WO2021005663A1 - 端末 - Google Patents

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Publication number
WO2021005663A1
WO2021005663A1 PCT/JP2019/026888 JP2019026888W WO2021005663A1 WO 2021005663 A1 WO2021005663 A1 WO 2021005663A1 JP 2019026888 W JP2019026888 W JP 2019026888W WO 2021005663 A1 WO2021005663 A1 WO 2021005663A1
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WO
WIPO (PCT)
Prior art keywords
frequency band
pdcch
coreset
scs
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/026888
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English (en)
French (fr)
Japanese (ja)
Inventor
浩樹 原田
聡 永田
大樹 武田
ジン ワン
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NTT Docomo Inc
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NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to JP2021530360A priority Critical patent/JPWO2021005663A1/ja
Priority to EP19937214.5A priority patent/EP3996438A4/en
Priority to PCT/JP2019/026888 priority patent/WO2021005663A1/ja
Priority to US17/624,726 priority patent/US20220256375A1/en
Priority to CN201980097906.0A priority patent/CN114026936A/zh
Publication of WO2021005663A1 publication Critical patent/WO2021005663A1/ja
Anticipated expiration legal-status Critical
Priority to JP2023099607A priority patent/JP7499384B2/ja
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers

Definitions

  • the present invention relates to a terminal that executes wireless communication, particularly a terminal that acquires system information.
  • LTE Long Term Evolution
  • NR New Radio
  • NG Next Generation
  • FR1 410MHz-7.125GHz
  • FR2 24.25GHz-52.6GHz
  • SI Study Item
  • the synchronization signal (SS: Synchronization Signal) and the downlink physical broadcast channel (PBCH: Physical Broadcast) Transmission cycle (Periodicity) for initial access of SSB (SS / PBCH Block) composed of CHannel), PDCCH (Physical Downlink Control Channel), specifically, Type for system information block (SIB) decoding 0
  • SSB Synchronization Signal
  • PBCH Physical Broadcast
  • Transmission cycle Periodicity
  • SSB Physical Downlink Control Channel
  • SIB System Information block
  • the bandwidth (number of resource blocks (RB)) of CORESET (control resource sets) may be called CORESET # 0) for Type0-PDCCH CSS (Common Search Space) set. It is also conceivable to change the number of symbols and the association rule between SSB and Type 0 PDCCH MO.
  • the present invention has been made in view of such a situation, and even when a different frequency band different from FR1 / FR2 is used, an appropriate control resource set or common search space used for acquiring system information is applied.
  • the purpose is to provide a possible terminal.
  • One aspect of the present disclosure is that when a different frequency band (for example, FR4) different from the frequency band including one or more frequency ranges (FR1, FR2) is used, a larger number of symbols are used than when the frequency band is used.
  • a terminal including a control unit (control unit 270) applied to the control resource set and a reception unit (control signal / reference signal processing unit 240) for receiving system information using the control resource set.
  • a terminal including a control unit (control unit 270) that applies the resource block of the above to the control resource set, and a reception unit (control signal / reference signal processing unit 240) that receives system information using the control resource set. Is.
  • One aspect of the present disclosure is that when a different frequency band (for example, FR4) different from the frequency band (FR1, FR2) including one or more frequency ranges is used, the downlink control channel is wider than the case where the frequency band is used.
  • a terminal including a control unit (control unit 270) that applies the interval of the monitoring opportunity and a reception unit (control signal / reference signal processing unit 240) that receives the downlink control channel at the monitoring opportunity.
  • One aspect of the present disclosure is that when a different frequency band (for example, FR4) different from the frequency band (FR1, FR2) including one or more frequency ranges is used, the control resource is more limited than when the frequency band is used.
  • a terminal (UE200) including a control unit (control unit 270) that applies a set multiplexing pattern and a reception unit (control signal / reference signal processing unit 240) that receives system information using the control resource set. ..
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10.
  • FIG. 2 is a diagram showing a frequency range used in the wireless communication system 10.
  • FIG. 3A is a diagram showing a configuration example of a wireless frame, a subframe, and a slot used in the wireless communication system 10.
  • FIG. 3B is a diagram showing a configuration example of a control resource set (CORESET) used in the wireless communication system 10.
  • FIG. 5 is a diagram showing an example (No.
  • FIG. 8 is a functional block configuration diagram of UE200.
