WO2019194271A1 - Dispositif terminal - Google Patents

Dispositif terminal Download PDF

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Publication number
WO2019194271A1
WO2019194271A1 PCT/JP2019/014925 JP2019014925W WO2019194271A1 WO 2019194271 A1 WO2019194271 A1 WO 2019194271A1 JP 2019014925 W JP2019014925 W JP 2019014925W WO 2019194271 A1 WO2019194271 A1 WO 2019194271A1
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WIPO (PCT)
Prior art keywords
unit
terminal device
base station
information
downlink
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PCT/JP2019/014925
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English (en)
Japanese (ja)
Inventor
中村　理
淳悟 後藤
佐藤　聖二
泰弘 浜口
Original Assignee
シャープ株式会社
鴻穎創新有限公司
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Publication of WO2019194271A1 publication Critical patent/WO2019194271A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • One aspect of the present invention is a terminal device that communicates with a base station device, and when the RRC parameter related to the CQI table indicates the first CQI table, the bit formed by the bitmap parameter related to rank indicator restriction If PMI and RI reporting corresponding to the precoder associated with the number of layers specified by the sequence is prohibited and the RRC parameter for the CQI table points to the second CQI table, then the bitmap parameter for rank indicator restriction forms Both PMI and RI reporting corresponding to the precoder associated with the number of layers specified by the bit sequence and PMI and RI reporting corresponding to the precoder associated with more than four layers are prohibited.
  • an upper layer parameter RI restriction can be set.
  • There are a plurality of setting parameters in the RI restriction and one is a type 1 single panel RI restriction, which is composed of 8 bits.
  • the type 1 single panel RI restriction which is a bitmap parameter, forms the bit sequence r 7 ,... R 2 , r 1 .
  • r 7 is MSB (Most Significant Bit)
  • r 0 is LSB (Least Significant Bit).
  • PMI and RI reporting corresponding to the precoder associated with the i + 1 layer is not allowed.
  • the RI restriction includes a type 1 multi-panel RI restriction in addition to a type 1 single panel RI restriction, and is composed of 4 bits.
  • NR specifies the RRC parameter (nrofCQIsPerReport or Number_CQI) that defines the maximum number of CQIs for each CSI reporting.
  • RRC parameter node-CQIsPerReport or Number_CQI
  • Number-CQI the RRC parameter that defines the maximum number of CQIs for each CSI reporting.
  • the RI value is limited to 1 to 4, and the RRC parameter that defines the maximum number of CQIs is set to 2.
  • the RI value is not limited.
  • the RI restriction which is another RRC parameter, is also considered separately, and the RI is calculated.
  • the uplink control signal generation unit 2066 of the terminal apparatus uses 1 to 4 as RI values regardless of the RRC parameter that defines the maximum number of CQIs. And notify the base station apparatus.
  • the RI restriction which is another RRC parameter, is also considered separately, and the RI is calculated. In this way, by limiting the RI by the RRC indicating the CQI table, it is possible to realize the URLLC of a single codeword without changing the RRC parameters other than the RRC indicating the CQI table.
  • the RRC parameter indicating the CQI table is used as a criterion for determining whether or not to perform URLLC.
  • the URLLC is not limited to this, and the URLLC depends on whether the RRC parameter indicating the target BLER is 0.1 or a value smaller than 0.1. It may be determined whether or not to perform. Alternatively, whether to perform URLLC may be determined in consideration of the RRC parameter indicating the CQI table and the RRC parameter indicating the target BLER.
  • the number of codewords is limited to 1, and the number of ranks is also limited to 1 to 4.
  • the downlink control signal generation section sets the MCS index in consideration of the conditions assumed by the terminal apparatus when calculating the CSI, and notifies the terminal apparatus as DCI (Send.
  • the MCS index is set using the MCS table, but there are a plurality of MCS tables in the NR, set by the RRC parameter “mcs-Table”, and the RRC parameter is transmitted via the radio transmission unit 1070.
