WO2020255420A1 - Terminal - Google Patents

Terminal Download PDF

Info

Publication number
WO2020255420A1
WO2020255420A1 PCT/JP2019/024842 JP2019024842W WO2020255420A1 WO 2020255420 A1 WO2020255420 A1 WO 2020255420A1 JP 2019024842 W JP2019024842 W JP 2019024842W WO 2020255420 A1 WO2020255420 A1 WO 2020255420A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
scell
terminal
pucch
base station
Prior art date
Application number
PCT/JP2019/024842
Other languages
English (en)
Japanese (ja)
Inventor
徹 内野
祐輝 松村
高橋　秀明
Original Assignee
株式会社Ｎｔｔドコモ
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 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to PCT/JP2019/024842 priority Critical patent/WO2020255420A1/fr
Publication of WO2020255420A1 publication Critical patent/WO2020255420A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to a terminal that recovers from a beam failure.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • 5G New Radio NR
  • the terminal can detect the beam failure and send a beam failure recovery (BFR) request to the radio base station. It is specified (see Non-Patent Document 1).
  • the number of SCells is larger than the number of PCells. Conceivable.
  • the radio base station monitors the quality information in the SCell transmitted from the terminal, and switches the beam when a beam failure in the SCell is detected.
  • PUCCH-SCell an SCell in which a physical uplink control channel (PUCCH) is set.
  • the terminal cannot report the quality information in SCell to the wireless base station using PUCCH-SCell.
  • the radio base station cannot detect the beam failure in the SCell, so that the beam cannot be switched.
  • the present invention has been made in view of such a situation, and a failure has occurred in a specific cell used for reporting quality information, which is a terminal for setting a primary cell and a secondary cell at the same time. Even in the case, it is an object of the present invention to provide a terminal capable of performing beam switching in a secondary cell.
  • the terminal (200) is a terminal that sets a primary cell (PCell) and a secondary cell (SCell) at the same time, and when a predetermined condition is satisfied, quality information of the secondary cell (SCell).
  • a control unit (250) that switches a specific cell (PUCCH-SCell) in which an uplink channel (PUCCH) used for transmitting is set to another cell (cell other than PUCCH-SCell), and the other cells mentioned above.
  • a transmission unit (210) for transmitting the quality information using a cell (a cell other than the PUCCH-SCell) is provided.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10.
  • FIG. 2 is a diagram illustrating transmission of a reference signal using beamforming.
  • FIG. 3 is a diagram illustrating a PUCCH group.
  • FIG. 4 is a functional block configuration diagram of the terminal 200.
  • FIG. 5 is a diagram for explaining beam switching at the time of beam failure.
  • FIG. 6 is a diagram showing an operation flow of the terminal 200 when the reception signal of the reference signal is transmitted.
  • FIG. 7 is a diagram illustrating an example of cell switching used for transmitting the reception quality of the reference signal.
  • FIG. 8 is a diagram showing an operation flow of the terminal 200 at the time of a beam failure.
  • FIG. 9 is a diagram showing an example of the hardware configuration of the terminal 200.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10 according to the embodiment.
  • the wireless communication system 10 is a wireless communication system according to 5G (NR).
  • the wireless communication system 10 includes wireless base stations 100, 110 and terminals 200.
  • Terminal 200 is also referred to as a user equipment (UE) or media access control (MAC) entity.
  • UE user equipment
  • MAC media access control
  • the specific configuration of the wireless communication system 10 including the number of wireless base stations and terminals is not limited to the example shown in FIG.
  • Each of the radio base stations 100 and 110 is gNB or eg-eNB and is included in the Next Generation-Radio Access Network (NG-RAN, not shown).
  • the NR-RAN is connected to a core network (5GC, not shown) according to the NR.
  • NG-RAN and 5GC may be simply expressed as "network”.
  • the wireless base stations 100, 110 execute wireless communication according to NR between the wireless base stations 100, 110 and the terminal 200.
  • Radio base stations 100, 110 and terminal 200 use Massive MIMO, which generates a beam with higher directivity by controlling radio signals transmitted from a plurality of antenna elements, and carrier aggregation using a plurality of component carriers (CC).
  • CA component carriers
  • DC dual connectivity
  • CC is also called a carrier.
  • serving cells are classified as follows.
  • the serving cell is a cell in which a wireless link is established between the terminal and the cell.
  • the group of serving cells associated with the radio base station (master node, MN) that provides the control plane connected to the core network is called the master cell group (MCG).
  • MCG is composed of a primary cell (hereinafter, PCell) and one or more secondary cells (hereinafter, SCell).
  • PCell is the cell used by the terminal to initiate an initial connection with MN.
  • a group of serving cells associated with a radio base station (secondary node, SN) that does not provide a control plane connected to the core network and provides additional resources to the terminal is called a secondary cell group (SCG).
  • SCG secondary cell group
  • the SCG is composed of a primary SCell (hereinafter, PSCell) and one or more SCells.