  • FIG. 9 is a diagram showing an arrangement example of Type 0 PDCCH corresponding to Example 1 of Operation Example 3.
  • FIG. 10 is a diagram showing an arrangement example of SSB and Type 0 PDCCH corresponding to Example 3 of Operation Example 4.
  • FIG. 11 is a diagram showing an example of the hardware configuration of UE200.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10 according to the present embodiment.
  • the wireless communication system 10 is a wireless communication system according to 5G New Radio (NR), and includes Next Generation-Radio Access Network 20 (hereinafter, NG-RAN20, and terminal 200 (hereinafter, UE200, User Equipment)).
  • NR 5G New Radio
  • NG-RAN20 Next Generation-Radio Access Network 20
  • UE200 User Equipment
  • NG-RAN20 includes a radio base station 100 (hereinafter, gNB100).
  • gNB100 radio base station 100
  • the specific configuration of the wireless communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
  • NG-RAN20 actually includes multiple NG-RAN Nodes, specifically gNB (or ng-eNB), and is connected to a core network (5GC, not shown) according to 5G.
  • NG-RAN20 and 5GC may be simply expressed as "network”.
  • the gNB100 is a wireless base station that complies with 5G, and executes wireless communication according to UE200 and 5G.
  • the gNB100 and UE200 bundle Massive MIMO (Multiple-Input Multiple-Output) and multiple component carriers (CC) that generate a beam with higher directivity by controlling radio signals transmitted from multiple antenna elements. It is possible to support carrier aggregation (CA) used in the above, and dual connectivity (DC) in which the UE and each of the two NG-RAN Nodes communicate at the same time.
  • Massive MIMO Multiple-Input Multiple-Output
  • CC component carriers
  • CA carrier aggregation
  • DC dual connectivity
  • the wireless communication system 10 supports a plurality of frequency ranges (FR).
  • FIG. 2 shows the frequency range used in the wireless communication system 10.
  • the wireless communication system 10 corresponds to FR1 and FR2.
  • the frequency bands of each FR are as follows.
  • FR1 410 MHz to 7.125 GHz
  • FR2 24.25 GHz to 52.6 GHz
  • FR1 uses 15, 30 or 60 kHz
  • SCS Sub-Carrier Spacing
  • BW bandwidth
  • FR2 has a higher frequency than FR1, uses SCS of 60, or 120kHz (240kHz may be included), and uses a bandwidth (BW) of 50 to 400MHz.
  • SCS may be interpreted as numerology. Numerology is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.
  • the wireless communication system 10 also supports a higher frequency band than the FR2 frequency band. Specifically, the wireless communication system 10 supports a frequency band exceeding 52.6 GHz and up to 114.25 GHz.
  • FR4 belongs to the so-called EHF (extremely high frequency, also called millimeter wave).
  • EHF extreme high frequency, also called millimeter wave.
  • FR4 is a tentative name and may be called by another name.
  • FR4 may be further classified. For example, FR4 may be divided into a frequency range of 70 GHz or less and a frequency range of 70 GHz or more. Alternatively, FR4 may be divided into more frequency ranges or frequencies other than 70 GHz.
  • FR3 is a frequency band above 7.125 GHz and below 24.25 GHz.
  • FR3 and FR4 are different from the frequency band including FR1 and FR2, and are referred to as different frequency bands.
  • phase noise between carriers becomes a problem as described above. This may require the application of larger (wider) SCS or single carrier waveforms.
  • a narrower beam that is, a larger number of beams
  • larger (wider) SCS (and / or fewer FFT points), PAPR reduction mechanisms, or single carrier waveforms may be required to be more sensitive to PAPR and power amplifier non-linearity.
  • CP-OFDM Cyclic Prefix-Orthogonal Frequency Division Multiplexing
  • SCS Sub-Carrier Spacing
  • DFT-S-OFDM Discrete Fourier Transform having a larger Sub-Carrier Spacing
  • FIG. 3A shows a configuration example of a wireless frame, a subframe, and a slot used in the wireless communication system 10.
  • Table 1 shows the relationship between the SCS and the symbol period.
  • FIG. 3B shows a configuration example of the control resource set (CORESET) used in the wireless communication system 10.
  • CORESET control resource set
  • CORESET is placed in the active BWP (Bandwidth part).
  • a CORESET is composed of a plurality of resource blocks (RBs) in the frequency direction (which may be referred to as a frequency domain), and one or more (specifically) in a slot in the time direction (which may be referred to as a time domain). It is composed of two or three) symbols (OFDM symbols).
  • CORESET also includes CORESET # 0 for Type0-PDCCH CSS. Note that CORESET may be referred to as a term other than the control resource set, for example, simply a resource set, a time / frequency resource, a resource set provided by the MIB, or the like. Further, CORESET # 0 may be referred to as a first control resource set, an initial control resource set, or the like.
  • one or more common search spaces may be set, and the corresponding CORESET may be associated with each common search space.
  • CORESET may include the following parameters.
  • Resource element The smallest unit of a resource grid composed of one subcarrier in the frequency domain and one OFDM symbol in the time domain.
  • Resource element group Consists of one resource block (12 resource elements in the frequency domain) and one OFDM symbol in the time domain.
  • ⁇ REG bundle Consists of multiple REGs.
  • Control channel element Consists of multiple REGs.
  • the number of REG bundles in the CCE can vary.
  • ⁇ Aggregation level Indicates the number of CCEs assigned to PDCCH.
  • frequency domain and time domain parameters can be specified by radio resource control layer (RRC) signaling.
  • RRC radio resource control layer
  • search space There are two types of search space (which may be called search space): “UE-specific search space” and “common search space” (CSS).
  • UE-specific search space and “common search space” (CSS).
  • CSS common search space
  • the common search space is used by all terminals (UE) before a signal for all the terminals (eg, PDCCH for System Information Block (SIB)) or a dedicated channel is established (eg, random access procedure). It may be interpreted as the search space required to search for signaling messages that apply to all UEs during (running).
  • UE terminals
  • SIB System Information Block
  • Type0-PDCCH CSS is a subset of the dedicated PDCCH search space for acquiring SI messages (SIB), specifically, sending PDCCH for decrypting SI messages.
  • SIB SI messages
  • the UE200 determines that the Type0-PDCCH CSS control resource set (CORESET # 0) exists, it determines the number of consecutive resource blocks and the number of consecutive symbols in the Type0-PDCCH control resource set.
  • MIB Master Information Block
  • Tables 13-1 to 13-10 described in 3GPP TS38.213 v15 / 13 (that is, 3GPP Release 15).
  • the number of consecutive resource blocks and the number of consecutive symbols of CORESET # 0 are determined from the four most significant bits (controlResourceSetZero) of pdcch-ConfigSIB1 and the four least significant bits of pdcch-ConfigSIB1 included in the Master Information Block (MIB).
  • controlResourceSetZero a control resource set for Type 0 PDCCH
  • searchSpaceZero Type 0-PDCCH CSS
  • Table 1 and Table 2 can be used. Tables 1 and 2 are reprints of Tables 13-10 and 13-12 of 3GPP TS38.213.
  • the index (for example, "0") of controlResourceSetZero is selected so that the number of symbols of CORESET # 0 (N symb ⁇ CORESET) is "1" (see Table 1), and the search space per slot is selected.
  • the case where the index of searchSpaceZero (for example, “6”) is selected is shown when the number of sets is “2” and it is assumed that SSB and Type 0-PDCCH can exist in the same slot.
  • two PDCCH MOs and two SSBs are arranged (multiplexed) in a time division manner in the slot.
  • the index of controlResourceSetZero for example, "2" such that N symb ⁇ CORESET is "2" is selected (see Table 1), the number of search space sets per slot is "1", and SSB.
  • searchSpaceZero index for example, “4”
  • two SSBs are arranged in the slots by time division, and one PDCCHMO per slot is arranged (multiplexed) in different slots by time division.
  • Table 3 can be used instead of Table 2.
  • Table 3 is a reprint of Table 13-14 of 3GPP TS38.213.
  • the index of controlResourceSetZero for example, "6"
  • Tables 4 and 5 can be used. Tables 4 and 5 are reprints of Tables 13-8 and 13-15 of 3GPP TS38.213.
  • the index of controlResourceSetZero for example, “4”
  • “0” is selected for the index of searchSpaceZero (see Table 5).
  • the peak-to-average power ratio (PAPR), and the non-linearity of the power amplifier, and the above-mentioned searchSpaceZero and / Or the setting of controlResourceSetZero can be changed.
