PUSCH may be used to transmit at least some or all of TB, HARQ-ACK information, CSI, and SR.
  • PUSCH is at least used to send a random access message 3 (message 3 (Msg3)) corresponding to the RAR (Msg2) and / or RAR grant in the random access procedure.
  • the TB may correspond to each of the uplink and the downlink. That is, the PUSCH may be used to transmit the TB to the uplink.
  • the PDSCH may be used to transmit a TB to the downlink.
  • PRACH is at least used to transmit a random access preamble (random access message 1, message 1 (Msg1)).
  • the PRACH is an initial connection establishment procedure, a handover procedure, a connection re-establishment procedure, an initial access procedure, synchronization (timing adjustment) for PUSCH transmission, and resource request for PUSCH. It may be used at least to indicate part or all.
  • the random access preamble may be used to notify the base station device 3 of an index (random access preamble index) given by the upper layer of the terminal device 1.
  • the random access preamble may be given by cyclically shifting the Zadoff-Chu sequence corresponding to the physical route sequence index u.
  • the Zadoff-Chu sequence may be generated based on the physical route sequence index u.
  • a plurality of random access preambles may be defined in one serving cell.
  • the random access preamble may be specified at least based on the index of the random access preamble. Different random access preambles corresponding to different indexes of the random access preamble may correspond to different combinations of physical route sequence index u and cyclic shift.
  • the physical route sequence index u and cyclic shift may be given at least based on the information contained in the system information.
  • the physical route sequence index u may be an index that identifies a series included in the random access preamble.
  • the random access preamble may be specified at least based on the physical route sequence index u.
  • the following uplink physical signals are used in uplink wireless communication.
  • the uplink physical signal does not have to be used to transmit the information output from the upper layer, but it is used by the physical layer.
  • ⁇ UL DMRS UpLink Demodulation Reference Signal
  • SRS Sounding Reference Signal
  • UL PTRS UpLink Phase Tracking Reference Signal
  • UL DMRS is associated with PUSCH and / or PUCCH transmission.
  • UL DMRS is multiplexed with PUSCH or PUCCH.
  • the base station apparatus 3 may use UL DMRS to correct the propagation path of PUSCH or PUCCH.
  • transmitting both the PUSCH and the UL DMRS related to the PUSCH is referred to simply as transmitting the PUSCH.
  • transmitting PUCCH and UL DMRS related to the PUCCH together is referred to simply as transmitting PUCCH.
  • UL DMRS related to PUSCH is also referred to as UL DMRS for PUSCH.
  • UL DMRS related to PUCCH is also referred to as UL DMRS for PUCCH.
  • SRS does not have to be related to PUSCH or PUCCH transmission.
  • the base station apparatus 3 may use SRS for measuring the channel state.
  • SRS may be transmitted in uplink slots, subframes, or a predetermined number of OFDM symbols from the end of UpPTS.
  • the UL PTRS may be at least a reference signal used for phase tracking.
  • the UL PTRS may be associated with a UL DMRS group that includes at least the antenna ports used for one or more UL DMRSs.
  • the association between the UL PTRS and the UL DMRS group may be that the antenna port of the UL PTRS and a part or all of the antenna ports included in the UL DMRS group are at least QCL.
  • the UL DMRS group may be identified at least based on the antenna port with the smallest index in the UL DMRS included in the UL DMRS group.
  • UL PTRS may be mapped to the antenna port with the smallest index in one or more antenna ports to which one codeword is mapped.
  • UL PTRS may be mapped to the first layer if one codeword is at least mapped to the first layer and the second layer. UL PTRS does not have to be mapped to the second layer.
  • the index of the antenna port to which the UL PTRS is mapped may be given at least based on the downlink control information.
  • the following downlink physical channels are used in the downlink wireless communication from the base station device 3 to the terminal device 1.
  • the downlink physical channel is used by the physical layer to transmit the information output from the upper layer.
  • ⁇ PBCH Physical Broadcast Channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • the PBCH is at least used to transmit the MIB and / or the PBCH payload.
  • the PBCH payload may include at least information indicating an index regarding the transmission timing (SSB occupation) of the SSB.
  • the PBCH payload may include information related to the SSB identifier (index).
  • PBCH may be transmitted based on a predetermined transmission interval. PBCH may be transmitted at intervals of 80 milliseconds (ms). PBCH may be transmitted at intervals of 160 ms. The content of the information contained in the PBCH may be updated every 80 ms. Part or all of the information contained in the PBCH may be updated every 160 ms.
  • the PBCH may be composed of 288 subcarriers.
  • the PBCH may be configured to include 2, 3, or 4 OFDM symbols.
  • the MIB may include information related to the SSB identifier (index).
  • the MIB may include information indicating at least a portion of the slot number, subframe number, and / or radio frame number through which the PBCH is transmitted.
  • PDCCH is at least used for transmitting downlink control information (DCI).
  • DCI downlink control information
  • PDCCH may be transmitted including at least DCI.
  • DCI may also be referred to as DCI format.
  • the DCI may at least indicate either a downlink grant or an uplink grant.
  • the DCI format used for PDSCH scheduling may also be referred to as the downlink DCI format and / or the downlink grant.
  • the DCI format used for PUSCH scheduling may also be referred to as the uplink DCI format and / or the uplink grant.
  • Downlink grants may also be referred to as downlink assignments or downlink assignments.
  • the uplink DCI format includes at least one or both of DCI format 0_0 and DCI format 0_1.
  • the DCI format 0_0 may be configured to include at least a part or all of 1A to 1J.
  • 1A may be at least used to indicate whether the DCI format containing the 1A corresponds to one or more DCI formats.
  • the one or more DCI formats may be given at least on the basis of DCI format 1_1, DCI format 1-11, DCI format 0_0, and / or part or all of DCI format 0_1.
  • 1B may at least be used to indicate the allocation of frequency resources for PUSCH scheduled by the DCI format containing the 1B.
  • 1C may at least be used to indicate the allocation of time resources for PUSCH scheduled by the DCI format containing the 1C.
  • 1D may at least be used to indicate whether frequency hopping is applied to the PUSCH scheduled by the DCI format containing the 1D.
  • the 1E may be at least used to indicate a modulation scheme for PUSCH scheduled by the DCI format containing the 1E and / or part or all of the target code rate.
  • the target code rate may be the target code rate for the TB of the PUSCH.
  • the size of the TB (TBS) may be given at least based on the target code rate.
  • 1F is at least used to direct CSI reporting.
  • the size of 1F may be a predetermined value.
  • the size of 1F may be 0, 1, may be 2, or may be 3.
  • the size of the 1st floor may be determined according to the number of CSI settings set in the terminal device 1.
  • 1G is used to indicate whether the PUSCH transmission corresponding to 1I scheduled by the DCI format is a new transmission or a retransmission, based on whether the value of the 1G is toggled. If the value of the 1G is toggled, the PUSCH corresponding to the 1I is a new transmission, otherwise the PUSCH corresponding to the 1I is a retransmission.
  • the 1G may be a DCI indicating whether the base station apparatus 3 requests the retransmission of the PUSCH corresponding to the 1I.
  • 1H is used to indicate the start position of the PUSCH bitstream scheduled by the DCI format.
  • 1I is used by the PUSCH scheduled by the DCI format to indicate the corresponding HARQ process number (HPID).
  • 1J is used to adjust the PUSCH transmission power scheduled by the DCI format.
  • DCI format 0-1 is configured to include at least part or all of 2A to 2K.
  • the BWP field may be used to indicate the uplink BWP to which the PUSCH scheduled in DCI format 0_1 is mapped.
  • the CSI request field is at least used to direct CSI reporting.
  • the size of the CSI request field may be given at least based on the upper layer parameter ReportTriggerSize.
  • the downlink DCI format includes at least one or both of DCI format 1_0 and DCI format 1_1.
  • DCI format 1_0 may be configured to include at least part or all of 3A to 3L.
  • 3B to 3E may be used for PDSCH scheduled by the DCI format.
  • 3G may be a field indicating timing K1.
  • the index of the slot containing the last OFDM symbol of the PDSCH is slot n
  • the index of the PUCCH containing at least HARQ-ACK corresponding to the TB contained in the PDSCH or the slot containing the PUSCH may be n + K1.
