WO2022044141A1 - Terminal, station de base et procédé de communication - Google Patents

Terminal, station de base et procédé de communication Download PDF

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Publication number
WO2022044141A1
WO2022044141A1 PCT/JP2020/032090 JP2020032090W WO2022044141A1 WO 2022044141 A1 WO2022044141 A1 WO 2022044141A1 JP 2020032090 W JP2020032090 W JP 2020032090W WO 2022044141 A1 WO2022044141 A1 WO 2022044141A1
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Prior art keywords
base station
terminal
resource
signal
interlaced
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PCT/JP2020/032090
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English (en)
Japanese (ja)
Inventor
真由子 岡野
浩樹 原田
慎也 熊谷
尚哉 芝池
Original Assignee
株式会社Ｎｔｔドコモ
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Priority to PCT/JP2020/032090 priority Critical patent/WO2022044141A1/fr
Publication of WO2022044141A1 publication Critical patent/WO2022044141A1/fr

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

Definitions

  • the present invention relates to a terminal, a base station and a communication method in a wireless communication system.
  • Non-Patent Document 1 In NR (New Radio) (also referred to as “5G”), which is the successor system to LTE (Long Term Evolution), the requirements are a large capacity system, high-speed data transmission speed, low delay, and simultaneous use of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).
  • Non-Patent Document 2 For example, in the frequency band from 52.6 GHz to 71 GHz, applicable numerology including subcarrier spacing, channel bandwidth, etc., physical layer design, obstacles assumed in actual wireless communication, and the like are being studied.
  • a signal is sent to the frequency domain in consideration of the subcarrier interval and the like so as to satisfy, for example, OCB (Occupied Channel Bandwidth) requirements and SPD (Spectral Power Density) requirements, which are restrictions on uplink or downlink transmission. Need to be placed.
  • OCB Occupied Channel Bandwidth
  • SPD Spectrum Power Density
  • the present invention has been made in view of the above points, and in a wireless communication system, the position of a signal in the frequency domain can be flexibly set.
  • it has a control unit that arranges physical resources in a signal in an interlaced manner in the frequency domain, and a transmission unit that transmits the signal to a base station, and has a particle size that specifies the period of the interlaced scheme.
  • a terminal that can be changed is provided.
  • the position of the signal in the frequency domain can be flexibly set in the wireless communication system.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced and later methods (eg, NR) unless otherwise specified.
  • SS Synchronization signal
  • PSS Primary SS
  • SSS Secondary SS
  • PBCH Physical broadcast channel
  • PRACH Physical
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH and the like. However, even if it is a signal used for NR, it is not always specified as "NR-".
  • the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or any other system (for example, Flexible Duplex, etc.). Method may be used.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • Method may be used.
  • "configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station 10 or The radio parameter notified from the terminal 20 may be set.
  • FIG. 1 is a diagram showing a configuration example of a wireless communication system according to an embodiment of the present invention.
  • the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20 as shown in FIG.
  • FIG. 1 shows one base station 10 and one terminal 20, this is an example, and each of them may be plural.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • the physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain is defined by the number of subcarriers or the number of resource blocks. May be good.
  • the base station 10 transmits a synchronization signal and system information to the terminal 20. Synchronous signals are, for example, NR-PSS and NR-SSS.
  • the system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information.
  • the synchronization signal and system information may be referred to as SSB (SS / PBCH block).
  • the base station 10 transmits a control signal or data to the terminal 20 by DL (Downlink), and receives the control signal or data from the terminal 20 by UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Further, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) by CA (Carrier Aggregation). Further, the terminal 20 may perform communication via a primary cell of the base station 10 by DC (Dual Connectivity) and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10.
  • DC Dual Connectivity
  • PSCell Primary SCG Cell
  • the terminal 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives a control signal or data from the base station 10 by DL, and transmits the control signal or data to the base station 10 by UL, so that various types provided by the wireless communication system are provided. Use communication services. Further, the terminal 20 receives various reference signals transmitted from the base station 10, and measures the propagation path quality based on the reception result of the reference signals.
