WO2022029986A1 - Terminal and communication method - Google Patents
Terminal and communication method Download PDFInfo
- Publication number
- WO2022029986A1 WO2022029986A1 PCT/JP2020/030283 JP2020030283W WO2022029986A1 WO 2022029986 A1 WO2022029986 A1 WO 2022029986A1 JP 2020030283 W JP2020030283 W JP 2020030283W WO 2022029986 A1 WO2022029986 A1 WO 2022029986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dmrs
- base station
- reference signal
- resource
- symbol
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
Definitions
- the present invention relates to a terminal 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 in actual wireless communication, and the like are being studied.
- the present invention has been made in view of the above points, and a reference signal that improves communication quality and suppresses overhead can be used in a wireless communication system.
- a receiving unit that receives a setting related to a reference signal from a base station, a control unit that arranges a first reference signal based on the setting and data in a resource, and the resource being used as the base station.
- the control unit has a transmission unit for transmitting to the resource, and the control unit has a type in which the frequency domain arrangement is different between the continuous first symbol and the second symbol included in the resource, and the control unit covers all the frequency domains of the resource.
- a terminal for arranging the first reference signal is provided.
- a reference signal that improves communication quality and suppresses overhead can be used in a 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 (PSCell: Primary Secondary Cell) of another base station 10.
- SCell Secondary Cell
- PCell Primary Cell
- CA Carrier Aggregation
- 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 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby providing various types provided by the wireless communication system. 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, obstacles in actual wireless communication, etc. 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.
- New melody The preparation and calculation time of BWP (Bandwidth Part), beam switching time, HARQ (Hybrid automatic repeat request) scheduling, UE processing time, PDSCH, PUSCH / SRS, CSI, etc. that are suitable for the new new melody are examined. There is.
- BWP Bandwidth Part
- HARQ Hybrid automatic repeat request
- FIG. 2 is a diagram showing an arrangement example (1) of DMRS.
- the type 1 multiplexing method is two comb-type frequency multiplexing, two cyclic shifts, and TD-OCC (Time Division Orthogonal Cover Code).
- Type 1 DMRS supports up to 4 layers when placed on one symbol and up to 8 layers when placed on 2 symbols.
- the density in the frequency domain is 6 subcarriers per port.
- the horizontal axis corresponds to the symbol and the vertical axis corresponds to the subcarrier.
- FIG. 3 is a diagram showing an arrangement example (2) of DMRS.
- the type 2 multiplexing method is FD-OCC (Frequency Division Orthogonal Cover Code), TD-OCC, and FDM (Frequency division multiplexing).
- Type 2 DMRS supports up to 6 layers when placed on one symbol and up to 12 layers when placed on two symbols. The density in the frequency domain is 4 subcarriers per port.
- FIG. 4 is a diagram showing an arrangement example (3) of DMRS. As shown in FIG. 4, in addition to the front-arranged DMRS of the third symbol, an additional DMRS (additional DMRS) may be arranged by one symbol at the twelfth symbol.
- additional DMRS additional DMRS
- FIG. 5 is a diagram showing an arrangement example (4) of DMRS. As shown in FIG. 5, in addition to the front arrangement DMRS of the third symbol, additional DMRS may be arranged in a total of three symbols at the sixth symbol, the ninth symbol, and the twelfth symbol.
- FIG. 6 is a diagram for explaining the coherent bandwidth. For scenarios in the high frequency band, increasing the subcarrier spacing in consideration of the coherent bandwidth shown in FIG. 6 is being considered.
- FIG. 6 is a plot of a 50% correlated coherent bandwidth, a 90% correlated coherent bandwidth, and RMS-DS (root mean square delay spread).
- the coherent bandwidth indicates the bandwidth on which the channel characteristics can be assumed to be constant.
- the subcarrier spacing increases, the number of subcarriers contained in one coherent bandwidth decreases. In that case, the characteristics of the channel may be significantly different between two adjacent subcarriers. Due to the difference in channel characteristics, the performance of FD-OCC may be significantly reduced. Therefore, high-density DMRS is required in the frequency domain.
- DMRS ports may be connected or multiplexed. Further, for example, a DMRS having a new structure arranged in the entire frequency domain may be specified. Also, for example, different comb patterns may be specified for the additional DMRS.
- FIG. 7 is a diagram showing an arrangement example (1) of DMRS in the embodiment of the present invention.
- DMRS port # 0 and DMRS port # 1 by arranging DMRS port # 0 and DMRS port # 1 by frequency division multiplexing, it is possible to arrange DMRS in all frequency domains over a plurality of symbols for each port.
- DMRS is arranged every other subcarrier in a certain symbol, and DMRS is not arranged in the same subcarrier in the first symbol and the second symbol.
- the comb pattern of DMRS port # 1 replaces the first symbol and the second symbol of DMRS port # 0.
- the arrangement of DMRS shown in FIG. 7 may be referred to as “configuration type 1”.
- the arrangement of DMRSs shown in FIG. 7 provides a diversity effect in the time domain as compared to the arrangement of DMRSs in all frequency domains of a single symbol.
- OCC may not be applied to the arrangement of DMRS2 ports shown in FIG.
- the number of ports is reduced as compared with the case where OCC is applied, but the beam is relatively narrow in the high frequency band, the SDM (Space division multiplexing) capacitance is small, and the beam Since the number of UEs in the direction is small, no problem occurs.
- the arrangement of DMRSs shown in FIG. 7 allows the density of DMRSs in the frequency domain to be increased by using the same number of resource elements as the release 16 two-symbol DMRSs.
- FIG. 8 is a diagram showing an arrangement example (2) of DMRS in the embodiment of the present invention.
- FIG. 8 shows another example of a DMRS arrangement different from that of FIG.
- DMRS port # 0 and DMRS port # 1 by arranging DMRS port # 0 and DMRS port # 1 by frequency multiplexing, it is possible to arrange DMRS in all frequency domains over a plurality of symbols for each port.
- DMRS having two subcarrier widths is arranged every two subcarriers in a certain symbol, and DMRS is not arranged in the same subcarrier in the first symbol and the second symbol.
- the comb pattern of DMRS port # 1 replaces the first symbol and the second symbol of DMRS port # 0.
- the arrangement of DMRS shown in FIG. 8 may be referred to as “configuration type 2”.
- FIG. 9 is a diagram showing an arrangement example (3) of DMRS in the embodiment of the present invention.
- FIG. 10 is a diagram showing an arrangement example (4) of DMRS in the embodiment of the present invention.
- 9 and 10 are examples in which TD-OCC is applied to the arrangement of the DMRS2 port shown in FIG. 7 to obtain a DMRS4 port.
- the SDM capacity or the number of multiplexes of the UE can be increased.
- FIG. 11 is a diagram showing an arrangement example (5) of DMRS in the embodiment of the present invention.
- FIG. 12 is a diagram showing an arrangement example (6) of DMRS in the embodiment of the present invention.
- 11 and 12 are examples in which TD-OCC is applied to the arrangement of the DMRS2 port shown in FIG. 8 to obtain a DMRS4 port.
- the SDM capacity or the number of multiplexes of the UE can be increased.
- FIG. 13 is a diagram showing an arrangement example (7) of DMRS in the embodiment of the present invention.
- the placement of the additional DMRS may be associated with the placement of the forward placement DMRS.
- additional DMRSs may be placed with the same density and pattern as the front-placed DMRSs.
- additional DMRS may be arranged with the same density and a different pattern as the front-arranged DMRS.
- the pattern in which the first symbol and the second symbol of the front-arranged DMRS are replaced can be used as the pattern of the additional DMRS, and the comb pattern of the front-arranged DMRS and the additional DMRS can be different in the frequency domain.
- FIG. 14 is a diagram showing an example (8) of arrangement of DMRS in the embodiment of the present invention.
- the additional DMRS may have a density in a time domain different from that of the front-mounted DMRS, or may be a density in a frequency domain different from that of the front-mounted DMRS.
- the additional DMRS is primarily targeted at terminals 20 moving at high speeds using channels with large time variation, resource elements with low density of additional DMRS in the frequency domain can be complemented by the forward-located DMRS. ..
- the density of the additional DMRS in the time domain is halved of the front placement DMRS.
- the density in the frequency domain of the additional DMRS may be halved of the forward-arranged DMRS.
- the density of the additional DMRS in the time domain is forward. It may be the same as the arrangement DMRS, and the density in the frequency domain of the additional DMRS may be halved of the front arrangement DMRS.
- the DMRS in the above-described embodiment may be applied to the downlink or the uplink.
- the base station 10 may transmit the DMRS in the above-described embodiment together with the PDCCH and the PDSCH, and the terminal 20 may decode the PDCCH and the PDSCH based on the DMRS.
- the terminal 20 may transmit the DMRS in the above-described embodiment together with the PUCCH and the PUSCH, and the base station 10 may decode the PUCCH and the PUSCH based on the DMRS.
- the terminal 20 may receive the setting related to DMRS in the above-described embodiment from the base station 10.
- the terminal 20 may arrange the DMRS in the radio resource based on the setting received from the base station 10, further arrange the data in the radio resource, and transmit the data to the base station 10.
- the radio resource may be, for example, a resource block, a resource element, or a plurality of symbols.
- the base station 10 and the terminal 20 can reduce the resources used for the DMRS while ensuring the density of the frequency domain of the DMRS by arranging the DMRS in different symbols with different comb patterns. ..
- a reference signal that improves communication quality and suppresses overhead can be used.
- 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. 15 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. 15 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 arrangement of DMRS.
- the control unit 140 controls the arrangement of DMRS as described in the embodiment. Further, the control unit 140 controls the communication by the DSS.
- 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. 16 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. 16 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 arrangement of DMRS.
- the control unit 240 controls the arrangement of DMRS 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 (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, 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. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't.
- 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. 17 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. 15 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. 16 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
- the receiving unit that receives the setting related to the reference signal from the base station, the first reference signal based on the setting, and the data are arranged in the resource.
- the control unit has a control unit and a transmission unit that transmits the resource to the base station, and the control unit has a type in which the arrangement of the frequency domain is different between the continuous first symbol and the second symbol included in the resource.
- a terminal for arranging the first reference signal in all frequency domains of the resource is provided.
- the terminal 20 can reduce the resources used for DMRS while ensuring the density of the frequency domain of DMRS by arranging DMRS on different symbols with different comb patterns. That is, in a wireless communication system, a reference signal that improves communication quality and suppresses overhead can be used.
- the model may be a comb pattern in which the first reference signal is not arranged in a part of the frequency domain.
- the comb pattern may be a type in which the first reference signal is arranged every other subcarrier, or a type in which the first reference signal is arranged every two subcarriers. With this configuration, the terminal 20 can reduce the resources used for DMRS by using the comb pattern.
- the control unit may apply a TD-OCC (Time Division Orthogonal Cover Code) to the first symbol and the second symbol.
- TD-OCC Time Division Orthogonal Cover Code
- the control unit may arrange the second reference signal in the resource at a density different from the density of the first reference signal. With this configuration, the terminal 20 can reduce the resources used for the additional DMRS.
- the terminal executes a transmission procedure for transmitting the resource to the base station, and the control procedure is a type in which the frequency domain arrangement is different between the continuous first symbol and the second symbol included in the resource.
- a communication method is provided that includes a procedure for arranging the first reference signal in all frequency domains of the resource.