  • One of the MCS tables is an MCS table (first MCS table, 64QAM MCS table) including QPSK, 16QAM, and 64QAM as shown in FIG. 7, and the other is QPSK, 16QAM, 64QAM, as shown in FIG.
  • the modulation order column represents the order of the modulation scheme, 2 represents QPSK, 4 represents 16 QAM, 6 represents 64 QAM, and 8 represents 256 QAM.
  • the column of frequency efficiency represents frequency use efficiency (also called spectrum efficiency).
  • an MCS table for URLLC an MCS table including QPSK, 16QAM, and 64QAM (third MCS table, URLLC MCS table) may be supported.
  • FIG. 9 shows an example of the third MCS table.
  • the difference between the first MCS table and the third MCS table is that the lowest frequency use efficiency value of the third MCS table is lower than that of the first and second MCS tables.
  • the third MCS table may have a different index number (bit number) than the first and second MCS tables. In FIG. 10, it is configured up to 16QAM (modulation order 4), but it may be an MCS table including 64QAM (modulation order 6).
  • NR has specifications that allow CQI table selection and MCS table selection to be performed independently.
  • the control unit 104 of the base station apparatus uses the MCS table set in RRC as the MCS and uses the MCS used in the PDSCH.
  • the MCS index is determined using the table.
  • the MCS index is input to the downlink control signal generation unit 1064 and notified to the terminal apparatus as DCI.
  • the MCS index is determined using the first MCS table that is an MCS table supporting up to 64QAM.
  • the URLLC requires that the BLER is 0.00001 or less. If the third CQI table is set by the higher layer processing unit 202 as the CQI table and the second MCS table is set by the higher layer processing unit 202 as the MCS table, the control unit 104 of the base station apparatus sets an appropriate MCS. There is a problem that it becomes impossible to make a selection. Therefore, when the third CQI table that is the CLCI table for URLLC is set as the RRC parameter in the upper layer processing unit 102 and there is no setting of the MCS table by RRC, the control unit 104 is the third CCS table for URLLC. The MCS index is determined using the MCS table.
  • RRC signaling is also referred to as RRC message / RRC layer information / RRC layer signal / RRC layer parameter / RRC information element.
  • RRC signaling is information / signal processed in the radio resource control layer.
  • the RRC signaling transmitted from the base station apparatus may be common signaling for a plurality of terminal apparatuses in the cell.
  • the RRC signaling transmitted from the base station apparatus may be dedicated signaling (also referred to as dedicated signaling) for a certain terminal apparatus. That is, user apparatus specific (user apparatus specific) information is transmitted to a certain terminal apparatus using dedicated signaling.
  • the RRC message can include the UE capability of the terminal device.
  • UE Capability is information indicating a function supported by the terminal device.
  • the PUSCH is used to transmit MAC CE (Medium Access Control Element).
  • the MAC CE is information / signal processed (transmitted) in the medium access control layer (Medium Access Control Layer).
  • the power headroom may be included in the MAC CE and reported via the physical uplink shared channel. That is, the MAC CE field is used to indicate the power headroom level.
  • the uplink data can include an RRC message and a MAC CE.
  • RRC signaling and / or MAC CE is also referred to as higher layer signaling.
  • RRC signaling and / or MAC CE is included in the transport block.
  • PRACH is used for transmitting a preamble used for random access.
  • the PRACH is used for transmitting a random access preamble.
  • PRACH indicates the initial connection establishment (initial connection establishment) procedure, handover procedure, connection re-establishment (connection re-establishment) procedure, synchronization (timing adjustment) for uplink transmission, and PUSCH (UL-SCH) resource requirements. Used for.
  • the base station apparatus 10 uses the SRS to measure the uplink channel state (CSI Measurement).
  • At least the following downlink physical channel is used in downlink r31 radio communication.
  • the downlink physical channel is used for transmitting information output from an upper layer.
  • PBCH Physical broadcast channel
  • PDCH Physical downlink control channel
  • PDSCH Physical downlink shared channel
  • the PBCH is used to broadcast a master information block (Master Information Block: MIB, Broadcast Channel: BCH) that is commonly used by terminal devices.
