WO2021066311A1 - Procédé de réception de pdcch, équipement utilisateur, dispositif et support de stockage, ainsi que procédé de transmission de pdcch et station de base - Google Patents

Procédé de réception de pdcch, équipement utilisateur, dispositif et support de stockage, ainsi que procédé de transmission de pdcch et station de base Download PDF

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Publication number
WO2021066311A1
WO2021066311A1 PCT/KR2020/010219 KR2020010219W WO2021066311A1 WO 2021066311 A1 WO2021066311 A1 WO 2021066311A1 KR 2020010219 W KR2020010219 W KR 2020010219W WO 2021066311 A1 WO2021066311 A1 WO 2021066311A1
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Prior art keywords
pdcch
monitoring
span
spans
slot
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PCT/KR2020/010219
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English (en)
Korean (ko)
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이현호
배덕현
안준기
김선욱
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엘지전자 주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • H04W72/12—Wireless traffic scheduling

Definitions

  • This specification relates to a wireless communication system.
  • eMBB enhanced mobile broadband
  • RAT legacy radio access technology
  • massive machine type communication for providing various services anytime, anywhere by connecting a plurality of devices and objects to each other is one of the major issues to be considered in next-generation communication.
  • a method for receiving a physical downlink control channel (PDCCH) by a user equipment (UE) in a wireless communication system includes: receiving a configuration related to the PDCCH; And performing PDCCH monitoring for reception of the PDCCH in M monitoring spans in the slot based on the setting, where M>1.
  • a user equipment for receiving a physical downlink control channel (PDCCH) in a wireless communication system.
  • the user equipment includes: at least one transceiver; At least one processor; And at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations.
  • the operations include: receiving a configuration related to the PDCCH; And performing PDCCH monitoring for reception of the PDCCH in M monitoring spans in the slot based on the setting, where M>1.
  • Performing the PDCCH monitoring based on the maximum number of PDCCH candidates that can be monitored by the UE in one monitoring span and the maximum number of non-overlapping control channel elements (CCEs), the slot And determining PDCCH candidates to be skipped in the PDCCH monitoring among PDCCH candidates belonging to the first N monitoring spans of. Determining the PDCCH candidates to be skipped in the PDCCH monitoring is performed only for the first N monitoring spans, where N is a predetermined positive integer.
  • an apparatus for user equipment is provided.
  • the device is; At least one processor; And at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations.
  • the operations include: receiving a configuration related to a physical downlink control channel (PDCCH); And performing PDCCH monitoring for reception of the PDCCH in M monitoring spans in the slot based on the setting, where M>1.
  • PDCCH physical downlink control channel
  • Performing the PDCCH monitoring based on the maximum number of PDCCH candidates that can be monitored by the UE in one monitoring span and the maximum number of non-overlapping control channel elements (CCEs), the slot And determining PDCCH candidates to be skipped in the PDCCH monitoring among PDCCH candidates belonging to the first N monitoring spans of. Determining the PDCCH candidates to be skipped in the PDCCH monitoring is performed only for the first N monitoring spans, where N is a predetermined positive integer.
  • a computer-readable storage medium stores at least one computer program including instructions that, when executed by at least one processor, cause the at least one processor to perform operations for a user equipment.
  • the operations include: receiving a configuration related to a physical downlink control channel (PDCCH); And performing PDCCH monitoring for reception of the PDCCH in M monitoring spans in the slot based on the setting, where M>1.
  • Performing the PDCCH monitoring based on the maximum number of PDCCH candidates that can be monitored by the UE in one monitoring span and the maximum number of non-overlapping control channel elements (CCEs), the slot And determining PDCCH candidates to be skipped in the PDCCH monitoring among PDCCH candidates belonging to the first N monitoring spans of. Determining the PDCCH candidates to be skipped in the PDCCH monitoring is performed only for the first N monitoring spans, where N is a predetermined positive integer.
  • a method for a base station to transmit a physical downlink control channel (PDCCH) to a user equipment (UE) in a wireless communication system.
  • the method includes: transmitting a configuration related to the PDCCH; And transmitting at least one PDCCH in M monitoring spans in the slot based on the setting, where M>1.
  • a base station for transmitting a physical downlink control channel (PDCCH) to a user equipment (UE) in a wireless communication system.
  • the base station includes: at least one transceiver; At least one processor; And at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations.
  • the operations include: transmitting a configuration related to the PDCCH; And transmitting at least one PDCCH in M monitoring spans in the slot based on the setting, where M>1.
  • PDCCH candidates to be monitored by the UE may be determined based on the maximum number.
  • the PDCCH candidates to be skipped in the PDCCH monitoring may be the remaining PDCCH candidates excluding the PDCCH candidates to be monitored by the UE.
  • the remaining monitoring spans other than the first N monitoring spans among the M monitoring spans it may be determined that all PDCCH candidates belonging to the remaining monitoring spans are PDCCH candidates to be monitored by the UE. have.
  • the remaining monitoring span it may always be determined that all PDCCH candidates belonging to the remaining monitoring span are PDCCH candidates to be monitored by the UE.
  • each of the M monitoring spans may be a set of consecutive OFDM symbols in the slot.
  • a report on the maximum number of PDCCH candidates and the maximum number of non-overlapping CCEs, which can be monitored by the UE per monitoring span, may be provided by the UE to the base station.
  • performing the PDCCH monitoring is based on receiving a setting instructing to perform PDCCH monitoring based on a PDCCH monitoring capability for each monitoring span for a serving cell, the slot on the serving cell. It may include applying the maximum numbers to the first N monitoring spans of.
  • transmitting the at least one PDCCH is based on transmitting to the UE a configuration instructing to perform PDCCH monitoring based on a PDCCH monitoring capability for each monitoring span for a serving cell. It may include applying the maximum number to the first N monitoring spans of the slot on the serving cell.
  • wireless communication signals can be efficiently transmitted/received. Accordingly, the overall throughput of the wireless communication system can be increased.
  • a delay/delay occurring during wireless communication between communication devices may be reduced.
  • FIG. 1 shows an example of communication system 1 to which implementations of the present specification are applied;
  • FIG. 2 is a block diagram showing examples of communication devices capable of performing a method according to the present specification
  • FIG. 3 shows another example of a wireless device capable of performing implementation(s) of the present specification
  • 3GPP 3 rd generation partnership project
  • FIG. 6 illustrates slot structures that can be used in a 3GPP-based system
  • FIG. 7 shows an example of PDSCH time domain resource allocation by PDCCH and an example of PUSCH time domain resource allocation by PDCCH;
  • HARQ-ACK hybrid automatic repeat request-acknowledgement
  • 10 and 11 illustrate a flow of a process for transmitting/receiving downlink control information based on some implementations of the present specification described above.
  • multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, and a single carrier frequency (SC-FDMA) system.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency
  • division multiple access MC-FDMA (multi carrier frequency division multiple access) system, and the like.
  • CDMA may be implemented in a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
  • UTRA Universal Terrestrial Radio Access
  • TDMA may be implemented in radio technologies such as Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Enhanced Data Rates for GSM Evolution (EDGE) (ie, GERAN), and the like.
  • OFDMA may be implemented in wireless technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (WiFi), IEEE 802.16 (WiMAX), IEEE802-20, evolved-UTRA (E-UTRA), and the like.
  • IEEE Institute of Electrical and Electronics Engineers
  • WiFi WiFi
  • WiMAX IEEE 802.16
  • E-UTRA evolved-UTRA
  • UTRA is a part of Universal Mobile Telecommunication System (UMTS)
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • 3GPP LTE employs OFDMA in downlink (DL) and SC-FDMA in uplink (UL).
  • LTE-advanced (LTE-A) is an evolved form of 3GPP LTE.
  • 3GPP LTE standard documents for example, 3GPP TS 36.211, 3GPP TS 36.212, 3GPP TS 36.213, 3GPP TS 36.321, 3GPP TS 36.300 and 3GPP TS 36.331 and the like
  • 3GPP NR standard documents for example, 3GPP TS 38.211, 3GPP TS 38.212, 3GPP TS 38.213, 3GPP TS 38.214, 3GPP TS 38.300, 3GPP TS 38.331, and the like may be referenced.
  • the expression "assumes" by the device may mean that the subject transmitting the channel transmits the channel so as to conform to the corresponding "assumption”.
  • the subject receiving the channel may mean that the channel is received or decoded in a form conforming to the corresponding “assuming” under the premise that the channel is transmitted to conform to the “assuming”.
  • the UE may be fixed or mobile, and various devices that transmit and/or receive user data and/or various control information by communicating with a base station (BS) belong to this.
  • the UE includes (Terminal Equipment), MS (Mobile Station), MT (Mobile Terminal), UT (User Terminal), SS (Subscribe Station), wireless device, PDA (Personal Digital Assistant), wireless modem. ), handheld device, etc.
  • a BS generally refers to a fixed station communicating with a UE and/or another BS, and exchanges various data and control information by communicating with the UE and other BSs.
  • BS may be referred to as other terms such as ABS (Advanced Base Station), NB (Node-B), eNB (evolved-NodeB), BTS (Base Transceiver System), Access Point (Access Point), PS (Processing Server).
  • the base station of UTRAN is called Node-B
  • the base station of E-UTRAN is called eNB
  • the base station of new radio access technology network is called gNB.
  • the base station is collectively referred to as a BS regardless of the type or version of the communication technology.
  • a node refers to a fixed point at which radio signals can be transmitted/received by communicating with the UE.
  • Various types of BSs can be used as nodes regardless of their name.
  • BS, NB, eNB, pico-cell eNB (PeNB), home eNB (HeNB), relay, repeater, etc. may be nodes.
  • the node may not have to be a BS.
  • it may be a radio remote head (RRH) or a radio remote unit (RRU).
  • RRH, RRU, etc. generally have a power level lower than the power level of the BS.
  • RRH or RRU or less, RRH/RRU is generally connected to the BS by a dedicated line such as an optical cable, so RRH/RRU and BS are generally compared to cooperative communication by BSs connected by wireless lines. By cooperative communication can be performed smoothly.
  • At least one antenna is installed in one node.
  • the antenna may mean a physical antenna, or an antenna port, a virtual antenna, or an antenna group. Nodes are also called points.
  • a cell refers to a certain geographic area in which one or more nodes provide communication services. Therefore, in this specification, communication with a specific cell may mean communication with a BS or a node that provides a communication service to the specific cell.
  • the downlink/uplink signal of a specific cell means a downlink/uplink signal from/to a BS or a node that provides a communication service to the specific cell.
  • a cell that provides uplink/downlink communication services to a UE is specifically referred to as a serving cell.
  • the channel state/quality of a specific cell refers to a channel state/quality of a channel or communication link formed between a BS or a node and a UE providing a communication service to the specific cell.
  • the UE determines the downlink channel state from a specific node, CRS(s) transmitted on the CRS (Cell-specific Reference Signal) resource allocated to the specific node by the antenna port(s) of the specific node, and / Or it can be measured using CSI-RS(s) transmitted on a Channel State Information Reference Signal (CSI-RS) resource.
  • CRS Cell-specific Reference Signal
  • the 3GPP-based communication system uses the concept of a cell to manage radio resources, and a cell associated with radio resources is distinguished from a cell in a geographic area.
  • the “cell” in the geographic area may be understood as coverage in which a node can provide a service using a carrier, and the “cell” of a radio resource is a bandwidth ( bandwidth, BW). Since downlink coverage, which is a range in which a node can transmit a valid signal and uplink coverage, which is a range in which a valid signal can be received from a UE, depends on the carrier that carries the signal, the node's coverage is used by the node. It is also associated with the coverage of the "cell" of the radio resource to be used. Thus, the term "cell” can sometimes be used to mean coverage of a service by a node, sometimes a radio resource, and sometimes a range within which a signal using the radio resource can reach a valid strength.
  • BW bandwidth
  • the 3GPP communication standard uses the concept of a cell to manage radio resources.
  • the term "cell" associated with radio resources is defined as a combination of downlink resources (DL resources) and uplink resources (UL resources), that is, a combination of a DL component carrier (CC) and a UL CC. .
  • the cell may be configured with a DL resource alone or a combination of a DL resource and a UL resource.
  • DL resources downlink resources
  • UL resources uplink resources
  • the cell may be configured with a DL resource alone or a combination of a DL resource and a UL resource.
  • the linkage between the carrier frequency of the DL resource (or, DL CC) and the carrier frequency of the UL resource (or UL CC) is indicated by system information Can be.
  • a combination of a DL resource and a UL resource may be indicated by a system information block type 2 (SIB2) linkage.
  • SIB2 system information block type 2
  • the carrier frequency may be the same as or different from the center frequency of each cell or CC.
  • CA carrier aggregation
  • the UE has only one radio resource control (RRC) connection with the network.
  • RRC radio resource control
  • One serving cell provides non-access stratum (NAS) mobility information at the time of RRC connection establishment/re-establishment/handover, and one serving cell Provides a security input when re-establishing an RRC connection/handover.
  • NAS non-access stratum
  • Pcell primary cell
  • the Pcell is a cell operating on a primary frequency at which the UE performs an initial connection establishment procedure or initiates a connection re-establishment procedure.
  • secondary cells may be configured to form a set of serving cells together with the Pcell.
  • Scell is a cell that can be set after RRC (Radio Resource Control) connection establishment is made, and provides additional radio resources in addition to the resources of a special cell (SpCell).
  • a carrier corresponding to a Pcell is called a downlink primary CC (DL PCC)
  • a carrier corresponding to a Pcell in uplink is called a UL primary CC (DL PCC).
  • a carrier corresponding to the Scell in downlink is referred to as a DL secondary CC (DL SCC)
  • a carrier corresponding to the Scell in uplink is referred to as a UL secondary CC (UL SCC).
  • the term SpCell refers to a Pcell of a master cell group (MCG) or a Pcell of a secondary cell group (SCG).
  • MCG master cell group
  • SCG secondary cell group
  • the MCG is a group of serving cells associated with a master node (eg, BS) and consists of SpCell (Pcell) and optionally one or more Scells.
  • the SCG is a subset of serving cells associated with the secondary node, and consists of a PSCell and zero or more Scells.
  • serving cells In the case of a UE in the RRC_CONNECTED state that is not set to CA or DC, there is only one serving cell composed of only Pcell. In the case of a UE in the RRC_CONNECTED state set to CA or DC, the term serving cells refers to a set of cells consisting of SpCell(s) and all Scell(s). In DC, two MAC entities, one medium access control (MAC) entity for MCG and one MAC entity for SCG, are configured in the UE.
  • MAC medium access control
  • a Pcell PUCCH group consisting of a Pcell and zero or more Scells and an Scell PUCCH group consisting of only Scell(s) may be configured.
  • an Scell (hereinafter referred to as a PUCCH cell) through which a PUCCH associated with a corresponding cell is transmitted may be configured.
  • the Scell indicated by the PUCCH Scell belongs to the Scell PUCCH group and PUCCH transmission of the related UCI is performed on the PUCCH Scell. PUCCH transmission of the related UCI is performed on the Pcell.
  • a UE receives information from a BS through a downlink (DL), and the UE transmits information to the BS through an uplink (UL).
  • the information transmitted and/or received by the BS and the UE includes data and various control information, and various physical channels exist according to the type/use of the information they transmit and/or receive.
  • 3GPP-based communication standards include downlink physical channels corresponding to resource elements carrying information originating from higher layers, and downlink physical channels corresponding to resource elements used by the physical layer but not carrying information originating from higher layers.
  • Link physical signals are defined.
  • a physical downlink shared channel (PDSCH), a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), etc. are downlink physical channels.
  • PBCH physical broadcast channel
  • PDCCH physical downlink control channel
  • a reference signal and a synchronization signal are defined as downlink physical signals.
  • a reference signal (RS) also referred to as a pilot, refers to a signal of a predefined special waveform that the BS and the UE know each other.
  • a demodulation reference signal For example, a demodulation reference signal (DMRS), a channel state information RS (CSI-RS), and the like are defined as a downlink reference signal.
  • 3GPP-based communication standards include uplink physical channels corresponding to resource elements carrying information originating from an upper layer, and uplink physical channels corresponding to resource elements used by the physical layer but not carrying information originating from an upper layer.
  • Link physical signals are defined.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • PRACH physical random access channel
  • DMRS demodulation reference signal
  • SRS sounding reference signal
  • PDCCH Physical Downlink Control CHannel
  • PDSCH Physical Downlink Shared CHannel
  • PUCCH Physical Uplink Control CHannel
  • PUSCH Physical Uplink Shared CHannel
  • PRACH Physical Random Access CHannel
  • UCI Uplink Control Information
  • uplink data time-frequency carrying a random access signal It means a set of REs.
  • the expression that the user equipment transmits/receives PUCCH/PUSCH/PRACH is used in the same sense as transmitting/receiving uplink control information/uplink data/arbitrary access signals on or through PUCCH/PUSCH/PRACH, respectively.
  • the expression that the BS transmits/receives PBCH/PDCCH/PDSCH is used in the same meaning as transmitting broadcast information/downlink control information/downlink data on or through PBCH/PDCCH/PDSCH, respectively.
  • radio resources eg, time-frequency resources
  • PUCCH/PUSCH/PDSCH resources radio resources scheduled or set by the BS for transmission or reception of PUCCH/PUSCH/PDSCH.
  • next-generation communication As more communication devices require a larger communication capacity, there is a need for improved mobile broadband communication compared to the existing radio access technology (RAT).
  • massive MTC which provides various services anytime, anywhere by connecting multiple devices and objects, is one of the major issues to be considered in next-generation communication.
  • a communication system design in consideration of a service/UE sensitive to reliability and latency is being discussed.
  • Introduction of the next-generation RAT in consideration of such advanced mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed.
  • 3GPP is conducting a study on the next-generation mobile communication system after EPC.
  • the technology is referred to as a new RAT (NR) or 5G RAT
  • NR new RAT
  • 5G RAT a system that uses or supports NR
  • a communication system 1 applied to the present specification includes a wireless device, a BS, and a network.
  • the wireless device refers to a device that performs communication using a wireless access technology (eg, 5G NR (New RAT), LTE (eg, E-UTRA)), and may be referred to as a communication/wireless/5G device.
  • wireless devices include robots 100a, vehicles 100b-1 and 100b-2, eXtended Reality (XR) devices 100c, hand-held devices 100d, and home appliances 100e. ), an Internet of Thing (IoT) device 100f, and an AI device/server 400.
  • the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing inter-vehicle communication, and the like.
  • the vehicle may include an Unmanned Aerial Vehicle (UAV) (eg, a drone).
  • UAV Unmanned Aerial Vehicle
  • XR devices include Augmented Reality (AR)/Virtual Reality (VR)/Mixed Reality (MR) devices. It can be implemented in the form of a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, and the like.
  • Portable devices may include smart phones, smart pads, wearable devices (eg, smart watches, smart glasses), computers (eg, notebook computers, etc.).
  • Home appliances may include TVs, refrigerators, washing machines, and the like.
  • IoT devices may include sensors, smart meters, and the like.
  • the BS and the network may be implemented as a wireless device, and a specific wireless device may operate as a BS/network node to another wireless
  • the wireless devices 100a to 100f may be connected to the network 300 through the BS 200.
  • AI Artificial Intelligence
  • the network 300 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network.
  • the wireless devices 100a to 100f may communicate with each other through the BS 200/network 300, but may communicate directly (e.g. sidelink communication) without passing through the BS/network.
  • the vehicles 100b-1 and 100b-2 may perform direct communication (e.g.
  • V2V Vehicle to Vehicle
  • V2X Vehicle to Everything
  • the IoT device eg, sensor
  • the IoT device may directly communicate with other IoT devices (eg, sensors) or other wireless devices 100a to 100f.
  • Wireless communication/connections 150a and 150b may be performed between the wireless devices 100a to 100f/BS 200 to the BS 200/wireless devices 100a to 100f.
  • wireless communication/connection may be performed through various wireless access technologies (eg, 5G NR) for uplink/downlink communication 150a and sidelink communication 150b (or D2D communication).
  • 5G NR wireless access technologies
  • the wireless device and the BS/wireless device may transmit/receive wireless signals to each other.
  • various configuration information setting processes for transmission/reception of radio signals various signal processing processes (e.g., channel encoding/decoding, modulation/demodulation, resources) Mapping/demapping, etc.), resource allocation process, etc. may be performed.
  • the first wireless device 100 and the second wireless device 200 may transmit and/or receive wireless signals through various wireless access technologies (eg, LTE and NR).
  • ⁇ the first wireless device 100, the second wireless device 200 ⁇ is the ⁇ wireless device 100x, BS 200 ⁇ and/or ⁇ wireless device 100x, wireless device 100x) of FIG. ⁇ Can be matched.
  • the first wireless device 100 includes one or more processors 102 and one or more memories 104, and may further include one or more transceivers 106 and/or one or more antennas 108.
  • the processor 102 controls the memory 104 and/or the transceiver 106 and may be configured to implement the functions, procedures, and/or methods described/suggested below.
  • the processor 102 may process information in the memory 104 to generate first information/signal, and then transmit a radio signal including the first information/signal through the transceiver 106.
  • the processor 102 may store information obtained from signal processing of the second information/signal in the memory 104 after receiving a radio signal including the second information/signal through the transceiver 106.
  • the memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102.
  • memory 104 may store software code including instructions for performing some or all of the processes controlled by processor 102, or performing procedures and/or methods described/suggested below.
  • the processor 102 and the memory 104 may be part of a communication modem/circuit/chip designed to implement a wireless communication technology (eg, LTE, NR).
  • the transceiver 106 may be connected to the processor 102 and may transmit and/or receive radio signals through one or more antennas 108.
  • Transceiver 106 may include a transmitter and/or a receiver.
  • the transceiver 106 may be mixed with an RF (Radio Frequency) unit.
  • a wireless device may mean a communication modem/circuit/chip.
  • the second wireless device 200 includes one or more processors 202 and one or more memories 204, and may further include one or more transceivers 206 and/or one or more antennas 208.
  • the processor 202 controls the memory 204 and/or the transceiver 206 and may be configured to implement the functions, procedures and/or methods described/suggested below.
  • the processor 202 may process information in the memory 204 to generate third information/signal, and then transmit a wireless signal including the third information/signal through the transceiver 206.
  • the processor 202 may receive the radio signal including the fourth information/signal through the transceiver 206 and then store information obtained from signal processing of the fourth information/signal in the memory 204.
  • the memory 204 may be connected to the processor 202 and may store various information related to the operation of the processor 202.
  • the memory 204 may store software code including instructions for performing some or all of the processes controlled by the processor 202, or performing the procedures and/or methods described/suggested below.
  • the processor 202 and the memory 204 may be part of a communication modem/circuit/chip designed to implement a wireless communication technology (eg, LTE, NR).
  • the transceiver 206 may be connected to the processor 202 and may transmit and/or receive radio signals through one or more antennas 208.
  • the transceiver 206 may include a transmitter and/or a receiver.
  • the transceiver 206 may be mixed with an RF unit.
  • a wireless device may mean a communication modem/circuit/chip.
  • one or more protocol layers may be implemented by one or more processors 102, 202.
  • one or more processors 102, 202 may be one or more layers (e.g., a physical (PHY) layer, a medium access control (MAC) layer, a radio link control (RLC) layer) , A packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer, and a functional layer such as a service data adaption protocol (SDAP) may be implemented.
  • PHY physical
  • MAC medium access control
  • RLC radio link control
  • PDCP packet data convergence protocol
  • RRC radio resource control
  • SDAP service data adaption protocol
  • One or more processors (102, 202) are one or more protocol data unit (protocol data unit, PDU) and / or one or more service data unit (service data unit, SDU) according to the function, procedure, proposal and / or method disclosed in this document. ) Can be created.
  • One or more processors 102, 202 may generate messages, control information, data, or information according to functions, procedures, suggestions and/or methods disclosed herein.
  • At least one processor (102, 202) is PDU, SDU, message, control information, data or signals containing information (e.g., baseband signals) in accordance with the functions, procedures, proposals and/or methods disclosed herein.
  • One or more processors (102, 202) may receive signals (e.g., baseband signals) from one or more transceivers (106, 206), and PDU, SDU according to the functions, procedures, proposals and/or methods disclosed herein. , Messages, control information, data or information can be obtained.
  • signals e.g., baseband signals
  • transceivers 106, 206
  • PDU Packet Data Unit
  • One or more of the processors 102 and 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer.
  • One or more of the processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • Firmware or software configured to perform the functions, procedures, suggestions and/or methods disclosed in this document is included in one or more processors 102, 202, or stored in one or more memories 104, 204, and 202).
  • the functions, procedures, proposals and or methods disclosed in this document may be implemented using firmware or software in the form of codes, instructions and/or sets of instructions.
  • One or more memories 104, 204 may be connected to one or more processors 102, 202, and may store various types of data, signals, messages, information, programs, codes, instructions and/or instructions.
  • One or more of the memories 104 and 204 may be composed of ROM, RAM, EPROM, flash memory, hard drive, registers, cache memory, computer readable storage media, and/or combinations thereof.
  • One or more memories 104 and 204 may be located inside and/or outside of one or more processors 102 and 202.
  • one or more memories 104, 204 may be connected to one or more processors 102, 202 through various technologies such as wired or wireless connection.
  • One or more transceivers 106 and 206 may transmit user data, control information, radio signals/channels, and the like mentioned in the methods and/or operation flow charts of this document to one or more other devices.
  • the one or more transceivers 106 and 206 may receive user data, control information, radio signals/channels, and the like, as mentioned in the functions, procedures, proposals, methods and/or operational flow charts, etc. disclosed herein from one or more other devices.
  • one or more transceivers 106, 206 may be coupled with one or more processors 102, 202, and may transmit and/or receive wireless signals.
  • one or more processors 102, 202 may control one or more transceivers 106, 206 to transmit user data, control information, or radio signals to one or more other devices.
  • one or more processors 102, 202 may control one or more transceivers 106, 206 to receive user data, control information, or radio signals from one or more other devices.
  • one or more transceivers (106, 206) may be connected to one or more antennas (108, 208), one or more transceivers (106, 206) through one or more antennas (108, 208) functions and procedures disclosed in this document. , It may be set to transmit and/or receive user data, control information, radio signals/channels, etc.
  • one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
  • One or more transceivers (106, 206) in order to process the received user data, control information, radio signal / channel, etc. using one or more processors (102, 202), the received radio signal / channel, etc. in the RF band signal. It can be converted into a baseband signal.
  • One or more transceivers 106 and 206 may convert user data, control information, radio signals/channels, etc. processed using one or more processors 102 and 202 from a baseband signal to an RF band signal.
  • one or more of the transceivers 106 and 206 may include (analog) oscillators and/or filters.
  • the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 of FIG. 2, and various elements, components, units/units, and/or modules It can be composed of (module).
  • the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional element 140.
  • the communication unit may include a communication circuit 112 and a transceiver(s) 114.
  • the communication circuit 112 may include one or more processors 102 and 202 of FIG. 2 and/or one or more memories 104 and 204.
  • the transceiver(s) 114 may include one or more transceivers 106, 206 and/or one or more antennas 108, 208 of FIG. 2.
  • the control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140 and controls all operations of the wireless device.
  • the control unit 120 may control the electrical/mechanical operation of the wireless device based on the program/code/command/information stored in the memory unit 130.
  • the control unit 120 transmits the information stored in the memory unit 130 to an external (eg, other communication device) through the communication unit 110 through a wireless/wired interface, or externally through the communication unit 110 (eg, Information received through a wireless/wired interface from another communication device) may be stored in the memory unit 130.
  • the additional element 140 may be configured in various ways depending on the type of wireless device.
  • the additional element 140 may include at least one of a power unit/battery, an I/O unit, a driving unit, and a computing unit.
  • wireless devices include robots (Fig. 1, 100a), vehicles (Fig. 1, 100b-1, 100b-2), XR equipment (Fig. 1, 100c), portable equipment (Fig. 1, 100d), and home appliances.
  • Fig. 1, 100e) IoT device
  • digital broadcasting UE hologram device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate/environment device, It may be implemented in the form of an AI server/device (Fig. 1, 400), BS (Fig. 1, 200), and a network node.
  • the wireless device can be used in a mobile or fixed place depending on the use-example/service.
  • various elements, components, units/units, and/or modules in the wireless devices 100 and 200 may be entirely interconnected through a wired interface, or at least some may be wirelessly connected through the communication unit 110.
  • the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and the first unit (eg, 130, 140) are connected through the communication unit 110.
  • the control unit 120 and the first unit eg, 130, 140
  • each element, component, unit/unit, and/or module in the wireless device 100 and 200 may further include one or more elements.
  • the controller 120 may be configured with one or more processor sets.
  • control unit 120 may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing processor, and a memory control processor.
  • memory unit 130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory. volatile memory) and/or a combination thereof.
  • At least one memory may store instructions or programs, and the instructions or programs are at least operably connected to the at least one memory when executed. It is possible to cause a single processor to perform operations according to some embodiments or implementations of the present disclosure.
  • a computer-readable storage medium may store at least one instruction or computer program, and the at least one instruction or computer program is executed by at least one processor. It is possible to cause a single processor to perform operations according to some embodiments or implementations of the present disclosure.
  • a processing device or apparatus may include at least one processor and at least one computer memory connectable to the at least one processor.
  • the at least one computer memory may store instructions or programs, and the instructions or programs, when executed, cause at least one processor to be operably connected to the at least one memory. It may be possible to perform operations according to embodiments or implementations.
  • the communication device of the present specification includes at least one processor; And at least one storing instructions that are operably connectable to the at least one processor and, when executed, cause the at least one processor to perform operations according to the example(s) of the present specification to be described later.
  • FIG. 4 shows an example of a frame structure usable in a 3GPP-based wireless communication system.
  • the structure of the frame of FIG. 4 is only an example, and the number of subframes, the number of slots, and the number of symbols in the frame may be variously changed.
  • OFDM numerology eg, subcarrier spacing, SCS
  • SCS subcarrier spacing
  • the (absolute time) duration of a time resource (eg, a subframe, a slot, or a transmission time interval (TTI)) consisting of may be set differently between aggregated cells, where the symbol is OFDM Symbol (or, cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) symbol), SC-FDMA symbol (or, discrete Fourier transform-spread-OFDM (discrete Fourier transform-spread-OFDM, DFT-s-OFDM) symbol)
  • CP-OFDM cyclic prefix-orthogonal frequency division multiplexing
  • SC-FDMA symbol or, discrete Fourier transform-spread-OFDM (discrete Fourier transform-spread-OFDM, DFT-s-OFDM) symbol
  • a symbol, an OFDM-based symbol, an OFDM symbol, a CP-OFDM symbol, and a DFT-s-OFDM symbol may be replaced with each other.
  • uplink and downlink transmissions are organized into frames.
  • Each half-frame consists of 5 subframes, and the period T sf of a single subframe is 1 ms.
  • Subframes are further divided into slots, and the number of slots in the subframe depends on the subcarrier spacing.
  • Each slot consists of 14 or 12 OFDM symbols based on a cyclic prefix. In a normal cyclic prefix (CP), each slot consists of 14 OFDM symbols, and in the case of an extended CP, each slot consists of 12 OFDM symbols.
  • the slots are n u s ⁇ ⁇ 0, ..., n subframe, u slot -1 ⁇ in increasing order within the subframe and n u s,f ⁇ ⁇ in increasing order within the frame. It is numbered 0, ..., n frame, u slot -1 ⁇ .
  • a slot contains a plurality of (eg, 14 or 12) symbols in the time domain.
  • a common resource block (common resource block, CRB) N start indicated by higher layer signaling (e.g., radio resource control (RRC) signaling), a, N size, grid u, x * N sc RB subcarriers and N subframe, u symb OFDM symbol of a resource grid (grid), starting from the grid is defined u.
  • N size,u grid,x is the number of resource blocks (RBs) in the resource grid
  • the subscript x is DL for downlink and UL for uplink.
  • N RB sc is the number of subcarriers per RB, and in a 3GPP-based wireless communication system, N RB sc is usually 12.
  • the carrier bandwidth N size,u grid for the subcarrier spacing setting u is given to the UE by higher layer parameters (eg, RRC parameters) from the network.
  • Each element in the resource grid for the antenna port p and the subcarrier spacing u is referred to as a resource element (RE), and one complex symbol may be mapped to each resource element.
  • RE resource element
  • Each resource element in the resource grid is uniquely identified by an index k in the frequency domain and an index l indicating a symbol position relative to a reference point in the time domain.
  • the RB is defined by 12 consecutive subcarriers in the frequency domain.
  • RBs may be classified into common resource blocks (CRBs) and physical resource blocks (PRBs).
  • CRBs are numbered from 0 upwards in the frequency domain for the subcarrier spacing setting u.
  • the center of subcarrier 0 of CRB 0 for subcarrier spacing setting u coincides with'point A', which is a common reference point for resource block grids.
  • PRBs are defined within a bandwidth part (BWP) and are numbered from 0 to N size BWP,i -1, where i is the number of the bandwidth part.
  • the BWP includes a plurality of consecutive RBs in the frequency domain.
  • the carrier may contain up to N (eg, 5) BWPs.
  • the UE may be configured to have more than one BWP on a given component carrier. Data communication is performed through an activated BWP, and only a predetermined number (eg, 1) of BWPs among the BWPs set to the UE may be activated on the corresponding carrier.
  • each slot is a self-contained structure that may include i) a DL control channel, ii) DL or UL data, and/or iii) a UL control channel.
  • a DL control channel hereinafter, a DL control region
  • M are each non-negative integer.
  • a resource region (hereinafter, referred to as a data region) between the DL control region and the UL control region may be used for DL data transmission or UL data transmission.
  • the symbols of a single slot can be divided into group(s) of consecutive symbols that can be used as DL, UL, or flexible.
  • information indicating how each of the symbols of the slot is used is referred to as a slot format.
  • the slot format may define which symbols in the slot are used for UL and which symbols are used for DL.
  • the BS may set a pattern for UL and DL allocation for the serving cell through higher layer (eg, RRC) signaling.
  • RRC higher layer
  • -NrofDownlinkSlots providing the number of consecutive full DL slots at the beginning of each DL-UL pattern, wherein the complete DL slot is a slot having only downlink symbols;
  • the remaining symbols that are neither set as DL symbols nor UL symbols are flexible symbols.
  • the UE that has received the configuration for the TDD DL-UL pattern that is, the TDD UL-DL configuration (eg, tdd-UL-DL-ConfigurationCommon , or tdd-UL-DLConfigurationDedicated ) through higher layer signaling, is slotted based on the configuration. Set the slot format for each slot across the fields.
  • the TDD UL-DL configuration eg, tdd-UL-DL-ConfigurationCommon , or tdd-UL-DLConfigurationDedicated
  • a predetermined number of combinations may be predefined as slot formats, and the predefined slot formats can be identified by slot format indexes, respectively.
  • I can.
  • the following table illustrates some of the predefined slot formats.
  • D denotes a DL symbol
  • U denotes a UL symbol
  • F denotes a flexible symbol.
  • the BS In order to inform which of the predefined slot formats is used in a specific slot, the BS provides a combination of a slot format applicable to a corresponding serving cell for each cell through higher layer (e.g., RRC) signaling for a set of serving cells. A set of them may be set, and the UE may be configured to monitor a group-common PDCCH for a slot format indicator (SFI)(s) through higher layer (eg, RRC) signaling.
  • SFI DCI slot format indicator
  • DCI format 2_0 is used as SFI DCI.
  • the BS is the (start) position of the slot format combination ID (i.e., SFI-index) for the corresponding serving cell within the SFI DCI, and the slot applicable to the corresponding serving cell.
  • a set of format combinations, a reference subcarrier interval setting for each slot format in the slot format combination indicated by the SFI-index value in the SFI DCI may be provided to the UE.
  • One or more slot formats are set for each slot format combination in the set of slot format combinations and a slot format combination ID (ie, SFI-index) is assigned.
  • N slots among slot format indexes for slot formats predefined for the slot format combination (e.g., see Table 3) Format indexes can be indicated.
  • the BS informs the UE of the total length of the SFI-RNTI, which is the RNTI used for SFI, and the DCI payload scrambled with the SFI-RNTI to configure the UE to monitor the group-common PDCCH for SFIs.
  • the UE detects the PDCCH based on the SFI-RNTI, the UE may determine the slot format(s) for the corresponding serving cell from the SFI-index for the serving cell among SFI-indexes in the DCI payload in the PDCCH. .
  • TDD DL-UL pattern configuration may be indicated as uplink, downlink, or flexible by SFI DCI.
  • Symbols indicated as downlink/uplink by TDD DL-UL pattern configuration are not overridden as uplink/downlink or flexible by SFI DCI.
  • the UE determines whether each slot is uplink or downlink and the symbol allocation within each slot is SFI DCI and/or DCI scheduling or triggering transmission of downlink or uplink signals (e.g., DCI format 1_0, DCI format 1_1, DCI format 1_2, DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 2_3).
  • DCI format 1_0, DCI format 1_1, DCI format 1_2, DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 2_3 e.g., DCI format 1_0, DCI format 1_1, DCI format 1_2, DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 2_3
  • a UE with carrier aggregation configured may be configured to use one or more cells.
  • the UE When a UE is configured to have a plurality of serving cells, the UE may be configured to have one or a plurality of cell groups.
  • the UE may be configured to have multiple cell groups associated with different BSs. Alternatively, the UE may be configured to have a plurality of cell groups associated with a single BS.
  • Each cell group of the UE is composed of one or more serving cells, and each cell group includes a single PUCCH cell in which PUCCH resources are configured.
  • the PUCCH cell may be a Pcell or an Scell configured as a PUCCH cell among Scells of a corresponding cell group.
  • Each serving cell of the UE belongs to one of the cell groups of the UE and does not belong to a plurality of cell groups.
  • the NR frequency bands are defined by two types of frequency ranges, FR1 and FR2, and FR2 is also referred to as a millimeter wave (mmW).
  • mmW millimeter wave
  • the following table exemplifies frequency ranges in which NR can operate.
  • the PDCCH carries DCI.
  • the PDCCH i.e., DCI
  • the PDCCH is a transmission format and resource allocation of a downlink shared channel (DL-SCH), resource allocation information for an uplink shared channel (UL-SCH), Located above the physical layer among the protocol stacks of UE/BS, such as paging information for a paging channel (PCH), system information on the DL-SCH, and random access response (RAR) transmitted on the PDSCH.
  • PCH paging information for a paging channel
  • RAR random access response
  • It carries resource allocation information for a control message of a layer (hereinafter, an upper layer), a transmission power control command, and activation/deactivation of a configured scheduling (CS).
  • CS configured scheduling
  • the DCI including resource allocation information for the DL-SCH is also referred to as the PDSCH scheduling DCI, and the DCI including the resource allocation information for the UL-SCH is also referred to as the PUSCH scheduling DCI.
  • DCI includes a cyclic redundancy check (CRC), and the CRC is masked/scrambled with various identifiers (eg, radio network temporary identifier (RNTI)) according to the owner or usage purpose of the PDCCH.
  • CRC cyclic redundancy check
  • RNTI radio network temporary identifier
  • the CRC is masked with a UE identifier (eg, cell RNTI (C-RNTI))
  • C-RNTI cell RNTI
  • P-RNTI paging RNTI
  • the PDCCH relates to system information (eg, system information block (SIB)
  • SI-RNTI system information RNTI
  • the CRC is masked with system information RNTI (system information RNTI, SI-RNTI))
  • the PDCCH is for random access response, the CRC is Masked with random access RNTI (RA-RATI).
  • SIB system information block
  • RA-RATI random access RNTI
  • Cross-carrier scheduling When a PDCCH on one serving cell schedules a PDSCH or PUSCH of another serving cell, it is referred to as cross-carrier scheduling.
  • Cross-carrier scheduling using a carrier indicator field (CIF) may allow the PDCCH of a serving cell to schedule resources on another serving cell.
  • a PDSCH on a serving cell schedules a PDSCH or a PUSCH on the serving cell, it is referred to as self-carrier scheduling.
  • the BS may provide information on a cell scheduling the cell to the UE.
  • the BS tells the UE whether the serving cell is scheduled by PDCCH on another (scheduling) cell or is scheduled by the serving cell, and if the serving cell is scheduled by another (scheduling) cell, which cell is Whether to signal downlink assignments and uplink grants for the serving cell may be provided.
  • a cell carrying a PDCCH is referred to as a scheduling cell, and a cell in which transmission of a PUSCH or PDSCH is scheduled by a DCI included in the PDCCH, that is, a cell carrying a PUSCH or a PDSCH scheduled by the PDCCH. Is referred to as a scheduled cell.
  • the PDSCH is a physical layer UL channel for UL data transport.
  • the PDSCH carries downlink data (e.g., a DL-SCH transport block), and modulation methods such as Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64 QAM, and 256 QAM are applied.
  • a codeword is generated by encoding a transport block (TB).
  • the PDSCH can carry up to two codewords. Scrambling and modulation mapping are performed for each codeword, and modulation symbols generated from each codeword may be mapped to one or more layers. Each layer is mapped to a radio resource along with a DMRS, generated as an OFDM symbol signal, and transmitted through a corresponding antenna port.
  • PUCCH means a physical layer UL channel for UCI transmission.
  • PUCCH carries UCI (Uplink Control Information).
  • UCI includes:
  • SR -Scheduling request
  • HARQ-ACK-acknowledgement This is a response to a downlink data packet (eg, codeword) on the PDSCH. This indicates whether the downlink data packet has been successfully received by the communication device.
  • HARQ-ACK 1 bit may be transmitted in response to a single codeword
  • HARQ-ACK 2 bits may be transmitted in response to two codewords.
  • the HARQ-ACK response includes positive ACK (briefly, ACK), negative ACK (NACK), DTX or NACK/DTX.
  • the term HARQ-ACK is mixed with HARQ ACK/NACK, ACK/NACK, or A/N.
  • CSI Channel quality information
  • RI rank indicator
  • PMI precoding matrix indicator
  • CSI-RS resource indicator CRI
  • CRI CSI-RS resource indicator
  • SSBRI SS /PBCH resource block indicator
  • LI layer indicator
  • CSI may be classified into CSI part 1 and CSI part 2 according to the UCI type included in the CSI. For example, CRI, RI, and/or CQI for the first codeword may be included in CSI Part 1, and CQI for LI, PMI, and the second codeword may be included in CSI Part 2.
  • PUCCH resources set and/or indicated by the BS to the UE for HARQ-ACK, SR, and CSI transmission are referred to as HARQ-ACK PUCCH resources, SR PUCCH resources, and CSI PUCCH resources, respectively.
  • the PUCCH format may be classified as follows according to the UCI payload size and/or transmission length (eg, the number of symbols constituting the PUCCH resource). For information on the PUCCH format, refer to Table 7 together.
  • PUCCH format 0 consists of only UCI signals without DMRS, and the UE transmits the UCI state by selecting and transmitting one of a plurality of sequences. For example, the UE transmits one of a plurality of sequences through PUCCH of PUCCH format 0 and transmits a specific UCI to the BS. The UE transmits the PUCCH of PUCCH format 0 in the PUCCH resource for SR configuration corresponding only when transmitting a positive SR.
  • the setting for PUCCH format 0 includes the following parameters for the corresponding PUCCH resource: an index for initial cyclic transition, the number of symbols for PUCCH transmission, and the first symbol for the PUCCH transmission.
  • DMRS and UCI are set/mapped to different OFDM symbols in the form of TDM. That is, the DMRS is transmitted in a symbol in which a modulation symbol is not transmitted.
  • UCI is expressed by multiplying a specific sequence (eg, orthogonal cover code (OCC)) by a modulation (eg, QPSK) symbol.
  • OCC orthogonal cover code
  • CS cyclic shift
  • CS Code division multiplexing
  • PUCCH format 1 carries UCI of a maximum size of 2 bits, and the modulation symbol is in the time domain. Is spread by an orthogonal cover code (OCC) (which is set differently depending on whether or not frequency hopping).
  • the setting for PUCCH format 1 includes the following parameters for the corresponding PUCCH resource: index for initial cyclic transition, number of symbols for PUCCH transmission, first symbol for PUCCH transmission, orthogonal cover code Index for ).
  • DMRS and UCI are set/mapped in the form of frequency division multiplex (FDM) within the same symbol.
  • the UE transmits the coded UCI bit by applying only IFFT without DFT.
  • PUCCH format 2 carries UCI of a bit size larger than K bits, and a modulation symbol is transmitted after being FDM with DMRS.
  • the DMRS is located at symbol indexes #1, #4, #7, and #10 in a given resource block with a density of 1/3.
  • a pseudo noise (PN) sequence is used for the DMRS sequence. Frequency hopping may be activated for 2-symbol PUCCH format 2.
  • the setting for PUCCH format 2 includes the following parameters for the corresponding PUCCH resource: the number of PRBs, the number of symbols for PUCCH transmission, the first symbol for the PUCCH transmission.
  • DMRS and UCI are set/mapped to different symbols in the form of TDM.
  • the UE transmits by applying DFT to the coded UCI bits.
  • PUCCH format 3 does not support UE multiplexing for the same time-frequency resource (eg, the same PRB).
  • the setting for PUCCH format 3 includes the following parameters for the corresponding PUCCH resource: the number of PRBs, the number of symbols for PUCCH transmission, the first symbol for the PUCCH transmission.
  • DMRS and UCI are set/mapped to different symbols in the form of TDM.
  • PUCCH format 4 can multiplex up to 4 UEs in the same PRB by applying OCC at the front end of the DFT and applying CS (or interleaved FDM (IFDM) mapping) to the DMRS.
  • CS interleaved FDM
  • the modulation symbols of UCI are transmitted after DMRS and TDM (Time Division Multiplexing).
  • the configuration for PUCCH format 4 includes the following parameters for the corresponding PUCCH resource: the number of symbols for PUCCH transmission, length for orthogonal cover code, index for orthogonal cover code, first symbol for the PUCCH transmission.
  • the following table illustrates PUCCH formats. Depending on the PUCCH transmission length, it may be divided into short PUCCH (formats 0, 2) and long PUCCH (formats 1, 3, 4).
  • K is the number of PUCCH resource sets (K>1)
  • N i is the maximum number of UCI bits supported by the PUCCH resource set #i.
  • PUCCH resource set #1 may be composed of resources of PUCCH format 0 to 1
  • other PUCCH resource sets may be composed of resources of PUCCH format 2 to 4 (see Table 5).
  • the configuration for each PUCCH resource includes a PUCCH resource index, a starting PRB index, and one of PUCCH formats 0 to PUCCH 4, and the like.
  • the code rate for multiplexing HARQ-ACK, SR and CSI report(s) in PUCCH transmission using PUCCH format 2, PUCCH format 3, or PUCCH format 4 is set to the UE by the BS through the upper layer parameter maxCodeRate.
  • the upper layer parameter maxCodeRate is used to determine how to feed back UCI on PUCCH resources for PUCCH formats 2, 3 or 4.
  • the PUCCH resource to be used for UCI transmission in the PUCCH resource set may be configured to the UE by the network through higher layer signaling (eg, RRC signaling).
  • the UCI type is HARQ-ACK for the SPS (Semi-Persistent Scheduling) PDSCH
  • the PUCCH resource to be used for UCI transmission within the PUCCH resource set may be set to the UE by the network through higher layer signaling (e.g., RRC signaling).
  • a PUCCH resource to be used for UCI transmission in a PUCCH resource set may be scheduled based on DCI.
  • the BS transmits the DCI to the UE through the PDCCH, and the PUCCH to be used for UCI transmission within a specific PUCCH resource set through the ACK/NACK resource indicator (ARI) in the DCI.
  • Resources can be dictated.
  • ARI is used to indicate PUCCH resources for ACK/NACK transmission, and may also be referred to as a PUCCH resource indicator (PRI).
  • DCI is DCI used for PDSCH scheduling, and UCI may include HARQ-ACK for PDSCH.
  • the BS may set a PUCCH resource set consisting of PUCCH resources more than the number of states that can be represented by the ARI using a (UE-specific) higher layer (eg, RRC) signal.
  • the ARI indicates a PUCCH resource sub-set within the PUCCH resource set, and which PUCCH resource is to be used within the indicated PUCCH resource sub-set is transmission resource information for the PDCCH (e.g., PDCCH start control channel element (control channel element, CCE) index, etc.) based on an implicit rule.
  • the UE must have uplink resources available to the UE for UL-SCH data transmission, and must have downlink resources available to the UE for DL-SCH data reception.
  • Uplink resources and downlink resources are assigned to the UE through resource allocation by the BS.
  • Resource allocation may include time domain resource allocation (TDRA) and frequency domain resource allocation (FDRA).
  • uplink resource allocation is also referred to as an uplink grant
  • downlink resource allocation is also referred to as a downlink allocation.
  • the uplink grant is dynamically received on the PDCCH or in the RAR by the UE, or is semi-persistently configured to the UE by RRC signaling from the BS.
  • the downlink assignment is dynamically received on the PDCCH by the UE, or semi-continuously set to the UE by RRC signaling from the BS.
  • the BS may dynamically allocate uplink resources to the UE through PDCCH(s) addressed to a cell radio network temporary identifier (C-RNTI).
  • C-RNTI cell radio network temporary identifier
  • the UE monitors the PDCCH(s) to find possible uplink grant(s) for UL transmission.
  • the BS may allocate uplink resources using a grant set to the UE. Two types of set grants, type 1 and type 2, can be used. In the case of type 1, the BS directly provides a set uplink grant (including a period) through RRC signaling.
  • the BS sets the period of the uplink grant configured with RRC through RRC signaling, and the set through the PDCCH (PDCCH addressed to CS-RNTI) addressed with the configured scheduling RNTI (CS-RNTI)
  • the uplink grant may be signaled and activated or may be deactivated.
  • the PDCCH addressed to the CS-RNTI indicates that the corresponding uplink grant can be implicitly reused according to a period set by RRC signaling until deactivation.
  • the BS can dynamically allocate downlink resources to the UE through PDCCH(s) addressed with C-RNTI.
  • the UE monitors the PDCCH(s) to find possible downlink assignments.
  • the BS may allocate downlink resources to the UE using semi-static scheduling (SPS).
  • SPS semi-static scheduling
  • the BS may set a period of downlink assignments set through RRC signaling, and may signal and activate the set downlink assignment through a PDCCH addressed to CS-RNTI, or deactivate it.
  • the PDCCH addressed to CS-RNTI indicates that the corresponding downlink assignment can be implicitly reused according to a period set by RRC signaling until deactivation.
  • the PDCCH can be used to schedule DL transmission on the PDSCH or UL transmission on the PUSCH.
  • the DCI on the PDCCH for scheduling DL transmission includes a DL resource allocation that includes at least a modulation and coding format (e.g., a modulation and coding scheme (MCS) index I MCS), resource allocation, and HARQ information related to the DL-SCH.
  • MCS modulation and coding scheme
  • I can.
  • the DCI on the PDCCH for scheduling UL transmission may include an uplink scheduling grant that includes at least a modulation and coding format, resource allocation, and HARQ information related to UL-SCH.
  • the size and use of DCI carried by one PDCCH differs according to the DCI format.
  • DCI format 0_0, DCI format 0_1, or DCI format 0_2 may be used for PUSCH scheduling
  • DCI format 1_0, DCI format 1_1, or DCI format 1_2 may be used for PDSCH scheduling.
  • DCI format 0_2 and DCI format 1_2 have higher transmission reliability and lower latency than the transmission reliability and latency requirements guaranteed by DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1. It can be used to schedule transmissions with requirements.
  • Some implementations of this specification may be applied to UL data transmission based on DCL format 0_2.
  • Some implementations of this specification may be applied to DL data reception based on DCI format 1_2.
  • FIG. 7 shows an example of PDSCH time domain resource allocation by PDCCH and an example of PUSCH time domain resource allocation by PDCCH.
  • the DCI carried by the PDCCH to schedule the PDSCH or PUSCH includes a time domain resource assignment (TDRA) field, and the TDRA field is a row to an allocation table for PDSCH or PUSCH.
  • TDRA time domain resource assignment
  • the predefined default PDSCH time domain allocation is applied as the allocation table for the PDSCH, or the PDSCH time domain resource allocation table set by the BS through the RRC signaling pdsch-TimeDomainAllocationList is applied as the allocation table for the PDSCH.
  • a predefined default PUSCH time domain allocation is applied as the allocation table for the PUSCH, or the PUSCH time domain resource allocation table set by the BS through the RRC signaling pusch-TimeDomainAllocationList is applied as the allocation table for the PUSCH.
  • the PDSCH time domain resource allocation table to be applied and/or the PUSCH time domain resource allocation table to be applied may be determined according to a fixed/predefined rule (eg, see 3GPP TS 38.214).
  • each indexed row is assigned a DL-to-PDSCH slot offset K 0 , a start and length indicator value SLIV (or directly a start position of the PDSCH in the slot (eg, start symbol index S ) and an allocation length. (Eg, the number of symbols L )), defines the PDSCH mapping type.
  • each indexed row is a UL grant-to-PUSCH slot offset K 2 , a start position of a PUSCH in the slot (eg, start symbol index S ) and an allocation length (eg, number of symbols L ), and PUSCH mapping Define the type.
  • K 0 for PDSCH or K 2 for PUSCH indicates a difference between a slot with a PDCCH and a slot with a PDSCH or PUSCH corresponding to the PDCCH.
  • SLIV is a joint indication of a start symbol S relative to the start of a slot having a PDSCH or PUSCH and the number L of consecutive symbols counted from the symbol S.
  • mapping type A there are two mapping types: one is mapping type A and the other is mapping type B.
  • a demodulation reference signal is mapped to a PDSCH/PUSCH resource based on the start of a slot, and one or one of the symbols of the PDSCH/PUSCH resource according to other DMRS parameters Two symbols may be used as the DMRS symbol(s).
  • the DMRS is the third symbol (symbol #2) or the fourth symbol (symbol #2) in the slot according to RRC signaling.
  • the DMRS is mapped based on the first OFDM symbol of the PDSCH/PUSCH resource, and one or more from the first symbol of the PDSCH/PUSCH resource according to other DMRS parameters Two symbols may be used as the DMRS symbol(s)
  • the DMRS is located in the first symbol allocated for PDSCH/PUSCH.
  • PDSCH/PUSCH mapping The type may be referred to as a mapping type or a DMRS mapping type, for example, in this specification, a PUSCH mapping type A is also referred to as a mapping type A or a DMRS mapping type A, and a PUSCH mapping type B is a mapping type B or a DMRS mapping type. Also referred to as type B.
  • the scheduling DCI includes a frequency domain resource assignment (FDRA) field that provides assignment information on resource blocks used for PDSCH or PUSCH.
  • FDRA frequency domain resource assignment
  • the FDRA field provides the UE with information on a cell for PDSCH or PUSCH transmission, information on a BWP for PDSCH or PUSCH transmission, and information on resource blocks for PDSCH or PUSCH transmission.
  • a configured grant type 1 there are two types of transmission without a dynamic grant: a configured grant type 1 and a configured grant type 2.
  • a UL grant is provided by RRC signaling and is a configured grant. Is saved.
  • the UL grant is provided by the PDCCH, and is stored or cleared as an uplink grant configured based on L1 signaling indicating activation or deactivation of the configured uplink grant.
  • Type 1 and Type 2 may be configured by RRC signaling for each serving cell and for each BWP. Multiple settings can be active simultaneously on different serving cells.
  • the UE may receive the following parameters from the BS through RRC signaling:
  • timeDomainAllocation value m which provides a row index m +1 pointing to the allocation table, indicating a combination of the start symbol S , length L , and PUSCH mapping type;
  • the UE When setting the configuration grant type 1 for the serving cell by RRC, the UE stores the UL grant provided by the RRC as a configured uplink grant for the indicated serving cell, and in timeDomainOffset and S (derived from SLIV) Initialize or re-initialize so that the configured uplink grant starts in the corresponding symbol and recurs with periodicity.
  • timeDomainOffset and S derived from SLIV
  • the UE may receive the following parameters from the BS through RRC signaling:
  • the actual uplink grant is provided to the UE by the PDCCH (addressed with CS-RNTI).
  • the UE may be configured with semi-persistent scheduling (SPS) for each serving cell and for each BWP by RRC signaling from the BS.
  • SPS semi-persistent scheduling
  • DL allocation is provided to the UE by PDCCH, and is stored or removed based on L1 signaling indicating SPS activation or deactivation.
  • the UE can receive the following parameters from the BS through RRC signaling:
  • the cyclic redundancy check (CRC) of the DCI format is scrambled with the CS-RNTI provided by the RRC parameter cs-RNTI , and the new data indicator field for the enabled transport block is set to 0. If there is, the UE confirms that the DL SPS allocated PDCCH or the configured UL grant type 2 PDCCH is valid for scheduling activation or scheduling cancellation. If all fields for the DCI format are set according to Table 6 or Table 7, validity confirmation of the DCI format is achieved. Table 6 exemplifies special fields for validating DL SPS and UL grant type 2 scheduling activation PDCCH, and Table 7 exemplifies special fields for validating DL SPS and UL grant type 2 scheduling release PDCCH.
  • the actual DL allocation or UL grant for DL SPS or UL grant type 2, and the corresponding modulation and coding scheme are resource allocation fields in the DCI format carried by the corresponding DL SPS or UL grant type 2 scheduling activation PDCCH ( Yes, it is provided by a TDRA field providing a TDRA value m, an FDRA field providing a frequency resource block allocation, and a modulation and coding scheme field).
  • the UE regards the information in the DCI format as valid activation or valid release of DL SPS or configured UL grant type 2.
  • the UE may detect a PDCCH in slot n. Thereafter, the UE may receive the PDSCH in slot n+K0 according to the scheduling information received through the PDCCH in slot n, and then transmit UCI through the PUCCH in slot n+K1.
  • the UCI includes a HARQ-ACK response for the PDSCH.
  • the DCI (eg, DCI format 1_0, DCI format 1_1) carried by the PDCCH scheduling the PDSCH may include the following information.
  • FDRA -Frequency domain resource assignment
  • TDRA Time domain resource assignment
  • PDSCH mapping type A or PDSCH mapping type B may be indicated by the TDRA.
  • the DMRS is located in the third symbol (symbol #2) or the fourth symbol (symbol #3) in the slot.
  • the DMRS is located in the first symbol allocated for the PDSCH.
  • -PDSCH-to-HARQ_feedback timing indicator indicates K1.
  • the HARQ-ACK response may consist of 1-bit.
  • the HARQ-ACK response will consist of 2-bits when spatial bundling is not set, and 1-bits when spatial bundling is set. I can.
  • the HARQ-ACK transmission time point for a plurality of PDSCHs is designated as slot n+K1
  • the UCI transmitted in slot n+K1 includes HARQ-ACK responses for the plurality of PDSCHs.
  • a HARQ-ACK payload composed of HARQ-ACK bit(s) for one or a plurality of PDSCHs may be referred to as a HARQ-ACK codebook.
  • the HARQ-ACK codebook may be classified into a semi-static HARQ-ACK codebook and a dynamic HARQ-ACK codebook according to a method in which the HARQ-ACK payload is determined.
  • parameters related to the size of the HARQ-ACK payload to be reported by the UE are semi-statically set by a (UE-specific) higher layer (eg, RRC) signal.
  • a (UE-specific) higher layer eg, RRC
  • the HARQ-ACK payload size of the semi-static HARQ-ACK codebook is, the (maximum) HARQ-ACK payload (size) transmitted through one PUCCH in one slot is all DL carriers set to the UE.
  • the semi-static HARQ-ACK codebook scheme is a scheme in which the size of the HARQ-ACK codebook is fixed (to a maximum value) regardless of the actual number of scheduled DL data.
  • the DL grant DCI includes PDSCH to HARQ-ACK timing information, and the PDSCH-to-HARQ-ACK timing information may have one of a plurality of values (eg, k).
  • the HARQ-ACK information for the PDSCH is slot # It can be transmitted at (m+k). For example, it may be given as k ⁇ ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • the HARQ-ACK information may include a maximum possible HARQ-ACK based on the bundling window. That is, HARQ-ACK information of slot #n may include HARQ-ACK corresponding to slot #(n-k).
  • HARQ-ACK information of slot #n is slot #(n-8) ⁇ regardless of actual DL data reception. Includes HARQ-ACK corresponding to slot # (n-1) (ie, the maximum number of HARQ-ACKs).
  • the HARQ-ACK information may be replaced with the HARQ-ACK codebook and the HARQ-ACK payload.
  • the slot may be understood/replaced as a candidate opportunity for DL data reception.
  • the bundling window is determined based on the PDSCH-to-HARQ-ACK timing based on the HARQ-ACK slot, and the PDSCH-to-HARQ-ACK timing set has a pre-defined value (eg, ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ ), and may be set by higher layer (RRC) signaling.
  • RRC higher layer
  • the size of the HARQ-ACK payload to be reported by the UE may be dynamically changed by DCI or the like.
  • the DL scheduling DCI may include counter-DAI (ie, c-DAI) and/or total-DAI (ie, t-DAI).
  • DAI means a downlink assignment index, and is used for the BS to inform the UE of the transmitted or scheduled PDSCH(s) to be included in one HARQ-ACK transmission.
  • c-DAI is an index indicating the order between PDCCHs carrying DL scheduling DCI (hereinafter, DL scheduling PDCCH), and t-DAI is the total number of DL scheduling PDCCHs up to the current slot in which the PDCCH with t-DAI is located. It is an index to indicate.
  • the physical layer of the NR is designed to support a flexible transmission structure in consideration of requirements for various services.
  • the physical layer of the NR may change the OFDM symbol length (OFDM symbol duration) and subcarrier spacing (SCS) (hereinafter, OFDM neurology) as necessary.
  • transmission resources of physical channels may be changed within a certain range (in units of symbols).
  • the transmission length/transmission start time of the PUCCH (resource) and the PUSCH (resource) may be flexibly set within a certain range.
  • a control resource set which is a set of time-frequency resources through which the UE can monitor the PDCCH, may be defined and/or set. More than one CORESET may be set to the UE.
  • CORESET consists of a set of physical resource blocks (PRBs) with a time period of 1 to 3 OFDM symbols. PRBs constituting the CORESET and the CORESET duration may be provided to the UE through higher layer (eg, RRC) signaling.
  • PRBs physical resource blocks
  • RRC radio resource block
  • the master information block (MIB) on the PBCH provides parameters for monitoring the PDCCH (e.g., setting CORESET#0) to the UE for scheduling the PDSCH carrying the system information block (SIB1). do.
  • the PBCH may also indicate that there is no associated SIB1, and in this case, the UE may be indicated not only a frequency range in which it can be assumed that there is no SSB associated with SSB1, but also another frequency to search for an SSB associated with SIB1.
  • CORESET#0 which is a CORESET for scheduling at least SIB1, may be set through MIB or dedicated RRC signaling.
  • the set of PDCCH candidates monitored by the UE is defined in terms of PDCCH search space sets.
  • the search space set may be a common search space (CSS) set or a UE-specific search space (USS) set.
  • Each CORESET setting is associated with one or more sets of search spaces, and each set of search spaces is associated with one CORESET setting.
  • the search space set s is determined based on the following parameters provided to the UE by the BS.
  • controlResourceSetId an identifier for identifying the CORESET p associated with the search space set s.
  • duration of T s ⁇ k s slots indicating the number of slots in which the search space set s exists.
  • -searchSpaceType indicates whether the search space set s is a CCE set or a USS.
  • the parameter monitoringSymbolsWithinSlot represents, for example, the first symbol(s) for PDCCH monitoring in slots set for PDCCH monitoring (eg, see parameters monitoringSlotPeriodicityAndOffset and duration). For example, if monitoringSymbolsWithinSlot is 14-bit, the most significant (left) bit represents the first OFDM symbol in the slot, and the second most significant (left) bit represents the second OFDM symbol in the slot. In this way, monitoringSymbolsWithinSlot can represent the 14 OFDM symbols of the slot with bits each (respectively). For example, the bit(s) set to 1 of the bits in monitoringSymbolsWithinSlot identifies the first symbol(s) of the CORESET in the slot.
  • the UE monitors PDCCH candidates only at PDCCH monitoring occasions.
  • the UE determines the PDCCH monitoring timing on the active DL BWP within the slot from the PDCCH monitoring periodicity, the PDCCH monitoring offset, and the PDCCH monitoring pattern.
  • the UE monitors the PDCCH candidates for the search space set s for T s consecutive slots starting from slot n u s,f , and for the search space set s for the next k s -T s consecutive slots. PDCCH candidates are not monitored.
  • the following table exemplifies search space sets, related RNTIs, and usage examples.
  • the following table exemplifies DCI formats that the PDCCH can carry.
  • DCI format 0_0 is used to schedule a transport block (TB)-based (or TB-level) PUSCH
  • DCI format 0_1 is a TB-based (or TB-level) PUSCH or code block group (CBG) ) Can be used to schedule a base (or CBG-level) PUSCH.
  • DCI format 1_0 is used to schedule TB-based (or TB-level) PDSCH
  • DCI format 1_1 is used to schedule TB-based (or TB-level) PDSCH or CBG-based (or CBG-level) PDSCH I can.
  • DCI format 0_0 and DCI format 1_0 have a fixed size after the BWP size is initially given by RRC.
  • DCI format 0_0 and DCI format 1_0 have a fixed size except for the size of the frequency domain resource assignment (FDRA) field, but the size of the FDRA field is It can be changed through settings.
  • the size of the DCI field may be changed through various RRC reconfiguration by the BS.
  • DCI format 2_0 can be used to deliver dynamic slot format information (eg, SFI DCI) to the UE
  • DCI format 2_1 can be used to deliver downlink pre-emption information to the UE
  • DCI format 2_4 May be used to inform the UL resource for which UL transmission from the UE should be canceled.
  • each of DCI format 0_0 and DCI format 0_1 includes a frequency domain resource allocation field for scheduling of PUSCH
  • each of DCI format 1_0 and DCI format 1_1 includes a frequency domain resource allocation field for scheduling of PDSCH.
  • I can.
  • the number of bits in the frequency domain resource field of each of DCI format 0_0 and DCI format 0_1 may be determined based on N RB UL,BWP, which is the size of an active or initial UL BWP.
  • the number of bits in the frequency domain resource field of each of DCI format 1_0 and DCI format 1_1 may be determined based on the size of the active or initial DL BWP, N RB DL,BWP.
  • a control channel element (CCE) aggregation level(s) that the UE must monitor in each subframe for PDCCH reception and the number of PDCCH candidates for each aggregation level are fixed.
  • the maximum number of PDCCH candidates that the UE should monitor in each subframe is fixed. For example, in the 3GPP system, the number of PDCCH candidates that the UE monitors in each subframe is limited to a maximum of 44, and the UE does not expect the number of PDCCH candidates that it monitors in each subframe to exceed 44. Does not.
  • the number of times the UE attempts to decode the PDCCH candidate in one subframe is a maximum of 44 times.
  • the BS can transmit up to 44 PDCCHs to the UE in the search space(s) within each subframe, and it is not allowed to transmit more than 44 PDCCHs to the UE in one subframe.
  • the BS can set one or more CORESETs to the UE through RRC signaling, and can set one or more search space sets, and PDCCH for each PDCCH aggregation level (AL) for each search space set.
  • the number of candidates can also be set.
  • the maximum number of PDCCH candidates that the BS can set to the UE for a predetermined time interval is not fixed.
  • the number of PDCCH candidates also increases according to the number of serving cells set in the UE.
  • the UE needs to monitor a large number of PDCCH candidates for a certain time interval, that is, if the number of blind decoding that the UE has to perform for a certain time interval is too large, the complexity of PDCCH decoding in the UE increases and HARQ The problem of increasing the complexity of process management can arise.
  • the UE in order to decode the PDCCH, the UE performs channel estimation in CCE units based on a reference signal transmitted along with the PDCCH.
  • the UE capability for PDCCH monitoring for each predetermined time interval depends not only on the maximum number of PDCCH candidates that the UE can monitor for each predetermined time interval, but also on the number of CCEs for which the UE can perform channel estimation for each predetermined time interval. .
  • the number of CCEs to which the UE should perform channel estimation for a predetermined time interval may mean the number of non-overlapping CCEs. For overlapping CCEs, this is because the UE can reuse the channel estimation result for one CCE for another CCE. If CCEs for PDCCH candidates correspond to different CORESET indexes or other first symbols for reception of each PDCCH candidate, they are non-overlapping CCEs.
  • the UE may not properly detect some or all of the PDCCHs.
  • the UE will perform PDCCH monitoring at each predetermined time interval up to its maximum capacity limit, so UE power will be wasted. I can.
  • the maximum number of PDCCH candidates monitored by the UE and/or the number of non-overlapping CCEs is set or defined.
  • Table 10 exemplifies the maximum number of PDCCH candidates M max,slot,u PDCCH monitored per slot for a DL BWP with an SCS configuration u ⁇ 0,1,2,3 ⁇ for a single serving cell
  • Table 11 shows The maximum number of non-overlapping CCEs per slot C max,slot,u PDCCH for a DL BWP with SCS configuration u ⁇ 0,1,2,3 ⁇ for a single serving cell is illustrated.
  • the UE is configured with N DL,u cells DL cells with DL BWPs with SCS configuration u, where , If the DL BWP of the activated cell is the active DL BWP of the activated cell, and the DL BWP of the deactivated cell is a DL BWP set as the first active DL BWP through RRC signaling from the BS for the deactivated cell, The UE selects PDCCH candidates for each slot on the active DL BWP(s) of the scheduling cell(s) from the DL cells. More than dogs or non-overlapping CCEs It is not required to monitor more than dogs.
  • N cap cells may be a value of the blind detection capability when the UE provides the blind detection capability to the BS, otherwise it may be the number of DL cells configured for the UE.
  • the UE sets PDCCH candidates for each slot by more than min (M max,slot,u PDCCH , M total,slot,u PDCCH ) or non-overlapping CCEs. More than min(C max,slot,u PDCCH , C total,slot,u PDCCH ) is not required to monitor on the active DL BWP with the SCS setting u of the scheduling cell.
  • S css denotes a set of CSS sets having a cardinality of I css
  • S uss is a set of USS sets having a cardinality of J uss. Mark the set.
  • the UE requests (require) the total number of C CSS PDCCH non-overlapping CCEs in the slot. Monitor the dog PDCCH candidates.
  • the BS and the UE may allocate PDCCH candidates to be monitored by the UE to USS sets for a primary cell having an active DL BWP with an SCS configuration u in slot n according to a pseudocode in the following table. have.
  • the UE does not expect to monitor the PDCCH in the USS set where there are no assigned PDCCH candidates to monitor.
  • Type 1 CSS with dedicated RRC setting and for Type 3 CSS, USS, CORESET resource allocation of 6 RB bitmap and duration of 1-2 OFDM symbols for FR2
  • TCI Transmission configuration indicator
  • the monitoring timing is within the first 3 OFDM symbols of the slot.
  • the monitoring timing is Type 1 CSS without dedicated RRC setting within a single span of 3 consecutive OFDM symbols in a slot, or Type 0, 0A or It can be within any symbol(s) of the slot, with monitoring times for any of the 2 CSS settings.
  • URLLC In the case of URLLC, which is one of the representative scenarios of the next system, it has a user plane delay of 0.5ms and a low-latency, high-reliability requirement to transmit X bytes of data within 1ms within a 10 ⁇ -5 error rate.
  • eMBB has a large traffic capacity, but URLLC traffic has different characteristics that are sporadic and have a file size within tens to hundreds of bytes. Therefore, eMBB requires transmission that maximizes the transmission rate and minimizes the overhead of control information, and URLLC requires a short scheduling time unit and a reliable transmission method.
  • a set of contiguous symbols in a slot may be formed so that the UE monitors PDCCH candidates.
  • a set of consecutive symbols in a slot in which the UE is configured to monitor PDCCH candidates is referred to as a span or a monitoring span. The spans do not overlap, each span is contained within a single slot. The same span pattern can be repeated in every slot.
  • the UE may report one or more combinations of (X, Y) symbols for PDCCH monitoring.
  • X denotes the minimum time separation between the start of two consecutive spans
  • Y denotes the maximum number of consecutive OFDM symbols that each span can occupy in a slot.
  • the UE can support PDCCH monitoring times in any symbol of the slot with a minimum time separation of X symbols between the start of two consecutive spans, including the case across slots. For example, in a situation in which the UE reports a combination of (X, Y) symbols for PDCCH monitoring, if the span starts at symbol #i in the slot, the next span may start at symbol #i+X at the earliest.
  • the last span in the slot may have a shorter period than other spans in the slot.
  • the length of the span may be different for each cell, and the lengths of the spans in the slot on one cell may be the same.
  • the UE may report the combination(s) of (X, Y) symbols for PDCCH monitoring.
  • the UE reports ⁇ (2, 2), (4, 3), (7,3) ⁇ as a combination (X, Y)
  • BS is a combination (2, 2), combination (4 , 3), or combinations (7, 3)
  • PDCCH related parameters eg, CORESET setting, search space setting, etc.
  • the BS may set search space sets and a corresponding monitoring occasion (MO) so that the spans satisfy a combination (4, 3).
  • the BS may set the monitoring timing for one set of search spaces such that one or more exist within one slot.
  • the set of consecutive symbols according to the monitoring timings is one span (e.g. , Span #0) of FIG. 9 may be formed.
  • the monitoring timing may form one span (eg, span #1 or span #2 in FIG. 9).
  • the maximum number of monitored PDCCH candidates per slot and/or non-overlapping CCEs per slot illustrated in Table 10 or Table 11 The limit on the maximum number of s may be insufficient to prevent it from exceeding the UE capability. Accordingly, the ability to perform a larger number of blind decoding and/or channel estimation on the PDCCH to support the service/requirement may be defined as the capability of the UE.
  • the UE capability for per-slot or span-span PDCCH monitoring on the (active DL BWP) of the serving cell is monitored by the UE per slot or per span on the (active DL BWP) of the serving cell. It can be defined by the maximum number of possible PDCCH candidates and non-overlapping CCEs.
  • a rule may be defined so that the UE reports the maximum number of PDCCH candidates it can monitor within one monitoring period (or monitoring span).
  • monitoring timing/span When the set of monitoring timing and/or monitoring span (hereinafter, monitoring timing/span) in a slot is fixed, this capability can be defined and reported separately for each monitoring timing/span number or monitoring timing/span number group in the slot. have.
  • information on the maximum number of PDCCH candidates that the UE can monitor for a predetermined time period and/or the maximum number of corresponding time periods in the slot and/or the minimum gap between time periods is It can be reported as the capability of the UE.
  • the maximum number of monitoring timing/spans in the slot, and/or the time period of one monitoring timing/span, and/or the minimum gap between monitoring timing/spans, and/or one UE per numerology may be reported.
  • the maximum number of PDCCH candidates that can be monitored within the monitoring timing/span and/or the maximum number of non-overlapping CCEs per slot may be reported.
  • the BS may use the information to set a monitoring timing so as not to exceed the capabilities of the corresponding UE.
  • Table 13 shows the maximum number of monitored PDCCH candidates M max, (X, Y) in the span for the combination (X, Y) for the DL BWP with the SCS setting u ⁇ 0,1 ⁇ for a single serving cell, u PDCCH is illustrated, and Table 14 shows the maximum number of non-overlapping CCEs in the span for the combination (X, Y) for the DL BWP with the SCS setting u ⁇ 0,1 ⁇ for a single serving cell C max, (X, Y),u exemplifies PDCCH.
  • the BS may provide PDCCH configuration to the UE based on the capability reported by the UE.
  • the UE is a monitoring timing/candidate/aggregation level of low priority according to a predefined priority (aggregation level, AL) (set )
  • aggregation level, AL predefined priority
  • To skip monitoring (ie, omit or drop) (or the UE does not expect a configuration that exceeds its own capability) rules may be defined.
  • the UE when monitoring timings exceeding the capabilities of the UE are set to the UE, the UE is the maximum number of PDCCH candidates determined or defined (hereinafter, determined/defined) based on the capability and/or non-per slot To the highest priority(s) monitoring span/search space/time/candidate/aggregation level (AL) (set) according to a predefined priority within the range not exceeding the maximum number of overlapped CCEs. PDCCH candidates for monitoring may be allocated.
  • the capability of the UE for the maximum number of PDCCH candidates that can be monitored within one monitoring period/span and/or the maximum number of non-overlapping CCEs is (1) PDCCH and PDSCH, and these It may depend on processing time for channels such as PUCCH (or PUSCH) for HARQ-ACK transmission, or (2) processing time for channels such as PDCCH and PUSCH.
  • the PDCCH processing time of the UE As an example, as the processing time from processing for the PDSCH to completion of processing for channels such as PUCCH (or PUSCH) for HARQ-ACK transmission for the PDSCH becomes shorter, the PDCCH processing time of the UE Also, since it will be shortened, the maximum number of PDCCH candidates that can be monitored within one monitoring time/span and/or the maximum number of non-overlapping CCEs per slot can also be reduced.
  • the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs will be defined/reported as the capability of the UE. I can. This may depend on (1) processing time for channels such as the PDCCH and PDSCH and PUCCH (or PUSCH) for HARQ-ACK transmission therefor, or (2) processing time for channels such as PDCCH and PUSCH. have.
  • the PDCCH processing time of the UE since it will be shortened, the maximum number of PDCCH candidates that can be monitored within one monitoring time/span and/or the maximum number of non-overlapping CCEs per slot can also be reduced.
  • Table 15 illustrates the PDSCH processing time for the PDSCH processing capability #1 of the UE
  • Table 16 illustrates the PDSCH processing time for the PDSCH processing capability #2 of the UE
  • Table 17 is the PUSCH timing capability of the UE #1
  • Table 18 exemplifies the PUSCH preparation time for the timing capability #2 of the UE.
  • the UE can monitor for each combination of the "span period" and the "minimum gap between spans" of the monitoring span. Capabilities for the maximum number of PDCCH candidates and/or the maximum number of non-overlapping CCEs may be reported separately (differently).
  • PDCCH candidates that the UE can monitor for each combination of "span period” and "minimum gap between spans" of the monitoring span The ability for the maximum number of and/or the maximum number of non-overlapping CCEs may be reported separately (differently).
  • a plurality of PDSCH processing capabilities / PUSCH timing capabilities are defined/configured/instructed for one carrier or cell, for example, separate (different) for a plurality of PDSCHs/PUSCHs in one carrier/cell
  • the maximum number of PDCCH candidates that the UE can monitor for each combination of the "span period" and the "minimum gap between spans" of the monitoring span and/or of non-overlapping CCEs There may be a need for rules on which of the plurality of capability values defined for the maximum number should be applied.
  • Option 1 When a plurality of PDSCH processing capabilities or PUSCH timing capabilities are defined/set/instructed for one carrier or cell, for example, separate (different ) When the PDSCH processing capability or PUSCH timing capability is applied, the UE can monitor for each combination of the "span period" of the monitoring span defined for the PDSCH processing capability 2 / PUSCH timing capability 2 and the "minimum gap between spans"
  • the maximum number of PDCCH candidates and/or the maximum number of non-overlapping CCEs is regarded as the capability that the UE can support, whereby the UE can support a combination of a specific “span period” and “minimum gap between spans”
  • a rule may be defined such that the maximum number of PDCCH candidates that can be monitored and/or the maximum number of non-overlapping CCEs is determined.
  • the UE and the BS are defined for PDSCH processing capability 2 / PUSCH timing capability 2.
  • the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs for each combination of the "span period" and the "minimum gap between spans" of the monitoring span e.g., multiple UE capability values (e.g.
  • a smaller value among the maximum number of PDCCH candidates that the UE can monitor, the maximum number of non-overlapping CCEs, etc.) is used to derive the monitoring capability of the UE, and the UE sets the appropriate PDCCH (e.g., CORESET , PDCCH related parameters such as a search space) and monitoring.
  • PDCCH e.g., CORESET , PDCCH related parameters such as a search space
  • Option 2 When a plurality of PDSCH processing capabilities or PUSCH timing capabilities are defined/configured/instructed for one carrier or cell, for example, separate (different ) When PDSCH processing capability or PUSCH timing capability is applied, the maximum number of PDCCH candidates that the UE can monitor and/or non-overlapping CCE for each combination of "span period" and "minimum gap between spans" of the monitoring span The smallest value among a plurality of values defined/reported as the maximum number of them is regarded as the capability that the UE can support, thereby monitoring that the UE can support for a combination of a specific “span period” and “minimum gap between spans” A rule may be defined such that the maximum number of possible PDCCH candidates and/or the maximum number of non-overlapping CCEs is determined.
  • the maximum number of PDCCH candidates and/or the maximum number of non-overlapping CCEs that the UE can monitor for each combination of the “span period” and the “minimum gap between spans” of the monitoring span of a smaller value is always The maximum number of monitorable PDCCH candidates and/or the maximum of non-overlapping CCEs that the UE can support for a combination of a certain “span period” and “minimum gap between spans”, which is regarded as the ability to support and thereby
  • the BS and the UE allocate a short time for PDCCH monitoring, derive the monitoring capability of the UE based on this, and allow the UE to configure the PDCCH suitable for the monitoring capability It is to receive (eg, PDCCH related parameters such as CORESET, search space, etc.) and to be able to perform monitoring.
  • Option 3 When a plurality of PDSCH processing capabilities or PUSCH timing capabilities are defined/set/instructed for one carrier or cell, for example, separate (different ) When the PDSCH processing capability or PUSCH timing capability is applied, the "span period" and “minimum gap between spans" of the monitoring span related to the PDSCH processing capability or PUSCH timing capability defined/set/instructed for a specific PDSCH/PUSCH
  • the UE can support for a combination of a specific “span period” and “minimum gap between spans” by the maximum number of PDCCH candidates that the UE can monitor for each combination of and/or the maximum number of non-overlapping CCEs
  • a rule may be defined such that the maximum number of PDCCH candidates that can be monitored and/or the maximum number of non-overlapping CCEs is determined.
  • the monitoring capability of the UE is determined by the PDSCH processing capability or PUSCH timing capability to be applied, so the PDCCH monitoring capability is determined more flexibly and the PDCCH settings (e.g., PDCCH related parameters such as CORESET, search space, etc.) are set accordingly. This is to enable the user to receive and perform monitoring.
  • the PDCCH settings e.g., PDCCH related parameters such as CORESET, search space, etc.
  • the maximum number of monitorable PDCCH candidates and/or non-overlapping CCEs that the UE can support for a combination of a specific “span period” and “minimum gap between spans” The maximum number (for capability) is determined, and the UE skips monitoring for a low-priority monitoring timing/candidate/AL (set) according to a predefined priority (or the UE is a PDCCH exceeding the capability) Rules can be defined) so as not to expect monitoring settings.
  • the PDSCH processing capability to be applied for a specific PDSCH or the PUSCH timing capability to be applied for a specific PUSCH is set by the BS to the UE through a higher layer signal, or is explicit through a specific field of the DCI. Is indicated by, or is identified through a search space to which the PDCCH (scheduling DL/UL data) belongs, or by a CORESET to which the PDCCH (scheduling DL/UL data) belongs, or by RNTI, or by DCI format.
  • DCI size determined by the scheduling characteristics of PDSCH/PUSCH (e.g., PDSCH/PUSCH period, PDSCH/PUSCH priority), or cyclic redundancy check (CRC) of PDCCH It can be distinguished through masking.
  • DCI size determined by the scheduling characteristics of PDSCH/PUSCH (e.g., PDSCH/PUSCH period, PDSCH/PUSCH priority), or cyclic redundancy check (CRC) of PDCCH It can be distinguished through masking.
  • the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs will be defined/reported as the capability of the UE. I can.
  • the PDCCH monitoring setting e.g., parameters for acquiring PDCCH by the UE(s), such as CORESET setting, search space setting, etc.
  • the UE has Can be operated based on.
  • a predefined priority e.g., priority including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • PDCCH candidates for monitoring may be mapped or allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring with respect to the search space set X in a specific monitoring span, the UE is the PDCCH for the search space set X only for the corresponding monitoring span.
  • Candidate mapping/allocation is stopped, and PDCCH monitoring can be performed only up to a set of search spaces prior to that. The UE may continue to perform PDCCH candidate mapping/allocation in the remaining monitoring span until the capability is not exceeded.
  • the UE may perform PDCCH monitoring accordingly.
  • the UE may perform PDCCH monitoring up to CSS, USS 0 and USS 1 in the first monitoring span, and PDCCH monitoring up to USS 0, USS 1, USS 2, and USS 3 in the second monitoring span.
  • a predefined priority e.g., priority including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • PDCCH candidates for monitoring may be mapped/allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring for search space set X in a specific monitoring span, the UE is PDCCH for search space set X for all monitoring spans.
  • Candidate mapping/allocation is stopped, and PDCCH monitoring can be performed only up to a set of search spaces prior to that. The UE may perform PDCCH monitoring accordingly.
  • Option 3 For each monitoring span, a predefined priority (e.g., including ascending order of search space set ID: CSS set(s), USS set 0, USS set) until not exceeding the above capability. 1, USS set 2, ...), PDCCH candidates for monitoring may be mapped/allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring with respect to the search space set X in a specific monitoring span, the UE is the PDCCH for the search space set X for the corresponding monitoring span.
  • PDCCH candidates Mapping/allocation can be performed and PDCCH monitoring can be performed. In the remaining monitoring span, PDCCH candidate mapping/allocation is continuously performed until the capability is not exceeded. The UE may perform PDCCH monitoring accordingly.
  • a predefined priority e.g., priority including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • PDCCH candidates for monitoring may be mapped/allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring for search space set X in a specific monitoring span, the UE is PDCCH for search space set X for all monitoring spans.
  • There is a set of search spaces that stop candidate mapping/assignment but do not exceed the capability for all monitoring spans of the next priority set of search spaces e.g. search space sets X+1, X+2, .
  • PDCCH candidate mapping/allocation is performed and PDCCH monitoring is performed in a search space in which the capability is not exceeded for all monitoring spans among search spaces of the next priority.
  • the UE performs PDCCH monitoring accordingly.
  • the maximum number of non-overlapping CCEs that the UE can monitor for each combination of the "span period" and the "minimum gap between spans" of the monitoring span is defined/reported as the capability of the UE, whereas the UE can monitor
  • the maximum number of PDCCH candidates in existence may be defined/reported as the capability of the UE as the number per slot. In this case, when the PDCCH monitoring configuration exceeds any one (or both) of the above two capabilities, the UE may operate based on the following option(s).
  • Option 5 For each monitoring span, a predefined priority (e.g., including ascending order of search space set ID: CSS set(s), USS set 0, USS set) until not exceeding the above capabilities. 1, USS set 2, ...), PDCCH candidates for monitoring may be mapped/allocated.
  • a predefined priority e.g., including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • mapping/allocating PDCCH candidates for monitoring while exceeding the UE capability for the maximum number of PDCCH candidates that can be monitored per slot, non-overlapping that can be monitored in a specific monitoring span
  • mapping/allocation exceeding the UE capability for each combination of the “span period” and “minimum gap between spans” of the monitoring span also occurs, the UE is the PDCCH for the search space set X for all monitoring spans.
  • Candidate mapping/allocation is stopped, and PDCCH monitoring can be performed only up to a set of search spaces prior to that. The UE may perform PDCCH monitoring accordingly.
  • the UE may stop mapping/assignment of PDCCH candidates to the search space set X for all monitoring spans, and perform PDCCH monitoring only up to the previous search space set.
  • the UE may perform PDCCH monitoring accordingly.
  • the PDCCH candidate mapping/allocation for the search space set X is stopped, and the previous search space set PDCCH monitoring can only be performed up to.
  • the mapping/allocation of PDCCH candidates to the search space set X is stopped, but the capability is not exceeded among the search space sets of the next priority (e.g., search space sets X+1, X+2, ). If there is a search space set to be searched, PDCCH candidate mapping/allocation may be performed for the search space and PDCCH monitoring may be performed.
  • the UE may continue to perform PDCCH candidate mapping/allocation for the remaining monitoring span until the capacity for the maximum number of PDCCH candidates that can be monitored per slot is not exceeded. The UE may perform PDCCH monitoring accordingly.
  • the mapping/allocation of the PDCCH candidates for the search space set X is stopped, and the previous search PDCCH monitoring can be performed only up to the space set. (Or stop the mapping/allocation of PDCCH candidates to the search space set X, but the capability is not exceeded among the search space sets of the next priority (e.g., search space sets X+1, X+2, ).
  • PDCCH candidate mapping/allocation is performed for the search space, and PDCCH monitoring is performed.
  • the remaining monitoring span exceeds the ability for the maximum number of PDCCH candidates that can be monitored per slot.
  • PDCCH candidate mapping/allocation is continuously performed until not performed. The UE performs PDCCH monitoring accordingly.
  • the UE checks whether it exceeds the maximum number of PDCCH candidates that it can monitor and/or the maximum number of non-overlapping CCEs in a specific serving cell based on the discovery space set and CORESET that received the corresponding configuration. And, if necessary, some search space sets (or some PDCCH candidate(s)) may be skipped/dropped without monitoring. This is referred to as "PDCCH overbooking checking and PDCCH drop". In some implementations of this specification, this operation may be allowed only in PCell and PSCell.
  • the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs is defined/reported as the capability of the UE. Can be considered. This is referred to as per span gap and duration based PDCCH monitoring capability.
  • the maximum number of PDCCH candidates that can be monitored by the UE in the slot and/or the maximum number of non-overlapping CCEs is defined as the capability of the UE, which is called per slot based PDCCH monitoring capability. do.
  • the UE sets whether to perform the PDCCH overbooking check and PDCCH drop based on the slot-based PDCCH monitoring capability, or the PDCCH overbooking check and PDCCH drop based on the span gap and period-based PDCCH monitoring capability. You can receive it by itself (eg, by carrier). For example, when the UE receives a setting to perform PDCCH monitoring based on the maximum number of span-specific PDCCH candidates and non-overlapping CCEs in the serving cell, the UE performs PDCCH monitoring based on the maximum number limit per span; otherwise, the slot PDCCH monitoring can be performed based on the maximum number of each.
  • Option 1 For a serving cell (or carrier) that has received a setting to perform a PDCCH overbooking check and a PDCCH drop based on a span gap and period-based PDCCH monitoring capability, the UE performs a PDCCH overbooking check and a PDCCH drop.
  • the setting for the span to be done can be received through a higher layer signal from the BS in advance.
  • the UE may receive a setting regarding an index of a span to perform a PDCCH overbooking check and a PDCCH drop or a combination of indexes of a plurality of spans through a higher layer signal in advance.
  • the span(s) for the UE to perform PDCCH overbooking check and PDCCH drop may be set separately or independently for each span pattern.
  • the span pattern can be defined as the gap and span period between each first symbol of two consecutive spans.
  • the UE performs a PDCCH overbooking check and PDCCH drop only for a span (or a combination of a plurality of span indices) that has received a configuration for a PDCCH overbooking and/or a PDCCH drop for a corresponding span. can do.
  • the UE may not expect that PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability is configured for the remaining span(s) in the slot.
  • the BS may perform PDCCH overbooking or PDCCH overbooking with span #0 and span #1. ) Can be set.
  • the UE has the number of PDCCH candidates for each span on the cell and the number of non-overlapping CCEs greater than the corresponding number that the UE can monitor for each span on the cell. You can't expect it.
  • the UE assumes that the BS can set more PDCCH candidates in the cell than the UE's capability for span #0 and span #1, and span #0 and span #1 for span #0 and span #1.
  • PDCCH candidates to be monitored by the UE may be allocated based on a gap and period-based PDCCH monitoring capability.
  • the UE may not include PDCCH candidate(s) (of the search space set) exceeding the capability of the UE among the PDCCH candidates configured for the span #0 or the span #1 in the PDCCH candidate to be monitored by the UE.
  • the UE may not expect the BS to set PDCCH candidates exceeding the capabilities of the UE for span #2 in which the BS does not provide configuration for PDCCH overbooking. For example, for span #2, the UE considers that the number of PDCCH candidates and/or non-overlapping CCEs belonging to the span does not exceed the corresponding number according to the capability of the UE, and needs to check whether PDCCH overbooking Without it, all PDCCH candidates belonging to the span #2 can be monitored.
  • the UE checks the PDCCH overbooking and drops the PDCCH only for the span in which CSS is included among the span (or a combination of multiple span indices) that has received the settings for the PDCCH overbooking and/or PDCCH drop for the corresponding span. In the remaining span(s) in the slot, it may not be expected that PDCCH monitoring exceeding the span gap and the based PDCCH monitoring capability for each period is set.
  • the UE overbooks the PDCCH only for the span in which the CSS of the lowest/highest index is included among the span (or a combination of multiple span indices) that received the PDCCH overbooking and/or the PDCCH drop setting for the corresponding span. It may not be expected that the booking check and PDCCH drop are performed, and the PDCCH monitoring exceeding the span gap and the PDCCH monitoring capability based on the period is set in the remaining span(s) in the slot.
  • the span index may be replaced by the start symbol of the span (and/or symbols corresponding to the gap between spans).
  • Option 2 For a serving cell (or carrier) that has received a setting to perform a PDCCH overbooking check and a PDCCH drop based on a span gap and period-based PDCCH monitoring capability, the UE performs a PDCCH overbooking check and a PDCCH drop.
  • a setting regarding the maximum number of spans to be made can be received through an upper layer signal.
  • the UE may report to the BS as UE capability for the maximum number.
  • the UE Starting from the first span in the slot, the UE performs PDCCH overbooking check and PDCCH drop only for the number of spans corresponding to the maximum number, and the remaining span(s) in the slot monitors the span gap and period-based PDCCH It may not be expected that PDCCH monitoring that exceeds the capability is set. For example, if the maximum number of spans in which the BS can perform PDCCH overbooking is 1, the UE includes the number of PDCCH candidates per span on the cell and the number of non-overlapping CCEs except for the first span of each slot. It may not be expected that the number is greater than the corresponding number that the UE can monitor for each span on the cell.
  • the UE selects more PDCCH candidates than the capability of the UE for span #0, which is the first span in the slot. Assuming that the cell can be set, PDCCH monitoring can be performed, and for the remaining spans other than the span #0 among spans in the slot, it is assumed that the BS does not set more PDCCH candidates than the capability of the UE. PDCCH monitoring can be performed.
  • the UE when the maximum number of spans in which the BS can perform PDCCH overbooking is 1, the UE is based on the span gap and period-based PDCCH monitoring capability for the span #0, and the PDCCH to be monitored by the UE Can assign candidates.
  • the UE is among the PDCCH candidates set for the span #0 (e.g., PDCCH candidates set for the search space sets 0 and 1 of FIG. 9) that exceeds the capability of the UE (of the search space set) PDCCH candidate(s) It may not be included in the PDCCH candidate to be monitored by the UE.
  • the UE may not expect the BS to set PDCCH candidates exceeding the capability of the UE for spans other than the first one of spans in the slot.
  • the UE considers that the number of PDCCH candidates and/or non-overlapping CCEs belonging to the corresponding span does not exceed the corresponding number according to the capability of the UE, and the PDCCH is over All PDCCH candidates belonging to each of the span #1 and span #2 can be monitored without the need to check whether to book.
  • the UE implementation complexity can be reduced because the UE only needs to perform operations related to PDCCH overbooking and drops for a certain number of spans from the first span of the slot.
  • the BS can provide PDCCH monitoring-related settings for a certain number of spans from the first span of the slot, regardless of UE capability, BS configuration flexibility can also be obtained.
  • the index of the first span (or the symbol position in the time domain based on the DL subcarrier interval) to perform the PDCCH overbooking check and the PDCCH drop is set together, and the UE is
  • the PDCCH overbooking check and PDCCH drop are performed only on the span(s), and in the remaining span(s) in the slot, it may not be expected that PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability is set.
  • the UE performs PDCCH overbooking check and PDCCH drop only for the maximum number of span(s) from the first span(s) of span(s) including CSS, and the remaining span(s) in the slot It may not be expected that PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability is set.
  • the UE performs PDCCH overbooking check and PDCCH drop only for the maximum number of CSS span(s) from the first span of spans (hereinafter, CSS spans) in which CSS is included, and the remaining in the slot In the span(s), it may not be expected that PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability is set. This may be for allowing PDCCH overbooking and defining a UE operation for the span in which the CSS is included because it may require more PDCCH monitoring than the span in which the CSS is not included.
  • the UE performs PDCCH overbooking check and PDCCH drop only for the maximum number of span(s) from the span including the lowest/highest index CSS, and the remaining span(s) in the slot It may not be expected that PDCCH monitoring that exceeds the PDCCH monitoring capability based on gaps and periods is set.
  • the UE performs PDCCH overbooking check and PDCCH drop only for the maximum number of CSS span(s) from the first span among spans in which CSS of the lowest/highest index is included, and the remaining span in the slot In (s), it may not be expected that PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability is set.
  • Option 3 For a serving cell (or carrier) that has received a setting to perform a PDCCH overbooking check and a PDCCH drop based on a span gap and period-based PDCCH monitoring capability, the UE performs a PDCCH overbooking check and a PDCCH drop.
  • the setting of the start symbol (or start symbols of a plurality of monitoring times) of the monitoring period to be performed may be received in advance through an upper layer signal.
  • the UE performs the PDCCH overbooking check and PDCCH drop only for the monitoring timing (or a combination of multiple monitoring timings) that received the configuration for the PDCCH overbooking for the corresponding monitoring timing (or a combination of multiple monitoring timings), and In the remaining monitoring period(s), it may not be expected that PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability is set.
  • the BS uses symbol indexes #0 and #8, and the likelihood that the BS performs PDCCH overbooking or PDCCH overbooking is at the time of monitoring. It can be set as the starting symbol index. Referring to FIG.
  • the UE assumes that the BS can set more PDCCH candidates in the cell for span #0 and span #2 than the capability of the UE, and for span #0 and span #2, span PDCCH candidates to be monitored by the UE may be allocated based on a gap and period-based PDCCH monitoring capability.
  • the UE may not include PDCCH candidate(s) (of the search space set) exceeding the capability of the UE among the PDCCH candidates set for the span #0 or the span #2 in the PDCCH candidate to be monitored by the UE.
  • the UE may not expect the BS to set PDCCH candidates exceeding the capabilities of the UE for span #1 in which the BS does not provide the setting regarding the start symbol index of the monitoring timing related to the PDCCH overbooking.
  • the UE considers that the number of PDCCH candidates and/or non-overlapping CCEs belonging to the span does not exceed the corresponding number according to the capability of the UE, and needs to check whether PDCCH overbooking Without it, all PDCCH candidates belonging to the span #1 can be monitored.
  • the UE receives the setting for the PDCCH overbooking for the corresponding monitoring time (or a combination of multiple monitoring times) when the monitoring time (or the combination of a plurality of monitoring occasions) of the CSS PDCCH overbooking check and PDCCH drop are performed only during the monitoring period in which is included, and in the remaining monitoring period(s) in the slot, it may not be expected that PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability is set.
  • the UE includes the CSS of the lowest/highest index among the monitoring timing (or combination of multiple monitoring timings) that received the setting for the PDCCH overbooking for the monitoring timing (or a combination of multiple monitoring timings).
  • PDCCH overbooking check and PDCCH drop are performed only at the monitoring timing (s), and in the remaining monitoring timing (s) in the slot, it may not be expected that PDCCH monitoring exceeding the span gap and the PDCCH monitoring capability based on periods is set.
  • the UE does not perform the PDCCH overbooking check and/or PDCCH drop (or the PDCCH overbooking check and/or) for a span including a search space set for which monitoring for a specific DCI format is configured.
  • rules may be defined.
  • the UE performs a PDCCH overbooking check and/or PDCCH drop only for a span that does not include a search space set for which monitoring for a specific DCI format is set (or the PDCCH overbooking check and/or the target of the PDCCH drop. So that) rules can be defined.
  • the DCI format may include a DL preemption indication, and/or a UL cancellation indication, and/or a DCI for the purpose of indicating a slot format.
  • Fields defined in DCI formats are mapped to information bits a 0 to a A-1 as follows.
  • the first field of the DCI format is mapped to the lowest order information bit a 0 , and each successive field is mapped to higher order information bits.
  • the most significant bit (MSB) of each field is mapped to the lowest order information bit for that field. For example, the MSB of the first field is mapped to a 0. If the number of information bits in the DCI format is less than 12 bits, zeros are appended to the DCI format until the payload size is 12. If necessary, the size of each DCI format is adjusted according to the following DCI size alignment.
  • DCI size alignment is performed to reduce the complexity of blind decoding by the UE. For example, in some scenarios, if necessary, padding or truncation is applied to DCI formats according to the following steps executed in the following order:
  • N RB UL,BWP is the size of the initial UL BWP.
  • N RB DL,BWP is given by:
  • DCI format 0_0 is monitored in CSS and prior to padding (prior to), if the number of information bits in the DCI format 0_0 is less than the payload size of the DCI format 1_0 monitored in CSS for scheduling the same serving cell, The number of zero padding bits is generated for DCI format 0_0 until the payload size is equal to that of the DCI format 1_0.
  • DCI format 0_0 is monitored in CSS, and if the number of information bits in the DCI format 0_0 prior to truncation is greater than the payload size of the DCI format 1_0 monitored in CSS for scheduling the same serving cell, the DCI format 0_0
  • the bitwidth of the frequency domain resource allocation field in the DCI format 0_0 is reduced by truncating the first few MBSs so that the size becomes the same as the size of the DCI format 1_0.
  • N RB UL,BWP is the size of the active UL BWP.
  • N RB DL,BWP is the size of the active DL BWP.
  • the payload size is the Zeros are attached to the DCI format 0_0 until it is equal to that of DCI format 1_0.
  • the payload size Zeros are attached to the DCI format 1_0 until is equal to that of the DCI format 0_0.
  • DCI format 0_1 When monitored in USS, if the size of DCI format 0_1 is the same as that of DCI format 0_0/1_0 monitored in another USS, zero padding of 1 bit is attached to DCI format 0_1.
  • DCI format 1_1 When monitored in USS, if the size of DCI format 1_1 is the same as that of DCI format 0_0/1_0 monitored in other USS, zero padding of 1 bit is attached to DCI format 1_1.
  • the total number of different DCI sizes is not more than 4 for that cell
  • the total number of different DCI sizes with C-RNTI configured to monitor is not more than 3 for that cell.
  • N RB DL,BWP is given by:
  • N RB UL,BWP is the size of the initial UL BWP.
  • the payload size is generated for DCI format 0_0 monitored in USS until is equal to that of the DCI format 1_0 monitored in USS.
  • the DCI format 0_0 monitored by the USS prior to truncation is greater than the payload size of the DCI format 1_0 monitored by the USS for scheduling the same serving cell, the DCI format 0_0 monitored by the USS
  • the bitwidth of the frequency domain resource allocation field in the DCI format 0_0 is reduced by truncating the first few MBSs so that the size becomes the same as the size of the DCI format 1_0 monitored in the USS.
  • the UE is not expected to process the configuration resulting in the following after applying the steps above:
  • the total number of different DCI sizes set to monitor is more than 4 for that cell;
  • the total number of different DCI sizes with C-RNTI configured to monitor is more than 3 for that cell;
  • DCI format 0_0 in USS is the same as DCI format 0_1 in another USS; or
  • DCI format 1_0 in USS is the same as DCI format 1_1 in other USS.
  • the UE and BS may perform the DCI size alignment process.
  • the BS may set parameters affecting the DCI size, and the UE may determine the DCI size(s) to be monitored by the UE in a corresponding cell based on the parameters.
  • the parameters affecting the DCI size for example, frequency domain resource allocation, time domain resource allocation, PDSCH-to-HARQ feedback timing indicator, antenna port, BWP indicator, and/or SRS resource indicators influence the DCI size. I can go crazy.
  • the UE and BS may determine whether to perform a DCI size alignment process for a cell based on the above parameters.
  • the BS may transmit DCI(s) on the corresponding cell based on the DCI size(s) adjusted according to the DCI size alignment process.
  • the UE expects to transmit DCI(s) having the DCI size(s) adjusted according to the DCI size alignment process for the cell on the cell, and may perform DCI monitoring (that is, PDCCH monitoring). In other words, the UE may perform DCI monitoring based on the DCI size(s) adjusted according to the DCI size alignment process for the cell.
  • DCI monitoring that is, PDCCH monitoring
  • DCI format 0_1/1_1 and DCI format 0_2/1_2 are all monitored in the same search space
  • DCI format 0_1/1_1 and DCI format 0_2/ When the size of 1_2 becomes the same, the UE may not be able to distinguish between DCI format 0_1/1_1 and DCI format 0_2/1_2. In order to prevent such a situation, the following measures can be considered.
  • the UE may perform x-bit zero padding (or x-bit zero padding in 0_2/1_2) in DCI format 0_1/1_1.
  • zero padding may be performed by increasing x until it does not exceed the UE's DCI size budget.
  • the DCI format(s) defined/appointed in advance, set through a higher layer signal, or associated with a specific priority (e.g., low priority index)/set It may be determined to be the DCI format(s) subject to zero padding.
  • the PDCCH candidate(s) may be grouped and defined/promised to assume a specific DCI format, or grouping information may be set to the UE through a higher layer signal.
  • a PDCCH candidate with an odd index is regarded as DCI format 0_1/1_1
  • a PDCCH candidate with an even index is considered as DCI format 0_2/1_2
  • a rule may be defined so that the UE decodes .
  • a rule may be defined so that a value of the DMRS scrambling ID applied to the same search space is applied differently for each DCI format. For example, the UE applies the DMRS scrambling ID value set in the CORESET associated with the search space as it is for a specific DCI format(s), and offsets the DMRS scrambling ID value for the remaining DCI format(s). Rules can be defined to apply the applied value.
  • the problem that the DCI format size is the same and thus the DCI format cannot be distinguished may occur even when the DCI format 0_1/1_1 and the DCI format 0_2/1_2 are set in different search spaces. In order to prevent such a situation, the following measures can be considered.
  • Option 1 The UE considers to be DCI format(s) set to monitor in a search space of a lower index, and a rule may be defined to decode.
  • the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs will be defined/reported as the capability of the UE. I can. This may depend on (1) processing time for channels such as the PDCCH and PDSCH and PUCCH (or PUSCH) for HARQ-ACK transmission therefor, or (2) processing time for channels such as PDCCH and PUSCH. have.
  • the PDCCH processing time of the UE As an example, as the processing time from processing for the PDSCH to completion of processing for channels such as PUCCH (or PUSCH) for HARQ-ACK transmission for the PDSCH becomes shorter, the PDCCH processing time of the UE Also, since it will be shortened, the maximum number of PDCCH candidates that can be monitored within one monitoring time/span and/or the maximum number of non-overlapping CCEs per slot can also be reduced.
  • the maximum number of PDCCH candidates that the UE can monitor for each combination of the "span period" and the "minimum gap between spans" of the monitoring span The number and/or capability for the maximum number of non-overlapping CCEs may be reported separately (differently).
  • PDCCH candidates that the UE can monitor for each combination of "span period” and "minimum gap between spans" of the monitoring span The ability for the maximum number of and/or the maximum number of non-overlapping CCEs may be reported separately (differently).
  • a plurality of PDSCH processing capabilities / PUSCH timing capabilities are defined/configured/instructed for one carrier or cell, for example, separate (different) PDSCH processing for a plurality of PDSCHs/PUSCHs in one carrier/cell
  • the capability / PUSCH timing capability is applied, the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs for each combination of the "span period" and the "minimum gap between spans" of the monitoring span
  • There may be a need for rules on which of the plurality of values defined for is to be used.
  • Option 1 When a plurality of PDSCH processing capabilities or PUSCH timing capabilities are defined/set/instructed for one carrier or cell, for example, separate (different ) When the PDSCH processing capability or PUSCH timing capability is applied, the UE can monitor for each combination of the "span period" of the monitoring span defined for the PDSCH processing capability 2 / PUSCH timing capability 2 and the "minimum gap between spans"
  • the maximum number of PDCCH candidates and/or the maximum number of non-overlapping CCEs is regarded as the capability that the UE can support, whereby the UE can support for a combination of a specific “span period” and “minimum gap between spans”
  • a rule may be defined such that the maximum number of PDCCH candidates that can be monitored and/or the maximum number of non-overlapping CCEs is determined.
  • the BS is the UE based on the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs for each combination of the “span period” and “minimum gap between spans” of the monitoring span derived accordingly.
  • PDCCH monitoring-related parameter(s) to be given to the user are determined and set to the UE, and the PDCCH may be transmitted accordingly.
  • the BS causes a defined monitoring span for PDSCH processing capability 2 / PUSCH timing capability 2
  • the maximum number of PDCCH candidates and/or the maximum number of non-overlapping CCEs that can be monitored by the UE for each combination of "span period" and "minimum gap between spans" of (hence the smaller of the plurality of capability values) This is to allow the UE to derive the monitoring capability of the UE, and to allow the BS to provide the appropriate PDCCH settings (eg, PDCCH related parameters such as CORESET, search space, etc.) to the UE.
  • PDCCH settings eg, PDCCH related parameters such as CORESET, search space, etc.
  • Option 2 When a plurality of PDSCH processing capabilities or PUSCH timing capabilities are defined/configured/instructed for one carrier or cell, for example, separate (different ) When PDSCH processing capability or PUSCH timing capability is applied, the maximum number of PDCCH candidates that the UE can monitor and/or non-overlapping CCE for each combination of "span period" and "minimum gap between spans" of the monitoring span The smallest value among a plurality of values defined/reported as the maximum number of them is regarded as the capability that the UE can support, thereby monitoring that the UE can support for a combination of a specific “span period” and “minimum gap between spans” A rule may be defined such that the maximum number of possible PDCCH candidates and/or the maximum number of non-overlapping CCEs is determined.
  • the BS is based on the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs for each combination of the “span period” and “minimum gap between spans” of the monitoring span derived accordingly.
  • PDCCH monitoring to be given to a UE is determined and set to the UE, and PDCCH can be transmitted accordingly.
  • the maximum number of PDCCH candidates and/or the maximum number of non-overlapping CCEs that the UE can monitor for each combination of the “span period” and the “minimum gap between spans” of the monitoring span of a smaller value is always The maximum number of monitorable PDCCH candidates and/or the maximum of non-overlapping CCEs that the UE can support for a combination of a certain “span period” and “minimum gap between spans”, which is regarded as the ability to support and thereby
  • a short time for PDCCH monitoring is allocated and the monitoring capability of the UE is derived based on this, and the BS sets the appropriate PDCCH (e.g. This is to enable the provision of PDCCH related parameters) to the UE.
  • Option 3 When a plurality of PDSCH processing capabilities or PUSCH timing capabilities are defined/set/instructed for one carrier or cell, for example, separate (different ) When the PDSCH processing capability or PUSCH timing capability is applied, the "span period" and “minimum gap between spans" of the monitoring span related to the PDSCH processing capability or PUSCH timing capability defined/set/instructed for a specific PDSCH/PUSCH
  • the UE can support for a combination of a specific “span period” and “minimum gap between spans” by the maximum number of PDCCH candidates that the UE can monitor for each combination of and/or the maximum number of non-overlapping CCEs
  • a rule may be defined such that the maximum number of PDCCH candidates that can be monitored and/or the maximum number of non-overlapping CCEs is determined.
  • the BS is based on the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs for each combination of the “span period” and “minimum gap between spans” of the monitoring span derived accordingly.
  • PDCCH monitoring to be given to a UE is determined and set to the UE, and PDCCH can be transmitted accordingly. Since the monitoring capability is determined by the PDSCH processing capability or PUSCH timing capability to be applied, the PDCCH monitoring capability is determined more flexibly, and the BS configures the PDCCH settings (e.g., PDCCH related parameters such as CORESET, search space, etc.) accordingly. This is to be able to provide to the UE.
  • PDCCH settings e.g., PDCCH related parameters such as CORESET, search space, etc.
  • the maximum number of monitorable PDCCH candidates and/or the maximum number of non-overlapping CCEs that the UE can support for a combination of a specific “span period” and “minimum gap between spans” by the above option(s) (Ability for) is determined, and the UE will skip monitoring for the monitoring timing/candidate/AL (set) of low priority according to a predefined priority (or the UE monitors the PDCCH exceeding the capability) You don't expect settings (e.g. CORESET settings, search space settings, etc.) BS can expect.
  • the PDSCH processing capability to be applied to a specific PDSCH or the PUSCH timing capability to be applied to a specific PUSCH is set through a higher layer signal, or explicitly indicated through a specific field of DCI, or (DL/UL It is classified through the search space to which the PDCCH (scheduling data) belongs, or by the CORESET to which the PDCCH (scheduling DL/UL data) belongs, or by RNTI, by DCI format, or by DCI size. Alternatively, it may be determined and classified according to the scheduling characteristics of the PDSCH/PUSCH (eg, PDSCH/PUSCH period, PDSCH/PUSCH priority), or may be classified through CRC masking of the PDCCH.
  • the scheduling characteristics of the PDSCH/PUSCH eg, PDSCH/PUSCH period, PDSCH/PUSCH priority
  • the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs will be defined/reported as the capability of the UE. I can.
  • the PDCCH monitoring setting e.g., parameters for the UE to acquire PDCCH such as CORESET setting, search space setting, etc.
  • the BS is based on the following option(s). It can be operated as.
  • a predefined priority e.g., priority including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • PDCCH candidates for monitoring may be mapped or allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring with respect to the search space set X in a specific monitoring span, the UE is the PDCCH for the search space set X only for the corresponding monitoring span.
  • the BS can expect that the UE performs PDCCH monitoring/allocation by the UE to stop candidate mapping/allocation and only up to the set of search spaces before that.
  • the BS can expect that the UE will continue to perform PDCCH candidate mapping/allocation until the capability is not exceeded.
  • the BS may expect the UE to perform PDCCH monitoring accordingly.
  • the BS can expect the UE to operate as follows: The UE performs PDCCH monitoring up to CSS, USS 0 and USS 1 in the first monitoring span, and USS 0, USS 1, USS 2, and USS in the second monitoring span. Perform PDCCH monitoring up to 3.
  • a predefined priority e.g., priority including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • PDCCH candidates for monitoring may be mapped/allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring for search space set X in a specific monitoring span, the UE is PDCCH for search space set X for all monitoring spans.
  • the BS can expect that the UE will stop candidate mapping/allocation and perform PDCCH monitoring only up to the set of search spaces before that.
  • the BS may expect the UE to perform PDCCH monitoring accordingly.
  • the BS can expect the UE to operate as follows: The UE performs PDCCH monitoring up to CSS, USS 0 and USS 1 in the first monitoring span, and PDCCH monitoring up to USS 0 and USS 1 in the second monitoring span. .
  • Option 3 For each monitoring span, a predefined priority (e.g., including ascending order of search space set ID: CSS set(s), USS set 0, USS set) until not exceeding the above capability. 1, USS set 2, ...), PDCCH candidates for monitoring may be mapped/allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring with respect to the search space set X in a specific monitoring span, the UE is the PDCCH for the search space set X for the corresponding monitoring span.
  • PDCCH candidate mapping/assignment is performed.
  • the BS can expect that the UE will perform PDCCH monitoring. In the remaining monitoring span, the BS can expect that the UE continues to perform PDCCH candidate mapping/allocation until the capability is not exceeded. The BS may expect the UE to perform PDCCH monitoring accordingly.
  • the BS may expect the UE to operate as follows: The UE performs PDCCH monitoring for CSS, USS 0, USS 1, and USS 3 in the first monitoring span, and USS 0, USS 1, in the second monitoring span. Perform PDCCH monitoring up to USS 2 and USS 3.
  • a predefined priority e.g., priority including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • PDCCH candidates for monitoring may be mapped/allocated.
  • mapping/allocation exceeding the above capability occurs while mapping/allocating PDCCH candidates for monitoring for search space set X in a specific monitoring span, PDCCH candidate mapping for search space set X for all monitoring spans/ PDCCH candidate if there is a search space set that stops allocation but does not exceed the above capability for all monitoring spans among the search space sets of the next priority (eg, search space sets X+1, X+2, ...)
  • the BS can expect that the UE performs mapping/assignment and PDCCH monitoring.
  • the BS may expect the UE to perform PDCCH monitoring accordingly.
  • the BS expects the UE to operate as follows.
  • the UE performs PDCCH monitoring for CSS, USS 0, USS 1, and USS 3 in the first monitoring span, and PDCCH monitoring up to USS 0, USS 1, USS 2, and USS 3 in the second monitoring span.
  • the maximum number of non-overlapping CCEs that can be monitored by the UE is defined/reported as the capability of the UE as the number of combinations of "span period" and "minimum gap between spans" of the monitoring span, while the UE monitors
  • the maximum number of possible PDCCH candidates may be defined/reported as the capability of the UE as the number per slot.
  • the BS may operate based on the following option(s).
  • Option 5 For each monitoring span, a predefined priority (e.g., including ascending order of search space set ID: CSS set(s), USS set 0, USS set) until not exceeding the above capabilities. 1, USS set 2, ...), PDCCH candidates for monitoring are mapped/allocated.
  • a predefined priority e.g., including ascending order of search space set ID: CSS set(s), USS set 0, USS set
  • mapping/allocating PDCCH candidates for monitoring while exceeding the capability for the maximum number of PDCCH candidates that can be monitored per slot, non-overlapping that can be monitored in a specific monitoring span If the maximum number of CCEs does not exceed the capability of each combination of the “span period” and “minimum gap between spans” of the monitoring span, when mapping/allocation occurs, the following schemes may be considered.
  • the BS can expect that the UE will perform PDCCH monitoring only up to the previous search space set and stop the PDCCH candidate mapping/allocation for the search space set X for all monitoring spans.
  • the BS may expect the UE to perform PDCCH monitoring accordingly.
  • the mapping/allocation of the PDCCH candidates for the search space set X is stopped, and PDCCH monitoring is only performed up to the search space set before that.
  • the BS can expect what the UE will do.
  • the mapping/allocation of PDCCH candidates to the search space set X is stopped, but the capability is not exceeded among the search space sets of the next priority (eg, search space sets X+1, X+2, ). If there is a search space set, the BS can expect that the UE performs PDCCH candidate mapping/allocation for the search space and the PDCCH monitoring.
  • the BS can expect that the UE performs PDCCH candidate mapping/allocation until the capacity for the maximum number of PDCCH candidates that can be monitored per slot is not exceeded.
  • the BS may expect the UE to perform PDCCH monitoring accordingly.
  • the PDCCH candidate mapping/allocation for the search space set X is stopped from the monitoring span (s 0) with the smallest (or most) number of PDCCH candidates for the search space X, and search before that
  • the BS can expect that the UE will perform PDCCH monitoring only up to the space set, or stop the mapping/allocation of PDCCH candidates to the search space set X, but the search space set of the next priority (eg, search space set X+1). , X+2, 7), if there is a set of search spaces in which the above capability is not exceeded, the BS can expect that the UE performs PDCCH candidate mapping/allocation for the corresponding search space and the PDCCH monitoring.
  • the BS can expect the UE to perform PDCCH candidate mapping/allocation until the capacity for the maximum number of PDCCH candidates that can be monitored per slot is not exceeded. Accordingly, it is expected that PDCCH monitoring will be performed.
  • the UE checks whether it exceeds the maximum number of PDCCH candidates that it can monitor and/or the maximum number of non-overlapping CCEs in a specific serving cell based on the discovery space set and CORESET that received the configuration. If necessary, some search space sets (or some PDCCH candidate(s)) may be skipped/dropped without monitoring. This is referred to as "PDCCH overbooking checking and PDCCH drop". In some implementations of this specification, this operation may be allowed only in PCell and PSCell.
  • the maximum number of PDCCH candidates that the UE can monitor and/or the maximum number of non-overlapping CCEs is defined/reported as the capability of the UE. Can be considered. This is referred to as per span gap and duration based PDCCH monitoring capability.
  • the maximum number of PDCCH candidates that can be monitored by the UE in the slot and/or the maximum number of non-overlapping CCEs is defined as the capability of the UE, which is called per slot based PDCCH monitoring capability. do.
  • the BS sets whether to perform the PDCCH overbooking check and PDCCH drop based on the slot-based PDCCH monitoring capability, or the PDCCH overbooking check and PDCCH drop based on the span gap and period-based PDCCH monitoring capability. It can be provided to the UE for each (eg, for each carrier). The UE sets whether to perform the PDCCH overbooking check and PDCCH drop based on the slot-based PDCCH monitoring capability, or the PDCCH overbooking check and PDCCH drop based on the span gap and period-based PDCCH monitoring capability. You can receive it by itself (eg, by carrier).
  • BS spans to perform PDCCH overbooking check and PDCCH drop may be previously set to the UE through an upper layer signal. For example, these settings may be provided for each span pattern.
  • the span pattern can be defined as the gap and span period between each first symbol of two consecutive spans.
  • the BS expects the UE to perform the PDCCH overbooking check and PDCCH drop only for the span (or a combination of multiple span indices) set to allow PDCCH overbooking, and the remaining span(s) in the slot is based on the span gap and period Do not configure PDCCH monitoring that exceeds the PDCCH monitoring capability.
  • the BS expects that the UE will perform the PDCCH overbooking check and PDCCH drop only for the span (or a combination of multiple span indices) that is set to allow PDCCH overbooking and includes CSS. In the remaining span(s), PDCCH monitoring that exceeds the span gap and period-based PDCCH monitoring capability is not set.
  • the BS recommends that the UE perform the PDCCH overbooking check and PDCCH drop only for the span in which the CSS of the lowest/highest index is included among the spans (or a combination of multiple span indices) set to allow PDCCH overbooking. Expect, and do not set the PDCCH monitoring exceeding the span gap and period-based PDCCH monitoring capability in the remaining span(s) in the slot.
  • the span index may be replaced by the start symbol of the span (and/or symbols corresponding to the gap between spans).
  • Option 2 For the serving cell (or carrier) set to the UE to perform PDCCH overbooking check and PDCCH drop based on span gap and period-based PDCCH monitoring capability, BS spans to perform PDCCH overbooking check and PDCCH drop The maximum number of can be set to the UE through a higher layer signal. (In some implementations, the UE may report to the BS as UE capability for the maximum number.
  • BS expects the UE to perform the PDCCH overbooking check and PDCCH drop only for the number of spans corresponding to the maximum number from the first span in the slot, and the span gap and period-based PDCCH in the remaining span(s) in the slot PDCCH monitoring that exceeds the monitoring capability may not be configured.
  • the BS sets the index of the first span (or the symbol position in the time domain based on the DL subcarrier interval) to perform the PDCCH overbooking check and PDCCH drop together, and the number corresponding to the maximum number from the span is set. It is expected that the UE performs the PDCCH overbooking check and PDCCH drop only for spans of, and the remaining span(s) in the slot may not configure PDCCH monitoring that exceeds the span gap and the PDCCH monitoring capability based on each period.
  • the BS expects the UE to perform the PDCCH overbooking check and PDCCH drop only for the number of span(s) corresponding to the maximum number from the first span among spans including CSS, and In the remaining span(s), PDCCH monitoring that exceeds the span gap and period-based PDCCH monitoring capability may not be set.
  • the BS expects to perform PDCCH overbooking check and PDCCH drop only for the maximum number of CSS span(s) from the first of spans (hereinafter, CSS spans) in which CSS is included, In the remaining span(s) in the slot, PDCCH monitoring that exceeds the span gap and period-based PDCCH monitoring capability may not be set. This may be for allowing PDCCH overbooking and defining UE operations for the span in which the CSS is included because it may require more PDCCH monitoring than the span in which the CSS is not included.
  • the BS expects the UE to perform the PDCCH overbooking check and PDCCH drop only for the number of span(s) corresponding to the maximum number from the span in which the CSS of the lowest/highest index is included, and the slot In the remaining span(s) of mine, PDCCH monitoring that exceeds the span gap and period-based PDCCH monitoring capability may not be set.
  • the BS allows the UE to perform PDCCH overbooking check and PDCCH drop only for the number of CSS span(s) corresponding to the maximum number from the first span among spans in which the lowest/highest index CSS is included. It is expected that, in the remaining span(s) in the slot, PDCCH monitoring that exceeds the span gap and period-based PDCCH monitoring capability may not be set.
  • BS performs PDCCH overbooking check and PDCCH drop for serving cells (or carriers) set to UE to perform PDCCH overbooking check and PDCCH drop based on span gap and period-based PDCCH monitoring capability
  • the setting for the start symbol (or start symbols of a plurality of monitoring times) of the monitoring period to be performed may be provided to the UE through a higher layer signal in advance.
  • the BS recommends that the UE perform the PDCCH overbooking check and PDCCH drop only for the monitoring timing (or a combination of multiple monitoring timings) that provided the setting for the PDCCH overbooking with respect to the monitoring timing (or a combination of multiple monitoring timings). In anticipation, in the remaining monitoring period(s) in the slot, PDCCH monitoring that exceeds the span gap and period-based PDCCH monitoring capability may not be set.
  • the BS only applies to the monitoring period (or combination of multiple monitoring periods) that includes the CSS during the monitoring period (or combination of multiple monitoring periods) that provided the PDCCH overbooking setting for the corresponding monitoring period (or a combination of multiple monitoring periods). Is expected to perform the PDCCH overbooking check and PDCCH drop, and in the remaining monitoring time(s) in the slot, the PDCCH monitoring that exceeds the span gap and period-based PDCCH monitoring capability may not be set.
  • the BS includes the CSS of the lowest/highest index among the monitoring period (or combination of multiple monitoring periods) that provided the setting for the PDCCH overbooking for the corresponding monitoring period (or a combination of multiple monitoring periods). It is expected that the UE performs the PDCCH overbooking check and PDCCH drop only during the monitoring period, and the span gap and period-based PDCCH monitoring capability may not be set at the remaining monitoring period(s) in the slot.
  • the BS may not expect the UE to perform the PDCCH overbooking check and/or PDCCH drop for a span including a search space set in which monitoring for a specific DCI format is configured.
  • a span including a set of search spaces for which monitoring for a specific DCI format is set it may not be expected that the UE considers the PDCCH overbooking check and/or the PDCCH drop target.
  • the BS may expect the UE to perform the PDCCH overbooking check and/or PDCCH drop only for a span in which the search space set for which monitoring for a specific DCI format is configured is not included.
  • the BS may consider the PDCCH overbooking check and/or the PDCCH drop target only for a span in which the search space set for which monitoring for a specific DCI format is set is not included.
  • the DCI format may include a DL preemption indication and/or a UL cancellation indication and/or a DCI for the purpose of indicating a slot format.
  • the DCI format 0_1/1_1 and DCI format 0_2/1_2 are all monitored in the same search space.
  • the DCI format 0_1/1_1 and DCI format 0_2/1_2 are When the size becomes the same, the UE may not be able to distinguish between DCI format 0_1/1_1 and DCI format 0_2/1_2. In order to prevent such a situation, the following measures can be considered.
  • the BS can set the DCI format so that a situation in which the DCI format size is set does not occur.
  • the BS may perform x-bit zero padding (or x-bit zero padding in 0_2/1_2) in DCI format 0_1/1_1.
  • zero padding may be performed by increasing x until it does not exceed the UE's DCI size budget.
  • the DCI format(s) defined/promised in advance, set to the UE through a higher layer signal, or associated with a specific priority (e.g., low priority index)/set is zero It may be determined to be the DCI format(s) to be padded.
  • the PDCCH candidate(s) may be grouped and defined/promised to assume a specific DCI format, or the BS may set grouping information to the UE through a higher layer signal.
  • a rule may be defined so that a PDCCH candidate with an odd index is a DCI format 0_1/1_1, and a PDCCH candidate with an even index is a DCI format 0_2/1_2, so that the BS encodes/transmits.
  • a rule may be defined so that a value of the DMRS scrambling ID applied to the same search space is applied differently for each DCI format.
  • the BS applies the DMRS scrambling ID value set in the CORESET associated with the search space as it is for a specific DCI format(s), and offsets the DMRS scrambling ID value for the remaining DCI format(s). Rules can be defined to apply the applied value.
  • the problem that the DCI format size is the same and thus the DCI format cannot be distinguished may occur even when the DCI format 0_1/1_1 and the DCI format 0_2/1_2 are set in different search spaces. In order to prevent such a situation, the following measures can be considered.
  • the BS can set the DCI format so that a situation in which the DCI format size is set does not occur.
  • a rule may be defined so that the BS encodes/transmits DCI in DCI format(s) set to be monitored in a search space of a lower index.
  • 10 and 11 illustrate a flow of a process for transmitting/receiving downlink control information based on some implementations of the present specification described above.
  • the UE may report the UE capability related to the processing time of the data channel to the BS (S1001).
  • the BS may provide settings related to PDCCH monitoring (eg, PDCCH configuration including PDCCH parameters such as CORESET, search spaces, etc. and parameters for acquiring PDCCH) to the UE in consideration of the UE capability (S1002). .
  • the BS may transmit a DL channel based on the configuration related to PDCCH monitoring (S1003).
  • the UE may receive/decode the PDCCH by performing PDCCH monitoring (S1004) based on the configuration.
  • the UE may report the UE capability related to PDCCH overbooking to the BS (S1101). For example, for each of one or more combinations (X, Y), the UE is expected to monitor i) the maximum number of PDCCH candidates that can be monitored by the UE and/or ii) the corresponding PDCCH candidates within the span. The maximum number of non-overlapped CCES that the UE is expected to monitor corresponding PDCCH candidates may be reported to the BS as UE capability for PDCCH overbooking.
  • the BS may provide settings related to PDCCH monitoring (e.g., PDCCH settings including PDCCH parameters such as CORESET, search spaces, and parameters for acquiring PDCCH) in consideration of UE capability for PDCCH overbooking ( S1102).
  • the BS may provide a configuration related to performing PDCCH overbooking to the UE.
  • the BS may transmit a DL channel based on the configuration related to PDCCH monitoring and/or UE capability related constraint(s) related to PDCCH monitoring (S1103).
  • the UE capability-related constraint(s) for PDCCH monitoring may include, for example, the maximum number of PDCCH candidates that the UE can monitor in the span and/or the maximum number of non-overlapping CCEs.
  • the UE may perform PDCCH monitoring based on the configuration for PDCCH monitoring and UE capability constraint(s) for PDCCH monitoring (S1104).
  • PDCCH monitoring may include receiving/decoding the PDCCH.
  • PDCCH monitoring may include performing a PDCCH overbooking check and/or PDCCH drop for a predefined/set span to allow PDCCH overbooking among spans within a slot. In some implementations of the present specification, PDCCH monitoring may not perform a PDCCH overbooking check on the remaining spans except for a predefined/set span to allow PDCCH overbooking among spans within a slot.
  • PDCCH monitoring for some of the PDCCH candidates belonging to the corresponding span may be dropped or skipped only in a predefined/set span so that PDCCH overbooking is allowed among spans within the slot, and the remaining span(s) in the slot ), PDCCH monitoring for all PDCCH candidates is always performed.
  • the PDCCH overbooking check is performed by the UE among PDCCH candidates belonging to the span based on constraints according to the PDCCH monitoring capability of the UE for a predefined/set span to allow PDCCH overbooking. It may include determining PDCCH candidates to do.
  • the UE does not perform PDCCH monitoring on the remaining PDCCH candidates that are not determined as PDCCH candidates to be monitored for the span.
  • the UE may always determine as PDCCH candidates to monitor all PDCCH candidates belonging to a corresponding span for a remaining span other than a predefined/set span so that PDCCH overbooking is allowed. .
  • the BS may set appropriate PDCCH monitoring related parameters based on the data/control channel processing related capability report of the UE and/or the UE capability report over PDCCH monitoring.
  • the BS may set appropriate PDCCH monitoring related parameters based on the data/control channel processing related capability report of the UE and/or the UE capability report over PDCCH monitoring.
  • more autonomous PDCCH transmission/reception may be performed.
  • the number of PDCCH overbooking checks that the UE must perform for a certain period is limited, so that the implementation complexity of the UE may be controlled.
  • Examples/methods of the present specification may be applied independently or two or more may be applied together.
  • the UE may perform operations according to some implementations of this specification for PDCCH reception.
  • the UE includes at least one transceiver; At least one processor; And at least one computer operably connectable to the at least one processor, and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present specification. May contain memory.
  • the processing apparatus for the UE includes at least one processor; And at least one computer operably connectable to the at least one processor, and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present specification. May contain memory.
  • the computer-readable storage medium may store at least one computer program including instructions that, when executed by at least one processor, cause the at least one processor to perform operations according to some implementations of the present specification.
  • the operations include: receiving a configuration related to the PDCCH; And performing PDCCH monitoring for reception of the PDCCH in a plurality of monitoring spans within the slot based on the setting.
  • Performing the PDCCH monitoring includes: some of the plurality of monitoring spans of the slot based on the maximum number of PDCCH candidates that can be monitored by the UE and the maximum number of non-overlapping CCEs in one monitoring span. It may include determining PDCCH candidates to be skipped in the PDCCH monitoring from among the PDCCH candidates belonging to.
  • the PDCCH monitoring may be performed based on the maximum number of PDCCH candidates per monitoring span and the maximum number of non-overlapping CCEs per monitoring span that the UE can monitor.
  • determining the PDCCH candidates to be skipped in the PDCCH monitoring may be performed only for the partial monitoring span and not the remaining monitoring spans. For example, performing the PDCCH monitoring: based on the maximum number of PDCCH candidates that can be monitored by the UE in one monitoring span and the maximum number of non-overlapping CCEs, monitoring the first N of the slot It may include determining PDCCH candidates to be skipped in the PDCCH monitoring among PDCCH candidates belonging to a span (ie, the earliest N monitoring spans in time among the monitoring spans of the slot). Where N is a predetermined positive integer. For example, N may be 1. In some implementations of this specification, determining the PDCCH candidates to be skipped in the PDCCH monitoring is performed only for the first N monitoring spans.
  • Performing the PDCCH monitoring includes: determining PDCCH candidates for monitoring based on the maximum number of PDCCH candidates belonging to the partial monitoring span of the slot (eg, the first N monitoring spans of the slot) can do.
  • the PDCCH candidates to be skipped in the PDCCH monitoring may be PDCCH candidates other than the PDCCH candidates for monitoring.
  • Performing the PDCCH monitoring always monitors all PDCCH candidates belonging to the remaining monitoring spans for the remaining monitoring spans except for a partial monitoring span (eg, the first N monitoring spans) of the slot among the plurality of monitoring spans. May include.
  • the operations may further include sending to the BS a report on the maximum number of monitored PDCCH candidates per span and the maximum number of non-overlapping CCEs per span for each of one or more combinations (X, Y).
  • Performing the PDCCH monitoring is based on receiving a setting instructing to perform PDCCH monitoring based on a PDCCH monitoring capability for each monitoring span for a serving cell, based on receiving the partial monitoring span of the slot on the serving cell (e.g., It may include applying the maximum numbers to the first N monitoring spans).
  • the BS may perform operations according to some implementations of this specification for PDCCH transmission.
  • BS includes at least one transceiver; At least one processor; And at least one computer operably connectable to the at least one processor, and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present specification.
  • the processing apparatus for the BS includes at least one processor; And at least one computer operably connectable to the at least one processor, and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present specification. May contain memory.
  • the computer-readable storage medium may store at least one computer program including instructions that, when executed by at least one processor, cause the at least one processor to perform operations according to some implementations of the present specification.
  • the operations include: transmitting a configuration related to the PDCCH; And transmitting at least one PDCCH in a plurality of monitoring spans within the slot based on the setting. Transmitting the at least one PDCCH: PDCCH belonging to a partial monitoring span of the slot based on the maximum number of PDCCH candidates that can be monitored by the UE and the maximum number of non-overlapping CCEs in one monitoring span. Among the candidates, it may include determining PDCCH candidates to be skipped in PDCCH monitoring by the UE.
  • determining the PDCCH candidates to be skipped in PDCCH monitoring by the UE is performed only for the partial monitoring span among the plurality of monitoring spans of the slot, and the remaining among the plurality of monitoring spans. May not be performed in the monitoring span.
  • transmitting the at least one PDCCH Based on the maximum number of PDCCH candidates and the maximum number of CCEs that can be monitored by the UE in one monitoring span, the first N monitoring spans of the slot It may include determining PDCCH candidates to be skipped in PDCCH monitoring by the UE from among the belonging PDCCH candidates. Where N is a predetermined positive integer. For example, N may be 1. In some implementations of this specification, determining the PDCCH candidates to be skipped in PDCCH monitoring by the UE is performed only for the first N monitoring spans.
  • Transmitting the at least one PDCCH determining PDCCH candidates to be monitored by the UE based on the maximum number of PDCCH candidates belonging to the partial monitoring span (eg, the first N monitoring spans of the slot) May include.
  • the PDCCH candidates to be skipped in PDCCH monitoring by the UE may be remaining PDCCH candidates excluding the PDCCH candidates to be monitored by the UE.
  • Transmitting the at least one PDCCH includes: all PDCCH candidates belonging to the remaining monitoring spans for the remaining monitoring spans except for the partial monitoring spans (eg, the first N monitoring spans of the slot) among the plurality of monitoring spans. It may include (always) determining that they are PDCCH candidates monitored by the PDCCH.
  • the operations may further include receiving a report from the UE regarding the maximum number of monitored PDCCH candidates per span and the maximum number of non-overlapping CCEs per span for each of one or more combinations (X, Y).
  • Transmitting the at least one PDCCH is based on transmitting to the UE a configuration instructing to perform PDCCH monitoring based on a PDCCH monitoring capability for each monitoring span for a serving cell, and the portion of the slot on the serving cell It may include applying the maximum numbers to the monitoring span (eg, the first N monitoring spans).
  • Implementations of the present specification may be used in a wireless communication system, a base station or user equipment, and other equipment.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un UE peut recevoir une configuration associée à un PDCCH. L'UE peut réaliser, sur la base de la configuration, la réalisation d'une surveillance PDCCH dans un nombre M de portées de surveillance à l'intérieur d'un intervalle afin de recevoir le PDCCH. La réalisation de la surveillance PDCCH peut comprendre, sur la base du nombre maximal de candidats PDCCH qui pourraient être surveillés par l'UE dans une portée de surveillance, et du nombre maximal de CCE non chevauchants, la détermination, parmi des candidats PDCCH appartenant au premier nombre N de portées de surveillance à l'intérieur de l'intervalle, des candidats PDCCH qui doivent être sautés pendant la surveillance PDCCH. La détermination des candidats PDCCH qui doivent être sautés pendant la surveillance PDCCH peut être réalisée pour seulement le premier nombre N de portées de surveillance. N est un nombre entier positif prédéterminé.
PCT/KR2020/010219 2019-10-03 2020-08-03 Procédé de réception de pdcch, équipement utilisateur, dispositif et support de stockage, ainsi que procédé de transmission de pdcch et station de base WO2021066311A1 (fr)

Applications Claiming Priority (6)

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US201962910440P 2019-10-03 2019-10-03
US62/910,440 2019-10-03
US201962941853P 2019-11-28 2019-11-28
US62/941,853 2019-11-28
US202062970680P 2020-02-05 2020-02-05
US62/970,680 2020-02-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023010420A1 (fr) * 2021-08-05 2023-02-09 Zte Corporation Procédés et systèmes de détermination d'informations associées à un décodage aveugle dans des réseaux sans fil
WO2023133692A1 (fr) * 2022-01-11 2023-07-20 深圳传音控股股份有限公司 Procédé de traitement, dispositif de communication et support de stockage
WO2023208074A1 (fr) * 2022-04-27 2023-11-02 FG Innovation Company Limited Procédé de configuration de surveillance d'informations de commande de liaison descendante et dispositif terminal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190268206A1 (en) * 2018-02-23 2019-08-29 Qualcomm Incorporated Physical downlink control channel (pdcch) aggregation level (al) design for new radio (nr) ultra-reliable low latency communication (urllc)

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190268206A1 (en) * 2018-02-23 2019-08-29 Qualcomm Incorporated Physical downlink control channel (pdcch) aggregation level (al) design for new radio (nr) ultra-reliable low latency communication (urllc)

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CATT: "PDCCH enhancements for URLLC", 3GPP DRAFT; R1-1908594, vol. RAN WG1, 17 August 2019 (2019-08-17), Prague, CZ, pages 1 - 14, XP051765202 *
HUAWEI, HISILICON: "PDCCH enhancements for URLLC", 3GPP DRAFT; R1-1908051, vol. RAN WG1, 17 August 2019 (2019-08-17), Prague, Czech Republic, pages 1 - 13, XP051764674 *
INTEL CORPORATION: "Downlink control enhancements for eURLLC", 3GPP DRAFT; R1-1908645 INTEL - EURLLC PDCCH ENHANCEMENTS, vol. RAN WG1, 17 August 2019 (2019-08-17), Prague, CZ, pages 1 - 15, XP051765253 *
LG ELECTRONICS: "PDCCH enhancements for NR URLLC", 3GPP DRAFT; R1-1908541 URLLC PDCCH, vol. RAN WG1, 17 August 2019 (2019-08-17), Prague, Czech Republic, pages 1 - 6, XP051765149 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023010420A1 (fr) * 2021-08-05 2023-02-09 Zte Corporation Procédés et systèmes de détermination d'informations associées à un décodage aveugle dans des réseaux sans fil
WO2023133692A1 (fr) * 2022-01-11 2023-07-20 深圳传音控股股份有限公司 Procédé de traitement, dispositif de communication et support de stockage
WO2023208074A1 (fr) * 2022-04-27 2023-11-02 FG Innovation Company Limited Procédé de configuration de surveillance d'informations de commande de liaison descendante et dispositif terminal

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