  • the index of the slot containing the last OFDM symbol of the PDSCH is slot n
  • the first OFDM symbol of the PUCCH containing at least the HARQ-ACK corresponding to the TB contained in the PDSCH or the first OFDM symbol of the PUSCH is included.
  • the slot index may be n + K1.
  • 3H may be a field indicating the index of one or more PUCCH resources included in the PUCCH resource set.
  • 3I is used to indicate whether the 3K corresponding PDSCH transmission scheduled by the DCI format is a new transmission or a retransmission, based on whether the value of the 3I is toggled. If the value of the 3K is toggled, the PDSCH corresponding to the 3K is a new transmission, otherwise the PDSCH corresponding to the 3K is a retransmission.
  • 3J may be used to indicate the start position of the PDSCH bitstream scheduled by the DCI format.
  • 3K may be used to indicate the number of the HARQ process to which the PDSCH scheduled by the DCI format corresponds.
  • 3L may be used to adjust the transmission power of the PUCCH corresponding to the PDSCH scheduled by the DCI format.
  • the DCI format 1-11 may be configured to include at least a part or all of 4A to 4M.
  • 3A, 4A, like 1A and 2A, are used to identify the DCI format.
  • 4B-4E may be used for PDSCH scheduled by the DCI format.
  • 4I may be used to indicate the downlink BWP to which the PDSCH scheduled in DCI format 1-11 is mapped.
  • Each DCI format may include padding bits to fit a predetermined bit size (payload size).
  • DCI format 2 may include parameters used for PUSCH or PUCCH transmission power control.
  • the number of resource blocks indicates the number of resource blocks in the frequency domain.
  • the index of the resource block is assigned in ascending order from the resource block mapped to the low frequency domain to the resource block mapped to the high frequency domain.
  • the resource block is a general term for a common resource block and a physical resource block.
  • One physical channel may be mapped to one serving cell.
  • One physical channel may be mapped to one CBP set for one carrier contained in one serving cell.
  • the terminal device 1 is given one or more control resource sets (CORESET).
  • the terminal device 1 monitors the PDCCH in one or more CORESETs.
  • CORESET may indicate a time-frequency region in which one or more PDCCHs can be mapped.
  • CORESET may be an area in which the terminal device 1 monitors PDCCH.
  • CORESET may be composed of continuous resources (localized resource (s), continuous resource (s)).
  • CORESET may be composed of discontinuous resources (distributed resource (s), discontiguous resource (s)).
  • the unit of CORESET mapping may be a resource block (RB).
  • the unit of CORESET mapping may be 6 resource blocks. That is, the mapping of the frequency domain of CORESET may be performed by 6RB ⁇ n (n is 1, 2, ).
  • the unit of CORESET mapping may be an OFDM symbol.
  • the unit of CORESET mapping may be one OFDM symbol.
  • the frequency domain of CORESET may be given at least based on the signal of the upper layer and / or DCI.
  • the time domain of CORESET may be given at least based on the signal of the upper layer and / or DCI.
  • a certain CORESET may be a common CORESET (Common CORESET).
  • the common CORESET may be a CORESET that is commonly set for a plurality of terminal devices 1.
  • the common CORESET may be given at least based on the MIB, SIB, common RRC signaling, and part or all of the cell ID. For example, a CORESET time resource and / or frequency resource that is set to monitor the PDCCH used for SIB scheduling may be given at least based on the MIB.
  • a certain CORESET may be a dedicated CORESET (Dedicated CORESET).
  • the dedicated CORESET may be a CORESET that is set to be used exclusively for the terminal device 1.
  • Dedicated CORESET may be given at least on the basis of dedicated RRC signaling.
  • the set of PDCCH candidates monitored by the terminal device 1 may be defined from the viewpoint of the search area. That is, the set of PDCCH candidates monitored by the terminal device 1 may be given by the search area.
  • the search area may be configured to include one or more PDCCH candidates of one or a plurality of aggregation levels (Aggregation level).
  • the aggregation level of PDCCH candidates may indicate the number of CCEs constituting the PDCCH.
  • the terminal device 1 may monitor at least one or a plurality of search areas in a slot in which DRX (Discontinuous reception) is not set. DRX may be given at least based on the parameters of the upper layer. The terminal device 1 may monitor at least one or a plurality of search area sets (Search space sets) in slots in which DRX is not set.
  • DRX discontinuous reception
  • the terminal device 1 may monitor at least one or a plurality of search area sets (Search space sets) in slots in which DRX is not set.
  • the search area set may be configured to include at least one or a plurality of search areas.
  • the types of the search area set are type 0PDCCH common search area (common search space), type 0a PDCCH common search area, type 1 PDCCH common search area, type 2 PDCCH common search area, type 3 PDCCH common search area, and / or UE individual PDCCH search. It may be any of the regions.
  • the type 0PDCCH common search area, the type 0aPDCCH common search area, the type 1PDCCH common search area, the type 2PDCCH common search area, and the type 3PDCCH common search area may also be referred to as CSS (Common Search Space).
  • the UE individual PDCCH search area may also be referred to as USS (UE specific Search Space).
  • Each of the search area sets may be associated with one control resource set.
  • Each of the search area sets may be included in at least one control resource set.
  • an index of the control resource set associated with the search area set may be given.
  • the type 0PDCCH common search area may be at least used for DCI formats with CRC (Cyclic Redundancy Check) sequences scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier).
  • the setting of the type 0 PDCCH common search area may be given at least based on 4 bits of the LSB (Least Significant Bits) of the upper layer parameter PDCCH-ConfigSIB1.
  • the upper layer parameter PDCCH-ConfigSIB1 may be included in the MIB.
  • the setting of the type 0PDCCH common search area may be given at least based on the parameter SearchSpaceZero of the upper layer.
  • the interpretation of the bits of the upper layer parameter SearchSpaceZero may be the same as the interpretation of the LSB of the upper layer parameter PDCCH-ConfigSIB1.
  • the setting of the type 0PDCCH common search area may be given at least based on the parameter SearchSpaceSIB1 of the upper layer.
  • the upper layer parameter SearchSpaceSIB1 may be included in the upper layer parameter PDCCH-ConfigCommon.
  • the PDCCH detected in the type 0 PDCCH common search area may be at least used for scheduling the PDSCH transmitted including the SIB1.
  • SIB1 is a kind of SIB.
  • SIB1 may include scheduling information of SIB other than SIB1.
  • the terminal device 1 may receive the parameter PDCCH-ConfigCommon of the upper layer in EUTRA.
  • the terminal device 1 may receive the parameter PDCCH-ConfigCommon of the upper layer in the MCG.
  • the type 0aPDCCH common search area may be at least used for DCI formats with CRC (Cyclic Redundancy Check) sequences scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier).
  • the setting of the type 0aPDCCH common search region may be given at least based on the upper layer parameter SearchSpaceOtherSystemInformation.
  • the upper layer parameter SearchSpaceOtherSystemInformation may be included in SIB1.
  • the upper layer parameter SearchSpaceOtherSystemInformation may be included in the upper layer parameter PDCCH-ConfigCommon.
  • the PDCCH detected in the type 0 PDCCH common search area may be at least used for scheduling PDSCHs transmitted including SIBs other than SIB1.
  • the Type 1 PDCCH common search region is accompanied by a CRC sequence scrambled by RA-RNTI (Random Access-Radio Network Temporary Identifier) and / or a CRC sequence scrambled by TC-RNTI (Temporary Common-Radio Network Temporary Identifier). It may be at least used for the DCI format.
  • RA-RNTI may be given at least based on the time / frequency resources of the random access preamble transmitted by terminal device 1.
  • TC-RNTI is provided by PDSCH (also referred to as Random Access Message 2, Message 2 (Msg2), or Random Access Response (RAR)) scheduled by the DCI format with a CRC sequence scrambled by RA-RNTI. May be done.
  • the type 1 PDCCH common search region may be given at least based on the parameter ra-SearchSpace of the upper layer.
  • the upper layer parameter ra-SearchSpace may be included in SIB1.
  • the upper layer parameter ra-SearchSpace may be included in the upper layer parameter PDCCH-ConfigCommon.
