WO2022208635A1 - 端末及び通信方法 - Google Patents
端末及び通信方法 Download PDFInfo
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- WO2022208635A1 WO2022208635A1 PCT/JP2021/013424 JP2021013424W WO2022208635A1 WO 2022208635 A1 WO2022208635 A1 WO 2022208635A1 JP 2021013424 W JP2021013424 W JP 2021013424W WO 2022208635 A1 WO2022208635 A1 WO 2022208635A1
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- pusch
- base station
- tdra
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- scheduling
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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 and communication method in a wireless communication system.
- NR New Radio
- LTE Long Term Evolution
- Non-Patent Document 2 is considering using a higher frequency band than previous releases (eg, Non-Patent Document 2).
- a higher frequency band eg., Non-Patent Document 2.
- applicable numerology including subcarrier spacing, channel bandwidth, etc., physical layer design, possible obstacles in actual wireless communication, etc. are being studied.
- a single DCI Downlink Control Information
- PDSCHs Physical Downlink Shared Channels
- PUSCHs Physical Uplink Shared Channel
- the present invention has been made in view of the above points, and can schedule both multi-channel transmission and single-channel repeated transmission in a wireless communication system.
- a receiving unit that receives DCI (Downlink Control Information) including an index indicating a row of a TDRA (Time Domain Resource Allocation) table and an upper layer parameter from a base station, and the index and the upper layer parameter Based on, a control unit that identifies the position in the time domain of one or more scheduled PUSCH (Physical Uplink Shared Channel), and a transmission unit that transmits the one or more PUSCHs to the base station,
- DCI Downlink Control Information
- a control unit that identifies the position in the time domain of one or more scheduled PUSCH (Physical Uplink Shared Channel), and a transmission unit that transmits the one or more PUSCHs to the base station
- a terminal is provided in which a control unit specifies that the single PUSCH is repeatedly transmitted when the higher layer parameter is set to valid and the index indicates scheduling of the single PUSCH in the TDRA.
- both multiple-channel transmission and single-channel repeated transmission can be scheduled in a wireless communication system.
- FIG. 1 is a diagram showing a configuration example of a radio communication system according to an embodiment of the present invention
- FIG. It is a figure which shows the example of the frequency range in embodiment of this invention.
- FIG. 4 is a diagram showing an example (1) of a TDRA table
- FIG. 10 is a diagram showing an example (2) of a TDRA table
- FIG. 10 is a flowchart for explaining an example (1) of scheduling
- FIG. 10 is a diagram showing an example (3) of a TDRA table
- FIG. 10 is a flowchart for explaining scheduling example (2)
- FIG. 4 is a flow chart for explaining an example of scheduling according to the embodiment of the present invention. It is a figure showing an example of functional composition of base station 10 in an embodiment of the invention.
- 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention;
- FIG. 2 is a diagram showing an example of hardware configuration of base station 10 or terminal 20 according to an embodiment of the present invention;
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced and subsequent systems (eg, NR) unless otherwise specified.
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical random access channel
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Uplink Shared Channel
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other (for example, Flexible Duplex etc.) method may be used.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- "configuring" wireless parameters and the like may mean that predetermined values are preset (Pre-configure), and the base station 10 or A wireless 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.
- a wireless communication system according to an embodiment of the present invention includes a base station 10 and terminals 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is an example and there may be more than one.
- the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. Physical resources of radio signals 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 resource blocks. good too.
- the base station 10 transmits synchronization signals and system information to the terminal 20 . Synchronization signals are, for example, NR-PSS and NR-SSS.
- the system information is transmitted by, for example, NR-PBCH, and is also called broadcast information.
- the synchronization signal and system information may be called SSB (SS/PBCH block). As shown in FIG.
- the base station 10 transmits control signals or data to the terminal 20 on DL (Downlink) and receives control signals or data from the terminal 20 on UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Also, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Also, 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). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 by DC (Dual Connectivity).
- SCell Secondary Cell
- PCell Primary Cell
- DC Direct Connectivity
- the terminal 20 is a communication device with a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module. As shown in FIG. 1 , the terminal 20 receives control signals or data from the base station 10 on the DL and transmits control signals or data to the base station 10 on the UL, thereby performing various functions provided by the wireless communication system. Use communication services. Also, the terminal 20 receives various reference signals transmitted from the base station 10, and measures channel quality based on the reception result of the reference signals.
- M2M Machine-to-Machine
- FIG. 2 is a diagram showing an example of frequency ranges in the embodiment of the present invention.
- FR Frequency range 1 1
- SCS Sub carrier spacing
- the bandwidth is from 5 MHz to 100 MHz.
- FR2 is the frequency band from 24.25 GHz to 52.6 GHz
- SCS uses 60, 120 or 240 kHz with a bandwidth of 50 MHz to 400 MHz.
- the newly operated frequency band may be assumed to range from 52.6 GHz to 71 GHz. Furthermore, it may be envisaged to support frequency bands above 71 GHz.
- a single DCI Downlink Control Information
- PDSCHs Physical Downlink Shared Channels
- PUSCHs Physical Uplink Shared Channel
- FIG. 3 is a diagram showing an example (1) of the TDRA table.
- K2 value, mapping type, SLIV (Start and Length Indicator) are Defined. Scheduling is generally performed by notifying the terminal 20 of the row index of the TDRA table through the DCI.
- the K2 value indicates the offset from the scheduling DCI to the scheduled PUSCH.
- a mapping type is a type of method for specifying the symbol start position and symbol length in a slot, and type A and type B are defined.
- FIG. 4 is a diagram showing an example (2) of the TDRA table.
- the TDRA table shown in FIG. 4 supports scheduling of PUSCH repetitions. For example, repetition of DG (Dynamic Grant)-PUSCH may be scheduled by DCI format 0_1 or 0_2 using the TDRA table.
- DG Dynamic Grant
- PUSCH repetition type A and PUSCH repetition type B are supported.
- the mapping types SLIV and K may be specified, and for PUSCH repetition type B, S, L and K may be specified.
- K indicates the number of repetitions.
- PUSCH repetition type A can be set to PUSCH mapping type A or PUSCH mapping type B.
- PUSCH repetition type B can be set to PUSCH mapping type B only.
- the PUSCH repetition type is determined by the higher layer parameter pusch-RepTypeIndicator DCI-0-2.
- the PUSCH repetition type is determined by higher layer parameter pusch-RepTypeIndicatorDCI-0-2.
- the TDRA table includes the upper layer parameter push-TimeDomainAllocationListDCI-0-1. determined based on If the parameter is not set and the push-TimeDomainAllocationList included in the upper layer parameter push-Config is set, it is determined based on the parameter. If the parameter is not set, it is determined based on the push-TimeDomainAllocationList included in the upper layer parameter push-ConfigCommon.
- the TDRA table is determined based on the upper layer parameter pusch-TimeDomainAllocationListDCI-0-2, if set. be done. If the parameter is not set and the push-TimeDomainAllocationList included in the upper layer parameter push-Config is set, it is determined based on the parameter. If the parameter is not set, it is determined based on the push-TimeDomainAllocationList included in the upper layer parameter push-ConfigCommon.
- TDRA table enhanced for URLLLC shown in FIG. 4 may be applied to PUSCH repetition type B.
- the number of repetitions K in PUSCH repetition type B is determined by numberOfRepetitions in the TDRA table.
- FIG. 5 is a flowchart for explaining scheduling example (1).
- the terminal 20 receives DCI from the base station 10 .
- the terminal 20 repeatedly transmits PUSCH to the base station 10 based on the DCI.
- the DCI may be the above DCI format 0_1 or the above DCI format 0_2, and furthermore, the configuration by the higher layer parameters described above may be applied to PUSCH repeated transmission.
- FIG. 6 is a diagram showing an example (3) of the TDRA table. Multiple PUSCHs may be scheduled with a single DCI format 0_1 according to the TDRA table shown in FIG. As shown in FIG. 6, one row index can specify N SLIVs.
- the TDRA table is determined by push-TimeDomainAllocationList-ForMultiPUSCH. According to this parameter, one row index of the TDRA table may be set with SLIVs from 1 to 8.
- FIG. 7 is a flowchart for explaining scheduling example (2).
- the terminal 20 receives DCI from the base station 10 .
- the terminal 20 transmits multiple PUSCHs to the base station 10 based on the DCI.
- the DCI may be the DCI format 0_1 described above.
- PUSCH repeat transmission may not be supported.
- PUSCH repeated transmission may be supported if a single PUSCH is scheduled.
- the RRC parameter may be Multi-PUSCH-And-Single-PUSCH-Repetition. Methods A), B) and C) shown below may be implemented.
- FIG. 8 is a diagram showing an example of a TDRA table according to the embodiment of the invention.
- a new TDRA table shown in FIG. 8 may be configured by combining the TDRA table for multiple PUSCH scheduling and the TDRA table for single PUSCH scheduling. That is, the number of repeated transmissions K may be included in the TDRA table shown in FIG. For example, when the TDRA table shown in FIG. 8 is used, K may be 1 or K may be ignored if multiple PUSCHs are scheduled.
- K may be used as a single PUSCH repetition transmission count only if only one SLIV is set in the row index .
- the RRC parameter Multi-PUSCH-And-Single-PUSCH-Repetition is disabled, PUSCH repetition transmission may not be performed even if only one SLIV is set in the row index.
- a single DCI format enables PUSCH repetition type A and PUSCH repetition type B for single PUSCH scheduling.
- the TDRA table shown in Figure 6 may be used for a single PUSCH repetition transmission.
- the RRC parameter Multi-PUSCH-And-Single-PUSCH-Repetition is enabled and the RRC parameter push-AggregationFactor is set, push- AggregationFactor may be used as the number of single PUSCH repetition transmissions.
- the RRC parameter Multi-PUSCH-And-Single-PUSCH-Repetition is invalid or if the RRC parameter pusch-AggregationFactor is not set, even if only one SLIV is set for the row index , PUSCH repeat transmission may not be performed.
- two TDRA tables may be configured for one DCI format.
- the two TDRA tables correspond to scheduling multiple PUSCH transmissions and scheduling single PUSCH repeated transmissions, respectively.
- the TDRA table shown in FIG. 6 may be used for scheduling multiple PUSCH transmissions and the TDRA table shown in FIG. 4 may be used for scheduling single PUSCH repeated transmissions.
- the RRC parameter Multi-PUSCH-And-Single-PUSCH-Repetition is disabled, only one TDRA table may be configured for that DCI format.
- TDRA table used when a single PUSCH is scheduled, whether to apply repeated transmission is determined by which TDRA table is used and signaled. good. Which TDRA table is used may be explicitly signaled by a field included in the DCI format. If the TDRA table used was a TDRA table that supports multiple PUSCH scheduling, no PUSCH repeat transmission may be performed regardless of whether one or more SLIVs are signaled by the TDRA row index. On the other hand, if the TDRA table used is a TDRA table corresponding to single PUSCH scheduling, the conventional PUSCH repeat transmission rule may be applied.
- PUSCH repetition type A and PUSCH repetition type B are supported for a single PUSCH scheduled by that DCI format.
- a DCI format that supports scheduling multiple PUSCH transmissions may not be used for scheduling repeated transmissions of a single PUSCH. Scheduling of multiple PUSCH transmissions and scheduling of repeated transmissions of a single PUSCH may each be performed by separate DCI formats according to RRC configuration.
- scheduling of multiple PUSCH transmissions may be set by DCI format 0_1, and scheduling of repeated transmission of a single PUSCH may be set by DCI format 0_2.
- scheduling of multiple PUSCH transmissions may be set by DCI format 0_2, and scheduling of repeated transmission of a single PUSCH may be set by DCI format 0_1.
- the TDRA table for scheduling multiple PUSCH transmissions shown in FIG. 6 may be used for scheduling PUSCHs scheduled by DCI format 0_1 (or DCI format 0_2). Parameters related to PUSCH repetition type may not be configured in the DCI format. Multiple PUSCHs may be sent without repetition if multiple SLIVs are signaled in the TDRA row index. Also, if one SLIV is signaled with a TDRA row index, one PUSCH may be sent without repetition.
- the TDRA table for scheduling a single PUSCH transmission shown in FIG. 3 or 4 may be used for scheduling PUSCH scheduled by DCI format 0_2 (or DCI format 0_1).
- PUSCH repeat transmission may be performed as before.
- the scheduling of multiple PUSCH transmissions and the scheduling of repeated transmission of a single PUSCH are performed using individual DCI formats through RRC settings, thereby minimizing the impact on specifications.
- FIG. 9 is a flowchart for explaining an example of scheduling according to the embodiment of the present invention.
- the terminal 20 receives DCI from the base station 10 .
- the terminal 20 transmits multiple PUSCHs or repeatedly transmits a single PUSCH based on the DCI. Note that the terminal 20 may transmit a single PUSCH without repetition.
- any of the options in the above examples may apply to a given frequency band, eg NR52.6-71 GHz. Also, any of the options in the above embodiments may be applied for a given SCS, eg 120 kHz and/or 480 kHz and/or 960 kHz. Further, which option in the above embodiment is used may be set by higher layer parameters, may be reported as UE capability from the terminal 20, may be defined in the specification, It may be determined based on higher layer parameters and UE capabilities.
- a UE capability may be defined that indicates whether the terminal 20 supports scheduling multiple PUSCH transmissions and scheduling repeated transmissions of a single PUSCH.
- a UE capability may also be defined that indicates whether the terminal 20 supports scheduling multiple PUSCH transmissions and scheduling repeated transmissions of a single PUSCH simultaneously in a single DCI format.
- the single DCI format may be DCI format 0_1 and/or DCI format 0_2.
- a UE capability may also be defined that indicates whether the terminal 20 supports scheduling of multiple PUSCH transmissions and scheduling of repeated transmissions of a single PUSCH in each DCI format.
- the base station 10 can efficiently schedule transmission of multiple PUSCHs and repeated transmission of a single PUSCH to the terminal 20 .
- both multiple-channel transmissions and single-channel repeated transmissions can be scheduled in a wireless communication system.
- the base stations 10 and terminals 20 contain the functionality to implement the embodiments described above. However, each of the base station 10 and terminal 20 may have only part of the functions in the embodiment.
- FIG. 10 is a diagram showing an example of the functional configuration of base station 10 according to the embodiment of the present invention.
- the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
- the functional configuration shown in FIG. 10 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
- the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal.
- the transmitter 110 also transmits inter-network-node messages to other network nodes.
- the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, higher layer information from the received signals. Also, the transmitting unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, etc. to the terminal 20 .
- the receiving unit 120 also receives inter-network node messages from other network nodes.
- 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 measurement settings.
- the control unit 140 performs control related to measurement settings, as described in the embodiment. Also, the control unit 140 executes scheduling. A functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and a functional unit related to signal reception in control unit 140 may be included in receiving unit 120 .
- FIG. 11 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention.
- the terminal 20 has a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
- the functional configuration shown in FIG. 11 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
- 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 higher layer signal from the received physical layer signal. Also, 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 .
- the transmission unit 210 as D2D communication, to the other terminal 20, PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) etc.
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink Shared Channel
- PSDCH Physical Sidelink Discovery Channel
- PSBCH Physical Sidelink Broadcast Channel
- 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 measurement settings.
- the control unit 240 performs control related to measurement settings, as described in the embodiment.
- a functional unit related to signal transmission in control unit 240 may be included in transmitting unit 210
- a functional unit related to signal reception in control unit 240 may be included in receiving unit 220 .
- each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (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.
- the base station 10, the terminal 20, etc. may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 12 is a diagram illustrating an example of hardware configurations of the base station 10 and the terminal 20 according to an embodiment of the present disclosure.
- the base station 10 and terminal 20 described above 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. good too.
- the term "apparatus” can be read as a circuit, device, unit, or the like.
- the hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.
- Each function of the base station 10 and the terminal 20 is performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the auxiliary storage device 1003 .
- the processor 1001 for example, operates an operating system and controls the entire computer.
- the processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like.
- CPU central processing unit
- the control unit 140 , the control unit 240 and the like described above may be implemented by the processor 1001 .
- the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to them.
- programs program codes
- software modules software modules
- data etc.
- the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
- control unit 140 of base station 10 shown in FIG. 10 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 .
- the control unit 240 of the terminal 20 shown in FIG. 11 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001.
- FIG. 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 storage device 1002 is a computer-readable recording medium, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
- the storage device 1002 may also be called a register, cache, main memory (main storage device), or the like.
- the storage device 1002 can store executable programs (program code), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.
- the auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
- the storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary storage device 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, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD).
- FDD frequency division duplex
- TDD time division duplex
- the transceiver may be physically or logically separate implementations for the transmitter and receiver.
- 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 (for example, 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 storage device 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 base station 10 and the terminal 20 include hardware such as microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), and FPGAs (Field Programmable Gate Arrays). , and part or all of each functional block may be implemented by the hardware.
- processor 1001 may be implemented using at least one of these pieces of hardware.
- a receiving unit that receives DCI (Downlink Control Information) including an index indicating a row of a TDRA (Time Domain Resource Allocation) table and higher layer parameters from a base station And, based on the index and the higher layer parameter, a control unit that identifies the position in the time domain of one or more PUSCHs (Physical Uplink Shared Channels) scheduled, and the one or more PUSCHs to the base station a transmitting unit for transmitting, wherein the control unit transmits the single PUSCH repeatedly if the higher layer parameter is set to valid and the index indicates scheduling of a single PUSCH in the TDRA.
- DCI Downlink Control Information
- PUSCHs Physical Uplink Shared Channels
- the base station 10 can efficiently schedule transmission of multiple PUSCHs and repeated transmission of a single PUSCH to the terminal 20 . That is, both multiple-channel transmissions and single-channel repetitive transmissions can be scheduled in a wireless communication system.
- the control unit may specify that the single PUSCH is repeatedly transmitted for the number of times when the index indicates the number of times of repetition transmission in the TDRA.
- the receiving unit receives another higher layer parameter from the base station, and the controller determines that, if the other higher layer parameter indicates the number of times of repeated transmission, the single PUSCH is repeatedly transmitted the number of times. may be specified.
- the base station 10 can efficiently schedule transmission of multiple PUSCHs and repeated transmission of a single PUSCH to the terminal 20 .
- the index indicates either a first TDRA table or a second TDRA table, the first TDRA table corresponding to scheduling multiple PUSCH transmissions, and the second TDRA table corresponding to a single PUSCH repetition transmission. scheduling may be supported. With this configuration, the base station 10 can efficiently schedule transmission of multiple PUSCHs and repeated transmission of a single PUSCH to the terminal 20 .
- the receiver receives a first DCI or a second DCI, and the controller schedules multiple PUSCH transmissions based on whether the first DCI or the second DCI is received. or a schedule of single PUSCH repeat transmissions.
- the base station 10 can efficiently schedule transmission of multiple PUSCHs and repeated transmission of a single PUSCH to the terminal 20 .
- DCI Downlink Control Information
- TDRA Time Domain Resource Allocation
- a terminal performing a procedure of specifying that the single PUSCH is repeatedly transmitted when the higher layer parameter is set to valid and the index indicates scheduling of the single PUSCH in the TDRA. be done.
- the base station 10 can efficiently schedule transmission of multiple PUSCHs and repeated transmission of a single PUSCH to the terminal 20 . That is, both multiple-channel transmissions and single-channel repetitive transmissions can be scheduled in a wireless communication system.
- the operations of a plurality of functional units may be physically performed by one component, or the operations 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 using functional block diagrams for convenience of explanation of processing, 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 stored in random access memory (RAM), flash memory, read-only memory, respectively. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.
- notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
- notification of information includes physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
- RRC signaling may also be called an RRC message, for example, RRC It may be a connection setup (RRC Connection Setup) message, an RRC connection reconfiguration 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), 5G (5th generation mobile communication system) 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) )), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other suitable systems and extended It may be applied to at least one of the next generation systems. Also, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).
- a specific operation performed by the base station 10 in this specification may be performed by its upper node in some cases.
- various operations performed for communication with terminal 20 may be performed by base station 10 and other network nodes other than base station 10 (eg, but not limited to MME or S-GW).
- base station 10 e.g, but not limited to MME or S-GW
- the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).
- Information, signals, etc. described in the present disclosure may 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/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.
- the determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), may be performed by a boolean value (Boolean: true or false), or may be performed by comparing numerical values (e.g. , comparison with a predetermined value).
- 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 at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to website, 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 base station
- base station device fixed station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- a base station can accommodate one or more (eg, three) cells.
- the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH:
- RRH indoor small base station
- the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems serving 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 object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (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 IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read as a user terminal.
- communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
- the terminal 20 may have the functions of the base station 10 described above.
- 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.
- user terminals in the present disclosure may be read as base stations.
- the base station may have the functions that the above-described user terminal has.
- 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.
- 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 being “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 RS (Reference Signal), 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, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.
- a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of 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 configuration, transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
- SCS subcarrier spacing
- TTI transmission time interval
- transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
- a slot may consist 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.
- 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.
- PDSCH (or PUSCH) transmitted in time units larger than minislots 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
- TTI Transmission Time Interval
- TTI Transmission Time Interval
- one slot or one minislot may be called a TTI.
- TTI Transmission Time Interval
- 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 Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum scheduling time unit in wireless communication.
- the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
- radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
- TTI is not limited to this.
- a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. 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 or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
- a TTI that is shorter than a normal TTI may 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 the like.
- the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
- the short TTI e.g., shortened TTI, etc.
- a TTI having the above TTI length may be read instead.
- a resource block is a resource allocation unit in the time domain and the 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 numerology, and may be 12, for example.
- the number of subcarriers included in an RB may be determined based on numerology.
- 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 (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. may be called.
- PRBs physical resource blocks
- SCGs sub-carrier groups
- REGs resource element groups
- PRB pairs RB pairs, etc. may be called.
- a resource block may be composed of one or more resource elements (RE: Resource Element).
- RE Resource Element
- 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) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology on a certain carrier.
- 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.
- 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 multiple BWPs may be configured for a UE within one carrier.
- 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 contained in a radio frame the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.
- CP cyclic prefix
- 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.”
- 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.
- Multi-PUSCH-And-Single-PUSCH-Repetition in the present disclosure is an example of upper layer parameters.
- the push-AggregationFactor is an example of another higher layer parameter.
- base station 110 transmitting unit 120 receiving unit 130 setting unit 140 control unit 20 terminal 210 transmitting unit 220 receiving unit 230 setting unit 240 control unit 1001 processor 1002 storage device 1003 auxiliary storage device 1004 communication device 1005 input device 1006 output device
Abstract
Description
次に、これまでに説明した処理及び動作を実行する基地局10及び端末20の機能構成例を説明する。基地局10及び端末20は上述した実施例を実施する機能を含む。ただし、基地局10及び端末20はそれぞれ、実施例の中の一部の機能のみを備えることとしてもよい。
図10は、本発明の実施の形態における基地局10の機能構成の一例を示す図である。図10に示されるように、基地局10は、送信部110と、受信部120と、設定部130と、制御部140とを有する。図10に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
図11は、本発明の実施の形態における端末20の機能構成の一例を示す図である。図11に示されるように、端末20は、送信部210と、受信部220と、設定部230と、制御部240とを有する。図11に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
上記実施形態の説明に用いたブロック図(図10及び図11)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。
以上、説明したように、本発明の実施の形態によれば、TDRA(Time Domain Resource Allocation)テーブルの行を示すインデックスを含むDCI(Downlink Control Information)及び上位レイヤパラメータを基地局から受信する受信部と、前記インデックス及び前記上位レイヤパラメータに基づいて、スケジューリングされた1又は複数のPUSCH(Physical Uplink Shared Channel)の時間領域における位置を特定する制御部と、前記1又は複数のPUSCHを前記基地局に送信する送信部とを有し、前記制御部は、前記上位レイヤパラメータが有効に設定され、かつ、前記インデックスが前記TDRAにおいて単一PUSCHのスケジューリングを示す場合、前記単一PUSCHが繰り返し送信されると特定する端末が提供される。
以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局10及び端末20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従って端末20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
110 送信部
120 受信部
130 設定部
140 制御部
20 端末
210 送信部
220 受信部
230 設定部
240 制御部
1001 プロセッサ
1002 記憶装置
1003 補助記憶装置
1004 通信装置
1005 入力装置
1006 出力装置
Claims (6)
- TDRA(Time Domain Resource Allocation)テーブルの行を示すインデックスを含むDCI(Downlink Control Information)及び上位レイヤパラメータを基地局から受信する受信部と、
前記インデックス及び前記上位レイヤパラメータに基づいて、スケジューリングされた1又は複数のPUSCH(Physical Uplink Shared Channel)の時間領域における位置を特定する制御部と、
前記1又は複数のPUSCHを前記基地局に送信する送信部とを有し、
前記制御部は、前記上位レイヤパラメータが有効に設定され、かつ、前記インデックスが前記TDRAにおいて単一PUSCHのスケジューリングを示す場合、前記単一PUSCHが繰り返し送信されると特定する端末。 - 前記制御部は、前記インデックスが前記TDRAにおいて繰り返し送信の回数を示す場合、前記単一PUSCHが前記回数繰り返し送信されると特定する請求項1記載の端末。
- 前記受信部が、他の上位レイヤパラメータを前記基地局から受信し、
前記制御部は、前記他の上位レイヤパラメータが繰り返し送信の回数を示す場合、前記単一PUSCHが前記回数繰り返し送信されると特定する請求項1記載の端末。 - 前記インデックスは、第1のTDRAテーブル又は第2のTDRAテーブルのいずれかを示し、前記第1のTDRAテーブルは複数PUSCH送信のスケジューリングに対応し、前記第2のTDRAテーブルは、単一PUSCH繰り返し送信のスケジューリングに対応する請求項1記載の端末。
- 前記受信部は、第1のDCI又は第2のDCIを受信し、前記制御部は、前記第1のDCI又は前記第2のDCIいずれを受信したかに基づいて、複数PUSCH送信のスケジュールであるか、単一PUSCH繰り返し送信のスケジュールであるかを特定する請求項1記載の端末。
- TDRA(Time Domain Resource Allocation)テーブルの行を示すインデックスを含むDCI(Downlink Control Information)及び上位レイヤパラメータを基地局から受信する受信手順と、
前記インデックス及び前記上位レイヤパラメータに基づいて、スケジューリングされた1又は複数のPUSCH(Physical Uplink Shared Channel)の時間領域における位置を特定する制御手順と、
前記1又は複数のPUSCHを前記基地局に送信する送信手順と、
前記上位レイヤパラメータが有効に設定され、かつ、前記インデックスが前記TDRAにおいて単一PUSCHのスケジューリングを示す場合、前記単一PUSCHが繰り返し送信されると特定する手順を端末が実行する通信方法。
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