  • the periodicity of SSB (for initial access) and the periodicity of MO of Type 0 PDCCH can be changed.
  • the bandwidth (RB) and number of symbols of CORESET # 0 can be changed.
  • the association rule between SSB and Type 0 PDCCH MO can be changed.
  • FIG. 8 is a functional block configuration diagram of UE200.
  • the UE 200 includes a radio signal transmission / reception unit 210, an amplifier unit 220, a modulation / demodulation unit 230, a control signal / reference signal processing unit 240, an encoding / decoding unit 250, a data transmission / reception unit 260, and a control unit 270. ..
  • the wireless signal transmitter / receiver 210 transmits / receives a wireless signal according to NR.
  • the radio signal transmitter / receiver 210 corresponds to Massive MIMO, a CA that bundles and uses a plurality of CCs, and a DC that simultaneously communicates between a UE and each of two NG-RAN Nodes.
  • the wireless signal transmission / reception unit 210 can transmit / receive a wireless signal using a slot having a larger number of symbols than when FR1 or FR2 is used.
  • the number of symbols is specifically the number of OFDM symbols constituting the slot shown in FIG.
  • the wireless signal transmission / reception unit 210 can transmit / receive a wireless signal using a slot having a 28-symbol / slot configuration.
  • the amplifier unit 220 is composed of PA (Power Amplifier) / LNA (Low Noise Amplifier) and the like.
  • the amplifier unit 220 amplifies the signal output from the modulation / demodulation unit 230 to a predetermined power level. Further, the amplifier unit 220 amplifies the RF signal output from the radio signal transmission / reception unit 210.
  • the modulation / demodulation unit 230 executes data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB100 or other gNB).
  • the present Cyclic Prefix-Orthogonal Frequency Division Multiplexing CP-OFDM
  • DFT-S-OFDM Discrete Fourier Transform-Spread OFDM
  • the DFT-S-OFDM can be used not only for the uplink (UL) but also for the downlink (DL).
  • the control signal / reference signal processing unit 240 executes processing related to various control signals transmitted / received by the UE 200 and processing related to various reference signals transmitted / received by the UE 200.
  • control signal / reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, for example, control signals of the radio resource control layer (RRC). Further, the control signal / reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.
  • a predetermined control channel for example, control signals of the radio resource control layer (RRC).
  • RRC radio resource control layer
  • control signal / reference signal processing unit 240 executes processing using a reference signal (RS) such as Demodulation reference signal (DMRS) and Phase Tracking Reference Signal (PTRS).
  • RS reference signal
  • DMRS Demodulation reference signal
  • PTRS Phase Tracking Reference Signal
  • DMRS is a known reference signal (pilot signal) between a terminal-specific base station and a terminal for estimating a fading channel used for data demodulation.
  • PTRS is a terminal-specific reference signal for the purpose of estimating phase noise, which is a problem in high frequency bands.
  • the reference signal also includes Channel State Information-Reference Signal (CSI-RS) and Sounding Reference Signal (SRS).
  • CSI-RS Channel State Information-Reference Signal
  • SRS Sounding Reference Signal
  • control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel, Random Access Radio Network Temporary Identifier (RA-RNTI), Downlink Control Information (DCI)), and Physical. Broadcast Channel (PBCH) etc. are included.
  • PDCCH Physical Downlink Control Channel
  • PUCCH Physical Uplink Control Channel
  • RACH Random Access Channel
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • DCI Downlink Control Information
  • PBCH Broadcast Channel
  • the data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Downlink Shared Channel).
  • Data means data transmitted over a data channel.
  • control signal / reference signal processing unit 240 constitutes a receiving unit that receives system information (SI) using CORESET (including CORESET # 0). Further, the control signal / reference signal processing unit 240 constitutes a receiving unit that receives the PDCCH (downlink control channel) at the MO (monitoring opportunity) of the PDCCH.
  • SI system information
  • CORESET # 0 CORESET # 0
  • control signal / reference signal processing unit 240 acquires the configuration information of CORESET (see FIG. 3B) and the search space, and determines the search space including the PDCCH that schedules the SIB.
  • control signal / reference signal processing unit 240 acquires controlResourceSetZero and searchSpaceZero, and determines Type0-PDCCH CSS including Type0 PDCCH that schedules SIB.