  • the Type 2 PDCCH common search area may be used for DCI formats with CRC sequences scrambled by P-RNTI (Paging-Radio Network Temporary Identifier).
  • P-RNTI may at least be used for transmission of DCI format containing information notifying SIB changes.
  • the type 2 PDCCH common search region may be provided at least based on the parameter PagingSearchSpace of the upper layer.
  • the upper layer parameter PagingSearchSpace may be included in SIB1.
  • the upper layer parameter PagingSearchSpace may be included in the upper layer parameter PDCCH-ConfigCommon.
  • the Type 3 PDCCH common search area may be used for DCI formats with CRC sequences scrambled by C-RNTI (Cell-Radio Network Temporary Identifier).
  • C-RNTI Cell-Radio Network Temporary Identifier
  • C-RNTI is on a PDSCH (also referred to as Random Access Message 4, Message 4 (Msg4), or Contention Resolution) scheduled by the DCI format with a CRC sequence scrambled by TC-RNTI. It may be given at least on the basis.
  • the type 3 PDCCH common search area may be a search area set given when the parameter SearchSpaceType of the upper layer is set to common.
  • the UE-individual PDCCH search region may be at least used for DCI formats with CRC sequences scrambled by C-RNTI.
  • the type 0PDCCH common search area, the type 0aPDCCH common search area, the type 1PDCCH common search area, and / or the type 2PDCCH common search area are CRC scrambled by C-RNTI. It may be used at least for DCI formats with sequences.
  • the upper layer parameter PDCCH-ConfigSIB1, the upper layer parameter SearchSpaceZero, the upper layer parameter SearchSpaceSIB1, the upper layer parameter SearchSpaceOtherSystemInformation, the upper layer parameter rase The search region set given at least based on any of the parameters PagingSearchSpace may be used at least for DCI formats with CRC sequences scrambled with C-RNTI.
  • the common CORESET may include at least one or both of CSS and USS.
  • the dedicated CORESET may include at least one or both of CSS and USS.
  • the physical resource of the search area is composed of one or more control channel elements (CCE).
  • CCE is composed of 6 resource element groups (REG).
  • the REG may be composed of one OFDM symbol of one PRB (Physical Resource Block). That is, the REG may be configured to include 12 resource elements (RE: ResourceElement).
  • the PRB may also be simply referred to as a resource block (RB).
  • the PDSCH is at least used to transmit TB.
  • the PDSCH may also be at least used to transmit a random access message 2 (RAR, Msg2).
  • RAR, Msg2 random access message 2
  • the PDSCH may also be at least used to transmit system information, including parameters used for initial access.
  • the following downlink physical signals are used in downlink wireless communication.
  • the downlink physical signal does not have to be used to transmit the information output from the upper layer, but it is used by the physical layer.
  • -Synchronization signal ⁇ DL DMRS (DownLink DeModulation Reference Signal)
  • CSI-RS Channel State Information-Reference Signal
  • DL PTRS DownLink Phase Tracking Reference Signal
  • TRS Track Reference Signal
  • the synchronization signal is used by the terminal device 1 to synchronize the downlink frequency domain and / or the time domain.
  • the synchronization signal includes PSS (PrimarySynchronizationSignal) and SSS (SecondarySynchronizationSignal).
  • SSB (SS / PBCH block) is composed of PSS, SSS, and at least a part or all of PBCH.
  • the antenna ports of PSS, SSS, and a part or all of PBCH included in the SS block may be the same.
  • Some or all of the PSS, SSS, and PBCH contained in the SSB may be mapped to consecutive OFDM symbols.
  • the CP settings of PSS, SSS, and part or all of PBCH contained in SSB may be the same. The same value may be applied to the SCS setting ⁇ for each of PSS, SSS, and a part or all of PBCH contained in SSB.
  • DL DMRS is associated with the transmission of PBCH, PDCCH, and / or PDSCH.
  • DL DMRS is multiplexed on PBCH, PDCCH, and / or PDSCH.
  • the terminal device 1 may use the PBCH, the PDCCH, or the DL DMRS corresponding to the PDSCH to correct the propagation path of the PBCH, PDCCH, or PDSCH.
  • the transmission of PBCH and DL DMRS related to the PBCH together may be referred to as transmission of PBCH.
  • the transmission of the PDCCH and the DL DMRS associated with the PDCCH together may be referred to simply as the transmission of the PDCCH.
  • the transmission of the PDSCH and the DL DMRS related to the PDSCH together may be referred to simply as the PDSCH being transmitted.
  • DL DMRS related to PBCH may also be referred to as DL DMRS for PBCH.
  • the DL DMRS associated with the PDSCH may also be referred to as the PDSCH DL DMRS.
  • DL DMRS associated with PDCCH may also be referred to as DL DMRS associated with PDCCH.
  • the DL DMRS may be a reference signal individually set in the terminal device 1.
  • the DL DMRS sequence may be given at least based on parameters individually set in the terminal device 1.
  • the DL DMRS sequence may be given at least based on UE-specific values (eg, C-RNTI, etc.).
  • DL DMRS may be transmitted individually for PDCCH and / or PDSCH.
  • CSI-RS may be at least a signal used to calculate CSI. Further, CSI-RS may be used for measuring RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality). The pattern of CSI-RS assumed by the terminal device 1 may be given by at least the parameters of the upper layer.
  • the DL PTRS may be at least a signal used for compensating for phase noise.
  • the DL PTRS pattern assumed by the terminal device 1 may be given at least based on the parameters of the upper layer and / or DCI.
  • the DL PTRS may be associated with a DL DMRS group that includes at least the antenna ports used for one or more DL DMRSs.
  • the association between the DL PTRS and the DL DMRS group may be that the antenna port of the DL PTRS and a part or all of the antenna ports included in the DL DMRS group are at least QCL.
  • the DL DMRS group may be identified based on at least the antenna port having the smallest index in the DL DMRS included in the DL DMRS group.
  • the TRS may be at least a signal used for time and / or frequency synchronization.
  • the pattern of TRS assumed by the terminal device may be given at least based on the parameters of the upper layer and / or DCI.
  • the downlink physical channel and the downlink physical signal may also be referred to as a downlink physical signal.
  • the uplink physical channel and the uplink physical signal may also be referred to as an uplink signal.
  • the downlink signal and the uplink signal may be collectively referred to as a physical signal or a signal.
  • the downlink physical channel and the uplink physical channel may be collectively referred to as a physical channel.
  • the physical signal may include a part or all of SSB, PDCCH (CORESET), PDSCH, DL DMRS, CSI-RS, DL PTRS, and TRS.
  • the physical signal may include a part or all of PRACH, PUCCH, PUSCH, UL DMRS, UL PTRS, and SRS.
  • the physical signal may be a signal other than the above-mentioned signal. That is, the physical signal may include one or more types of physical channels and / or physical signals, or may include one or more physical channels and / or physical signals.
  • BCH Broadcast CHannel
  • UL-SCH Uplink-Shared CHannel
  • DL-SCH Downlink-Shared CHannel
  • HARQ is controlled for each TB in the MAC layer.
  • TB is a unit of data delivered by the MAC layer to the physical layer. In the physical layer, TB is mapped to codewords, and modulation processing is performed for each codeword.
  • the base station device 3 and the terminal device 1 exchange (transmit / receive) signals of the upper layer in the upper layer.
  • the base station device 3 and the terminal device 1 may transmit and receive RRC signaling (RRC message, RRC information, RRC parameter, RRC information element) in the radio resource control (RRC) layer.
  • RRC signaling RRC message, RRC information, RRC parameter, RRC information element
  • RRC CE Control Element
  • RRC signaling and / or MAC CE is also referred to as higher layer signaling.
  • the PUSCH and PDSCH may at least be used to transmit RRC signaling and / or MAC CE.
  • the RRC signaling transmitted from the base station device 3 by PDSCH may be a signal common to a plurality of terminal devices 1 in the serving cell. Signaling common to a plurality of terminal devices 1 in the serving cell may also be referred to as common RRC signaling.
  • the RRC signaling transmitted from the base station device 3 via PDSCH may be dedicated signaling (also referred to as dedicated signaling or UE specific signaling) to a certain terminal device 1.
  • the signaling dedicated to the terminal device 1 may also be referred to as dedicated RRC signaling.
