WO2018084515A1 - 무선 셀룰라 통신 시스템에서 데이터 전송 방법 및 장치 - Google Patents
무선 셀룰라 통신 시스템에서 데이터 전송 방법 및 장치 Download PDFInfo
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Definitions
- the present invention relates to a wireless communication system, and more specifically, a transport block that is a data transmission unit is divided into one or more sub transport blocks, and the sub transport block is divided into a code block that is a unit in which one or more channel codes are performed.
- a method and apparatus are provided.
- a 5G communication system or a pre-5G communication system is called a system after a 4G network (Beyond 4G Network) or a system after an LTE system (Post LTE).
- 5G communication systems are being considered for implementation in the ultra-high frequency (mmWave) band (eg, such as the 60 Gigabit (60 GHz) band).
- FD-MIMO massive array multiple input / output
- FD-MIMO massive array multiple input / output
- FD-MIMO massive array multiple input / output
- 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
- D2D Device to Device communication
- D2D Device to Device communication
- CoMP Coordinated Multi-Points
- Hybrid FSK and QAM Modulation FQAM
- SWSC Slide Window Superposition Coding
- ACM Advanced Coding Modulation
- FBMC Fan Bank Multi Carrier
- NOMA non orthogonal multiple access
- SCMA sparse code multiple access
- 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 wireless communication system in particular, the conventional LTE system, when transmitting data, transmission is carried out in units of a transport block (TB).
- the TB is divided into a plurality of code blocks (CBs), and channel coding is performed in units of CBs.
- CBs code blocks
- channel coding is performed in units of CBs.
- retransmission is performed after the initial transmission, it is made in units of TBs, and there is a problem that entire TBs should be retransmitted even if only one CB fails to decode.
- an object of the present invention is to define a sub-transport block (sub-TB) for a case where only a part of a TB needs retransmission.
- sub-TB sub-transport block
- CB provides a method for confirming the transmission success in the receiver and a method for the base station to set the CRC length.
- the sub-TB defined in the present invention is a virtual concept, and in reality, only a CRC added for each virtual sub-TB may be actually considered.
- the present invention includes receiving information on a sub transport block from a base station, determining a sub transport block based on the information on the sub transport block and the number of code blocks constituting a scheduled transport block and the base station to the And transmitting data through a sub transport block, wherein the sub transport block is a code block bundle including at least one code block.
- the determining of the sub transport block may include partitioning the scheduled transport block into the at least one code block and the information on the sub transport block and the number of the code blocks constituting the scheduled transport block. Grouping at least one code block into the sub transport block.
- the information on the sub transport block includes the number of sub transport blocks constituting the scheduled transport block, and the step of determining the sub transport block includes the sub transport based on the number of the sub transport blocks and the number of the code blocks.
- the block can be determined.
- the sub transport blocks may be determined based on the number of code blocks.
- the sub transport blocks may be determined based on the number of sub transport blocks.
- the determining of the sub transport block may determine the sub transport block based on at least one of a transmission time interval (TTI) of the data, the size of the scheduled transport block, or control information received from the base station. .
- TTI transmission time interval
- the present invention provides a method of transmitting information on a sub transport block to a terminal and at least one sub transport block determined based on the information on the sub transport block and the number of code blocks constituting a scheduled transport block. And receiving data, wherein the sub transport block is a code block bundle including at least one code block.
- Information on the sub transport block may be transmitted to the terminal through higher signaling.
- the present invention is a transmission and reception unit for transmitting and receiving a signal; And controlling the transceiver to receive information on a sub transport block from a base station, and determine a sub transport block based on the information on the sub transport block and the number of code blocks constituting a scheduled transport block. And a control unit for controlling the transceiver to transmit data through the sub transport block, wherein the sub transport block is a code block bundle including at least one code block.
- the control unit may divide the scheduled transport block into the at least one code block, and group the at least one code block into the sub transport block based on the information on the sub transport block and the number of the code blocks. have.
- the information on the sub transport block includes the number of sub transport blocks constituting the transport block, and the controller may determine the sub transport block based on the number of the sub transport blocks and the number of the code blocks.
- the controller may determine the sub transport blocks based on the number of code blocks.
- the controller may determine the sub transport blocks based on the number of the sub transport blocks.
- the controller may determine the sub transmission block based on at least one of a transmission time interval (TTI) of the data, the size of the scheduled transmission block, or control information received from the base station.
- TTI transmission time interval
- the present invention is a transmission and reception unit for transmitting and receiving a signal; And controlling the transceiver to transmit information about a sub transport block to a terminal, and data through the sub transport block determined based on the information about the sub transport block from the terminal and the number of code blocks constituting a scheduled transport block. It includes a control unit for controlling the transceiver to receive, wherein the sub transport block provides a base station characterized in that the code block bundle containing at least one code block.
- the sub-TB is introduced to provide an operation method capable of partial retransmission of the TB, thereby reducing unnecessary data transmission by efficiently transmitting the base station and the terminal.
- 1A is a diagram illustrating a downlink time-frequency domain transmission structure of an LTE or LTE-A system.