  • the control signal / reference signal processing unit 240 attempts to receive the SIB via the PDCCH in the Type 0 PDCCH MO (see FIGS. 4 to 7) based on the determined Type 0-PDCCH CSS.
  • the coding / decoding unit 250 executes data division / concatenation and channel coding / decoding for each predetermined communication destination (gNB100 or other gNB).
  • the coding / decoding unit 250 divides the data output from the data transmitting / receiving unit 260 into a predetermined size, and executes channel coding for the divided data. Further, the coding / decoding unit 250 decodes the data output from the modulation / demodulation unit 230 and concatenates the decoded data.
  • the data transmission / reception unit 260 executes transmission / reception of Protocol Data Unit (PDU) and Service Data Unit (SDU).
  • the data transmitter / receiver 260 is a PDU / SDU in a plurality of layers (such as a medium access control layer (MAC), a wireless link control layer (RLC), and a packet data convergence protocol layer (PDCP)). Assemble / disassemble the.
  • the data transmission / reception unit 260 executes data error correction and retransmission control based on the hybrid ARQ (Hybrid automatic repeat request).
  • the control unit 270 controls each functional block that constitutes the UE200.
  • the outline of the function of the control unit 270 will be described below.
  • the details of the operation of UE200 executed by the control unit 270 will be described later.
  • the control unit 270 uses a different frequency band (for example, FR3, FR4) different from the frequency band including one or more frequency ranges (for example, FR1, FR2), the number of the control unit 270 is larger than that when the frequency band is used.
  • Symbols can be applied to CORESET (Control Resource Set). That is, the control unit 270 can use a larger number of symbols (N symb ⁇ CORESET) for CORESET # 0, especially when using a high frequency band such as FR4.
  • control unit 270 can apply a smaller number or a larger number of resource blocks to CORESET than when the frequency band is used. That is, the control unit 270 may use a smaller or larger number of resource blocks (N RB ⁇ CORESET) for CORESET # 0, especially when using a high frequency band such as FR4.
  • control unit 270 can apply a wider MO (monitoring opportunity) interval of the PDCCH (downlink control channel) than when the frequency band is used. That is, the control unit 270 may use a wider Type 0 PDCCH MO interval (which may be expressed as periodicity), especially when using a high frequency band such as FR4.
  • MO monitoring opportunity
  • control unit 270 can also apply a multiplexing pattern of SSB and CORESET (control resource set), which is more limited than when the frequency band is used. That is, the control unit 270 can limit the number or contents of the Multiplexing patterns (see Table 2, etc.) for CORESET # 0, especially when using a high frequency band such as FR4.
  • the number of symbols of CORESET # 0 (N symb ⁇ CORESET) may not be sufficient.
  • the RB for CORESET # 0 may be too large (or too small) (the bandwidth of the initial active DL BWP may be too wide (or too narrow)).
  • Type 0 PDCCH MO for different beams may need to be separated by a beam switching gap.
  • the UE200 can apply useful settings while suppressing overhead.
  • the UE 200 may apply at least one of the above-described operation examples, or may apply a plurality of operation examples at the same time.
  • N symb ⁇ CORESET for CORESET # 0 a larger number of symbols, for example, a value exceeding "3" (N symb ⁇ CORESET> 3) is supported.
  • N symb ⁇ CORESET> 3 is an example, and it is sufficient that N symb ⁇ CORESET is larger when a high frequency band such as FR4 is used than when an existing frequency band such as FR1 and FR2 is used.
  • the setting of N symb ⁇ CORESET may depend on the DL waveform setting (for example, CP-OFDM or DFT-S-OFDM) notified by the MIB, or may be specified as a specification for each frequency band. Alternatively, it may depend on the SCS of the DL notified by the MIB or specified as a specification for each frequency band.
  • dmrs-TypeA-position is one of the fields contained in the MIB and indicates the position of the (first) DM-RS of DL and UL. Specifically, the candidate positions (# 2 or # 3) in FR1 and FR2 may be changed to specify different candidate positions. Alternatively, the dmrs-TypeA-position may be used or reserved for other different purposes when using a high frequency band such as FR4.
  • N RB ⁇ CORESET for CORESET # 0 a smaller number of RBs, for example, a value less than "24" (N RB ⁇ CORESET ⁇ 24) is supported.