  • MIB is one type of system information.
  • the MIB includes a downlink transmission bandwidth setting and a system frame number (SFN).
  • SFN system frame number
  • the MIB may include information indicating at least a part of a slot number, a subframe number, and a radio frame number in which the PBCH is transmitted.
  • the PDCCH is used to transmit downlink control information (Downlink Control Information: DCI).
  • DCI Downlink Control Information
  • the downlink control information defines a plurality of formats (also referred to as DCI formats) based on usage.
  • the DCI format may be defined based on the type of DCI and the number of bits constituting one DCI format. Each format is used according to the application.
  • the downlink control information includes control information for downlink data transmission and control information for uplink data transmission.
  • the DCI format for downlink data transmission is also referred to as downlink assignment (or downlink grant).
  • the DCI format for uplink data transmission is also referred to as an uplink grant (or uplink assignment).
  • C-RNTI and SPS C-RNTI are identifiers for identifying a terminal device in a cell.
  • the Temporary C-RNTI is an identifier for identifying a terminal device that has transmitted a random access preamble during a contention-based random access procedure.
  • C-RNTI and Temporary C-RNTI are used to control PDSCH transmission or PUSCH transmission in a single subframe.
  • the SPS C-RNTI (CS-RNTI) is used to periodically allocate PDSCH or PUSCH resources.
  • P-RNTI is used to transmit a paging message (Paging Channel: PCH).
  • SI-RNTI is used to transmit SIB, and RA-RNTI is used to transmit a random access response (message 2 in a random access procedure).
  • PDSCH is used to transmit downlink data (downlink transport block, DL-SCH).
  • the PDSCH is used to transmit a system information message (also referred to as System Information Block: SIB). Part or all of the SIB can be included in the RRC message.
  • SIB System Information Block
  • the PDSCH is used to transmit RRC signaling.
  • the RRC signaling transmitted from the base station apparatus may be common (cell specific) to a plurality of terminal apparatuses in the cell. That is, information common to user apparatuses in the cell is transmitted using cell-specific RRC signaling.
  • the RRC signaling transmitted from the base station apparatus may be a message dedicated to a certain terminal apparatus (also referred to as dedicated signaling). That is, user device specific (user device specific) information is transmitted to a certain terminal device using a dedicated message.
  • PDSCH is used to transmit MAC CE.
  • RRC signaling and / or MAC CE is also referred to as higher layer signaling.
  • the PMCH is used to transmit multicast data (Multicast Channel: MCH).
  • a synchronization signal (Synchronization signal: SS) and a downlink reference signal (Downlink Signal: DL RS) are used as downlink physical signals.
  • the downlink physical signal is not used to transmit information output from the upper layer, but is used by the physical layer.
  • the synchronization signal is used for the terminal device to synchronize the downlink frequency domain and time domain.
  • the downlink reference signal is used for the terminal apparatus to perform channel estimation / channel correction of the downlink physical channel.
  • the downlink reference signal is used to demodulate PBCH, PDSCH, and PDCCH.
  • the downlink reference signal can also be used by the terminal device to measure the downlink channel state (CSI measurement).
  • the downlink physical channel and the downlink physical signal are collectively referred to as a downlink signal.
  • the uplink physical channel and the uplink physical signal are collectively referred to as an uplink signal.
  • the downlink physical channel and the uplink physical channel are collectively referred to as a physical channel.
  • the downlink physical signal and the uplink physical signal are collectively referred to as a physical signal.
  • BCH, UL-SCH and DL-SCH are transport channels.
  • a channel used in the MAC layer is referred to as a transport channel.
  • a transport channel unit used in the MAC layer is also referred to as a transport block (TB) or a MAC PDU (Protocol Data Unit).
  • the transport block is a unit of data that is delivered (delivered) by the MAC layer to the physical layer. In the physical layer, the transport block is mapped to a code word, and an encoding process or the like is performed for each code word.
  • FIG. 2 is a schematic block diagram of the configuration of the base station apparatus 10 according to the present embodiment.