  • M2M Machine-to-Machine
  • NR release 17 it is considered to use a higher frequency band than before. For example, whether waveforms, pneumatics, channel access mechanisms, etc. can be applied, the impact on the physical layer design, and the possible obstacles in actual wireless communication are being investigated. Further, for example, a channel access mechanism considering interference with other nodes assuming beam operation to meet the regulations applicable to the unlicensed band has been verified.
  • Subcarrier spacing SCS
  • Table 1 shows an example of the subcarrier interval.
  • the subcarrier interval may be set from 120 kHz to 1920 kHz.
  • the number of resource blocks (RBs) in a given bandwidth decreases as the subcarrier interval increases.
  • the number of resource blocks in the 400 MHz bandwidth may be 256 when the subcarrier interval is 120 kHz, 128 when the subcarrier interval is 240 kHz, 64 when the subcarrier interval is 480 kHz, and 32 when the subcarrier interval is 960 kHz. good.
  • the number of resource blocks in the 2 GHz bandwidth may be 160 when the subcarrier interval is 960 kHz and 80 when the subcarrier interval is 1920 kHz.
  • the frequency domain is regulated for uplink or downlink transmission, for example, in consideration of subcarrier intervals so as to satisfy OCB (Occupied Channel Bandwidth) requirements (requirements) and SPD (Spectral Power Density) requirements. It is necessary to place the signal in.
  • OCB Occupied Channel Bandwidth
  • SPD Spectrum Power Density
  • the OCB requirement regulates the system bandwidth usage rate in a certain channel. For example, 70% to 100% of the system bandwidth may be regulated to be transmitted. Interlaced resource allocation may be made to channels, for example, to meet OCB requirements.
  • the SPD requirement regulates the average EIRP (Equivalent Isotropically Radiated Power) density per 1 MHz transmission burst.
  • the SPD requirement may be 13 dBm / MHz.
  • the maximum value of the average EIRP per transmission burst, which is the RF transmission power may be 40 dBm.
  • interlaced resource allocation may be performed in the frequency domain.
  • Table 2 shows an example of the number of interlaced resource blocks in the resource allocation (Resource allocation type 2) of the PUSCH to which the interlace for the conventional NR-U system is applied.
  • the NR-U system is an NR system that supports an unlicensed band.
  • the conventional interlace setting in which the number of resource blocks for which the interlace cycle is one for each of the subcarrier intervals of 15 kHz and 30 kHz is specified is inflexible. ..
  • a new neurology in the high frequency band that is, a resource allocation method to which interlace adapted to the new subcarrier interval is applied is required.
  • the number of resource blocks MRB that is the cycle of the above interlace may be expanded to take other values instead of 5 or 10.
  • the MRB may be set, for example, by a higher layer parameter or DCI (Downlink Control Information).
  • DCI Downlink Control Information
  • the interlacing method described below is referred to as "method A”.
  • a single MRB value may be fixedly set for each subcarrier interval for ease of implementation.
  • a plurality of MRB candidate values may be defined in the specifications for each subcarrier interval, and any one of the plurality of candidate values may be set.
  • M RB 20 or 25 for 120 kHz SCS
  • M RB 15 or 20, for 240 kHz SCS
  • M RB 10 or 15 for 480 kHz SCS
  • other candidate values may be added in the case of 15 kHz SCS and 30 kHz SCS for which the values have already been specified.
  • MRB 10 is set for 960 kHz SCS in the 400 MHz bandwidth, the OCB requirement may not be satisfied. In that case, the MRB may be reduced.
  • the total number of resource blocks to be arranged may not be 7. Due to implementation restrictions (eg, FFT (Fast Fourier Transform)), the total number of resource blocks may be arranged to be a multiple of 2, 3 or 5.
  • FFT Fast Fourier Transform
  • the frequency domain resource assignment field (FDRA field) in the UL grant may notify the resource allocation within the interlace cycle.
  • the bitmap of the MRB bits may correspond to an index indicating resource allocation within the interlaced cycle.
  • the resource indicator value ( RIV ) may notify the resource allocation within the interlace cycle. That is, the method of notifying the resource allocation in the interlace cycle may be determined based on the MRB value.
  • the resource allocation field in the frequency domain of DL allocation or SL allocation may notify the resource allocation within the interlace cycle without being limited to the UL grant.
  • FIG. 2 is a diagram showing an example (1) of interlace setting in the embodiment of the present invention.
  • interlacing is performed for every 20 PRBs, and the indexes in the interlacing cycle are 2,3,4,7,8,9,12,13,14,17,18,19. Resources are placed in the PRB.
  • FIG. 3 is a diagram showing an example (2) of interlace setting in the embodiment of the present invention.
  • interlacing is performed for every 5 PRBs, and resources are allocated to PRBs having indexes 2 and 4 in the interlacing cycle.
  • the resource allocation field in the frequency domain may be defined so as to be correctly decoded.
  • the resource allocation field in the frequency domain may be fixed to the X-bit length.
  • the X bit length may be a bit length corresponding to the maximum value that the base station 10 can set for the terminal 20 among the candidate values of MRB .
  • only the Y bit of the X bits may be decoded.
  • the total number of resource blocks to be arranged may be a number excluding 7 other than 10 or 11, or may be 10 or 11.
  • the total number of resource blocks in a certain band may be set to a multiple of M RB , or may be a value other than a multiple of M RB .
  • method A may be applied to UL channels / signals including PUSCH, PUCCH or PRACH, or may be applied to DL channels / signals or SL channels / signals.
  • the period of interlace may be defined as a multiple of the resource block, and the number of resource block groups ( RBG ) may be notified by the MRBG.
  • RBG resource block groups
  • the PAPR peak to average power ratio
  • the particle size can be increased by changing from the RB unit to the RBG unit, and the number of bits required for notification can be reduced.
  • the interlacing method described below is referred to as "method B".
  • One resource block group is composed of more than one PRB.
  • the number of PRBs contained in one resource block group may be set by a higher layer parameter or DCI.
  • one type of PRB number included in one resource block group may be set, and may be set by the upper layer parameter according to the subcarrier interval.
  • a plurality of types of PRBs included in one resource block group may be set by upper layer parameters according to the subcarrier interval, and DCI may dynamically notify which PRB number is to be used. ..
  • the number of resource block groups M RBG that is the cycle of the above interlace may be 5 or 10, or may take any other value.
  • the MRBG may be set, for example, by a higher layer parameter or DCI.
  • a single MRBG value may be fixedly set for each subcarrier interval for ease of implementation.
  • a plurality of MRBG candidate values may be defined in the specifications for each subcarrier interval, and any one of the plurality of candidate values may be set.
  • the MRBG value and the number of PRBs included in one resource block group may be defined so as to satisfy the OCB requirement.
  • the resource allocation field in the frequency domain in the UL grant may notify the resource allocation within the period of interlacing. For example, if the MRBG is set to a value less than 10, the bitmap of the MRBG bits may correspond to an index indicating resource allocation within the interlaced cycle. For example, when the MRBG is set to a value of 10 or more, the resource notification value may notify the resource allocation within the interlace cycle. That is, the method of notifying the resource allocation in the interlace cycle may be determined based on the MRBG value. It should be noted that the resource allocation field in the frequency domain of DL allocation or SL allocation may notify the resource allocation within the interlace cycle without being limited to the UL grant.
  • FIG. 4 is a diagram showing an example (3) of interlace setting in the embodiment of the present invention.
  • interlacing is performed for every three resource block groups, and resources are arranged in the resource block group having an index of 1 in the interlacing cycle.
  • the total number of resource blocks in a certain band may be a multiple of the number of PRBs included in one resource block group, or may be another value.
