WO2022163840A1 - Terminal et système de communication sans fil - Google Patents

Terminal et système de communication sans fil Download PDF

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Publication number
WO2022163840A1
WO2022163840A1 PCT/JP2022/003441 JP2022003441W WO2022163840A1 WO 2022163840 A1 WO2022163840 A1 WO 2022163840A1 JP 2022003441 W JP2022003441 W JP 2022003441W WO 2022163840 A1 WO2022163840 A1 WO 2022163840A1
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WIPO (PCT)
Prior art keywords
scs
ssb
synchronization signal
coreset
signal block
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PCT/JP2022/003441
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English (en)
Japanese (ja)
Inventor
浩樹 原田
尚哉 芝池
真由子 岡野
聡 永田
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株式会社Ｎｔｔドコモ
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Publication of WO2022163840A1 publication Critical patent/WO2022163840A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Definitions

  • the present disclosure relates to terminals that perform wireless communication, and more particularly to terminals and wireless communication systems that support wide subcarrier intervals such as 960 kHz.
  • the 3rd Generation Partnership Project (3GPP) has specified the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and the next generation specification called Beyond 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G
  • 3GPP Release 15 and Release 16 specify operation in multiple frequency ranges, specifically bands including FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz) .
  • Non-Patent Document 1 NR that exceeds 52.6 GHz and supports up to 71 GHz is being studied. Furthermore, Beyond 5G, 5G Evolution or 6G (Release-18 and later) aims to support frequency bands above 71GHz as well.
  • Synchronization signal block (SS (Synchronization Signal)/PBCH (Physical Broadcast CHannel) Block)
  • CORESET control resource sets
  • the SCS applied to CORESET 0 is notified to the terminal (User Equipment, UE) by the Master Information Block (MIB) (specifically, subCarrierSpacingCommon), but since the number of bits is limited (1 bit), There is a problem that it is difficult to notify many SCS values.
  • MIB Master Information Block
  • An object of the present invention is to provide a terminal and a radio communication system capable of quickly and accurately determining subcarrier intervals applied to resource sets.
  • One aspect of the present disclosure is that when using a receiving unit (radio signal transmitting/receiving unit 210) that receives a synchronization signal block and a frequency band different from a frequency band that includes one or more frequency ranges, the synchronization signal block for A terminal (UE 200) including a control section (control section 270) that determines a second subcarrier interval for a specific control resource set based on the first subcarrier interval.
  • a receiving unit radio signal transmitting/receiving unit 210) that receives a synchronization signal block and a frequency band different from a frequency band that includes one or more frequency ranges
  • the synchronization signal block for A terminal including a control section (control section 270) that determines a second subcarrier interval for a specific control resource set based on the first subcarrier interval.
  • One aspect of the present disclosure is that when using a receiving unit (radio signal transmitting/receiving unit 210) that receives a synchronization signal block and a frequency band different from a frequency band that includes one or more frequency ranges, the synchronization signal block for A terminal (UE 200) including a control section (control section 270) that determines a reporting method of a second subcarrier interval for a specific control resource set based on the first subcarrier interval.
  • One aspect of the present disclosure is that when using a receiving unit (radio signal transmitting/receiving unit 210) that receives a synchronization signal block and a frequency band different from a frequency band that includes one or more frequency ranges, the synchronization signal block for A terminal (UE 200) comprising a control section (control section 270) that determines a method of notifying an offset in the frequency direction between the synchronization signal block and a specific control resource set based on the first subcarrier interval.
  • a receiving unit radio signal transmitting/receiving unit 210) that receives a synchronization signal block and a frequency band different from a frequency band that includes one or more frequency ranges
  • the synchronization signal block for A terminal comprising a control section (control section 270) that determines a method of notifying an offset in the frequency direction between the synchronization signal block and a specific control resource set based on the first subcarrier interval.
  • FIG. 1 is an overall schematic configuration diagram of a radio communication system 10.
  • FIG. 2 is a diagram illustrating frequency ranges used in wireless communication system 10.
  • FIG. 3 shows a configuration example of radio frames, subframes and slots used in the radio communication system 10.
  • Table 1 is a diagram showing the relationship between the SCS and the symbol period.
  • FIG. 4 is a functional block configuration diagram of UE200.
  • FIG. 5 is a diagram showing a schematic communication sequence regarding detection and determination of SSB-SCS and CORESET 0-SCS.
  • FIG. 6 is a diagram illustrating an example of the relationship between SSB-SCS and subCarrierSpacingCommon according to Operation Example 1.
  • FIG. 7 is a diagram illustrating an example of the relationship between SSB-SCS and subCarrierSpacingCommon according to Operation Example 2.
  • FIG. 8 is a diagram illustrating an example of the relationship among SSB-SCS, CORESET 0-SCS, k SSB , and ssb-SubcarrierOffset according to Operation Example 3.
  • FIG. 9 is a diagram showing an example of the hardware configuration of UE200.
  • FIG. 1 is an overall schematic configuration diagram of a radio communication system 10 according to the present embodiment.
  • the radio communication system 10 is a radio communication system according to 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter, NG-RAN 20, and a terminal 200 (hereinafter, UE 200, User Equipment, UE).
  • NG-RAN 20 Next Generation-Radio Access Network
  • UE 200 User Equipment
  • the radio communication system 10 may be a radio communication system according to a scheme called Beyond 5G, 5G Evolution, or 6G.
  • NG-RAN 20 includes a radio base station 100 (hereinafter gNB 100).
  • gNB 100 radio base station 100
  • the specific configuration of the radio communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
  • NG-RAN 20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN 20 and 5GC may simply be referred to as a "network”.
  • gNBs or ng-eNBs
  • 5GC 5G-compliant core network
  • the gNB100 is a 5G-compliant radio base station that performs 5G-compliant radio communication with the UE200.
  • the gNB100 and UE200 control the radio signals transmitted from multiple antenna elements to generate antenna beams with higher directivity (hereafter, beam BM), Massive MIMO (Multiple-Input Multiple-Output), multiple It is possible to support carrier aggregation (CA), which uses component carriers (CC) in a bundle, and dual connectivity (DC), which simultaneously communicates between a UE and two NG-RAN Nodes.
  • beam BM directivity
  • Massive MIMO Multiple-Input Multiple-Output
  • CA carrier aggregation
  • CC component carriers
  • DC dual connectivity
  • the gNB 100 can transmit multiple beams BM with different transmission directions (simply called directions, radiation directions, coverage, etc.) in a space- and time-division manner. Note that the gNB 100 may transmit multiple beams BM at the same time.
  • the wireless communication system 10 may support multiple frequency ranges (FR).
  • FIG. 2 shows the frequency ranges used in wireless communication system 10. As shown in FIG.
  • FR1 410MHz to 7.125GHz
  • FR2 24.25 GHz to 52.6 GHz
  • SCS Sub-Carrier Spacing
  • BW bandwidth
  • FR2 is a higher frequency than FR1, with an SCS of 60 or 120 kHz (240 kHz may be included) and a bandwidth (BW) of 50-400 MHz may be used.
  • 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 frequency bands higher than the FR2 frequency band. Specifically, the wireless communication system 10 supports frequency bands exceeding 52.6 GHz and up to 71 GHz. Such high frequency bands may be conveniently referred to as "FR2x". again, A high frequency band may be referred to as a different frequency band that is different from the frequency band containing one or more frequency ranges (FR).
  • Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread (DFT- S-OFDM) may be applied.
  • CP-OFDM Cyclic Prefix-Orthogonal Frequency Division Multiplexing
  • DFT- S-OFDM Discrete Fourier Transform-Spread
  • FIG. 3 shows a configuration example of radio frames, subframes and slots used in the radio communication system 10. As shown in FIG. Table 1 also shows the relationship between SCS and symbol period.
  • the symbol period may also be referred to as symbol length, time direction, time domain, or the like.
  • the frequency direction may also be referred to as frequency domain, resource block, subcarrier, BWP (Bandwidth part), and the like.
  • the number of symbols constituting one slot does not necessarily have to be 14 symbols (for example, 28 or 56 symbols). Also, the number of slots per subframe may vary depending on the SCS.
  • an SSB (SS/PBCH Block) composed of a synchronization signal (SS: Synchronization Signal) and a physical downlink channel (PBCH: Physical Broadcast CHannel) may be used.
  • SS Synchronization Signal
  • PBCH Physical Broadcast CHannel
  • the SSB is periodically transmitted from the network mainly for the UE 200 to detect the cell ID and reception timing at the start of communication.
  • SSB is also used for reception quality measurement of each cell.
  • As the SSB transmission period (periodicity), 5, 10, 20, 40, 80, 160 milliseconds, etc. may be defined. Note that the initial access UE 200 may assume a transmission cycle of 20 milliseconds.
  • the network can notify the actually transmitted SSB index indication (ssb-PositionsInBurst) to UE 200 through system information (SIB1) or radio resource control layer (RRC) signaling.
  • SIB1 system information
  • RRC radio resource control layer
  • PSS Primary SS
  • SSS Secondary SS
  • PSS is a known signal that UE 200 attempts to detect first in the cell search procedure.
  • SSS is a known signal that is sent to detect physical cell IDs in cell search procedures.
  • the PBCH After detecting the SS/PBCH Block, the PBCH contains the System Frame Number (SFN) and an index to identify the symbol positions of multiple SS/PBCH Blocks within a half-frame (5 ms). It includes information necessary for UE200 to establish frame synchronization with the NR cell formed by gNB100.
  • SFN System Frame Number
  • the PBCH can also contain system parameters required to receive system information (SIB, Master Information Block (MIB) may be included).
  • SIB System Information Block
  • MIB Master Information Block
  • the SSB also includes a broadcast channel demodulation reference signal (DMRS for PBCH).
  • DMRS for PBCH is a known signal sent to measure radio channel conditions for PBCH demodulation.
  • Downlink (DL) radio resources used for PDCCH (Physical Downlink Control Channel) transmission can be specified by control resource sets. That is, CORESET may be interpreted as a set of physical resources (specifically, specific regions on the DL resource grid) and parameters used to transmit PDCCH (including DCI).
  • UE 200 can assume the specific area to which CORESET is assigned based on the timing and period pointed out by the Common Search Space (CSS).
  • CSS Common Search Space
  • CORESET may include the following parameters.
  • - Resource element The minimum unit of a resource grid consisting of one subcarrier in the frequency domain and one OFDM symbol in the time domain - Resource element group (REG): One resource block (12 resource elements in the frequency domain ) and one OFDM symbol in the time domain REG bundle: composed of multiple REGs.
  • the bundle size can be specified by the parameter 'L', where L can be determined by the radio resource control layer (RRC) parameter (reg-bundle-size).
  • RRC radio resource control layer
  • Control channel element Consists of multiple REGs.
  • the number of REG bundles included in the CCE may be variable.
  • ⁇ Aggregation Level Indicates the number of CCEs assigned to the PDCCH. 3GPP Release-15, 16 specifies 1, 2, 4, 8, 16, but the wireless communication system 10 may use even larger values.
  • the UE 200 determines that CORESET for Type0-PDCCH CSS exists based on the received master information block (MIB), the CORESET (CORESET 0 or Remaining Minimum System Information (RMSI) CORESET) is called. ), determine a number of consecutive resource blocks (RBs) and symbols for Based on the determined RBs and symbols, the UE 200 sets PDCCH, specifically Type 0 PDCCH monitoring opportunities (MOs) for system information block (SIB) decoding.
  • MIB master information block
  • MOs Type 0 PDCCH monitoring opportunities
  • CORESET 0 is a special CORESET that is different from normal CORESET. Such a specific CORESET may be interpreted as a CORESET transmitting PDCCH for SIB1 scheduling. CORESET 0 cannot be specified by RRC as it is used before RRC signaling is sent.
  • FIG. 4 is a functional block diagram of the UE200.
  • the UE 200 includes a radio signal transmission/reception unit 210, an amplifier unit 220, a modem 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 radio signal transmitting/receiving unit 210 transmits/receives radio signals according to NR.
  • the radio signal transmitting/receiving unit 210 supports Massive MIMO, CA that bundles multiple CCs, and DC that simultaneously communicates between the UE and each of the two NG-RAN Nodes.
  • the radio signal transmitting/receiving unit 210 can receive a synchronization signal block (SSB).
  • SSB synchronization signal block
  • the radio signal transmitting/receiving unit 210 constitutes a receiving unit.
  • the radio signal transmitting/receiving unit 210 receives the SSB transmitted from the gNB 100 using the beam BM (see FIG. 1).