  • the base station apparatus 10 includes an upper layer processing unit (upper layer processing step) 102, a control unit (control step) 104, a transmission unit (transmission step) 106, a transmission antenna 108, a reception antenna 110, and a reception unit (reception step) 112. Consists of including.
  • the transmission unit 106 generates a physical downlink channel according to the logical channel input from the higher layer processing unit 102.
  • the transmission unit 106 includes an encoding unit (encoding step) 1060, a modulation unit (modulation step) 1062, a downlink control signal generation unit (downlink control signal generation step) 1064, and a downlink reference signal generation unit (downlink reference signal).
  • Generation step) 1066 a multiplexing unit (multiplexing step) 1068, and a wireless transmission unit (wireless transmission step) 1070.
  • the receiving unit 112 detects a physical uplink channel (demodulation, decoding, etc.) and inputs the content to the higher layer processing unit 102.
  • the reception unit 112 includes a radio reception unit (radio reception step) 1120, a propagation path estimation unit (propagation path estimation step) 1122, a demultiplexing unit (demultiplexing step) 1124, an equalization unit (equalization step) 1126, a demodulation unit ( (Demodulation step) 1128 and a decoding unit (decoding step) 1130.
  • the upper layer processing unit 102 includes a medium access control (Medium Access Control: MAC) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, a radio resource control (Radio) Processes higher layers than physical layer such as Resource (Control: RRC) layer.
  • Upper layer processing section 102 generates information necessary for controlling transmission section 106 and reception section 112 and outputs the information to control section 104.
  • Upper layer processing section 102 outputs downlink data (such as DL-SCH), system information (MIB, SIB), and the like to transmitting section 106.
  • the DMRS configuration information may be notified to the terminal device by system information (MIB or SIB) instead of notification by an upper layer such as RRC.
  • the upper layer processing unit 102 generates or acquires system information (MIB or part of SIB) to be broadcast from an upper node.
  • Upper layer processing section 102 outputs the broadcast system information to transmitting section 106 as BCH / DL-SCH.
  • the MIB is arranged in the PBCH in the transmission unit 106.
  • the SIB is arranged on the PDSCH in the transmission unit 106.
  • the upper layer processing unit 102 generates system information (SIB) unique to the terminal device or obtains it from the upper level.
  • SIB is arranged in the PDSCH in the transmission unit 106.
  • the upper layer processing unit 102 sets various RNTIs for each terminal device.
  • the RNTI is used for encryption (scrambling) of PDCCH, PDSCH, and the like.
  • the upper layer processing unit 102 outputs the RNTI to the control unit 104 / transmission unit 106 / reception unit 112.
  • the upper layer processing unit 102 includes downlink data (transport block, DL-SCH) arranged in the PDSCH, system information (System ⁇ Information Block: SIB) specific to the terminal device, RRC message, MAC CE, and DMRS configuration information in the SIB. If it is not notified by DCI or system information such as the MIB, DMRS configuration information or the like is generated or acquired from the upper node and output to the transmission unit 106.
  • the DMRS configuration information may be set separately for the uplink and the downlink, or may be set comprehensively.
  • the upper layer processing unit 102 manages various setting information of the terminal device 20. Part of the radio resource control function may be performed in the MAC layer or the physical layer.
  • the terminal device When the terminal device supports a predetermined function, the terminal device transmits information (parameter) indicating whether the predetermined device is supported. When the terminal device does not support the predetermined function, the terminal device may not transmit information (parameter) indicating whether or not the terminal device supports the predetermined function. That is, whether or not to support the predetermined function is notified by whether or not information (parameter) indicating whether or not to support the predetermined function is transmitted. Information (parameter) indicating whether or not a predetermined function is supported may be notified using 1 or 1 bit.
  • the upper layer processing unit 102 acquires the DL-SCH from the uplink data (including CRC) after decoding from the receiving unit 112.
  • the upper layer processing unit 102 performs error detection on the uplink data transmitted by the terminal device. For example, the error detection is performed at the MAC layer.
  • the control unit 104 controls the transmission unit 106 and the reception unit 112 based on various setting information input from the upper layer processing unit 102 / reception unit 112.
