WO2022220499A1 - Dispositif relais permettant d'acquérir une synchronisation sur la base de l'intelligence artificielle, et son procédé de fonctionnement - Google Patents

Dispositif relais permettant d'acquérir une synchronisation sur la base de l'intelligence artificielle, et son procédé de fonctionnement Download PDF

Info

Publication number
WO2022220499A1
WO2022220499A1 PCT/KR2022/005114 KR2022005114W WO2022220499A1 WO 2022220499 A1 WO2022220499 A1 WO 2022220499A1 KR 2022005114 W KR2022005114 W KR 2022005114W WO 2022220499 A1 WO2022220499 A1 WO 2022220499A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
downlink
tdd
control signal
synchronization control
Prior art date
Application number
PCT/KR2022/005114
Other languages
English (en)
Korean (ko)
Inventor
조갑구
선종필
Original Assignee
주식회사 유큐브이
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 주식회사 유큐브이 filed Critical 주식회사 유큐브이
Priority to JP2022580418A priority Critical patent/JP2023532052A/ja
Publication of WO2022220499A1 publication Critical patent/WO2022220499A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks
    • G06N3/08—Learning methods
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a relay device and a method of operating the relay device. More specifically, the present invention relates to a relay device for acquiring Time Division Duplex (TDD) synchronization based on artificial intelligence and a method of operating the relay device.
  • TDD Time Division Duplex
  • a relay device or repeater In a wireless communication system, a relay device or repeater is widely used to expand the coverage of a base station without additional extension of the base station and to solve a shadow area at the same time. To this end, the repeater serves to relay uplink/uplink signal transmission/reception between the base station and the terminal (or user terminal).
  • the repeater does not transmit and receive signals at the same time, but alternately transmit and receive according to the operation of the base station. .
  • the repeater switches the antenna module according to the signal transmission/reception timing between the base station and the terminal (eg, DL (downlink) section, UL (uplink) section, etc.), so that the repeater transmits the antenna module for signal transmission/reception with the base station (or terminal). It may be configured to be connected to a signal processing module or a reception signal processing module.
  • the repeater needs to acquire synchronization with the base station.
  • the repeater needs to synchronize with the signal transmission timing or signal reception timing of the base station in order to switch the antenna module for signal relay between the base station and the terminal.
  • Korean Patent Laid-Open Publication No. 10-2020-0125855 proposes a method for a TDD repeater to acquire synchronization.
  • the repeater detects a synchronization signal (eg, PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), PBCH (Physical Broadcast Channel) signal, etc.) transmitted from the base station), and the TDD frame structure and TDD from the corresponding synchronization signal. It is necessary to obtain frame timing.
  • a synchronization signal eg, PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), PBCH (Physical Broadcast Channel) signal, etc.
  • the repeater in order to implement this operation, the repeater must have information on the TDD frame structure of a specific communication service provider, and also be able to implement the physical layer technology defined in the 3GPP standard for the TDD frame structure. There is a problem that requires a lot of cost to actually implement the requirements.
  • An object of the present invention is to provide a relay device and an operating method of the relay device capable of solving the above problems and maximizing relay performance between a base station and a terminal.
  • a TDD (Time Division Duplex) repeater for relaying a base station and a terminal includes: a donor antenna for transmitting and receiving signals to and from the base station; a service antenna for transmitting and receiving signals to and from the terminal, and a controller for controlling switching of TDD antennas for the donor antenna and the service antenna, and controlling an operation of the TDD repeater, wherein the controller includes a plurality of downlink signals for learning Deep learning is performed for deriving a downlink synchronization control signal having a minimum value of a downlink Error Vector Magnitude (EVM) of the TDD repeater based on a set of downlink signals for learning to which radio propagation environments are respectively applied, and the deep learning Using the artificial intelligence program learned through output, and based on TDD antenna switching according to the downlink ON synchronization control signal and the downlink OFF synchronization control signal, the downlink signal received from the base station from the first time point to the second time point.
  • EDM Error Vector Magnitude
  • the plurality of radio propagation environments may include at least two adjusted environments among multi-path, time delay for each multi-path, Doppler spreading, fading, interference, and attenuation.
  • the controller is an uplink synchronization control signal in which the uplink EVM of the TDD repeater has a minimum value based on a training uplink signal set in which the plurality of radio propagation environments are respectively applied to the training uplink signal.
  • the uplink on (ON) synchronization control signal and the uplink off (OFF) corresponding to the uplink signal received from the terminal ) output a synchronization control signal at a third time and a fourth time, respectively, and based on the TDD antenna switching according to the uplink ON synchronization control signal and the uplink OFF synchronization control signal, from the terminal It may be configured to relay the received uplink signal to the base station during a time interval from the third time point to the fourth time point.
  • the TDD repeater may acquire synchronization with the base station by using the operation method of the TDD repeater without detecting the synchronization signal transmitted from the base station.
  • the synchronization signal is a primary synchronization signal (PSS) defined by a 3rd Generation Partnership Project (3GPP) 5th Generation New Radio (NR) standard, a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) signal. It may include at least one.
  • the TDD repeater may include an L0 (Layer 0) repeater having an interval delay smaller than one symbol interval.
  • a method of operating a time division duplex (TDD) repeater for solving the above-described problems is based on a downlink signal set for learning in which a plurality of radio propagation environments are respectively applied to a downlink signal for learning, the TDD
  • EVM Error Vector Magnitude
  • the computer program according to another aspect of the present invention for solving the above problems may include a computer program stored in a computer-readable recording medium in combination with a computer to execute the above-described method of operation of the TDD repeater. .
  • the relay device can minimize the cost required for development and verification and maximize the relay performance between the base station and the terminal.
  • the relay device can perform relay between the base station and the terminal with low delay (within about 2us).
  • FIG. 1 is a diagram briefly showing an operation method of a repeater according to the present invention.
  • FIG. 2 is a diagram schematically illustrating a structure of a repeater and a communication system including the same according to the present invention.
  • FIG. 3 is a diagram briefly illustrating an AI modeling method through deep learning according to an example of the present invention.
  • FIG. 4 is a diagram illustrating preferred timing of a DL/UL synchronization control signal according to the present invention
  • FIG. 5 is a diagram illustrating an undesirable timing of a DL/UL synchronization control signal, unlike FIG. 4 .
  • FIG. 6 is a flowchart illustrating a method of operating a repeater according to the present invention.
  • a communication facility that provides wireless communication services to terminals by being connected to a wireless communication network.
  • it may include an evolved NodeB (eNB) according to a long term evolution (LTE) system and a gNB according to a 5G new radio (NR) system.
  • eNB evolved NodeB
  • LTE long term evolution
  • NR 5G new radio
  • a communication device that receives a wireless communication service from a base station. It may also be referred to as a user equipment (UE). As an example, it may include a smartphone, a notebook computer, a wearable device, and the like.
  • UE user equipment
  • -Relay device A communication device that relays a wireless communication service between a base station and a terminal.
  • it may include a relay device according to the LTE system and an Integrated Access Backhauled Networks (IAB) device according to the 5G NR system.
  • IAB Integrated Access Backhauled Networks
  • UL Uplink
  • PUSCH physical uplink shared channel
  • DL Downlink
  • DL A communication link used by a base station to transmit a signal to a terminal.
  • the downlink signal may be transmitted through a channel such as a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • FIG. 1 is a diagram briefly showing an operation method of a repeater according to the present invention.
  • the repeater 10 serves to relay signal transmission/reception between the base station 1 and the terminal 100 . More specifically, the repeater 10 receives a downlink signal (eg, a control signal, a data signal, etc.) that the base station 1 wants to transmit to the terminal 100 from the base station 1 and receives the terminal ( 100) can be sent. In addition, the repeater 10 receives an uplink signal (eg, a control signal, a data signal, etc.) that the terminal 100 wants to transmit to the base station 1 from the terminal 100 and receives the base station 1 can be sent to a downlink signal (eg, a control signal, a data signal, etc.) that the base station 1 wants to transmit to the base station 1 from the terminal 100 and receives the base station 1 can be sent to a downlink signal (eg, a control signal, a data signal, etc.) that the base station 1 wants to transmit to the base station 1 from the terminal 100 and receives the base station 1 can be sent to a downlink signal (eg, a control signal,
  • 'signal relay' may include a series of operations in which the repeater processes and transmits (or broadcasts) a signal received from the transmitter so that the receiver can receive it.
  • 'signal relay' may include a case in which the repeater adjusts the intensity of the transmitted signal of the received signal based on the strength of the signal received from the transmitter, the content of the signal, and the like, and transmits (or broadcasts) the signal to the receiver.
  • the 'signal relay' may include a method in which the repeater modulates the signal information received from the transmitter according to the channel state of the repeater-receiver and transmits (or broadcasts) it to the receiver.
  • the transmitter-receiver pair may include a base station-terminal pair, a terminal-base station pair, and the like.
  • FIG. 2 is a diagram schematically illustrating a structure of a repeater and a communication system including the same according to the present invention.
  • FIG. 2 Prior to the description of the repeater according to the present invention, terms used in FIG. 2 may be defined as follows.
  • the ANT included in the repeater may include (1) a donor ANT for transmitting and receiving signals with a base station and (2) a service ANT for transmitting and receiving signals with a terminal.
  • BPF band pass filter
  • the LNA low noise amplifier
  • the LNA may serve to amplify a weak radio signal received by an antenna into a signal of an appropriate level for processing in a down converter or other receiver circuit.
  • the LNA may be installed immediately after the ANT, which is the receiver entry point of the wireless communication system.
  • the LNA may be installed between the ANT and the receiver frequency down converter (mixer).
  • the PA may be referred to as a high power amplifier (HPA).
  • HPA high power amplifier
  • - DNC Down converter
  • It is a frequency band converter that converts an input signal into a signal of a low frequency band.
  • - UPC (up converter): It is a frequency band converter that converts an input signal into a signal of a high frequency band.
  • ADC analog to digital converter
  • - DAC digital to analog converter
  • TDD RF signal envelope detection device TDD RF signal envelope detection device.
  • the coupler may distribute and provide a signal input through a donor/service antenna to an AI-based synchronization acquisition module.
  • the TDD repeater 10 for signal relay between the 5G base station 1 and the 5G terminal 100, the donor antenna 11, the service antenna 12, the first It may include an RF block 13 , a digital block 14 , a second RF block 15 , a controller 16 , and an AI-based synchronization acquisition module 17 .
  • each component of the TDD repeater may be configured as follows.
  • the donor antenna 11 may perform signal transmission/reception between the TDD repeater 10 and the 5G base station 1 .
  • the TDD repeater 10 may receive a DL signal from the 5G base station 1 or transmit a UL signal to the 5G base station 1 through the donor antenna 11 .
  • the service antenna 12 may perform signal transmission/reception between the TDD repeater 10 and the 5G terminal 100 .
  • the TDD repeater 10 may receive a UL signal from the 5G terminal 100 or transmit a DL signal to the 5G terminal 100 through the service antenna 12 .
  • the first RF block 13 , the digital block 14 , and the second RF block 15 may each include a DL relay part for relaying a DL signal and a UL relay part for relaying a UL signal.
  • the controller 16 controls the TDD RF switch so that the donor antenna 11 and the service antenna 12 are in the first RF block 13 , the digital block 14 , and the second RF block 15 . It can be set to be electrically connected to the DL relay part or the UL relay part.
  • the first RF block 13, the digital block 14, and the second RF block 15 may perform signal processing for DL signal relay or UL signal relay according to the control of the TDD RF switch. have.
  • the first RF block 13 may include a BPF connected to the donor antenna 11 , a TDD RF switch connected to the BPF, and a DL/UL relay part connected to the TDD RF switch.
  • the BPF element is connected to the donor antenna 11 to minimize the signal of the unnecessary frequency band, thereby increasing the efficiency of the removal of the interference signal and the restoration of the original signal.
  • the BPF element may or may not be included in the first RF block 13 according to an embodiment.
  • the DL relay part in the first RF block 13 may be configured to include a DL LNA, a DL DNC, and an ADC.
  • the first RF block 13 minimizes and amplifies the noise of the DL signal received from the base station, and converts the amplified radio frequency band signal into a low frequency band (eg, intermediate frequency band) signal, The converted analog signal can be converted into a digital signal.
  • the UL relay part in the first RF block 13 may be configured to include a DAC, a UL UPC, and a UL PA.
  • the first RF block 13 converts the signal-processed digital signal into an analog signal, converts the analog signal into a high frequency band (eg, a radio frequency band), and amplifies the converted signal to a base station can be sent to
  • the second RF block 15 may include a BPF connected to the service antenna 12, a TDD RF switch connected to the BPF, and a DL/UL relay part connected to the TDD RF switch.
  • the BPF element is connected to the service antenna 12 to minimize the signal of the unnecessary frequency band, thereby increasing the efficiency of the removal of the interference signal and the restoration of the original signal.
  • the BPF element may or may not be included in the second RF block 15 depending on the embodiment.
  • the DL relay part in the second RF block 15 may be configured to include a DAC, a DL UPC, and a DL PA.
  • the DL UPC and DL PA may process the transmission signal similarly to the above-described UL UPC and UL PA.
  • the UL relay part in the second RF block 15 may be configured to include a UL LNA, a UL DNC, and an ADC.
  • the UL LNA, UL DNC, and ADC may process the received signal similarly to the above-described DL LNA, DL DNC, and ADC.
  • the digital block 14 may be connected to the first RF block 13 and the second RF block 15 to perform signal processing for a DL relay part or a signal processing for a UL relay part. More specifically, the digital block 14 may extract only the original signal by removing the interference signal from the DL signal (or UL signal) converted into the digital signal. To this end, the DL relay part in the digital block 14 applies filtering and DL feedback (eg, interference caused by receiving a DL signal through a DL donor antenna) cancellation to the digital signal provided from the first RF block 13 . can do. Similarly, the UL relay part in the digital block 14 filters the digital signal provided from the second RF block 15 and removes UL feedback (eg, interference caused by receiving a UL signal through a UL service antenna) can be applied.
  • filtering and DL feedback eg, interference caused by receiving a DL signal through a DL donor antenna
  • the controller 16 may be electrically connected to all components in the TDD repeater 10 to control the operation of all components.
  • the controller 16 controls the first RF block 13 and the second RF block 15 , and in particular, a TDD RF switch in the first RF block 13 and the second RF block 15 . can control
  • the artificial intelligence (AI)-based synchronization acquisition module 17 may implement synchronization acquisition based on a DL signal received from a base station. According to an embodiment, the AI-based synchronization acquisition module 17 may implement synchronization acquisition by considering not only the DL signal received from the base station but also the UL signal received from the terminal.
  • the AI-based synchronization acquisition module 17 may detect a signal received by being connected to the donor antenna 11 (also additionally the service antenna 12 according to an embodiment). To this end, the AI-based synchronization acquisition module 17 may appropriately detect a signal received through an antenna including a BPF element, an AMP element, and a DET element. Then, the AI-based synchronization acquisition module 17 may input the detected signal to the pre-learned AI algorithm and output a DL synchronization control signal (along with a UL synchronization control signal according to an embodiment) as an output value.
  • the DL synchronization control signal may include a signal for controlling the ON/OFF state of the DL relay part (or UL relay part) in the TDD repeater.
  • the DL/UL ON synchronization control signal may operate an amplification circuit in the DL/UL relay part of the TDD repeater, and the DL/UL OFF synchronization control signal may stop the amplification circuit in the DL/UL relay part of the TDD repeater.
  • the DL/UL ON synchronization control signal operates the TDD RF switch to be connected to the DL/UL relay part, and the DL/UL OFF synchronization control signal causes the TDD RF switch to disconnect the DL/UL relay part.
  • the AI algorithm according to the present invention may be learned through the following method.
  • FIG. 3 is a diagram briefly illustrating an AI modeling method through deep learning according to an example of the present invention.
  • AI modeling (or AI model learning) according to the present invention applies various wireless propagation environments to separately generated signals and outputs DL/UL synchronization control signals that maximize the EVM (Error Vector Magnitude) performance of the repeater. It may include a learning system.
  • EVM Error Vector Magnitude
  • a TDD base station signal may be separately generated, or a TDD terminal signal synchronized with the TDD base station signal may be additionally generated.
  • a randomly generated TDD base station signal (or additionally randomly generated TDD terminal signal) may be utilized.
  • the radio channel simulator can generate a set of signals for learning by applying various radio propagation environments to the signals thus generated.
  • the radio channel simulator may apply two or more adjusted environments of multipath, time delay per multipath, Doppler spreading, fading, interference, and attenuation to the signal.
  • the radio channel simulator controller may control the radio wave environment scenario applied to the radio channel simulator.
  • the generated training signal set is applied to a computer, and the computer may check the DL (or additionally UL) EVM value while changing the DL (or additionally UL) synchronization control signal.
  • DL EVM measurement may be basically performed, and UL EVM measurement may be supplementarily performed.
  • the EVM value may be changed according to the rising/falling time according to the on/off operation of the repeater. Accordingly, according to the AI modeling according to the present invention, it is possible to obtain a DL/UL synchronization control signal capable of deriving an optimal EVM value for a specific DL/UL signal by repeatedly performing the above method.
  • EVM refers to the size of an error vector, which is a difference between an originally intended transmission signal and an actually transmitted signal, and is used as a performance indicator indicating signal quality degradation due to transmission system performance. Accordingly, when the EVM performance is the maximum, the corresponding EVM value may be the minimum.
  • the timing of the DL/UL synchronization control signal when the EVM performance is the maximum and the timing of the DL/UL synchronization control signal when the EVM performance is not the maximum will be described in detail as an example.
  • FIG. 4 is a diagram illustrating preferred timing of a DL/UL synchronization control signal according to the present invention
  • FIG. 5 is a diagram illustrating an undesirable timing of a DL/UL synchronization control signal, unlike FIG. 4 .
  • a 'DL signal' means a time interval in which the TDD repeater relays a DL signal received from the base station to the terminal, and the 'UL signal' refers to the UL signal received by the TDD repeater from the terminal to the base station. It may mean a relayed time interval.
  • the repeater preferably derives a DL/UL ON/OFF synchronization control signal, and the repeater transmits (relays) both the DL signal (transmitted from the base station) and the UL signal (transmitted from the terminal).
  • the EVM performance of the repeater can also be maximized.
  • the repeater did not properly derive the DL/UL ON/OFF synchronization control signal, and the repeater transmits some of the DL signal (transmitted from the base station) and the UL signal (transmitted from the terminal) Can't (relay) Accordingly, the EVM performance of the repeater is inevitably lowered.
  • the TDD repeater uses an AI system learned through deep learning based on a signal received from a neighboring base station to obtain a DL synchronization control signal capable of deriving an optimal EVM for a DL signal of a specific base station.
  • the base station is a fixed station, which is always fixed at a certain location, and the TDD frame structure of the base station has a certain pattern or is statically managed by a certain algorithm rather than being dynamically and variously changed due to the characteristics of the communication service provider.
  • the TDD repeater according to the present invention can acquire a DL synchronization control signal capable of deriving an optimal EVM for the DL signal of the specific base station through AI modeling, and through this, a DL relay operation with high performance can be implemented. have.
  • the AI system used by the TDD repeater according to the present invention may be learned through deep learning using additional signals received from one or more terminals located nearby.
  • the AI system by repeatedly performing the operation of deriving a UL synchronization control signal according to the TDD terminal signal and measuring the UL EVM performance for it, the AI system provides an optimal EVM for a specific UL signal. It is possible to obtain a UL synchronization control signal from which a value can be derived. At this time, considering that the entire TDD frame structure is managed by the base station, the obtained UL synchronization control signal may be utilized only when it does not collide with the DL synchronization control signal obtained by the above-described method.
  • FIG. 6 is a flowchart illustrating a method of operating a repeater according to the present invention.
  • an operation method to be described later controls a donor antenna for transmitting and receiving signals with a base station, a service antenna for transmitting and receiving signals with a terminal, and TDD antenna switching for the donor antenna and the service antenna, and the TDD It may be performed by a repeater including a controller for controlling the operation of the repeater.
  • the controller may include all of the first RF block, the digital block, the second RF block, the controller, and the AI-based synchronization acquisition module shown in FIG. 3 .
  • the operation method of the repeater according to the present invention includes a step of performing deep learning in consideration of DL/UL EVM performance (S610), and a step of obtaining DL/UL synchronization using an AI program (S620) and obtaining It may include a step (S630) of performing signal relay according to the DL/UL synchronization.
  • step S610 the repeater according to the present invention performs the downlink of the TDD repeater based on the downlink signal set for learning in which a plurality of radio propagation environments are respectively applied to the downlink signal for learning. Deep learning for deriving a downlink synchronization control signal having an error vector magnitude (EVM) minimum value may be performed.
  • EVM error vector magnitude
  • the plurality of radio propagation environments may include adjusted environments of two or more of the following environments.
  • step S610 the repeater according to the present invention, based on the uplink signal set for learning in which the plurality of radio propagation environments are respectively applied to the uplink signal for learning, the uplink EVM of the TDD repeater has a minimum value. Deep learning for deriving a link synchronization control signal may be performed.
  • the repeater may acquire DL/UL synchronization by using a signal received from the base station (or additionally received from the terminal) as an input value of the AI program.
  • the repeater using the artificial intelligence program learned through the deep learning described above, a downlink on (ON) synchronization control signal and a downlink off (OFF) synchronization control corresponding to the downlink signal received from the base station A signal may be output at a first time point and a second time point, respectively.
  • the repeater using the artificial intelligence program learned through the above-described deep learning, uplink on (ON) synchronization control signal and uplink off (OFF) synchronization control corresponding to the uplink signal received from the terminal A signal may be output at a third time point and a fourth time point, respectively.
  • the repeater may perform signal relay according to the obtained DL/UL synchronization. Specifically, the repeater transmits the downlink signal received from the base station to the first time point based on TDD antenna switching according to the downlink ON synchronization control signal and the downlink OFF synchronization control signal. It can be relayed to the terminal during the time interval from the second time point to the second time point. Alternatively, the repeater, based on the TDD antenna switching according to the uplink ON synchronization control signal and the uplink OFF synchronization control signal, transmits the uplink signal received from the terminal from the third time point. It can be relayed to the base station for a time interval up to the fourth time point.
  • the TDD repeater can acquire synchronization with the base station by using the operation method of the TDD repeater without detecting a synchronization signal transmitted from the base station.
  • the synchronization signal refers to a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) signal defined by the 3rd Generation Partnership Project (3GPP) 5G NR (5th Generation New Radio) standard. It may include at least one.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the repeater according to the present invention may include an L0 (Layer 0) repeater in which the interval delay is set to a value smaller than one symbol interval (eg, a maximum of 2us).
  • the length of one symbol interval may be set correspondingly according to the numerology (or subcarrier spacing (SCS)) set by the base station.
  • SCS subcarrier spacing
  • the computer program according to the present invention in combination with a computer, may be stored in a computer-readable recording medium in order to execute the operation methods of the various relay devices described above.
  • the above-described program is a computer such as C, C++, JAVA, machine language, etc. that the processor (CPU) of the computer can read through the device interface of the computer in order for the computer to read the program and execute the methods implemented as the program.
  • It may include code (Code) coded in the language.
  • code may include functional code related to a function defining functions necessary for executing the methods, etc. can do.
  • the code may further include additional information necessary for the processor of the computer to execute the functions or code related to memory reference for which location (address address) in the internal or external memory of the computer should be referenced. have.
  • the code uses the communication module of the computer to determine how to communicate with any other computer or server remotely. It may further include a communication-related code for whether to communicate and what information or media to transmit and receive during communication.
  • a software module may include random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any type of computer-readable recording medium well known in the art to which the present invention pertains.
  • RAM random access memory
  • ROM read only memory
  • EPROM erasable programmable ROM
  • EEPROM electrically erasable programmable ROM
  • flash memory hard disk, removable disk, CD-ROM, or It may reside in any type of computer-readable recording medium well known in the art to which the present invention pertains.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Computing Systems (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Computational Linguistics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Evolutionary Computation (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Artificial Intelligence (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

L'invention concerne un dispositif relais et son procédé de fonctionnement. Le procédé comprend les étapes consistant à : effectuer un apprentissage profond permettant de dériver un signal de commande de synchronisation de liaison descendante, dans lequel l'amplitude du vecteur d'erreur de liaison descendante (EVM) d'un relais TDD possède une valeur minimale, d'après des ensembles de signaux de liaison descendante pour un apprentissage obtenu en appliquant respectivement une pluralité d'environnements de propagation sans fil à des signaux de liaison descendante pour l'apprentissage ; émettre un signal de commande de synchronisation MARCHE de liaison descendante et un signal de commande de synchronisation ARRÊT de liaison descendante, qui correspondent à des signaux de liaison descendante reçus d'une station de base, à un premier instant et à un second instant à l'aide d'un programme d'intelligence artificielle appris au moyen de l'apprentissage profond ; et relayer les signaux de liaison descendante reçus de la station de base vers un terminal pour un intervalle de temps du premier instant au second instant d'après une commutation d'antenne TDD selon le signal de commande de synchronisation MARCHE de liaison descendante et le signal de commande de synchronisation ARRÊT de liaison descendante.
PCT/KR2022/005114 2021-04-14 2022-04-08 Dispositif relais permettant d'acquérir une synchronisation sur la base de l'intelligence artificielle, et son procédé de fonctionnement WO2022220499A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022580418A JP2023532052A (ja) 2021-04-14 2022-04-08 人工知能に基づいて同期を獲得する中継装置及びその中継装置の動作方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0048265 2021-04-14
KR1020210048265A KR102372870B1 (ko) 2021-04-14 2021-04-14 인공지능에 기반하여 동기를 획득하는 중계 장치 및 그 중계 장치의 동작 방법

Publications (1)

Publication Number Publication Date
WO2022220499A1 true WO2022220499A1 (fr) 2022-10-20

Family

ID=80816186

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/005114 WO2022220499A1 (fr) 2021-04-14 2022-04-08 Dispositif relais permettant d'acquérir une synchronisation sur la base de l'intelligence artificielle, et son procédé de fonctionnement

Country Status (3)

Country Link
JP (1) JP2023532052A (fr)
KR (1) KR102372870B1 (fr)
WO (1) WO2022220499A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102372870B1 (ko) * 2021-04-14 2022-03-10 주식회사 유큐브이 인공지능에 기반하여 동기를 획득하는 중계 장치 및 그 중계 장치의 동작 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060112270A (ko) * 2005-04-25 2006-10-31 에스케이 텔레콤주식회사 와이브로 시스템의 ｒｆ 중계기에서 이동통신 단말을이용한 동기신호 추출 방법
KR100777942B1 (ko) * 2006-06-12 2007-11-21 유파인테크놀러지스 주식회사 Ｒｆ신호검출 시간제어 및 스위칭 시간제어를 이용한ｔｄｄ용 ｒｆ중계기 및 그 중계제어방법
KR20080107795A (ko) * 2007-06-08 2008-12-11 삼성전자주식회사 중계국 수신부의 이득을 자동으로 제어하는 시분할 이중화방식의 광무선 중계시스템 및 이를 이용한 신호제어 방법
JP2018207237A (ja) * 2017-05-31 2018-12-27 株式会社東芝 通信中継システム及び方法
KR20190123929A (ko) * 2018-04-25 2019-11-04 삼지전자 주식회사 사업자 공용 중계기용 5ｇ ｔｄｄ 동기 신호 검출 방법
KR102372870B1 (ko) * 2021-04-14 2022-03-10 주식회사 유큐브이 인공지능에 기반하여 동기를 획득하는 중계 장치 및 그 중계 장치의 동작 방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102235969B1 (ko) 2019-04-26 2021-04-06 주식회사 씨에스 5g tdd 중계기의 동기 획득 장치 및 방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060112270A (ko) * 2005-04-25 2006-10-31 에스케이 텔레콤주식회사 와이브로 시스템의 ｒｆ 중계기에서 이동통신 단말을이용한 동기신호 추출 방법
KR100777942B1 (ko) * 2006-06-12 2007-11-21 유파인테크놀러지스 주식회사 Ｒｆ신호검출 시간제어 및 스위칭 시간제어를 이용한ｔｄｄ용 ｒｆ중계기 및 그 중계제어방법
KR20080107795A (ko) * 2007-06-08 2008-12-11 삼성전자주식회사 중계국 수신부의 이득을 자동으로 제어하는 시분할 이중화방식의 광무선 중계시스템 및 이를 이용한 신호제어 방법
JP2018207237A (ja) * 2017-05-31 2018-12-27 株式会社東芝 通信中継システム及び方法
KR20190123929A (ko) * 2018-04-25 2019-11-04 삼지전자 주식회사 사업자 공용 중계기용 5ｇ ｔｄｄ 동기 신호 검출 방법
KR102372870B1 (ko) * 2021-04-14 2022-03-10 주식회사 유큐브이 인공지능에 기반하여 동기를 획득하는 중계 장치 및 그 중계 장치의 동작 방법

Also Published As

Publication number Publication date
JP2023532052A (ja) 2023-07-26
KR102372870B1 (ko) 2022-03-10

Similar Documents

Publication Publication Date Title
WO2010095887A2 (fr) Procédé pour attribuer des signaux de référence d'une liaison retour dans un système de communication de relais, et procédé et appareil pour transmettre/recevoir des données au moyen dudit système
WO2010019017A2 (fr) Procédé d'annulation d'auto-brouillage et appareil de relais utilisant la même bande de fréquence dans un système de radiocommunication par ofdm
WO2014200212A1 (fr) Procédé de mesurage de canal autobrouilleur, et équipement d'utilisateur correspondant
WO2016085287A1 (fr) Procédé d'accès aléatoire et appareil pour celui-ci
WO2010050705A2 (fr) Procédé pour le fonctionnement d'une station relais dans un système de communication sans fil
WO2010085062A2 (fr) Procédé et appareil de transmission du signal concentré dans un système de communication sans fil comprenant une station de relais
WO2011077862A1 (fr) Appareil de relais, système de relais, procédé de relais, système de communication sans fil, et programme
WO2016143966A1 (fr) Procédé pour sélectionner un mode hd ou un mode fd dans un système de communication sans fil prenant en charge une technique fdr et appareil associé
WO2015174805A1 (fr) Procédé et appareil d'émission et de réception de signaux par un terminal, selon le mode dispositif à dispositif, dans un système de communication sans fil
WO2013019046A2 (fr) Procédé de mesure de qualité de canal dans un système d'accès sans fil et appareil correspondant
WO2010074489A2 (fr) Procédé et appareil de transmission de demande de planification dans un système de communication sans fil
WO2013022166A1 (fr) Procédé de traitement de signal de liaison montante, procédé de traitement de signal de liaison descendante et unité sans fil pour exécuter les procédés
WO2011059194A2 (fr) Procédé et dispositif pour transmettre un signal de référence et des informations de signal de référence dans un système d'envoi et de réception coopératif à antennes multiples
WO2017115925A1 (fr) Unité principale et système d'antenne distribué la comprenant
WO2012134123A2 (fr) Structure de sous-trame de liaison terrestre dans un système de communication mobile et son procédé de transmission d'informations
WO2014193152A1 (fr) Procédé d'attribution de ressources destiné à un dispositif pour communication sans fil et station de base associée
EP3243283A1 (fr) Procédé et appareil de limitation de la consommation d'énergie dans un système de communication mobile
WO2017159932A1 (fr) Procédé de fonctionnement sélectif en mode duplex dans un système de communication sans fil et appareil de communication associé
WO2017034106A1 (fr) Procédé pour changer un mode rs dans un environnement dans lequel une opération est réalisée par une technique fdr, et dispositif associé
WO2022220499A1 (fr) Dispositif relais permettant d'acquérir une synchronisation sur la base de l'intelligence artificielle, et son procédé de fonctionnement
WO2011055870A1 (fr) Procédé de fonctionnement et appareil de relais et station de base
WO2017171120A1 (fr) Dispositif de mise en correspondance de signaux de station de base, unité d'interface de station de base et système d'antenne distribué le comprenant
WO2015111960A1 (fr) Dispositif pour transmettre/recevoir des informations d'activation/désactivation de petite cellule lte
WO2015111961A1 (fr) Dispositif d'émission/réception de signal de référence de cellule de petite cellule lte
WO2020032694A1 (fr) Procédé et dispositif d'émission/réception de données dans un système de communication sans fil

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: 22788355

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022580418

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22788355

Country of ref document: EP

Kind code of ref document: A1