  • N RB ⁇ CORESET ⁇ 24 is exemplary, FR1, than with existing frequency bands, such as FR2, be smaller that N RB ⁇ CORESET in case of using a high frequency band, such as FR4.
  • N RB ⁇ CORESET for CORESET # 0 may support a larger number of RBs, for example a value greater than "96" (N RB ⁇ CORESET> 96).
  • the N RB ⁇ CORESET setting depends on the DL waveform setting (for example, CP-OFDM or DFT-S-OFDM) notified by the MIB, similar to the N symb ⁇ CORESET described in the operation example 1. Alternatively, it may be specified as a specification for each frequency band. Alternatively, it may depend on the SCS of the DL notified by the MIB or specified as a specification for each frequency band.
  • the bandwidth of the Type 0 PDCCH may be specified in advance as a specification or may be notified by the MIB.
  • the number of RBs does not have to be based on RB.
  • the frequency bandwidth (MHz, etc.) of the single carrier waveform may be directly indicated, or in the case of code division multiple access (CDMA), the diffusion rate is used to indicate the amount of resources in the corresponding frequency domain. You may.
  • the following new Type 0 PDCCH MO is set in consideration of the beam switching gap in UE200.
  • Example 1 In the case of searchSpaceZero where two common search space sets (CSS sets) are specified per slot, the first symbol of the second Type 0 PDCCH located in the same slot is the first symbol in the same slot. Separated by at least one symbol gap from the last symbol of Type 0 PDCCH.
  • searchSpaceZero supports only one common search space set per slot By applying such searchSpaceZero settings, the time required for beam switching can be secured, and UE200 is more reliable. Type 0 PDCCH can be detected.
  • FIG. 9 shows an arrangement example of Type 0 PDCCH corresponding to Example 1 of Operation Example 3. Specifically, the left side of FIG. 9 shows an example of arranging Type 0 PDCCH according to Release 15, and the right side shows an example of arranging Type 0 PDCCH according to Example 1 of this operation example.
  • At least one symbol gap is provided between Type 0 PDCCHs adjacent in the time domain.
  • the number of symbol gaps is not limited to one, and may be two or more.
  • the application of the Multiplexing pattern is restricted.
  • the application of the Multiplexing pattern can be restricted as follows.
  • Multiplexing pattern 2, 3 is supported, which one is applied depends on the DL waveform setting (for example, CP-OFDM or DFT-S-OFDM) notified by the MIB. It may be specified as a specification for each frequency band. Alternatively, it may be notified by the MIB or depend on the SCS of the DL specified as a specification for each frequency band, or may be set by the index of controlResourceSetZero as in FR1 / FR2.
  • the DL waveform setting for example, CP-OFDM or DFT-S-OFDM
  • FIG. 10 shows an arrangement example of SSB and Type 0 PDCCH corresponding to Example 3 of Operation Example 4. As shown in FIG. 10, for example, SSB (# 0) and Type 0 PDCCH (# 0) corresponding to SSB (# 0) are mapped to consecutive symbols.
  • At least one symbol gap is provided between SSB (# 0) and SSB (# 1), specifically, Type 0 PDCCH (# 1).
  • Example 1 Only the same SCS is supported for SSB and Type 0 PDCCH.
  • a combination of 960kHz SCS for SSB and 480kHz SCS for PDCCH is supported.
  • the combination of 960kHz SCS for SSB and 240kHz SCS for PDCCH is not supported.
  • Example 2 contributes to the reduction of the beam sweep overhead (that is, scheduling delay) of SSB, and Example 3 makes it possible to select an SCS resistant to phase noise for PDCCH.
  • Example 4 Only one SCS combination is supported for each frequency band.
  • the allocation of some MIB bits (for example, 4-bit searchSpaceZero setting) is changed.
  • the MIB bit allocation can be changed as follows.
  • Example 1 The 4-bit searchSpaceZero setting is used for other purposes.
  • controlResourceSetZero For example, some bits are used to set controlResourceSetZero and / or DL waveform.
  • Example 2 The 4-bit searchSpaceZero setting (and some other bits may be included) is deleted from the MIB. As a result, the MIB size is smaller than the MIB size of FR1 or FR2.
  • Example 3 1-bit dmrs-TypeA-position is deleted from the MIB or used for other purposes (similar to operation example 1).
  • Example 4 1-bit "subCarrierSpacingCommon" is deleted from the MIB or used for other purposes.