  • the control unit 104 generates downlink control information (DCI) based on the setting information input from the higher layer processing unit 102 / reception unit 112 and outputs the downlink control information (DCI) to the transmission unit 106.
  • DCI downlink control information
  • the control unit 104 considers the DMRS configuration information (whether DMRS configuration 1 or DMRS configuration 2) input from the higher layer processing unit 102 / reception unit 112, and the DMRS frequency allocation (DMRS configuration 1 In the case of (1), even-numbered subcarriers or odd-numbered subcarriers are set, and in the case of DMRS configuration 2, any one of the 0th to second sets) is set, and DCI is generated.
  • DMRS configuration 1 In addition to the frequency allocation of DMRS, DCI information related to cyclic shift of DMRS, code pattern of frequency domain OCC (Orthogonal Cover Code), and time domain OCC when DMRS symbols are set across multiple OFDM symbols The code pattern or the like may be notified.
  • the DCI includes various information such as information on DMRS, information on MCS and frequency allocation, and the like.
  • the control unit 104 determines the PUSCH MCS in consideration of the channel quality information (CSI Measurement result) measured by the propagation path estimation unit 1122.
  • the control unit 104 determines an MCS index corresponding to the MCS of the PUSCH.
  • the control unit 104 includes the determined MCS index in the uplink grant.
  • the transmission unit 106 generates a PBCH, a PDCCH, a PDSCH, a downlink reference signal, and the like according to the signal input from the higher layer processing unit 102 / control unit 104.
  • the encoding unit 1060 uses a predetermined encoding method determined by the higher layer processing unit 102 such as a block code, a convolutional code, a turbo code, and the like for the BCH and DL-SCH input from the upper layer processing unit 102. Encoding (including repetition) is performed using code, polar encoding, LDPC code, or the like.
  • the encoding unit 1060 punctures the encoded bits based on the encoding rate input from the control unit 104.
  • the modulation unit 1062 modulates the data of the encoded bits input from the encoding unit 1060 with a modulation scheme (modulation order) input from the predetermined control unit 104 such as BPSK, QPSK, 16QAM, 64QAM, and 256QAM. To do.
  • the modulation order is based on the MCS index selected by the control unit 104.
  • the downlink control signal generation unit 1064 adds a CRC to the DCI input from the control unit 104.
  • the downlink control signal generation unit 1064 encrypts (scrambles) the CRC using RNTI. Further, the downlink control signal generation section 1064 performs QPSK modulation on the DCI to which the CRC is added to generate a PDCCH.
  • the downlink reference signal generation unit 1066 generates a sequence known by the terminal device as a downlink reference signal. The known sequence is determined by a predetermined rule based on a physical cell identifier or the like for identifying the base station device 10.
  • the multiplexing unit 1068 multiplexes the modulation symbols of each channel input from the PDCCH / downlink reference signal / modulation unit 1062. That is, multiplexing section 1068 maps PDCCH / downlink reference signal / modulation symbol of each channel to resource element.
  • the resource element to be mapped is controlled by downlink scheduling input from the control unit 104.
  • the resource element is a minimum unit of physical resources composed of one OFDM symbol and one subcarrier.
  • the transmission unit 106 includes an encoding unit 1060 and a modulation unit 1062 for the number of layers. In this case, the upper layer processing unit 102 sets an MCS for each transport block of each layer.
  • the wireless transmission unit 1070 generates an OFDM symbol by performing inverse fast Fourier transform (Inverse Fourier Transform: IFFT) on the multiplexed modulation symbols and the like.
  • the wireless transmission unit 1070 generates a baseband digital signal by adding a cyclic prefix (CP) to the OFDM symbol. Further, the wireless transmission unit 1070 converts the digital signal into an analog signal, removes excess frequency components by filtering, up-converts to a carrier frequency, amplifies the power, and outputs to the transmission antenna 108 for transmission.