  • method B may be applied to UL channels / signals including PUSCH, PUCCH or PRACH, or may be applied to DL channels / signals or SL channels / signals.
  • the period of interlacing may be defined as a multiple of the resource element group ( REG ), and the number of resource element groups may be notified by MREG.
  • REG resource element group
  • MREG resource element group
  • one resource element group may be composed of 1, 2, 3, 4 or 6 resource elements.
  • the number of resource elements included in one resource element group may be set by a higher layer parameter or DCI, or may be fixedly set according to at least one of a subcarrier interval, a frequency band, and a channel type. good.
  • the number of resource elements included in one resource element group is set to one type, and may be set by the upper layer parameter for each subcarrier interval. Further, for example, the number of resource elements included in one resource element group is set to a plurality of types by the upper layer parameter for each subcarrier interval, and DCI dynamically notifies which number of resource elements to use. good.
  • the number of resource block groups MREG that is the cycle of the above interlace may be 5 or 10, or may take any other value.
  • the MREG may be set, for example, by a higher layer parameter or DCI, or may be fixedly set according to at least one of the subcarrier spacing, frequency band and channel type.
  • a single MREG value may be fixedly set for each subcarrier interval for ease of implementation.
  • a plurality of MREG candidate values may be specified in the specifications for each subcarrier interval, and any one of the plurality of candidate values may be set.
  • the resource allocation field in the frequency domain in the UL grant may notify the resource allocation within the period of interlacing. For example, if M REG is set to a value less than 10, the bitmap of the M REG bits may correspond to an index indicating resource allocation within the interlaced cycle. For example, when MREG is set to a value of 10 or more, the resource notification value may notify the resource allocation within the interlace cycle. That is, the method of notifying the resource allocation in the interlace cycle may be determined based on the MREG value. It should be noted that the resource allocation field in the frequency domain of DL allocation or SL allocation may notify the resource allocation within the interlace cycle without being limited to the UL grant.
  • FIG. 5 is a diagram showing an example (4) of interlace setting in the embodiment of the present invention.
  • interlacing is performed for every 6 resource element groups, and resources are arranged in resource element groups having indexes 1, 3 and 5 in the interlacing cycle.
  • method C may be applied to UL channels / signals including PUSCH, PUCCH or PRACH, or may be applied to DL channels / signals or SL channels / signals.
  • the interlace cycle may be defined by a multiple MRB of the resource block as in the “method A”, and the resource allocation may be notified for each resource element group in the resource block.
  • the interlacing method described below is referred to as "method D”.
  • one resource element group may be composed of 1, 2, 3, 4 or 6 resource elements.
  • the number of resource elements included in one resource element group may be set by a higher layer parameter or DCI, or may be fixedly set according to at least one of a subcarrier interval, a frequency band, and a channel type. good.
  • the number of resource elements included in one resource element group is set to one type, and may be set by the upper layer parameter according to the subcarrier interval. Further, for example, the number of resource elements included in one resource element group is set to a plurality of types by the upper layer parameter according to the subcarrier interval, and DCI notifies which number of resource elements is dynamically used. May be good.
  • the number of resource blocks MRB that is the cycle of the above interlace may be 5 or 10, or may have other values.
  • the MRB may be set, for example, by a higher layer parameter or DCI, or may be fixedly set according to at least one of the subcarrier spacing, frequency band and channel type.
  • a single MRB value may be fixedly set for each subcarrier interval for ease of implementation.
  • a plurality of MRB candidate values may be defined in the specifications for each subcarrier interval, and any one of the plurality of candidate values may be set.
  • the resource allocation field in the frequency domain in the UL grant may notify the resource allocation within the interlace cycle. For example, a bitmap or resource notification value indicating the PRB in which the resource is placed may be notified, and further, the index of the resource element group in the PRB may be notified by the bitmap.
  • FIG. 6 is a diagram showing an example (5) of interlace setting in the embodiment of the present invention.
  • a bitmap (100) showing a PRB in which an SCS 960 kHz, a channel bandwidth of 400 MHz, and MRB 3 or 3 bits are arranged, and a bitmap (0110) showing a resource element group in which a 4-bit resource is arranged.
  • An example of the interlace setting when three resource elements are included in one resource element group is shown.
  • interlacing is performed every 3 PRBs, and resources are arranged in a resource element group having indexes 1 and 2 among PRBs having an index of 0 in the interlaced cycle.
  • method D may be applied to UL channels / signals including PUSCH, PUCCH or PRACH, or may be applied to DL channels / signals or SL channels / signals.
  • the above-mentioned interlaced method “method A”, “method B”, “method C” and “method D” may be set or may be defined in advance. Further, the above-mentioned interlaced method “method A”, “method B”, “method C” and “method D” may be dynamically switched depending on which of the higher parameters or DCI is used.
  • method A may be applied to uplink channels / signals (for example, PUCCH, PUSCH, PRACH) or downlink. It may be applied to a link channel / signal (eg, PDCCH, PDSCH, PBCH) or to a side link channel / signal (PSCCH, PSSCH, PSBCH, PSFCH).
  • uplink channels / signals for example, PUCCH, PUSCH, PRACH
  • link channel / signal eg, PDCCH, PDSCH, PBCH
  • PSCCH, PSSCH, PSBCH, PSFCH side link channel / signal
  • the terminal 20 notifies the base station 10 which of the above-mentioned interlaced methods "method A”, “method B”, “method C”, and “method D” is supported. May be good.
  • the notification of the UE capability related to the interlaced method may be executed for each of the uplink, downlink, and side link. Further, the notification of the UE capability related to the interlaced method may be executed for each channel, for example. The notification of the UE capability related to the interlaced method may be executed for each of "method A”, “method B", “method C” and "method D”.
  • method A The above-mentioned interlaced method "method A”, “method B”, “method C” and “method D” are not limited to the high frequency band, and may be applied in any frequency band, and are conventionally applied. It may be applied when the subcarrier interval of is not large.
  • the terminal 20 may transmit a channel or signal to which the above-mentioned interlace method is applied to the base station 10, and the base station 10 may transmit a channel or signal to which the above-mentioned interlace method is applied to the terminal 20.
  • the terminal 20 may transmit, or the terminal 20 may transmit a channel or signal to which the above-mentioned interlace method is applied to another terminal 20.
  • the base station 10 and the terminal 20 can flexibly apply the interlacing method in the frequency domain at a plurality of particle sizes according to the subcarrier interval.
  • the position of the signal in the frequency domain can be flexibly set.
  • the base station 10 and the terminal 20 include a function for carrying out the above-described embodiment.
  • the base station 10 and the terminal 20 may each have only a part of the functions in the embodiment.
  • FIG. 7 is a diagram showing an example of the functional configuration of the base station 10 according to the embodiment of the present invention.
  • the base station 10 has a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in FIG. 7 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.
  • the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. Further, the transmission unit 110 transmits a message between network nodes to another network node.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring information of, for example, a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals and the like to the terminal 20. Further, the receiving unit 120 receives a message between network nodes from another network node.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20.
  • the content of the setting information is, for example, information related to the interlace setting.
  • the control unit 140 controls the interlace setting as described in the embodiment.
  • the function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.
  • FIG. 8 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention.
  • the terminal 20 has a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in FIG. 8 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station 10. Further, for example, the transmission unit 210 may use PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication on another terminal 20. Etc. are transmitted, and the receiving unit 220 receives PSCCH, PSCH, PSDCH, PSBCH, etc. from the other terminal 20.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Broadcast
  • the setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220.
  • the setting unit 230 also stores preset setting information.
  • the content of the setting information is, for example, information related to the interlace setting.
  • the control unit 240 controls the interlace setting as described in the embodiment.
  • the function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.
  • each functional block may be realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , 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.
  • a functional block (configuration unit) that makes transmission function is called a transmitting unit (transmitting unit) or a transmitter (transmitter).