- 1B is a diagram illustrating an uplink time-frequency domain transmission structure of an LTE or LTE-A system.
- FIG. 1C is a diagram illustrating data for eMBB, URLLC, and mMTC allocated to frequency-time resources in a communication system.
- FIG. 1D is a view showing how data for eMBB, URLLC, and mMTC are allocated in frequency-time resources in a communication system.
- 1E illustrates a structure in which one transport block is divided into a plurality of code blocks and a CRC is added according to an embodiment.
- 1F is a diagram illustrating a structure in which an outer code is applied and coded according to an embodiment.
- 1G is a block diagram illustrating the application of an outer code according to an embodiment.
- FIG. 1H illustrates an example of a structure for a method of configuring a sub-TB and a CB and adding a CRC according to an embodiment of the present invention.
- FIG. 1I illustrates an example of a structure for a method of configuring a sub-TB and a CB and adding a CRC according to an embodiment of the present invention.
- FIG. 1J illustrates an example of a structure for a method of configuring a sub-TB and a CB and adding a CRC according to an embodiment of the present invention.
- 1K is a diagram illustrating an example of a structure for a method of configuring a sub-TB and a CB and adding a CRC according to an embodiment of the present invention.
- 1L is a diagram illustrating a procedure of a transmitting end according to embodiment 1-2 of the present invention.
- 1M is a diagram illustrating a procedure of a receiver according to embodiment 1-2 of the present invention.
- 1N is a diagram illustrating a procedure of a transmitter according to a second embodiment of the present invention.
- 1o is a diagram illustrating a procedure of a receiving end according to a second embodiment of the present invention.
- 1P is a diagram illustrating a procedure of a receiving end according to a fourth embodiment of the present invention.
- 1Q is a diagram illustrating a procedure of a transmitting end according to a fourth embodiment of the present invention.
- 1r is a diagram illustrating an internal structure of a terminal according to embodiments of the present invention.
- 1s is a diagram illustrating an internal structure of a base station according to embodiments of the present invention.
- a 5G communication system or a pre-5G communication system is called a system after a 4G network (Beyond 4G Network) or a system after an LTE system (Post LTE).
- 5G communication systems are being considered for implementation in the ultra-high frequency (mmWave) band (eg, such as the 60 Gigabit (60 GHz) band).
- FD-MIMO massive array multiple input / output
- FD-MIMO massive array multiple input / output
- FD-MIMO massive array multiple input / output
- 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
- D2D Device to Device communication
- D2D Device to Device communication
- CoMP Coordinated Multi-Points
- 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.
- the new 5G communication NR (New Radio access technology) is designed to allow various services to be freely multiplexed in time and frequency resources. Accordingly, waveform / numerology and reference signals are dynamically changed according to the needs of the corresponding service. Can be assigned freely.
- optimized data transmission by measuring channel quality and interference amount is important. Therefore, accurate channel state measurement is essential.
- the frequency resource group (FRG) can be divided and measured. Requires support for a subset of.
- the types of supported services can be divided into categories such as Enhanced Mobile Broadband (eMBB), Massive Machine Type Communications (mMTTC), and Ultra-Reliable and Low-latency Communications (URLLC).
- eMBB is a high-speed data transmission
- mMTC is a terminal for minimizing the power of the terminal and accessing a large number of terminals
- URLLC is a service aimed at high reliability and low latency. Different requirements may be applied depending on the type of service applied to the terminal.
- 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. .
- 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.
- 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.
- Uplink refers to a radio link through which a user equipment (UE) or mobile station (MS) transmits data or a control signal to a base station (eNode B or base station (BS)), and the downlink means a base station is a terminal.
- UE user equipment
- MS mobile station
- eNode B or base station (BS) base station
- data or control information of each user is classified by assigning and operating such that time-frequency resources for carrying data or control information for each user do not overlap each other, that is, orthogonality is established. do.
- 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
- FIG. 1A illustrates 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.
- 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, in which N symb (1a-02) OFDM symbols are gathered to form one slot 1a-06, and two slots are gathered to form one subframe (1a-05). Configure The length of the slot is 0.5ms and the length of the subframe is 1.0ms.
- the radio frame 1a-14 is a time domain unit composed of 10 subframes.
- the minimum transmission unit in the frequency domain is a subcarrier, and the bandwidth of the entire system transmission bandwidth consists of N BW (1a-04) subcarriers.
- the basic unit of 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 1a-08 (Resource Block; RB or PRB) includes N symb (1a-02) consecutive OFDM symbols in the time domain and N RB (1a-10) consecutive subcarriers in the frequency domain. Is defined as
- one RB (1a-08) is N symb x N RB It consists of two REs (1a-12).
- the minimum transmission unit of data is the RB unit.
- the data rate increases in proportion to the number of RBs scheduled to the UE.
- the LTE system defines and operates 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 1a shows a correspondence relationship between a system transmission bandwidth and a channel bandwidth defined in an LTE system. For example, an LTE system with a 10 MHz channel bandwidth consists of 50 RBs in transmission bandwidth.
- the downlink control information may be transmitted in 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 scheduling information (UL grant) for uplink data or scheduling information (DL grant) for downlink data, and whether the size of control information is a compact DCI. It may indicate whether to apply spatial multiplexing using multiple antennas, whether or not it is a 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 notifies 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 the size before channel coding for error correction is applied to data to be transmitted by the base station.
- Modulation schemes supported by the LTE system are Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (16QAM), and 64QAM, and 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.
- QPSK Quadrature Phase Shift Keying
- 16QAM Quadrature Amplitude Modulation
- Qm modulation order
- modulation schemes of 256QAM or more may be used depending on system modifications.
- FIG. 1B illustrates 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 horizontal axis represents the time domain and the vertical axis represents the frequency domain.
- the minimum transmission unit in the time domain is an SC-FDMA symbol 1b-02, and N symb UL SC-FDMA symbols may be combined to form one slot 1b-06. Two slots are gathered to form one subframe 1b-05.
- the minimum transmission unit in the frequency domain is a subcarrier, and the entire system transmission bandwidth 1b-04 is composed of a total of N BW subcarriers. N BW may have a value proportional to the system transmission band.
- the basic unit of resource in the time-frequency domain may be defined as a SC-FDMA symbol index and a subcarrier index as a resource element (RE, 1b-12).
- the resource block pair 1b-08 (RB pair) may be defined as N symb UL contiguous SC-FDMA symbols in the time domain and N scRB 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 is 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. Is 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 buffers the data determined to be an error as a result of decoding the received data for the HARQ operation, and then performs combining with the next retransmission data.
- k is defined differently according to FDD or time division duplex (TDD) and subframe configuration of the LTE system.
- k is defined differently according to FDD or time division duplex (TDD) and subframe configuration of the LTE system.
- TDD time division duplex
- k is fixed to 4.
- k may be changed according to subframe configuration and subframe number.
- 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 is fixed by the following rule.
- the UE When the UE receives the PDCCH including the uplink scheduling control information transmitted from the base station or the PHICH in which downlink HARQ ACK / NACK is transmitted in subframe n, the UE transmits uplink data corresponding to the control information in subframe n + k. Transmit through PUSCH.
- k is defined differently according to FDD or time division duplex (TDD) of LTE system and its configuration. 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.
- the terminal When the base station transmits an uplink scheduling grant or downlink control signal and data to the terminal in subframe n of the FDD LTE system, the terminal receives the uplink scheduling grant or downlink control signal and data in subframe n. First, when the uplink scheduling approval is received in subframe n, the UE transmits uplink data in subframe n + 4.
- the UE If the downlink control signal and data are received in subframe n, the UE transmits HARQ ACK or NACK for the downlink data in subframe n + 4. Therefore, the UE can receive uplink scheduling approval, transmit uplink data, or receive downlink data, and be ready to transmit HARQ ACK or NACK is 3 ms corresponding to three subframes.
- the PHICH When the terminal receives the PHICH carrying downlink HARQ ACK / NACK from the base station in subframe i, the PHICH corresponds to the PUSCH transmitted by the terminal in subframe i-k.
- k is defined differently according to the FDD or TDD of LTE system and its configuration. 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.
- 1C and 1D show 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 1c-00.
- URLLC data (1c-03, 1c-05, 1c-07) occurs and transmission is necessary.
- 01) and mMTC (1c-09) can transmit the URLLC data (1c-03, 1c-05, 1c-07) without emptying or transmitting the portion already allocated.
- URLLC data may be allocated (1c-03, 1c-05, 1c-07) to a part of the resource (1c-01) to which the eMBB is allocated.
- 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 1d-00 may be divided and used to transmit service and data in each subband 1d-02, 1d-04, and 1d-06.
- 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.
- subband 1d-02 is used for eMBB data transmission
- subband 1d-04 is URLLC data transmission
- subband 1d-06 is used for mMTC data transmission.
- 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. 1E illustrates a process in which one transport block is divided into a plurality of code blocks and a CRC is added.
- one transport block (TB) to be transmitted in an uplink or a downlink may include a CRC (1e-03) 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.
- the blocks 1e-01 and 1e-03 to which TB and CRC are added may be divided into a plurality of codeblocks CBs 1e-07, 1e-09, 1e-11, and 1e-13 (1e). -05).
- the code block may be divided by a predetermined maximum size.
- the last code blocks 1e-13 may be smaller in size than other code blocks.
- the length of the last code block 1e-13 may be equal to the length of other code blocks by adding 0, a random value, or 1.
- CRCs 1e-17, 1e-19, 1e-21, and 1e-23 may be added to the divided code blocks, respectively (1e-15).
- 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 CRCs (1e-03) added to the TB and the CRCs (1e-17, 1e-19, 1e-21, 1e-23) added to the code block may be omitted according to the type of channel code to be applied to the code block. It may be.
- the CRCs 1e-17, 1e-19, 1e-21, and 1e-23 to be inserted for each codeblock may be omitted.
- the CRCs 1e-17, 1e-19, 1e-21, and 1e-23 may be added to the code block as it is.
- CRC may be added or omitted even when polar codes are used.
- FIG. 1F is a diagram illustrating a method of transmitting and using an outer code
- FIG. 1G is a block diagram illustrating a structure of a communication system using the outer code.
- bits or symbols 1f-04 at the same position in each code block are encoded with a second channel code, thereby parity bits or symbols 1f- 06) may be generated (1f-02).
- CRCs may be added to the respective code blocks and the parity code blocks generated by the second channel code encoding (1f-08 and 1f-10).
- the addition of the CRC may vary depending on the type of channel code. For example, when the turbo code is used as the first channel code, the CRCs (1f-08 and 1f-10) are added, but each code block and parity code blocks may be encoded by the first channel code encoding. have.
- the data to be transmitted passes through the second channel coding encoder 1g-09.
- the channel code used for the second channel coding for example, a reed-solomon code, a BCH code, a raptor code, a parity bit generation code, or the like may be used.
- the bits or symbols passing through the second channel coding encoder 1g-09 pass through the first channel coding encoder 1g-11.
- Channel codes used for the first channel coding include convolutional code, LDPC code, Turbo code, and polar code.
- the receiver sequentially processes the first channel coding decoder 1g-15 and the second channel coding decoder 1g-17 based on the received signals. Can be operated.
- the first channel coding decoder 1g-15 and the second channel coding decoder 1g-17 perform operations corresponding to the first channel coding encoder 1g-11 and the second channel coding encoder 1g-09, respectively. can do.
- the first channel coding encoder 1g-11 and the first channel coding decoder 1g-05 are used in the transceiver, respectively, the second channel coding encoder and the second channel coding. Decoders are not used. Even when the outer code is not used, the first channel coding encoder 1g-11 and the first channel coding decoder 1g-05 may be configured in the same manner as when the outer code is 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
- 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.
- the base station is a subject performing resource allocation of the terminal, and may be at least one of an eNode B, a Node B, a base station (BS), a wireless 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.
- 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.
- a transmission time interval may mean a unit in which a control signal and a data signal are transmitted, or may mean a unit in which a data signal is transmitted.
- the transmission time interval is a subframe that is a time unit of 1 ms.
- the transmission time interval in the uplink may mean a unit in which a control signal or a data signal is sent or a unit in which a data signal is transmitted.
- the transmission time interval in the uplink of the existing LTE system is a subframe that is the same time unit of 1 ms as the downlink.
- a signal is transmitted and received in units of subframes having a Transmission Time Interval (TTI) of 1 ms.
- TTI Transmission Time Interval
- a short-TTI UE having a transmission time interval shorter than 1 ms may be supported.
- a transmission time interval may be shorter than 1 ms.
- Short-TTI terminals are expected to be suitable for services such as voice over LTE (VoLTE) services and remote control where latency is important.
- the short-TTI terminal is expected to be a means for realizing a mission critical Internet of Things (IoT) on a cellular basis.
- IoT mission critical Internet of Things
- the terms physical channel and signal in the conventional LTE or LTE-A system may be used interchangeably with data or control signals.
- the PDSCH is a physical channel through which normal-TTI data is transmitted, the PDSCH may be referred to as normal-TTI data in the present invention.
- the uplink scheduling grant signal and the downlink data signal are referred to as a first signal.
- the uplink data signal for the uplink scheduling grant and the HARQ ACK / NACK for the downlink data signal are referred to as a second signal.
- the signal transmitted from the base station to the terminal, if the signal expects a response from the terminal may be a first 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 belong to a category such as eMBB, mMTC, URLLC, and the like.
- the TTI length of the first signal means the length of time that the first signal is transmitted.
- the TTI length of the second signal means the length of time that the second signal is transmitted.
- the second signal transmission timing is information on when the terminal transmits the second signal and when the base station receives the second signal, and may be referred to as a second signal transmission / reception timing.
- a TDD system when there is no mention of a TDD system, it generally means an FDD system.
- the method and apparatus of the present invention in an FDD system may be applied to a TDD system according to a simple modification.
- higher signaling is a signal transmission method transmitted from a base station to a terminal using a downlink data channel of a physical layer, or from a terminal to a base station using an uplink data channel of a physical layer, and is an RRC signaling or a MAC control element. It may also be referred to as a (CE) control element.
- the transmitting end may refer to a base station in downlink and a terminal in uplink.
- the receiving end may mean a terminal in downlink and a base station in uplink.
- the sub-TB in the present invention may be considered as a virtual concept and may be a unit representing a bundle of one or more CBs.
- one transport block is divided into several code blocks (CBs)
- one transport block is divided into several sub-transport blocks; sub-TB) and divides one sub transport block into several code blocks.
- FIG. 1H illustrates a method of dividing one TB into M sub-TBs (1h-01) and dividing each sub-TB into one or more CBs (1h-05).
- 1h-11 is one TB transmitted from the upper layer to the physical layer. In the physical layer, the TB 1h-11 is regarded as data.
- CRC may be added to the TB (1h-13).
- TB (1h-11) and a cyclic generator polynomial may be used to generate the CRC (1h-13), and the cyclic generator polynomial may be defined in various ways.
- cyclic generator polynomial g CRC24A (D) D24 + D23 + D18 + D17 + D14 + D11 + D10 + D7 + D6 + D5 + D4 + D3 + D + 1 for a 24-bit CRC
- the length L has been described as an example of 24, the length may be determined in various lengths such as 12, 16, 24, 32, 40, 48, and 64.
- the TB is divided into M sub-TBs (1h-01). That is, the CRC added to the TB is divided into M sub-TBs 1h-21 and 1h-23.
- CRCs 1h-33 and 1h-37 are added (1h-03) to each of the divided sub-TBs 1h-31 and 1h-35.
- a CRC having a different length or a different cyclic generator polynomial may be used as the CRC added to the sub-TB.
- the divided sub-TB and the added CRC are divided into several CBs 1h-41, 1h-42, 1h-45, and 1h-47 (1h-05).
- the divided CBs 1h-51, 1h-53, 1h-55, and 1h-57 have CRCs 1h-52, 1h-54, 1h-56, and 1h-58 respectively added (1h-07). .
- FIG. 1I, 1J and 1K are diagrams illustrating a modified method of the method provided in FIG. 1H, respectively.
- the CRC of TB (1h-13), the CRC of sub-TB (1h-33, 1h-37), and the CRC of CB (1h-52, 1h-54, 1h-56, 1h-58) are all used.
- FIG. 1I no CRC is added to the TB. This may be to lower the CRC overhead.
- FIG. 1J the CRC is not added to the sub-TB, and in FIG. 1K, the CRC is not added to the CB.
- Embodiment 1-1 describes a method of determining the number M of sub-TBs or delivering M information to a terminal in Embodiment 1.
- the number M of sub-TBs may be determined by various methods and known to a base station or a terminal. For example, 1) data is divided according to the length of the scheduled TTI, 2) downlink control information indicated by a specific bit of DCI, 3) the method according to RRC signaling, 4) a method determined according to the TB size, 5) A method determined according to the total number of code blocks, and one or more of the methods 1) to 5) may be combined.
- the M value is determined according to the length of the TTI in which data is scheduled according to 1).
- the M value may be determined using the number of TTIs for which partial retransmission can be included in the TTI length when initial transmission is performed. Can be. For example, assuming that the initial transmission is a slot of 7 OFDM symbols and the minislot may consist of 2 symbols or 3 symbols, one slot may include 3 minislots of 2 symbols or 3 symbols. If so, M may be determined to be 3.
- one TB can be composed of three sub-TBs.
- M may be determined to be the largest square of two closest to or less than three or the smallest square of two greater than three. That is, in the above case, M may be determined to be 2 or 4. That is, if M is determined according to the initially scheduled TTI length, it may be modified and applied in various ways.
- the base station informs the UE of an M value using specific bits in DCI, which is a downlink control signal.
- the control signal may be for downlink scheduling or uplink scheduling.
- 3) is a method for the base station to inform the terminal of the M value using RRC signaling.
- the base station may transmit the M value information to the terminal by the RRC signaling.
- 2) and 3) may be combined to inform M value through RRC signaling, and DCI may indicate whether to use partial retransmission or to send HARQ-ACK bits per sub-TB using 1 bit. .
- the M value may be determined by comparing the TBS when initial transmission is performed with a specific value.
- Z be the maximum CB size that can be one CB
- B be the size of TB.
- the CRC length added to the sub-TB is represented as L_sub_TB (L_ sub-TB )
- the CRC length added to the CB is represented by L_CB (L CB )
- the CRC length added to the TB is represented by L_TB (L TB)
- L TB Let's express it.
- let's denote the number of CBs as C and the number of sub-TBs as M.
- the X value may vary depending on the size of one sub-TB.
- the method of determining the M value according to the total number of code blocks according to 5) is a method of determining the M value by dividing the number of code blocks at the time of initial transmission by a specific number. That is, it may be to allow as many code blocks as possible in one sub-TB.
- Embodiment 1-2 provides a detailed example of the method of dividing TB into sub-TB and CB in Embodiment 1.
- the present embodiment 1-2 is an example of the first embodiment, and may be applied in various modified ways.
- the M value is not determined according to the TBS or the number of code blocks, but may be an example in which the M value is given according to the TTI length or a specific bit of the DCI or the RRC signaling.
- N_1 and N_2 may be greater than 0 promised in the transmission and reception period in advance, and mean the CRC length of the CB and sub-TB, respectively.
- the sub-TB may be considered as a virtual concept and may be a unit representing a bundle of one or more CBs.
- the total code block number C may be determined as follows.
- one CB may be included in one sub-TB, but may be modified and used as below in a manner that at least X CBs are included in one sub-TB.
- the CRC length, the number of sub-TBs, and the number of CBs of sub-TBs and CBs can be determined, and the number of bits B 'of data to be transmitted can be determined.
- the following describes how to divide the TB to be transmitted into sub-TB and CB.
- crk means the k-th bit of the r-th CB.
- K + is a minimum value included in a specific set among K values satisfying B' ⁇ C ⁇ K (the specific set may be a set including values promised between transceivers).
- K ⁇ is the maximum value included in a specific set of K values satisfying K ⁇ K + (the specific set may be a set including values promised between transceivers).
- M + M-(MN + -C)
- the above example is an example of filling in the front when 0 or NULL is filled, which can be easily modified and applied to the case of filling in the middle or last.
- FIG. 1L is a flow chart illustrating a method of a transmitter that divides one TB into one or more sub-TBs and one or more CBs, and adds a CRC of a sub-TB and a CRC of a CB.
- FIG. 1m is a flowchart illustrating a method of a receiving end that distinguishes one or more sub-TBs and one or more CBs in decoding one TB, and checks whether decoding is successful using the CRC of the sub-TB and the CRC of the CB after decoding. to be.
- the second embodiment is a method of configuring a CRC of a code block by providing a length information of a CRC included in configuring one code block to a terminal, and determining the length of the CRC according to the information provided by the base station. It will be described with reference to Figure 1o.
- the base station transmits length information of the CRC to be attached to each CB to the terminal.
- the CRC length transmission method may include 1) transmission to the UE through RRC signaling, 2) transmission in which partial retransmission technology is applied, or 3) information on the CRC length in a specific bit of DCI.
- a CRC of about 32 bits or 48 bits may be applied instead of 24 bits.
- the partial retransmission technique of 2) may be applied when a variable such as an RRC variable partial_retransmission indicating partial retransmission is set to active or DCI information indicating partial retransmission is delivered.
- the transmission of information about the CRC length in a specific bit of DCI of 3) may convey whether to use a short length CRC or a long length CRC in a specific bit of DCI.
- the short length CRC may mean a length of 16 bits or 24 bits
- the long length CRC may mean a length of 32 bits, 40 bits, or 48 bits.
- FIG. 1N is a flowchart illustrating a procedure of a transmitter for providing CRC length information and transmitting using the CRC of the predetermined length.
- the base station and the terminal promise each other information of the CRC length or the base station delivers the information to the terminal (1n-02).
- the CRC of the predetermined length is calculated using data bits and added to the code block (1n-04). In the CRC calculation, a predetermined cyclic generator polynomial may be used.
- the code block to which the CRC is added is encoded into a channel code and transmitted (1n-06).
- FIG. 1O is a flow chart illustrating a procedure of a receiving end providing CRC length information and confirming whether reception is successful using the CRC of the predetermined length.
- the base station and the terminal promise each other information of the CRC length or the base station delivers the information to the terminal (1o-02).
- the receiver performs channel code decoding in units of code blocks (1o-04). After decoding the channel code, the CRC of the predetermined length is checked to determine whether the decoding is successful (1o-06).
- the cyclic generator polynomial used to generate the CRC may be used for the CRC check.
- the third embodiment provides a method in which a CRC length is determined according to a service type of data to be transmitted.
- the base station and the terminal may assume that the CRC length is set differently according to whether the provided service is eMBB, URLLC, or mMTC.
- the CRC added to CB is 24 bit
- CB added to CB is 32 bit or 40 bit
- CRC added to CB is 16 bit or 24 bit or 32 bit. It can be promised that the CRC length is set differently according to the type of. This may be because HARQ-ACK reliability required for each service is different.
- FIGS. 1P and 1Q a method in which a receiver configures HARQ-ACK information in sub-TB units, feeds back to a transmitting end, and the transmitting end performs retransmission in sub-TB units according to the HARQ-ACK information is shown in FIGS. 1P and 1Q. Provided by reference.
- 1p is a flowchart illustrating a procedure of a receiver for transmitting HARQ-ACK information in sub-TB units.
- the base station and the terminal share information of the number M value of the sub-TB and the CRC length (1p-02).
- the shared information may be transmitted to the terminal by the RRC signaling or the DCI, etc., or may share the information according to a predetermined method.
- the receiver After decoding the channel code, the receiver checks the CRC of the CB and the CRC of the sub-TB to confirm whether the specific sub-TB is successfully transmitted (1p-04).
- the receiver delivers HARQ-ACK feedback information indicating whether the sub-TB is transmitted (1p-06).
- the HARQ-ACK feedback information may include as many bits as the number of sub-TBs, or it may be possible to transmit sub-TBs in a small number of bits.
- the receiver may determine that retransmission is performed for the sub-TB that failed in the initial transmission when retransmission is received, and may perform decoding of the sub-TB for which the initial transmission failed.
- FIG. 1q is a flowchart illustrating a procedure of a transmitter for retransmitting only a part of sub-TB when receiving and retransmitting HARQ-ACK information in sub-TB units.
- the base station and the terminal share the information of the number M value of the sub-TB and the CRC length (1q-02).
- the shared information may be transmitted to the terminal by the RRC signaling or the DCI, etc., or may share the information according to a predetermined method.
- the transmitting end receives HARQ-ACK feedback information from the receiving end and determines which sub-TB has failed to transmit (1q-04).
- the HARQ-ACK feedback information may include as many bits as the number of sub-TBs, or it may be possible to transmit sub-TBs in a small number of bits. Subsequently, only the sub-TB determined as NACK is newly transmitted and retransmission is performed (1q-06).
- a transmitter, a receiver, and a processor of the terminal and the base station are shown in FIGS. 1r and 1s, respectively. Transmitting and receiving methods of a base station and a terminal are shown to determine a method of inserting a CRC in sub-TB and CB and TB units from the first embodiment to the fourth embodiment and to perform an operation according thereto.
- the receiver, the processor, and the transmitter of the terminal should each operate according to the embodiment.
- Figure 1r is a block diagram showing the internal structure of a terminal according to an embodiment of the present invention.
- the terminal of the present invention may include a terminal receiver 1r-00, a terminal transmitter 1r-04, and a terminal processor 1r-02.
- the terminal receiver 1r-00 and the terminal may collectively be referred to as 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 1r-02, and transmit a signal output from the terminal processor 1r-02 through the wireless channel.
- the terminal processor 1r-02 may control a series of processes such that the terminal may operate according to the above-described embodiment of the present invention. For example, when the terminal receiving unit 1r-00 receives the downlink data signal from the base station, and the terminal processing unit 1r-02 does, it determines whether the decoding is successful by checking the CRC of the CB and the sub-TB. Can be controlled. Thereafter, the terminal transmitter 1r-04 may transmit HARQ-ACK feedback information in sub-TB units to the base station.
- the base station of the present invention may include a base station receiver 1s-01, a base station transmitter 1s-05, and a base station processor 1s-03.
- the base station receiver 1s-01 and the base station transmitter 1s-05 may be collectively referred to as a transmitter / receiver.
- 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 1s-03, and transmit a signal output from the terminal processor 1s-03 through the wireless channel.
- the base station processing unit 1s-03 may control a series of processes so that the base station can operate according to the above-described embodiment of the present invention.
- the base station processor 1s-03 may determine the number M value of the sub-TB and control to generate the information to be delivered to the terminal.
- the base station transmitter 1s-05 adds and transmits a CRC in units of CB and sub-TB when transmitting data, and the base station receiver 1s-01 receives HARQ-ACK information in units of sub-TB from the terminal. .
- the base station processing unit 1s-03 generates downlink control information (DCI) or higher signaling signals including the number of sub-TBs and the CRC length. Can be controlled.
- DCI downlink control information
- the DCI or higher signaling may indicate whether the number of sub-TBs and CRC length information are included in the scheduled signal.
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Abstract
Description
Channel bandwidth BWChannel [MHz] | 1.4 | 3 | 5 | 10 | 15 | 20 |
Transmission bandwidth configuration NRB | 6 | 15 | 25 | 50 | 75 | 100 |
Claims (15)
- 무선 통신 시스템에서 단말의 데이터 전송 방법에 있어서,기지국으로부터 서브 전송 블록에 대한 정보를 수신하는 단계;상기 서브 전송 블록에 대한 정보와 스케줄링 된 전송 블록을 구성하는 코드 블록의 개수에 기반하여 서브 전송 블록을 결정하는 단계; 및상기 기지국으로 상기 서브 전송 블록을 통해 데이터를 전송하는 단계를 포함하며,상기 서브 전송 블록은 적어도 하나의 코드 블록을 포함하는 코드블록 묶음인 것을 특징으로 하는,단말의 데이터 전송 방법.
- 제1항에 있어서,상기 서브 전송 블록 결정 단계는,상기 스케줄링 된 전송 블록을 상기 적어도 하나의 코드 블록으로 분할하는 단계; 및상기 서브 전송 블록에 대한 정보와 상기 스케줄링 된 전송 블록을 구성하는 상기 코드 블록의 개수에 기반하여 상기 적어도 하나의 코드 블록을 상기 서브 전송 블록으로 그룹화하는 단계를 포함하는,단말의 데이터 전송 방법.
- 제1항에 있어서,상기 서브 전송 블록에 대한 정보는 상기 스케줄링 된 전송 블록을 구성하는 서브 전송 블록의 개수를 포함하며,상기 서브 전송 블록 결정 단계는 상기 서브 전송 블록의 개수와 상기 코드 블록의 개수에 기반하여 상기 서브 전송 블록을 결정하는 것을 특징으로 하는,단말의 데이터 전송 방법.
- 제3항에 있어서,상기 코드 블록의 개수가 상기 서브 전송 블록의 개수보다 작거나 같은 경우, 상기 서브 전송 블록은 상기 코드 블록의 개수에 기반하여 결정되는 것을 특징으로 하는,단말의 데이터 전송 방법.
- 제3항에 있어서,상기 코드 블록의 개수가 상기 서브 전송 블록의 개수보다 큰 경우, 상기 서브 전송 블록은 상기 서브 전송 블록의 개수에 기반하여 결정되는 것을 특징으로 하는,단말의 데이터 전송 방법.
- 제1항에 있어서,상기 서브 전송 블록 결정 단계는 상기 데이터의 전송 시간 간격(Transmission Time Interval, TTI) 또는 상기 스케줄링 된 전송 블록의 사이즈 또는 상기 기지국으로부터 수신하는 제어정보 중 적어도 하나에 기반하여 상기 서브 전송 블록을 결정하는 것을 특징으로 하는,단말의 데이터 전송 방법.
- 무선 통신 시스템에서 기지국의 데이터 수신 방법에 있어서,단말로 서브 전송 블록에 대한 정보를 전송하는 단계; 및상기 단말로부터 상기 서브 전송 블록에 대한 정보와 스케줄링 된 전송 블록을 구성하는 코드 블록의 개수에 기반하여 결정된 적어도 하나의 서브 전송 블록을 통해 데이터를 수신하는 단계를 포함하며,상기 서브 전송 블록은 적어도 하나의 코드 블록을 포함하는 코드블록 묶음인 것을 특징으로 하는,기지국의 데이터 수신 방법.
- 제7항에 있어서,상기 서브 전송 블록에 대한 정보는 상위 시그날링을 통해 상기 단말로 전송되는 것을 특징으로 하는,기지국의 데이터 수신 방법.
- 무선 통신 시스템의 단말에 있어서,신호를 송수신하는 송수신부; 및기지국으로부터 서브 전송 블록에 대한 정보를 수신하도록 상기 송수신부를 제어하며, 상기 서브 전송 블록에 대한 정보와 스케줄링 된 전송 블록을 구성하는 코드 블록의 개수에 기반하여 서브 전송 블록을 결정하고, 상기 기지국으로 상기 서브 전송 블록을 통해 데이터를 전송하도록 상기 송수신부를 제어하는 제어부를 포함하며,상기 서브 전송 블록은 적어도 하나의 코드 블록을 포함하는 코드블록 묶음인 것을 특징으로 하는,단말.
- 제9항에 있어서,상기 제어부는 상기 스케줄링 된 전송 블록을 상기 적어도 하나의 코드 블록으로 분할하고, 상기 서브 전송 블록에 대한 정보와 상기 코드 블록의 개수에 기반하여 상기 적어도 하나의 코드 블록을 상기 서브 전송 블록으로 그룹화하는 것을 특징으로 하는,단말.
- 제9항에 있어서,상기 서브 전송 블록에 대한 정보는 상기 전송 블록을 구성하는 서브 전송 블록의 개수를 포함하며,상기 제어부는 상기 서브 전송 블록의 개수와 상기 코드 블록의 개수에 기반하여 상기 서브 전송 블록을 결정하는 것을 특징으로 하는,단말.
- 제11항에 있어서,상기 제어부는 상기 코드 블록의 개수가 상기 서브 전송 블록의 개수보다 작거나 같은 경우, 상기 코드 블록의 개수에 기반하여 상기 서브 전송 블록을 결정하는 것을 특징으로 하는,단말.
- 제11항에 있어서,상기 제어부는 상기 코드 블록의 개수가 상기 서브 전송 블록의 개수보다 큰 경우, 상기 서브 전송 블록의 개수에 기반하여 상기 서브 전송 블록을 결정하는 것을 특징으로 하는,단말.
- 제9항에 있어서,상기 제어부는 상기 데이터의 전송 시간 간격(Transmission Time Interval, TTI) 또는 상기 스케줄링 된 전송 블록의 사이즈 또는 상기 기지국으로부터 수신하는 제어정보 중 적어도 하나에 기반하여 상기 서브 전송 블록을 결정하는 것을 특징으로 하는,단말.
- 무선 통신 시스템의 기지국에 있어서,신호를 송수신하는 송수신부; 및단말로 서브 전송 블록에 대한 정보를 전송하도록 상기 송수신부를 제어하며, 상기 단말로부터 상기 서브 전송 블록에 대한 정보와 스케줄링 된 전송 블록을 구성하는 코드 블록의 개수에 기반하여 결정된 서브 전송 블록을 통해 데이터를 수신하도록 상기 송수신부를 제어하는 제어부를 포함하며,상기 서브 전송 블록은 적어도 하나의 코드 블록을 포함하는 코드블록 묶음인 것을 특징으로 하는,기지국.
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2016
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2017
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- 2017-10-30 WO PCT/KR2017/012080 patent/WO2018084515A1/ko unknown
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- 2017-10-30 EP EP17867698.7A patent/EP3522415A4/en active Pending
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2021
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2023
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2024
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KR20180047886A (ko) | 2018-05-10 |
CN109906575A (zh) | 2019-06-18 |
CN109906575B (zh) | 2022-05-03 |
US11101928B2 (en) | 2021-08-24 |
US20240014932A1 (en) | 2024-01-11 |
KR20240049531A (ko) | 2024-04-16 |
EP3522415A4 (en) | 2019-10-16 |
AU2017355887A1 (en) | 2019-05-23 |
US20190268095A1 (en) | 2019-08-29 |
US11777649B2 (en) | 2023-10-03 |
CN115134862A (zh) | 2022-09-30 |
AU2017355887B2 (en) | 2021-12-02 |
EP3522415A1 (en) | 2019-08-07 |
US20210385014A1 (en) | 2021-12-09 |
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