  • IFFT inverse fast Fourier transform
  • CP cyclic prefix
  • the receiving unit 112 detects (separates, demodulates, decodes) the received signal from the terminal device 20 via the receiving antenna 110 in accordance with an instruction from the control unit 104, and sends the decoded data to the higher layer processing unit 102 / control unit 104. input.
  • the radio reception unit 1120 converts an uplink signal received via the reception antenna 110 into a baseband signal by down-conversion, removes unnecessary frequency components, and amplifies the signal level so that the signal level is properly maintained. The level is controlled, quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the analog signal that has been demodulated is converted into a digital signal.
  • Radio receiving section 1120 removes a portion corresponding to CP from the converted digital signal.
  • the radio reception unit 1120 performs fast Fourier transform (FFT) on the signal from which CP is removed, and extracts a signal in the frequency domain.
  • FFT fast Fourier transform
  • the demultiplexing unit 1124 Based on the uplink scheduling information (uplink data channel allocation information and the like) input from the control unit 104, the demultiplexing unit 1124 converts the signal input from the radio reception unit 1120 into the PUSCH, PUCCH, and uplink reference signal. And so on.
  • the separated uplink reference signal is input to the propagation path estimation unit 1122.
  • the separated PUSCH and PUCCH are output to the equalization unit 1126.
  • the propagation path estimation unit 1122 estimates the frequency response (or delay profile) using the uplink reference signal.
  • the frequency response result whose propagation path is estimated for demodulation is input to the equalization unit 1126.
  • the propagation path estimation unit 1122 measures uplink channel conditions (RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), RSSI (Received Signal Strength Indicator) measurement) using the uplink reference signal. Do.
  • the measurement of the uplink channel condition is used for determining the MCS for PUSCH.
  • the equalization unit 1126 performs processing for compensating for the influence on the propagation path from the frequency response input from the propagation path estimation unit 1122.
  • any existing propagation path compensation such as a method of multiplying MMSE weights or MRC weights or a method of applying MLD can be applied.
  • the demodulating unit 1128 performs demodulation processing based on the modulation scheme information that is determined in advance / instructed by the control unit 104.
  • the decoding unit 1130 performs a decoding process on the output signal of the demodulating unit based on information on the coding rate specified by the coding rate / control unit 104 determined in advance.
  • the decoding unit 1130 inputs the decoded data (such as UL-SCH) to the upper layer processing unit 102.
  • FIG. 3 is a schematic block diagram showing the configuration of the terminal device 20 in the present embodiment.
  • the terminal device 20 includes an upper layer processing unit (upper layer processing step) 202, a control unit (control step) 204, a transmission unit (transmission step) 206, a transmission antenna 208, a reception antenna 210, and a reception unit (reception step) 212. Consists of.
  • the upper layer processing unit 202 performs processing of a medium access control (MAC) layer, a packet data integration protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (RRC) layer.
  • the upper layer processing unit 202 manages various setting information of the own terminal device.
  • Upper layer processing section 202 notifies base station apparatus 10 of information (UE Capability) indicating the function of the terminal apparatus supported by the terminal apparatus, via transmission section 206.
  • Upper layer processing section 202 notifies UE Capability by RRC signaling.
  • the upper layer processing unit 202 acquires the decoded data such as DL-SCH and BCH from the receiving unit 212. Upper layer processing section 202 generates HARQ-ACK from the DL-SCH error detection result. The upper layer processing unit 202 generates an SR. Upper layer processing section 202 generates UCI including HARQ-ACK / SR / CSI (including CQI report). Further, when the DMRS configuration information is notified by the upper layer, the upper layer processing unit 202 inputs information regarding the DMRS configuration to the control unit 204. The upper layer processing unit 202 inputs the UCI and UL-SCH to the transmission unit 206. Note that some of the functions of the upper layer processing unit 202 may be included in the control unit 204.
  • the control unit 204 interprets downlink control information (DCI) received via the receiving unit 212.
  • the control unit 204 controls the transmission unit 206 according to PUSCH scheduling / MCS index / TPC (Transmission Power Control) acquired from DCI for uplink transmission.