  • the realization method is not particularly limited.
  • the base station 10, the terminal 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
  • FIG. 9 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to the embodiment of the present disclosure.
  • the above-mentioned base station 10 and terminal 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be good.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 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.
  • the processor 1001 For each function in the base station 10 and the terminal 20, by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, the processor 1001 performs an calculation and controls the communication by the communication device 1004. It is realized by controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like.
  • CPU Central Processing Unit
  • control unit 140, control unit 240, and the like may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these.
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the control unit 140 of the base station 10 shown in FIG. 7 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 8 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001.
  • Processor 1001 may be mounted by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium, and is, for example, by at least one of ROM (ReadOnlyMemory), EPROM (ErasableProgrammableROM), EEPROM (ElectricallyErasableProgrammableROM), RAM (RandomAccessMemory), and the like. It may be configured.
  • the storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu).
  • -It may be composed of at least one of a ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like.
  • the storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 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.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an 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 storage device 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 base station 10 and the terminal 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • control unit that arranges physical resources in a signal in an interlaced manner in the frequency domain, and a transmission unit that transmits the signal to a base station.
  • a terminal is provided in which the particle size for specifying the period of the interlaced method can be changed.
  • the base station 10 and the terminal 20 can flexibly use the interlacing method in the frequency domain to which a plurality of particle sizes are applied according to the subcarrier interval. That is, in the wireless communication system, the position of the signal in the frequency domain can be flexibly set.
  • the particle size may be a resource block, a resource block group, or a resource element group.
  • the terminal 20 can flexibly use the interlacing method in the frequency domain to which a plurality of particle sizes are applied.
  • the control unit may set one or a plurality of interlaced cycles for each subcarrier interval.
  • the terminal 20 can flexibly use the interlacing method in the frequency domain to which a plurality of particle sizes are applied, depending on the subcarrier interval.
  • the method of notifying the resource allocation within the cycle of the interlaced method may be determined based on the length of the cycle of the interlaced method. With this configuration, the base station 10 can efficiently notify the terminal 20 of the resource allocation by the interlaced method.
  • the resource allocation in the resource block in which the physical resource is allocated may be further specified for each resource element group.
  • the base station 10 can efficiently notify the terminal 20 of detailed resource allocation by the interlaced method.
  • control unit that arranges physical resources in a signal in an interlaced manner in the frequency domain, and a transmission unit that transmits the signal to a terminal, and the period of the interlaced method.
  • a base station is provided in which the granularity to specify is variable.
  • the base station 10 and the terminal 20 can flexibly use the interlacing method in the frequency domain to which a plurality of particle sizes are applied according to the subcarrier interval. That is, in the wireless communication system, the position of the signal in the frequency domain can be flexibly set.
  • the terminal executes a control procedure for arranging physical resources in a signal in an interlaced manner in a frequency domain and a transmission procedure for transmitting the signal to a base station, and the interlace is performed.
  • a communication method is provided in which the particle size for specifying the cycle of the method can be changed.
  • the base station 10 and the terminal 20 can flexibly use the interlacing method in the frequency domain to which a plurality of particle sizes are applied according to the subcarrier interval. That is, in the wireless communication system, the position of the signal in the frequency domain can be flexibly set.
  • the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components.
  • the processing order may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only memory, respectively. It may be stored in (ROM), EPROM, EPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may also be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
  • Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication).
  • system FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize appropriate systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, 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 10 in the present specification may be performed by its upper node (upper node).
  • various operations performed for communication with the terminal 20 are performed by the base station 10 and other network nodes other than the base station 10 (for example, MME, S-GW, etc. are conceivable, but it is clear that it can be done by at least one of these).
  • MME, S-GW, etc. are conceivable, but it is clear that it can be done by at least one of these.
  • the case where there is one network node other than the base station 10 is illustrated, but the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). ..