  • SubCarrierSpacingCommon indicates SIB1 and subcarrier spacing (SCS) for broadcast SI messages.
  • the UE200 may use a larger number of N symb ⁇ CORESET when using a high frequency band such as FR4 than when using a frequency band such as FR1 / FR2.
  • UE200 can apply CORESET, which is used to acquire appropriate system information. As a result, the UE200 can apply settings useful for acquiring the SIB while suppressing overhead even when the different frequency band is used.
  • the UE200 may also use a smaller or larger number of N RB ⁇ CORESET when using a high frequency band such as FR4 than when using a frequency band such as FR1 / FR2. As a result, the UE200 can apply settings useful for acquiring the SIB while suppressing overhead even when the different frequency band is used.
  • the UE200 can apply Type 0 PDCCHMO, which is wider when using a high frequency band such as FR4 than when using a frequency band such as FR1 / FR2.
  • UE200 can apply Common Search Space (CSS) used for receiving an appropriate Type 0 PDCCH.
  • SCS Common Search Space
  • the UE200 can reliably receive the Type 0 PDCCH while suppressing the overhead even when the different frequency band is used.
  • the UE200 can apply a more restricted CORESET # 0 multiplexing pattern when using a high frequency band such as FR4 than when using a frequency band such as FR1 / FR2. As a result, the UE200 can apply settings useful for acquiring the SIB while suppressing overhead even when the different frequency band is used.
  • a high frequency band such as FR4 that is, a frequency band exceeding 52.6 GHz has been described as an example, but at least one of the above-mentioned operation examples is applied to another frequency range such as FR3. It doesn't matter if it is done.
  • FR4 may be divided into a frequency range of 70 GHz or less and a frequency range of 70 GHz or more, and (Proposal 1) to (Proposal 3) are applied to the frequency range of 70 GHz or more, and 70 GHz or less.
  • the correspondence between the proposal and the frequency range may be changed as appropriate, such as the proposal being partially applied to the frequency range of.
  • each functional block is realized by any combination of at least one of hardware and software.
  • the method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by using two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption.
  • broadcasting notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these.
  • a functional block that makes transmission function is called a transmitting unit or a transmitter.
  • the method of realizing each is not particularly limited.
  • FIG. 11 is a diagram showing an example of the hardware configuration of UE200.
  • the UE 200 may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the device may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
  • Each functional block of UE200 (see FIG. 8) is realized by any hardware element of the computer device or a combination of the hardware elements.
  • each function in the UE 200 is such that the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the memory 1002 to control the communication by the communication device 1004 and the memory 1002. And by controlling at least one of reading and writing of data in the storage 1003.
  • predetermined software program
  • Processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
  • CPU central processing unit
  • the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
  • a program program code
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001.
  • Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one such as ReadOnlyMemory (ROM), ErasableProgrammableROM (EPROM), Electrically ErasableProgrammableROM (EEPROM), and RandomAccessMemory (RAM). May be done.
  • the memory 1002 may be called a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, or the like that can execute the method according to the embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disk such as Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
  • Storage 1003 may be referred to as auxiliary storage.
  • the recording medium described above may be, for example, a database, server or other suitable medium containing at least one of the memory 1002 and the storage 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • Communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by the bus 1007 for communicating information.
  • the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
  • the device includes hardware such as a microprocessor, a digital signal processor (Digital Signal Processor: DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA).
  • the hardware may implement some or all of each functional block.
  • processor 1001 may be implemented using at least one of these hardware.
  • information notification includes physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), upper layer signaling (eg, RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block)). (MIB), System Information Block (SIB)), other signals or combinations thereof.
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC signaling may also be referred to as an RRC message, for example, RRC Connection Setup. ) Message, RRC Connection Reconfiguration message, etc. may be used.
  • LTE LongTermEvolution
  • LTE-A LTE-Advanced
  • SUPER3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • FutureRadioAccess FAA
  • NewRadio NR
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB UltraMobile Broadband
  • IEEE802.11 Wi-Fi (registered trademark)
  • IEEE802.16 WiMAX®
  • IEEE802.20 Ultra-WideBand (UWB), Bluetooth®, and other systems that utilize appropriate systems and at least one of the next generation systems extended based on them.
  • a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation performed by the base station in the present disclosure may be performed by its upper node (upper node).
