WO2020003367A1 - Dispositif d'utilisateur et appareil de station de base - Google Patents

Dispositif d'utilisateur et appareil de station de base Download PDF

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Publication number
WO2020003367A1
WO2020003367A1 PCT/JP2018/024103 JP2018024103W WO2020003367A1 WO 2020003367 A1 WO2020003367 A1 WO 2020003367A1 JP 2018024103 W JP2018024103 W JP 2018024103W WO 2020003367 A1 WO2020003367 A1 WO 2020003367A1
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WO
WIPO (PCT)
Prior art keywords
user device
user
beamforming
information indicating
base station
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PCT/JP2018/024103
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English (en)
Japanese (ja)
Inventor
良介 大澤
佑一 柿島
和晃 武田
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
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Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to PCT/JP2018/024103 priority Critical patent/WO2020003367A1/fr
Priority to JP2020526745A priority patent/JP7105883B2/ja
Publication of WO2020003367A1 publication Critical patent/WO2020003367A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Definitions

  • the present invention relates to a user apparatus and a base station apparatus in a wireless communication system.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Advanced
  • NR New Radio
  • D2D reduces traffic between a user apparatus and a base station apparatus, and enables communication between user apparatuses even when the base station apparatus becomes unable to communicate at the time of disaster or the like.
  • D2D is referred to as a "sidelink", but in this specification, a more general term D2D is used. However, in the description of the embodiment described later, a side link is also used as needed.
  • D2D is D2D discovery (D2D @ discovery, also referred to as D2D discovery) for discovering another communicable user device, and D2D communication (D2D @ direct @ communication, D2D communication, terminal-to-terminal communication) for direct communication between user devices. Direct communication etc.).
  • D2D communication, D2D discovery, and the like are simply referred to as D2D unless otherwise distinguished.
  • a signal transmitted and received in D2D is called a D2D signal.
  • Various use cases of services related to V2X (Vehicle to Everything) in 5G are being studied (for example, Non-Patent Document 2).
  • Non-Patent Document 3 In D2D with NR, it is assumed that a wide frequency range from a low frequency band similar to LTE to a higher frequency band (millimeter wave band) than LTE is used. In particular, since propagation loss increases in a high frequency band, application of beam forming with a narrow beam width is being studied to compensate for the propagation loss (for example, Non-Patent Document 3).
  • 3GPP TS 36.211 V15.1.0 (2018-03) 3GPP TR 22.886 V15.1.0 (2017-03) 3GPP TS 38.2111.0V15.1.0 (2018-03)
  • the receiving apparatus matches the receiving beamforming to the transmitting beam, and the transmitting apparatus specifies the receiving beamforming to the receiving apparatus. Alternatively, it has not been assumed that the receiving apparatus determines reception beamforming first.
  • the present invention has been made in view of the above points, and has as its object to appropriately control beamforming in wireless communication in which beamforming is applied to both transmission and reception.
  • a transmission unit that transmits a plurality of different beams to which another spatial device that is a candidate to be applied to receive beamforming is applied to another user device, and the plurality of different beams from the other user device.
  • a user apparatus comprising: a control unit that acquires information indicating a measurement result of the above, and a receiving unit that determines reception beamforming based on the information indicating the measurement result and receives a beam transmitted from the other user apparatus.
  • beamforming can be appropriately controlled in wireless communication in which beamforming is applied to both transmission and reception.
  • FIG. 5 is a flowchart for explaining an operation related to beam determination according to the embodiment of the present invention.
  • FIG. 5 is a diagram for explaining an operation (1) related to beam determination in the embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a base station device 10 according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a user device 20 according to the embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station device 10 or a user device 20 according to an embodiment of the present invention.
  • LTE Long Term Evolution
  • NR Universal Terrestrial Radio Access
  • LAN Local Area Network
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or any other method (for example, Flexible Duplex). May be used.
  • a method of transmitting a signal using a transmission beam may be digital beamforming for transmitting a signal multiplied by a precoding vector (precoded with a precoding vector), Analog beamforming that realizes beamforming using a variable phase shifter in an RF (Radio Frequency) circuit may be used.
  • the method of receiving a signal using a reception beam may be digital beamforming that multiplies a received signal by a predetermined weight vector, or realizes beamforming using a variable phase shifter in an RF circuit.
  • Analog beam forming. Hybrid beamforming combining digital beamforming and analog beamforming may be applied.
  • transmitting a signal using a transmission beam may be transmitting a signal at a specific antenna port.
  • receiving a signal using a receive beam may be receiving a signal at a particular antenna port.
  • An antenna port refers to a logical antenna port or a physical antenna port defined in the 3GPP standard.