  • the information, signals, etc. described in the present disclosure 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 and the like may be stored in a specific location (for example, a memory) or may be managed using a management table. Information to be input / output may be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
  • the determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a true / false value (Boolean: true or false), or by comparison of numerical values (for example). , Comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
  • 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, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), 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: Component Carrier
  • CC Component Carrier
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using an absolute value, a relative value from a predetermined value, or another corresponding information. It may be represented.
  • the radio resource may be one indicated by an index.
  • base station Base Station
  • wireless base station base station
  • base station device fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • GNB nodeB
  • access point “ transmission point ”,“ reception point ”,“ transmission / reception point ”,“ cell ”,“ sector ”
  • Terms such as “cell group,” “carrier,” and “component carrier” may be used interchangeably.
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (eg, 3) cells. When a base station accommodates multiple cells, the entire base station coverage area can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)). Communication services can also be provided by (Remote Radio Head).
  • the term "cell” or “sector” is a part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage. Point to.
  • MS Mobile Station
  • UE User Equipment
  • Mobile stations can be used by those skilled in the art as 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. 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, a 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 IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read by the user terminal.
  • the communication between the base station and the user terminal is replaced with the communication between a plurality of terminals 20 (for example, it may be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the terminal 20 may have the functions of the base station 10 described above.
  • 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 user terminal in the present disclosure may be read as a base station.
  • the base station may have the functions of the above-mentioned user terminal.
  • 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. It may include (for example, accessing data in memory) to be regarded as “judgment” or “decision”.
  • judgment and “decision” are considered to be “judgment” and “decision” when the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming", “expecting”, “considering” and the like.
  • 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. Can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applied standard.
  • RS Reference Signal
  • Pilot Pilot
  • references to elements using designations such as “first” and “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. Therefore, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
  • each of the above devices may be replaced with a "part”, a “circuit”, a “device”, or the like.
  • the wireless 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.
  • the subframe may further be composed of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
  • Numerology includes, for example, subcarrier interval (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, and transmitter / receiver. It may indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like.
  • the slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain. Slots may be time units based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may be composed of one or more symbols in the time domain. Further, the mini slot may be referred to as a sub slot. The minislot may consist of a smaller number of symbols than the slot.
  • a PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
  • one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI.
  • TTI transmission time interval
  • You may. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. 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 terminal 20 to allocate radio resources (frequency bandwidth that can be used in each terminal 20, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • 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 referred to as 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.
  • TTI shorter than normal TTI may be referred to as shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, minislot, subslot, slot and the like.
  • the long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI eg, shortened TTI, etc.
  • TTI having the above TTI length may be read as TTI having the above TTI length.
  • the resource block (RB) 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 the 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 (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.
  • PRB Physical resource block
  • 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 (RE: Resource Element).
  • RE Resource Element
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • the bandwidth part (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier.
  • RBs common resource blocks
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • 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 radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
  • the number of subcarriers, the number of symbols in TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and other configurations can be changed in various ways.
  • 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”.
  • the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
  • the PRB in the present disclosure is an example of a physical resource.
  • Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

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

Abstract

Ce terminal comprend une unité de commande pour agencer une ressource physique dans un signal à l'aide d'un schéma d'entrelacement dans le domaine fréquentiel, et une unité de transmission pour transmettre le signal à une station de base, la granularité avec laquelle la période du schéma d'entrelacement est spécifiée pouvant être modifiée.
PCT/JP2020/032090 2020-08-25 2020-08-25 Terminal, station de base et procédé de communication WO2022044141A1 (fr)

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Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "UL PHY channels for NR unlicensed", 3GPP DRAFT; R1-1812193, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, 3 November 2018 (2018-11-03), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , pages 1 - 22, XP051478349 *
VIVO: "Discussion on physical UL channel design in unlicensed spectrum", 3GPP DRAFT; R1-1906129 DISCUSSION ON PHYSICAL UL CHANNEL DESIGN IN UNLICENSED SPECTRUM, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 1 May 2019 (2019-05-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051708170 *

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