  • various operations performed for communication with the terminal are performed by the base station and other network nodes other than the base station (for example, MME or). It is clear that it can be done by at least one of (but not limited to, S-GW, etc.).
  • S-GW network nodes
  • the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information and signals can be output from the upper layer (or lower layer) to the lower layer (or upper layer).
  • Input / output may be performed via a plurality of network nodes.
  • the input / output information may be stored in a specific location (for example, memory) or may be managed using a management table.
  • the input / output information can be overwritten, updated, or added.
  • the output information may be deleted.
  • the input information may be transmitted to another device.
  • the determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
  • the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is implicitly (for example, the notification of the predetermined information is not performed). May be good.
  • Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website, where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twist pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twist pair, Digital Subscriber Line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • a channel and a symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
  • the radio resource may be one indicated by an index.
  • Base Station BS
  • Wireless Base Station Wireless Base Station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (for example, three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio)). Communication services can also be provided by Head: RRH).
  • a base station subsystem eg, a small indoor base station (Remote Radio)
  • Communication services can also be provided by Head: RRH).
  • cell refers to a base station that provides communication services in this coverage, and part or all of the coverage area of at least one of the base station subsystems.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of a base station and a mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a mobile station (user terminal, the same applies hereinafter).
  • communication between a base station and a mobile station has been replaced with communication between a plurality of mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the mobile station may have the function of the base station.
  • words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
  • the upstream channel, the downstream channel, and the like may be read as a side channel.
  • the mobile station in the present disclosure may be read as a base station.
  • the base station may have the functions of the mobile station.
  • the radio frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.
  • the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
  • Numerology includes, for example, SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, wireless frame configuration, transmission / reception.
  • SCS SubCarrier Spacing
  • TTI transmission time interval
  • At least one of a specific filtering process performed by the machine in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
  • the slot may be composed of one or more symbols (Orthogonal Frequency Division Multiple Access (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain. Slots may be unit of time based on numerology.
  • OFDM Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. Further, the mini slot may be called a sub slot. A minislot may consist of a smaller number of symbols than the slot.
  • PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
  • the wireless frame, subframe, slot, mini slot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
  • one subframe may be referred to as a transmission time interval (TTI)
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI slot or one minislot
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • the base station schedules each user terminal to allocate wireless resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • TTIs shorter than normal TTIs may also be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
  • long TTIs eg, normal TTIs, subframes, etc.
  • short TTIs eg, shortened TTIs, etc.
  • TTI length the TTI length of long TTIs and 1 ms. It may be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • One or more RBs include a physical resource block (Physical RB: PRB), a sub-carrier group (Sub-Carrier Group: SCG), a resource element group (Resource Element Group: REG), a PRB pair, an RB pair, and the like. May be called.
  • Physical RB Physical RB: PRB
  • SCG sub-carrier Group
  • REG resource element group
  • PRB pair an RB pair, and the like. May be called.
  • the resource block may be composed of one or a plurality of resource elements (ResourceElement: RE).
  • RE resource elements
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • Bandwidth Part (which may also be called partial bandwidth, etc.) can also represent a subset of consecutive common resource blocks (RBs) for a neurology in a carrier.
  • RBs common resource blocks
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • BWP for UL
  • DL BWP BWP for DL
  • One or more BWPs may be set in one carrier for the UE.
  • At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
  • the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in RB.
  • the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
  • the connection or connection between the elements may be physical, logical, or a combination thereof.
  • connection may be read as "access”.
  • the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain.
  • Electromagnetic energies with wavelengths in the microwave and light (both visible and invisible) regions can be considered to be “connected” or “coupled” to each other.
  • the reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot (Pilot) depending on the applicable standard.
  • RS Reference Signal
  • Pilot pilot
  • references to elements using designations such as “first”, “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.
  • determining and “determining” used in this disclosure may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as “judgment” or “decision”.
  • judgment and “decision” mean that “resolving”, “selecting”, “choosing”, “establishing”, “comparing”, etc. are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include that some action is regarded as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming”, “expecting”, “considering” and the like.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
  • Radio communication system 20 NG-RAN 100 gNB 200 UE 210 Radio signal transmission / reception unit 220 Amplifier unit 230 Modulation / demodulation unit 240 Control signal / reference signal processing unit 250 Coding / decoding unit 260 Data transmission / reception unit 270 Control unit 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus

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