  • the control unit 204 controls the receiving unit 212 according to the PDSCH scheduling / MCS index acquired from the DCI for downlink transmission.
  • the control unit 204 specifies the DMRS frequency allocation according to the information regarding the DMRS frequency allocation included in the DCI for downlink transmission and the DMRS configuration information input from the higher layer processing unit 202.
  • the transmission unit 206 includes an encoding unit (encoding step) 2060, a modulation unit (modulation step) 2062, an uplink reference signal generation unit (uplink reference signal generation step) 2064, and an uplink control signal generation unit (uplink control signal).
  • the encoding unit 2060 performs convolution encoding and block processing on the uplink data (UL-SCH) input from the higher layer processing unit 202 according to the control of the control unit 204 (according to the coding rate calculated based on the MCS index). Encoding such as encoding and turbo encoding is performed.
  • the modulation unit 2062 modulates the coded bits input from the coding unit 2060 with a modulation method / predetermined modulation method for each channel designated by the control unit 204 such as BPSK, QPSK, 16QAM, 64QAM, and 256QAM. (Generates modulation symbols for PUSCH).
  • the uplink reference signal generation unit 2064 arranges a physical cell identifier (referred to as physical cell identity: PCI, Cell ID, etc.) and an uplink reference signal for identifying the base station apparatus 10 in accordance with an instruction from the control unit 204.
  • a sequence determined by a predetermined rule is generated based on the bandwidth to be used, the cyclic shift, the parameter value for generating the DMRS sequence, and the frequency allocation.
  • the uplink control signal generation unit 2066 encodes UCI and performs BPSK / QPSK modulation according to an instruction from the control unit 204, and generates a modulation symbol for PUCCH.
  • the multiplexing unit 2068 is used for the modulation symbol for PUSCH and the PUCCH according to the uplink scheduling information from the control unit 204 (transmission interval in SPS for uplink included in the RRC message, resource allocation included in DCI, etc.). Modulation symbols and uplink reference signals are multiplexed for each transmission antenna port (that is, each signal is mapped to a resource element).
  • the wireless transmission unit 2070 generates an OFDM symbol by performing an IFFT (Inverse Fourier Transform) on the multiplexed signal.
  • the wireless transmission unit 2070 adds a CP to the OFDM symbol to generate a baseband digital signal.
  • the radio transmission unit 2070 converts the baseband digital signal into an analog signal, removes excess frequency components, converts it to a carrier frequency by up-conversion, amplifies the power, and transmits the base station via the transmission antenna 208. Transmit to device 10.
  • the reception unit 212 includes a radio reception unit (radio reception step) 2120, a demultiplexing unit (demultiplexing step) 2122, a propagation channel estimation unit (propagation channel estimation step) 2144, an equalization unit (equalization step) 2126, and a demodulation unit ( A demodulating step) 2128 and a decoding unit (decoding step) 2130.
  • the radio reception unit 2120 converts the downlink signal received via the reception antenna 210 into a baseband signal by down-conversion, removes unnecessary frequency components, and sets the amplification level so that the signal level is properly maintained. Based on the in-phase component and the quadrature component of the received signal, the signal is quadrature demodulated and the quadrature demodulated analog signal is converted into a digital signal. Radio receiving section 2120 removes a portion corresponding to CP from the converted digital signal, performs FFT on the signal from which CP is removed, and extracts a frequency domain signal.
  • the demultiplexing unit 2122 separates the extracted frequency domain signal into a downlink reference signal, PDCCH, PDSCH, and PBCH.
  • the propagation path estimation unit 2124 estimates a frequency response (or delay profile) using a downlink reference signal (such as DM-RS).
  • the frequency response result whose propagation path is estimated for demodulation is input to the equalization unit 1126.
  • the propagation path estimation unit 2124 uses a downlink reference signal (CSI-RS or the like) to measure uplink channel conditions (RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), RSSI (Received Signal Strength). Indicator), SINR (Signal-to-Interference-plus Noise-power-Ratio) measurement).
  • the measurement of the downlink channel condition is used for determination of MCS for PUSCH and the like.
  • the measurement result of the downlink channel condition is used for determining the CQI index.
  • the equalization unit 2126 generates equalization weights based on the MMSE norm from the frequency response input from the propagation path estimation unit 2124.
  • the equalization unit 2126 multiplies the input signal (such as PUCCH, PDSCH, PBCH, etc.) from the demultiplexing unit 2122 by the equalization weight.
  • Demodulation section 2128 performs demodulation processing based on modulation order information determined in advance / instructed from control section 204.
  • the decoding unit 2130 performs a decoding process on the output signal of the demodulation unit 2128 based on information on a coding rate designated by the coding rate / control unit 204 determined in advance.
  • Decoding section 2130 inputs the decoded data (DL-SCH etc.) to higher layer processing section 202.
  • the program that operates in the apparatus related to the present invention may be a program that controls the central processing unit (CPU) and the like to function the computer so as to realize the functions of the above-described embodiments related to the present invention.
  • the program or the information handled by the program is temporarily read into volatile memory such as Random Access Memory (RAM) during processing, or stored in nonvolatile memory such as flash memory or Hard Disk Drive (HDD).
  • RAM Random Access Memory
  • HDD Hard Disk Drive
  • the CPU reads and corrects / writes.
  • Computer-readable recording medium means a program that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line.
  • a volatile memory inside a computer system serving as a server or a client may be included, which holds a program for a certain period of time.
  • the program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.
  • each functional block or various features of the apparatus used in the above-described embodiments can be implemented or executed by an electric circuit, that is, typically an integrated circuit or a plurality of integrated circuits.
  • Electrical circuits designed to perform the functions described herein can be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or others Programmable logic devices, discrete gate or transistor logic, discrete hardware components, or a combination thereof.
  • a general purpose processor may be a microprocessor or a conventional processor, controller, microcontroller, or state machine.
  • the electric circuit described above may be configured with a digital circuit or an analog circuit.
  • an integrated circuit based on the technology can be used.
  • the present invention is not limited to the above-described embodiment.
  • an example of an apparatus has been described.
  • the present invention is not limited to this, and a stationary or non-movable electronic device installed indoors or outdoors, such as an AV device, a kitchen device, It can be applied to terminal devices or communication devices such as cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other daily life equipment.
  • the present invention is suitable for use in a base station device, a terminal device, and a communication method.

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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 limite efficacement le nombre de rangs dans l'URLLC et réalise une transmission efficace. Dans une unité de traitement d'ordre supérieur de ce dispositif terminal, si une table pour URLLC est établie à l'aide de paramètres RRC, une unité de génération de signal de commande de liaison montante du dispositif terminal notifie à un dispositif de station de base seulement 1-4 en tant que valeurs pour des indicateurs de rang. Grâce à cette configuration, une unité de commande du dispositif de station de base effectue une transmission ayant seulement 1 à 4 rangs par rapport au dispositif de terminal, et peut seulement transmettre un mot de code unique.
PCT/JP2019/014925 2018-04-05 2019-04-04 Dispositif terminal WO2019194271A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018073224A JP2019186673A (ja) 2018-04-05 2018-04-05 端末装置および基地局装置
JP2018-073224 2018-04-05

Publications (1)

Publication Number Publication Date
WO2019194271A1 true WO2019194271A1 (fr) 2019-10-10

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Country Status (2)

Country Link
JP (1) JP2019186673A (fr)
WO (1) WO2019194271A1 (fr)

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL.: "MCSCQI design for URLLC transmission", 3GPP TSG RAN WG1 MEETING #92 RL-1803312, 27 February 2018 (2018-02-27), XP051398469 *
INTEL CORPORATION: "On the features, assumptions, and parameters for IMT-2020 self-evaluation", 3GPP TSG RAN WG1 MEETING #92 RL-1802436, 17 February 2018 (2018-02-17), XP051397961 *
SAMSUNG: "Issues on CSI reporting", 3GPP TSG RAN WG1 MEETING #92 RL-1801961, 16 February 2018 (2018-02-16), XP051397099 *

Also Published As

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