- the terminal 20 can reduce the resources used for DMRS while ensuring the density of the frequency domain of DMRS by arranging DMRS in different symbols with different comb patterns. That is, in a wireless communication system, a reference signal that improves communication quality and suppresses overhead can be used.
- 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 absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
- the radio resource may be one indicated by an index.
- base station 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.
- the words such as "up” and “down” may be read as words corresponding to the 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, 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.
- DMRS in the present disclosure is an example of a reference signal.
- the front-mounted DMRS is an example of a first reference signal.
- the additional DMRS is an example of a second reference signal.
- PDCCH and PDSCH, PUCCH and PUSCH are examples of data.
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This terminal includes: a receiving unit that receives, from a base station, a setting pertaining to a reference signal; a control unit that arranges, in a resource, data and a first reference signal based on the setting; and a transmission unit that transmits the resource to the base station. The control unit arranges the first reference signal in all frequency regions of the resource in a manner such that the frequency region arrangement differs between first and second symbols that are adjacent and included in the resource.
Description
本発明は、無線通信システムにおける端末及び通信方法に関する。
The present invention relates to a terminal and a communication method in a wireless communication system.
LTE(Long Term Evolution)の後継システムであるNR(New Radio)(「5G」ともいう。)においては、要求条件として、大容量のシステム、高速なデータ伝送速度、低遅延、多数の端末の同時接続、低コスト、省電力等を満たす技術が検討されている(例えば非特許文献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).
NRリリース17では、従来のリリース(例えば非特許文献2)よりも高い周波数帯を使用することが検討されている。例えば、52.6GHzから71GHzまでの周波数帯における、サブキャリア間隔、チャネル帯域幅等を含む適用可能なニューメロロジ、物理レイヤのデザイン、実際の無線通信上の障害等が検討されている。
In NR release 17, it is considered to use a higher frequency band than the conventional release (for example, 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 in actual wireless communication, and the like are being studied.
従来のDMRS(Demodulation reference signal)デザインでは、DMRSが配置されるシンボルが強い干渉を受けた場合、すべてのDMRSの検出に失敗し、通信品質が著しく悪化する可能性があった。
In the conventional DMRS (Demodulation reference signal) design, if the symbol on which the DMRS is placed receives strong interference, the detection of all DMRS may fail and the communication quality may be significantly deteriorated.
本発明は上記の点に鑑みてなされたものであり、無線通信システムにおいて、通信品質を向上させ、かつオーバヘッドを抑制する参照信号を使用することができる。
The present invention has been made in view of the above points, and a reference signal that improves communication quality and suppresses overhead can be used in a wireless communication system.
開示の技術によれば、参照信号に係る設定を基地局から受信する受信部と、前記設定に基づく第1の参照信号と、データとをリソースに配置する制御部と、前記リソースを前記基地局に送信する送信部とを有し、前記制御部は、前記リソースに含まれる連続する第1のシンボル及び第2のシンボルに、周波数領域の配置が異なる型式で、前記リソースのすべての周波数領域に前記第1の参照信号を配置する端末が提供される。
According to the disclosed technique, a receiving unit that receives a setting related to a reference signal from a base station, a control unit that arranges a first reference signal based on the setting and data in a resource, and the resource being used as the base station. The control unit has a transmission unit for transmitting to the resource, and the control unit has a type in which the frequency domain arrangement is different between the continuous first symbol and the second symbol included in the resource, and the control unit covers all the frequency domains of the resource. A terminal for arranging the first reference signal is provided.
開示の技術によれば、無線通信システムにおいて、通信品質を向上させ、かつオーバヘッドを抑制する参照信号を使用することができる。
According to the disclosed technology, a reference signal that improves communication quality and suppresses overhead can be used in a wireless communication system.
以下、図面を参照して本発明の実施の形態を説明する。なお、以下で説明する実施の形態は一例であり、本発明が適用される実施の形態は、以下の実施の形態に限られない。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.
本発明の実施の形態の無線通信システムの動作にあたっては、適宜、既存技術が使用される。ただし、当該既存技術は、例えば既存のLTEであるが、既存のLTEに限られない。また、本明細書で使用する用語「LTE」は、特に断らない限り、LTE-Advanced、及び、LTE-Advanced以降の方式(例:NR)を含む広い意味を有するものとする。
Existing technology is appropriately used in the operation of the wireless communication system according to the embodiment of the present invention. However, the existing technology is, for example, an existing LTE, but is not limited to the existing LTE. Further, the term "LTE" used in the present specification has a broad meaning including LTE-Advanced and LTE-Advanced and later methods (eg, NR) unless otherwise specified.
また、以下で説明する本発明の実施の形態では、既存のLTEで使用されている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)等の用語を使用する。これは記載の便宜上のためであり、これらと同様の信号、機能等が他の名称で呼ばれてもよい。また、NRにおける上述の用語は、NR-SS、NR-PSS、NR-SSS、NR-PBCH、NR-PRACH等に対応する。ただし、NRに使用される信号であっても、必ずしも「NR-」と明記しない。
Further, in the embodiment of the present invention described below, SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical) used in the existing LTE. Random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel), etc. are used. This is for convenience of description, and signals, functions, etc. similar to these may be referred to by other names. Further, the above-mentioned terms in NR correspond 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-".
また、本発明の実施の形態において、複信(Duplex)方式は、TDD(Time Division Duplex)方式でもよいし、FDD(Frequency Division Duplex)方式でもよいし、又はそれ以外(例えば、Flexible Duplex等)の方式でもよい。
Further, in the embodiment of the present invention, 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.
また、本発明の実施の形態において、無線パラメータ等が「設定される(Configure)」とは、所定の値が予め設定(Pre-configure)されることであってもよいし、基地局10又は端末20から通知される無線パラメータが設定されることであってもよい。
Further, in the embodiment of the present invention, "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.
図1は、本発明の実施の形態における無線通信システムの構成例を示す図である。本発明の実施の形態における無線通信システムは、図1に示されるように、基地局10及び端末20を含む。図1には、基地局10及び端末20が1つずつ示されているが、これは例であり、それぞれ複数であってもよい。
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. Although FIG. 1 shows one base station 10 and one terminal 20, this is an example, and each of them may be plural.
基地局10は、1つ以上のセルを提供し、端末20と無線通信を行う通信装置である。無線信号の物理リソースは、時間領域及び周波数領域で定義され、時間領域はOFDM(Orthogonal Frequency Division Multiplexing)シンボル数で定義されてもよいし、周波数領域はサブキャリア数又はリソースブロック数で定義されてもよい。基地局10は、同期信号及びシステム情報を端末20に送信する。同期信号は、例えば、NR-PSS及びNR-SSSである。システム情報は、例えば、NR-PBCHにて送信され、報知情報ともいう。同期信号及びシステム情報は、SSB(SS/PBCH block)と呼ばれてもよい。図1に示されるように、基地局10は、DL(Downlink)で制御信号又はデータを端末20に送信し、UL(Uplink)で制御信号又はデータを端末20から受信する。基地局10及び端末20はいずれも、ビームフォーミングを行って信号の送受信を行うことが可能である。また、基地局10及び端末20はいずれも、MIMO(Multiple Input Multiple Output)による通信をDL又はULに適用することが可能である。また、基地局10及び端末20はいずれも、CA(Carrier Aggregation)によるセカンダリセル(SCell:Secondary Cell)及びプライマリセル(PCell:Primary Cell)を介して通信を行ってもよい。さらに、端末20は、DC(Dual Connectivity)による基地局10のプライマリセル及び他の基地局10のプライマリセカンダリセル(PSCell:Primary Secondary Cell)を介して通信を行ってもよい。
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). As shown in FIG. 1, 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 (PSCell: Primary Secondary Cell) of another base station 10.
端末20は、スマートフォン、携帯電話機、タブレット、ウェアラブル端末、M2M(Machine-to-Machine)用通信モジュール等の無線通信機能を備えた通信装置である。図1に示されるように、端末20は、DLで制御信号又はデータを基地局10から受信し、ULで制御信号又はデータを基地局10に送信することで、無線通信システムにより提供される各種通信サービスを利用する。また、端末20は、基地局10から送信される各種の参照信号を受信し、当該参照信号の受信結果に基づいて伝搬路品質の測定を実行する。
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 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby providing various types provided by the wireless communication system. 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.
ここで、NRリリース17において、従来よりも高周波数帯を使用することが検討されている。例えば、波形、ニューメロロジ、チャネルアクセスメカニズム等が適用可能であるか、物理レイヤデザインに与えるインパクト、実際の無線通信における障害等が検討されている。さらに、例えば、アンライセンスバンドに適用可能な規制を満たすためのビーム運用を想定する他ノードとの干渉を考慮したチャネルアクセスメカニズムが検証されている。
Here, in 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, obstacles in actual wireless communication, etc. 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.
また、NRリリース17では、例えば以下1)-3)について検討されている。
Also, in NR Release 17, for example, the following 1) -3) are being considered.
1)ニューメロロジ
新たなニューメロロジに、適合するBWP(Bandwidth Part)、ビーム切替時間、HARQ(Hybrid automatic repeat request)スケジューリング、UE処理時間、PDSCH、PUSCH/SRS、CSI等の準備及び算出時間が検討されている。 1) New melody The preparation and calculation time of BWP (Bandwidth Part), beam switching time, HARQ (Hybrid automatic repeat request) scheduling, UE processing time, PDSCH, PUSCH / SRS, CSI, etc. that are suitable for the new new melody are examined. There is.
新たなニューメロロジに、適合するBWP(Bandwidth Part)、ビーム切替時間、HARQ(Hybrid automatic repeat request)スケジューリング、UE処理時間、PDSCH、PUSCH/SRS、CSI等の準備及び算出時間が検討されている。 1) New melody The preparation and calculation time of BWP (Bandwidth Part), beam switching time, HARQ (Hybrid automatic repeat request) scheduling, UE processing time, PDSCH, PUSCH / SRS, CSI, etc. that are suitable for the new new melody are examined. There is.
2)ビーム運用
対象とする周波数帯に、ライセンスバンド及び案ライセンスバンド向けの64SSB(SS/PBCH block)までに対応するビーム、ビーム運用を想定するチャネルアクセスメカニズムが検討されている。 2) Beam operation For the target frequency band, a beam corresponding to the license band and up to 64SSB (SS / PBCH block) for the proposed license band, and a channel access mechanism assuming beam operation are being studied.
対象とする周波数帯に、ライセンスバンド及び案ライセンスバンド向けの64SSB(SS/PBCH block)までに対応するビーム、ビーム運用を想定するチャネルアクセスメカニズムが検討されている。 2) Beam operation For the target frequency band, a beam corresponding to the license band and up to 64SSB (SS / PBCH block) for the proposed license band, and a channel access mechanism assuming beam operation are being studied.
3)チャネル化及びRF要求
バンドの定義、RF要求、RRM(Radio resource management)/RLM(Radio link monitoring)要求が検討されている。 3) Channelization and RF requirement Band definition, RF requirement, RRM (Radio resource management) / RLM (Radio link monitoring) requirement are being studied.
バンドの定義、RF要求、RRM(Radio resource management)/RLM(Radio link monitoring)要求が検討されている。 3) Channelization and RF requirement Band definition, RF requirement, RRM (Radio resource management) / RLM (Radio link monitoring) requirement are being studied.
現在のNRでは、異なる多重化方式による以下の二つのタイプのDMRSがサポートされる。図2は、DMRSの配置例(1)を示す図である。図2に示される前方配置DMRS(front-loaded DMRS)のように、タイプ1の多重化方式は、2つのコーム型周波数多重、2つのサイクリックシフト、TD-OCC(Time Division Orthogonal Cover Code)である。タイプ1のDMRSは、1シンボルに配置される場合4レイヤまでをサポートし、2シンボルに配置される場合8レイヤまでをサポートする。周波数領域における密度は、ポートあたり6サブキャリアである。なお、図2及び図3以降に示されるマトリクスは、横軸がシンボルに対応し縦軸がサブキャリアに対応する。
The current NR supports the following two types of DMRS with different multiplexing methods. FIG. 2 is a diagram showing an arrangement example (1) of DMRS. As in the front-loaded DMRS (front-loaded DMRS) shown in FIG. 2, the type 1 multiplexing method is two comb-type frequency multiplexing, two cyclic shifts, and TD-OCC (Time Division Orthogonal Cover Code). be. Type 1 DMRS supports up to 4 layers when placed on one symbol and up to 8 layers when placed on 2 symbols. The density in the frequency domain is 6 subcarriers per port. In the matrix shown in FIGS. 2 and 3 and later, the horizontal axis corresponds to the symbol and the vertical axis corresponds to the subcarrier.
図3は、DMRSの配置例(2)を示す図である。図3に示される前方配置DMRSように、タイプ2の多重化方式は、FD-OCC(Frequency Division Orthogonal Cover Code)、TD-OCC、FDM(Frequency division multiplexing)である。タイプ2のDMRSは、1シンボルに配置される場合6レイヤまでをサポートし、2シンボルに配置される場合12レイヤまでサポートする。周波数領域における密度は、ポートあたり4サブキャリアである。
FIG. 3 is a diagram showing an arrangement example (2) of DMRS. As shown in FIG. 3, the type 2 multiplexing method is FD-OCC (Frequency Division Orthogonal Cover Code), TD-OCC, and FDM (Frequency division multiplexing). Type 2 DMRS supports up to 6 layers when placed on one symbol and up to 12 layers when placed on two symbols. The density in the frequency domain is 4 subcarriers per port.
図4は、DMRSの配置例(3)を示す図である。図4に示されるように、3シンボル目の前方配置DMRSに加えて、12シンボル目に追加DMRS(additional DMRS)が1シンボル配置されてもよい。
FIG. 4 is a diagram showing an arrangement example (3) of DMRS. As shown in FIG. 4, in addition to the front-arranged DMRS of the third symbol, an additional DMRS (additional DMRS) may be arranged by one symbol at the twelfth symbol.
図5は、DMRSの配置例(4)を示す図である。図5に示されるように、3シンボル目の前方配置DMRSに加えて、6シンボル目、9シンボル目及び12シンボル目に追加DMRSが計3シンボル配置されてもよい。
FIG. 5 is a diagram showing an arrangement example (4) of DMRS. As shown in FIG. 5, in addition to the front arrangement DMRS of the third symbol, additional DMRS may be arranged in a total of three symbols at the sixth symbol, the ninth symbol, and the twelfth symbol.
図6は、コヒーレント帯域幅を説明するための図である。高周波数帯におけるシナリオ向けに、図6に示されるコヒーレント帯域幅を考慮してサブキャリア間隔を拡大することが検討されている。図6では50%相関するコヒーレント帯域幅及び90%相関するコヒーレント帯域幅と、RMS-DS(root mean square delay spread)とをプロットしたものである。コヒーレント帯域幅はチャネル特性が一定であることが想定できる帯域幅を示している。サブキャリア間隔が大きくなるにつれて、1つのコヒーレント帯域幅に含まれるサブキャリア数は減少する。その場合、隣接する2つのサブキャリアの間においてもチャネルの特性が大きく異なることがある。当該チャネル特性差によって、FD-OCCはパフォーマンスが著しく低下する恐れがある。そのため、周波数領域において高密度のDMRSが要求される。
FIG. 6 is a diagram for explaining the coherent bandwidth. For scenarios in the high frequency band, increasing the subcarrier spacing in consideration of the coherent bandwidth shown in FIG. 6 is being considered. FIG. 6 is a plot of a 50% correlated coherent bandwidth, a 90% correlated coherent bandwidth, and RMS-DS (root mean square delay spread). The coherent bandwidth indicates the bandwidth on which the channel characteristics can be assumed to be constant. As the subcarrier spacing increases, the number of subcarriers contained in one coherent bandwidth decreases. In that case, the characteristics of the channel may be significantly different between two adjacent subcarriers. Due to the difference in channel characteristics, the performance of FD-OCC may be significantly reduced. Therefore, high-density DMRS is required in the frequency domain.
ここで、NRのDMRSのデザインとして、DMRSポートは連結されるか、多重されてもよい。また、例えば、周波数領域すべてに配置される新たな構造を有するDMRSが規定されてもよい。また、例えば、追加DMRSについて異なるコームパターンが規定されてもよい。
Here, as the design of DMRS of NR, DMRS ports may be connected or multiplexed. Further, for example, a DMRS having a new structure arranged in the entire frequency domain may be specified. Also, for example, different comb patterns may be specified for the additional DMRS.
一方、DMRSが配置されるシンボルが強い干渉を受けた場合、すべてのDMRSの検出に失敗し、通信品質が著しく悪化する可能性があった。そこで、2シンボル長の前方配置DMRSについて、異なるシンボルに対して異なるコームパターンとなる配置がサポートされてもよい。
On the other hand, if the symbol on which the DMRS is placed is strongly interfered with, the detection of all DMRS may fail and the communication quality may be significantly deteriorated. Therefore, for the front placement DMRS of 2 symbol lengths, placements with different comb patterns for different symbols may be supported.
図7は、本発明の実施の形態におけるDMRSの配置例(1)を示す図である。図7に示されるように、DMRSポート#0及びDMRSポート#1を周波数多重により配置することで、ポートごとに複数のシンボルにわたってすべての周波数領域にDMRSを配置することが可能となる。DMRSポート#0のコームパターンは、あるシンボルにおいて1サブキャリアおきにDMRSが配置され、1シンボル目と2シンボル目とで同一のサブキャリアにDMRSは配置されない。DMRSポート#1のコームパターンは、DMRSポート#0の1シンボル目と2シンボル目を置換したものである。例えば、図7に示されるDMRSの配置を、「設定タイプ1(configuration type 1)」と呼んでもよい。図7に示されるDMRSの配置により、単一のシンボルのすべての周波数領域にDMRSを配置する場合と比較して、時間領域でダイバーシチ効果が得られる。
FIG. 7 is a diagram showing an arrangement example (1) of DMRS in the embodiment of the present invention. As shown in FIG. 7, by arranging DMRS port # 0 and DMRS port # 1 by frequency division multiplexing, it is possible to arrange DMRS in all frequency domains over a plurality of symbols for each port. In the comb pattern of DMRS port # 0, DMRS is arranged every other subcarrier in a certain symbol, and DMRS is not arranged in the same subcarrier in the first symbol and the second symbol. The comb pattern of DMRS port # 1 replaces the first symbol and the second symbol of DMRS port # 0. For example, the arrangement of DMRS shown in FIG. 7 may be referred to as “configuration type 1”. The arrangement of DMRSs shown in FIG. 7 provides a diversity effect in the time domain as compared to the arrangement of DMRSs in all frequency domains of a single symbol.
図7に示されるDMRS2ポートの配置にOCCは適用されていなくてもよい。図7に示されるDMRSの配置ではポート数はOCCを適用する場合と比較して減少するものの、高い周波数帯においては相対的にビームは狭く、SDM(Space division multiplexing)容量は小さく、さらにビームの方向のUE数が少ないため、問題は生じない。図7に示されるDMRSの配置により、リリース16の2シンボルDMRSと同一のリソースエレメント数を使用して、周波数領域のDMRSの密度を向上させることができる。
OCC may not be applied to the arrangement of DMRS2 ports shown in FIG. In the DMRS arrangement shown in FIG. 7, the number of ports is reduced as compared with the case where OCC is applied, but the beam is relatively narrow in the high frequency band, the SDM (Space division multiplexing) capacitance is small, and the beam Since the number of UEs in the direction is small, no problem occurs. The arrangement of DMRSs shown in FIG. 7 allows the density of DMRSs in the frequency domain to be increased by using the same number of resource elements as the release 16 two-symbol DMRSs.
図8は、本発明の実施の形態におけるDMRSの配置例(2)を示す図である。図8は、図7と異なるDMRS配置の他の例を示す。図8に示されるように、DMRSポート#0及びDMRSポート#1を周波数多重により配置することで、ポートごとに複数のシンボルにわたってすべての周波数領域にDMRSを配置することが可能となる。DMRSポート#0のコームパターンは、あるシンボルにおいて2サブキャリアおきに2サブキャリア幅のDMRSが配置され、1シンボル目と2シンボル目とで同一のサブキャリアにDMRSは配置されない。DMRSポート#1のコームパターンは、DMRSポート#0の1シンボル目と2シンボル目を置換したものである。例えば、図8に示されるDMRSの配置を、「設定タイプ2(configuration type 2)」と呼んでもよい。
FIG. 8 is a diagram showing an arrangement example (2) of DMRS in the embodiment of the present invention. FIG. 8 shows another example of a DMRS arrangement different from that of FIG. As shown in FIG. 8, by arranging DMRS port # 0 and DMRS port # 1 by frequency multiplexing, it is possible to arrange DMRS in all frequency domains over a plurality of symbols for each port. In the comb pattern of DMRS port # 0, DMRS having two subcarrier widths is arranged every two subcarriers in a certain symbol, and DMRS is not arranged in the same subcarrier in the first symbol and the second symbol. The comb pattern of DMRS port # 1 replaces the first symbol and the second symbol of DMRS port # 0. For example, the arrangement of DMRS shown in FIG. 8 may be referred to as “configuration type 2”.
図9は、本発明の実施の形態におけるDMRSの配置例(3)を示す図である。図10は、本発明の実施の形態におけるDMRSの配置例(4)を示す図である。図9及び図10は、図7に示されるDMRS2ポートの配置にTD-OCCを適用して、DMRS4ポートとした例である。
FIG. 9 is a diagram showing an arrangement example (3) of DMRS in the embodiment of the present invention. FIG. 10 is a diagram showing an arrangement example (4) of DMRS in the embodiment of the present invention. 9 and 10 are examples in which TD-OCC is applied to the arrangement of the DMRS2 port shown in FIG. 7 to obtain a DMRS4 port.
図9に示されるように、図7に示されるDMRSポート#0の配置において、1シンボル目に+1、2シンボル目に+1を乗じたものをポート#0、1シンボル目に+1、2シンボル目に-1を乗じたものをポート#1として、DMRS CDMグループ#0とする。
As shown in FIG. 9, in the arrangement of DMRS port # 0 shown in FIG. 7, the 1st symbol multiplied by +1 and the 2nd symbol multiplied by +1 is port # 0, the 1st symbol is +1 and the 2nd symbol. Is multiplied by -1 to be port # 1, and DMRS CDM group # 0.