  • the parameters of the upper layer unique to the serving cell may be transmitted by using common signaling to a plurality of terminal devices 1 in the serving cell or by using dedicated signaling to a certain terminal device 1.
  • UE-specific upper layer parameters may be transmitted to a terminal device 1 using dedicated signaling.
  • BCCH Broadcast Control Channel
  • CCCH Common Control Channel
  • DCCH Dedicated Control Channel
  • BCCH is a higher layer channel used to transmit MIBs.
  • CCCH Common Control CHannel
  • DCCH is an upper layer channel used for transmitting common information in a plurality of terminal devices 1.
  • CCCH may be used, for example, for a terminal device 1 that is not RRC-connected.
  • the DCCH (Dedicated Control Channel) is an upper layer channel that is at least used for transmitting dedicated control information to the terminal device 1.
  • the DCCH may be used, for example, for the terminal device 1 connected by RRC.
  • BCCH in the logical channel may be mapped to BCH, DL-SCH, or UL-SCH in the transport channel.
  • CCCH on the logical channel may be mapped to DL-SCH or UL-SCH on the transport channel.
  • DCCH on the logical channel may be mapped to DL-SCH or UL-SCH on the transport channel.
  • UL-SCH in the transport channel may be mapped to PUSCH in the physical channel.
  • the DL-SCH in the transport channel may be mapped to the PDSCH in the physical channel.
  • BCH in the transport channel may be mapped to PBCH in the physical channel.
  • FIG. 5 is a schematic block diagram showing the configuration of the terminal device 1 according to one aspect of the present embodiment.
  • the terminal device 1 includes a wireless transmission / reception unit 10 and an upper layer processing unit 14.
  • the radio transmission / reception unit 10 includes at least a part or all of an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13.
  • the upper layer processing unit 14 includes at least a part or all of the medium access control layer processing unit 15 and the radio resource control layer processing unit 16.
  • the wireless transmission / reception unit 10 may also be referred to as a transmission unit, a reception unit, a physical layer processing unit, and / or a lower layer processing unit.
  • the upper layer processing unit 14 outputs the uplink data (TB, UL-SCH) generated by the user's operation or the like to the wireless transmission / reception unit 10.
  • the upper layer processing unit 14 processes the MAC layer, the packet data integration protocol (PDCP) layer, the wireless link control (RLC) layer, and the RRC layer.
  • PDCP packet data integration protocol
  • RLC wireless link control
  • the medium access control layer processing unit 15 included in the upper layer processing unit 14 processes the MAC layer.
  • the radio resource control layer processing unit 16 included in the upper layer processing unit 14 processes the RRC layer.
  • the wireless resource control layer processing unit 16 manages various setting information / parameters of its own device.
  • the radio resource control layer processing unit 16 sets various setting information / parameters based on the signal of the upper layer received from the base station apparatus 3. That is, the radio resource control layer processing unit 16 sets various setting information / parameters based on the information indicating various setting information / parameters received from the base station apparatus 3.
  • the parameter may be an upper layer parameter and / or an information element.
  • the wireless transmission / reception unit 10 performs physical layer processing such as modulation, demodulation, coding, and decoding.
  • the wireless transmission / reception unit 10 separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. These processes may be referred to as reception processes.
  • the wireless transmission / reception unit 10 generates a physical signal (uplink signal) by modulating, encoding, and generating a baseband signal (converting to a time continuous signal), and transmits the physical signal (uplink signal) to the base station device 3. These processes may be referred to as transmission processes.
  • the RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by orthogonal demodulation (down-conversion), and removes unnecessary frequency components.
  • the RF unit 12 outputs the processed analog signal to the baseband unit.
  • the baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal.
  • the baseband unit 13 removes a portion corresponding to the CP from the converted digital signal, performs a fast Fourier transform (FFT) on the signal from which the CP has been removed, and extracts a signal in the frequency domain.
  • FFT fast Fourier transform
  • the baseband unit 13 performs inverse fast Fourier transform (IFFT) on the data to generate an OFDM symbol, adds CP to the generated OFDM symbol, generates a baseband digital signal, and generates a baseband digital signal. Convert to analog signal.
  • the baseband unit 13 outputs the converted analog signal to the RF unit 12.
  • IFFT inverse fast Fourier transform
  • the RF unit 12 removes an extra frequency component from the analog signal input from the baseband unit 13 using a low-pass filter, up-converts the analog signal to a carrier frequency, and transmits the analog signal via the antenna unit 11. Further, the RF unit 12 amplifies the electric power. Further, the RF unit 12 may have a function of controlling the transmission power.
  • the RF unit 12 is also referred to as a transmission power control unit.
  • FIG. 6 is a schematic block diagram showing the configuration of the base station device 3 according to one aspect of the present embodiment.
  • the base station apparatus 3 includes a wireless transmission / reception unit 30 and an upper layer processing unit 34.
  • the radio transmission / reception unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33.
  • the upper layer processing unit 34 includes a medium access control layer processing unit 35 and a radio resource control layer processing unit 36.
  • the wireless transmission / reception unit 30 is also referred to as a transmission unit, a reception unit, or a physical layer processing unit.
  • the upper layer processing unit 34 processes the MAC layer, PDCP layer, RLC layer, and RRC layer.
  • the medium access control layer processing unit 35 included in the upper layer processing unit 34 processes the MAC layer.
  • the radio resource control layer processing unit 36 included in the upper layer processing unit 34 processes the RRC layer.
  • the wireless resource control layer processing unit 36 generates downlink data (TB, DL-SCH), system information, RRC message, MAC CE, etc. arranged in the PDSCH, or acquires them from a higher-level node and sends them to the wireless transmission / reception unit 30. Output. Further, the wireless resource control layer processing unit 36 manages various setting information / parameters of each terminal device 1.
  • the wireless resource control layer processing unit 36 may set various setting information / parameters for each terminal device 1 via a signal of the upper layer. That is, the radio resource control layer processing unit 36 transmits / notifies information indicating various setting information / parameters.
  • the physical signal generated by the wireless transmission / reception unit 30 is transmitted to the terminal device 1 (that is, transmission processing is performed). In addition, the wireless transmission / reception unit 30 performs reception processing of the received physical signal.
  • the medium access control layer processing unit 15 and / or 35 may be referred to as a MAC entity.
  • Each part of the terminal device 1 with reference numerals 10 to 16 may be configured as a circuit.
  • Each of the portions of the base station apparatus 3 with reference numerals 30 to 36 may be configured as a circuit.
  • a part or all of the portions of reference numerals 10 to 16 included in the terminal device 1 may be configured as a memory and a processor connected to the memory.
  • a part or all of the part of the base station apparatus 3 with reference numerals 30 to 36 may be configured as a memory and a processor connected to the memory.
  • Various aspects (operations, processes) according to the present embodiment may be realized (performed) in the memory included in the terminal device 1 and / or the base station device 3 and the processor connected to the memory.
  • the PT-RS transmitted by the terminal device 1 may be referred to as UL PT-RS, and the PT-RS received by the terminal device 1 may be referred to as DL PT-RS.
  • the terminal device 1 can transmit and receive side links, it may be possible to transmit and receive SL PT-RS.
  • PT-RS is included in PUSCH transmission, it may be referred to as PT-RS for PUSCH.
  • PT-RS is included in the PDSCH transmission, it may be referred to as PT-RS for PDSCH.
  • the PT-RS reception procedure in the terminal device 1 according to the present embodiment will be described.
  • Terminal device 1 assumes each MCS table with the maximum modulation order reported to support and is applied to each data channel (PDSCH, PDCCH, PBCH, PCH, MIB, SIB) at a particular carrier frequency.
  • the desired MCS and bandwidth threshold may be reported to the SCS based on the UE capability of the terminal device 1 at the particular carrier frequency.
  • the upper layer parameter phaseTrackingRS in DMRS-DownlinkConfig may be given by setting up and / or releasing PTRS-DownlinkConfig.
  • the terminal device 1 may assume that PT-RS does not exist.
  • the values of the MCS indexes of FIGS. 8, 9, and 10 may be given by the DCI format used to schedule the PDSCH, or may be given based on the upper layer parameters. That is, the base station apparatus 3 does not have to transmit the PT-RS together with the PDSCH if these conditions are satisfied.