  • PSCell is a cell used by a terminal to initiate an initial connection with an SN.
  • PCell is also called a special cell (SpCell) in MCG.
  • PSCell is also called SpCell in SCG.
  • the radio base station 100 forms a PCell.
  • the radio base station 110 forms an SCell.
  • the SCell formed by the radio base station 110 is within the coverage area of the PCell formed by the radio base station 100.
  • the PCell may be formed by the radio base station 110.
  • the SCell may be formed by the radio base station 100.
  • Terminal 200 sets PCell and SCell at the same time.
  • the radio base station 110 includes a multi-element antenna, and beamforming can be formed by using a plurality of beams.
  • the terminal 200 can transmit and receive a radio signal between the radio base station 110 and the terminal 200 by establishing a beam pair between the radio base station 110 and the terminal 200.
  • FIG. 2 is a diagram illustrating transmission of a reference signal using beamforming by the radio base station 110.
  • the radio base station 110 transmits reference signals RS1 to RS7 for each beam in the SCell.
  • the reference signal RS2 is a reference signal transmitted by the terminal 200 using a beam for which a beam pair is currently established.
  • Reference signals RS1 to RS7 are, for example, channel quality information reference signals (CSI-RS) or synchronization signal blocks (SSB).
  • CSI-RS channel quality information reference signals
  • SSB synchronization signal blocks
  • the terminal 200 When the terminal 200 receives the reference signals RS1 to RS7, the terminal 200 measures the reception quality of the reference signals RS1 to RS7 (for example, layer 1-reference signal reception power, L1-RSRP).
  • the reception quality of the reference signals RS1 to RS7 for example, layer 1-reference signal reception power, L1-RSRP.
  • the terminal 200 reports the reception quality of the reference signal to the radio base station 100 as the measurement result in the SCell. Specifically, the terminal 200 reports the reception quality of a predetermined number (for example, 1, 2 or 4) of the reception qualities of the reference signals RS1 to RS7 to the radio base station 100. The number of reception qualities of the reference signal reported to the radio base station 100 is notified from the radio base station 100 to the terminal 200 by a radio resource control (RRC) message.
  • RRC radio resource control
  • the measurement result may be channel state information (CSI) in addition to L1-RSRP.
  • CSI channel state information
  • FIG. 3 is a diagram illustrating a physical uplink control channel (PUCCH) group.
  • PUCCH physical uplink control channel
  • each of PCell and SCell belongs to the primary PUCCH group or the secondary PUCCH group.
  • SpCell belongs to the primary PUCCH group.
  • SCell belongs to the secondary PUCCH group.
  • PCell belongs to the primary PUCCH group, and SCell belongs to the secondary PUCCH group.
  • the PUCCH used to send quality information is set in SpCell.
  • PUCCH is set in one SCell.
  • An SCell in which PUCCH is set is called a PUCCH-SCell or a specific cell.
  • the quality information of SCell is transmitted by PUCCH of PUCCH-SCell. If there is an SCell with a physical uplink shared channel (PUSCH) set in the secondary PUCCH group, the quality information of the SCell is included in the information transmitted by PUSCH and transmitted to the wireless base station. May be done.
  • PUSCH physical uplink shared channel
  • the terminal 200 normally uses the PUCCH-SCell (not shown in FIG. 1) to transmit the quality information of the SCell to the wireless base station 100.
  • the terminal 200 uses cells other than the PUCCH-SCell to transmit the reception quality of a predetermined number of reference signals as the measurement result in the SCell.
  • the terminal 200 detects the beam failure in the SCell based on the reception quality of the reference signals RS1 to RS7.
  • the terminal 200 detects the occurrence of beam failure.
  • the terminal 200 may detect the occurrence of beam failure.
  • FIG. 4 is a functional block configuration diagram of the terminal 200.
  • the terminal 200 includes a transmission unit 210, a reception unit 220, a beam setting unit 230, a cell information holding unit 240, and a control unit 250.
  • the transmission unit 210 transmits an uplink signal using the uplink set in each of PCell and SCell. For example, the transmission unit 210 transmits the reception quality of the reference signal to the radio base station 100. The transmission unit 210 transmits information on cells other than PUCCH-SCell to the radio base station 100 when switching to a cell other than PUCCH-SCell is performed.
  • the receiving unit 220 transmits a downlink signal using the downlink set in each of PCell and SCell. For example, receiver 220 receives a reference signal used to detect beam obstruction. The receiving unit 220 receives a notification from the radio base station 100 instructing that the cell used for transmitting the reception quality of the reference signal be returned to the PUCCH-SCell.
  • the beam setting unit 230 establishes or reestablishes a beam pair between the radio base station 110 and the terminal 200 by referring to the TCI state included in the RRC message received by the receiving unit 220.
  • the control unit 250 switches the PUCCH-S Cell to a cell other than the PUCCH when a predetermined condition is satisfied.
  • the control unit 250 switches the cell used for transmitting the reception quality of the reference signal from the PUCCH-SCell to a cell other than the PUCCH-SCell.
