WO2019190264A1 - Procédé et dispositif de transmission d'un canal de commande de liaison montante - Google Patents

Procédé et dispositif de transmission d'un canal de commande de liaison montante Download PDF

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Publication number
WO2019190264A1
WO2019190264A1 PCT/KR2019/003707 KR2019003707W WO2019190264A1 WO 2019190264 A1 WO2019190264 A1 WO 2019190264A1 KR 2019003707 W KR2019003707 W KR 2019003707W WO 2019190264 A1 WO2019190264 A1 WO 2019190264A1
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Prior art keywords
uplink data
transmit power
resource allocation
data channels
allocation information
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PCT/KR2019/003707
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English (en)
Korean (ko)
Inventor
박규진
김기태
Original Assignee
주식회사 케이티
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Priority claimed from KR1020190035586A external-priority patent/KR102298009B1/ko
Application filed by 주식회사 케이티 filed Critical 주식회사 케이티
Priority to US17/043,429 priority Critical patent/US11968671B2/en
Priority to CN201980024002.5A priority patent/CN111937470B/zh
Publication of WO2019190264A1 publication Critical patent/WO2019190264A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

Definitions

  • the present embodiments propose a method and apparatus for transmitting an uplink data channel in a next generation wireless access network (hereinafter, referred to as "NR").
  • NR next generation wireless access network
  • NR New Radio
  • enhancement mobile broadband eMBB
  • massive machine type communication MMTC
  • ultra reliable and low latency communications URLLC
  • Each service scenario has different requirements for data rates, latency, reliability, coverage, and so on, through frequency bands that make up any NR system.
  • As a method for efficiently satisfying the needs of each usage scenario based on different numerology (for example, subcarrier spacing, subframe, transmission time interval, etc.) There is a need for a method of efficiently multiplexing radio resource units of a network.
  • An object of the present embodiments is to provide a method and apparatus for efficiently transmitting an uplink data channel in various cases in which a plurality of uplink data channel transmissions occur simultaneously in one terminal in a next generation wireless network.
  • a method for transmitting an uplink data channel by a user equipment includes a first resource allocation information for a first uplink data channel and a second resource for a second uplink data channel. Receiving the allocation information from the base station, and transmitting the first uplink data channel and the second uplink data channel at least partially in time based on the first and second resource allocation information.
  • a method comprising preferentially assigning transmit power to one of the link data channels and adjusting transmit power for the other.
  • a base station receives an uplink data channel, transmitting first and second resource allocation information to first and second resources for first and second uplink data channels, and first and second resources, respectively.
  • first and second uplink data channels are to be transmitted at least partially overlapping in time based on the allocation information, one of the first and second uplink data channels is preferentially allocated transmission power, and It provides a method comprising the step of receiving an uplink data channel of the transmission power is adjusted uplink data channel.
  • an embodiment includes a receiver for receiving first and second resource allocation information for first and second uplink data channels from a base station, and first and second uplink based on the first and second resource allocation information, respectively.
  • the terminal may include a control unit that allocates transmission power to one of the first and second uplink data channels and adjusts the transmission power for the other one. do.
  • uplink data channels can be efficiently transmitted in various cases in which a plurality of uplink data channel transmissions occur simultaneously in one terminal in a next generation wireless network.
  • FIG. 1 is a diagram schematically illustrating a structure of an NR wireless communication system to which an embodiment of the present invention may be applied.
  • FIG. 2 is a view for explaining a frame structure in an NR system to which the present embodiment can be applied.
  • FIG. 3 is a diagram for describing a resource grid supported by a radio access technology to which the present embodiment can be applied.
  • FIG. 4 is a diagram for describing a bandwidth part supported by a radio access technology to which the present embodiment can be applied.
  • FIG. 5 is a diagram exemplarily illustrating a synchronization signal block in a radio access technology to which the present embodiment can be applied.
  • FIG. 6 is a diagram for explaining a random access procedure in a radio access technology to which the present embodiment can be applied.
  • FIG. 8 is a diagram illustrating an example of symbol level alignment among different SCSs in different SCSs to which the present embodiment can be applied.
  • FIG. 9 is a diagram illustrating a conceptual example of a bandwidth part to which the present embodiment can be applied.
  • FIG. 10 illustrates that a plurality of PUSCH transmissions occur simultaneously.
  • FIG. 11 is a diagram illustrating a case in which a collision occurs between a first PUSCH and a second PUSCH having different durations in one terminal in a duration based priority setting method according to the first embodiment.
  • FIG. 12 is a diagram illustrating a case in which a collision occurs between an uplink grant based first PUSCH and a grant-free based second PUSCH in one UE in a method for setting priority based on UL grant reception according to Embodiment 2; FIG. to be.
  • FIG. 13 is a diagram illustrating a case in which a priority is determined based on different uplink grant transmission / reception timings in one terminal in a method for setting priority based on uplink grant reception timing according to the third embodiment.
  • FIG. 14 is a flowchart illustrating a method of transmitting an uplink data channel by a terminal in this embodiment.
  • 15 is a flowchart of a method for a base station to receive an uplink data channel in this embodiment.
  • 16 is a diagram illustrating a configuration of a base station according to another embodiment.
  • 17 is a diagram illustrating a configuration of a user terminal according to another embodiment.
  • first, second, A, B, (a), and (b) may be used. These terms are only to distinguish the components from other components, and the terms are not limited in nature, order, order, or number of the components. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected to or connected to that other component, but between components It is to be understood that the elements may be “interposed” or each component may be “connected”, “coupled” or “connected” through other components.
  • the wireless communication system herein refers to a system for providing various communication services such as voice and data packets using radio resources, and may include a terminal, a base station, and a core network.
  • the embodiments disclosed below may be applied to a wireless communication system using various wireless access technologies.
  • the embodiments of the present invention may include code division multiple access (CDMA), frequency division multiple access (FDMA), timedivision multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA).
  • CDMA may be implemented by a radio technology such as universal terrestrial radio access (UTRA) or CDMA2000.
  • TDMA may be implemented in a wireless technology such as global system for mobile communications (GSM) / general packet radio service (GPRS) / enhanced data rates for GSM evolution (EDGE).
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • EDGE enhanced data rates for GSM evolution
  • OFDMA may be implemented in wireless technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, evolved UTRA (E-UTRA), and the like.
  • IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with systems based on IEEE 802.16e.
  • UTRA is part of a universal mobile telecommunications system (UMTS).
  • 3rd generation partnership project (3GPP) long term evolution (LTE) is part of evolved UMTS (E-UMTS) using evolved-UMTS terrestrial radio access (E-UTRA), employing OFDMA in downlink and SC- in uplink FDMA is adopted.
  • 3GPP 3rd generation partnership project
  • LTE long term evolution
  • E-UMTS evolved UMTS
  • E-UTRA evolved-UMTS terrestrial radio access
  • the embodiments may be applied to a wireless access technology that is currently disclosed or commercialized, and may be applied to a wireless access technology that is
  • the terminal in the present specification is a comprehensive concept of a device including a wireless communication module for communicating with a base station in a wireless communication system, and includes a UE in WCDMA, LTE, HSPA, and IMT-2020 (5G or New Radio).
  • (User Equipment) should be interpreted as a concept that includes a mobile station (MS), a user terminal (UT), a subscriber station (SS), a wireless device, and the like in GSM.
  • the terminal may be a user portable device such as a smart phone according to a usage form, and may mean a vehicle, a device including a wireless communication module in a vehicle, and the like in a V2X communication system.
  • a machine type communication (Machine Type Communication) system may mean an MTC terminal, an M2M terminal equipped with a communication module to perform machine type communication.
  • a base station or a cell of the present specification refers to an end point that communicates with a terminal in terms of a network, and includes a Node-B, an evolved Node-B, an eNB, a gNode-B, a Low Power Node, and an LPN. Sector, site, various types of antenna, base transceiver system (BTS), access point, access point (for example, transmission point, reception point, transmission point and reception point), relay node ), A mega cell, a macro cell, a micro cell, a pico cell, a femto cell, a remote radio head (RRH), a radio unit (RU), and a small cell.
  • BTS base transceiver system
  • RRH remote radio head
  • RU radio unit
  • the base station may be interpreted in two meanings. 1) the device providing the mega cell, the macro cell, the micro cell, the pico cell, the femto cell, the small cell in relation to the wireless area, or 2) the wireless area itself. In 1) all devices that provide a given radio area are controlled by the same entity or interact with each other to cooperatively configure the radio area to the base station. According to the configuration of the wireless area, a point, a transmission point, a transmission point, a reception point, and the like become one embodiment of a base station. In 2), the base station may indicate the radio area itself that receives or transmits a signal from the viewpoint of the user terminal or the position of a neighboring base station.
  • a cell refers to a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.
  • Uplink means a method for transmitting and receiving data to the base station by the terminal
  • downlink Downlink (Downlink, DL, or downlink) means a method for transmitting and receiving data to the terminal by the base station do.
  • Downlink may mean a communication or communication path from the multiple transmission and reception points to the terminal
  • uplink may mean a communication or communication path from the terminal to the multiple transmission and reception points.
  • the transmitter in the downlink, the transmitter may be part of multiple transmission / reception points, and the receiver may be part of the terminal.
  • uplink a transmitter may be part of a terminal, and a receiver may be part of multiple transmission / reception points.
  • the uplink and the downlink transmit and receive control information through a control channel such as a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), and the like.
  • a control channel such as a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), and the like.
  • Data is transmitted and received by configuring the same data channel.
  • a situation in which a signal is transmitted and received through a channel such as PUCCH, PUSCH, PDCCH, and PDSCH is described as 'transmit and receive PUCCH, PUSCH, PDCCH, and PDSCH'. do.
  • 3GPP After researching 4G (4th-Generation) communication technology, 3GPP is conducting research on 5G (5th-Generation) communication technology to meet the requirements of ITU-R next generation wireless access technology. Specifically, 3GPP is conducting research on a new NR communication technology separate from LTE-A pro and 4G communication technology, in which LTE-Advanced technology is enhanced to meet the requirements of ITU-R as 5G communication technology.
  • LTE-A pro and NR both appear to be submitted in 5G communication technology, but for the convenience of description, the following describes the embodiments of the present invention mainly on NR.
  • Operational scenarios in NR defined various operational scenarios by adding considerations to satellites, automobiles, and new verticals in the existing 4G LTE scenarios.In terms of services, they have eMBB (Enhanced Mobile Broadband) scenarios and high terminal density. Supports a range of mass machine communication (MMTC) scenarios that require low data rates and asynchronous connections, and Ultra Reliability and Low Latency (URLLC) scenarios that require high responsiveness and reliability and support high-speed mobility. .
  • MMTC mass machine communication
  • URLLC Ultra Reliability and Low Latency
  • NR has developed a wireless communication system using new waveform and frame structure technology, low latency technology, mmWave support technology, and forward compatible technology. It starts.
  • the NR system proposes various technological changes in terms of flexibility to provide forward compatibility. The main technical features will be described below with reference to the drawings.
  • FIG. 1 is a diagram schematically illustrating a structure of an NR system to which the present embodiment may be applied.
  • NR system is divided into 5G Core Network (5GC) and NR-RAN part, NG-RAN is for the user plane (SDAP / PDCP / RLC / MAC / PHY) and UE (User Equipment) It consists of gNB and ng-eNBs providing a control plane (RRC) protocol termination.
  • the gNB interconnects or gNBs and ng-eNBs are interconnected via an Xn interface.
  • gNB and ng-eNB are each connected to 5GC through the NG interface.
  • the 5GC may be configured to include an access and mobility management function (AMF) that is in charge of a control plane such as a terminal access and mobility control function, and a user plane function (UPF), which is in charge of a control function in user data.
  • AMF access and mobility management function
  • UPF user plane function
  • NR includes support for sub-6 GHz frequency bands (FR1, Frequency Range 1) and 6 GHz and higher frequency bands (FR2, Frequency Range 2).
  • gNB means a base station providing the NR user plane and control plane protocol termination to the terminal
  • ng-eNB means a base station providing the E-UTRA user plane and control plane protocol termination to the terminal.
  • the base station described in the present specification should be understood to mean gNB and ng-eNB, and may be used to mean gNB or ng-eNB.
  • a CP-OFDM waveform using a cyclic prefix is used for downlink transmission, and a CP-OFDM or DFT-s-OFDM is used for uplink transmission.
  • OFDM technology is easy to combine with Multiple Input Multiple Output (MIMO), and has the advantage of using a low complexity receiver with high frequency efficiency.
  • MIMO Multiple Input Multiple Output
  • the NR transmission neuron is determined based on sub-carrier spacing and cyclic prefix (CP), based on 15khz as shown in Table 1 below.
  • CP cyclic prefix
  • the NR's neuronality may be classified into five types according to the subcarrier spacing. This is different from the fixed subcarrier spacing of LTE, which is one of 4G communication technologies, to be 15 kHz. Specifically, the subcarrier spacing used for data transmission in NR is 15, 30, 60, 120khz, and the subcarrier spacing used for synchronization signal transmission is 15, 30, 120, 240khz. In addition, the extended CP is applied only to the 60khz subcarrier interval.
  • the frame structure (frame) in NR is a frame having a length of 10ms consisting of 10 subframes having the same length of 1ms (frame) is defined.
  • One frame may be divided into half frames of 5 ms, and each half frame includes five subframes.
  • one subframe consists of one slot
  • each slot consists of 14 OFDM symbols.
  • 2 is a view for explaining a frame structure in an NR system to which the present embodiment can be applied.
  • the slot is fixedly configured with 14 OFDM symbols in the case of a normal CP, but the length of the slot may vary depending on the subcarrier spacing. For example, in the case of a newerology with a 15khz subcarrier spacing, the slot has a length of 1 ms and the same length as the subframe.
  • the slot includes 14 OFDM symbols, but two slots may be included in one subframe with a length of 0.5 ms. That is, the subframe and the frame are defined with a fixed time length, the slot is defined by the number of symbols, the time length may vary according to the subcarrier interval.
  • NR defines a basic unit of scheduling as a slot, and also introduces a mini slot (or subslot or non-slot based schedule) to reduce transmission delay of a radio section.
  • the use of a wide subcarrier spacing shortens the length of one slot in inverse proportion, thereby reducing the transmission delay in the radio section.
  • the mini slot (or sub slot) is for efficient support for the URLLC scenario and can be scheduled in units of 2, 4, and 7 symbols.
  • NR defines uplink and downlink resource allocation at a symbol level in one slot.
  • a slot structure capable of transmitting HARQ ACK / NACK directly within a transmission slot has been defined, and this slot structure will be described as a self-contained structure.
  • NR is designed to support a total of 256 slot formats, of which 62 slot formats are used in the Rel-15.
  • a combination of various slots supports a common frame structure constituting an FDD or TDD frame. For example, a slot structure in which all symbols of a slot are set to downlink, a slot structure in which all symbols are set to uplink, and a slot structure in which downlink symbol and uplink symbol are combined are supported.
  • NR also supports that data transmission is distributed and scheduled in one or more slots. Accordingly, the base station can inform the terminal whether the slot is a downlink slot, an uplink slot, or a flexible slot by using a slot format indicator (SFI).
  • SFI slot format indicator
  • the base station may indicate the slot format by using the SFI to indicate the index of the table configured through the RRC signaling to the terminal specific, and may be indicated dynamically through the downlink control information (DCI) or statically or quasi-statically through the RRC. It may be.
  • DCI downlink control information
  • the antenna port is defined such that the channel on which the symbol is carried on the antenna port can be inferred from the channel on which another symbol on the same antenna port is carried. If the large-scale property of a channel on which a symbol on one antenna port is carried can be deduced from the channel on which the symbol on another antenna port is carried, then the two antenna ports are quasi co-located or QC / QCL. quasi co-location relationship.
  • the broad characteristics include one or more of delay spread, Doppler spread, frequency shift, average received power, and received timing.
  • FIG. 3 is a diagram for describing a resource grid supported by a radio access technology to which the present embodiment can be applied.
  • the Resource Grid since the Resource Grid supports a plurality of numerologies in the same carrier, a resource grid may exist according to each numerology.
  • the resource grid may exist according to the antenna port, subcarrier spacing, and transmission direction.
  • the resource block is composed of 12 subcarriers and is defined only in the frequency domain.
  • a resource element is composed of one OFDM symbol and one subcarrier. Accordingly, as shown in FIG. 3, one resource block may vary in size depending on the subcarrier spacing.
  • the NR defines "Point A" serving as a common reference point for the resource block grid, a common resource block, a virtual resource block, and the like.
  • FIG. 4 is a diagram for describing a bandwidth part supported by a radio access technology to which the present embodiment can be applied.
  • the bandwidth part can be designated within the carrier bandwidth and used by the terminal.
  • the bandwidth part is associated with one neuralology and consists of a subset of consecutive common resource blocks, and can be dynamically activated over time.
  • the UE is configured with up to four bandwidth parts, respectively, uplink and downlink, and data is transmitted and received using the bandwidth part activated at a given time.
  • uplink and downlink bandwidth parts are set independently, and in the case of unpaired spectrum, to prevent unnecessary frequency re-tunning between downlink and uplink operation.
  • the bandwidth parts of the downlink and the uplink are configured in pairs so as to share the center frequency.
  • the UE performs a cell search and random access procedure to access and communicate with a base station.
  • Cell search is a procedure in which a terminal synchronizes with a cell of a corresponding base station, obtains a physical layer cell ID, and acquires system information by using a synchronization signal block (SSB) transmitted by a base station.
  • SSB synchronization signal block
  • FIG. 5 is a diagram exemplarily illustrating a synchronization signal block in a radio access technology to which the present embodiment can be applied.
  • an SSB is composed of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), which occupy one symbol and 127 subcarriers, respectively, three OFDM symbols, and a PBCH spanning 240 subcarriers. .
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • the terminal monitors the SSB in the time and frequency domain to receive the SSB.
  • SSB can be transmitted up to 64 times in 5ms.
  • a plurality of SSBs are transmitted in different transmission beams within 5ms, and the UE performs detection assuming that SSBs are transmitted every 20ms based on a specific beam used for transmission.
  • the number of beams available for SSB transmission within 5 ms time may increase as the frequency band increases. For example, up to 4 SSB beams can be transmitted at 3 GHz or less, and up to 8 different SSBs can be transmitted at a frequency band of 3 to 6 GHz and up to 64 different beams at a frequency band of 6 GHz or more.
  • Two SSBs are included in one slot, and the start symbol and the number of repetitions in the slot are determined according to the subcarrier spacing.
  • SSB is not transmitted at the center frequency of the carrier bandwidth, unlike the SS of the conventional LTE. That is, the SSB may be transmitted even where the center of the system band is not, and when supporting broadband operation, a plurality of SSBs may be transmitted in the frequency domain. Accordingly, the terminal monitors the SSB using a synchronization raster, which is a candidate frequency position for monitoring the SSB.
  • the carrier raster and the synchronization raster which are the center frequency position information of the channel for initial access, are newly defined in the NR, and the synchronization raster has a wider frequency interval than the carrier raster, and thus supports fast SSB search of the terminal. Can be.
  • the UE may acquire the MIB through the PBCH of the SSB.
  • the Master Information Block includes minimum information for the UE to receive the remaining system information (RMSI) that the network broadcasts.
  • the PBCH may include information on the position of the first DM-RS symbol on the time-domain, information for the UE to monitor SIB1 (for example, SIB1 neuronological information, information related to SIB1 CORESET, search space information, PDCCH related parameter information, etc.), offset information between the common resource block and the SSB (the position of the absolute SSB in the carrier is transmitted through SIB1), and the like.
  • SIB1 neuronological information is equally applied to message 2 and message 4 of the random access procedure for accessing the base station after the terminal completes the cell search procedure.
  • the aforementioned RMSI means System Information Block 1 (SIB1), and SIB1 is broadcast periodically (ex, 160 ms) in a cell.
  • SIB1 includes information necessary for the UE to perform an initial random access procedure and is periodically transmitted through the PDSCH.
  • the UE needs to receive the information of the neuterology used for the SIB1 transmission and the control resource set (CORESET) information used for scheduling the SIB1 through the PBCH.
  • the UE checks scheduling information on SIB1 using SI-RNTI in CORESET and acquires SIB1 on PDSCH according to the scheduling information.
  • the remaining SIBs other than SIB1 may be transmitted periodically or may be transmitted at the request of the terminal.
  • FIG. 6 is a diagram for explaining a random access procedure in a radio access technology to which the present embodiment can be applied.
  • the terminal transmits a random access preamble for random access to the base station.
  • the random access preamble is transmitted on the PRACH.
  • the random access preamble is transmitted to the base station through a PRACH composed of consecutive radio resources in a specific slot that is periodically repeated.
  • BFR beam failure recovery
  • the terminal receives a random access response to the transmitted random access preamble.
  • the random access response may include a random access preamble identifier (ID), an uplink grant (UL Grant), a temporary Temporary Cell-Radio Network Temporary Identifier (C-RNTI), and a time alignment command (TAC). Since one random access response may include random access response information for one or more terminals, a random access preamble identifier may be included to indicate to which terminal the included uplink grant, temporary C-RNTI, and TAC are valid. .
  • the random access preamble identifier may be an identifier for the random access preamble received by the base station.
  • the TAC may be included as information for the UE to adjust uplink synchronization.
  • the random access response may be indicated by a random access identifier on the PDCCH, that is, a random access-radio network temporary identifier (RA-RNTI).
  • RA-RNTI random access-radio network temporary identifier
  • the terminal receiving the valid random access response processes the information included in the random access response and performs the scheduled transmission to the base station. For example, the terminal applies a TAC and stores a temporary C-RNTI.
  • the terminal applies a TAC and stores a temporary C-RNTI.
  • the uplink grant data stored in the buffer of the terminal or newly generated data is transmitted to the base station. In this case, information that can identify the terminal should be included.
  • the terminal receives a downlink message for contention resolution.
  • the downlink control channel in NR is transmitted in a control resource set (CORESET) having a length of 1 to 3 symbols, and transmits up / down scheduling information, slot format index (SFI), and transmit power control (TPC) information.
  • CORESET control resource set
  • SFI slot format index
  • TPC transmit power control
  • CORESET Control Resource Set
  • the terminal may decode the control channel candidate using one or more search spaces in the CORESET time-frequency resource.
  • the QCL (Quasi CoLocation) assumption for each CORESET has been set, which is used to inform the analog beam direction in addition to the delay spread, Doppler spread, Doppler shift, and average delay, which are assumed by conventional QCL.
  • CORESET may exist in various forms within a carrier bandwidth in one slot, and CORESET may be configured with up to three OFDM symbols on a time-domain.
  • CORESET is defined as a multiple of six resource blocks up to the carrier bandwidth in the frequency domain.
  • the first CORESET is indicated through the MIB as part of the initial bandwidth part configuration to receive additional configuration information and system information from the network.
  • the terminal may receive and configure one or more CORESET information through RRC signaling.
  • NR New Radio
  • RAN WG1 has a frame structure for each new radio (NR). (frame structure), channel coding & modulation (waveform & multiple access scheme), etc. design is in progress.
  • NR new radio
  • the NR is required to be designed to satisfy various QoS requirements required for each detailed and detailed service scenario as well as an improved data rate compared to LTE / LTE-Advanced.
  • enhancement mobile broadband eMBB
  • massive machine type communication MMTC
  • ultra reliable and low latency communications URLLC
  • Each service scenario is a frequency constituting an arbitrary NR system because the requirements for data rates, latency, reliability, coverage, etc. are different from each other.
  • a radio resource unit based on different numerology (eg, subcarrier spacing, subframe, TTI, etc.) as a method for efficiently satisfying each service scenario needs through a band. There is a need for a method of efficiently multiplexing (multiplexing).
  • TDM, FDM, or TDM / FDM based on one or a plurality of NR component carriers (s) for numerology having different subcarrier spacing values.
  • a method of supporting multiplexing and a scheduling unit in a time domain a method of supporting one or more time units has been discussed.
  • a subframe is defined as a kind of time-domain structure, and reference numerology is used to define a subframe duration. It is decided to define a single subframe duration consisting of 14 OFDM symbols of 15 kHz sub-carrier spacing (SCS) based normal CP overhead, the same as LTE. Accordingly, in NR, the subframe has a time duration of 1 ms.
  • SCS sub-carrier spacing
  • subframes of NR are absolute reference time durations
  • slots and mini-slots are time units based on actual uplink / downlink data scheduling.
  • any slot consists of 14 symbols, and according to the transmission direction of the slot, all symbols are used for DL transmission or all symbols are UL transmission (UL). It may be used for transmission or in the form of a downlink portion (DL portion) + a gap (gap) + uplink portion (UL portion).
  • a short slot time-domain scheduling interval for uplink / downlink data transmission and reception is defined based on a minislot consisting of fewer symbols than the slot in an arbitrary number (numerology) (or SCS).
  • a domain scheduling interval may be set, or a long time-domain scheduling interval for up / downlink data transmission / reception may be configured through slot aggregation.
  • latency critical data such as URLLC
  • it is based on 1ms (14 symbols) defined in a numerology-based frame structure with small SCS value such as 15kHz.
  • SCS value such as 15kHz.
  • a mini slot consisting of fewer OFDM symbols than the corresponding slot is defined and based on this, critical to the same delay rate as the corresponding URLLC. (latency critical) may be defined so that scheduling is performed for data.
  • a number of numerology having different SCS values in one NR carrier is supported for each numerology.
  • Scheduling data according to a latency requirement based on a defined slot (or mini slot) length is also considered. For example, as shown in FIG. 8 below, when the SCS is 60 kHz, since the symbol length is reduced by about 1/4 compared to the case of the SCS 15 kHz, when one slot is formed of the same 14 OFDM symbols, The slot length is 1ms, while the 60kHz-based slot length is reduced to about 0.25ms.
  • L1 control information such as DL assignment Downlink Control Information (DCI) and UL Grant DCI is transmitted and received through a PDCCH.
  • a control channel element (CCE) is defined as a resource unit for transmitting the PDCCH, and in the NR, a control resource set (CORESET), which is a frequency / time resource for transmitting the PDCCH, may be set for each terminal.
  • each CORESET may be configured with one or more search spaces consisting of one or more PDCCH candidates for monitoring the PDCCH.
  • uplink transmission power of a terminal is determined by a maximum transmission power value, a higher layer parameter, a path loss, and a TPC command value transmitted through a downlink control channel. .
  • the uplink control channel in * NR may be divided into a short PUCCH and a long PUCCH structure supporting different symbol lengths in consideration of transmission delay and requirements for coverage.
  • various options are provided for the start symbol position and symbol length of the PUCCH in consideration of a symbol-level flexible resource configuration scheme.
  • it supports functions such as on / off control DM-RS overhead setting for frequency hopping of the PUCCH.
  • non-slot-based (ie, mini-slot-based) PUSCH transmission and thus DM-RS transmission type mapping type (mapping type) B and aggregated slot (aggregated-slot) -based PUSCH transmission
  • Various types of PUSCH transmission methods have been defined, such as grant-free PUSCH transmission.
  • a scalable bandwidth operation for any LTC CC is supported. That is, according to the frequency deployment scenario (deployment scenario) in any LTE carrier to configure a single LTE CC, a minimum bandwidth of 1.4 MHz to 20 MHz could be configured, the normal LTE terminal is one LTE For the CC, the transmit / receive capability of 20 MHz bandwidth was supported.
  • bandwidth part (s)
  • activation through different bandwidth part configuration
  • one or more bandwidth parts may be configured through one serving cell configured from a terminal perspective, and the corresponding UE may include one downlink bandwidth part (s) in a serving cell.
  • DL bandwidth part) and one uplink bandwidth part (UL bandwidth part) by activation (activation) was defined to be used for transmitting and receiving uplink / downlink data.
  • activation activation
  • an initial bandwidth part for an initial access procedure of a terminal is defined in a serving cell, and at least one terminal is specified through dedicated RRC signaling for each terminal.
  • a bandwidth part (s) may be configured, and a default bandwidth part for a fallback operation may be defined for each terminal.
  • a plurality of downlink and / or uplink bandwidth parts are simultaneously activated and used according to the capability and bandwidth part (s) configuration of the terminal.
  • s capability and bandwidth part
  • only one downlink bandwidth part and one uplink bandwidth part may be activated at an arbitrary time in an arbitrary terminal in NR rel-15. .
  • PUSCH physical uplink shared channel
  • the present specification proposes a method of transmitting a PUSCH of a terminal when a plurality of PUSCH transmission resource allocations are made through the same slot (s) or symbol (s) in one terminal.
  • the present specification provides a collision between a plurality of PUSCH transmissions based on different reliability requirements when transmitting uplink data in one UE (that is, a plurality of UEs).
  • a specific PUSCH transmission of a UE and a transmission power control method according thereto are proposed.
  • the UE transmits the PUSCH to the carrier f of the serving cell c by using a parameter set configuration with index j and a PUSCH power control adjustment state with index l.
  • the transmission power (P PUSCH , f, c (i, j, qd, l)) for the PUSCH transmission of any terminal by the following equation (1) It was decided.
  • Equation 1 the variables summarized below are specifically defined in 7.Uplink Power control in TS38.213.
  • P CMAX , f, c (i) is the configured UE transmit power for carrier f of serving cell for the carrier f of the serving cell c in the PUSCH transmission period i (PUSCH transmission period i) c in PUSCH transmission period i).
  • P o_ PUSCH , f, c (j) is a parameter composed of the sum of components P O_NOMINAL_ PUSCH , f, c (j) and components P O_UE_PUSCH, f, c (j) provided by higher layer parameters.
  • u is the carrier f of the serving cell c and the subcarrier spacing for the PUSCH.
  • the bandwidth of the PUSCH resource assignment expressed in number of resource blocks for PUSCH transmission is expressed by the number of allocated resource blocks for PUSCH transmission.
  • Is provided by certain higher layer parameters Is a downlink path attenuation value in dB unit calculated by the corresponding terminal using the reference signal resource q d , Is an offset value calculated by a specific upper layer parameter, Is a value indicating a PUSCH power control adjustment state with index l calculated by the TPC comment included in the downlink control information and a specific upper layer parameter.
  • a UE When a UE transmits one or more slot (s) or a mini-slot based (i.e. non-slot based) PUSCH, the UE derives a PUSCH transmission power value by Equation (1).
  • Equation 1 when a UE transmits a PUSCH, the UE sets a corresponding PUSCH transmission power value according to a path attenuation value between the base station and the corresponding UE, the number of allocated resource blocks, higher layer parameters, and a TPC comment value, and the corresponding derivation.
  • the transmitted power value is greater than the P CMAX value, which is the maximum transmit power value set for the UE, the PUSCH is transmitted based on the corresponding maximum transmit power value.
  • Non-slot based PUSCH transmission or grant-free based PUSCH transmission may occur.
  • the uplink grant-based PUSCH transmission is scheduled PUSCH transmission, ie, dynamic grand based, through dynamic L1 signaling in which resource allocation information for PUSCH transmission is transmitted through a PDCCH, which is a physical layer control channel.
  • PUSCH transmission Means PUSCH transmission.
  • grant-free PUSCH transmission is a PUSCH transmission based on RRC signaling or RRC signaling + physical layer control signaling, and basically means a PUSCH transmission scheduled through a configured grant.
  • grant-free PUSCH transmission includes type-1 configured grant-based PUSCH transmission in which all scheduling related information for PUSCH transmission is transmitted through ConfiguredGrantConfig information transmitted through higher layer signaling, and higher layer signaling.
  • type-2 configured grant type-2 configured grant
  • FIG. 10 illustrates that a plurality of PUSCH transmissions occur simultaneously.
  • uplink grant based PUSCH transmission and grant-free based PUSCH transmission occur, a plurality of PUSCH transmissions having different time durations (first PUSCH and first PU) in one UE are generated. 2PUSCH) may occur simultaneously ((a) to (c) of FIG. 10). As shown in (a) of FIG. 10, the second PUSCH transmission may be fully overlapped in the time-domain with the first PUSCH transmission. In addition, as shown in FIG. 10A, the second PUSCH transmission may be partially overlapped in the time-domain with the first PUSCH transmission.
  • a plurality of PUSCH transmissions having the same duration with each other may occur simultaneously in one UE.
  • first PUSCH and second PUSCH When a plurality of PUSCH transmissions (first PUSCH and second PUSCH) occur at the same time, it is necessary to define a PUSCH transmission operation of the UE. In more detail, a definition of a power allocation method for the plurality of PUSCH transmissions is required.
  • the present specification proposes a PUSCH transmission operation and a PUSCH transmission power control method in various cases where a plurality of PUSCH transmissions simultaneously occur in one terminal.
  • the present specification proposes a priority-based PUSCH transmission power allocation method when a plurality of PUSCH transmissions simultaneously occur in one UE.
  • the transmission power allocation described below means transmission power allocation for actually transmitting the corresponding PUSCH, and accordingly, whether to transmit the corresponding PUSCH is determined. Also, below, two first PUSCHs and a second PUSCH are described as a plurality of PUSCH transmissions, but the plurality of PUSCH transmissions may be two or more than two.
  • the UE may select a PUSCH to transmit preferentially or to allocate transmission power preferentially based on time-domain resource allocation information between the corresponding PUSCH transmissions.
  • the UE may preferentially transmit one of the plurality of PUSCH transmissions based on each PUSCH transmission duration.
  • the UE may preferentially transmit the PUSCH having the shortest PUSCH duration based on each PUSCH transmission duration.
  • the UE may preferentially transmit a PUSCH having the longest PUSCH duration based on each PUSCH transmission duration.
  • the UE may preferentially allocate transmit power to the PUSCH of the shortest duration among the plurality of PUSCHs. In contrast, the UE may preferentially allocate transmit power to the PUSCH of the longest duration of the plurality of PUSCHs.
  • the transmission power may be preferentially allocated to the PUSCH transmission of the shortest duration, and all the PUSCH transmissions of the shortest duration and other PUSCH transmissions overlapping in the time-domain may be dropped.
  • dropping the PUSCH transmission may include not transmitting the PUSCH or setting the PUSCH transmission power to “zero”.
  • the transmission power may be preferentially allocated to the PUSCH transmission of the shortest duration, and the remaining power may be allocated to the next PUSCH transmission.
  • the duration-based priority setting method according to the first embodiment may be applied only within an overlapping symbol, applied to all symbols after a symbol interval in which overlapping has started, or may be applied to the entire PUSCH transmission.
  • FIG. 11 is a diagram illustrating a case in which a collision occurs between a first PUSCH and a second PUSCH having different durations in one terminal in a duration based priority setting method according to the first embodiment.
  • a second PUSCH transmission having a short transmission duration in a time-domain is allocated. Priority is given, and accordingly, the first PUSCH transmission except for the second PUSCH may be dropped.
  • i) drop the entire first PUSCH transmission ii) drop the transmission of the first PUSCH only for the corresponding symbol interval, or iii) the symbol at which the overlap is started.
  • the transmission of the first PUSCH may be dropped only for subsequent symbols.
  • the UE drops the first PUSCH transmission only for the 8th and 9th symbols, and in other symbols. Normally, the first PUSCH may be transmitted.
  • the UE normally transmits the first PUSCH up to the seventh symbol before overlapping starts.
  • the first PUSCH transmission may be dropped from the eighth symbol to the last symbol.
  • the UE preferentially provides the equation 1 or the new PUSCH for the second PUSCH.
  • the PUSCH transmission power may be allocated according to the new equation, and when there is remaining transmission power, the remaining transmission power may be allocated for the first PUSCH transmission.
  • the transmission power is defined for all the first PUSCH transmissions based on the remaining power excluding the second PUSCH transmission power, or ii) only for the interval in which the overlap is made.
  • the transmission power is based on the remaining power except for the second PUSCH transmission power, and the equation for Equation 1 or the new PUSCH transmission power is normally defined in the remaining sections, the first PUSCH transmission power may be allocated according to the new equation. .
  • the transmission power is allocated on the basis of the remaining power except for the second PUSCH transmission power only for the symbols after the symbol at which the overlap is started, and in the remaining intervals, Equation 1 or the equation for the new PUSCH transmission power may be normally defined.
  • the first PUSCH transmission power may be allocated according to the new equation.
  • Embodiment 2 Uplink Grant Received Based Priority How to set up
  • the UE may determine the priority between the corresponding PUSCHs according to whether an uplink grant is received. That is, the terminal may determine the priority of the corresponding PUSCH according to the uplink grant based PUSCH transmission or the grant-free based PUSCH transmission.
  • the UE may preferentially perform grant-free based PUSCH transmission. That is, grant-based PUSCH transmission set in type 1 or grant-based PUSCH transmission set in type 2 may have priority over dynamic uplink grant-based PUSCH transmission.
  • the UE may preferentially transmit the grant-free PUSCH. That is, the UE drops all grant-based PUSCH transmissions and all UL grant-based PUSCH transmissions completely or partially overlapped in the time-domain or preferentially transmits grant-free PUSCH transmissions. Power may be allocated, and the remaining power may be allocated for uplink grant-based PUSCH transmission.
  • FIG. 12 is a diagram illustrating a case in which a collision occurs between an uplink grant based first PUSCH and a grant-free based second PUSCH in one UE in a method for setting priority based on UL grant reception according to Embodiment 2; FIG. to be.
  • the UE when a collision occurs between uplink grant-based first PUSCH transmission and grant-free second PUSCH transmission in one UE, the UE may be configured to transmit a second PUSCH transmission that is grant-free PUSCH transmission. Priority can be given to the first PUSCH transmission, except for the second PUSCH.
  • i) drop the entire first PUSCH transmission ii) drop the transmission of the first PUSCH only for the corresponding symbol interval, or iii) the symbol at which the overlap is started.
  • the transmission of the first PUSCH may be dropped only for subsequent symbols.
  • the UE drops the first PUSCH transmission only for the corresponding 8th and 9th symbols, and in other symbols. Normally, the first PUSCH may be transmitted.
  • the UE normally transmits the first PUSCH up to the seventh symbol before overlapping starts.
  • the first PUSCH transmission may be dropped from the eighth symbol to the last symbol.
  • the UE when uplink grant-based PUSCH transmission and grant-free based PUSCH transmission are allocated, the UE preferentially calculates Equation 1 or new PUSCH transmission power for the grant-free based second PUSCH. If the equation is defined, the PUSCH transmission power may be allocated according to the new equation, and if there is remaining transmission power, the remaining transmission power may be allocated for the uplink grant-based first PUSCH transmission.
  • the transmission power is defined for all the first PUSCH transmissions based on the remaining power excluding the second PUSCH transmission power, or ii) only for the interval in which the overlap is made.
  • the transmission power is based on the remaining power except for the second PUSCH transmission power, and the equation for Equation 1 or the new PUSCH transmission power is normally defined in the remaining sections, the first PUSCH transmission power may be allocated according to the new equation. .
  • the transmission power is allocated on the basis of the remaining power except for the second PUSCH transmission power only for the symbols after the symbol at which the overlap is started, and in the remaining intervals, Equation 1 or the equation for the new PUSCH transmission power may be normally defined.
  • the first PUSCH transmission power may be allocated according to the new equation.
  • first PUSCH uplink grant-based PUSCH
  • second PUSCH the same method as in the case of giving priority to a grant-free based PUSCH
  • priority may be defined according to a corresponding grant type.
  • grant based on type 1 configured PUSCH transmission may be preferred to grant based on type 2 grant PUSCH, or conversely, type 2 configured based on grant PUSCH transmission may be preferred to type 1 configured grant based PUSCH transmission.
  • the specific PUSCH transmission method according to this may follow the above description.
  • Embodiment 3 Uplink Grant Receive Timing Based Priority How to set up
  • the UE may determine the priority between corresponding PUSCHs based on transmission / reception timing of an uplink grant corresponding to each PUSCH.
  • the UE may preferentially transmit the PUSCH having the most recent UL grant transmission / reception time point. That is, when a plurality of PUSCH transmissions overlap in whole or in part in a time-domain in one UE, the uplink grant transmission time corresponding to each PUSCH is transmitted with priority for the most recent PUSCH, and the remaining PUSCHs are transmitted. May drop or allocate transmit power preferentially to the most recently transmitted and received PUSCH and allocate the remaining power to other PUSCHs.
  • FIG. 13 is a diagram illustrating a case in which a priority is determined based on different uplink grant transmission / reception timings in one terminal in a method for setting priority based on uplink grant reception timing according to the third embodiment.
  • the terminal when a collision occurs between a first PUSCH transmission and a second PUSCH transmission in one terminal, the terminal gives priority to a second PUSCH transmission recently receiving an uplink grant for the corresponding PUSCH. Accordingly, the first PUSCH transmission except for the second PUSCH may be dropped.
  • i) drop the entire first PUSCH transmission ii) drop the transmission of the first PUSCH only for the corresponding symbol interval, or iii) the symbol at which the overlap is started.
  • the transmission of the first PUSCH may be dropped only for subsequent symbols.
  • the UE drops the first PUSCH transmission only for the corresponding 8th and 9th symbols, and in other symbols. Normally, the first PUSCH may be transmitted.
  • the UE normally transmits the first PUSCH up to the seventh symbol before the overlap is started.
  • the first PUSCH transmission may be dropped from the eighth symbol to the last symbol.
  • the UE when a corresponding equation (1) or a new PUSCH transmission power is defined for a second PUSCH transmission recently receiving an uplink grant for the corresponding PUSCH, the UE corresponds to a new PUSCH according to the new equation.
  • the transmit power may be allocated, and when there is remaining transmit power, the remaining transmit power may be allocated for the first PUSCH transmission.
  • the transmission power is defined for all the first PUSCH transmissions based on the remaining power excluding the second PUSCH transmission power, or ii) only for the interval in which the overlap is made.
  • the transmission power is based on the remaining power except for the second PUSCH transmission power, and the equation for Equation 1 or the new PUSCH transmission power is normally defined in the remaining sections, the first PUSCH transmission power may be allocated according to the new equation. .
  • the transmission power is allocated on the basis of the remaining power except for the second PUSCH transmission power only for the symbols after the symbol at which the overlap is started, and in the remaining intervals, Equation 1 or the equation for the new PUSCH transmission power may be normally defined.
  • the first PUSCH transmission power may be allocated according to the new equation.
  • the UE is based on a PUSCH mapping type (ie, mapping type A vs. mapping type B) defined in 3GPP TS 38.214.
  • mapping type A mapping type A
  • mapping type B mapping type B
  • mapping type B based PUSCH transmission it is possible to preferentially transmit the mapping type B based PUSCH transmission to the mapping type A based PUSCH transmission. That is, when PUSCH transmissions of different mapping types are overlapped in whole or in part in a time-domain in one UE, the UE transmits the priority with respect to the mapping type B-based PUSCH and transmits the mapping type A-based PUSCH. May drop or allocate transmit power preferentially for the mapping type B based PUSCH and allocate the remaining power for other PUSCH (ie, mapping type A based PUSCH) transmission.
  • the UE may preferentially transmit the mapping type A based PUSCH transmission compared to the mapping type B based PUSCH transmission.
  • the specific method of determining the PUSCH transmission priority based on the mapping type may be applied in the same manner as the embodiments described in the first to third embodiments, and the detailed embodiment will be omitted.
  • the base station may signal the configuration information related to the PUSCH transmission priority rule according to the plurality of PUSCH transmission collision scenarios described above for each of the above-described embodiments.
  • the base station sets higher priority PUSCH configuration information that should be transmitted first by the corresponding UE and sets it to a higher layer. It may be transmitted to the corresponding terminal through signaling or physical layer control signaling.
  • the base station may set the priority or priority level configuration information for the PUSCH collision between the uplink grant and the dynamic uplink grant configured as in the second embodiment and transmit the same through the higher layer signaling. have.
  • Priority means priority for PUSCH transmission, which can be defined as any high, medium, low level, etc., and the priority level is a numerical value. That is, a specific constant is mapped to the priority of each PUSCH transmission, and may be set / indicated by the base station as an arbitrary natural number or an integer greater than or equal to zero, and the UE maps the priority level mapped for each PUSCH transmission. By comparing the values, PUSCH transmission having a higher priority among PUSCH transmissions with collision may be determined. For example, the UE may be defined such that a PUSCH having a higher priority level or a PUSCH having a lower priority level is determined by a PUSCH transmission having a higher priority.
  • the base station may set the priority or priority level of the configured grant-based PUSCH through higher layer signaling or ConfiguredGrantConfig , which is configured for higher layer signaling for transmitting uplink grant information.
  • the UE may preferentially transmit a PUSCH having a higher priority or a PUSCH having a higher priority level according to the corresponding priority or priority level configuration information.
  • the UE preferentially transmits the PUSCH for the uplink grant according to the second embodiment and, conversely, the priority for the configured uplink grant.
  • the priority level is set low, the dynamic uplink grant-based PUSCH may be preferentially transmitted.
  • the priority or priority level may be defined to be indicated through physical layer control signaling, that is, a dynamic uplink grant.
  • a priority or priority level for the corresponding grant-based PUSCH may be configured through higher layer signaling.
  • a corresponding grant for each PUSCH transmission may be set. It may be defined to dynamically indicate a priority or priority level of a corresponding PUSCH through a dynamic grant, that is, a UL grant DCI format transmitted through a PDDCH.
  • the priority level indication value may be compared to define the priority of the corresponding PUSCH transmissions in the terminal.
  • a base station when collision occurs between PUSCH transmissions indicated by the dynamic uplink grant in Embodiments 1 to 4, or when collision occurs between a dynamic uplink grant based PUSCH transmission and a configured uplink grant based PUSCH transmission, a base station May transmit the priority or priority level indication information for the PUSCH transmission based on the corresponding dynamic uplink in the corresponding uplink grant.
  • the UE may determine the PUSCH transmission priority based on the PUSCH transmission priority described in the above-described embodiments 1 to 4 according to the value.
  • priority or priority level between PUSCH transmissions may be separately indicated through separate physical layer control signaling for each slot or slot group.
  • whether the priority or priority level information region is indicated through the corresponding physical layer control signaling may be set by the base station through UE-specific or cell-specific higher layer signaling.
  • the UE when priority or priority level information is set / instructed through higher layer signaling or physical layer control signaling, when there is a collision between any PUSCH transmissions, the UE may have higher priority or higher priority according to the corresponding configuration / instruction information.
  • the PUSCH of the level may be transmitted preferentially.
  • the UE may define the priority rule defined in the above-described Embodiments 1 to 4 as a default operation and perform PUSCH transmission based on this.
  • the present invention may be applied to all cases in which priority between corresponding PUSCH transmissions is determined in the form of all combinations of the above-described embodiments 1 to 4.
  • FIG. 14 is a flowchart illustrating a method of transmitting an uplink data channel by a terminal in this embodiment.
  • a terminal receives first resource allocation information for a first uplink data channel and second resource allocation information for a second uplink data channel from a base station, respectively.
  • first resource allocation information for a first uplink data channel and second resource allocation information for a second uplink data channel from a base station, respectively.
  • the transmission power may be allocated to one of the priorities, and the transmission power of the other may be adjusted.
  • Adjusting the transmit power for the other one may be performed by first assigning transmit power to one of the first and second uplink data channels and allocating the remaining transmit power to the other or zeroing the transmit power to zero. It may be to drop the remaining uplink data channel transmission.
  • the remaining uplink data channel transmission is dropped.
  • the remaining uplink data channel transmission can be performed by allocating the remaining transmit power only within the symbol overlapping the link data channels in time or after all symbols and all symbols after the overlapping symbol, or with the transmit power zero. You can drop it.
  • the priority setting method may include priority setting methods according to the first to fourth embodiments, for example, a time-duration-based priority setting method, an uplink grant reception priority-based priority setting method, An uplink grant reception timing based priority setting method and a mapping type based priority setting method may be provided.
  • the first and second uplink data channels when the transmission power is preferentially allocated to one of the first and second uplink data channels, the first and second uplink data channels
  • the transmit power may be allocated to the uplink data channel having the shortest duration or the longest duration among the durations.
  • a second PUSCH transmission having a short transmission duration in a time-domain is allocated. Priority is given, and accordingly, the first PUSCH transmission except for the second PUSCH may be dropped.
  • the UE preferentially provides the equation 1 or the new PUSCH for the second PUSCH.
  • the PUSCH transmission power may be allocated according to the new equation, and when there is remaining transmission power, the remaining transmission power may be allocated for the first PUSCH transmission.
  • step S1410 of receiving first and second resource allocation information from the base station one of the first and second resource allocation information is determined.
  • the first downlink control channel may be received from the base station, and the other of the first and second resource allocation information may be received from the base station through one of the higher layer signaling and the higher layer signaling + the second downlink control channel.
  • the transmission power is preferentially allocated to one of the first and second uplink data channels
  • the transmission power is preferentially allocated to the uplink data channel corresponding to the resource allocation information received through the first downlink control channel
  • the transmission power may be preferentially allocated to an uplink data channel corresponding to the resource allocation information received through one of the higher layer signaling and the higher layer signaling + second downlink control channel.
  • step S1410 of receiving first and second resource allocation information from the base station one of the first and second resource allocation information is received from the base station through the first upper layer signaling and the other is the second higher layer signaling. It can be received from the base station through the + downlink control channel.
  • the transmission power is preferentially allocated to one of the first and second uplink data channels
  • the transmission power is preferentially allocated to the uplink data channel corresponding to the resource allocation information received through the first upper layer signaling.
  • the transmission power may be preferentially allocated to an uplink data channel corresponding to the resource allocation information received through the second upper layer signaling + downlink control channel.
  • the UE when a collision occurs between uplink grant-based first PUSCH transmission and grant-free second PUSCH transmission in one UE, the UE may be configured to transmit a second PUSCH transmission that is grant-free PUSCH transmission. Priority can be given to the first PUSCH transmission, except for the second PUSCH.
  • the UE when uplink grant-based PUSCH transmission and grant-free based PUSCH transmission are allocated, the UE preferentially calculates Equation 1 or new PUSCH transmission power for the grant-free based second PUSCH. If the equation is defined, the PUSCH transmission power may be allocated according to the new equation, and if there is remaining transmission power, the remaining transmission power may be allocated for the uplink grant-based first PUSCH transmission.
  • priority may be defined according to a corresponding grant type.
  • grant based on type 1 configured PUSCH transmission may be preferred to grant based on type 2 grant PUSCH, or conversely, type 2 configured based on grant PUSCH transmission may be preferred to type 1 configured grant based PUSCH transmission.
  • the specific PUSCH transmission method according to this may follow the above description.
  • the uplink grant reception timing based priority setting method when the transmission power is preferentially allocated to one of the first and second uplink data channels, the reception timing of the first and second resource allocation information is determined. Accordingly, it is possible to preferentially allocate transmit power to one of the first and second uplink data channels.
  • the transmission power may be preferentially allocated to the uplink data channel corresponding to the resource allocation information having the latest reception timing among the first and second resource allocation information.
  • the transmission power may be preferentially allocated to the uplink data channel corresponding to the resource allocation information having the latest reception timing.
  • the terminal when a collision occurs between a first PUSCH transmission and a second PUSCH transmission in one terminal, the terminal gives priority to a second PUSCH transmission recently receiving an uplink grant for the corresponding PUSCH. Accordingly, the first PUSCH transmission except for the second PUSCH may be dropped.
  • the UE when a corresponding equation (1) or a new PUSCH transmission power is defined for a second PUSCH transmission recently receiving an uplink grant for the corresponding PUSCH, the UE corresponds to a new PUSCH according to the new equation.
  • the transmit power may be allocated, and when there is remaining transmit power, the remaining transmit power may be allocated for the first PUSCH transmission.
  • mapping type based priority setting method when the transmission power is preferentially allocated to one of the first and second uplink data channels, according to the mapping type of the first and second uplink data channels. Transmission power may be allocated to one of the first and second uplink data channels first.
  • the first and second uplink data channels When allocating transmit power to one of the first and second uplink data channels preferentially, the first and second uplink data channels based on the priority setting information received through the higher layer signaling or the downlink control channel.
  • the transmission power may be allocated to one of them first.
  • the priority setting information may indicate one of the following schemes.
  • the transmission power is preferentially allocated to one of the first and second uplink data channels and the priority setting information is not received, the first and second uplink data according to the predefined priority or the default priority. Transmit power may be allocated to one of the channels preferentially.
  • 15 is a flowchart of a method for a base station to receive an uplink data channel in this embodiment.
  • the base station transmits first and second resource allocation information to the terminal for the first and second uplink data channels (S1510), and the first, When the first and second uplink data channels are to be transmitted at least partially overlapping in time based on the resource allocation information, one of the first and second uplink data channels is preferentially allocated with transmission power and the other one. And receiving an uplink data channel having an adjusted transmit power for the uplink data channel (S1520).
  • Adjusting the transmit power for the other one may be performed by first assigning transmit power to one of the first and second uplink data channels and allocating the remaining transmit power to the other or zeroing the transmit power to zero. It may be to drop the remaining uplink data channel transmission.
  • the remaining uplink data channel transmission is dropped.
  • the remaining uplink data channel transmission can be performed by allocating the remaining transmit power only within the symbol overlapping the link data channels in time or after all symbols and all symbols after the overlapping symbol, or with the transmit power zero. You can drop it.
  • the priority setting method includes priority setting methods according to the first to fourth embodiments, for example, a time-duration-based priority setting method and an uplink grant reception status.
  • the shortest duration of the durations of the first and second uplink data channels among the first and second uplink data channels or Transmit power may be preferentially allocated to the uplink data channel of the longest duration.
  • step S1510 of transmitting the first and second resource allocation information to the terminal one of the first and the second resource allocation information is first transmitted.
  • the terminal may be transmitted to the terminal through a downlink control channel, and the other one of the first and second resource allocation information may be transmitted to the terminal through one of upper layer signaling and upper layer signaling + second downlink control channel.
  • Transmit power is preferentially allocated to an uplink data channel corresponding to the resource allocation information received through the first downlink control channel among the first and second uplink data channels, or higher layer signaling and higher layer signaling + second Transmit power may be preferentially allocated to an uplink data channel corresponding to resource allocation information received through one of the downlink control channels.
  • step S1510 transmitting the first and second resource allocation information to the terminal, one of the first and second resource allocation information is transmitted to the terminal through the first higher layer signaling and the other is the second higher layer signaling. It can be transmitted to the terminal through the + downlink control channel.
  • the transmission power is preferentially allocated to one of the first and second uplink data channels
  • the transmission power is preferentially allocated to the uplink data channel corresponding to the resource allocation information received through the first upper layer signaling.
  • the transmission power may be preferentially allocated to an uplink data channel corresponding to the resource allocation information received through the second upper layer signaling + downlink control channel.
  • transmit power is preferentially allocated to one of the first and second uplink data channels according to the reception timing of the first and second resource allocation information. Can be.
  • the transmission power may be preferentially allocated to the uplink data channel corresponding to the resource allocation information having the latest reception timing among the first and second resource allocation information.
  • the transmission power may be preferentially allocated to the uplink data channel corresponding to the resource allocation information having the latest reception timing.
  • transmit power may be preferentially allocated to one of the first and second uplink data channels according to the mapping type of the first and second uplink data channels.
  • Transmit power may be preferentially allocated to one of the first and second uplink data channels based on the priority setting information received through the higher layer signaling or the downlink control channel.
  • the priority setting information may indicate one of the following schemes.
  • the transmission power is preferentially allocated to one of the first and second uplink data channels and the priority setting information is not received, the first and second uplink data according to the predefined priority or the default priority. Transmit power may be allocated to one of the channels preferentially.
  • 16 is a diagram illustrating a configuration of a base station 1600 according to another embodiment.
  • a base station 1600 includes a controller 1610, a transmitter 1620, and a receiver 1630.
  • the controller 1610 controls the overall operation of the base station 1600 according to the method for transmitting and receiving the uplink data channel in the next-generation wireless network required to carry out the present invention described above.
  • the transmitter 1620 and the receiver 1630 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention.
  • the base station 1600 transmits the first and second resource allocation information to the terminal for the first and second uplink data channels, respectively, 1620, and the first and second resource allocation information based on the first and second resource allocation information.
  • uplink data channels are to be transmitted at least partially overlapped in time
  • uplink data channel uplink is allocated to one of the first and second uplink data channels and the transmit power is adjusted to the other one.
  • a receiver 1630 for receiving the link data channel.
  • Adjusting the transmit power for the other one may be performed by first assigning transmit power to one of the first and second uplink data channels and allocating the remaining transmit power to the other or zeroing the transmit power to zero. It may be to drop the remaining uplink data channel transmission.
  • the remaining uplink data channel transmission is dropped.
  • the remaining uplink data channel transmission can be performed by allocating the remaining transmit power only within the symbol overlapping the link data channels in time or after all symbols and all symbols after the overlapping symbol, or with the transmit power zero. You can drop it.
  • the priority setting method includes priority setting methods according to the first to fourth embodiments, for example, a time-duration-based priority setting method and an uplink grant reception status.
  • the shortest duration of the durations of the first and second uplink data channels among the first and second uplink data channels or Transmit power may be preferentially allocated to the uplink data channel of the longest duration.
  • the transmitter 1620 transmits one of the first and second resource allocation information to the terminal through the first downlink control channel.
  • the other one of the 2 resource allocation information may be transmitted to the terminal through one of higher layer signaling and higher layer signaling + second downlink control channel.
  • Transmit power is preferentially allocated to an uplink data channel corresponding to the resource allocation information received through the first downlink control channel among the first and second uplink data channels, or higher layer signaling and higher layer signaling + second Transmit power may be preferentially allocated to an uplink data channel corresponding to resource allocation information received through one of the downlink control channels.
  • the transmitter 1620 may transmit one of the first and second resource allocation information to the terminal through the first higher layer signaling and the other to the terminal through the second higher layer signaling + downlink control channel.
  • the transmission power is preferentially allocated to one of the first and second uplink data channels
  • the transmission power is preferentially allocated to the uplink data channel corresponding to the resource allocation information received through the first upper layer signaling.
  • the transmission power may be preferentially allocated to an uplink data channel corresponding to the resource allocation information received through the second upper layer signaling + downlink control channel.
  • transmit power is preferentially allocated to one of the first and second uplink data channels according to the reception timing of the first and second resource allocation information. Can be.
  • the transmission power may be preferentially allocated to the uplink data channel corresponding to the resource allocation information having the latest reception timing among the first and second resource allocation information.
  • the transmission power may be preferentially allocated to the uplink data channel corresponding to the resource allocation information having the latest reception timing.
  • transmit power may be preferentially allocated to one of the first and second uplink data channels according to the mapping type of the first and second uplink data channels.
  • Transmit power may be preferentially allocated to one of the first and second uplink data channels based on the priority setting information received through the higher layer signaling or the downlink control channel.
  • the priority setting information may indicate one of the following schemes.
  • the transmission power is preferentially allocated to one of the first and second uplink data channels and the priority setting information is not received, the first and second uplink data according to the predefined priority or the default priority. Transmit power may be allocated to one of the channels preferentially.
  • FIG. 17 is a diagram illustrating a configuration of a user terminal 1700 according to another embodiment.
  • a user terminal 1700 includes a receiver 1710, a controller 1720, and a transmitter 1730.
  • the transmitter 1730 transmits uplink control information, data, and a message to a base station through a corresponding channel.
  • the transmitter 1730 may transmit uplink data based on uplink data resource allocation information.
  • the receiver 1710 receives downlink control information, data, and a message from a base station through a corresponding channel.
  • controller 1720 controls the overall operation of the user terminal 1700 according to the method for transmitting and receiving the uplink data channel in the next-generation wireless network required to perform the above-described present invention.
  • the user terminal 1700 may receive a first and second resource allocation information for the first and second uplink data channels from the base station, respectively, and the receiver 1710 and the first and second resource allocation information based on the first and second resource allocation information.
  • the controller 1720 is configured to allocate the transmission power to one of the first and second uplink data channels and to adjust the transmission power to the other one. It includes.
  • the controller 1720 adjusts the transmission power of the other one by first assigning the transmission power to one of the first and second uplink data channels and assigning the remaining transmission power to the other or zeroing the transmission power.
  • the remaining uplink data channel transmission can be dropped by zeroing the transmission power.
  • the controller 1720 drops the remaining uplink data channel transmissions. Allocate only the first and second uplink data channels in time or all symbols after the overlapping symbol, all remaining symbols for all symbols, or zero the transmit power with zero transmit power and the remaining transmit power to zero.
  • the uplink data channel transmission may be dropped.
  • the priority setting method may include priority setting methods according to the first to fourth embodiments, for example, a time-duration-based priority setting method, an uplink grant reception priority-based priority setting method, An uplink grant reception timing based priority setting method and a mapping type based priority setting method may be provided.
  • the transmission power may be allocated to the uplink data channel having the shortest duration or the longest duration among the durations of the second uplink data channels.
  • a second PUSCH transmission having a short transmission duration in a time-domain is allocated. Priority is given, and accordingly, the first PUSCH transmission except for the second PUSCH may be dropped.
  • the UE preferentially provides the equation 1 or the new PUSCH for the second PUSCH.
  • the PUSCH transmission power may be allocated according to the new equation, and when there is remaining transmission power, the remaining transmission power may be allocated for the first PUSCH transmission.
  • the receiving unit receives one of the first and second resource allocation information from the base station through the first downlink control channel, and the first and second resources.
  • the other one of the allocation information may be received from the base station through one of higher layer signaling and higher layer signaling + second downlink control channel.
  • the controller 1720 preferentially allocates transmission power to one of the first and second uplink data channels
  • the controller 1720 preferentially assigns the uplink data channel corresponding to the resource allocation information received through the first downlink control channel.
  • Transmission power may be allocated, or power may be preferentially allocated to an uplink data channel corresponding to resource allocation information received through one of higher layer signaling and higher layer signaling + second downlink control channel.
  • the receiving unit 1710 may receive one of the first and second resource allocation information from the base station through the first upper layer signaling and the other from the base station through the second higher layer signaling + downlink control channel. .
  • the control unit 1720 preferentially transmit power to an uplink data channel corresponding to the resource allocation information received through the first upper layer signaling. Transmit power may be allocated to the uplink data channel corresponding to the resource allocation information received through the second higher layer signaling + downlink control channel.
  • the UE when a collision occurs between uplink grant-based first PUSCH transmission and grant-free second PUSCH transmission in one UE, the UE may be configured to transmit a second PUSCH transmission that is grant-free PUSCH transmission. Priority can be given to the first PUSCH transmission, except for the second PUSCH.
  • the UE when uplink grant-based PUSCH transmission and grant-free based PUSCH transmission are allocated, the UE preferentially calculates Equation 1 or new PUSCH transmission power for the grant-free based second PUSCH. If the equation is defined, the PUSCH transmission power may be allocated according to the new equation, and if there is remaining transmission power, the remaining transmission power may be allocated for the uplink grant-based first PUSCH transmission.
  • priority may be defined according to a corresponding grant type.
  • grant based on type 1 configured PUSCH transmission may be preferred to grant based on type 2 grant PUSCH, or conversely, type 2 configured based on grant PUSCH transmission may be preferred to type 1 configured grant based PUSCH transmission.
  • the specific PUSCH transmission method according to this may follow the above description.
  • the control unit 1720 allocates transmission power to one of the first and second uplink data channels preferentially, the first and second resources The transmission power may be preferentially allocated to one of the first and second uplink data channels according to the reception timing of the allocation information.
  • the controller 1720 may preferentially allocate transmit power to an uplink data channel corresponding to the resource allocation information having the latest reception timing among the first and second resource allocation information.
  • the terminal when a collision occurs between a first PUSCH transmission and a second PUSCH transmission in one terminal, the terminal gives priority to a second PUSCH transmission recently receiving an uplink grant for the corresponding PUSCH. Accordingly, the first PUSCH transmission except for the second PUSCH may be dropped.
  • the UE when a corresponding equation (1) or a new PUSCH transmission power is defined for a second PUSCH transmission recently receiving an uplink grant for the corresponding PUSCH, the UE corresponds to a new PUSCH according to the new equation.
  • the transmit power may be allocated, and when there is remaining transmit power, the remaining transmit power may be allocated for the first PUSCH transmission.
  • the mapping type based priority setting method when the control unit 1720 allocates transmission power to one of the first and second uplink data channels preferentially, the first and second uplink data may be used.
  • the transmission power may be allocated to one of the first and second uplink data channels according to the mapping type of the channels.
  • the controller 1720 preferentially allocates transmission power to one of the first and second uplink data channels, the controller 1720 based on the priority setting information received through the higher layer signaling or the downlink control channel. Transmit power may be allocated to one of the two uplink data channels preferentially.
  • the priority setting information may indicate one of the following schemes.
  • the controller 1720 When the control unit 1720 does not receive the priority setting information when allocating the transmission power to one of the first and second uplink data channels, the controller 1720 according to the predefined priority or the default priority For example, the transmission power may be allocated to one of the second uplink data channels first.
  • uplink data channels can be efficiently transmitted in various cases in which a plurality of uplink data channel transmissions simultaneously occur in one terminal in a next generation wireless network.
  • the above embodiments provide a priority-based PUSCH transmission power allocation method and a transmission operation of the terminal when a plurality of PUSCH transmissions occur simultaneously in one terminal, but the present invention is not limited thereto.
  • the present invention includes a priority based PUSCH transmission power allocation method and a transmission operation of the terminal when a plurality of uplink transmissions occur simultaneously in one terminal.
  • the plurality of uplink transmissions may include PUCCH and PUSCH, PUCCH and PUCCH, PUSCH and SRS, and PUCCH and SRS.
  • the above-described embodiments may be implemented through various means.
  • the embodiments may be implemented by hardware, firmware, software, or a combination thereof.
  • the method according to the embodiments may include one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), FPGAs. (Field Programmable Gate Arrays), a processor, a controller, a microcontroller, a microprocessor, and the like.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • a processor a controller, a microcontroller, a microprocessor, and the like.
  • the method according to the embodiments may be implemented in the form of an apparatus, procedure, or function for performing the functions or operations described above.
  • the software code may be stored in a memory unit and driven by a processor.
  • the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
  • system generally refer to computer-related entity hardware, hardware and software. May mean a combination, software, or running software.
  • the aforementioned components may be, but are not limited to, a process driven by a processor, a processor, a controller, a control processor, an object, an execution thread, a program, and / or a computer.
  • an application running on a controller or processor and a controller or processor can be components.
  • One or more components can reside within a process and / or thread of execution and a component can be located on one system or deployed on more than one system.

Abstract

Les modes de réalisation de la présente invention concernent un procédé de transmission d'un canal de données de liaison montante pour prendre en charge des communications ultra-fiables et à faible latence (URLLC) et un service à large bande mobile amélioré (eMBB) dans un accès sans fil de nouvelle génération/5G, et un dispositif associé.
PCT/KR2019/003707 2018-03-30 2019-03-29 Procédé et dispositif de transmission d'un canal de commande de liaison montante WO2019190264A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/043,429 US11968671B2 (en) 2018-03-30 2019-03-29 Method and device for transmitting uplink data channel
CN201980024002.5A CN111937470B (zh) 2018-03-30 2019-03-29 用于传输上行数据信道的方法和设备

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2018-0037387 2018-03-30
KR20180037387 2018-03-30
KR1020190035586A KR102298009B1 (ko) 2018-03-30 2019-03-28 상향링크 데이터 채널을 전송하는 방법 및 장치
KR10-2019-0035586 2019-03-28

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