  • FIG. 7 (a) is a table showing a threshold PTRs-MCS i and scheduled MCS (I MCS) in based PT-RS in the time domain of the mapping pattern (L PT-RS) given by TimeDensity.
  • FIG. 7B is a table showing the frequency domain mapping pattern (K PT-RS ) of the PT-RS based on the threshold N RBi given by frequencyDensity and the scheduled bandwidth (N RB).
  • FIG. 8 is a diagram showing an MCS index table 1 (an example of the MCS index table) according to one aspect of the present embodiment.
  • FIG. 9 is a diagram showing an MCS index table 2 (another example 1 of the MCS index table) according to one aspect of the present embodiment.
  • FIG. 10 is a diagram showing an MCS index table 3 (another example 2 of the MCS index table) according to one aspect of the present embodiment.
  • Each MCS index table is used to show the relationship between the MCS index I MCS and the modulation order, target code rate, and spectral efficiency.
  • the MCS index may be indicated via DCI or by upper layer parameters.
  • the terminal device 1 may be assumed that the terminal device 1 does not have PT-RS.
  • ptrs-MCS i (i 1,2,3), i.e. ptrs-MCS 1 , ptrs-MCS 2 , ptrs-MCS 3 , respectively, if FIG. 8 or 10 is used, FIG. 8 or FIG.
  • the MCS indexes 0 to 29 of FIG. 9 and FIG. 9 are used, they may be set with the values of the MCS indexes 0 to 28 of FIG.
  • ptrs-MCS 4 is not explicitly set by the upper layer, it may be assumed to be 29 when FIG.
  • ptrs-MCS 1 , ptrs-MCS 2 , and ptrs-MCS 3 may be given so as to satisfy 0 ⁇ ptrs-MCS 1 ⁇ ptrs-MCS 2 ⁇ ptrs-MCS 3 ⁇ 29 or 28, respectively. ..
  • the values of N RB0 and N RB1 may be given so as to satisfy 1 ⁇ N RB0 ⁇ N RB1 ⁇ 276, respectively.
  • PT-RS time density L PT-RS
  • K PT-RS frequency density K PT-RS
  • the terminal device 1 If the terminal device 1 receives a PDSCH with an arrangement period of 2 symbols or less and the L PT-RS is set to 2 or 4, the terminal device 1 assumes that the PT-RS is not transmitted. You may. Further, when the terminal device 1 receives the PDSCH with the arrangement period of 4 symbols or less and the L PT-RS is set to 4, the terminal device 1 assumes that the PT-RS is not transmitted. You may.
  • the MCS for PT-RS time density determination is It may be obtained from DCI for the same transport block of the initial transmission.
  • V may be the MCS index 28 in FIGS. 8 and 10 and the MCS index 27 in FIG.
  • the MCS obtained from DCI for the same transport block in the initial transmission may be less than or equal to V.
  • the PT-RS antenna port is the DM-RS with the lowest index among the plurality of DM-RS antenna ports assigned to the PDSCH. It may be associated with an antenna port.
  • the PT-RS antenna port is between multiple DM-RS antenna ports assigned for the codeword with the highest MCS (MCS index). It may be associated with the lowest index DM-RS antenna port. If the MCS indexes of the two codewords have the same value, the PT-RS antenna port may be associated with the DM-RS antenna port of the lowest index assigned for codeword 0.
  • MCS index MCS index
  • the terminal device 1 may assume that the PT-RS exists only in one or more resource blocks used for the PDSCH.
  • FIG. 11 is a flow diagram showing a set of one or more time indexes l defined in connection with the start of a PDSCH arrangement according to one aspect of this embodiment.
  • step 1102 is repeated as long as is within the PDSCH arrangement.
  • the terminal apparatus 1 adds a l ref + iL PT-RS to the set of time indices of PT-RS.
  • the terminal device 1 increments i by one.
  • the terminal apparatus 1, l ref + iL PT-RS repeats steps 1102 to more than PDSCH placement.
  • the PT-RS is mapped to the OFDM symbol after the OFDM symbol to which the reference DM-RS is mapped.
  • one or more resource blocks placed for PDSCH transmissions are numbered from 0 to NRB -1, from the lowest scheduled resource block to the highest resource block.
  • One or more subcarriers corresponding to a set of one or more resource blocks are numbered from 0 to N RB SC N RB -1 in order from lowest frequency.
  • the subcarriers that terminal device 1 assumes to have PT-RS mapped to may be given by FIG.
  • FIG. 12 is a diagram showing an example of a calculation formula used to assume a subcarrier k to which PT-RS according to one embodiment of the present embodiment is mapped.
  • i is 0, 1, 2, ...
  • the k RE ref may be given by FIG. 13 showing the offset (frequency offset) corresponding to the DM-RS port associated with the PT-RS port. If the upper layer parameter resourceElementOffset in PTRS-DownlinkConfig is not set, one or more values shown in the column corresponding to offset00 may be used.
  • n RNTI is a DCI-related RNTI that schedules transmissions.
  • NRB is the number of scheduled resource blocks.
  • K PT-RS may be given by the procedure associated with FIG.
  • the k RE ref may correspond to the frequency offset of the RE level within 1 RB.
  • iK PT-RS and k RB ref may correspond to RB level frequency offsets.
  • FIG. 13 is a diagram showing a correspondence relationship of k RE ref according to one aspect of the present embodiment.
  • the k RE ref may be determined based on the value of the DM-RS antenna port p, the DM-RS Configuration type, and the resourceElementOffset.
  • the terminal device 1 may assume that the PT-RS does not exist in the PDSCH.
  • the terminal device 1 schedules PDSCH with a bandwidth smaller than a predetermined bandwidth.
  • the reception process may be performed on the assumption that the PT-RS exists in the PDSCH. That is, when the base station apparatus 3 can perform coverage enhancement on the downlink and schedules PDSCH with a bandwidth smaller than a predetermined bandwidth, the base station apparatus 3 determines the frequency density K PT-RS . As a value, PT-RS may be transmitted together with PDSCH.
  • the terminal device 1 performs a MOD calculation on the k RE ref value corresponding to each antenna port and offset by the total number of DM-RS antenna ports, and the obtained value corresponds to each DM-RS antenna port. It may be used as k RE ref.
  • the base station apparatus 3 When the base station apparatus 3 schedules the PDSCH transmission with a bandwidth smaller than 1PRB and transmits the PT-RS together with the PDSCH, the base station apparatus 3 has the PTRS-DownlinkConfig in the terminal apparatus 1. It is not necessary to set the upper layer parameter frequencyDensity of. Based on the setting, the terminal device 1 can always perform reception processing on the assumption that PT-RS exists together with PDSCH.
  • the terminal device 1 may not be expected to have the total number of DM-RS antenna ports used> the number of subcarriers in the scheduled bandwidth. That is, it may not be expected that a plurality of DM-RS antenna ports will be shared by one k RE ref.
  • the base station apparatus 3 does not have to schedule a PDSCH such that the total number of DM-RS antenna ports used> the number of subcarriers of the scheduled bandwidth.
  • the terminal device 1 does not have to transmit PT-RS (UL PT-RS).
  • the upper layer parameter phaseTrackingRS in DMRS-UplinkConfig may be given by setting up and / or releasing PTRS-UplinkConfig. If either or both of the upper layer parameters timeDensity and / or frequencyDensity in the PTRS-UplinkConfig is set, the terminal device 1 corresponds to the presence and pattern of the PT-RS antenna port as shown in FIG.
  • ptrs-MCS i (i 1,2,3), i.e. ptrs-MCS 1 , ptrs-MCS 2 , ptrs-MCS 3 , respectively, MCS indexes 0-29 in FIG. 8 when FIG. 8 is used.
  • FIG. 9 it may be set with the values of the MCS indexes 0 to 28 of FIG.
  • ptrs-MCS 4 is not explicitly set by the upper layer, it may be assumed to be 29 when FIG. 8 is used and 28 when FIG. 9 is used.
  • the values of N RB0 and N RB1 may be given so as to satisfy 1 ⁇ N RB0 ⁇ N RB1 ⁇ 276, respectively.
  • PT-RS time density L PT-RS
  • K PT-RS frequency density K PT-RS
  • terminal device 1 If terminal device 1 is scheduled to transmit a PUSCH with an arrangement period of 2 symbols or less, and if L PT-RS is set to 2 or 4, terminal device 1 transmits PT-RS. You don't have to. Further, if the terminal device 1 is scheduled to transmit a PUSCH with an arrangement period of 4 symbols or less and the L PT-RS is set to 4, the terminal device 1 transmits the PT-RS. You don't have to.
  • the MCS for PT-RS time density determination is It may be obtained from DCI for the same transport block of the initial transmission.
  • V may be the MCS index 28 in FIG. 8 and the MCS index 27 in FIG.
  • the MCS obtained from DCI for the same transport block in the initial transmission may be less than or equal to V.
  • the maximum number of PT-RS ports set may be given by the upper layer parameter maxNrofPorts in PTRS-UplinkConfig.
  • the terminal device 1 is not expected to have a larger number of PT-RS ports than the number of PT-RS ports set by maxNrofPorts.
  • the number of PT-RS ports may be the number of PT-RS antenna ports.
  • the terminal device 1 reports the capability information indicating that it supports full coherent UL transmission, and if the terminal device 1 is set to UL PT-RS, the number of UL PT-RS ports is You may expect it to be set as 1. That is, if the base station device 3 receives a report of capability information indicating that the terminal device 1 supports full coherent UL transmission, the number of UL PT-RS ports for the terminal device 1 is set to 1. You may set it.
  • the relationship between one or more UL PT-RS ports and one or more DM-RS ports is signaled by the PT-RS association field in DCI format 0-1. May be good.
  • the terminal device 1 For PUSCH corresponding to CUL type 1 transmission, the terminal device 1 has a value of 0 in the PTRS-DMRS association for UL PTRS port 0 field in DCI format 0_1, or a PTRS-DMRS association for UL PTRS port 0 and 1 field.
  • the relationship between one or more PT-RS ports and one or more DM-RS ports may be assumed.
  • UL PT-RS port may be associated with DM-RS port 0 for PUSCH scheduled by DCI format 0_0 or activation DCI format 0_0.
  • the actual number of UL PT-RS ports for transmission is SRI (SRS resource indicator) in DCI format 0-1 or the upper layer parameter sri- in rrc-ConfiguredUplinkGrant. It may be determined based on the Resource Indicator. If the terminal device 1 is set with the upper layer parameter phaseTrackingRS in DMRS-UplinkConfig, the PT-RS port index for each of the SRS resources set by the upper layer parameter ptrs-PortIndex set by SRS-Config. Is set and the hand is good. Assuming that different SRIs and associated PT-RS port indexes are the same, the corresponding UL DM-RS may be associated with one PT-RS port.
  • SRI SRS resource indicator
  • the actual number of UL PT-RS ports is TPMI (Transmit Precoding Matrix Indicator) in DCI format 0-1 and / or TRI (Transmit Rank Indicator), And / or may be determined based on the number of layers indicated by the Precoding information and number of layers field in DCI format 0-1 and / or the number of layers set by the upper layer parameter precodingAndNumberOfLayers. If the upper layer parameter maxNrofPorts in the PTRS-UplinkConfig set to'n2'is set, the actual UL PT-RS ports and associated transmit layers are obtained and shown from the indicated TPMI.
  • TPMI Transmit Precoding Matrix Indicator
  • TRI Transmit Rank Indicator
  • UL PT-RS port 0 is associated with multiple layers of UL layer [x] transmitted with PUSCH antenna ports 1000 and 1002 in the indicated TPMI, and UL PT-RS port 1 is indicated. It may be associated with a plurality of layers of UL layers [y] transmitted with the PUSCH antenna ports 1001 and 1003 in the TPMI.
  • UL layers [x] and / or [y] may be provided by the PTRS-DMRS association field in DCI format 0-1.
  • Q p may be used to indicate the number of PT-RS ports.
  • the ⁇ PUSCH PTRS is shown by FIG.
  • FIG. 14 is a table diagram showing ⁇ PUSCH PTRS according to one aspect of the present embodiment. The ⁇ PUSCH PTRS may be determined based on the number of PUSCH layers, the type of PUSCH transmission scheme, and the type of codebook subset.
  • the terminal device 1 is set to one or more upper layer parameters sampleDensity and It is assumed that the terminal device 1 is a function of the presence of the PT-RS antenna port and the corresponding scheduled bandwidth within the corresponding BWP, as shown in FIG. Terminal device 1 has PT-RS when N RB0 > 1 or RNTI is the same value as TC-RNTI and the scheduled number of RBs (bandwidth) is less (smaller) than N RB0. You may assume that you do not.
  • FIG. 15 is a diagram showing a PUSCH DM-RS configuration type according to one aspect of the present embodiment.
  • the values of N RB0 , N RB1 , N RB2 , N RB3 , and N RB4 are given so as to satisfy 1 ⁇ N RB0 ⁇ N RB1 ⁇ N RB2 ⁇ N RB3 ⁇ N RB4 ⁇ 276, respectively. May be good.
  • FIG. 16 is a diagram showing a PT-RS scaling factor when the modified recording according to one aspect of the present embodiment is effective.
  • the PT-RS precoded for the subcarrier k of layer j may be given based on the sequence generation of FIG.
  • FIG. 17 is a diagram showing a sequence generation of PT-RS for PUSCH when the modified recording according to one aspect of the present embodiment is not effective.
  • the antenna port associated with the PT-RS transmission may be provided based on the procedure described above.
  • r (m) may be given based on the sequence of DM-RS for PUSCH. r (m) is given at the position of the first DM-RS symbol if PUSCH intraslot frequency hopping is not performed, and is the first DM-RS symbol per hop if PUSCH intraslot frequency hopping is performed. May be given in the position of.
  • the sequence rm (m ') of the PT-RS mapped at the position m before the modified recording may be generated based on the sequence generation of FIG.
  • FIG. 18 is a diagram showing a sequence generation of PT-RS with respect to PUSCH when the modified recording according to one aspect of the present embodiment is effective.
  • M PT-RS number N PT-RS group of a group, PT-RS number N group of samples for each group samp, and, subcarriers corresponding to the scheduled bandwidth used PUSCH transmission It may be based on a few M PUSCH SC.
  • c (i) is a pseudo-random sequence, and the pseudo-random sequence generator may be initialized with a hint at a certain timing.
  • l is the lowest OFDM symbol number in the PUSCH placed in the slot n mu s, f including PT-RS.
  • the N ID may be given by the upper layer parameter nPUSCH-Identity.
  • w (i) may be given by FIG.
  • FIG. 19 is a diagram showing an example of the orthogonal sequence w (i) according to one aspect of the present embodiment.
  • the terminal device 1 transmits PT-RS only in one or more resource blocks used for PUSCH.
  • the PT-RS may be mapped to a resource element according to FIG.
  • FIG. 20 is a diagram showing mapping of PT-RS according to one aspect of the present embodiment.
  • l is any of the OFDM symbols placed for PUSCH transmission.
  • the resource element used for PT-RS is not used for DM-RS.
  • k'and ⁇ correspond to the antenna ports and may be given by FIG. 21 and the DM-RS configuration type.
  • the DM-RS configuration type may be given by the upper layer parameter DMRS-UplinkConfig.
  • the recording matrix W may be given based on the corresponding PUSCH.
  • ⁇ PT-RS is a scaling factor used to match the specified transmission power.
  • FIG. 21 is a diagram showing various parameters for the DM-RS configuration type according to one aspect of the present embodiment.
  • FIG. 22 is a flow diagram showing a set of one or more time indexes l defined in relation to the start of the PUSCH arrangement when the modified recording according to one embodiment of the present embodiment is not valid.
  • step 2202 is repeated as long as is within the PUSCH arrangement.
  • the terminal apparatus 1 adds a l ref + iL PT-RS to the set of time indices of PT-RS.
  • the terminal device 1 increments i by one.
  • the terminal apparatus 1, the l ref + iL PT-RS repeats Steps 2202 to more than PUSCH arrangement.
  • the PT-RS is mapped to the OFDM symbol after the OFDM symbol to which the reference DM-RS is mapped.
  • one or more resource blocks placed for PUSCH transmission are numbered from 0 to NRB -1, from the lowest scheduled resource block to the highest resource block.
  • One or more subcarriers corresponding to a set of one or more resource blocks are numbered from 0 to N RB SC N RB -1 in order from lowest frequency.
  • the subcarriers that the terminal device 1 assumes PT-RS is mapped to may be given by FIG.
  • FIG. 23 is a diagram showing a calculation formula used to assume a subcarrier k to which PT-RS according to one embodiment of the present embodiment is mapped.
  • i is 0, 1, 2, ...
  • the k RE ref may be given by FIG. 24 showing the offset (frequency offset) with respect to the DM-RS port associated with the PT-RS port. If the upper layer parameter resourceElementOffset in PTRS-DownlinkConfig is not set, one or more values shown in the column corresponding to offset00 may be used.
  • n RNTI is RNTI related to DCI scheduling transmissions using C-RNTI, CS-RNTI, MCS-C-RNTI, SP-CSI-RNTI, or CS in the case of CUL (Configured UL, configured grant). -RNTI.
  • NRB is the number of scheduled resource blocks.
  • K PT-RS may be given by the procedure associated with FIG.
  • the k RE ref may correspond to the frequency offset of the RE level within 1 RB.
  • iK PT-RS and k RB ref may correspond to RB level frequency offsets.
  • FIG. 24 is a diagram showing a correspondence relationship of k RE ref according to one aspect of the present embodiment.
  • the k RE ref may be determined based on the value of the DM-RS antenna port p, the DM-RS Configuration type, and the resourceElementOffset.
  • mapping to physical resources when transformation recording is effective will be described.
  • the terminal device 1 transmits PT-RS only in one or more resource blocks used for PUSCH.
  • the sequence r (m') is multiplexed by ⁇ 'and mapped to the N group samp N PT-RS group complex value symbols within ⁇ to (0) (m).
  • ⁇ to (0) (m) are one or more complex value symbols in the OFDM symbol l before the modified recording.
  • m is the number of PT-RS groups N PT-RS group according to FIG. 25, the number of samples per PT-RS group N group samp , and the subcarriers corresponding to the scheduled bandwidth used for PUSCH transmission. It may be based on a few M PUSCH SC.
  • S in FIG. 25 may correspond to a value obtained based on the number of PT-RS groups, and k in FIG.
  • FIG. 25 may correspond to a value obtained based on the number of samples in each PT-RS group.
  • ⁇ ' is the ratio between the amplitude of one of the outermost constellation points for ⁇ / 2-BPSK and one of the outermost constellation points for the modulation scheme used for PUSCH.
  • FIG. 25 is a diagram showing PT-RS symbol mapping according to one aspect of the present embodiment.
  • FIG. 26 is a flow diagram showing a set of one or more time indexes l defined in relation to the start of the PUSCH arrangement when the modified recording according to one embodiment of the present embodiment is not valid.
  • Step 2602 is repeated as long as is within the PUSCH arrangement.
  • the terminal apparatus 1 adds a l ref + iL PT-RS to the set of time indices of PT-RS.
  • the terminal device 1 increments i by one.
  • the terminal apparatus 1, the l ref + iL PT-RS repeats Steps 2602 to more than PUSCH arrangement.
  • L PT-RS ⁇ ⁇ 1, 2 ⁇ , and the value of L PT-RS may be given by the upper layer parameter timeDensityTransformPrecoding in PTRS-UplinkConfig.
  • the timeDensityTransformPrecoding may be used when the time density L PT-RS at the OFDM symbol level of the PT-RS with respect to the DFT-s-OFDM shows 2. If timeDensityTransformPrecoding is not set, the terminal device 1 may apply L PT-RS as 1.
  • the terminal device 1 and the base station device 3 support at least one of various capabilities related to coverage enhancement.
  • the terminal device 1 may transmit information to the base station device 3 indicating that it supports the capability related to coverage enhancement.
  • the terminal device 1 When the transformation recording is not enabled, the terminal device 1 has the upper layer parameters phaseTrackingRS set in DMRS-UplinkConfig, the upper layer parameters timeDensity and frequencyDensity in PTRS-UplinkConfig corresponding to phaseTrackingRS set, and scheduled.
  • MCS index I MCS is less than PTRs-MCS 1
  • / or scheduled bandwidth N RB is, if less than N RB0, the terminal apparatus 1 may not transmit the PT-RS .
  • the terminal device 1 further assumes that the L PT-RS is the first predetermined value and the K PT-RS is the second predetermined value when the setting related to the coverage enhancement for the uplink is valid. , PT-RS may be mapped to physical resources and transmitted.
  • the terminal device 1 performs a MOD calculation on the k RE ref value corresponding to each antenna port and offset by the total number of DM-RS antenna ports, and the obtained value corresponds to each DM-RS antenna port. It may be used as k RE ref.
  • the base station apparatus 3 When the base station apparatus 3 schedules the PUSCH transmission with a bandwidth smaller than 1PRB and the PT-RS is present in the PUSCH arrangement, the base station apparatus 3 has a PTRS-RS with respect to the terminal apparatus 1. It is not necessary to set the upper layer parameter frequencyDensity in UplinkConfig. Based on the setting, the terminal device 1 can always transmit the PUSCH including the PT-RS.
  • the terminal device 1 may not be expected to have the total number of DM-RS antenna ports used> the number of subcarriers in the scheduled bandwidth. That is, it may not be expected that a plurality of DM-RS antenna ports will be shared by one k RE ref.
  • the values of N RB0 to N RB4 given by the upper layer parameter sampleDensity in the PTRS-UplinkConfig are equal to or greater than 1, respectively.
  • the upper layer parameter sampleDensity in PTRS-UplinkConfig may be the upper layer parameter that is always set.
  • the terminal device 1 When transformation recording is enabled, the terminal device 1 is set with the upper layer parameters phaseTrackingRS in DMRS-UplinkConfig, the upper layer parameters timeDensityTransformPrecoding and sampleDensity in PTRS-UplinkConfig corresponding to phaseTrackingRS, and is scheduled.
  • MCS index I MCS is less than PTRs-MCS 1 was, and / or scheduled bandwidth N RB is, if less than N RB0, the terminal device 1, without sending the PT-RS Good.
  • the terminal device 1 further enables the setting related to coverage enhancement for the uplink, the L PT-RS is set to a third predetermined value, the number of PT-RS groups is set to a fourth predetermined value, and PT.
  • PT-RS may be mapped to physical resources and transmitted.
  • the index m of one or more PT-RS samples in the OFDM symbol l before the modified recording may be determined based on the value obtained from FIG. 25, or may be determined based on a new definition. May be good.
  • N RB may be M PUSCH SC.
  • scheduling a PUSCH transmission with a bandwidth smaller than 1 PRB may mean that the number of subcarriers used for the PUSCH transmission is less than 12 subcarriers.
  • the PUSCH transmission is performed at the first timing and the second timing, and even if the set of subcarriers used in the first timing and the set of subcarriers used in the second timing are different.
  • the first timing and the second timing may be different.
  • the first timing may correspond to a first slot
  • the second timing may correspond to a second slot different from the first slot.
  • the first timing may correspond to the first OFDM symbol
  • the second timing may correspond to a second OFDM symbol different from the first OFDM symbol.
  • "scheduling a PUSCH transmission with a bandwidth smaller than 1 PRB” may indicate that the PUSCH is transmitted with a resource given in units of a bandwidth smaller than 1 PRB.
  • the resource related to the PUSCH transmission may have two bandwidths distributed in a certain time. Each of the two bandwidths may be less than 1 PRB.
  • each of the two bandwidths may consist of X consecutive subcarriers.
  • the X may be a value smaller than 12.
  • the terminal device 1 and the base station device 3 can transmit and receive the PT-RS even in the resource mapping for performing the coverage enhancement.
  • the aspect of the present invention has taken the following measures. That is, the first aspect of the present invention is a terminal device, which is a receiving unit that receives the PTRS-UplinkConfig and DCI (DownlinkControlInformation) formats, and the FDRA (FrequencyDomain) included in the PTRS-UplinkConfig and the DCI format.
  • a transmitter that transmits PUSCH (Physical Uplink Shared Channel) and PT-RS (Phase Tracking Reference Signal) based on the value of the Resource Assignment) field, and the transmitter is when modified recording is enabled.
  • PUSCH Physical Uplink Shared Channel
  • PT-RS Phase Tracking Reference Signal
  • the PT-RS is not transmitted and the value of the FDRA field is changed.
  • the PT-RS is combined with the PUSCH. Send.
  • the second aspect of the present invention is the terminal device of the first aspect, and the transmitter has a value of the FDRA field with respect to the PUSCH when the modified recording is not effective. If the scheduled bandwidth is less than 1 PRB, it is determined whether to transmit the PT-RS together with the PUSCH based on whether the PTRS-UplinkConfig includes the upper layer parameter frequencyDensity.
  • the third aspect of the present invention is a base station apparatus, which includes a transmission unit that transmits PTRS-UplinkConfig and DCI (Downlink Control Information) formats, and the PTRS-UplinkConfig and DCI format.
  • a receiving unit that receives PUSCH (Physical Uplink Shared Channel) and PT-RS (Phase Tracking Reference Signal) based on the value of the FDRA (Frequency Domain Resource Assignment) field, and the receiving unit is provided with a modified recording.
  • PUSCH Physical Uplink Shared Channel
  • PT-RS Phase Tracking Reference Signal
  • the PUSCH receives the PT-RS on the assumption that the PUSCH includes the PT-RS regardless of the bandwidth scheduled for the PUSCH.
  • the fourth aspect of the present invention is the base station apparatus of the third aspect, and when the transmission unit sets that the modified recording is not effective, 1 PRB (1 PRB) with respect to the PUSCH.
  • 1 PRB Physical Resource Block
  • a fifth aspect of the present invention is a method used for a terminal device, which includes a step of receiving a PTRS-UplinkConfig and a DCI (DownlinkControlInformation) format, and the PTRS-UplinkConfig and the DCI format.
  • FDRA Frequency Domain Resource Assignment
  • the step of not transmitting the PT-RS and the value of the FDRA field are the above.
  • the PT-RS is transmitted together with the PUSCH when it indicates that the scheduled bandwidth for the PUSCH is less than 1 PRB and when the upper layer parameter indicating that the coverage enhancement is effective is set. Including steps.
  • the sixth aspect of the present invention is the method of the sixth aspect, and when the modified recording is not effective,
  • the PT-RS is determined based on whether the PTRS-UplinkConfig includes the upper layer parameter frequencyDensity. It includes a step of deciding whether to transmit with the PUSCH.
  • a seventh aspect of the present invention is a method used for a base station apparatus, in which a step of transmitting a PTRS-UplinkConfig and a DCI (DownlinkControlInformation) format, a step of transmitting the PTRS-UplinkConfig and the DCI format, and the DCI format.
  • the step of receiving PUSCH Physical Uplink Shared Channel
  • PT-RS Phase Tracking Reference Signal
  • the step of receiving the PUSCH on the assumption that the PUSCH includes the PT-RS is included regardless of the bandwidth scheduled for the PUSCH.
  • the eighth aspect of the present invention is the method of the seventh aspect, which is smaller than 1 PRB (Physical Resource Block) with respect to the PUSCH when the modified recording is set to be ineffective.
  • PRB Physical Resource Block
  • the base station device 3 and the program operating on the terminal device 1 control a CPU (Central Processing Unit) and the like so as to realize the functions of the above embodiment related to one aspect of the present invention. It may be a program (a program that makes a computer function). Then, the information handled by these devices is temporarily stored in RAM (Random Access Memory) at the time of processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). The CPU reads, corrects, and writes as necessary.
  • RAM Random Access Memory
  • ROMs Read Only Memory
  • HDD Hard Disk Drive
  • the terminal device 1 and a part of the base station device 3 in the above-described embodiment may be realized by a computer.
  • the 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 by the computer system and executed.
  • the "computer system” referred to here is a computer system built in the terminal device 1 or the base station device 3, and includes hardware such as an OS and peripheral devices.
  • the "computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system.
  • a "computer-readable recording medium” is a medium that dynamically holds a program for a short period of time, such as a communication line when a program is transmitted via a network such as the Internet or a communication line such as a telephone line.
  • a program may be held for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client.
  • the above-mentioned program may be a program for realizing a part of the above-mentioned functions, and may be a program for realizing the above-mentioned functions in combination with a program already recorded in the computer system.
  • the base station device 3 in the above-described embodiment 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 function block of the base station device 3 according to the above-described embodiment.
  • the terminal device 1 according to the above-described embodiment can also communicate with the base station device as an aggregate.
  • the base station apparatus 3 in the above-described embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGen RAN, NR RAN). Further, the base station apparatus 3 in the above-described embodiment may have a part or all of the functions of the upper node with respect to eNodeB and / or gNB.
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • NG-RAN NextGen RAN, NR RAN
  • NG-RAN NextGen RAN, NR RAN
  • a part or all of the terminal device 1 and the base station device 3 in the above-described embodiment may be realized as an LSI which is typically an integrated circuit, or may be realized as a 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 making an integrated circuit is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. Further, when an integrated circuit technology that replaces an LSI appears due to advances in semiconductor technology, it is also possible to use an integrated circuit based on this technology.
  • the terminal device is described as an example of the communication device, but the present invention is not limited to this, and the present invention is not limited to this, and is a stationary or non-movable electronic device installed indoors or outdoors.
  • terminal devices or communication devices such as AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other living equipment.
  • One aspect of the present invention is used, for example, in a communication system, a communication device (for example, a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (for example, a communication chip), a program, or the like. be able to.
  • a communication device for example, a mobile phone device, a base station device, a wireless LAN device, or a sensor device
  • an integrated circuit for example, a communication chip
  • a program or the like.
  • Terminal equipment 3
  • Base station equipment 10 30
  • Wireless transmission / reception unit 11 31
  • Antenna unit 12 32
  • RF unit 13 33
  • Baseband unit 14 34
  • Upper layer Processing unit 15 35
  • Medium access control layer Processing unit 16 36

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention comprend : une unité de réception qui reçoit un format des informations de commande de liaison montante PTRS et des informations de commande de liaison descendante (DCI) ; et une unité de transmission qui transmet un canal physique partagé montant (PUSCH) et un signal de référence de suivi de phase (PT-RS) sur la base des informations de commande de liaison montante PTRS et de la valeur d'un champ d'attribution de ressource de domaine fréquentiel (FDRA) inclus dans le format DCI. L'unité de transmission ne transmet pas le PT-RS dans le cas où la valeur du champ FDRA montre que la bande passante programmée pour le PUSCH est inférieure à 1 bloc de ressources physiques (PRB) tandis que le précodage par transformation est activé, mais transmet le PT-RS conjointement avec le PUSCH dans le cas où la valeur de champ FDRA montre que la bande passante programmée pour le PUSCH est inférieure à 1 PRB et qu'un paramètre de couche supérieure est établi, indiquant que l'amélioration de la couverture est permise.
PCT/JP2020/044216 2019-11-28 2020-11-27 Équipement terminal, dispositif de station de base et procédé WO2021107090A1 (fr)

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WO2023287532A1 (fr) * 2021-07-14 2023-01-19 Qualcomm Incorporated Insertion de signal de référence de suivi de phase pour forme d'onde à porteuse unique multi-couches
WO2023012914A1 (fr) * 2021-08-03 2023-02-09 株式会社Ｎｔｔドコモ Terminal et procédé de communication radio
WO2023206431A1 (fr) * 2022-04-29 2023-11-02 Qualcomm Incorporated Association de signaux de référence pour de multiples mots de code de liaison montante

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2023287532A1 (fr) * 2021-07-14 2023-01-19 Qualcomm Incorporated Insertion de signal de référence de suivi de phase pour forme d'onde à porteuse unique multi-couches
US11800551B2 (en) 2021-07-14 2023-10-24 Qualcomm Incorporated Phase tracking reference signal insertion with higher-rank single-carrier waveform
WO2023012914A1 (fr) * 2021-08-03 2023-02-09 株式会社Ｎｔｔドコモ Terminal et procédé de communication radio
WO2023206431A1 (fr) * 2022-04-29 2023-11-02 Qualcomm Incorporated Association de signaux de référence pour de multiples mots de code de liaison montante

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