  • the method of forming the transmission beam and the reception beam is not limited to the above method.
  • a method of changing the angle of each antenna may be used, or a method of combining a method using a precoding vector and a method of changing the angle of the antenna may be used.
  • a different antenna panel may be used by switching, a method of combining a plurality of antenna panels may be used, or another method may be used.
  • a plurality of different transmission beams may be used in a high frequency band. The use of multiple transmission beams is referred to as multi-beam operation, and the use of one transmission beam is referred to as single beam operation.
  • “setting” of a wireless parameter or the like may mean that a predetermined value is set (Pre-configured) in advance, or that the base station apparatus 10 or the user apparatus The wireless parameter notified from 20 may be set.
  • FIG. 1 is a diagram for explaining V2X.
  • V2X Vehicle to Everything
  • eV2X enhanced V2X
  • FIG. 1 V2X is a part of ITS (Intelligent Transport Systems) and means V2V (Vehicle to Vehicle), which means a form of communication performed between vehicles, and a roadside installed on the side of a vehicle and a vehicle.
  • V2I Vehicle-to-Infrastructure
  • RSU Rad-Side Unit
  • V2N Vehicle-to-infrastructure
  • V2P Vehicle to Pedestrian meaning a form of communication between a car and a mobile terminal carried by a pedestrian.
  • the communication device may be a terminal held by a person, the communication device may be a device mounted on a drone or an aircraft, or the communication device may be a base station, an RSU, a relay station, or the like. Good.
  • Mode 3 and Mode 4 are defined for resource allocation for V2X communication to the user device 20.
  • transmission resources are dynamically allocated by DCI (Downlink ⁇ Control ⁇ Information) transmitted from the base station apparatus 10 to the user apparatus 20.
  • DCI Downlink ⁇ Control ⁇ Information
  • SPS Semi ⁇ Persistent ⁇ Scheduling
  • Mode 4 the user device 20 autonomously selects a transmission resource from the resource pool.
  • 3GPP is studying V2X using LTE or NR cellular communication and terminal-to-terminal communication. It is assumed that studies on L2 or NR V2X not limited to the 3GPP specifications will be made in the future. For example, ensuring interoperability, increasing cost efficiency by implementing higher layers, using or switching multiple RATs (Radio Access Technology), supporting regulations in each country, acquiring data from LTE or NR V2X platforms, distributing, and managing databases It is assumed that the usage method will be considered.
  • RATs Radio Access Technology
  • FR2 Frequency Range 2
  • the beam may be applied to the side link communication.
  • 3GPP Rel-15 DL / UL (Downlink / Uplink) transmission beam scanning (beam sweeping) of the base station apparatus 10 using CSI-RS (Channel State Information-Reference Signal) or SSB (Synchronization Signal Block) is supported. ing.
  • the base station device 10 can determine a suitable DL transmission beam based on the CSI report received from the user device 20.
  • the base station apparatus 10 notifies the user apparatus 20 of a downlink transmission beam by TCI (Transmission Configuration Indication).
  • TCI Transmission Configuration Indication
  • ⁇ 3GPP ⁇ Rel-15 DL / UL supports transmission beam scanning of the user apparatus 20 using SRS (Sounding Reference Signal).
  • the base station apparatus 10 can determine a suitable UL transmission beam based on the SRS reception quality.
  • the SRS reception quality is represented by, for example, RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), SINR (Signal-to-Interference-plus-Noise Ratio), and the like.
  • the base station device 10 specifies an uplink transmission beam to the user device 20 using SRI (SRS @ resource @ indicator).
  • WiGig registered trademark
  • WiGigabit WiGig
  • the transmission beam is determined prior to the reception beam forming, and the operation of matching the reception beam forming to the transmission beam is premised.
  • there is a method for performing the beamforming there is no method for specifying the reception beamforming.
  • CSI reporting may not be supported in side link communication due to overhead reduction. If CSI reporting is not supported, the transmit beam is determined without feedback from the device receiving the beam. Therefore, it is impossible to perform transmission beamforming in consideration of reception beamforming in an apparatus that receives a beam.
  • FIG. 2 is a flowchart for explaining an operation related to beam determination in the embodiment of the present invention.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • Beam matching is also referred to as “Tx / Rx beam correlation”, and UEs capable of “beam matching” are assumed to satisfy at least one of the following conditions 1) and 2).
  • the following 1) and 2) are conditions when the device A and the device B perform communication, and correspond to a UE in which the device A can perform “beam matching”.
  • the device A or the device B may be the user device 20 or the base station device 10.
  • 1) Apparatus A can determine a transmission beam to be transmitted to apparatus B based on a measurement result of a signal received from apparatus B by applying one or a plurality of apparatus A-side reception beamforming.
  • the device A can determine the reception beamforming for receiving the signal from the device B based on the notification from the device B including the measurement result of one or a plurality of device A-side transmission beams.
  • step S1 the user apparatus 20B transmits one or a plurality of signals to which candidates for a spatial filter used for reception beamforming have been applied.
  • FIG. 3 is a diagram for explaining the operation (1) related to the beam determination according to the embodiment of the present invention.
  • the user apparatus 20B transmits, for example, three transmission beams # 0, # 1, and # 2 to which the candidates for the spatial filter used for the reception beamforming are applied to the user apparatus 20A.
  • the beam to which the candidate of the spatial filter used for the reception beamforming transmitted from the user apparatus 20B is applied for example, SLSS (Sidelink Synchronization Signal), PSDCH (Physical Sidelink Discovery Channel), DMRS (Demodulation Reference Signal), SRS (Sounding)
  • SLSS Systemlink Synchronization Signal
  • PSDCH Physical Sidelink Discovery Channel
  • DMRS Demodulation Reference Signal
  • SRS Sounding
  • One or more are transmitted as Reference @ Signal or PRACH (Physical @ Random @ Access @ Channel).
  • the resources specified in the time domain or the frequency domain may be changed for each beam. Further, a sequence used for signal generation may be changed for each beam, and beams may be distinguished based on a difference in the sequence. Further, the port number may be changed for each beam. An index may be assigned to a port number at which a resource, a sequence, or a beam specified in the time domain or the frequency domain is transmitted.
  • the plurality of beams transmitted from the user device 20B may be transmitted regardless of the presence or absence of communication with the user device 20A.
  • the plurality of beams transmitted from the user device 20B may be transmitted periodically.
  • the transmission cycle or duration may be set by the base station device 10 in the user device 20B via, for example, RRC (Radio Resource Control) signaling, PBCH (Physical Broadcast Channel), or the like, or may be specified in advance in the specification. Good.
  • the plurality of beams transmitted from the user device 20B may be addressed to the user devices 20 other than the user device 20A, may be addressed to the base station device 10, or may be broadcast.
  • the plurality of beams transmitted from the user device 20B may be triggered by a notification from the user device 20A or the base station device 10.
  • step S2 the user device 20A selects a beam having a favorable reception quality from the beams transmitted from the user device 20B.
  • FIG. 4 is a diagram for explaining the operation (2) relating to the beam determination in the embodiment of the present invention.
  • the beam # 1 having the preferable reception quality is selected from the beams # 0, # 1, and # 2 transmitted from the user apparatus 20B.
  • the reception quality for example, any one of RSRP, RSRQ, RSSI (Received Signal (StrengthSIIndication), and SINR or a combination having a good SINR may be selected.
  • the reception beamforming may not be applied in the user apparatus 20A.
  • the transmitting beam and the receiving beam forming of the user apparatus 20A are determined, when the user apparatus 20A receives the beam transmitted from the user apparatus 20B, the receiving apparatus performs the receiving beam scanning and determines a suitable receiving beam forming. Is also good.
  • the user apparatus 20A Since the user apparatus 20A is a UE capable of “beam matching”, the user apparatus 20A transmits the beam # 1 transmitted from the user apparatus 20B based on the reception beamforming that has been able to preferably receive the beam # 1.
  • the beam can be determined.
  • the user device 20A notifies the user device 20B of information designating reception beamforming of the user device 20B.
  • the designation of the reception beamforming may be designated by information for designating the resource used at the time of beam transmission in step S1. That is, an index assigned to a resource, a sequence specified in the time domain or the frequency domain of the beam transmitted from the user apparatus 20B, or the port number at which the beam was transmitted may be notified from the user apparatus 20A to the user apparatus 20B. .
  • the types of reference signals such as SLSS and DMRS may be notified.
  • the designation of the reception beamforming may be performed in any layer of SCI (Sidelink Control Information), MAC (Medium Access Control) signaling, or RRC (Radio Resource Control) signaling by PHY (Physical layer) signaling.
  • the user device 20A When determining the transmission beam of the user device 20A based on the transmission beam from the user device 20B, the user device 20A receives the user device 20B on a signal transmitted from the user device 20A, for example, on a PSCCH, PSSCH or PSBCH.
  • a pair of a transmission beam in the user apparatus 20A and a reception beamforming in the user apparatus 20B may be implicitly notified to the user apparatus 20B.
  • the user apparatus 20B may instruct or assume that the user apparatus 20A applies reception beamforming corresponding to the transmission beam of the user apparatus 20A notified of the pair at the time of reception.
  • step S4 the user device 20B determines reception beamforming based on the information indicating the beam notified from the user device 20A in step S3, and ends the flow.
  • the user device 20B may not use the reception beamforming notified from the user device 20A in step S3.
  • the user apparatus 20B may notify the user apparatus 20A of 1-bit information indicating that the notified reception beamforming is not used,
  • the information indicating the use of the alternative reception beamforming or information indicating the alternative reception beamforming such as a beam index may be notified to the user apparatus 20A.
  • the user device 20A may simultaneously designate a plurality of reception beamformings to the user device 20B.
  • the user device 20A may perform spatial multiplexing using a plurality of transmission beams corresponding to the plurality of reception beamformings.
  • the user device 20B may regard the designated number of reception beamforming as a rank, or may be notified of RI (Rank @ Indicator).
  • the method of determining the reception beam forming or the transmission beam described in steps S1 to S4 of FIG. 2 is not limited to application to side link communication, and may be applied to DL and UL. That is, PSCCH (Physical Downlink Control Channel), PUCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PSCCH, PSSCH, PSBCH or SLSS used in the above-described reception beamforming or transmission beam determination method. It may be replaced with PUSCH (Physical Uplink Shared Channel), PBCH (Physical Broadcast Channel) or SS (Synchronization Signal).
  • the user device 20A or the user device 20B described in steps S1 to S4 of FIG. 2 may be replaced with the base station device 10, the RSU, the relay station, or the like.
  • the method of determining the reception beam forming or the transmission beam described in steps S1 to S4 of FIG. 2 is based on the premise that both the user apparatus 20A and the user apparatus 20B are UEs capable of “beam matching”.
  • the user apparatus 20A may randomly specify the reception beamforming to the user apparatus 20B, or the user apparatus 20B may randomly determine the reception beamforming. You may.
  • the reception beamforming of the user apparatus 20B is applied at random, for example, in a repeated transmission or the like, a diversity gain can be obtained.
  • the user apparatus 20 can determine a suitable reception beamforming from a plurality of reception beamforming candidates. Further, the user device 20 can determine a transmission beam corresponding to the reception beamforming after determining a suitable reception beamforming first. Further, the user apparatus 20 can determine a suitable transmission beam by determining reception beamforming suitable for the received beam.
  • the base station device 10 and the user device 20 include a function for implementing the above-described embodiment. However, each of the base station device 10 and the user device 20 may include only some of the functions in the embodiment.
  • FIG. 5 is a diagram illustrating an example of a functional configuration of the base station device 10.
  • base station apparatus 10 includes transmitting section 110, receiving section 120, setting section 130, and control section 140.
  • the functional configuration shown in FIG. 5 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the names of the functional divisions and the functional units may be any.
  • the transmission unit 110 has a function of generating a signal to be transmitted to the user device 20 and transmitting the signal wirelessly.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the user device 20 and acquiring, for example, information of a higher layer from the received signals.
  • transmitting section 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signal, and the like to user apparatus 20. Further, for example, the transmitting unit 110 transmits information indicating that another terminal is approaching the user device 20, and the receiving unit 120 receives terminal information from the user device 20.
  • the setting unit 130 stores in the storage device the setting information set in advance and various setting information to be transmitted to the user device 20, and reads out the setting information from the storage device as needed.
  • the content of the setting information is, for example, information related to transmission / reception parameters of D2D communication.
  • control unit 140 performs the process related to the setting for the user device 20 to perform the D2D communication. Further, the control unit 140 performs a process of notifying the user device 20 of information relating to the setting of wireless communication.
  • a function unit related to signal transmission in control unit 140 may be included in transmission unit 110, and a function unit related to signal reception in control unit 140 may be included in reception unit 120.
  • FIG. 6 is a diagram illustrating an example of a functional configuration of the user device 20.
  • the user device 20 includes a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in FIG. 6 is only an example.
  • the names of the functional divisions and the functional units may be any as long as the operation according to the embodiment of the present invention can be performed.
  • the transmission unit 210 creates a transmission signal from transmission data, and transmits the transmission signal wirelessly.
  • the receiving unit 220 wirelessly receives various signals, and obtains a higher layer signal from the received physical layer signal.
  • the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, a DL / UL / SL control signal, and the like transmitted from the base station device 10.
  • the transmitting unit 210 transmits the PSCCH (Physical Sidelink Shared Channel), the PSSCH (Physical Sidelink Shared Channel), the PSDCH (Physical Sidelink Discovery Channel), and the PSBCH (Physical Sidelink Broadcast Channel) to other user devices 20 as D2D communication. )
  • the receiving unit 120 receives a PSCCH, a PSSCH, a PSDCH, a PSBCH, or the like from another user apparatus 20.
  • the setting unit 230 stores various setting information received from the base station device 10 or the user device 20 by the receiving unit 220 in a storage device, and reads out the setting information from the storage device as needed.
  • the setting unit 230 also stores preset setting information.
  • the content of the setting information is, for example, information related to transmission / reception parameters of D2D communication.
  • the control unit 240 controls the D2D communication performed with another user device 20 as described in the embodiment.
  • the control unit 240 determines a corresponding transmission beam based on the received beam. Further, the control unit 240 receives information related to wireless communication from the base station device 10, controls wireless communication of the user device 20 based on the information, and reports necessary information to the base station device 10.
  • a function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and a function unit related to signal reception in the control unit 240 may be included in the reception unit 220.
  • each functional block may be realized by one device in which a plurality of elements are physically and / or logically combined, or two or more devices physically and / or logically separated from each other directly and directly. And / or indirectly (for example, wired and / or wireless), and may be implemented by these multiple devices.
  • both the base station device 10 and the user device 20 according to an embodiment of the present invention may function as a computer that performs processing according to the embodiment of the present invention.
  • FIG. 7 is a diagram illustrating an example of a hardware configuration of the wireless communication device that is the base station device 10 or the user device 20 according to the embodiment of the present invention.
  • Each of the above-described base station apparatus 10 and user apparatus 20 is physically a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. It may be configured.
  • the term “apparatus” can be read as a circuit, a device, a unit, or the like.
  • the hardware configuration of the base station device 10 and the user device 20 may be configured to include one or more devices indicated by 1001 to 1006 illustrated in the drawing, or may be configured without including some devices. May be done.
  • the functions of the base station device 10 and the user device 20 are performed by reading predetermined software (program) on hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs an arithmetic operation. This is realized by controlling reading and / or writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 controls the entire computer by operating an operating system, for example.
  • the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.
  • CPU Central Processing Unit
  • the processor 1001 reads out a program (program code), a software module, or data from the auxiliary storage device 1003 and / or the communication device 1004 to the storage device 1002, and executes various processes according to these.
  • a program program that causes a computer to execute at least a part of the operation described in the above embodiment is used.
  • the transmission unit 110, the reception unit 120, the setting unit 130, and the control unit 140 of the base station device 10 illustrated in FIG. 5 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • Processor 1001 may be implemented with one or more chips. Note that the program may be transmitted from a network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium and is, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). It may be configured.
  • the storage device 1002 may be called a register, a cache, a main memory (main storage device), or the like.
  • the storage device 1002 can store a program (program code), a software module, and the like that can be executed to execute the processing according to an embodiment of the present invention.
  • the auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, Blu -Ray (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, or the like.
  • the auxiliary storage device 1003 may be called an auxiliary storage device.
  • the storage medium described above may be, for example, a database including the storage device 1002 and / or the auxiliary storage device 1003, a server, or any other suitable medium.
  • the communication device 1004 is hardware (transmitting / receiving device) for performing communication between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, and the like.
  • the transmitting unit 110 and the receiving unit 120 of the base station device 10 may be realized by the communication device 1004.
  • the transmission unit 210 and the reception unit 220 of the user device 20 may be realized by the communication device 1004.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an external input.
  • the output device 1006 is an output device that performs output to the outside (for example, a display, a speaker, an LED lamp, and the like). Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • the devices such as the processor 1001 and the storage device 1002 are connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured by a single bus, or may be configured by a different bus between devices.
  • the base station device 10 and the user device 20 are respectively a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. , And some or all of the functional blocks may be realized by the hardware.
  • the processor 1001 may be implemented by at least one of these hardware.
  • a transmitting unit that transmits, to another user apparatus, a plurality of mutually different beams to which a spatial filter that is a candidate to be applied to receive beamforming is applied,
  • a control unit that acquires information indicating measurement results of the plurality of different beams from the user device, and determines reception beamforming based on the information indicating the measurement result, and transmits a beam transmitted from the other user device.
  • a receiving unit for receiving the user equipment.
  • the user device 20 can determine a suitable reception beamforming from a plurality of reception beamforming candidates and improve communication quality. That is, in wireless communication that applies beamforming for both transmission and reception, it is possible to appropriately control beamforming.
  • the transmitting unit transmits the resource specified in the time domain or the frequency domain by switching for each beam, or transmits and switches the signal generation sequence for each beam, or transmits by switching the port number for each beam Is also good.
  • the user apparatus 20 can determine a suitable reception beamforming from a plurality of reception beamforming candidates.
  • the transmitting unit may periodically transmit or broadcast the plurality of different beams to another user device.
  • the user device 20 can periodically trigger an operation of determining a suitable reception beamforming from a plurality of reception beamforming candidates.
  • the information indicating the measurement result is information indicating one of the plurality of different beams, an index corresponding to a resource specified in a time domain or a frequency domain, an index corresponding to a signal generation sequence, or a beam. It may include the transmitted port number.
  • the user apparatus 20 can determine a suitable reception beamforming from a plurality of reception beamforming candidates.
  • the information indicating the measurement result is information indicating a plurality of beams selected from the plurality of different beams, and a beam transmitted from the other user apparatus as a rank based on the number of the selected plurality of beams. May be received.
  • the user apparatus 20 can determine reception beamforming using a plurality of beams from a plurality of reception beamforming candidates, and perform communication by suitable spatial multiplexing.
  • a receiving unit that receives, from a user apparatus, a plurality of different beams to which a spatial filter that is a candidate to be applied to receive beamforming is applied, and the plurality of different beams is provided to the user apparatus.
  • a base station apparatus including a control unit that transmits information indicating a measurement result of a beam, and a transmission unit that determines transmission beamforming based on the information indicating the measurement result and transmits a beam to the user apparatus is provided.
  • the base station apparatus 10 can determine a suitable reception beamforming from the plurality of reception beamforming candidates of the user apparatus 20, and improve communication quality. That is, in wireless communication that applies beamforming for both transmission and reception, it is possible to appropriately control beamforming.
  • the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components. In the processing procedure described in the embodiment, the order of the processing may be changed as long as there is no contradiction.
  • the base station device 10 and the user device 20 have been described using a functional block diagram for convenience of processing description, such a device may be realized by hardware, software, or a combination thereof.
  • the software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the user apparatus 20 according to the embodiment of the present invention are respectively a random access memory (RAM), a flash memory, and a read memory.
  • the data may be stored in a dedicated 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 aspect / embodiment described in this specification, and may be performed by another method.
  • the notification of information includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof, and RRC signaling may be called an RRC message, for example, RRC message.
  • a connection setup (RRC (Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like may be used.
  • Each aspect / embodiment described in this specification includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • SUPER 3G IMT-Advanced
  • 4G 5G
  • FRA Full Radio Access
  • W-CDMA Wideband
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • IEEE 802.16 WiMAX
  • IEEE 802.20 UWB (Ultra-WideBand
  • the present invention may be applied to a system using Bluetooth (registered trademark), another appropriate system, and / or a next-generation system extended based on the system.
  • the specific operation described as being performed by the base station apparatus 10 in this specification may be performed by an upper node (upper @ node) in some cases.
  • an upper node upper @ node
  • various operations performed for communication with the user device 20 are different from the base station device 10 and / or the base station device 10. It should be clear that this can be done by other network nodes (for example, but not limited to MME or S-GW etc.).
  • MME Mobility Management Entity
  • the user equipment 20 may be provided by one of ordinary skill in the art to 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, It may also be called a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.
  • Base station device 10 may also be referred to by those skilled in the art as NB (NodeB), eNB (evolved NodeB), gNB, Base Station (Base Station), or some other suitable terminology.
  • NB NodeB
  • eNB evolved NodeB
  • gNB Base Station
  • Base Station Base Station
  • determining may encompass a wide variety of actions.
  • the “judgment” and “decision” are, for example, judgment (judging), calculation (computing), processing (processing), deriving (investigating), investigating (looking up) (for example, table , A search in a database or another data structure), ascertaining a thing as “determining", “determining", and the like.
  • “determining” and “determining” include receiving (eg, receiving information), transmitting (eg, transmitting information), input (input), output (output), and accessing. (Accessing) (for example, accessing data in a memory) may be regarded as “determined” or “determined”.
  • judgment and “decision” mean that resolving, selecting, selecting, establishing, establishing, comparing, etc. are regarded as “judgment” and “determined”. May be included. That is, “judgment” and “decision” may include deeming any operation as “judgment” and “determined”.
  • control unit 240 is an example of a detection unit or a control unit.
  • the transmission unit 210 or the reception unit 220 is an example of a communication unit.

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

Abstract

Un dispositif d'utilisateur comprend une unité d'émission permettant d'émettre, vers un autre dispositif d'utilisateur, une pluralité de faisceaux différents les uns des autres auxquels est appliqué un filtre spatial, qui est un candidat pour être appliqué dans la formation de faisceau de réception ; une unité de commande permettant d'acquérir des informations indiquant un résultat de mesure des faisceaux différents les uns des autres à partir de l'autre dispositif d'utilisateur ; et une unité de réception permettant de déterminer la formation de faisceau de réception sur la base des informations indiquant le résultat de mesure et de recevoir un faisceau transmis depuis l'autre dispositif d'utilisateur.
PCT/JP2018/024103 2018-06-26 2018-06-26 Dispositif d'utilisateur et appareil de station de base WO2020003367A1 (fr)

Priority Applications (2)

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PCT/JP2018/024103 WO2020003367A1 (fr) 2018-06-26 2018-06-26 Dispositif d'utilisateur et appareil de station de base
JP2020526745A JP7105883B2 (ja) 2018-06-26 2018-06-26 端末及び基地局

Applications Claiming Priority (1)

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PCT/JP2018/024103 WO2020003367A1 (fr) 2018-06-26 2018-06-26 Dispositif d'utilisateur et appareil de station de base

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015125891A1 (fr) * 2014-02-21 2015-08-27 株式会社Ｎｔｔドコモ Procédé de commande de communications radio et système de communications radio
WO2016013608A1 (fr) * 2014-07-25 2016-01-28 株式会社Ｎｔｔドコモ Station de radiotransmission et réseau de radiocommunication
WO2018105397A1 (fr) * 2016-12-05 2018-06-14 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ Procédé et dispositif de communication sans fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015125891A1 (fr) * 2014-02-21 2015-08-27 株式会社Ｎｔｔドコモ Procédé de commande de communications radio et système de communications radio
WO2016013608A1 (fr) * 2014-07-25 2016-01-28 株式会社Ｎｔｔドコモ Station de radiotransmission et réseau de radiocommunication
WO2018105397A1 (fr) * 2016-12-05 2018-06-14 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ Procédé et dispositif de communication sans fil

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JPWO2020003367A1 (ja) 2021-08-02

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