図10に示されるように、図7に示されるDMRSポート#1の配置において、1シンボル目に+1、2シンボル目に+1を乗じたものをポート#2、1シンボル目に+1、2シンボル目に-1を乗じたものをポート#3として、DMRS CDMグループ#1とする。
As shown in FIG. 10, in the arrangement of DMRS port # 1 shown in FIG. 7, the first symbol multiplied by +1 and the second symbol multiplied by +1 is port # 2, the first symbol is +1 and the second symbol. Is multiplied by -1 to be port # 3, and DMRS CDM group # 1.
図9及び図10に示されるようにDMRSを配置することで、SDM容量又はUEの多重化数を増大することができる。
By arranging the DMRS as shown in FIGS. 9 and 10, the SDM capacity or the number of multiplexes of the UE can be increased.
図11は、本発明の実施の形態におけるDMRSの配置例(5)を示す図である。図12は、本発明の実施の形態におけるDMRSの配置例(6)を示す図である。図11及び図12は、図8に示されるDMRS2ポートの配置にTD-OCCを適用して、DMRS4ポートとした例である。
FIG. 11 is a diagram showing an arrangement example (5) of DMRS in the embodiment of the present invention. FIG. 12 is a diagram showing an arrangement example (6) of DMRS in the embodiment of the present invention. 11 and 12 are examples in which TD-OCC is applied to the arrangement of the DMRS2 port shown in FIG. 8 to obtain a DMRS4 port.
図11に示されるように、図8に示されるDMRSポート#0の配置において、1シンボル目に+1、2シンボル目に+1を乗じたものをポート#0、1シンボル目に+1、2シンボル目に-1を乗じたものをポート#1として、DMRS CDMグループ#0とする。
As shown in FIG. 11, in the arrangement of DMRS port # 0 shown in FIG. 8, the 1st symbol multiplied by +1 and the 2nd symbol multiplied by +1 is port # 0, the 1st symbol is +1 and the 2nd symbol. Is multiplied by -1 to be port # 1, and DMRS CDM group # 0.
図12に示されるように、図8に示されるDMRSポート#1の配置において、1シンボル目に+1、2シンボル目に+1を乗じたものをポート#2、1シンボル目に+1、2シンボル目に-1を乗じたものをポート#3として、DMRS CDMグループ#1とする。
As shown in FIG. 12, in the arrangement of DMRS port # 1 shown in FIG. 8, the first symbol multiplied by +1 and the second symbol multiplied by +1 is port # 2, the first symbol is +1 and the second symbol. Is multiplied by -1 to be port # 3, and DMRS CDM group # 1.
図11及び図12に示されるようにDMRSを配置することで、SDM容量又はUEの多重化数を増大することができる。
By arranging the DMRS as shown in FIGS. 11 and 12, the SDM capacity or the number of multiplexes of the UE can be increased.
図13は、本発明の実施の形態におけるDMRSの配置例(7)を示す図である。追加DMRSの配置は、前方配置DMRSの配置と関連付けられてもよい。例えば、図13のオプション1に示されるように、前方配置DMRSと同一の密度かつ同一のパターンで追加DMRSが配置されてもよい。
FIG. 13 is a diagram showing an arrangement example (7) of DMRS in the embodiment of the present invention. The placement of the additional DMRS may be associated with the placement of the forward placement DMRS. For example, as shown in option 1 of FIG. 13, additional DMRSs may be placed with the same density and pattern as the front-placed DMRSs.
また、図13のオプション2に示されるように、前方配置DMRSと同一の密度かつ異なるパターンで追加DMRSが配置されてもよい。図13のオプション2では、前方配置DMRSの1シンボル目と2シンボル目を置換したパターンを追加DMRSのパターンとし、前方配置DMRSと追加DMRSとで周波数領域において異なるコームパターンとすることができる。
Further, as shown in option 2 of FIG. 13, additional DMRS may be arranged with the same density and a different pattern as the front-arranged DMRS. In option 2 of FIG. 13, the pattern in which the first symbol and the second symbol of the front-arranged DMRS are replaced can be used as the pattern of the additional DMRS, and the comb pattern of the front-arranged DMRS and the additional DMRS can be different in the frequency domain.
図14は、本発明の実施の形態におけるDMRSの配置例(8)を示す図である。追加DMRSは、前方配置DMRSと異なる時間領域における密度であってもよいし、前方配置DMRSと異なる周波数領域における密度であってもよい。例えば、追加DMRSは、時間変化が大きいチャネルを使用する高速度で移動する端末20を主な対象とするため、周波数領域において追加DMRSの密度が低くなるリソースエレメントは、前方配置DMRSによって補完され得る。
FIG. 14 is a diagram showing an example (8) of arrangement of DMRS in the embodiment of the present invention. The additional DMRS may have a density in a time domain different from that of the front-mounted DMRS, or may be a density in a frequency domain different from that of the front-mounted DMRS. For example, since the additional DMRS is primarily targeted at terminals 20 moving at high speeds using channels with large time variation, resource elements with low density of additional DMRS in the frequency domain can be complemented by the forward-located DMRS. ..
図14のオプション3-1のように、追加DMRSの配置を、前方配置DMRSの1シンボル目のみと同一とすることで、追加DMRSの時間領域における密度を前方配置DMRSの2分の1とし、追加DMRSの周波数領域における密度を前方配置DMRSの2分の1としてもよい。
By making the placement of the additional DMRS the same as only the first symbol of the front placement DMRS as in option 3-1 of FIG. 14, the density of the additional DMRS in the time domain is halved of the front placement DMRS. The density in the frequency domain of the additional DMRS may be halved of the forward-arranged DMRS.
図14のオプション3-2のように、追加DMRSを、周波数領域は2サブキャリアおきに2サブキャリア配置し、時間領域は2シンボル双方に配置することで、追加DMRSの時間領域における密度は前方配置DMRSと同一とし、追加DMRSの周波数領域における密度を前方配置DMRSの2分の1としてもよい。
By arranging the additional DMRS in the frequency domain every two subcarriers and arranging the time domain in both of the two symbols as in option 3-2 of FIG. 14, the density of the additional DMRS in the time domain is forward. It may be the same as the arrangement DMRS, and the density in the frequency domain of the additional DMRS may be halved of the front arrangement DMRS.
なお、上述の実施例におけるDMRSは、下りリンクに適用されてもよいし、上りリンクに適用されてもよい。また、基地局10はPDCCH及びPDSCHととともに上述の実施例におけるDMRSを送信し、端末20はDMRSに基づいてPDCCH及びPDSCHを復号してもよい。また、端末20はPUCCH及びPUSCHととともに上述の実施例におけるDMRSを送信し、基地局10はDMRSに基づいてPUCCH及びPUSCHを復号してもよい。
Note that the DMRS in the above-described embodiment may be applied to the downlink or the uplink. Further, the base station 10 may transmit the DMRS in the above-described embodiment together with the PDCCH and the PDSCH, and the terminal 20 may decode the PDCCH and the PDSCH based on the DMRS. Further, the terminal 20 may transmit the DMRS in the above-described embodiment together with the PUCCH and the PUSCH, and the base station 10 may decode the PUCCH and the PUSCH based on the DMRS.
また、端末20は上述の実施例におけるDMRSに係る設定を基地局10から受信してもよい。端末20は基地局10から受信した当該設定に基づいてDMRSを無線リソースに配置し、さらにデータを無線リソースに配置して、基地局10に送信してもよい。無線リソースとは、例えばリソースブロックであってもよいし、リソースエレメントであってもよいし、複数のシンボルであってもよい。
Further, the terminal 20 may receive the setting related to DMRS in the above-described embodiment from the base station 10. The terminal 20 may arrange the DMRS in the radio resource based on the setting received from the base station 10, further arrange the data in the radio resource, and transmit the data to the base station 10. The radio resource may be, for example, a resource block, a resource element, or a plurality of symbols.
上述の実施例により、基地局10及び端末20は、異なるコームパターンで異なるシンボルにDMRSを配置することで、DMRSの周波数領域の密度を確保しつつ、DMRSに使用するリソースを低減することができる。
According to the above embodiment, the base station 10 and the terminal 20 can reduce the resources used for the DMRS while ensuring the density of the frequency domain of the DMRS by arranging the DMRS in different symbols with different comb patterns. ..
すなわち、無線通信システムにおいて、通信品質を向上させ、かつオーバヘッドを抑制する参照信号を使用することができる。
That is, in a wireless communication system, a reference signal that improves communication quality and suppresses overhead can be used.
(装置構成)
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。 (Device configuration)
Next, a functional configuration example of thebase station 10 and the terminal 20 that execute the processes and operations described so far will be described. The base station 10 and the terminal 20 include a function for carrying out the above-described embodiment. However, the base station 10 and the terminal 20 may each have only a part of the functions in the embodiment.
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。 (Device configuration)
Next, a functional configuration example of the
<基地局10>
図15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15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15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。 <Base station 10>
FIG. 15 is a diagram showing an example of the functional configuration of thebase station 10 according to the embodiment of the present invention. As shown in FIG. 15, 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. 15 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.
図15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15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15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。 <
FIG. 15 is a diagram showing an example of the functional configuration of the
送信部110は、端末20側に送信する信号を生成し、当該信号を無線で送信する機能を含む。また、送信部110は、ネットワークノード間メッセージを他のネットワークノードに送信する。受信部120は、端末20から送信された各種の信号を受信し、受信した信号から、例えばより上位のレイヤの情報を取得する機能を含む。また、送信部110は、端末20へNR-PSS、NR-SSS、NR-PBCH、DL/UL制御信号等を送信する機能を有する。また、受信部120は、ネットワークノード間メッセージを他のネットワークノードから受信する。
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.
設定部130は、予め設定される設定情報、及び、端末20に送信する各種の設定情報を格納する。設定情報の内容は、例えば、DMRSの配置に係る情報等である。
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 arrangement of DMRS.
制御部140は、実施例において説明したように、DMRSの配置に係る制御を行う。また、制御部140は、DSSによる通信を制御する。制御部140における信号送信に関する機能部を送信部110に含め、制御部140における信号受信に関する機能部を受信部120に含めてもよい。
The control unit 140 controls the arrangement of DMRS as described in the embodiment. Further, the control unit 140 controls the communication by the DSS. 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.
<端末20>
図16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16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16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。 <Terminal 20>
FIG. 16 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention. As shown in FIG. 16, the terminal 20 has atransmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 16 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.
図16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16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16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。 <
FIG. 16 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention. As shown in FIG. 16, the terminal 20 has a
送信部210は、送信データから送信信号を作成し、当該送信信号を無線で送信する。受信部220は、各種の信号を無線受信し、受信した物理レイヤの信号からより上位のレイヤの信号を取得する。また、受信部220は、基地局10から送信されるNR-PSS、NR-SSS、NR-PBCH、DL/UL/SL制御信号等を受信する機能を有する。また、例えば、送信部210は、D2D通信として、他の端末20に、PSCCH(Physical Sidelink Control Channel)、PSSCH(Physical Sidelink Shared Channel)、PSDCH(Physical Sidelink Discovery Channel)、PSBCH(Physical Sidelink Broadcast Channel)等を送信し、受信部220は、他の端末20から、PSCCH、PSSCH、PSDCH又はPSBCH等を受信する。
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.
設定部230は、受信部220により基地局10から受信した各種の設定情報を格納する。また、設定部230は、予め設定される設定情報も格納する。設定情報の内容は、例えば、DMRSの配置に係る情報等である。
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 arrangement of DMRS.
制御部240は、実施例において説明したように、DMRSの配置に係る制御を行う。制御部240における信号送信に関する機能部を送信部210に含め、制御部240における信号受信に関する機能部を受信部220に含めてもよい。
The control unit 240 controls the arrangement of DMRS 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.
(ハードウェア構成)
上記実施形態の説明に用いたブロック図(図15及び図16)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。 (Hardware configuration)
The block diagram (FIGS. 15 and 16) used in the description of the above embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, 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.
上記実施形態の説明に用いたブロック図(図15及び図16)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。 (Hardware configuration)
The block diagram (FIGS. 15 and 16) used in the description of the above embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, 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.
機能には、判断、決定、判定、計算、算出、処理、導出、調査、探索、確認、受信、送信、出力、アクセス、解決、選択、選定、確立、比較、想定、期待、見做し、報知(broadcasting)、通知(notifying)、通信(communicating)、転送(forwarding)、構成(configuring)、再構成(reconfiguring)、割り当て(allocating、mapping)、割り振り(assigning)などがあるが、これらに限られない。たとえば、送信を機能させる機能ブロック(構成部)は、送信部(transmitting unit)や送信機(transmitter)と呼称される。いずれも、上述したとおり、実現方法は特に限定されない。
Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't. For example, a functional block (configuration unit) that makes transmission function is called a transmitting unit (transmitting unit) or a transmitter (transmitter). In each case, as described above, the realization method is not particularly limited.
例えば、本開示の一実施の形態における基地局10、端末20等は、本開示の無線通信方法の処理を行うコンピュータとして機能してもよい。図17は、本開示の一実施の形態に係る基地局10及び端末20のハードウェア構成の一例を示す図である。上述の基地局10及び端末20は、物理的には、プロセッサ1001、記憶装置1002、補助記憶装置1003、通信装置1004、入力装置1005、出力装置1006、バス1007などを含むコンピュータ装置として構成されてもよい。
For example, 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. 17 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.
なお、以下の説明では、「装置」という文言は、回路、デバイス、ユニット等に読み替えることができる。基地局10及び端末20のハードウェア構成は、図に示した各装置を1つ又は複数含むように構成されてもよいし、一部の装置を含まずに構成されてもよい。
In the following explanation, 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.
基地局10及び端末20における各機能は、プロセッサ1001、記憶装置1002等のハードウェア上に所定のソフトウェア(プログラム)を読み込ませることによって、プロセッサ1001が演算を行い、通信装置1004による通信を制御したり、記憶装置1002及び補助記憶装置1003におけるデータの読み出し及び書き込みの少なくとも一方を制御したりすることによって実現される。
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.
プロセッサ1001は、例えば、オペレーティングシステムを動作させてコンピュータ全体を制御する。プロセッサ1001は、周辺装置とのインタフェース、制御装置、演算装置、レジスタ等を含む中央処理装置(CPU:Central Processing Unit)で構成されてもよい。例えば、上述の制御部140、制御部240等は、プロセッサ1001によって実現されてもよい。
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. For example, the above-mentioned control unit 140, control unit 240, and the like may be realized by the processor 1001.
また、プロセッサ1001は、プログラム(プログラムコード)、ソフトウェアモジュール又はデータ等を、補助記憶装置1003及び通信装置1004の少なくとも一方から記憶装置1002に読み出し、これらに従って各種の処理を実行する。プログラムとしては、上述の実施の形態において説明した動作の少なくとも一部をコンピュータに実行させるプログラムが用いられる。例えば、図15に示した基地局10の制御部140は、記憶装置1002に格納され、プロセッサ1001で動作する制御プログラムによって実現されてもよい。また、例えば、図16に示した端末20の制御部240は、記憶装置1002に格納され、プロセッサ1001で動作する制御プログラムによって実現されてもよい。上述の各種処理は、1つのプロセッサ1001によって実行される旨を説明してきたが、2以上のプロセッサ1001により同時又は逐次に実行されてもよい。プロセッサ1001は、1以上のチップによって実装されてもよい。なお、プログラムは、電気通信回線を介してネットワークから送信されてもよい。
Further, 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. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the control unit 140 of the base station 10 shown in FIG. 15 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Further, for example, the control unit 240 of the terminal 20 shown in FIG. 16 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Although it has been described that 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.
記憶装置1002は、コンピュータ読み取り可能な記録媒体であり、例えば、ROM(Read Only Memory)、EPROM(Erasable Programmable ROM)、EEPROM(Electrically Erasable Programmable ROM)、RAM(Random Access Memory)等の少なくとも1つによって構成されてもよい。記憶装置1002は、レジスタ、キャッシュ、メインメモリ(主記憶装置)等と呼ばれてもよい。記憶装置1002は、本開示の一実施の形態に係る通信方法を実施するために実行可能なプログラム(プログラムコード)、ソフトウェアモジュール等を保存することができる。
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.
補助記憶装置1003は、コンピュータ読み取り可能な記録媒体であり、例えば、CD-ROM(Compact Disc ROM)等の光ディスク、ハードディスクドライブ、フレキシブルディスク、光磁気ディスク(例えば、コンパクトディスク、デジタル多用途ディスク、Blu-ray(登録商標)ディスク)、スマートカード、フラッシュメモリ(例えば、カード、スティック、キードライブ)、フロッピー(登録商標)ディスク、磁気ストリップ等の少なくとも1つによって構成されてもよい。上述の記憶媒体は、例えば、記憶装置1002及び補助記憶装置1003の少なくとも一方を含むデータベース、サーバその他の適切な媒体であってもよい。
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.
通信装置1004は、有線ネットワーク及び無線ネットワークの少なくとも一方を介してコンピュータ間の通信を行うためのハードウェア(送受信デバイス)であり、例えばネットワークデバイス、ネットワークコントローラ、ネットワークカード、通信モジュールなどともいう。通信装置1004は、例えば周波数分割複信(FDD:Frequency Division Duplex)及び時分割複信(TDD:Time Division Duplex)の少なくとも一方を実現するために、高周波スイッチ、デュプレクサ、フィルタ、周波数シンセサイザなどを含んで構成されてもよい。例えば、送受信アンテナ、アンプ部、送受信部、伝送路インターフェース等は、通信装置1004によって実現されてもよい。送受信部は、送信部と受信部とで、物理的に、または論理的に分離された実装がなされてもよい。
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. For example, the transmission / reception antenna, the amplifier unit, the transmission / reception unit, the transmission line interface, and the like may be realized by the communication device 1004. The transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
入力装置1005は、外部からの入力を受け付ける入力デバイス(例えば、キーボード、マウス、マイクロフォン、スイッチ、ボタン、センサ等)である。出力装置1006は、外部への出力を実施する出力デバイス(例えば、ディスプレイ、スピーカー、LEDランプ等)である。なお、入力装置1005及び出力装置1006は、一体となった構成(例えば、タッチパネル)であってもよい。
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).
また、プロセッサ1001及び記憶装置1002等の各装置は、情報を通信するためのバス1007によって接続される。バス1007は、単一のバスを用いて構成されてもよいし、装置間ごとに異なるバスを用いて構成されてもよい。
Further, 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.
また、基地局10及び端末20は、マイクロプロセッサ、デジタル信号プロセッサ(DSP:Digital Signal Processor)、ASIC(Application Specific Integrated Circuit)、PLD(Programmable Logic Device)、FPGA(Field Programmable Gate Array)等のハードウェアを含んで構成されてもよく、当該ハードウェアにより、各機能ブロックの一部又は全てが実現されてもよい。例えば、プロセッサ1001は、これらのハードウェアの少なくとも1つを用いて実装されてもよい。
Further, 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.
(実施の形態のまとめ)
以上、説明したように、本発明の実施の形態によれば、参照信号に係る設定を基地局から受信する受信部と、前記設定に基づく第1の参照信号と、データとをリソースに配置する制御部と、前記リソースを前記基地局に送信する送信部とを有し、前記制御部は、前記リソースに含まれる連続する第1のシンボル及び第2のシンボルに、周波数領域の配置が異なる型式で、前記リソースのすべての周波数領域に前記第1の参照信号を配置する端末が提供される。 (Summary of embodiments)
As described above, according to the embodiment of the present invention, the receiving unit that receives the setting related to the reference signal from the base station, the first reference signal based on the setting, and the data are arranged in the resource. The control unit has a control unit and a transmission unit that transmits the resource to the base station, and the control unit has a type in which the arrangement of the frequency domain is different between the continuous first symbol and the second symbol included in the resource. A terminal for arranging the first reference signal in all frequency domains of the resource is provided.
以上、説明したように、本発明の実施の形態によれば、参照信号に係る設定を基地局から受信する受信部と、前記設定に基づく第1の参照信号と、データとをリソースに配置する制御部と、前記リソースを前記基地局に送信する送信部とを有し、前記制御部は、前記リソースに含まれる連続する第1のシンボル及び第2のシンボルに、周波数領域の配置が異なる型式で、前記リソースのすべての周波数領域に前記第1の参照信号を配置する端末が提供される。 (Summary of embodiments)
As described above, according to the embodiment of the present invention, the receiving unit that receives the setting related to the reference signal from the base station, the first reference signal based on the setting, and the data are arranged in the resource. The control unit has a control unit and a transmission unit that transmits the resource to the base station, and the control unit has a type in which the arrangement of the frequency domain is different between the continuous first symbol and the second symbol included in the resource. A terminal for arranging the first reference signal in all frequency domains of the resource is provided.
上記の構成により、端末20は、異なるコームパターンで異なるシンボルにDMRSを配置することで、DMRSの周波数領域の密度を確保しつつ、DMRSに使用するリソースを低減することができる。すなわち、無線通信システムにおいて、通信品質を向上させ、かつオーバヘッドを抑制する参照信号を使用することができる。
With the above configuration, the terminal 20 can reduce the resources used for DMRS while ensuring the density of the frequency domain of DMRS by arranging DMRS on different symbols with different comb patterns. That is, in a wireless communication system, a reference signal that improves communication quality and suppresses overhead can be used.
前記型式は、一部の周波数領域に前記第1の参照信号が配置されないコームパターンであってもよい。当該構成により、端末20は、コームパターンを使用することでDMRSに使用するリソースを減少させることができる。
The model may be a comb pattern in which the first reference signal is not arranged in a part of the frequency domain. With this configuration, the terminal 20 can reduce the resources used for DMRS by using the comb pattern.
前記コームパターンは、1サブキャリアおきに前記第1の参照信号が配置される型式であるか、又は2サブキャリアおきに前記第1の参照信号が配置される型式であってもよい。当該構成により、端末20は、コームパターンを使用することでDMRSに使用するリソースを減少させることができる。
The comb pattern may be a type in which the first reference signal is arranged every other subcarrier, or a type in which the first reference signal is arranged every two subcarriers. With this configuration, the terminal 20 can reduce the resources used for DMRS by using the comb pattern.
前記制御部は、前記第1のシンボル及び前記第2のシンボルにTD-OCC(Time Division Orthogonal Cover Code)を適用してもよい。当該構成により、端末20は、DMRSのポート数を増加させることができる。
The control unit may apply a TD-OCC (Time Division Orthogonal Cover Code) to the first symbol and the second symbol. With this configuration, the terminal 20 can increase the number of DMRS ports.
前記制御部は、前記第1の参照信号の密度と異なる密度で第2の参照信号を前記リソースに配置してもよい。当該構成により、端末20は、追加DMRSに使用するリソースを減少させることができる。
The control unit may arrange the second reference signal in the resource at a density different from the density of the first reference signal. With this configuration, the terminal 20 can reduce the resources used for the additional DMRS.
また、本発明の実施の形態によれば、参照信号に係る設定を基地局から受信する受信手順と、前記設定に基づく第1の参照信号と、データとをリソースに配置する制御手順と、前記リソースを前記基地局に送信する送信手順とを端末が実行し、前記制御手順は、前記リソースに含まれる連続する第1のシンボル及び第2のシンボルに、周波数領域の配置が異なる型式で、前記リソースのすべての周波数領域に前記第1の参照信号を配置する手順を含む通信方法が提供される。
Further, according to the embodiment of the present invention, a reception procedure for receiving a setting related to a reference signal from a base station, a control procedure for arranging a first reference signal based on the setting and data in a resource, and the above-mentioned. The terminal executes a transmission procedure for transmitting the resource to the base station, and the control procedure is a type in which the frequency domain arrangement is different between the continuous first symbol and the second symbol included in the resource. A communication method is provided that includes a procedure for arranging the first reference signal in all frequency domains of the resource.
上記の構成により、端末20は、異なるコームパターンで異なるシンボルにDMRSを配置することで、DMRSの周波数領域の密度を確保しつつ、DMRSに使用するリソースを低減することができる。すなわち、無線通信システムにおいて、通信品質を向上させ、かつオーバヘッドを抑制する参照信号を使用することができる。
With the above configuration, the terminal 20 can reduce the resources used for DMRS while ensuring the density of the frequency domain of DMRS by arranging DMRS in different symbols with different comb patterns. That is, in a wireless communication system, a reference signal that improves communication quality and suppresses overhead can be used.
(実施形態の補足)
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。 (Supplement to the embodiment)
Although the embodiments of the present invention have been described above, the disclosed inventions are not limited to such embodiments, and those skilled in the art will understand various modifications, modifications, alternatives, substitutions, and the like. There will be. Although explanations have been given using specific numerical examples in order to promote understanding of the invention, these numerical values are merely examples and any appropriate value may be used unless otherwise specified. The classification of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in another item. May apply (as long as there is no conflict) to the matters described in. The boundary of the functional part or the processing part in the functional block diagram does not always correspond to the boundary of the physical component. 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. Regarding the processing procedure described in the embodiment, the processing order may be changed as long as there is no contradiction. For convenience of processing, thebase 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.
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。 (Supplement to the embodiment)
Although the embodiments of the present invention have been described above, the disclosed inventions are not limited to such embodiments, and those skilled in the art will understand various modifications, modifications, alternatives, substitutions, and the like. There will be. Although explanations have been given using specific numerical examples in order to promote understanding of the invention, these numerical values are merely examples and any appropriate value may be used unless otherwise specified. The classification of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in another item. May apply (as long as there is no conflict) to the matters described in. The boundary of the functional part or the processing part in the functional block diagram does not always correspond to the boundary of the physical component. 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. Regarding the processing procedure described in the embodiment, the processing order may be changed as long as there is no contradiction. For convenience of processing, the
また、情報の通知は、本開示で説明した態様/実施形態に限られず、他の方法を用いて行われてもよい。例えば、情報の通知は、物理レイヤシグナリング(例えば、DCI(Downlink Control Information)、UCI(Uplink Control Information))、上位レイヤシグナリング(例えば、RRC(Radio Resource Control)シグナリング、MAC(Medium Access Control)シグナリング、報知情報(MIB(Master Information Block)、SIB(System Information Block))、その他の信号又はこれらの組み合わせによって実施されてもよい。また、RRCシグナリングは、RRCメッセージと呼ばれてもよく、例えば、RRC接続セットアップ(RRC Connection Setup)メッセージ、RRC接続再構成(RRC Connection Reconfiguration)メッセージ等であってもよい。
Further, the notification of information is not limited to the embodiment / embodiment described in the present disclosure, and may be performed by using another method. For example, 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.
本開示において説明した各態様/実施形態は、LTE(Long Term Evolution)、LTE-A(LTE-Advanced)、SUPER 3G、IMT-Advanced、4G(4th generation mobile communication system)、5G(5th generation mobile communication system)、FRA(Future Radio Access)、NR(new Radio)、W-CDMA(登録商標)、GSM(登録商標)、CDMA2000、UMB(Ultra Mobile Broadband)、IEEE 802.11(Wi-Fi(登録商標))、IEEE 802.16(WiMAX(登録商標))、IEEE 802.20、UWB(Ultra-WideBand)、Bluetooth(登録商標)、その他の適切なシステムを利用するシステム及びこれらに基づいて拡張された次世代システムの少なくとも一つに適用されてもよい。また、複数のシステムが組み合わされて(例えば、LTE及びLTE-Aの少なくとも一方と5Gとの組み合わせ等)適用されてもよい。
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).
本明細書で説明した各態様/実施形態の処理手順、シーケンス、フローチャート等は、矛盾の無い限り、順序を入れ替えてもよい。例えば、本開示において説明した方法については、例示的な順序を用いて様々なステップの要素を提示しており、提示した特定の順序に限定されない。
The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.
本明細書において基地局10によって行われるとした特定動作は、場合によってはその上位ノード(upper node)によって行われることもある。基地局10を有する1つ又は複数のネットワークノード(network nodes)からなるネットワークにおいて、端末20との通信のために行われる様々な動作は、基地局10及び基地局10以外の他のネットワークノード(例えば、MME又はS-GW等が考えられるが、これらに限られない)の少なくとも1つによって行われ得ることは明らかである。上記において基地局10以外の他のネットワークノードが1つである場合を例示したが、他のネットワークノードは、複数の他のネットワークノードの組み合わせ(例えば、MME及びS-GW)であってもよい。
In some cases, the specific operation performed by the base station 10 in the present specification may be performed by its upper node (upper node). In a network consisting of one or more network nodes having a base station 10, 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). In the above example, 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). ..
本開示において説明した情報又は信号等は、上位レイヤ(又は下位レイヤ)から下位レイヤ(又は上位レイヤ)へ出力され得る。複数のネットワークノードを介して入出力されてもよい。
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.
入出力された情報等は特定の場所(例えば、メモリ)に保存されてもよいし、管理テーブルを用いて管理してもよい。入出力される情報等は、上書き、更新、又は追記され得る。出力された情報等は削除されてもよい。入力された情報等は他の装置へ送信されてもよい。
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.
本開示における判定は、1ビットで表される値(0か1か)によって行われてもよいし、真偽値(Boolean:true又はfalse)によって行われてもよいし、数値の比較(例えば、所定の値との比較)によって行われてもよい。
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).
ソフトウェアは、ソフトウェア、ファームウェア、ミドルウェア、マイクロコード、ハードウェア記述言語と呼ばれるか、他の名称で呼ばれるかを問わず、命令、命令セット、コード、コードセグメント、プログラムコード、プログラム、サブプログラム、ソフトウェアモジュール、アプリケーション、ソフトウェアアプリケーション、ソフトウェアパッケージ、ルーチン、サブルーチン、オブジェクト、実行可能ファイル、実行スレッド、手順、機能などを意味するよう広く解釈されるべきである。
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.
また、ソフトウェア、命令、情報などは、伝送媒体を介して送受信されてもよい。例えば、ソフトウェアが、有線技術(同軸ケーブル、光ファイバケーブル、ツイストペア、デジタル加入者回線(DSL:Digital Subscriber Line)など)及び無線技術(赤外線、マイクロ波など)の少なくとも一方を使用してウェブサイト、サーバ、又は他のリモートソースから送信される場合、これらの有線技術及び無線技術の少なくとも一方は、伝送媒体の定義内に含まれる。
Further, software, instructions, information, etc. may be transmitted and received via 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.). When transmitted from a server or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.
本開示において説明した情報、信号などは、様々な異なる技術のいずれかを使用して表されてもよい。例えば、上記の説明全体に渡って言及され得るデータ、命令、コマンド、情報、信号、ビット、シンボル、チップなどは、電圧、電流、電磁波、磁界若しくは磁性粒子、光場若しくは光子、又はこれらの任意の組み合わせによって表されてもよい。
The information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques. For example, 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.
なお、本開示において説明した用語及び本開示の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル及びシンボルの少なくとも一方は信号(シグナリング)であってもよい。また、信号はメッセージであってもよい。また、コンポーネントキャリア(CC:Component Carrier)は、キャリア周波数、セル、周波数キャリアなどと呼ばれてもよい。
The terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, the signal may be a message. Further, the component carrier (CC: Component Carrier) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
本開示において使用する「システム」及び「ネットワーク」という用語は、互換的に使用される。
The terms "system" and "network" used in this disclosure are used interchangeably.
また、本開示において説明した情報、パラメータなどは、絶対値を用いて表されてもよいし、所定の値からの相対値を用いて表されてもよいし、対応する別の情報を用いて表されてもよい。例えば、無線リソースはインデックスによって指示されるものであってもよい。
Further, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, the radio resource may be one indicated by an index.
上述したパラメータに使用する名称はいかなる点においても限定的な名称ではない。さらに、これらのパラメータを使用する数式等は、本開示で明示的に開示したものと異なる場合もある。様々なチャネル(例えば、PUCCH、PDCCHなど)及び情報要素は、あらゆる好適な名称によって識別できるので、これらの様々なチャネル及び情報要素に割り当てている様々な名称は、いかなる点においても限定的な名称ではない。
The names used for the above parameters are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those expressly disclosed in this disclosure. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect limited names. is not it.
本開示においては、「基地局(BS:Base Station)」、「無線基地局」、「基地局装置」、「固定局(fixed station)」、「NodeB」、「eNodeB(eNB)」、「gNodeB(gNB)」、「アクセスポイント(access point)」、「送信ポイント(transmission point)」、「受信ポイント(reception point)、「送受信ポイント(transmission/reception point)」、「セル」、「セクタ」、「セルグループ」、「キャリア」、「コンポーネントキャリア」などの用語は、互換的に使用され得る。基地局は、マクロセル、スモールセル、フェムトセル、ピコセルなどの用語で呼ばれる場合もある。
In this disclosure, "base station (BS: Base Station)", "wireless base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB" (GNB) ”,“ 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.
基地局は、1つ又は複数(例えば、3つ)のセルを収容することができる。基地局が複数のセルを収容する場合、基地局のカバレッジエリア全体は複数のより小さいエリアに区分でき、各々のより小さいエリアは、基地局サブシステム(例えば、屋内用の小型基地局(RRH:Remote Radio Head)によって通信サービスを提供することもできる。「セル」又は「セクタ」という用語は、このカバレッジにおいて通信サービスを行う基地局及び基地局サブシステムの少なくとも一方のカバレッジエリアの一部又は全体を指す。
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.
本開示においては、「移動局(MS:Mobile Station)」、「ユーザ端末(user terminal)」、「ユーザ装置(UE:User Equipment)」、「端末」などの用語は、互換的に使用され得る。
In the present disclosure, terms such as "mobile station (MS: Mobile Station)", "user terminal", "user device (UE: User Equipment)", and "terminal" may be used interchangeably. ..
