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WO2023195084A1 - Terminal, station de base et procédé de communication - Google Patents

Terminal, station de base et procédé de communication Download PDF

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Publication number
WO2023195084A1
WO2023195084A1 PCT/JP2022/017129 JP2022017129W WO2023195084A1 WO 2023195084 A1 WO2023195084 A1 WO 2023195084A1 JP 2022017129 W JP2022017129 W JP 2022017129W WO 2023195084 A1 WO2023195084 A1 WO 2023195084A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
uplink
downlink
base station
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/017129
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English (en)
Japanese (ja)
Inventor
知也 小原
拓真 中村
浩樹 原田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to JP2024513604A priority Critical patent/JPWO2023195084A1/ja
Priority to PCT/JP2022/017129 priority patent/WO2023195084A1/fr
Publication of WO2023195084A1 publication Critical patent/WO2023195084A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • the present invention relates to a terminal, a base station, and a communication method in a wireless communication system.
  • NR New Radio
  • LTE Long Term Evolution
  • 6G the next generation wireless communication system for 5G
  • 5G wireless quality will exceed that of 5G
  • 6G will further increase capacity, use new frequency bands, lower latency, higher reliability, further reduce power consumption, and expand into new areas (high altitude, sea, etc.) with non-terrestrial networks.
  • Studies are underway to expand coverage in space (for example, non-patent document 2).
  • the present invention has been made in view of the above points, and an object of the present invention is to suitably switch the band for transmitting uplink in a wireless communication system.
  • a transmitter transmits an uplink at each of a first port and a second port, and an associated downlink is configured at at least one of the first port and the second port.
  • a terminal When switching to transmission of an uplink that is not configured, a terminal is provided that includes a control unit that associates a certain downlink with the uplink for which the associated downlink is not configured.
  • FIG. 1 is a diagram showing a configuration example (1) of a wireless communication system in an embodiment of the present invention.
  • FIG. 2 is a diagram showing a configuration example (2) of a wireless communication system in an embodiment of the present invention. It is a figure which shows the example (1) of band switching in embodiment of this invention. It is a figure which shows the example (2) of band switching in embodiment of this invention. It is a figure which shows the example (3) of band switching in embodiment of this invention. It is a figure which shows the example (4) of band switching in embodiment of this invention. It is a figure which shows the example (5) of band switching in embodiment of this invention. It is a figure which shows the example (6) of band switching in embodiment of this invention.
  • FIG. 1 is a diagram showing an example of a functional configuration of a base station 10 according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing an example of a functional configuration of a terminal 20 according to an embodiment of the present invention.
  • 1 is a diagram showing an example of a hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention. It is a figure showing an example of composition of vehicle 2001 in an embodiment of the present invention.
  • LTE Long Term Evolution
  • NR system after LTE-Advanced
  • SS Synchronization signal
  • PSS Primary SS
  • SSS Secondary SS
  • PBCH Physical broadcast channel
  • PRACH Physical Terms such as random access channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (for example, Flexible Duplex, etc.). This method may also be used.
  • configure the wireless parameters etc. may mean pre-configuring a predetermined value, or may mean that the base station 10 or Wireless parameters notified from the terminal 20 may also be set.
  • FIG. 1 is a diagram showing a configuration example (1) of a wireless communication system according to an embodiment of the present invention.
  • a wireless communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is just an example, and there may be a plurality of each.
  • 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 a radio signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks. Good too.
  • Base station 10 transmits a synchronization signal and system information to terminal 20.
  • the synchronization signals are, for example, NR-PSS and NR-SSS.
  • System information is transmitted, for example, on NR-PBCH, and is also referred to as broadcast information.
  • the synchronization signal and system information may be called SSB (SS/PBCH block). As shown in FIG.
  • the base station 10 transmits a control signal or data to the terminal 20 on the DL (Downlink), and receives the control signal or data from the terminal 20 on the 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) and a primary cell (PCell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary SCG cell (PSCell) of another base station 10 using DC (Dual Connectivity).
  • SCell secondary cell
  • PCell primary cell
  • DC Direct Connectivity
  • the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 via DL, and transmits control signals or data to the base station 10 via UL, thereby receiving various types of information provided by the wireless communication system. Use communication services. Furthermore, the terminal 20 receives various reference signals transmitted from the base station 10, and measures the channel quality based on the reception results of the reference signals.
