WO2020090095A1 - Équipement utilisateur - Google Patents

Équipement utilisateur Download PDF

Info

Publication number
WO2020090095A1
WO2020090095A1 PCT/JP2018/040770 JP2018040770W WO2020090095A1 WO 2020090095 A1 WO2020090095 A1 WO 2020090095A1 JP 2018040770 W JP2018040770 W JP 2018040770W WO 2020090095 A1 WO2020090095 A1 WO 2020090095A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
user equipment
signal
information
user
Prior art date
Application number
PCT/JP2018/040770
Other languages
English (en)
Japanese (ja)
Inventor
徹 内野
天楊 閔
一樹 武田
高橋　秀明
リフェ ワン
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/JP2018/040770 priority Critical patent/WO2020090095A1/fr
Publication of WO2020090095A1 publication Critical patent/WO2020090095A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present invention relates to a user device in a wireless communication system.
  • LTE Long Term Evolution
  • 3GPP in order to realize further increase in system capacity from LTE, further increase in data transmission rate, and further reduction in delay in the wireless section, study and specification of a wireless communication method called 5G. Is progressing.
  • 5G various techniques are being studied in order to satisfy the requirement of achieving a throughput of 10 Gbps or more and a delay of a wireless section of 1 ms or less.
  • a radio access technology that supports 5G is called NR (New Radio).
  • Time-Sensitive NW TSN
  • Ultra-Reliable and Low-Latency Communication URLLC
  • Non-Patent Document 1 3GPP Release 16 Time-Sensitive NW (TSN) / Ultra-Reliable and Low-Latency Communication (URLLC) requires a synchronization accuracy of 1 microsecond or less.
  • the propagation delay between the user equipment and the base station can be 1 ⁇ sec or more, it is necessary to compensate for the time lag due to the propagation delay.
  • the present invention has been made in view of the above points, and it is an object of the present invention to provide a technique capable of appropriately compensating for a time lag due to a propagation delay between a user apparatus and a base station.
  • a receiver that receives the signal from a base station, the signal including information about a reference time when the signal is transmitted and information for adjusting an uplink transmission timing, and the signal is transmitted. And a control unit for compensating for a delay in a wireless section between the base station and the user equipment by using a reference time when the transmission is performed and information for adjusting the uplink transmission timing. Then, the control unit determines a reference time when the signal is received by compensating for a delay in a wireless section between the base station and the user device, and a user device is provided (Non-patent Document 1). References 2 and 3).
  • a technology capable of appropriately compensating for a time lag due to a propagation delay in a wireless section between a user device and a base station.
  • FIG. 3 is a diagram showing an example of a functional configuration of a base station 10. 3 is a diagram showing an example of a functional configuration of the user device 20.
  • FIG. 3 is a diagram showing an example of a hardware configuration of a base station 10 and a user device 20.
  • the wireless communication system in the following embodiments basically complies with NR, but this is an example, and the wireless communication system in this embodiment partially or wholly has a wireless function other than NR. It may be based on a communication system (for example, LTE).
  • FIG. 1 shows a configuration diagram of a wireless communication system according to the present embodiment.
  • the radio communication system according to the present embodiment includes base station 10 and user equipment 20, as shown in FIG. Although one base station 10 and one user device 20 are shown in FIG. 1, this is an example, and a plurality of each may be provided.
  • the user device 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine), and is wirelessly connected to the base station 10 to establish a wireless communication system. Use various communication services provided by.
  • the base station 10 is a communication device that provides one or more cells and wirelessly communicates with the user device 20.
  • the duplex system may be the TDD (Time Division Duplex) system or the FDD (Frequency Division Duplex) system.
  • FIG. 2 is a diagram for explaining the adjustment of the transmission timing of the UL signal (Time alignment).
  • the propagation delay between the user equipment and the base station which is the elapsed time when the radio wave propagates from the user equipment to the base station in the cell, is generally different for each user equipment.
  • the propagation delay T20A between the user equipment 20A at the center of the cell and the base station 10 is different from the propagation delay T20B between the user equipment 20B at the cell edge and the base station 10.
  • the base station 10 performs a fast Fourier transform (FFT) on the plurality of UL signals from the plurality of user equipments 20A and 20B at the same timing.
  • FFT fast Fourier transform
  • the UL signal transmission timing is adjusted for each of the user devices 20A and 20B so that the reception timings of the plurality of UL signals transmitted from the plurality of user devices 20A and 20B are the same at the base station. (Time alignment) is being conducted. It is assumed that the same operation as described above is performed also in NR.
  • FIG. 3 is a diagram for explaining synchronization between devices.
  • a very high synchronization accuracy of 1 ⁇ sec or less may be required between user devices that belong to the same communication group (between UE1 and UE2 in the example of FIG. 3).
  • FIG. 4 is a diagram showing required specifications of synchronization accuracy for each use case. As shown in FIG. 4, for example, synchronization accuracy of 0.25 to 1 ⁇ s is required between devices in live performance, synchronization accuracy of 1 to 10 ⁇ s is required between devices in a smart grid, and in a local conference system. It can be seen that synchronization accuracy of 20 ⁇ sec or less is required between the devices.
  • Black box model The black box model will be described with reference to FIG.
  • FIG. 5 is a diagram for explaining the black box model.
  • the 3GPP 5G system surrounded by a dotted line is provided with an accurate time reference from the TSN, and the accurate time obtained from the TSN can be distributed to all the user equipments in the system “black box”. box) ”.
  • the 3GPP 5G system can compensate for the time offset due to the delay at the air interface.
  • FIG. 6A is a diagram showing a relationship between DL transmission timing, DL reception timing, and propagation delay.
  • the base station 10 transmits TA command (Timing Advance Command, Timing Alignment Command, Time Alignment Command) to the user apparatus 20 at the reference time T gNB , and the user apparatus 20 sends to the reference time T UE .
  • TA command is received.
  • the difference between the reference time T gNB and the reference time T UE corresponds to the propagation delay of the wireless section between the base station 10 and the user apparatus 20.
  • Non-contention based random access As an example of the case where the user apparatus 20 receives the TA command, there is non-contention based random access (Non-contention based random access).
  • the TA command in non-collision random access includes information TA for adjusting the uplink transmission timing and information about the reference time T gNB .
  • Information regarding the reference time T gNB is included in TimeReferenceInfo in TA command.
  • FIG. 6B is a diagram illustrating the compensation of the propagation delay by the user apparatus 20.
  • the user device 20 receives the TA command from the base station 10.
  • the TA command in non-collision type random access includes information TA for adjusting the uplink transmission timing and information TimeReferenceInfo about the reference time T gNB .
  • the information TimeReferenceInfo includes the reference time T gNB corresponding to the boundary (SFN boundary) of the reference SFN (reference System Frame Number).
  • the user equipment 20 determines the reference time T UE when the user equipment 20 detects the boundary of the reference SFN by the following method.
  • the user equipment 20 calculates the one-way delay (TA / 2) of the wireless section between the user equipment 20 and the base station 10 by using the information TA for adjusting the uplink transmission timing included in the TA command.
  • T UE T gNB + TA / 2.
  • the user apparatus 20 can compensate for the propagation delay in the wireless section between the user apparatus 20 and the base station 10.
  • N TA representing the UL transmission timing after the TA command is applied may be used.
  • N TA is a variable that represents a timing shift (timing offset) between uplink and downlink radio frames.
  • non-collision type random access Non-contention based random access
  • collision type random access Contension based random access
  • TA command MAC Control MAC Element entity
  • CE RACH-less HO
  • the RACH skip handover is a method of omitting the RACH and shortening the instantaneous interruption when the TAs before and after the handover are equal, and the omission of the RACH is applicable not only to the handover but also to the change of the PSCell and the like.
  • the network in the Multiple TA, instructs the user equipment which TA out of the plurality of TAs the user equipment is maintaining at that time in the target cell.
  • the propagation delay compensation by the user equipment may be applied in all the above cases, or may be applied only in some cases as follows.
  • Compensation of propagation delay by the user device may be applied to TA command other than the case of receiving by collision type random access.
  • TA command may contain transmission timing information for multiple user devices. Therefore, TA command in collision-type random access should not be used.
  • the TA device may be used to compensate for the propagation delay by the user equipment.
  • the user equipment may request the TA command from the network. The request may be sent by any of the RRC, MAC and PHY signals. Alternatively, the random access procedure may be activated again.
  • the propagation delay compensation by the user device it may be applied only when the TA is received by the TA command MAC CE.
  • CA / DC When there are multiple CCs / Cells
  • CA Carrier Aggregation
  • DC Dual Connectivity
  • the above-mentioned compensation of the propagation delay by the user equipment may be applied only to some cells.
  • a user apparatus receives alerting
  • the propagation is performed based on Observed Time Difference of Arrival (OTDOA).
  • OTDOA Observed Time Difference of Arrival
  • the delay may be calculated.
  • the “other CC / Cell” may be SpCell (PCell or PSCell), may be specified by the network, or may have a specific identifier (eg, SCellIndex, ServCellIndex). Further, it may be limited to activated CC / Cell.
  • TAG TA Groups
  • N TA UL transmission timing
  • CCs / Cells have almost the same time information. In this case, even if any CC / Cell of some CCs / Cells is used as a reference cell (reference cell) and the time information of the reference cell is applied to other CCs / Cells of some CCs / Cells. Good.
  • -It may be determined that some CC / Cell related information is received explicitly from the base station and that they have substantially the same time information, or it may be implicitly determined from the frequency information. For example, it may be assumed that CCs / Cells (for example, intra-band CCs) that are close in frequency have the same time information.
  • BWP Bandwidth Parts
  • the compensation of the propagation delay by the user equipment may be applied to the TA command obtained in any BWP random access procedure, or may be applied only to "a part of BWP".
  • Partial BWP includes initial BWP, default BWP, BWP specified from the network, BWP having a specific identifier (eg, largest BWP-id, smallest BWP-id), and finally BWP that is active.
  • the active BWP the highest quality BWP, the BWP including the SSB (or PBCH), the BWP including the SIB reporting the time information (for example, UTC), and the specific subcarrier spacing (SCS)
  • the set BWP eg, user equipment, CC / Cell, or BWP set to the largest SCS set to the carrier or the smallest SCS, and the like.
  • the user device can execute the random access procedure in both Normal UL (NUL) and SUL.
  • Propagation delay compensation by the user equipment may be applied to both TA command of the TA command received by the random access procedure in NUL and TA command received by the random access procedure of SUL, or one of the TA command It may be applied only to the TA command. For example, it may be applied to the TA command received for UL transmission (including PRACH transmission) for NUL.
  • the user apparatus 20 may notify the base station 10 of the ability to compensate for the propagation delay.
  • it may be notified for each RAT, each user apparatus, each band combination (band combination set), each band, each frequency, or each numberology.
  • the delay in the base station 10 may be similarly compensated.
  • the delay between CU and DU, the delay between DU and RU (/ antenna), etc. may be compensated.
  • the base station 10 notifies the time information (eg, UTC (Coordinated Universal Time)) by adding the delay between the CU and the DU and the delay between the DU and the RU (/ antenna), for example, by the broadcast information.
  • the time information may be notified to the user device 20 as a time offset separately from the conventional time information.
  • the delay may be measured between the nodes included in the base station 10 and the time information may be exchanged between the nodes.
  • the fluctuation due to the implementation of the base station 10 may be notified.
  • the user device 20 determines the time information using the offset and the fluctuation notified from the base station 10.
  • the user apparatus 20 does not have to apply the UL transmission timing adjustment control (Non-Patent Document 4) associated with the DL reception timing deviation when performing the above-mentioned propagation delay compensation.
  • Non-Patent Document 4 the UL transmission timing adjustment control associated with the DL reception timing deviation when performing the above-mentioned propagation delay compensation.
  • the compensation of the above-mentioned propagation delay by the user apparatus 20 may be applied only to the cell in which a specific SCS is used.
  • the base station 10 and the user equipment 20 include functions for implementing the above-described embodiments. However, the base station 10 and the user device 20 may each be provided with only a part of the functions in the embodiment.
  • FIG. 7 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in FIG. 7 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, any name may be used for the function classification and the function unit.
  • the transmitting unit 110 includes a function of generating a signal to be transmitted to the user device 20 side and wirelessly transmitting the signal.
  • 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.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the user device 20, in the storage device, and reads from the storage device as necessary.
  • the control unit 140 controls the transmission of the TA command to the user device 20, as described in the embodiment.
  • the functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the reception unit 120.
  • FIG. 8 is a diagram illustrating an example of a functional configuration of the user device 20.
  • the user device 20 includes a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in FIG. 8 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, any name may be used for the function classification and the function unit.
  • the transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the reception unit 220 wirelessly receives various signals and acquires higher-layer signal from the received physical-layer signal.
  • the setting unit 230 stores various setting information received from the base station 10 or the user device 20 by the receiving unit 220 in a storage device, and reads it from the storage device as necessary.
  • the setting unit 230 also stores preset setting information.
  • the control unit 240 controls the reception of the TA command from the base station 10 as described in the embodiment. Further, the control unit 240 uses the TA command received from the base station 10 to control the compensation process of the propagation delay in the wireless section between the user apparatus 20 and the base station 10.
  • the functional unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the functional 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 using one device physically or logically coupled, or directly or indirectly (for example, two or more devices physically or logically separated). , Wired, wireless, etc.) and may be implemented using these multiple devices.
  • the functional blocks may be realized by combining the one device or the plurality of devices with software.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, observation, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but not limited to these.
  • a functional block (component) that functions for transmission is called a transmitting unit or a transmitter.
  • the implementation method is not particularly limited.
  • the base station 10, the user device 20, and the like may function as a computer that performs the process of the wireless communication method of the present disclosure.
  • FIG. 9 is a diagram illustrating an example of a hardware configuration of the base station 10 and the user device 20 according to an embodiment of the present disclosure.
  • the base station 10 and the user device 20 described above are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be.
  • the word “device” can be read as a circuit, device, unit, or the like.
  • the hardware configurations of the base station 10 and the user device 20 may be configured to include one or a plurality of each device illustrated in the figure, or may be configured not to include some devices.
  • Each function in the base station 10 and the user device 20 causes a predetermined software (program) to be loaded on hardware such as the processor 1001, the storage device 1002, etc., so that the processor 1001 performs calculation and controls communication by the communication device 1004. Or by controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • a predetermined software program
  • the processor 1001 operates an operating system to control the entire computer, for example.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the control unit 140, the control unit 240, and the like described above may be realized by the processor 1001.
  • the processor 1001 also reads a program (program code), software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to these.
  • a program that causes a computer to execute at least part of the operations described in the above-described embodiments is used.
  • the control unit 140 of the base station 10 illustrated in FIG. 7 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the control unit 240 of the user device 20 shown in FIG. 8 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via an electric communication line.
  • the storage device 1002 is a computer-readable recording medium, and is, for example, at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (ElectricallyErasable Programmable ROM), RAM (Random Access Memory), and the like. 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 an executable program (program code), a software module, or the like for implementing the communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu disk). -Ray disk), smart card, flash memory (eg card, stick, key drive), floppy disk, magnetic strip, etc.
  • the auxiliary storage device 1003 may be called an auxiliary storage device.
  • the above-described 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 another appropriate medium.
  • the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module or the like.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of a frequency division duplex (FDD: Frequency Division Duplex) and a time division duplex (TDD: Time Division Duplex). May be composed of
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmitter / receiver may be implemented by physically or logically separating the transmitter and the receiver.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
  • the base station 10 and the user device 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include hardware, and a part or all of each functional block may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these hardware.
  • the reception of the signal including the information about the reference time when the signal is transmitted and the information for adjusting the uplink transmission timing from the base station.
  • a control unit for compensating for a delay in a wireless section between the base station and the user equipment using a unit, a reference time when the signal is transmitted, and information for adjusting the uplink transmission timing.
  • a user apparatus that determines a reference time when the signal is received by compensating for a delay in a wireless section between the base station and the user apparatus. Provided.
  • the user device 20 can appropriately compensate for the time lag due to the propagation delay in the wireless section between the user device 20 and the base station 10.
  • the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by the plurality of components.
  • the order of the processing may be changed as long as there is no contradiction.
  • the base station 10 and the user equipment 20 have been described using functional block diagrams, but such equipment may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor included in the base station 10 according to the embodiment of the present invention and the software operated by the processor included in the user device 20 according to the embodiment of the present invention are respectively random access memory (RAM), flash memory, and read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
  • the notification of information is not limited to the mode / embodiment described in the present disclosure, and may be performed using another method.
  • information is notified by physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be carried out 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. It may be a connection setup (RRC Connection Setup) message, an RRC connection reconfiguration message, or the like.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • FRA Full Radio Access
  • NR new Radio
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB Universal Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 UWB (Ultra-WideBand
  • Bluetooth registered trademark
  • other systems using appropriate systems, and extensions based on these It may be applied to at least one of the next-generation systems.
  • a plurality of systems may be combined and applied (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation that is performed by the base station 10 in this specification may be performed by its upper node in some cases.
  • various operations performed for communication with the user equipment 20 are performed by the base station 10 and other network nodes other than the base station 10. Obviously, it can be done by at least one of (for example, but not limited to, MME or S-GW etc.).
  • the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). ..
  • Information, signals, etc. described in the present disclosure may be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
  • Information that has been input and output may be stored in a specific location (for example, memory), or may be managed using a management table. Information that is input / output may be overwritten, updated, or added. The output information and the like may be deleted. The input information and the like may be transmitted to another device.
  • the determination in the present disclosure may be performed based on a value (0 or 1) represented by 1 bit, may be performed based on a Boolean value (Boolean: true or false), or may be performed by comparing numerical values (for example, , Comparison with a predetermined value).
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • the software uses a wired technology (coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and / or wireless technology (infrared, microwave, etc.) websites, When sent from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.
  • wired technology coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.
  • wireless technology infrared, microwave, etc.
  • Information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description include voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any of these. May be represented by a combination of
  • At least one of the channel and the symbol may be a signal (signaling).
  • the signal may also be a message.
  • a component carrier CC may be called 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 represented by using an absolute value, may be represented by using a relative value from a predetermined value, or by using other corresponding information. May be represented.
  • the radio resources may be those indicated by the index.
  • base station (BS: Base Station)”, “radio base station”, “base station”, “fixed station”, “NodeB”, “eNodeB (eNB)”, “gNodeB ( gNB) ”,“ access point ”,“ transmission point ”,“ reception point ”,“ transmission / reception point ”,“ cell ”,“ sector ”,“ Terms such as “cell group”, “carrier”, “component carrier” may be used interchangeably.
  • a base station may be referred to by terms such as macro cell, small cell, femto cell, pico cell, and the like.
  • a base station can accommodate one or more (eg, three) cells.
  • 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 defined by a base station subsystem (eg, indoor small base station (RRH: Communication services can also be provided by Remote Radio Head) .
  • RRH indoor small base station
  • the term "cell” or “sector” refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that perform communication services in this coverage. Refers to.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station can be 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, by a person skilled in the art. 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 transmission device, a reception device, a communication device, or the like.
  • 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).
  • At least one of the base station and the mobile station also includes a device that does not necessarily move during a communication operation.
  • 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 the user terminal.
  • the communication between the base station and the user terminal is replaced with communication between a plurality of user devices 20 (eg, may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
  • a plurality of user devices 20 eg, may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.
  • the user apparatus 20 may have the function of the above-described base station 10.
  • the wording such as “up” and “down” may be replaced with the wording corresponding to the communication between terminals (for example, “side”).
  • the uplink channel and the downlink channel may be replaced with the side channel.
  • the user terminal in the present disclosure may be replaced by the base station.
  • the base station may have the function of the above-described user terminal.
  • determining and “determining” as used in this disclosure may encompass a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment, calculating, computing, processing, deriving, investigating, and looking up, search, inquiry. (Eg, searching in a table, database or another data structure), ascertaining what is considered to be “judgment” or “decision”, and the like.
  • “decision” and “decision” include receiving (eg, receiving information), transmitting (eg, transmitting information), input (input), output (output), access (accessing) (for example, accessing data in a memory) may be regarded as “judging” and “deciding”.
  • judgment and “decision” are considered to be “judgment” and “decision” when things such as resolving, selecting, choosing, establishing, establishing, and comparing are done. May be included. That is, the “judgment” and “decision” may include considering some action as “judgment” and “decision”. In addition, “determination (decision)” may be read as “assuming", “expecting”, “considering”, and the like.
  • connection means any direct or indirect connection or coupling between two or more elements, and It can include the presence of one or more intermediate elements between two elements that are “connected” or “coupled”.
  • the connections or connections between the elements may be physical, logical, or a combination thereof.
  • connection may be read as “access”.
  • two elements are in the radio frequency domain, with at least one of one or more wires, cables and printed electrical connections, and as some non-limiting and non-exhaustive examples. , Can be considered to be “connected” or “coupled” to each other, such as with electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions.
  • the reference signal may be abbreviated as RS (Reference Signal), or may be referred to as a pilot (Pilot) depending on the applied standard.
  • RS Reference Signal
  • Pilot pilot
  • the phrase “based on” does not mean “based only on,” unless expressly specified otherwise. In other words, the phrase “based on” means both "based only on” and “based at least on.”
  • any reference to elements using designations such as “first”, “second”, etc. as used in this disclosure 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, references to the first and second elements do 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 referred to as a subframe. A subframe may also be composed of one or more slots in the time domain. The subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • Numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
  • Numerology includes, for example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, radio frame configuration, transceiver At least one of a specific filtering process performed in the frequency domain and a specific windowing process performed by the transceiver in the time domain may be shown.
  • a slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
  • a slot may be a time unit based on numerology.
  • a slot may include multiple minislots. Each minislot may be composed of one or more symbols in the time domain. The minislot may also be called a subslot. Minislots may be configured with a smaller number of symbols than slots.
  • PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using a minislot may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent the time unit for transmitting signals. Radio frames, subframes, slots, minislots, and symbols may have different names corresponding to them.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI means, for example, the minimum time unit of scheduling in wireless communication.
  • the base station performs scheduling for allocating radio resources (frequency bandwidth that can be used in each user device 20, transmission power, etc.) to each user device 20 in units of TTI.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit of a channel-encoded data packet (transport block), code block, codeword, or the like, or may be a processing unit of scheduling, link adaptation, or the like.
  • the time interval for example, the number of symbols
  • the transport block, code block, codeword, etc. 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), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • the TTI shorter than the normal TTI may be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • a long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and a short TTI (eg, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or more continuous subcarriers in the frequency domain.
  • the number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in the RB may be determined based on numerology.
  • the time domain of the RB may include one or more symbols, and may be one slot, one minislot, one subframe, or one TTI in length.
  • Each 1 TTI, 1 subframe, etc. may be configured with one or a plurality of resource blocks.
  • One or more RBs are a physical resource block (PRB: Physical RB), subcarrier group (SCG: Sub-Carrier Group), resource element group (REG: Resource Element Group), PRB pair, RB pair, etc. May be called.
  • PRB Physical resource block
  • SCG Sub-Carrier Group
  • REG Resource Element Group
  • PRB pair RB pair, etc. May be called.
  • a resource block may be composed of one or more resource elements (RE: Resource Element).
  • RE Resource Element
  • one RE may be a radio resource area of one subcarrier and one symbol.
  • a bandwidth part (may be called a partial bandwidth) may represent a subset of consecutive common RBs (common resource blocks) for a certain numerology in a certain carrier.
  • the common RB may be specified by the index of the RB based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • BWP for UL
  • DL BWP BWP for DL
  • One or more BWPs may be set in one carrier for the UE.
  • At least one of the configured BWPs may be active, and the UE does not have to assume that it will send and receive predetermined signals / channels outside the active BWP.
  • BWP bitmap
  • the above-described structure of the radio frame, subframe, slot, minislot, symbol, etc. is merely an example.
  • 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, and the number included in RB The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and the like can be variously changed.
  • 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”.
  • the terms “remove”, “coupled” and the like may be construed as “different” as well.
  • the notification of the predetermined information (for example, the notification of “being X”) is not limited to the explicit notification, but is performed implicitly (for example, the notification of the predetermined information is not performed). Good.
  • base station 110 transmission unit 120 reception unit 130 setting unit 140 control unit 20 user device 210 transmission unit 220 reception unit 230 setting unit 240 control unit 1001 processor 1002 storage device 1003 auxiliary storage device 1004 communication device 1005 input device 1006 output device

Abstract

L'invention concerne un équipement d'utilisateur comprenant : une unité de réception qui reçoit d'une station de base un signal comprenant des informations relatives à un temps de référence lorsque le signal est transmis et des informations pour ajuster une synchronisation de transmission de liaison montante; et une unité de commande qui compense un retard dans une section sans fil entre la station de base et l'équipement utilisateur en utilisant le temps de référence lorsque le signal est transmis et les informations pour ajuster la synchronisation de transmission en liaison montante. En compensant le retard dans la section sans fil entre la station de base et l'équipement utilisateur, l'unité de commande détermine un temps de référence lorsque le signal est reçu.
PCT/JP2018/040770 2018-11-01 2018-11-01 Équipement utilisateur WO2020090095A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/040770 WO2020090095A1 (fr) 2018-11-01 2018-11-01 Équipement utilisateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/040770 WO2020090095A1 (fr) 2018-11-01 2018-11-01 Équipement utilisateur

Publications (1)

Publication Number Publication Date
WO2020090095A1 true WO2020090095A1 (fr) 2020-05-07

Family

ID=70463055

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/040770 WO2020090095A1 (fr) 2018-11-01 2018-11-01 Équipement utilisateur

Country Status (1)

Country Link
WO (1) WO2020090095A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115836551A (zh) * 2020-07-10 2023-03-21 株式会社Ntt都科摩 无线基站

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CMCC: "Support for Accurate Reference Timing Delivery", 3GPP TSG-RAN WG3 #101BIS R3-186035, 29 September 2018 (2018-09-29), XP051529300 *
HUAWEI ET AL.: "Discussion on use cases and requirements on synchronization", 3 GPP TSG-RAN WG2# 101 R2-1802880, 15 February 2018 (2018-02-15), XP051399611 *
HUAWEI ET AL.: "TP on TA-offset for SUL", 3GPP TSG RAN WG1 #92 RL-1802712, 17 February 2018 (2018-02-17), XP051398145 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115836551A (zh) * 2020-07-10 2023-03-21 株式会社Ntt都科摩 无线基站

Similar Documents

Publication Publication Date Title
WO2020090097A1 (fr) Dispositif utilisateur et dispositif de station de base
WO2021199415A1 (fr) Terminal et procédé de communication
JP7073529B2 (ja) 端末、基地局及び通信方法
WO2021149110A1 (fr) Terminal et procédé de communication
WO2020100379A1 (fr) Dispositif d'utilisateur et dispositif de station de base
WO2020090095A1 (fr) Équipement utilisateur
WO2021157093A1 (fr) Terminal et procédé de communication
JP7203199B2 (ja) 端末、基地局及び通信方法
KR20220146439A (ko) 단말 및 통신 방법
WO2020157986A1 (fr) Dispositif utilisateur et dispositif de station de base
WO2020166046A1 (fr) Dispositif d'utilisateur et procédé de commande
WO2020144786A1 (fr) Terminal et procédé de communication
WO2020161824A1 (fr) Dispositif utilisateur et dispositif de station de base
WO2020170445A1 (fr) Dispositif utilisateur et dispositif de station de base
WO2020157987A1 (fr) Dispositif d'utilisateur et dispositif de station de base
CN114208327A (zh) 终端以及通信方法
KR20210138011A (ko) 유저장치 및 기지국장치
JPWO2020161907A1 (ja) ユーザ装置
WO2021152861A1 (fr) Terminal et procédé de communication
CN114208246B (zh) 用户装置、基站装置以及通信方法
WO2022085169A1 (fr) Terminal et procédé de communication
WO2022153422A1 (fr) Terminal et procédé de communication
WO2020230623A1 (fr) Équipement utilisateur et dispositif de station de base
WO2022038919A1 (fr) Terminal et procédé de communication
WO2021075513A1 (fr) Terminal et procédé de mesure

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: 18938579

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: 18938579

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP