WO2018174530A1 - Procédé et appareil de commande de puissance de liaison montante dans un système de communication cellulaire sans fil - Google Patents

Procédé et appareil de commande de puissance de liaison montante dans un système de communication cellulaire sans fil Download PDF

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Publication number
WO2018174530A1
WO2018174530A1 PCT/KR2018/003242 KR2018003242W WO2018174530A1 WO 2018174530 A1 WO2018174530 A1 WO 2018174530A1 KR 2018003242 W KR2018003242 W KR 2018003242W WO 2018174530 A1 WO2018174530 A1 WO 2018174530A1
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Prior art keywords
time point
terminal
transmission
signal
time
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PCT/KR2018/003242
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English (en)
Korean (ko)
Inventor
여정호
최승훈
김태형
김영범
오진영
곽영우
박성진
Original Assignee
삼성전자 주식회사
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Priority claimed from KR1020170056949A external-priority patent/KR102309741B1/ko
Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to CN201880019826.9A priority Critical patent/CN110447271B/zh
Priority to US16/492,870 priority patent/US11032777B2/en
Priority to EP18772092.5A priority patent/EP3582559B1/fr
Publication of WO2018174530A1 publication Critical patent/WO2018174530A1/fr
Priority to US17/340,784 priority patent/US11611940B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters

Definitions

  • the present invention relates to a wireless communication system, and to a method and apparatus for controlling power of an uplink transmission signal. More specifically, the present invention relates to a method for controlling power in uplink transmission by a terminal that has received a delay reduction mode setting.
  • a 5G communication system or a pre-5G communication system is called a Beyond 4G network communication system or a post LTE system.
  • 5G communication systems are being considered for implementation in the ultra-high frequency (mmWave) band (eg, such as the 60 Gigabit (60 GHz) band).
  • mmWave ultra-high frequency
  • FD-MIMO massive array multiple input / output
  • FD-MIMO massive array multiple input / output
  • Array antenna, analog beam-forming, and large scale antenna techniques are discussed.
  • 5G communication systems have advanced small cells, advanced small cells, cloud radio access network (cloud RAN), ultra-dense network (ultra-dense network) , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation
  • cloud RAN cloud radio access network
  • ultra-dense network ultra-dense network
  • D2D Device to Device communication
  • wireless backhaul moving network
  • cooperative communication Coordinated Multi-Points (CoMP), and interference cancellation
  • FQAM Hybrid FSK and QAM Modulation
  • SWSC Slide Window Superposition Coding
  • ACM Advanced Coding Modulation
  • FBMC Fan Bank Multi Carrier
  • IoT Internet of Things
  • IoE Internet of Everything
  • M2M machine to machine
  • MTC Machine Type Communication
  • IT intelligent Internet technology services can be provided that collect and analyze data generated from connected objects to create new value in human life.
  • IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliances, advanced medical services, etc. through convergence and complex of existing information technology (IT) technology and various industries. It can be applied to.
  • a plurality of services may be provided to a user in a communication system, and in order to provide the plurality of services to a user, a method and an apparatus using the same are required to provide each service within a same time period according to characteristics. .
  • An object of the present invention is to propose a method and apparatus for performing power control for uplink transmission by a terminal set to a delay reduction mode.
  • a method of a terminal for solving the above problem includes the steps of receiving, by a terminal having a short processing time set, a downlink control information including an uplink grant from a base station, based on the downlink control information Determining a time point to transmit the link signal as a first time point or a second time point ahead of the first time point, determining an uplink transmission power to transmit an uplink signal based on the determined time point, and based on the determined transmission power Transmitting the link signal to a base station.
  • the terminal for solving the above problems the transceiver for transmitting and receiving a signal, and a terminal having a short processing time (short processing time) is configured to receive downlink control information including an uplink grant from the base station, and downlink
  • the time point for transmitting the uplink signal is determined as a first time point or a second time point ahead of the first time point based on the link control information, and the uplink transmission power for transmitting the uplink signal is determined based on the determined time point, and the determined transmission power is determined.
  • a control unit configured to transmit an uplink signal to the base station based on the.
  • a method of a base station for solving the above problems includes the steps of transmitting downlink control information including an uplink grant to a terminal having a short processing time set, and determined based on the downlink control information. Receiving an uplink signal from a terminal at a first time point or a second time point ahead of the first time point, the uplink transmission power of the uplink signal is determined by the terminal based on the determined time point.
  • the base station for solving the above problems, the transmission and reception unit for transmitting and receiving a signal, and transmits downlink control information including an uplink grant to a terminal that has a short processing time, the downlink control And a controller configured to receive an uplink signal from the terminal at a first time point determined based on the information or a second time point preceding the first time point, wherein the uplink transmission power of the uplink signal is determined by the terminal on the basis of the determined time point. do.
  • an efficient network operation is possible by providing a power control method for transmitting an uplink signal in a delay reduction mode operation of a base station and a terminal.
  • 1 is a diagram illustrating a downlink time-frequency domain transmission structure of an LTE or LTE-A system.
  • FIG. 2 is a diagram illustrating an uplink time-frequency domain transmission structure of an LTE or LTE-A system.
  • FIG. 3 is a diagram showing a state in which data for eMBB, URLLC, and mMTC are allocated in frequency-time resources in a communication system.
  • FIG. 4 is a diagram showing a state in which data for eMBB, URLLC, and mMTC are allocated in frequency-time resources in a communication system.
  • FIG. 5 is a diagram illustrating a structure in which one transport block is divided into several code blocks and a CRC is added according to an embodiment.
  • FIG. 6 is a diagram illustrating a method for uplink transmission by a terminal.
  • FIG. 7 is a diagram illustrating a second signal transmission timing collision according to the use of the fallback mode in the delay reduction mode setting.
  • FIG. 8 is a block diagram illustrating a structure of a terminal according to embodiments.
  • FIG. 9 is a block diagram illustrating a structure of a base station according to embodiments.
  • each block of the flowchart illustrations and combinations of flowchart illustrations may be performed by computer program instructions. Since these computer program instructions may be mounted on a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, those instructions executed through the processor of the computer or other programmable data processing equipment may be described in flow chart block (s). It creates a means to perform the functions. These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory. It is also possible for the instructions stored in to produce an article of manufacture containing instruction means for performing the functions described in the flowchart block (s).
  • Computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operating steps may be performed on the computer or other programmable data processing equipment to create a computer-implemented process to create a computer or other programmable data. Instructions for performing the processing equipment may also provide steps for performing the functions described in the flowchart block (s).
  • each block may represent a portion of a module, segment, or code that includes one or more executable instructions for executing a specified logical function (s).
  • logical function e.g., a module, segment, or code that includes one or more executable instructions for executing a specified logical function (s).
  • the functions noted in the blocks may occur out of order.
  • the two blocks shown in succession may in fact be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending on the corresponding function.
  • ' ⁇ part' used in the present embodiment refers to software or a hardware component such as an FPGA or an ASIC, and ' ⁇ part' performs certain roles.
  • ' ⁇ ' is not meant to be limited to software or hardware.
  • ' ⁇ Portion' may be configured to be in an addressable storage medium or may be configured to play one or more processors.
  • ' ⁇ ' means components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, procedures, and the like. Subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables.
  • components and the 'parts' may be combined into a smaller number of components and the 'parts' or further separated into additional components and the 'parts'.
  • the components and ' ⁇ ' may be implemented to play one or more CPUs in the device or secure multimedia card.
  • ' ⁇ part' may include one or more processors.
  • the wireless communication system has moved away from providing the initial voice-oriented service, for example, 3GPP High Speed Packet Access (HSPA), Long Term Evolution (LTE) or Evolved Universal Terrestrial Radio Access (E-UTRA), LTE-Advanced.
  • HSPA High Speed Packet Access
  • LTE Long Term Evolution
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • LTE-Advanced Advances in broadband wireless communication systems that provide high-speed, high-quality packet data services such as LTE-A, 3GPP2's High Rate Packet Data (HRPD), UMB (Ultra Mobile Broadband), and IEEE's 802.16e Doing.
  • 5G or NR (new radio) communication standard is being developed as a 5th generation wireless communication system.
  • At least one service of Enhanced Mobile Broadband (eMBB), Massive Machine Type Communications (mMTTC), and Ultra-Reliable and Low-latency Communications (URLLC) may be provided to a terminal in a wireless communication system including a fifth generation.
  • the services may be provided to the same terminal during the same time period.
  • the eMBB may be a high speed data transmission
  • the mMTC may be a service aimed at minimizing the terminal power and accessing multiple terminals
  • the URLLC may be a high reliability and a low latency.
  • the three services may be major scenarios in an LTE system or a system such as 5G / NR (new radio, next radio) after LTE.
  • 5G / NR new radio, next radio
  • a base station schedules data corresponding to an eMBB service to a terminal in a specific transmission time interval (TTI)
  • TTI transmission time interval
  • the eMBB data is already scheduled.
  • the generated URLLC data may be transmitted in the frequency band without transmitting part of the eMBB data in the transmitted frequency band.
  • the terminal scheduled for the eMBB and the terminal scheduled for the URLLC may be the same terminal or different terminals. In such a case, since the portion of the eMBB data that has already been scheduled and transmitted is not transmitted, the possibility of damaging the eMBB data increases.
  • the base station is a subject performing resource allocation of the terminal, and may be at least one of an eNode B, Node B, BS (Base Station), a radio access unit, a base station controller, or a node on a network.
  • the terminal may include a user equipment (UE), a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system capable of performing a communication function.
  • UE user equipment
  • MS mobile station
  • DL downlink
  • UL uplink of a signal transmitted from a terminal to a base station.
  • the following describes an embodiment of the present invention using an LTE or LTE-A system as an example, but the embodiment of the present invention may be applied to other communication systems having a similar technical background or channel form.
  • the fifth generation mobile communication technology (5G, new radio, NR) developed after LTE-A may be included in this.
  • the embodiment of the present invention may be applied to other communication systems through some modifications within the scope of the present invention without departing from the scope of the present invention by the judgment of those skilled in the art.
  • an LTE system employs an orthogonal frequency division multiplexing (OFDM) scheme in downlink (DL), and a single carrier frequency division multiple (SC-FDMA) in uplink (UL). Access) method is adopted.
  • the uplink refers to a radio link through which a terminal or user equipment (UE) or a mobile station (MS) transmits data or control signals to an eNode B or a base station (BS), and the downlink refers to a base station
  • the above-described multiple access scheme is generally designed such that orthogonality does not overlap the time-frequency resources for carrying data or control information for each user. By establishing and assigning, data or control information of each user can be distinguished.
  • the LTE system employs a hybrid automatic repeat request (HARQ) scheme in which the data is retransmitted in the physical layer when a decoding failure occurs in the initial transmission.
  • HARQ hybrid automatic repeat request
  • the receiver when the receiver does not correctly decode (decode) the data, the receiver transmits NACK (Negative Acknowledgement) informing the transmitter of the decoding failure so that the transmitter can retransmit the corresponding data in the physical layer.
  • NACK Negative Acknowledgement
  • the receiver combines the data retransmitted by the transmitter with previously decoded data to improve data reception performance.
  • the transmitter may transmit an acknowledgment (ACK) indicating the decoding success to the transmitter so that the transmitter may transmit new data.
  • ACK acknowledgment
  • the conventional LTE system transmits HARQ ACK or NACK information indicating whether the data transmission is successful in the uplink 3ms after receiving the downlink data to the base station.
  • HARQ ACK / NACK information of a physical downlink shared channel (PDSCH) received from a base station to a UE in subframe n is transmitted through a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) in subframe n + 4. Delivered to the base station.
  • a base station may transmit downlink control information (DCI) including uplink resource allocation information to a user equipment or request retransmission through a physical hybrid ARQ indicator channel (PHICH).
  • DCI downlink control information
  • PHICH physical hybrid ARQ indicator channel
  • the UE When the UE receives the scheduling in subframe n, the UE performs uplink data transmission in subframe n + 4. That is, PUSCH transmission is performed in subframe n + 4.
  • HARQ ACK / NACK transmission timing or PUSCH transmission timing depends on uplink-downlink subframe configuration, which is a predetermined rule. Is performed according to.
  • the HARQ ACK / NACK transmission timing or the PUSCH transmission timing are predetermined timings when the time required for signal processing between the base station and the terminal is about 3 ms. However, if the LTE base station and the terminal reduces the signal processing time by about 1 ms or 2 ms, it will be possible to reduce the delay time for data transmission.
  • the HARQ-ACK timing for the downlink data or the uplink for the uplink data grant according to the discovery region where the DCI is detected is detected.
  • the timing of the data transfer can vary. For example, when DCI is detected in the common search region, the operation is performed at n + 4 timing, and when DCI is detected in the terminal specific search region, the operation is performed at n + 3 timing.
  • the UE set to the delay reduction mode receives the scheduling in the common search region in one subframe and operates with n + 4 timing, and receives the scheduling in the UE specific search region in the next subframe and operates with n + 3 timing.
  • the base station delivers scheduling to a specific delay reduction mode setting terminal in a common search region in one subframe and operates with n + 4 timing, and then schedules that operate with n + 3 timing in the next subframe. By not transmitting the collision can be prevented.
  • FIG. 1 is a diagram illustrating a basic structure of a time-frequency domain, which is a radio resource region in which the data or control channel is transmitted in downlink in an LTE system or a similar system.
  • the horizontal axis represents the time domain and the vertical axis represents the frequency domain.
  • the minimum transmission unit in the time domain is an OFDM symbol, N symb (102) OFDM symbols are gathered to form one slot 106, two slots are gathered to form one subframe 105.
  • the length of the slot is 0.5ms and the length of the subframe is 1.0ms.
  • the radio frame 114 is a time domain section composed of 10 subframes.
  • the minimum transmission unit in the frequency domain is a subcarrier, and the bandwidth of the entire system transmission bandwidth is composed of a total of N BW 104 subcarriers. However, such specific values may be applied variably.
  • the basic unit of a resource in the time-frequency domain may be represented by an OFDM symbol index and a subcarrier index as a resource element (RE).
  • the resource block 108 (Resource Block; RB or PRB) may be defined as N symb 102 consecutive OFDM symbols in the time domain and N RB 110 consecutive subcarriers in the frequency domain. Accordingly, one RB 108 in one slot may include N symb x N RB REs 112.
  • the frequency-domain minimum allocation unit of data is the RB.
  • the data rate increases in proportion to the number of RBs scheduled to the UE.
  • the LTE system can define and operate six transmission bandwidths. In the case of an FDD system in which downlink and uplink are divided into frequencies, the downlink transmission bandwidth and the uplink transmission bandwidth may be different.
  • the channel bandwidth represents an RF bandwidth corresponding to the system transmission bandwidth. Table 1 below shows the correspondence between the system transmission bandwidth and the channel bandwidth defined in the LTE system. For example, an LTE system having a 10 MHz channel bandwidth may have a transmission bandwidth of 50 RBs.
  • the downlink control information may be transmitted within the first N OFDM symbols in the subframe.
  • N ⁇ 1, 2, 3 ⁇ . Accordingly, the N value may be variably applied to each subframe according to the amount of control information to be transmitted in the current subframe.
  • the transmitted control information may include a control channel transmission interval indicator indicating how many control information is transmitted over OFDM symbols, scheduling information for downlink data or uplink data, and information about HARQ ACK / NACK.
  • DCI downlink control information
  • DCI is defined according to various formats, and according to each format, whether or not the scheduling information (UL grant) for uplink data or the scheduling information (DL grant) for downlink data, and whether the DCI is a compact DCI with a small size of control information. It can indicate whether to apply spatial multiplexing using multiple antennas, whether to use DCI for power control.
  • DCI format 1 which is scheduling control information (DL grant) for downlink data, may include at least one of the following control information.
  • Resource allocation type 0/1 flag Indicates whether the resource allocation method is type 0 or type 1.
  • Type 0 uses the bitmap method to allocate resources in resource block group (RBG) units.
  • the basic unit of scheduling is an RB represented by time and frequency domain resources, and the RBG is composed of a plurality of RBs to become a basic unit of scheduling in a type 0 scheme.
  • Type 1 allows allocating a specific RB within the RBG.
  • Resource block assignment indicates an RB allocated for data transmission.
  • the resource to be expressed is determined by the system bandwidth and the resource allocation method.
  • Modulation and coding scheme indicates the modulation scheme used for data transmission and the size of a transport block, which is data to be transmitted.
  • HARQ process number indicates a process number of HARQ.
  • New data indicator indicates whether HARQ initial transmission or retransmission.
  • -Redundancy version indicates a redundant version of HARQ.
  • TPC Transmit Power Control
  • PUCCH Physical Uplink Control CHannel
  • PUCCH indicates a transmit power control command for PUCCH, which is an uplink control channel.
  • the DCI is a physical downlink control channel (PDCCH) (or control information, hereinafter referred to as used interchangeably) or an enhanced PDCCH (EPDCCH) (or enhanced control information), which is a downlink physical control channel through channel coding and modulation processes. Can be used interchangeably).
  • PDCCH physical downlink control channel
  • EPDCCH enhanced PDCCH
  • the DCI is scrambled with a specific Radio Network Temporary Identifier (RNTI) (or UE identifier) independently for each UE, and a CRC (cyclic redundancy check) is added, and after channel coding, each DCP is composed of independent PDCCHs. Is sent. In the time domain, the PDCCH is mapped and transmitted during the control channel transmission period. The frequency domain mapping position of the PDCCH is determined by the identifier (ID) of each terminal and can be transmitted by spreading over the entire system transmission band.
  • RNTI Radio Network Temporary Identifier
  • CRC cyclic redundancy check
  • the downlink data may be transmitted on a physical downlink shared channel (PDSCH) which is a physical channel for downlink data transmission.
  • PDSCH may be transmitted after the control channel transmission interval, and scheduling information such as specific mapping position and modulation scheme in the frequency domain is determined based on the DCI transmitted through the PDCCH.
  • the base station informs the UE of the modulation scheme applied to the PDSCH to be transmitted and the transport block size (TBS) of the data to be transmitted.
  • the MCS may consist of 5 bits or more or fewer bits.
  • the TBS corresponds to a size before channel coding for error correction is applied to data (transport block, TB) that the base station intends to transmit.
  • Modulation methods supported by the LTE system are Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (16QAM), and 64QAM.
  • QPSK Quadrature Phase Shift Keying
  • 16QAM Quadrature Amplitude Modulation
  • 64QAM 64QAM.
  • Each modulation order (Qm) corresponds to 2, 4, and 6. That is, 2 bits per symbol for QPSK modulation, 4 bits per symbol for 16QAM modulation, and 6 bits per symbol for 64QAM modulation.
  • modulation schemes of 256QAM or more may be used depending on system modifications.
  • FIG. 2 is a diagram illustrating a basic structure of a time-frequency domain, which is a radio resource region in which data or a control channel is transmitted in uplink in an LTE-A system.
  • the minimum transmission unit in the time domain is an SC-FDMA symbol 202, and N symb UL SC-FDMA symbols may be combined to form one slot 206. Two slots are gathered to form one subframe 205.
  • the minimum transmission unit in the frequency domain is a subcarrier, and the total system transmission bandwidth 204 consists of a total of N BW subcarriers. N BW may have a value proportional to the system transmission band.
  • the basic unit of a resource in the time-frequency domain may be defined as a SC-FDMA symbol index and a subcarrier index as a resource element (RE) 212.
  • the resource block pair 208 may be defined as N symb UL contiguous SC-FDMA symbols in the time domain and N sc RB contiguous subcarriers in the frequency domain. Therefore, one RB is composed of N symb UL x N sc RB Rs .
  • the minimum transmission unit for data or control information is in RB units.
  • PUCCH is mapped to a frequency domain corresponding to 1 RB and transmitted during one subframe.
  • PUCCH or PUSCH which is an uplink physical channel for transmitting HARQ ACK / NACK corresponding to a PDCCH / EPDDCH including a PDSCH or a semi-persistent scheduling release (SPS release), which is a physical channel for downlink data transmission.
  • SPS release semi-persistent scheduling release
  • the timing relationship of can be defined. For example, in an LTE system operating with frequency division duplex (FDD), HARQ ACK / NACK corresponding to a PDCCH / EPDCCH including a PDSCH or an SPS release transmitted in an n-4th subframe is transmitted to a PUCCH or PUSCH in an nth subframe. Can be sent.
  • FDD frequency division duplex
  • downlink HARQ adopts an asynchronous HARQ scheme in which data retransmission time is not fixed. That is, when the HARQ NACK is fed back from the terminal to the initial transmission data transmitted by the base station, the base station freely determines the transmission time of the retransmission data by the scheduling operation.
  • the UE may buffer the data determined to be an error as a result of decoding the received data for the HARQ operation, and then perform combining with the next retransmission data.
  • the TDD UL / DL configuration may be defined as shown in Table 2 below.
  • D indicates a downlink subframe
  • U indicates an uplink subframe
  • S indicates a special subframe.
  • the special subframe may also be divided from configuration 0 to 10, and uplink data transmission is not possible in the special subframe from special subframe configuration 0 to 9, and the special subframe configuration 10 is uplink data transmission or PUSCH in the special subframe. This setting is available for transmission.
  • HARQ ACK / NACK information of the PDSCH transmitted in the subframe nk is transmitted from the terminal to the base station through the PUCCH or the PUSCH in the subframe n, where k is the FDD or time division duplex (TDD) of the LTE system and its sub It may be defined differently according to the frame setting. For example, in the case of the FDD LTE system, k is fixed to 4. Meanwhile, in the TDD LTE system, k may be changed according to subframe configuration and subframe number. Also, when data is transmitted through a plurality of carriers, a value of k may be differently applied according to the TDD setting of each carrier. In the case of the TDD, the k value is determined according to the TDD UL / DL configuration as shown in Table 3 below.
  • the uplink HARQ adopts a synchronous HARQ scheme with a fixed data transmission time point. That is, a Physical Hybrid (Physical Uplink Shared Channel), which is a physical channel for transmitting uplink data, a PDCCH, which is a preceding downlink control channel, and a PHICH (Physical Hybrid), which is a physical channel through which downlink HARQ ACK / NACK corresponding to the PUSCH is transmitted.
  • the uplink / downlink timing relationship of the indicator channel may be transmitted and received according to the following rule.
  • k may be defined differently according to FDD or time division duplex (TDD) of LTE system and its configuration. For example, in the case of an FDD LTE system, k may be fixed to four. Meanwhile, in the TDD LTE system, k may be changed according to subframe configuration and subframe number. Also, when data is transmitted through a plurality of carriers, a value of k may be differently applied according to the TDD setting of each carrier. In the case of the TDD, the k value is determined according to the TDD UL / DL configuration as shown in Table 4 below.
  • HARQ-ACK information of the PHICH transmitted in subframe i is related to the PUSCH transmitted in subframe i-k.
  • k is given by 4. That is, HARQ-ACK information of the PHICH transmitted in subframe i in the FDD system is related to the PUSCH transmitted in subframe i-4.
  • the TDD system when the UE without EIMTA is configured, when only one serving cell is configured or the same TDD UL / DL configuration is set, when the TDD UL / DL configuration is 1 to 6, according to [Table 5] k value can be given.
  • the PHICH transmitted in subframe 6 may be HARQ-ACK information of the PUSCH transmitted in subframe 2 that is 4 subframes before.
  • UE that cannot transmit PUCCH and PUSCH at the same time is the power used for PUSCH transmission to be transmitted in subframe i in a specific serving cell c Can be calculated as follows.
  • a UE capable of simultaneously transmitting a PUCCH and a PUSCH may be used to transmit a PUSCH to be transmitted to a subframe i in a specific serving cell c. Can be calculated as follows.
  • Is a set power that the terminal can transmit to subframe i in serving cell c.
  • Is Is the linearly changed value of, Is the PUCCH transmission power The linearly changed value of.
  • Is a value made of parameters passed to higher signaling.
  • Is Can be passed from the parent to one of the values.
  • the UE may calculate a downlink pathloss estimate. Is a value that can be determined according to the control signal portion transmitted in the PUSCH.
  • absolute mode of power control Is a value that can be set according to a TPC command included in a DCI format for uplink scheduling such as DCI format 0/4 or DCI format 0A / 0B / 4A / 4B of PDCCH or EPDCCH.
  • the cumulative mode of power control Is set according to the TPC command included in the DCI format for uplink scheduling such as DCI format 0/4 or DCI format 0A / 0B / 4A / 4B of the PDCCH or EPDCCH or in the DCI format for power control such as DCI format 3 / 3A.
  • TDD UL / DL Settings 0 The method of setting the value can vary depending on the situation. For example, when the TDD UL / DL configuration is 0, if scheduling information of the PUSCH to be transmitted in subframe 2 or subframe 7 is received through PDCCH / EPDCCH where the LSB of the UL index of the uplink DCI format is 1 Is assumed to be 7. Otherwise, follow Table 6 above. Determine.
  • the description of the wireless communication system has been described with reference to the LTE system, and the present invention is not limited to the LTE system but can be applied to various wireless communication systems such as NR and 5G.
  • the k value when applied to another wireless communication system, the k value may be changed and applied to a system using a modulation scheme corresponding to FDD.
  • 3 and 4 illustrate how data for eMBB, URLLC, and mMTC, which are services considered in a 5G or NR system, are allocated in frequency-time resources.
  • data for eMBB, URLLC, and mMTC are allocated in the entire system frequency band 302. If the URLLC data 303, 305, 307 is generated while the eMBB 301 and the mMTC 309 are allocated and transmitted in a specific frequency band and need to be transmitted, a portion to which the eMBB 301 and the mMTC 309 are already allocated.
  • URLLC data 303, 305, and 307 may be transmitted without emptying or transmitting data. Since URLLC needs to reduce latency among the services, URLLC data may be allocated 303, 305, and 307 to a portion of the resource 301 to which the eMBB is allocated, and thus may be transmitted.
  • eMBB data may not be transmitted in the overlapping frequency-time resource, and thus transmission performance of the eMBB data may be lowered. That is, in the above case, eMBB data transmission failure due to URLLC allocation may occur.
  • the entire system frequency band 401 may be divided and used for transmitting services and data in each of the subbands 402, 404, and 406.
  • Information related to the subband configuration may be predetermined, and this information may be transmitted by the base station to the terminal through higher signaling. Alternatively, information related to the subbands may be arbitrarily divided by a base station or a network node to provide services to the terminal without transmitting subband configuration information.
  • the subband 402 is used for the eMBB data transmission 408, the subband 404 is the URLLC data transmission 410, 412, and 414, and the subband 406 is used for the mMTC data transmission 416.
  • the length of a transmission time interval (TTI) used for URLLC transmission may be shorter than the length of TTI used for eMBB or mMTC transmission.
  • the response of the information related to the URLLC can be sent faster than eMBB or mMTC, thereby transmitting and receiving information with a low delay.
  • FIG. 5 is a diagram illustrating a process in which one transport block is divided into several code blocks and a CRC is added.
  • one transport block (TB) to be transmitted in the uplink or the downlink may be added with a CRC 503 at the end or the beginning.
  • the CRC may have 16 bits or 24 bits or a fixed number of bits, or may have a variable number of bits depending on channel conditions, and may be used to determine whether channel coding is successful.
  • Blocks 501 and 503 added with TB and CRC may be divided into a plurality of codeblocks (CBs) 507, 509, 511 and 513 (505).
  • the code block may be divided by a predetermined maximum size, and in this case, the last code block 513 may be smaller than other code blocks, or may have a length equal to that of other code blocks by inserting 0, a random value, or 1. I can match it.
  • CRCs 517, 519, 521, and 523 may be added to the divided code blocks, respectively (515).
  • the CRC may have 16 bits or 24 bits or a fixed number of bits, and may be used to determine whether channel coding is successful.
  • the CRC 503 added to the TB and the CRCs 517, 519, 521, and 523 added to the code block may be omitted according to the type of channel code to be applied to the code block. For example, when the LDPC code, not the turbo code, is applied to the code block, the CRCs 517, 519, 521, and 523 to be inserted for each code block may be omitted. However, even when LDPC is applied, the CRCs 517, 519, 521, and 523 may be added to the code block as it is. In addition, CRC may be added or omitted even when polar codes are used.
  • the eMBB service described below is called a first type service, and the eMBB data is called first type data.
  • the first type of service or the first type of data is not limited to the eMBB but may also be applicable to a case where high-speed data transmission is required or broadband transmission is required.
  • the URLLC service is referred to as a second type service, and the URLLC data is referred to as second type data.
  • the second type service or the second type data is not limited to URLLC, but may also correspond to a case in which low latency is required, high reliability transmission is required, or other systems in which low latency and high reliability are simultaneously required.
  • the mMTC service is referred to as type 3 service, and the data for mMTC is referred to as type 3 data.
  • the third type service or the third type data is not limited to the mMTC and may correspond to a case where a low speed, wide coverage, or low power is required.
  • the first type service includes or does not include the third type service.
  • the structure of the physical layer channel used for each type to transmit the three types of services or data may be different. For example, at least one of a length of a transmission time interval (TTI), an allocation unit of frequency resources, a structure of a control channel, and a data mapping method may be different.
  • the terms physical channel and signal in the conventional LTE or LTE-A system may be used.
  • the contents of the present invention can be applied in a wireless communication system other than the LTE and LTE-A systems.
  • the embodiment defines the transmission and reception operations of the terminal and the base station for the first type, the second type, the third type of service or data transmission, and the terminals receiving different types of service or data scheduling in the same system. Suggests specific ways to work together.
  • the first type, the second type, and the third type terminal refer to terminals which have received one type, second type, third type service or data scheduling, respectively.
  • the first type terminal, the second type terminal, and the third type terminal may be the same terminal or may be different terminals.
  • At least one of a PHICH, an uplink scheduling grant signal, and a downlink data signal is referred to as a first signal.
  • at least one of the uplink data signal for the uplink scheduling grant and the HARQ ACK / NACK for the downlink data signal is called a second signal.
  • the response signal of the terminal corresponding to the first signal may be a second signal.
  • the service type of the first signal may be at least one of eMBB, URLLC, and mMTC, and the second signal may also correspond to at least one of the services.
  • PUCCH format 0 or 4 and PHICH may be a first signal
  • a second signal corresponding thereto may be a PUSCH.
  • the PDSCH may be the first signal
  • the PUCCH or PUSCH including HARQ ACK / NACK information of the PDSCH may be the second signal.
  • a PDCCH / EPDCCH including an aperiodic CSI trigger may be a first signal
  • a corresponding second signal may be a PUSCH including channel measurement information.
  • the base station when the base station transmits the first signal in the n-th TTI, assuming that the terminal transmits the second signal in the n + k-th TTI, the base station informs the terminal when to transmit the second signal Is equivalent to telling the value of k.
  • the base station to inform the terminal of the timing to transmit the second signal is offset Equivalent to giving the value a.
  • the offset may be defined by various methods such as n + 3 + a and n + 5 + a instead of n + 4 + a, and the n + 4 + a value referred to in the present invention below may also be offset in various ways. It can be defined.
  • the contents of the present invention will be described based on the FDD LTE system, but can be applied to a TDD system and an NR system.
  • the upper signaling is a signal transmission method transmitted from the base station to the terminal using the downlink data channel of the physical layer or from the terminal to the base station using the uplink data channel of the physical layer, and RRC signaling or PDCP signaling. Or MAC control element (MAC CE).
  • MAC CE MAC control element
  • the method for transmitting the second signal may be possible in various ways. For example, after the UE receives the downlink data PDSCH, the timing of transmitting HARQ ACK / NACK information corresponding to the PDSCH to the base station is the method described in the present invention, but the PUCCH format selected, the PUCCH resource selection or The method of mapping HARQ ACK / NACK information to the PUSCH may follow the conventional LTE method.
  • a normal mode is a mode using a first signal and a second signal transmission timing used in conventional LTE and LTE-A systems, and in the normal mode, a signal of about 3 ms including a TA is used. It is possible to secure processing time.
  • the second signal for the first signal received by the terminal in subframe n is transmitted by the terminal in subframe n + 4.
  • the transmission may be referred to as n + 4 timing transmission. If the second signal for the first signal transmitted in subframe n + k is scheduled to be transmitted at n + 4 timing, the second signal means that the second signal is transmitted in subframe n + k + 4.
  • n + 4 timing in TDD means that a subframe in which a second signal for the first signal transmitted in subframe n can be transmitted fastest follows n + 4, and follows a predetermined timing relationship. Can mean.
  • the subframe n + 4 may not be used for uplink transmission, it may be impossible for the terminal to transmit the second signal in the subframe n + 4. Therefore, it is necessary to define a timing relationship for the second signal transmission, and when defining the relationship, the minimum timing may be referred to as n + 4 timing, which assumes a subframe n + 4.
  • n + 3 timing in TDD means that a subframe in which a second signal for the first signal transmitted in subframe n can be transmitted fastest follows n + 3, and follows a predetermined timing relationship. Can mean.
  • n + 3 timing it is necessary to define a timing relationship for the second signal transmission, and when defining the relationship, the minimum timing may be referred to as n + 3 timing, which assumes a subframe n + 3.
  • the latency reduction mode is a mode that enables the transmission timing of the second signal with respect to the first signal to be equal to or faster than the normal mode, and may reduce the delay time.
  • timing can be controlled in various ways.
  • the delay reduction mode may be used in combination with a reduced processing time mode.
  • the delay reduction mode may be set to a terminal that supports the delay reduction mode through higher signaling.
  • a second signal for the first signal transmitted in subframe n may be transmitted before subframe n + 4.
  • the terminal in which the delay reduction mode is set may transmit a second signal for the first signal transmitted in subframe n in subframe n + 3.
  • the transmission may be referred to as n + 3 timing transmission.
  • the second signal for the first signal transmitted in subframe n + 1 is scheduled to be transmitted at n + 3 timing
  • the second signal is transmitted in subframe n + 4.
  • a second signal for a first signal transmitted in subframe n + 2 is scheduled to be transmitted at an n + 3 timing
  • the second signal is transmitted in subframe n + 5. That is, if the second signal for the first signal transmitted in subframe n + k is scheduled to be transmitted at n + 3 timing, the second signal means that the second signal is transmitted in subframe n + k + 3.
  • the present invention description will be made based on the case where the lengths of the transmission time intervals (TTI) used in the normal mode and the delay reduction mode are the same. However, the present invention may be applicable to the case where the TTI in the normal mode and the TTI in the delay reduction mode are different.
  • the second signal when the first signal is a PDSCH, the second signal may be a PUCCH or a PUSCH including HARQ-ACK information of the PDSCH.
  • the first signal when the first signal is a PDCCH or EPDCCH including PHICH or uplink scheduling information, the second signal may be a PUSCH for the uplink scheduling.
  • the first signal when the first signal is a PDCCH / EPDCCH including an aperiodic CSI trigger, the second signal may be a PUSCH including channel measurement information.
  • the base station When the delay reduction mode is set to the upper signaling to the terminal, the base station has an uncertainty when the upper signaling is transmitted to the terminal, so a method of always transmitting a second signal at a predetermined timing may be necessary regardless of the setting of the base station. have. For example, even if the base station sets the delay reduction mode to transmit n + 3 timing to the terminal, the base station cannot guarantee that the terminal knows exactly when the delay reduction mode setting is valid. Accordingly, there may be a need for a method in which the base station can transmit n + 4 timing transmission to the terminal during the configuration. That is, a method of performing n + 4 timing transmission may be required regardless of the delay reduction mode setting.
  • a method of performing n + 4 timing transmission regardless of the delay reduction mode setting may be used in combination with a fall-back mode transmission. Accordingly, when the fallback mode transmission is performed, the base station considers that the second signal is transmitted at the n + 4 timing instead of the n + 3 or n + 2 timing, and performs the uplink reception operation.
  • the fallback mode transmission is 1) when the first signal transmission is delivered in a specific downlink control information (DCI) format, 2) when DCI for the first signal transmission is delivered in a specific search space, 3)
  • DCI downlink control information
  • the DCI may be delivered using at least one predetermined RNTI value in one way.
  • the cell-specific search space (CSS) and the UE-specific search space (USS), which may be the search region, may be defined as follows.
  • a control channel element (CCE) number to which a downlink control signal of aggregation level L and a control channel may be mapped in subframe k may be calculated as follows.
  • x mod y may refer to the remainder of x divided by y.
  • M (L) means the number of downlink control channels of aggregation level L.
  • m may be a natural number from 0 to M (L)
  • m' m in CSS
  • m' m + M (L) n CI in USS
  • n CI may be a carrier indicator field value.
  • M (L) value may be defined as shown in Table 7.
  • the CCE number at which the control signal starts to be mapped is determined as 0, 4, 8, 12 at aggregation level 4, and 0, 8 at aggregation level 8.
  • USS can be changed according to the RNTI value that serves as a unique number of the terminal.
  • the delay of the base station is performed.
  • the second signal may be transmitted at n + 4 timing at all times. That is, in the above method, even if the terminal is configured to transmit the second signal at the n + 3 timing, when the downlink scheduling is performed in the DCI format 1A, the terminal transmits the second signal at the n + 4 timing.
  • the DCI for the first signal transmission when the DCI for the first signal transmission is delivered in a specific search space, using the fallback mode transmission may include, for example, a DCI in a cell common search space;
  • the second signal When the DCI is transmitted in the region set with CSS), the second signal may always be transmitted at n + 4 timing with respect to the delay mode reduction setting of the base station for the first signal related to the DCI. That is, in the above method, even if the terminal is configured to transmit the second signal at the n + 3 timing, when the DCI is transmitted in the cell common search region, the terminal transmits the second signal at the n + 4 timing.
  • the fallback mode transmission may include, for example, setting an RNTI for the fallback mode transmission to the UE in advance and using the RNTI. Therefore, when the base station generates the PDCCH or EPDCCH and delivers the DCI, the second signal may always be transmitted at n + 4 timing with respect to the delay mode reduction setting of the base station for the first signal associated with the DCI. That is, in the above method, even if the UE is configured to transmit the second signal at n + 3 timing, if the PDCCH or EPDCCH decoding succeeds using the RNTI value, the terminal transmits the second signal at n + 4 timing. .
  • FIG. 6 is a diagram illustrating a method for uplink transmission by a terminal when the base station sets a delay reduction mode to the terminal and transmits a first signal (601).
  • the terminal confirms whether the first signal transmission is the fallback mode scheduling (603), and if the fallback mode transmission is correct in the confirmation (603), delay reduction mode
  • the second signal is transmitted at timing n + 4 regardless of the setting (605). If the check 603 does not transmit the fallback mode, the second signal is transmitted at a timing determined by the delay reduction mode setting, for example, n + 3 timing or n + 2 timing (607).
  • a transmission mode in which the fastest transmission timing of the second signal with respect to the first signal transmitted in subframe n is subframe n + 4 may be referred to as a normal mode.
  • the transmission mode in which the earliest transmission timing of the second signal is subframe n + 2 or n + 3 may be referred to as a delay reduction mode or a signal processing time reduction mode.
  • the subframe n + 4, which is a reference transmission timing for distinguishing the normal mode and the delay reduction mode, is changed to classify based on another timing, and thus the present invention may be applied.
  • the description will be made based on a method of operating in the fallback mode with n + 4 timing. That is, when the DCI for transmitting the first signal is transmitted in a specific search space, using the fallback mode transmission may include, for example, an area in which the DCI is set as a common search space (CSS).
  • the second signal may always be transmitted at an n + 4 timing with respect to the delay mode reduction setting of the base station for the first signal associated with the DCI.
  • the terminal transmits the second signal at the n + 4 timing.
  • the DCI is transmitted in a UE-specific search space (USS)
  • the second signal is transmitted at an n + 3 timing as set.
  • the DCI format that attempts detection varies according to a transmission mode. For example, when the transmission mode 4 is set, the UE attempts to detect DCI format 1A in CSS and USS, and detects DCI format 2 in USS for PDSCH reception using C-RNTI. Can be. Therefore, in the above example, when the delay reduction mode is set to n + 3 timing, the fallback mode to n + 4 timing occurs when the terminal detects DCI format 1A in CSS.
  • the DCI format 1A relates to downlink data transmission scheduling, and in uplink data scheduling, DCI format 0 may be used for fallback mode transmission.
  • FIG. 7 is a diagram illustrating one example that may occur when scheduling is performed in a fallback mode to a delay reduction mode terminal.
  • the terminal set to the delay reduction mode receives the scheduling 707 in the common search area 703 in any one subframe 701 and performs the fallback mode to operate at the n + 4 timing, and the next subframe ( In operation 721, if the UE-specific search region 725 receives the scheduling 727 and operates with n + 3 timing, HARQ-ACK transmission or PUSCH transmissions 711 and 731 for two scheduling are performed in the same subframe 743. Conflicts that must be made can occur.
  • the base station delivers scheduling to a specific delay reduction mode setting terminal in a common search area in one subframe and operates with n + 4 timing, and then n + 3 timing in the next subframe.
  • the collision can be prevented by not passing the scheduling that is running.
  • the first search region may be mixed with a cell-specific search space (CSS), and the second search region may be mixed with a UE-specific search space (USS).
  • CCS cell-specific search space
  • USS UE-specific search space
  • detection and decoding may be used interchangeably.
  • the fallback mode in the present invention is used when the base station sets the delay reduction mode to the terminal, and the fallback mode is not used in the normal mode.
  • the second signal corresponding to the downlink control signal may be HARQ-ACK for downlink data transmission scheduled by the control signal or uplink data for uplink data transmission scheduling of the control signal. Can be.
  • the uplink data transmission may be mixed with the PUSCH, and the uplink control signal transmission may be mixed with the PUCCH.
  • the PUSCH may include data to be transmitted in uplink, channel measurement information, HARQ-ACK for downlink data transmission, and a scheduling request bit.
  • the PUCCH includes HARQ-ACK for channel data transmission, channel measurement information, and scheduling request. Bits may be included.
  • setting the absolute value mode for power control may mean that the Accumulation-enabled parameter is set to off in the upper signaling, and setting the accumulator mode to the Accumulation-enabled parameter in the upper signaling means that the Accumulation-enabled parameter is set to on. can do.
  • the first embodiment describes a method of setting and controlling power control to an absolute value mode for uplink data transmission by a terminal set to a delay reduction mode.
  • UE that cannot transmit PUCCH and PUSCH at the same time is the power used for PUSCH transmission to be transmitted in subframe i in a specific serving cell c Can be calculated as follows.
  • a UE capable of simultaneously transmitting a PUCCH and a PUSCH may be used to transmit a PUSCH to be transmitted to a subframe i in a specific serving cell c. Can be calculated as follows.
  • Is a set power that the terminal can transmit to subframe i in serving cell c.
  • Is Is the linearly changed value of, Is PUCCH transmit power The linearly changed value of.
  • Is the number of PRBs allocated to use for PUSCH transmission in subframe i in the serving cell c.
  • Is a value made of parameters passed to higher signaling.
  • Is Can be passed from the parent to one of the values.
  • the UE may calculate a downlink pathloss estimate. Is a value that can be determined according to the control signal portion transmitted in the PUSCH.
  • Timing from above May be delivered by higher signaling. For example, if the minimum signal processing time is 2 ms, that is, the delay reduction terminal is set to n + 3 timing, Can be assumed to be 3. From above 3 means that the power of the PUSCH to be transmitted in subframe i is determined according to the power control command transmitted in i-3.
  • TDD UL / DL configuration 0 and special subframe configuration 0 to 9 The method of setting the value can vary depending on the situation. For example, when the TDD UL / DL configuration is 0, if scheduling information of a PUSCH to be transmitted in subframe 4 or subframe 9 is received through PDCCH / EPDCCH where LSB of UL index of uplink DCI format is 1 Is assumed to be 4. Otherwise, follow Table 8 above. Determine.
  • the following table 12 or table 13 is used instead of the above table 8. The value can be determined.
  • the method applied in the present embodiment is a method when the terminal set to the delay reduction mode receives the uplink scheduling or the downlink scheduling in a manner other than the fallback mode. That is, the operation when the terminal is scheduled to operate with n + 3 timing is described. If the terminal is scheduled in fallback mode to follow the n + 4 timing, Not described above It operates in the conventional way using. That is, having 3 values based on FDD system Not having a value of 4 By using Can be determined.
  • TDD UL / DL configuration 0 and 6 use different numeric values in some cases. It will be possible to define.
  • the second embodiment describes a method of operating and setting power control to a cumulative mode for uplink transmission by a terminal set to a delay reduction mode.
  • UE that cannot transmit PUCCH and PUSCH at the same time is the power used for PUSCH transmission to be transmitted in subframe i in a specific serving cell c Can be calculated as follows.
  • a UE capable of simultaneously transmitting a PUCCH and a PUSCH may be used to transmit a PUSCH to be transmitted to a subframe i in a specific serving cell c. Can be calculated as follows.
  • the UE may calculate a downlink pathloss estimate.
  • Is a value that can be set according to a TPC command included in a DCI format for power control such as DCI format 3 / 3A of PDCCH or EPDCCH.
  • Method 2 above Is set to cumulative mode in power control, It can be calculated as From above Is 4 in the FDD system, and may be determined according to Table 6 in the TDD system.
  • Timing from above May be delivered by higher signaling. For example, if the minimum signal processing time is 2 ms, that is, the delay reduction terminal is set to n + 3 timing, Can be assumed to be 3. From above 3 means that the power of the PUSCH to be transmitted in subframe i is determined according to the power control command transmitted in i-3.
  • TDD UL / DL Settings 0 The method of setting the value can vary depending on the situation. For example, when the TDD UL / DL configuration is 0, if scheduling information of a PUSCH to be transmitted in subframe 4 or subframe 9 is received through PDCCH / EPDCCH where LSB of UL index of uplink DCI format is 1 Is assumed to be 4. Otherwise, follow Table 8 above. Determine.
  • TDD UL / DL configuration 0 and special subframe configuration 0 to 9 The method of setting the value can vary depending on the situation. For example, when the TDD UL / DL configuration is 0, if scheduling information of a PUSCH to be transmitted in subframe 4 or subframe 9 is received through PDCCH / EPDCCH where LSB of UL index of uplink DCI format is 1 Is assumed to be 4. Otherwise, follow Table 8 above. Determine.
  • the method applied in the present embodiment is a method when the terminal set to the delay reduction mode receives the uplink scheduling or the downlink scheduling in a manner other than the fallback mode. That is, the operation when the terminal is scheduled to operate with n + 3 timing is described. If the terminal is scheduled in fallback mode to follow the n + 4 timing, Not described above It operates in the conventional way using. That is, having 3 values based on FDD system Not having a value of 4 By using Can be determined.
  • TDD UL / DL configuration 0 and 6 use different numeric values in some cases. It will be possible to define.
  • the third embodiment describes a method of receiving information on uplink power control when a terminal set to a delay reduction mode receives downlink control information.
  • a UE configured with a delay reduction mode at an n + 3 timing receives a power control DCI such as DCI format 3 / 3A in subframe n, and uses uplink scheduling such as DCI 0/4 in subframe n + 1.
  • a power control DCI such as DCI format 3 / 3A in subframe n
  • uplink scheduling such as DCI 0/4 in subframe n + 1.
  • the UE controls power according to uplink scheduling DCI such as DCI 0/4 received in subframe n + 1.
  • the UE shall use the delta provided in DCI format 0/4.
  • the UE shall use the delta provided in DCI format 0/4.
  • the UE shall use the delta provided in DCI format 0/4.
  • the UE shall use the delta provided in DCI format 0/4 for PUSCH transmission in subframe .
  • Is 3 in the FDD system and is determined according to Table 8 in the TDD system.
  • Is 4 in the FDD system and is determined according to Table 6 in the TDD system.
  • the power control method for the PUSCH transmission has been described. It may be possible to apply to determine the power for the sounding reference signal (SRS) or PUCCH transmission using. That is, the third embodiment may be applied to control power for uplink transmission of the terminal set to the delay reduction mode.
  • SRS sounding reference signal
  • the operation of the delay reduction mode has been described to use n + 3 timing, but this is merely to provide a specific example to help explain the present invention, and is not intended to limit the scope of the present invention. That is, in the present invention, the delay reduction mode may be applicable to setting the second signal to be transmitted at an n + 2 or n + 3 timing.
  • the transmitter, the receiver, and the processor of the terminal and the base station are illustrated in FIGS. 8 and 9, respectively.
  • FIGS. 8 and 9 In order to perform the operation of the control signal detection method according to the search area from the first embodiment to the third embodiment, there is shown a method of transmitting and receiving between the base station and the terminal. Each should operate according to the embodiment.
  • FIG. 8 is a block diagram illustrating an internal structure of a terminal according to an exemplary embodiment of the present invention.
  • the terminal of the present invention may include a terminal receiver 802, a terminal transmitter 806, and a terminal processor 804.
  • the terminal receiver 802 and the terminal may be collectively called a transmitter / receiver in the embodiment of the present invention.
  • the transceiver may transmit and receive a signal with the base station.
  • the signal may include control information and data.
  • the transmission and reception unit may be composed of an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for low noise amplifying and down-converting the received signal.
  • the transceiver may receive a signal through a wireless channel, output the signal to the terminal processor 804, and transmit a signal output from the terminal processor 804 through a wireless channel.
  • the terminal processing unit 804 may control a series of processes so that the terminal can operate according to the above-described embodiment of the present invention.
  • the terminal receiver 802 receives a signal including a control signal, and the terminal processor 804 may determine power for uplink transmission according to the received control information. Thereafter, the terminal transmitter 806 transmits the second signal using power for uplink transmission determined by the processor.
  • the base station of the present invention may include a base station receiver 901, a base station transmitter 905, and a base station processor 903.
  • the base station receiver 901 and the base station transmitter 905 may be collectively referred to as a transceiver unit in an embodiment of the present invention.
  • the transceiver may transmit and receive a signal with the terminal.
  • the signal may include control information and data.
  • the transmission and reception unit may be composed of an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for low noise amplifying and down-converting the received signal.
  • the transceiver may receive a signal through a wireless channel, output the signal to the base station processor 903, and transmit a signal output from the base station processor 903 through a wireless channel.
  • the base station processing unit 903 may control a series of processes to operate the base station according to the embodiment of the present invention described above. For example, the power for uplink transmission may be checked and the appropriate transmission power may be determined and informed to the terminal.

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Abstract

La présente invention concerne une technique de communication, et un système associé, qui fusionne un système de communication 5G avec la technologie Internet des objets (IdO) de façon à prendre en charge des débits de transmission de données supérieurs à ceux des systèmes 4G. La présente invention peut être appliquée à des services intelligents (par exemple, des services liés aux maisons intelligentes, aux bâtiments intelligents, aux villes intelligentes, aux voitures intelligentes ou connectées, aux soins de santé, à l'enseignement numérique, au commerce de détail, à la sécurité et à la sûreté, ou analogues) sur la base de la technologie de communication 5G et de la technologie associée à l'IdO. La présente invention concerne un système de communication sans fil, et concerne un procédé et un appareil qui commandent la puissance d'un signal d'émission de liaison montante. De manière plus spécifique, l'invention concerne un procédé dans lequel la puissance dans une émission de liaison montante est commandée par un terminal qui a reçu des réglages de mode de réduction de retard.
PCT/KR2018/003242 2017-03-23 2018-03-20 Procédé et appareil de commande de puissance de liaison montante dans un système de communication cellulaire sans fil WO2018174530A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880019826.9A CN110447271B (zh) 2017-03-23 2018-03-20 用于无线蜂窝通信系统中上行链路功率控制的方法和装置
US16/492,870 US11032777B2 (en) 2017-03-23 2018-03-20 Method and apparatus for uplink power control in wireless cellular communication system
EP18772092.5A EP3582559B1 (fr) 2017-03-23 2018-03-20 Procédé et appareil de commande de puissance de liaison montante dans un système de communication cellulaire sans fil
US17/340,784 US11611940B2 (en) 2017-03-23 2021-06-07 Method and apparatus for uplink power control in wireless cellular communication system

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KR10-2017-0037123 2017-03-23
KR20170037123 2017-03-23
KR1020170056949A KR102309741B1 (ko) 2017-03-23 2017-05-04 무선 셀룰라 통신 시스템에서 상향링크 전력제어 방법 및 장치
KR10-2017-0056949 2017-05-04

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US16/492,870 A-371-Of-International US11032777B2 (en) 2017-03-23 2018-03-20 Method and apparatus for uplink power control in wireless cellular communication system
US17/340,784 Continuation US11611940B2 (en) 2017-03-23 2021-06-07 Method and apparatus for uplink power control in wireless cellular communication system

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Publication number Priority date Publication date Assignee Title
US11089615B2 (en) 2018-11-13 2021-08-10 Electronics And Telecommunications Research Institute Method for data retransmission in wireless communication system and apparatus for the same
CN114041307A (zh) * 2019-05-02 2022-02-11 株式会社Ntt都科摩 用户终端以及无线通信方法
CN113994741A (zh) * 2019-05-10 2022-01-28 株式会社Ntt都科摩 用户终端以及无线通信方法
US11316767B2 (en) 2020-03-02 2022-04-26 Nokia Technologies Oy Communication of partial or whole datasets based on criterion satisfaction

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