  • the control unit 250 detects a beam failure in the SCell, the control unit 250 switches the cell used for transmitting the reception quality of the reference signal from the PUCCH-SCell to a cell other than the PUCCH-SCell.
  • the control unit 250 returns the cell used for transmitting the reception quality of the reference signal to the PUCCH-SCell when the recovery procedure of the beam failure in the SCell is completed.
  • the control unit 250 returns the cell used for transmitting the reception quality of the reference signal to the PUCCH-SCell based on the notification from the radio base station 100.
  • FIG. 5 is a diagram for explaining beam switching at the time of beam failure.
  • the terminal 200 uses a cell other than the PUCCH-SCell to transmit the reception quality of a predetermined number of reference signals to the radio base station 100 as a measurement result in the SCell.
  • the radio base station 100 determines whether or not a beam failure has occurred in the SCell based on the measurement result in the received SCell. When it is determined that the beam failure has occurred in the SCell, that is, when the beam failure is detected in the SCell, the radio base station 100 switches the beam in the SCell.
  • the radio base station 100 detects a beam failure in the SCell, the radio base station 100 is used for the beam pair currently established between the terminal 200 and the radio base station 110 in the SCell in which the beam failure occurs. Switch the existing beam to a new beam.
  • the radio base station 100 selects, for example, as a new beam, a beam used to transmit a reference signal having the highest reception quality among the reception qualities of a predetermined number of reference signals.
  • the radio base station 100 is used as a new beam to transmit the reference signal having the highest reception quality among the reception qualities of the reference signals transmitted from the terminal 200 in the past, excluding the beam in which the beam failure is detected.
  • the beam may be selected.
  • the radio base station 100 can establish a new beam pair between the terminal 200 and the radio base station 110 by using the new beam of the switching destination.
  • the radio base station 100 changes the transmission configuration indicator state (TCI state) in the layer 1 (L1) signal such as the RRC message, MAC CE, or physical downlink control channel (PDCCH), and changes the transmission configuration indicator state (TCI state) to the RRC message, MAC.
  • the terminal 200 is notified of the switch to the new beam by using the CE or L1 signal.
  • the TCI state is set in the RRC message.
  • the terminal 200 reestablishes a beam (beam pair) that communicates between the radio base station 110 and the terminal 200 by reading the TCI state setting in the RRC message, and the radio base station 110 and the terminal 200. Sends and receives wireless signals to and from.
  • a beam beam pair
  • FIG. 6 is a diagram showing an operation flow of the terminal 200 when the reception signal of the reference signal is transmitted. As shown in FIG. 6, the terminal 200 switches the cell used for transmitting the reception quality of the reference signal from the PUCCH-SCell to a cell other than the PUCCH-SCell (S11).
  • Examples of cells other than PUCCH-SCell include cells in the PUCCH group other than the PUCCH group to which SpCell and PUCCH-SCell belong.
  • the terminal 200 may select a cell other than PUCCH-SCell when transmission of the reception quality of the reference signal is performed using an aperiodic resource. For example, the terminal 200 selects a cell other than PUCCH-SCell when transmitting the reception quality of the reference signal by Aperiodic CSI report or Aperiodic L1-RSRP beam reporting.
  • FIG. 7 is a diagram illustrating an example of cell switching used for transmitting the reception quality of the reference signal.
  • the downlink control information (DCI) specifies the transmission resource of the quality information in the PUCCH-S Cell.
  • DCI downlink control information
  • the terminal 200 ignores the transmission resource of the quality information specified by DCI and the PUSCH resource in SpCell specified by DCI. Is used to transmit the reception quality of the reference signal.
  • the terminal 200 uses the selected cell to transmit the reception quality of a predetermined number of reference signals to the radio base station 100 as the measurement result in the SCell (S13).
  • the terminal 200 may switch the PUCCH-SCell when a beam failure is detected in the downlink of the PUCCH-SCell. Further, the terminal 200 may switch the PUCCH-SCell when a beam failure occurs between the PUCCH-SCell and the cell in which the Quasi-colocation (QCL) is set. In the cell where the QCL is set, substantially the same beam as the PUCCH SCell is used.
  • QCL Quasi-colocation
  • the terminal 200 may switch the PUCCH-SCell according to the state of the PUCCH-SCell. For example, in the terminal 200, when the PUCCH-SCell is in the deactivated state (SCell deactivate state), at least the PDCCH monitoring, reception processing, and decoding processing are not performed (permitted not to be performed) in the SCell. Alternatively, in the case of the state (SCell Dormant state) in which the requirements to be satisfied at the time of implementation are relaxed, the PUCCH-SCell is switched because part of the transmission / reception of the radio signal is not performed.
  • SCell deactivate state the deactivated state
  • the PUCCH-SCell is switched because part of the transmission / reception of the radio signal is not performed.
  • FIG. 8 is a diagram showing an operation flow of the terminal 200 at the time of a beam failure.
  • the terminal 200 detects a beam failure in the S Cell (S21).