  • a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine).
  • M2M Machine-to-Machine
  • the terminal 20 is capable of performing carrier aggregation in which multiple cells (multiple CCs (Component Carriers)) are bundled to communicate with the base station 10.
  • multiple CCs Component Carriers
  • carrier aggregation one PCell (Primary cell) and one or more SCells (Secondary cells) are used.
  • SCells Secondary cells
  • PUCCH-SCell with PUCCH may be used.
  • FIG. 2 is a diagram showing an example (2) of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 shows an example of the configuration of a wireless communication system when dual connectivity (DC) is implemented.
  • a base station 10A serving as an MN (Master Node) and a base station 10B serving as an SN (Secondary Node) are provided.
  • Base station 10A and base station 10B are each connected to a core network.
  • Terminal 20 can communicate with both base station 10A and base station 10B.
  • the cell group provided by the base station 10A, which is an MN, is called an MCG (Master Cell Group), and the cell group provided by the base station 10B, which is an SN, is called an SCG (Secondary Cell Group).
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • the MCG is composed of one PCell and one or more SCells
  • the SCG is composed of one PSCell (Primary SCG Cell) and one or more SCells.
  • the processing operations in this embodiment may be executed with the system configuration shown in FIG. 1, may be executed with the system configuration shown in FIG. 2, or may be executed with a system configuration other than these.
  • FIG. 3 is a diagram showing an example (1) of band switching in the embodiment of the present invention. Studies are being conducted to enhance UL transmission over multiple carriers. As shown in FIG. 3, an operation is being considered in which a terminal that supports up to two transmissions at the same time in Frequency Range 1 (FR1) dynamically switches the band for transmitting UL across three or four bands. In the example of FIG. 3, each of the two ports can switch which of band A, band B, band C, and band D to use.
  • FR1 Frequency Range 1
  • UL carrier no DL carrier
  • UL carrier with DL carrier
  • the terminal 20 or the base station 10 may execute options 1) to 5) shown below.
  • the DL carrier associated with the switched UL carrier may be defined or notified as a DL carrier associated with another carrier.
  • the DL carrier associated with the switched UL carrier is defined as a DL carrier associated with another UL carrier in the same TAG as the switched UL carrier, or You may be notified.
  • the DL carrier associated with the UL carrier before switching may be defined or notified as the DL carrier associated with the UL carrier after switching.
  • Option 4 Depending on the type of TAG or the number of DL carriers in the TAG, conditions under which one or more of options 1) to 3) are applied may be set or defined.
  • the number of UL carriers (no DL carriers) that can belong to one TAG may be limited.
  • a DL carrier associated with the switched UL carrier may be defined or notified as a DL carrier associated with another carrier.
  • FIG. 4 is a diagram showing an example (2) of band switching in the embodiment of the present invention.
  • the terminal 20 when switching or setting UL transmission from a band A UL carrier to a band B UL carrier for which no DL carrier is set, uses the band A DL carrier before switching.
  • the carrier may be a DL carrier associated with a Band B UL carrier.
  • the terminal 20 when switching or setting UL transmission from a band C UL carrier to a band D UL carrier for which no DL carrier is set, the terminal 20 may The DL carrier may be associated with the band D UL carrier.
  • the associated DL carrier may be a DL carrier of SPCell (Special Cell), that is, PCell (Primary Cell) or PSCell (Primary SCG Cell).
  • SPCell Specific Cell
  • PCell Primary Cell
  • PSCell Primary SCG Cell
  • the network may notify in advance which DL carrier is to be associated.
  • the DL carrier associated with the UL carrier after switching is defined or notified as a DL carrier associated with another UL carrier in the same TAG as the UL carrier after switching. Good too.
  • band A and band B belong to TAG1
  • band C and band D belong to TAG2.
  • the terminal 20 uses a band A UL carrier that belongs to the same TAG as the band B UL carrier after switching.
  • the DL carrier of Band A before switching associated with the carrier may be the DL carrier associated with the UL carrier of Band B.
  • the terminal 20 transmits data to the band D after switching.
  • the DL carrier of band C before switching which is associated with the UL carrier of band C that belongs to the same TAG as the UL carrier of , may be used as the DL carrier that is associated with the UL carrier of band D.
  • the associated DL carrier may be a DL carrier of SPCell (Special Cell), that is, PCell (Primary Cell) or PSCell (Primary SCG Cell).
  • the network when switching transmission to a UL carrier (no DL carrier), the network will notify you in advance which DL carrier will be associated with the UL carrier belonging to the same TAG as the UL carrier after switching. It's okay.
  • the DL carrier associated with the UL carrier before switching may be defined or notified as the DL carrier associated with the UL carrier after switching.
  • FIG. 5 is a diagram showing an example (3) of band switching in the embodiment of the present invention.
  • the DL carrier of band A associated with the UL carrier of band A before switching may be switched to the DL carrier of band B associated with the UL carrier of band B after switching. That is, when switching the UL carrier, the DL carrier may also be switched. Information on the DL carrier associated with the UL carrier after switching may be notified in advance from the network.
  • FIG. 6 is a diagram showing an example (4) of band switching in the embodiment of the present invention.
  • band A, band B, and band C belong to TAG1, and band D belongs to TAG2.
  • DL carriers are set in band A and band B.
  • the number of DL carriers in TAG1 to which band C belongs is 2, so options 1) to 3) do not need to be applied. That is, if the carrier in the TAG to which the switched UL carrier belongs is not 0, options 1) to 3) may not be applied.
  • FIG. 7 is a diagram showing an example (5) of band switching in the embodiment of the present invention.
  • band A and band B belong to TAG1
  • band C and band D belong to TAG2.
  • a DL carrier is set to band A.
  • the DL carrier in TAG2 to which band C belongs is 0, so options 1) to 3) may be applied. That is, if the carrier in the TAG to which the switched UL carrier belongs is 0, options 1) to 3) may be applied.
  • options 1) to 3) may be applied only when the TAG to which the switched UL carrier belongs is a PTAG. Furthermore, options 1) to 3) may be applied when the carrier in the TAG to which the UL carrier after switching belongs is 0, and the TAG to which the UL carrier after switching belongs is PTAG.
  • the above option 5 will be explained below.
  • the number of UL carriers (without DL carriers) that can belong to one TAG may be limited.
  • FIG. 8 is a diagram showing an example (6) of band switching in the embodiment of the present invention.
  • it may be restricted that 2 UL carriers (no DL carrier) belong to TAG1. That is, 2 UL carriers (no DL carrier) may not be set in TAG1.
  • it may be restricted that one UL carrier (no DL carrier) belongs to TAG2. That is, 1 UL carrier (no DL carrier) may not be set in TAG2.
  • the restriction may be defined by the specifications, or may be notified from the terminal 20 to the base station 10 as the UE capability.
  • up to the number of UL carriers (with DL carriers) belonging to the TAG it may be possible to set up UL carriers (without DL carriers) in the TAG.
  • the band may be replaced with the carrier.
  • the UL in the above-described embodiments may be a SUL (Supplementary Uplink) or a non-SUL (non-SUL).
  • the combination of UL transmission in the above embodiments may be any combination of SUL and SUL, SUL and non-SUL, or non-SUL and non-SUL.
  • port 1 selects from 4 carriers and port 2 selects from 4 carriers
  • port 1 selects from 2 carriers and port 2 selects from 2 carriers.
  • the number of carriers differs, such as a case where port 1 selects from 1 carrier and port 2 selects from 3 carriers, or a case where port 1 selects from 3 carriers and port 2 selects from 1 carrier.
  • the embodiments described above may be applied in the case.
  • TAG1 includes 2 cells and TAG2 includes 2 cells
  • TAG1 includes 1 cell
  • TAG2 includes 3 cells
  • TAGs are set, such as a case where TAG2 contains one cell, a case where TAG1 contains one cell, TAG2 contains three cells, and TAG3 contains two cells.
  • the base station 10 and the terminal 20 when transmitting two uplinks, switch the band for transmitting the uplink, including the uplink to which no associated downlink is set. Can be switched.
  • the band for transmitting uplink can be suitably switched.
  • Base station 10 and terminal 20 include functionality to implement the embodiments described above. However, the base station 10 and the terminal 20 may each have only some of the functions in the embodiment.
  • FIG. 9 is a diagram showing an example of the functional configuration of base station 10 in an embodiment of the present invention.
  • base station 10 includes a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
  • the functional configuration shown in FIG. 9 is only an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and functional parts may have any names.
  • the transmitting unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly.
  • the transmitting unit 110 also transmits network node-to-network messages to other network nodes.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information on a higher layer from the received signals.
  • the transmitter 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, etc. to the terminal 20. Further, the receiving unit 120 receives messages between network nodes from other network nodes.
  • the setting unit 130 stores setting information set in advance and various setting information to be sent to the terminal 20.
  • the content of the setting information is, for example, information related to multi-carrier scheduling.
  • the control unit 140 performs control related to multicarrier scheduling, as described in the embodiment.
  • a functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120.
  • FIG. 10 is a diagram showing an example of the functional configuration of the terminal 20 in the embodiment of the present invention.
  • the terminal 20 includes a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
  • the functional configuration shown in FIG. 10 is only an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and functional parts may have any names.
  • the transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and obtains higher layer signals from the received physical layer signals. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, etc. transmitted from the base station 10.
  • the transmitter 210 transmits a PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) to another terminal 20 as D2D communication.
  • the receiving unit 220 receives PSCCH, PSSCH, PSDCH, PSBCH, etc. from other terminals 20 .
  • the setting unit 230 stores various types of setting information received from the base station 10 by the receiving unit 220.
  • the setting unit 230 also stores setting information that is set in advance.
  • the content of the setting information is, for example, information related to multi-carrier scheduling.
  • the control unit 240 performs control related to multicarrier scheduling, as described in the embodiment.
  • a functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.
  • each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
  • the functional block may be realized by combining software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't do it.
  • a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.
  • the base station 10, terminal 20, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 11 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure.
  • the base station 10 and terminal 20 described above are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc. Good too.
  • the word “apparatus” can be read as a circuit, a device, a unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.
  • Each function in the base station 10 and the terminal 20 is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004. This is realized by controlling at least one of reading and writing data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 for example, operates an operating system to control the entire computer.
  • the processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be implemented by the processor 1001.
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes in accordance with these.
  • programs program codes
  • software modules software modules
  • data etc.
  • the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
  • the control unit 140 of the base station 10 shown in FIG. 9 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 10 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
  • Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.
  • the storage device 1002 is a computer-readable recording medium, such as at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
  • the storage device 1002 may be called a register, cache, main memory, or the like.
  • the storage device 1002 can store executable programs (program codes), software modules, and the like to implement a communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray disk, etc.). -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or other suitable medium.
  • 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 a network device, network controller, network card, communication module, etc., for example.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • the transmitting and receiving unit may be physically or logically separated into a transmitting unit and a receiving unit.
  • the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that 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 a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses for each device.
  • the base station 10 and the terminal 20 also include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA).
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • a part or all of each functional block may be realized by the hardware.
  • processor 1001 may be implemented using at least one of these hardwares.
  • FIG. 12 shows an example of the configuration of the vehicle 2001.
  • a vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, a front wheel 2007, a rear wheel 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021 to 2029. , an information service section 2012 and a communication module 2013.
  • Each aspect/embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, may be applied to communication module 2013.
  • the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
  • the steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service department 2012 includes various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide various information such as driving information, traffic information, and entertainment information, as well as one or more devices that control these devices. It consists of an ECU.
  • the information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 2001 using information acquired from an external device via the communication module 2013 and the like.
  • the driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden.
  • the system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
  • Communication module 2013 can communicate with microprocessor 2031 and components of vehicle 2001 via a communication port.
  • the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, electronic Data is transmitted and received between the microprocessor 2031, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the control unit 2010.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, or the like.
  • the communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication.
  • the communication module 2013 also receives the front wheel and rear wheel rotational speed signals inputted to the electronic control unit 2010 and acquired by the rotational speed sensor 2022, the front wheel and rear wheel air pressure signals acquired by the air pressure sensor 2023, and the vehicle speed sensor. 2024, an acceleration signal obtained by acceleration sensor 2025, an accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by brake pedal sensor 2026, and a shift lever.
  • a shift lever operation signal acquired by the sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028 are also transmitted to the external device via wireless communication.
  • the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 2012 provided in the vehicle 2001.
  • Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive section 2002, steering section 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheel 2007, rear wheel 2008, and axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029, etc. may be controlled.
  • a transmitter that transmits an uplink at each of the first port and the second port, and at least one of the first port and the second port.
  • a terminal when switching to transmission of an uplink for which an associated downlink is not set, a terminal is provided, the terminal having a control unit for associating a certain downlink with the uplink for which an associated downlink is not set.
  • the base station 10 and the terminal 20 when the base station 10 and the terminal 20 are transmitting two uplinks, the base station 10 and the terminal 20 switch the band for transmitting the uplink, including the uplink to which no associated downlink is set as the switching destination. be able to. That is, in the wireless communication system, the band for transmitting uplink can be suitably switched.
  • the control unit may associate the downlink that was associated with the uplink before switching with the uplink for which the associated downlink is not set.
  • the base station 10 and the terminal 20 can switch the band for transmitting the uplink, including the uplink for which no associated downlink is set as the switching destination. Can be done.
  • the control unit may cause the uplink to which the downlink to be associated is not set to be associated with another uplink belonging to the same TAG (Timing Advance Group) as the uplink to which the downlink to be associated is not set. You may also associate links. With this configuration, when the base station 10 and the terminal 20 are transmitting two uplinks, the base station 10 and the terminal 20 can switch the band for transmitting the uplink, including the uplink for which no associated downlink is set as the switching destination. I can do it.
  • the control unit determines that the associated downlink is not configured.
  • a certain downlink may be associated with an uplink.
  • a receiving unit that receives an uplink at each of the first port and the second port, and at least one of the first port and the second port are associated with each other.
  • a base station When switching to reception of an uplink for which a downlink to be associated is not set, a base station is provided that includes a control unit that associates a certain downlink with the uplink for which an associated downlink is not set.
  • the base station 10 and the terminal 20 when the base station 10 and the terminal 20 are transmitting two uplinks, the base station 10 and the terminal 20 switch the band for transmitting the uplink, including the uplink to which no associated downlink is set as the switching destination. be able to. That is, in the wireless communication system, the band for transmitting uplink can be suitably switched.
  • the transmission procedure of transmitting an uplink at each of the first port and the second port, and the association at least one of the first port and the second port is provided.
  • a communication method is provided in which a terminal executes a control procedure for associating a certain downlink with the uplink for which an associated downlink is not configured when switching to uplink transmission for which a downlink to be associated is not configured.
  • the base station 10 and the terminal 20 when the base station 10 and the terminal 20 are transmitting two uplinks, the base station 10 and the terminal 20 switch the band for transmitting the uplink, including the uplink to which no associated downlink is set as the switching destination. be able to. That is, in the wireless communication system, the band for transmitting uplink can be suitably switched.
  • the operations of a plurality of functional sections may be physically performed by one component, or the operations of one functional section may be physically performed by a plurality of components.
  • the order of processing may be changed as long as there is no contradiction.
  • Software operated by the processor included in the base station 10 according to the embodiment of the present invention and software operated by the processor included in the terminal 20 according to the embodiment of the present invention are respectively random access memory (RAM), flash memory, and read-only memory. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
  • the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods.
  • the notification of information may be physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling). , broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • Each aspect/embodiment described in this disclosure is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system). system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is an integer or decimal number, for example)), FRA (Future Radio Access), NR (new Radio), New radio access ( NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802 Systems that utilize .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and that are extended, modified, created, and defined based on these.
  • the present invention may be
  • the base station 10 may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal 20 are performed by the base station 10 and other network nodes other than the base station 10. It is clear that this can be done by at least one of the following: for example, MME or S-GW (possible, but not limited to).
  • MME Mobility Management Entity
  • S-GW Packet Control Function
  • the other network node may be a combination of multiple other network nodes (for example, MME and S-GW).
  • the information, signals, etc. described in this disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.
  • the input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.
  • the determination in the present disclosure may be performed based on a value represented by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (e.g. , comparison with a predetermined value).
  • Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • a transmission medium For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to create a website, When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
  • At least one of the channel and the symbol may be a signal.
  • the signal may be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” are used interchangeably.
  • radio resources may be indicated by an index.
  • Base Station BS
  • wireless base station base station
  • base station device fixed station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (RRHs)). Communication services can also be provided by Remote Radio Head).
  • RRHs small indoor base stations
  • Communication services can also be provided by Remote Radio Head).
  • the term "cell” or “sector” refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, etc.
  • the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like.
  • the moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and the 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 replaced by a user terminal.
  • communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
  • the terminal 20 may have the functions that the base station 10 described above has.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be replaced with side channels.
  • the user terminal in the present disclosure may be replaced with a base station.
  • the base station may have the functions that the user terminal described above has.
  • determining may encompass a wide variety of operations.
  • “Judgment” and “decision” include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a “judgment” or “decision.”
  • judgment and “decision” refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access.
  • (accessing) may include considering something as a “judgment” or “decision.”
  • judgment and “decision” refer to resolving, selecting, choosing, establishing, comparing, etc. as “judgment” and “decision”. may be included.
  • judgment and “decision” may include regarding some action as having been “judged” or “determined.”
  • judgment (decision) may be read as “assuming", “expecting", “considering”, etc.
  • connection refers to any connection or coupling, direct or indirect, between two or more elements and to each other. It may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled.”
  • the bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
  • two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applied standard.
  • RS Reference Signal
  • the phrase “based on” does not mean “based solely on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using the designations "first,” “second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
  • a radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may also be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, and transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • transmitter/receiver transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
  • a slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI.
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
  • TTI refers to, for example, the minimum time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
  • TTI is not limited to this.
  • the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling.
  • the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on newerology.
  • the time domain of an RB may include one or more symbols, and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs include physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. May be called.
  • PRBs physical resource blocks
  • SCGs sub-carrier groups
  • REGs resource element groups
  • PRB pairs RB pairs, etc. May be called.
  • a resource block may be configured by one or more resource elements (REs).
  • REs resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a partial bandwidth or the like) may represent a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier.
  • the common RB may be specified by an RB index based on a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured within one carrier for a UE.
  • At least one of the configured BWPs may be active and the UE may not expect to transmit or receive a given signal/channel outside of the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
  • radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB, Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
  • a and B are different may mean “A and B are different from each other.” Note that the term may also mean that "A and B are each different from C”. Terms such as “separate” and “coupled” may also be interpreted similarly to “different.”
  • notification of prescribed information is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.
  • Base station 110 Transmitting section 120 Receiving section 130 Setting section 140 Control section 20 Terminal 210 Transmitting section 220 Receiving section 230 Setting section 240 Control section 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Driving part 2003 Restoration Part 2004 Axel Pedal 2005 Brake Pedal 2006 Shift Lever 2007 Front wheels 2008 Bearing 2009 Axis 2010 Electronic Control Division 2012 Electronic Control Division 20133 Communication Modular 2021 Current sensor 2022 Round Sensor 2023 Air pressure sensor 2024 vehicle speed Sensen Sa 2025 acceleration sensor 2026 brake Pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system section 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Un terminal présente une unité de transmission pour transmettre une liaison montante dans chacun d'un premier et d'un second port, ainsi qu'une unité de commande qui, lors de la commutation dans au moins l'un des premier et second ports vers la transmission d'une liaison montante pour laquelle une liaison descendante à associer à celle-ci n'est pas définie, associe une certaine liaison descendante à la liaison montante pour laquelle une liaison descendante à associer à celle-ci n'est pas définie.
PCT/JP2022/017129 2022-04-05 2022-04-05 Terminal, station de base et procédé de communication Ceased WO2023195084A1 (fr)

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Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
VIVO: "R17 TX switching enhancements", 3GPP DRAFT; R2-2108671, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. E-Meeting; 20210816 - 20210827, 6 August 2021 (2021-08-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052035006 *
ZTE: "Considerations on potential further enhancements for CA", 3GPP DRAFT; R1-2106751, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210816 - 20210827, 7 August 2021 (2021-08-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052038016 *

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