移動局は、当業者によって、加入者局、モバイルユニット、加入者ユニット、ワイヤレスユニット、リモートユニット、モバイルデバイス、ワイヤレスデバイス、ワイヤレス通信デバイス、リモートデバイス、モバイル加入者局、アクセス端末、モバイル端末、ワイヤレス端末、リモート端末、ハンドセット、ユーザエージェント、モバイルクライアント、クライアント、又はいくつかの他の適切な用語で呼ばれる場合もある。
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.
基地局及び移動局の少なくとも一方は、送信装置、受信装置、通信装置などと呼ばれてもよい。なお、基地局及び移動局の少なくとも一方は、移動体に搭載されたデバイス、移動体自体などであってもよい。当該移動体は、乗り物(例えば、車、飛行機など)であってもよいし、無人で動く移動体(例えば、ドローン、自動運転車など)であってもよいし、ロボット(有人型又は無人型)であってもよい。なお、基地局及び移動局の少なくとも一方は、必ずしも通信動作時に移動しない装置も含む。例えば、基地局及び移動局の少なくとも一方は、センサなどのIoT(Internet of Things)機器であってもよい。
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. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of a base station and a mobile station may be an IoT (Internet of Things) device such as a sensor.
また、本開示における基地局は、ユーザ端末で読み替えてもよい。例えば、基地局及びユーザ端末間の通信を、複数の端末20間の通信(例えば、D2D(Device-to-Device)、V2X(Vehicle-to-Everything)などと呼ばれてもよい)に置き換えた構成について、本開示の各態様/実施形態を適用してもよい。この場合、上述の基地局10が有する機能を端末20が有する構成としてもよい。また、「上り」及び「下り」などの文言は、端末間通信に対応する文言(例えば、「サイド(side)」)で読み替えられてもよい。例えば、上りチャネル、下りチャネルなどは、サイドチャネルで読み替えられてもよい。
Further, the base station in the present disclosure may be read by the user terminal. For example, 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.). Each aspect / embodiment of the present disclosure may be applied to the configuration. In this case, the terminal 20 may have the functions of the base station 10 described above. Further, the words such as "up" and "down" may be read as words corresponding to the communication between terminals (for example, "side"). For example, the upstream channel, the downstream channel, and the like may be read as a side channel.
同様に、本開示におけるユーザ端末は、基地局で読み替えてもよい。この場合、上述のユーザ端末が有する機能を基地局が有する構成としてもよい。
Similarly, the user terminal in the present disclosure may be read as a base station. In this case, the base station may have the functions of the above-mentioned user terminal.
本開示で使用する「判断(determining)」、「決定(determining)」という用語は、多種多様な動作を包含する場合がある。「判断」、「決定」は、例えば、判定(judging)、計算(calculating)、算出(computing)、処理(processing)、導出(deriving)、調査(investigating)、探索(looking up、search、inquiry)(例えば、テーブル、データベース又は別のデータ構造での探索)、確認(ascertaining)した事を「判断」「決定」したとみなす事などを含み得る。また、「判断」、「決定」は、受信(receiving)(例えば、情報を受信すること)、送信(transmitting)(例えば、情報を送信すること)、入力(input)、出力(output)、アクセス(accessing)(例えば、メモリ中のデータにアクセスすること)した事を「判断」「決定」したとみなす事などを含み得る。また、「判断」、「決定」は、解決(resolving)、選択(selecting)、選定(choosing)、確立(establishing)、比較(comparing)などした事を「判断」「決定」したとみなす事を含み得る。つまり、「判断」「決定」は、何らかの動作を「判断」「決定」したとみなす事を含み得る。また、「判断(決定)」は、「想定する(assuming)」、「期待する(expecting)」、「みなす(considering)」などで読み替えられてもよい。
The terms "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". Also, "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". In addition, "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.
「接続された(connected)」、「結合された(coupled)」という用語、又はこれらのあらゆる変形は、2又はそれ以上の要素間の直接的又は間接的なあらゆる接続又は結合を意味し、互いに「接続」又は「結合」された2つの要素間に1又はそれ以上の中間要素が存在することを含むことができる。要素間の結合又は接続は、物理的なものであっても、論理的なものであっても、或いはこれらの組み合わせであってもよい。例えば、「接続」は「アクセス」で読み替えられてもよい。本開示で使用する場合、2つの要素は、1又はそれ以上の電線、ケーブル及びプリント電気接続の少なくとも一つを用いて、並びにいくつかの非限定的かつ非包括的な例として、無線周波数領域、マイクロ波領域及び光(可視及び不可視の両方)領域の波長を有する電磁エネルギーなどを用いて、互いに「接続」又は「結合」されると考えることができる。
The terms "connected", "coupled", or any variation thereof, mean 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. For example, "connection" may be read as "access". As used in the present disclosure, 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.
参照信号は、RS(Reference Signal)と略称することもでき、適用される標準によってパイロット(Pilot)と呼ばれてもよい。
The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applied standard.
本開示において使用する「に基づいて」という記載は、別段に明記されていない限り、「のみに基づいて」を意味しない。言い換えれば、「に基づいて」という記載は、「のみに基づいて」と「に少なくとも基づいて」の両方を意味する。
The statement "based on" used in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".
本開示において使用する「第1の」、「第2の」などの呼称を使用した要素へのいかなる参照も、それらの要素の量又は順序を全般的に限定しない。これらの呼称は、2つ以上の要素間を区別する便利な方法として本開示において使用され得る。したがって、第1及び第2の要素への参照は、2つの要素のみが採用され得ること、又は何らかの形で第1の要素が第2の要素に先行しなければならないことを意味しない。
Any reference 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.
上記の各装置の構成における「手段」を、「部」、「回路」、「デバイス」等に置き換えてもよい。
The "means" in the configuration of each of the above devices may be replaced with a "part", a "circuit", a "device", or the like.
本開示において、「含む(include)」、「含んでいる(including)」及びそれらの変形が使用されている場合、これらの用語は、用語「備える(comprising)」と同様に、包括的であることが意図される。さらに、本開示において使用されている用語「又は(or)」は、排他的論理和ではないことが意図される。
When "include", "including" and variations thereof are used in the present disclosure, these terms are as inclusive as the term "comprising". Is intended. Moreover, the term "or" used in the present disclosure is intended not to be an exclusive OR.
無線フレームは時間領域において1つ又は複数のフレームによって構成されてもよい。時間領域において1つ又は複数の各フレームはサブフレームと呼ばれてもよい。サブフレームは更に時間領域において1つ又は複数のスロットによって構成されてもよい。サブフレームは、ニューメロロジ(numerology)に依存しない固定の時間長(例えば、1ms)であってもよい。
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.
ニューメロロジは、ある信号又はチャネルの送信及び受信の少なくとも一方に適用される通信パラメータであってもよい。ニューメロロジは、例えば、サブキャリア間隔(SCS:SubCarrier Spacing)、帯域幅、シンボル長、サイクリックプレフィックス長、送信時間間隔(TTI:Transmission Time Interval)、TTIあたりのシンボル数、無線フレーム構成、送受信機が周波数領域において行う特定のフィルタリング処理、送受信機が時間領域において行う特定のウィンドウイング処理などの少なくとも1つを示してもよい。
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, 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.
スロットは、時間領域において1つ又は複数のシンボル(OFDM(Orthogonal Frequency Division Multiplexing)シンボル、SC-FDMA(Single Carrier Frequency Division Multiple Access)シンボル等)で構成されてもよい。スロットは、ニューメロロジに基づく時間単位であってもよい。
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.
スロットは、複数のミニスロットを含んでもよい。各ミニスロットは、時間領域において1つ又は複数のシンボルによって構成されてもよい。また、ミニスロットは、サブスロットと呼ばれてもよい。ミニスロットは、スロットよりも少ない数のシンボルによって構成されてもよい。ミニスロットより大きい時間単位で送信されるPDSCH(又はPUSCH)は、PDSCH(又はPUSCH)マッピングタイプAと呼ばれてもよい。ミニスロットを用いて送信されるPDSCH(又はPUSCH)は、PDSCH(又はPUSCH)マッピングタイプBと呼ばれてもよい。
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.
無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルは、いずれも信号を伝送する際の時間単位を表す。無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルは、それぞれに対応する別の呼称が用いられてもよい。
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.
例えば、1サブフレームは送信時間間隔(TTI:Transmission Time Interval)と呼ばれてもよいし、複数の連続したサブフレームがTTIと呼ばれてよいし、1スロット又は1ミニスロットがTTIと呼ばれてもよい。つまり、サブフレーム及びTTIの少なくとも一方は、既存のLTEにおけるサブフレーム(1ms)であってもよいし、1msより短い期間(例えば、1-13シンボル)であってもよいし、1msより長い期間であってもよい。なお、TTIを表す単位は、サブフレームではなくスロット、ミニスロットなどと呼ばれてもよい。
For example, 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. 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.
ここで、TTIは、例えば、無線通信におけるスケジューリングの最小時間単位のことをいう。例えば、LTEシステムでは、基地局が各端末20に対して、無線リソース(各端末20において使用することが可能な周波数帯域幅、送信電力など)を、TTI単位で割り当てるスケジューリングを行う。なお、TTIの定義はこれに限られない。
Here, TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, 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は、チャネル符号化されたデータパケット(トランスポートブロック)、コードブロック、コードワードなどの送信時間単位であってもよいし、スケジューリング、リンクアダプテーションなどの処理単位となってもよい。なお、TTIが与えられたとき、実際にトランスポートブロック、コードブロック、コードワードなどがマッピングされる時間区間(例えば、シンボル数)は、当該TTIよりも短くてもよい。
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. When a TTI is given, the time interval (for example, the number of symbols) to which the transport block, code block, code word, etc. are actually mapped may be shorter than the TTI.
なお、1スロット又は1ミニスロットがTTIと呼ばれる場合、1以上のTTI(すなわち、1以上のスロット又は1以上のミニスロット)が、スケジューリングの最小時間単位となってもよい。また、当該スケジューリングの最小時間単位を構成するスロット数(ミニスロット数)は制御されてもよい。
When one slot or one mini slot is called TTI, one or more TTIs (that is, one or more slots or one or more mini slots) 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.
1msの時間長を有するTTIは、通常TTI(LTE Rel.8-12におけるTTI)、ノーマルTTI、ロングTTI、通常サブフレーム、ノーマルサブフレーム、ロングサブフレーム、スロットなどと呼ばれてもよい。通常TTIより短いTTIは、短縮TTI、ショートTTI、部分TTI(partial又はfractional TTI)、短縮サブフレーム、ショートサブフレーム、ミニスロット、サブスロット、スロットなどと呼ばれてもよい。
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.
なお、ロングTTI(例えば、通常TTI、サブフレームなど)は、1msを超える時間長を有するTTIで読み替えてもよいし、ショートTTI(例えば、短縮TTIなど)は、ロングTTIのTTI長未満かつ1ms以上のTTI長を有するTTIで読み替えてもよい。
The long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (eg, shortened TTI, etc.) may be read as a TTI less than the TTI length of the long TTI and 1 ms. It may be read as TTI having the above TTI length.
リソースブロック(RB)は、時間領域及び周波数領域のリソース割当単位であり、周波数領域において、1つ又は複数個の連続した副搬送波(subcarrier)を含んでもよい。RBに含まれるサブキャリアの数は、ニューメロロジに関わらず同じであってもよく、例えば12であってもよい。RBに含まれるサブキャリアの数は、ニューメロロジに基づいて決定されてもよい。
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.
また、RBの時間領域は、1つ又は複数個のシンボルを含んでもよく、1スロット、1ミニスロット、1サブフレーム、又は1TTIの長さであってもよい。1TTI、1サブフレームなどは、それぞれ1つ又は複数のリソースブロックで構成されてもよい。
Further, 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.
なお、1つ又は複数のRBは、物理リソースブロック(PRB:Physical RB)、サブキャリアグループ(SCG:Sub-Carrier Group)、リソースエレメントグループ(REG:Resource Element Group)、PRBペア、RBペアなどと呼ばれてもよい。
In addition, 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.
また、リソースブロックは、1つ又は複数のリソースエレメント(RE:Resource Element)によって構成されてもよい。例えば、1REは、1サブキャリア及び1シンボルの無線リソース領域であってもよい。
Further, the resource block may be composed of one or a plurality of resource elements (RE: Resource Element). For example, 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
帯域幅部分(BWP:Bandwidth Part)(部分帯域幅などと呼ばれてもよい)は、あるキャリアにおいて、あるニューメロロジ用の連続する共通RB(common resource blocks)のサブセットのことを表してもよい。ここで、共通RBは、当該キャリアの共通参照ポイントを基準としたRBのインデックスによって特定されてもよい。PRBは、あるBWPで定義され、当該BWP内で番号付けされてもよい。
The bandwidth part (BWP: 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. Here, the common RB may be specified by the index of the RB with respect to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.
BWPには、UL用のBWP(UL BWP)と、DL用のBWP(DL BWP)とが含まれてもよい。UEに対して、1キャリア内に1つ又は複数のBWPが設定されてもよい。
The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be set in one carrier for the UE.
設定されたBWPの少なくとも1つがアクティブであってもよく、UEは、アクティブなBWPの外で所定の信号/チャネルを送受信することを想定しなくてもよい。なお、本開示における「セル」、「キャリア」などは、「BWP」で読み替えられてもよい。
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. In addition, "cell", "carrier" and the like in this disclosure may be read as "BWP".
上述した無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルなどの構造は例示に過ぎない。例えば、無線フレームに含まれるサブフレームの数、サブフレーム又は無線フレームあたりのスロットの数、スロット内に含まれるミニスロットの数、スロット又はミニスロットに含まれるシンボル及びRBの数、RBに含まれるサブキャリアの数、並びにTTI内のシンボル数、シンボル長、サイクリックプレフィックス(CP:Cyclic Prefix)長などの構成は、様々に変更することができる。
The above-mentioned structures such as wireless frames, subframes, slots, mini-slots and symbols are merely examples. For example, 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.
本開示において、例えば、英語でのa, an及びtheのように、翻訳により冠詞が追加された場合、本開示は、これらの冠詞の後に続く名詞が複数形であることを含んでもよい。
In the present disclosure, if articles are added by translation, for example, a, an and the in English, the disclosure may include the plural nouns following these articles.
本開示において、「AとBが異なる」という用語は、「AとBが互いに異なる」ことを意味してもよい。なお、当該用語は、「AとBがそれぞれCと異なる」ことを意味してもよい。「離れる」、「結合される」などの用語も、「異なる」と同様に解釈されてもよい。
In the present disclosure, 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".
本開示において説明した各態様/実施形態は単独で用いてもよいし、組み合わせて用いてもよいし、実行に伴って切り替えて用いてもよい。また、所定の情報の通知(例えば、「Xであること」の通知)は、明示的に行うものに限られず、暗黙的(例えば、当該所定の情報の通知を行わない)ことによって行われてもよい。
Each aspect / embodiment described in the present disclosure may be used alone, in combination, or may be switched and used according to the execution. Further, 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.
なお、本開示におけるDMRSは、参照信号の一例である。前方配置DMRSは、第1の参照信号の一例である。追加DMRSは、第2の参照信号の一例である。PDCCH及びPDSCH、PUCCH及びPUSCHは、データの一例である。
Note that DMRS in the present disclosure is an example of a reference signal. The front-mounted DMRS is an example of a first reference signal. The additional DMRS is an example of a second reference signal. PDCCH and PDSCH, PUCCH and PUSCH are examples of data.
以上、本開示について詳細に説明したが、当業者にとっては、本開示が本開示中に説明した実施形態に限定されるものではないということは明らかである。本開示は、請求の範囲の記載により定まる本開示の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。したがって、本開示の記載は、例示説明を目的とするものであり、本開示に対して何ら制限的な意味を有するものではない。
Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure may be implemented as amendments and modifications without departing from the spirit and scope of the present disclosure, which is determined by the description of the scope of claims. Therefore, the description of this disclosure is for purposes of illustration and does not have any limiting meaning to this disclosure.
10 基地局
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 10Base 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
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 10
Claims (6)
- 参照信号に係る設定を基地局から受信する受信部と、
前記設定に基づく第1の参照信号と、データとをリソースに配置する制御部と、
前記リソースを前記基地局に送信する送信部とを有し、
前記制御部は、前記リソースに含まれる連続する第1のシンボル及び第2のシンボルに、周波数領域の配置が異なる型式で、前記リソースのすべての周波数領域に前記第1の参照信号を配置する端末。 A receiver that receives the settings related to the reference signal from the base station,
A first reference signal based on the above settings, a control unit that arranges data in resources, and
It has a transmitter that transmits the resource to the base station.
The control unit arranges the first reference signal in all the frequency domains of the resource in a type in which the frequency domains are arranged differently in the continuous first symbol and the second symbol included in the resource. .. - 前記型式は、一部の周波数領域に前記第1の参照信号が配置されないコームパターンである請求項1記載の端末。 The terminal according to claim 1, wherein the model is a comb pattern in which the first reference signal is not arranged in a part of the frequency domain.
- 前記コームパターンは、1サブキャリアおきに前記第1の参照信号が配置される型式であるか、又は2サブキャリアおきに前記第1の参照信号が配置される型式である請求項2記載の端末。 The terminal according to claim 2, wherein the comb pattern is a type in which the first reference signal is arranged every other subcarrier, or a type in which the first reference signal is arranged every two subcarriers. ..
- 前記制御部は、前記第1のシンボル及び前記第2のシンボルにTD-OCC(Time Division Orthogonal Cover Code)を適用する請求項3記載の端末。 The terminal according to claim 3, wherein the control unit applies TD-OCC (Time Division Orthogonal Cover Code) to the first symbol and the second symbol.
- 前記制御部は、前記第1の参照信号の密度と異なる密度で第2の参照信号を前記リソースに配置する請求項1記載の端末。 The terminal according to claim 1, wherein the control unit arranges a second reference signal in the resource at a density different from that of the first reference signal.
- 参照信号に係る設定を基地局から受信する受信手順と、
前記設定に基づく第1の参照信号と、データとをリソースに配置する制御手順と、
前記リソースを前記基地局に送信する送信手順とを端末が実行し、
前記制御手順は、前記リソースに含まれる連続する第1のシンボル及び第2のシンボルに、周波数領域の配置が異なる型式で、前記リソースのすべての周波数領域に前記第1の参照信号を配置する手順を含む通信方法。 The reception procedure for receiving the settings related to the reference signal from the base station, and
A control procedure for allocating a first reference signal based on the above settings and data to a resource, and
The terminal executes the transmission procedure of transmitting the resource to the base station, and the terminal executes the transmission procedure.
The control procedure is a procedure for arranging the first reference signal in all the frequency domains of the resource in a type in which the frequency domains are arranged differently in the continuous first symbol and the second symbol included in the resource. Communication methods including.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2020/030283 WO2022029986A1 (en) | 2020-08-06 | 2020-08-06 | Terminal and communication method |
JP2022541071A JPWO2022029986A1 (en) | 2020-08-06 | 2020-08-06 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2020/030283 WO2022029986A1 (en) | 2020-08-06 | 2020-08-06 | Terminal and communication method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022029986A1 true WO2022029986A1 (en) | 2022-02-10 |
Family
ID=80117193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2020/030283 WO2022029986A1 (en) | 2020-08-06 | 2020-08-06 | Terminal and communication method |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2022029986A1 (en) |
WO (1) | WO2022029986A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017107212A1 (en) * | 2015-12-25 | 2017-06-29 | Intel IP Corporation | System and method for pusch resource mapping in fd-mimo system |
JP2020504925A (en) * | 2017-01-09 | 2020-02-13 | エルジー エレクトロニクス インコーポレイティド | Method and apparatus for transmitting a reference signal in a wireless communication system |
-
2020
- 2020-08-06 WO PCT/JP2020/030283 patent/WO2022029986A1/en active Application Filing
- 2020-08-06 JP JP2022541071A patent/JPWO2022029986A1/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017107212A1 (en) * | 2015-12-25 | 2017-06-29 | Intel IP Corporation | System and method for pusch resource mapping in fd-mimo system |
JP2020504925A (en) * | 2017-01-09 | 2020-02-13 | エルジー エレクトロニクス インコーポレイティド | Method and apparatus for transmitting a reference signal in a wireless communication system |
Non-Patent Citations (1)
Title |
---|
LENOVO, MOTOROLA MOBILITY: "Discussion on UL DMRS indication", 3GPP DRAFT; R1-1712682, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Prague, P.R. Czech; 20170821 - 20170825, 20 August 2017 (2017-08-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051315495 * |
Also Published As
Publication number | Publication date |
---|---|
JPWO2022029986A1 (en) | 2022-02-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020194760A1 (en) | User device and base station device | |
WO2021044603A1 (en) | Terminal and communication method | |
WO2021152860A1 (en) | Terminal and communication method | |
JPWO2020170405A1 (en) | User equipment and base station equipment | |
WO2021029077A1 (en) | User equipment | |
WO2021029078A1 (en) | Terminal | |
WO2022009288A1 (en) | Terminal, base station, and communication method | |
WO2021214920A1 (en) | Terminal | |
WO2021140673A1 (en) | Terminal and communication method | |
WO2021149110A1 (en) | Terminal and communication method | |
JP7073529B2 (en) | Terminals, base stations and communication methods | |
US12016035B2 (en) | User equipment and base station device | |
JPWO2020100379A1 (en) | User equipment and base station equipment | |
WO2022149223A1 (en) | Terminal, base station, and communication method | |
WO2022149194A1 (en) | Terminal, base station, and communication method | |
WO2022079781A1 (en) | Terminal, base station, and communication method | |
WO2020246185A1 (en) | Terminal and base station | |
WO2021161483A1 (en) | Terminal, and communication method | |
WO2021140665A1 (en) | Terminal and communication method | |
WO2021038920A1 (en) | Terminal, base station and communication method | |
WO2021161484A1 (en) | Terminal and communication method | |
WO2022029986A1 (en) | Terminal and communication method | |
WO2021029002A1 (en) | Terminal | |
JPWO2020170445A1 (en) | User equipment and base station equipment | |
WO2022044141A1 (en) | Terminal, base station, and communication method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20947992 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022541071 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20947992 Country of ref document: EP Kind code of ref document: A1 |