  • the terminal 200 switches the cell used for transmitting the reception quality of the reference signal from the PUCCH-SCell to a cell other than the PUCCH-SCell (S23).
  • the terminal 200 When the terminal 200 switches the cell used to transmit the reception quality of the reference signal, the terminal 200 reports the switching destination cell to the radio base station 100 (S25).
  • the switching destination cell is reported using a physical random access channel (PRACH), PUCCH, PUSCH, or the like.
  • the switching destination cell may be reported by using a message requesting recovery of the beam failure in the S Cell.
  • the terminal 200 transmits the reception quality of the reference signal using the switching destination cell (S27).
  • the terminal 200 receives a change in the TCI state from the radio base station 100, it reads the TCI state setting, reestablishes a beam pair between the radio base station 110 and the terminal 200, and recovers from the beam failure ( S29).
  • the terminal 200 determines that the beam failure recovery procedure has been completed, the terminal 200 returns the cell used for transmitting the reception quality of the reference signal to the PUCCH-SCell (S31). That is, the terminal 200 returns the cell used for transmitting the reception quality of the reference signal to the PUCCH-SCell.
  • the terminal 200 may notify the radio base station 100 of the return of the PUCCH-S Cell. This notification is made using Physical Random Access Channel (PRACH), PUCCH, PUSCH, etc.
  • PRACH Physical Random Access Channel
  • PUCCH Physical Random Access Channel
  • PUSCH Physical Random Access Channel
  • the return of the PUCCH-S Cell may be performed based on the notification from the radio base station 100.
  • the terminal 200 may notify the radio base station 100 of the completion of restoration.
  • the terminal 200 sets a PUCCH-SCell other than the PUCCH to which the PUCCH used for transmitting the quality information of the SCell is set when a predetermined condition is satisfied. Switch to cell.
  • the terminal 200 can transmit the quality information of the SCell to the wireless base station 100 by using a cell other than the PUCCH-SCell.
  • the radio base station 100 can monitor the quality information in the SCell transmitted from the terminal and switch the beam when a beam failure in the SCell is detected. Therefore, even if a failure occurs in the PUCCH-SCell, the beam can be switched in the SCell.
  • the terminal 200 when the terminal 200 detects a beam failure in the SCell, the terminal 200 switches the PUCCH-SCell to a cell other than the PUCCH.
  • the terminal 200 can reliably report the occurrence of a beam failure to the radio base station 100.
  • the terminal 200 when the terminal 200 switches the PUCCH-SCell to a cell other than the PUCCH, the terminal 200 transmits information related to at least one of the PUCCH-SCell and the cell other than the PUCCH to the radio base station 100.
  • the radio base station 100 can recognize that the quality information of SCell is transmitted using a cell other than PUCCH. Therefore, the radio base station 100 can easily receive the reception quality of the reference signal from the terminal 200.
  • the terminal 200 switches cells other than PUCCH-SCell to PUCCCH-SCell when the recovery procedure of the beam failure in SCell is completed.
  • the terminal 200 can switch the cell used for transmitting the quality information of the SCell only when the beam failure is detected in the SCell. Therefore, the uplink transmission resource can be saved.
  • the terminal 200 switches cells other than PUCCH-SCell to PUCCCH-SCell based on the notification from the radio base station 100.
  • the terminal 200 can save uplink transmission resources.
  • the block configuration diagram (FIG. 4) used in the description of the above-described embodiment shows a block of functional units.
  • These functional blocks are realized by any combination of at least one of hardware and software.
  • the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically connected, or two or more physically or logically separated devices that are 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, deemed, and notification (There are, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. ..
  • a functional block that makes transmission function is called a transmitting unit or a transmitter.
  • the method of realizing each is not particularly limited.
  • FIG. 9 is a diagram showing an example of the hardware configuration of the terminal.
  • the terminal may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the device 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.
  • Each functional block of the device is realized by any hardware element of the computer device or a combination of the hardware elements.
  • the processor 1001 performs the calculation, controls the communication by the communication device 1004, and the memory. It is realized by controlling at least one of reading and writing of data in 1002 and storage 1003.
  • Processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be composed of 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
  • the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
  • a program program code
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001.
  • Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one such as ReadOnlyMemory (ROM), ErasableProgrammableROM (EPROM), Electrically ErasableProgrammableROM (EEPROM), and RandomAccessMemory (RAM). May be done.
  • the memory 1002 may be called a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, or the like that can execute the method according to the embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