  • the beam BM may be a directional beam or an omnidirectional beam.
  • the maximum number of beams used for SSB transmission is, for example, 64 (for 3GPP Release 15 (FR2)), but the maximum number of beams may be extended to cover a certain geographical area with narrow beams.
  • the number of SSBs is 64 or more, and an index for identifying SSBs (SSB index) may use values after #64.
  • the amplifier section 220 is configured by a PA (Power Amplifier)/LNA (Low Noise Amplifier) and the like. Amplifier section 220 amplifies the signal output from modem section 230 to a predetermined power level. In addition, amplifier section 220 amplifies the RF signal output from radio signal transmission/reception section 210 .
  • PA Power Amplifier
  • LNA Low Noise Amplifier
  • the modulation/demodulation unit 230 executes data modulation/demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB 100, etc.).
  • the modem unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread (DFT-S-OFDM). Also, DFT-S-OFDM may be used not only for uplink (UL) but also for downlink (DL).
  • the control signal/reference signal processing unit 240 executes processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and 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, radio resource control layer (RRC) control signals. Also, the control signal/reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.
  • RRC radio resource control layer
  • the control signal/reference signal processing unit 240 executes processing using reference signals (RS) such as Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS).
  • RS reference signals
  • DMRS Demodulation Reference Signal
  • PTRS Phase Tracking Reference Signal
  • a DMRS is a known reference signal (pilot signal) between a terminal-specific base station and a terminal for estimating the fading channel used for data demodulation.
  • PTRS is a terminal-specific reference signal for estimating phase noise, which is a problem in high frequency bands.
  • reference signals may include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for position information.
  • CSI-RS Channel State Information-Reference Signal
  • SRS Sounding Reference Signal
  • PRS Positioning Reference Signal
  • Control channels include control channels and data channels.
  • Control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel, Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI)), and Physical Broadcast Channel (PBCH) and the like may be included.
  • PDCCH Physical Downlink Control Channel
  • PUCCH Physical Uplink Control Channel
  • RACH Random Access Channel
  • DCI Downlink Control Information
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • PBCH Physical Broadcast Channel
  • data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel).
  • Data may refer to data transmitted over a data channel. Data may mean user data, and control may mean various control signals transmitted via a control channel.
  • PUCCH may be interpreted as a UL physical channel used for transmitting UCI (Uplink Control Information).
  • UCI can be sent on either PUCCH or PUSCH depending on the situation.
  • Downlink control information may always be transmitted by PDCCH and may not be transmitted via PDSCH.
  • the UCI may include at least one of Hybrid automatic repeat request (HARQ) ACK/NACK, scheduling request (SR) from UE 200, and Channel State Information (CSI).
  • HARQ Hybrid automatic repeat request
  • SR scheduling request
  • CSI Channel State Information
  • timing and radio resources for transmitting PUCCH may be controlled by DCI in the same way as data channels.
  • the encoding/decoding unit 250 performs data segmentation/concatenation, channel coding/decoding, etc. for each predetermined communication destination (gNB 100 or other gNB).
  • the encoding/decoding unit 250 divides the data output from the data transmission/reception unit 260 into pieces of a predetermined size, and performs channel coding on the divided data. Also, encoding/decoding section 250 decodes the data output from modem section 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). Specifically, the data transmitting/receiving unit 260 performs PDU/SDU in multiple layers (medium access control layer (MAC), radio link control layer (RLC), packet data convergence protocol layer (PDCP), etc.). Assemble/disassemble etc. The data transmission/reception unit 260 also performs data error correction and retransmission control based on hybrid ARQ (Hybrid automatic repeat request).
  • hybrid ARQ Hybrid automatic repeat request
  • the control unit 270 controls each functional block that configures the UE200.
  • the control unit 270 performs control regarding setting of subcarrier spacing (SCS) for synchronization signal blocks (SSB) and SCS for data and/or control.
  • SCS subcarrier spacing
  • SSB synchronization signal blocks
  • SCS data and/or control.
  • control unit 270 uses a high frequency band such as FR2x, the control unit 270 controls the SCS (first subcarrier spacing) of SSB and a specific control resource set, specifically, CORESET 0 It may be assumed that there is a certain correlation with the SCS (second subcarrier spacing) of .
  • the SCS of SSB (hereinafter referred to as SSB-SCS) may be interpreted as the SCS for SSB, specifically, the SCS applied to the transmission of SSB.
  • the SCS of CORESET 0 (hereinafter, CORESET 0-SCS) may be interpreted as the SCS for CORESET 0, specifically the SCS applied to the transmission of CORESET 0.
  • such SCS settings are not limited to high frequency bands such as FR2x (even higher frequency bands are possible), but different frequency bands that include one or more frequency ranges (FR1, FR2). may be applied when used.
  • control unit 270 may determine CORESET 0-SCS based on SSB-SCS. Specifically, control section 270 may determine the value of CORESET 0-SCS associated with SSB-SCS according to the value of SSB-SCS detected by receiving SSB.
  • control unit 270 may change the interpretation of the subCarrierSpacingCommon value included in the MIB according to the detected SSB-SCS value.
  • control unit 270 may determine the method of notifying CORESET 0-SCS based on SSB-SCS. Specifically, control section 270 may assume that the method of notifying CORESET 0-SCS from the network changes according to the value of detected SSB-SCS.
  • control unit 270 determines whether CORESET 0-SCS is notified only by subCarrierSpacingCommon or CORESET 0-SCS is notified using subCarrierSpacingCommon and another field, depending on SSB-SCS. may be determined.
  • a part of pdcch-ConfigSIB1 a part of systemFrameNumber (see 3GPP TS38.331), or a spare bit (spare) may be used.
  • control unit 270 may determine a method of notifying the offset in the frequency direction between SSB-SCS and CORESET 0-SCS based on SSB-SCS. Specifically, control section 270 uses a method for notifying the network of the subcarrier offset between the RB of SSB and the RB of CORESET 0 according to the detected SSB-SCS value and CORESET 0-SCS value. can be assumed to change.
  • control section 270 may assume that the reporting method of k SSB indicating the subcarrier offset will change.
  • k SSB is a layer 1 parameter and may correspond to ssb-SubcarrierOffset.
  • ssb-SubcarrierOffset may be interpreted as the frequency domain offset between the SSB and the entire RB grid in number of subcarriers.
  • SSB-SCS and CORESET 0-SCS are expected to support at least 120kHz.
  • SCS 240 kHz, 480 kHz, 960 kHz for SSB-SCS, and 480 kHz, 960 kHz for CORESET 0-SCS are also assumed.
  • UE200 can recognize CORESET 0-SCS from subCarrierSpacingCommon included in MIB in PBCH after detecting SSB, and detect PDCCH in CORESET 0.
  • FIG. 5 shows a schematic communication sequence regarding detection and determination of SSB-SCS and CORESET 0-SCS. Note that the following operations may be applied when using a high frequency band such as FR2x (or even higher frequency bands).
  • the network transmits SSB toward UE 200 (step 1).
  • the SSB (PBCH) may contain the MIB. Any one of a plurality of SCSs may be applied to the SSB, as described above.
  • the UE 200 can detect the SCS (SSB-SCS) applied to the SSB based on the received SSB (step 2).
  • SCS SCS
  • the UE 200 can determine the SCS to be applied to CORESET 0 (CORESET 0-SCS) based on the detected SSB-SCS (step 3).
  • the UE 200 may determine the CORESET 0-SCS value associated with the SSB-SCS value based on the SSB-SCS value. Alternatively, UE 200 may determine a notification method of CORESET 0-SCS associated with the value of SSB-SCS.
  • the UE 200 may set CORESET 0 based on the determined CORESET 0-SCS and receive (detect) the PDCCH (step 4).
  • FIG. 6 shows an example of the relationship between SSB-SCS and subCarrierSpacingCommon according to Operation Example 1. As shown in FIG. 6, the value of SSB-SCS and the value of subCarrierSpacingCommon may be associated.
  • SSB-SCS 480/960 kHz or at least one of them
  • fix the candidate CORESET 0-SCS value to 1 for example, the same SCS as SSB
  • set the subCarrierSpacingCommon bit to for other uses (eg, combination with pdcchConfigSIB1 such as part of RB offset of CORESET 0, or notification of new parameters such as the number of SSBs in a slot).
  • FIG. 7 shows an example of the relationship between SSB-SCS and subCarrierSpacingCommon according to Operation Example 2. As shown in FIG. 7, the value of SSB-SCS and the value of subCarrierSpacingCommon may be associated, and another field may be used to notify more CORESET 0-SCS.
  • the notification method of k SSB may be changed according to SSB-SCS and CORESET 0-SCS.
  • k SSB may be interpreted as the subcarrier offset between the SSB RB and the CORESET 0 RB. That is, k SSB may be interpreted as the difference in the frequency direction between the RB to which the SSB is assigned and the RB designated as CORESET 0.
  • FIG. 8 shows an example of the relationship between SSB-SCS, CORESET 0-SCS, k SSB , and ssb-SubcarrierOffset according to Operation Example 3.
  • FIG. 8 the combination (relationship) between the value of SSB-SCS and the value of CORESET 0-SCS may be associated with k SSB (candidate value) to notify more CORESET 0-SCS A separate field may be used for this purpose.
  • any of the following may be used as another field, as in Operation Example 2.
  • UE 200 can determine CORESET 0-SCS based on SSB-SCS. Also, the UE 200 may determine the notification method of CORESET 0-SCS based on the SSB-SCS. Further, UE 200 may determine a method of notifying the offset in the frequency direction between SSB-SCS and CORESET 0-SCS based on SSB-SCS.
  • the UE200 can quickly and accurately determine the SCS applied to CORESET 0 even if many SCSs such as 960kHz are supported in different frequency bands such as 52.6-71GHz, which are different from FR1 and FR2.
  • each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separate devices (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
  • a functional block (component) that performs transmission is called a transmitting unit or transmitter.
  • the implementation method is not particularly limited.
  • FIG. 9 is a diagram showing an example of the hardware configuration of UE200.
  • UE 200 may be configured as a computing device including processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, and the like.
  • the term "apparatus” can be read as a circuit, device, unit, or the like.
  • the hardware configuration of the UE 200 may be configured to include one or more of each device shown in the figure, or may be configured without some of the devices.
  • Each functional block of the UE200 (see FIG. 4) is implemented by any hardware element of the computer device or a combination of the hardware elements.
  • each function in the UE 200 is performed by causing the processor 1001 to perform calculations, controlling communication by the communication device 1004, and controlling the communication by the memory 1002 by loading predetermined software (programs) onto hardware such as the processor 1001 and the memory 1002. and by controlling at least one of reading and writing data in the storage 1003 .
  • a processor 1001 operates an operating system and controls the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including interfaces with peripheral devices, a control unit, an arithmetic unit, registers, and the like.
  • CPU central processing unit
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them.
  • programs program codes
  • software modules software modules
  • data etc.
  • the various processes described above may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially.
  • Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. may be
  • ROM Read Only Memory
  • EPROM Erasable Programmable ROM
  • EEPROM Electrically Erasable Programmable ROM
  • RAM Random Access Memory
  • the memory 1002 may also be called a register, cache, main memory (main storage device), or the like.
  • the memory 1002 can store programs (program code), software modules, etc. capable of executing a method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu-ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
  • Storage 1003 may also be referred to as an auxiliary storage device.
  • the recording medium described above may be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003 .
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes a high-frequency switch, duplexer, filter, frequency synthesizer, etc., for realizing at least one of frequency division duplex (FDD) and time division duplex (TDD).
  • 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 receives input from the outside.
  • the output device 1006 is an output device (eg, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • the device includes hardware such as a microprocessor, digital signal processor (DSP), application specific integrated circuit (ASIC), programmable logic device (PLD), field programmable gate array (FPGA), etc.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
  • the notification of information can be performed through physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), other signals, or combinations thereof
  • RRC signaling may also be referred to as RRC messages, e.g., RRC Connection Setup ) message, RRC Connection Reconfiguration message, or the like.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • Future Radio Access FAA
  • New Radio NR
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX®
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth®, other suitable systems, and/or next-generation systems enhanced therefrom.
  • a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • a specific operation that is performed by a base station in the present disclosure may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal may be performed by the base station and other network nodes other than the base station (e.g. MME or S-GW, etc., but not limited to).
  • MME or S-GW network nodes
  • the case where there is one network node other than the base station is exemplified above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information, signals can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
  • Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input and output information may be overwritten, updated, or appended. The output information may be deleted. The entered information may be transmitted to other devices.
  • the determination may be made by a value represented by one bit (0 or 1), by a true/false value (Boolean: true or false), or by numerical comparison (for example, a predetermined value).
  • notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the Software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to access websites, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
  • wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • the channel and/or symbols may be signaling.
  • a signal may also be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
  • radio resources may be indexed.
  • base station BS
  • radio base station fixed station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.
  • a base station can accommodate one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area corresponding to a base station subsystem (e.g., a small indoor base station (Remote Radio)). Head: RRH) can also provide communication services.
  • a base station subsystem e.g., a small indoor base station (Remote Radio)
  • Head: RRH can also provide communication services.
  • cell refers to part or all of the coverage area of at least one of a base station and base station subsystem that provides communication services in this coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and 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 a mobile object, the mobile object itself, or the like.
  • the mobile body may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile body (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and 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, hereinafter the same).
  • communication between a base station and a mobile station is replaced with communication between multiple mobile stations (for example, 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.
  • the mobile station may have the functions that the base station has.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be read as side channels.
  • the mobile station in the present disclosure may be read as a base station.
  • the base station may have the functions that the mobile station has.
  • a radio frame may consist of one or more frames in the time domain.
  • Each of one or more frames in the time domain may be called a subframe.
  • a subframe may also consist of one or more slots in the time domain.
  • a subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, transmission and reception specific filtering operations performed by the receiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, and/or the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • number of symbols per TTI radio frame structure
  • transmission and reception specific filtering operations performed by the receiver in the frequency domain specific windowing operations performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • a slot may be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) that is transmitted in time units larger than a minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI. That is, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, may be a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms may be Note that the unit representing the TTI may be called a slot, minislot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
  • TTI is not limited to this.
  • the TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, codewords, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum scheduling time unit.
  • the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI with a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI that is shorter than a regular TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and so on.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, shortened TTI, etc.
  • TTI length 1 ms
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in the RB may be the same regardless of the neumerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on neumerology.
  • the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
  • One TTI, one subframe, etc. may each consist of one or more resource blocks.
  • One or more RBs are physical resource blocks (Physical RB: PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. may be called.
  • PRB Physical resource blocks
  • SCG sub-carrier groups
  • REG resource element groups
  • PRB pairs RB pairs, etc.
  • a resource block may be composed of one or more resource elements (Resource Element: RE).
  • RE resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a Bandwidth Part (which may also be called a Bandwidth Part) represents a subset of contiguous common resource blocks (RBs) for a neumerology in a carrier. good.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • 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 may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • One or more BWPs may be configured in one carrier for a UE.
  • At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
  • BWP bitmap
  • radio frames, subframes, slots, minislots and symbols described above are only examples.
  • the number of subframes included in a radio frame the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc.
  • CP cyclic prefix
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements that are “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
  • two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
  • the reference signal can also be abbreviated as Reference Signal (RS), and may also be called Pilot depending on the applicable standard.
  • RS Reference Signal
  • any reference to elements using the "first,” “second,” etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to first and second elements do not imply that only two elements may be employed therein or that the first element must precede the second element in any way.
  • determining and “determining” used in this disclosure may encompass a wide variety of actions.
  • “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as “judged” or “determined”, and the like.
  • "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
  • judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
  • judgment and “decision” may include considering that some action is “judgment” and “decision”.
  • judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean that "A and B are different from C”.
  • Terms such as “separate,””coupled,” etc. may also be interpreted in the same manner as “different.”
  • Radio communication system 20 NG-RAN 100 gNB 200UE 210 radio signal transmission/reception unit 220 amplifier unit 230 modulation/demodulation unit 240 control signal/reference signal processing unit 250 encoding/decoding unit 260 data transmission/reception unit 270 control unit BM beam 1001 processor 1002 memory 1003 storage 1004 communication device 1005 input device 1006 output device 1007 bus

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

Abstract

Un terminal (200) reçoit un bloc de signal de synchronisation, et, lors de l'utilisation d'une bande de fréquences différente d'une bande de fréquences comprenant une ou plusieurs plages de fréquences, détermine, sur la base d'un premier intervalle de sous-porteuse pour un bloc de signal de synchronisation, un second intervalle de sous-porteuse pour un ensemble de ressources de commande spécifique.
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