  • Storage 1003 may be referred to as auxiliary storage.
  • the recording medium described above may be, for example, a database, server or other suitable medium containing at least one of the memory 1002 and the storage 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.
  • 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 input device 1005 is an input device (for example, 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 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 memory 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 device includes hardware such as a microprocessor, a digital signal processor (Digital Signal Processor: DSP), ApplicationSpecific IntegratedCircuit (ASIC), ProgrammableLogicDevice (PLD), and FieldProgrammableGateArray (FPGA).
  • the hardware may implement some or all of each functional block.
  • processor 1001 may be implemented using at least one of these hardware.
  • information notification includes physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), upper layer signaling (eg, RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block) (MIB), System Information Block (SIB)), other signals or combinations thereof.
  • RRC signaling may also be referred to as an RRC message, for example, RRC Connection Setup. ) Message, RRC Connection Reconfiguration message, etc. may be used.
  • LTE LongTermEvolution
  • LTE-A LTE-Advanced
  • SUPER3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • FutureRadioAccess FAA
  • NewRadio NR
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB UltraMobile Broadband
  • IEEE802.11 Wi-Fi (registered trademark)
  • IEEE802.16 WiMAX®
  • IEEE802.20 Ultra-WideBand (UWB), Bluetooth®, and other systems that utilize appropriate systems and at least one of the next generation systems extended based on them.
  • 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 in the present disclosure may be performed by its upper node (upper node).
  • various operations performed for communication with the terminal are performed by the base station and other network nodes other than the base station (for example, MME or). It is clear that it can be done by at least one of (but not limited to, S-GW, etc.).
  • S-GW network nodes
  • the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information and signals 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 may be stored in a specific location (for example, memory) or may be managed using a management table.
  • the input / output information can be overwritten, updated, or added.
  • the output information may be deleted.
  • the input information may be transmitted to another device.
  • the determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
  • 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.
  • Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.
  • 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, twist pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twist pair, Digital Subscriber Line (DSL), 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) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
  • 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 BS
  • Wireless Base Station Wireless Base Station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (for example, three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio)). Communication services can also be provided by Head: RRH).
  • a base station subsystem eg, a small indoor base station (Remote Radio)
  • Communication services can also be provided by Head: RRH).
  • cell refers to a base station that provides communication services in this coverage, and part or all of the coverage area of at least one of the base station subsystems.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • Mobile stations can be 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, depending on the trader. 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, the 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 Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a mobile station (user terminal, the same applies hereinafter).
  • communication between a base station and a mobile station has been replaced with communication between a plurality of mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the mobile station may have the function of the base station.
  • words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
  • the uplink, downlink, and the like may be read as side channels.
  • the mobile station in the present disclosure may be read as a base station.
  • the base station may have the functions of the mobile station.
  • 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.
  • Electromagnetic energies with wavelengths in the microwave and light (both visible and invisible) regions can be considered to be “connected” or “coupled” to each other.
  • the reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot (Pilot) depending on the applicable standard.
  • RS Reference Signal
  • Pilot pilot
  • references to elements using designations such as “first”, “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. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.
  • 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 beam can be switched in the secondary cell even when a failure occurs in a specific cell used for reporting quality information.
  • Wireless communication system 100 radio base stations 110 radio base station 200 terminals 210 transmitter 220 Receiver 230 beam setting 240 cell information holder 250 control unit 1001 processor 1002 memory 1003 storage 1004 communication device 1005 input device 1006 output device 1007 bus

Landscapes

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

Abstract

Selon le présente invention, un terminal (200) règle simultanément une cellule primaire (PCell) et une cellule secondaire (SCell). Le terminal (200) est pourvu : d'une unité de commande (270) qui, si une condition prédéterminée est satisfaite, commute une PUCCH-SCell dans laquelle un PUCCH destiné à être utilisé dans la transmission d'informations de qualité de SCell est réglé, en une cellule autre que la PUCCH-SCell ; et une unité de transmission (210) qui transmet les informations de qualité à l'aide d'une cellule autre que la PUCCH-SCell.
PCT/JP2019/024842 2019-06-21 2019-06-21 Terminal WO2020255420A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/024842 WO2020255420A1 (fr) 2019-06-21 2019-06-21 Terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/024842 WO2020255420A1 (fr) 2019-06-21 2019-06-21 Terminal

Publications (1)

Publication Number Publication Date
WO2020255420A1 true WO2020255420A1 (fr) 2020-12-24

Family

ID=74037623

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/024842 WO2020255420A1 (fr) 2019-06-21 2019-06-21 Terminal

Country Status (1)

Country Link
WO (1) WO2020255420A1 (fr)

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
INTEL CORPORATION: "On SCell Beam Failure Recovery", 3GPP TSG RAN WG1 #94 R1-1808720, 24 August 2018 (2018-08-24), XP051516094, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_94/Docs/R1-1808720.zip> [retrieved on 20190716] *
NTT DOCOMO; INC: "Discussion on multi-beam enhancement", 3GPP TSG RAN WG1 #94B R1-1811349, 12 October 2018 (2018-10-12), XP051518752, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_94b/Docs/R1-1811349.zip> [retrieved on 20190716] *

Similar Documents

Publication Publication Date Title
CN114009087B (zh) 终端
WO2020217539A1 (fr) Dispositif utilisateur
US20220123878A1 (en) User equipment
WO2022070365A1 (fr) Terminal et procédé de communication sans fil
US11870536B2 (en) Terminal
CN114009092B (zh) 终端
JP7361114B2 (ja) 端末
CA3087617C (fr) Equipement d&#39;utilisateur
WO2020174549A1 (fr) Dispositif d&#39;utilisateur et procédé de communication
AU2019429334A1 (en) User device and base station device
CN114009085B (zh) 终端
WO2021161489A1 (fr) Terminal, station de base et procédé de communication
WO2021029075A1 (fr) Terminal et procédé de communication
WO2021019742A1 (fr) Terminal et procédé de communication
US20220329380A1 (en) Terminal
WO2020255420A1 (fr) Terminal
JPWO2020170404A1 (ja) ユーザ装置
WO2020084745A1 (fr) Équipement utilisateur
WO2021019735A1 (fr) Terminal et nœud de communication
WO2020165957A1 (fr) Dispositif de communication

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: 19933766

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19933766

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP