WO2020145595A1 - Procédé de transmission et de réception de canal physique partagé de commande de liaison montante dans un système de communication sans fil, et dispositif s'y rapportant - Google Patents

Procédé de transmission et de réception de canal physique partagé de commande de liaison montante dans un système de communication sans fil, et dispositif s'y rapportant Download PDF

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Publication number
WO2020145595A1
WO2020145595A1 PCT/KR2020/000183 KR2020000183W WO2020145595A1 WO 2020145595 A1 WO2020145595 A1 WO 2020145595A1 KR 2020000183 W KR2020000183 W KR 2020000183W WO 2020145595 A1 WO2020145595 A1 WO 2020145595A1
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Prior art keywords
terminal
fra
field
pdsch
pdcch
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PCT/KR2020/000183
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English (en)
Korean (ko)
Inventor
김규석
김형태
이길봄
김기준
강지원
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엘지전자 주식회사
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Publication of WO2020145595A1 publication Critical patent/WO2020145595A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • 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

  • MIMO Massive Multiple Input Multiple Output
  • NOMA Non-Orthogonal Multiple Access
  • Super Wideband Various technologies such as wideband support and device networking have been studied.
  • This specification proposes a method and apparatus for efficiently signaling frequency or time resource allocation in multiple PDCCH-based multiple TRP transmission environments.
  • the present specification proposes a method and apparatus for indicating that a new definition scheme is applied to a frequency resource allocation (FRA) field in DCI, or to interpret differently for an existing FRA field.
  • FRA frequency resource allocation
  • this specification proposes a method for constructing a FRA field in DCI when instructing that a new definition method is applied to a FRA field in DCI, or when interpreting differently for an existing FRA field.
  • the present specification proposes a method and apparatus for indicating that a new definition scheme is applied to a time resource allocation (TRA) field in DCI, or to interpret differently for an existing TRA field.
  • TRA time resource allocation
  • this specification proposes a method for constructing a TRA field in DCI when instructing that a new definition scheme is applied to a TRA field in DCI, or when interpreting differently for an existing TRA field.
  • This specification proposes a method for receiving a physical downlink shared channel (PDSCH) in a wireless communication system.
  • the method performed by the terminal includes receiving downlink control information (DCI) including a frequency resource allocation (FRA) field from a base station and based on the FRA field.
  • DCI downlink control information
  • FRA frequency resource allocation
  • Including the step of receiving the PDSCH from the base station, the size of the FRA field and a resource block related index indicated in the FRA field may be defined based on the number of PDSCHs simultaneously transmitted to the terminal. .
  • the method may further include receiving analysis information on the FRA field from the base station.
  • receiving setting information including group information for control resource sets (Control Resource Set, CORESET) from the base station, and the FRA fields based on the group information by the terminal may further include the step of assuming that it is defined based on the number of PDSCHs transmitted simultaneously.
  • the number of PDSCHs simultaneously transmitted to the terminal may be the number of different groups of set control resource sets (CORESETs).
  • the number of PDSCHs simultaneously transmitted to the terminal may be the number of PDSCHs in which a time domain overlaps in a slot.
  • a terminal receiving a physical downlink shared channel is operably connected to one or more transceivers, one or more processors, and the one or more processors And, when executed by the one or more processors, includes one or more memories storing instructions to perform the operations, wherein the operations include a Frequency Resource Allocation (FRA) field And receiving the downlink control information (DCI) from the base station, and receiving the PDSCH from the base station based on the FRA field, indicating the size of the FRA field and the FRA field.
  • FRA Frequency Resource Allocation
  • DCI downlink control information
  • the resource block-related index may be defined based on the number of PDSCHs simultaneously transmitted to the terminal.
  • this specification proposes a method for transmitting a physical downlink shared channel (PDSCH) in a wireless communication system.
  • the method performed by the base station transmits downlink control information (DCI) including a frequency resource allocation (FRA) field to a terminal, and based on the FRA field.
  • DCI downlink control information
  • FRA frequency resource allocation
  • Including the step of transmitting the PDSCH to the terminal, the size of the FRA field and a resource block related index indicated in the FRA field may be defined based on the number of PDSCHs simultaneously transmitted to the terminal. .
  • the method may further include transmitting analysis information on the FRA field to the terminal.
  • the method may further include transmitting setting information including group information for control resource sets (CORESET) to the terminal.
  • CORESET control resource sets
  • a base station transmitting a physical downlink shared channel is operably connected to one or more transceivers, one or more processors, and the one or more processors, , When executed by the one or more processors, includes one or more memories storing instructions to perform the operations, the operations comprising a frequency resource allocation (FRA) field And transmitting downlink control information (DCI) to the terminal, and transmitting the PDSCH to the terminal based on the FRA field, indicating the size of the FRA field and the FRA field.
  • the resource block-related index may be defined based on the number of PDSCHs simultaneously transmitted to the terminal.
  • the one or more processors the device, the frequency resource allocation (Frequency Resource Allocation, FRA) Set to receive downlink control information (DCI) including a field from a base station, and receive a physical downlink shared channel (PDSCH) from the base station based on the FRA field.
  • DCI downlink control information
  • PDSCH physical downlink shared channel
  • the size of the FRA field and the resource block-related index indicated by the FRA field may be defined based on the number of PDSCHs simultaneously transmitted to the terminal.
  • one or more instructions executable by one or more processors may include a frequency resource allocation (Frequency Resource Allocation) by the terminal.
  • FRA receives downlink control information (DCI) including a field from a base station, and receives a physical downlink shared channel (PDSCH) from the base station based on the FRA field.
  • DCI downlink control information
  • PDSCH physical downlink shared channel
  • the size of the FRA field and the resource block-related index indicated by the FRA field may be defined based on the number of PDSCHs simultaneously transmitted to the terminal.
  • some of the bits for defining the RA field in DCI are configured as reserved bits, thereby increasing the probability of successful decoding of the PDCCH.
  • a plurality of TRPs and a low-latency and high-reliability communication system can be implemented.
  • FIG. 3 is a diagram showing an AI system to which the method proposed in this specification can be applied.
  • FIG. 5 shows an example of the overall system structure of the NR to which the method proposed in this specification can be applied.
  • FIG. 7 shows an example of a frame structure in an NR system.
  • FIG 9 shows examples of a resource grid for each antenna port and neurology to which the method proposed in this specification can be applied.
  • FIG. 10 shows an example of a self-contained structure to which the method proposed in the present specification can be applied.
  • FIG. 11 shows an example of a downlink transmission/reception operation.
  • FIG. 13 shows an example in which different CORESETs are set for different beams in a single TRP.
  • 16 shows an example in which frequency resource regions used for data transmission in different TRPs are completely overlapped.
  • FIG 17 shows an example in which frequency resource regions used for data transmission in different TRPs are partially overlapped.
  • 19 is a diagram for explaining a method of configuring a FRA field in DCI in the case of the existing Type 0.
  • 20 is a view for explaining an example of a method of configuring a FRA field in DCI proposed in this specification.
  • 21 is a diagram for explaining another example of a method of configuring a FRA field in DCI proposed in this specification.
  • 22 is a diagram illustrating a method of setting differential bandwidth allocation between different TRPs.
  • 26 is a flowchart illustrating an operation method of a terminal proposed in the present specification.
  • FIG. 27 is a flowchart illustrating an operation method of a base station proposed in the present specification.
  • 29 illustrates a wireless device that can be applied to the present invention.
  • FIG. 30 shows another example of a wireless device applied to the present invention.
  • 31 illustrates a portable device applied to the present invention.
  • the'terminal (Terminal)' may be fixed or mobile, UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS ( It can be replaced with terms such as Advanced Mobile Station (WT), Wireless terminal (WT), Machine-Type Communication (MTC) device, Machine-to-Machine (M2M) device, and Device-to-Device (D2D) device.
  • WT Advanced Mobile Station
  • WT Wireless terminal
  • MTC Machine-Type Communication
  • M2M Machine-to-Machine
  • D2D Device-to-Device
  • downlink means communication from a base station to a terminal
  • uplink means communication from a terminal to a base station.
  • the transmitter may be part of the base station, and the receiver may be part of the terminal.
  • the transmitter may be part of the terminal, and the receiver may be part of the base station.
  • 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
  • NOMA non-orthogonal multiple access
  • CDMA may be implemented by radio technology such as universal terrestrial radio access (UTRA) or CDMA2000.
  • TDMA may be implemented with radio technologies such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for GSM evolution (EDGE).
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • EDGE enhanced data rates for GSM evolution
  • OFDMA may be implemented with wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and evolved UTRA (E-UTRA).
  • the three main requirements areas of 5G are: (1) Enhanced Mobile Broadband (eMBB) area, (2) Massive Machine Type Communication (mMTC) area, and (3) Super-reliability and It includes the area of ultra-reliable and low latency communications (URLLC).
  • eMBB Enhanced Mobile Broadband
  • mMTC Massive Machine Type Communication
  • URLLC ultra-reliable and low latency communications
  • eMBB goes far beyond basic mobile Internet access, and covers media and entertainment applications in rich interactive work, cloud or augmented reality.
  • Data is one of the key drivers of 5G, and it may not be possible to see dedicated voice services for the first time in the 5G era.
  • voice is expected to be handled as an application program simply using the data connection provided by the communication system.
  • the main causes for increased traffic volume are increased content size and increased number of applications requiring high data rates.
  • Streaming services (audio and video), interactive video and mobile internet connections will become more widely used as more devices connect to the internet. Many of these applications require always-on connectivity to push real-time information and notifications to users.
  • Cloud storage and applications are rapidly increasing in mobile communication platforms, which can be applied to both work and entertainment.
  • one of the most anticipated 5G use cases relates to the ability to seamlessly connect embedded sensors in all fields, namely mMTC. It is predicted that by 2020, there are 20 billion potential IoT devices.
  • Industrial IoT is one of the areas where 5G plays a key role in enabling smart cities, asset tracking, smart utilities, agriculture and security infrastructure.
  • URLLC includes new services that will transform the industry through ultra-reliable/low-latency links, such as remote control of the main infrastructure and self-driving vehicles. Reliability and level of delay are essential for smart grid control, industrial automation, robotics, drone control and coordination.
  • 5G can complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS) as a means to provide streams rated at hundreds of megabits per second to gigabit per second. This fast speed is required to deliver TV in 4K (6K, 8K and above) resolutions as well as virtual and augmented reality.
  • Virtual Reality (VR) and Augmented Reality (AR) applications include almost immersive sports events. Certain application programs may require special network settings. For VR games, for example, game companies may need to integrate the core server with the network operator's edge network server to minimize latency.
  • Automotive is expected to be an important new driver for 5G, along with many use cases for mobile communications to vehicles. For example, entertainment for passengers requires simultaneous high capacity and high mobility mobile broadband. The reason is that future users continue to expect high quality connections regardless of their location and speed.
  • Another example of application in the automotive field is the augmented reality dashboard. It identifies objects in the dark over what the driver sees through the front window and superimposes information that tells the driver about the distance and movement of the object.
  • wireless modules will enable communication between vehicles, exchange of information between the vehicle and the supporting infrastructure, and exchange of information between the vehicle and other connected devices (eg, devices carried by pedestrians).
  • the safety system guides alternative courses of action to help the driver drive more safely, reducing the risk of accidents.
  • the next step will be remote control or a self-driven vehicle.
  • This is very reliable and requires very fast communication between different self-driving vehicles and between the vehicle and the infrastructure.
  • self-driving vehicles will perform all driving activities, and drivers will focus only on traffic beyond which the vehicle itself cannot identify.
  • the technical requirements of self-driving vehicles require ultra-low delays and ultra-high-speed reliability to increase traffic safety to levels beyond human reach.
  • Smart cities and smart homes will be embedded in high-density wireless sensor networks.
  • the distributed network of intelligent sensors will identify the conditions for cost and energy-efficient maintenance of a city or home. Similar settings can be made for each assumption.
  • Temperature sensors, window and heating controllers, burglar alarms and consumer electronics are all connected wirelessly. Many of these sensors are typically low data rates, low power and low cost. However, for example, real-time HD video may be required in certain types of devices for surveillance.
  • the smart grid interconnects these sensors using digital information and communication technologies to collect information and act accordingly. This information can include supplier and consumer behavior, so smart grids can improve efficiency, reliability, economics, production sustainability and the distribution of fuels like electricity in an automated way.
  • the smart grid can be viewed as another sensor network with low latency.
  • Wireless and mobile communications are becoming increasingly important in industrial applications. Wiring is expensive to install and maintain. Thus, the possibility of replacing cables with wireless links that can be reconfigured is an attractive opportunity in many industries. However, achieving this requires that the wireless connection operate with cable-like delay, reliability and capacity, and that management be simplified. Low latency and very low error probability are new requirements that need to be connected to 5G.
  • Logistics and freight tracking are important use cases for mobile communications that enable the tracking of inventory and packages from anywhere using location-based information systems.
  • Logistics and cargo tracking use cases typically require low data rates, but require wide range and reliable location information.
  • Machine learning refers to the field of studying the methodology to define and solve various problems in the field of artificial intelligence. do.
  • Machine learning is defined as an algorithm that improves the performance of a job through constant experience.
  • An artificial neural network is a model used in machine learning, and may mean an overall model having a problem-solving ability, composed of artificial neurons (nodes) forming a network through a combination of synapses.
  • An artificial neural network may be defined by a connection pattern between neurons in different layers, a learning process for updating model parameters, and an activation function that generates output values.
  • the artificial neural network may include an input layer, an output layer, and optionally one or more hidden layers. Each layer contains one or more neurons, and the artificial neural network can include neurons and synapses connecting neurons. In an artificial neural network, each neuron may output a function value of an input function input through a synapse, a weight, and an active function for bias.
  • the model parameter means a parameter determined through learning, and includes weights of synaptic connections and bias of neurons.
  • the hyperparameter means a parameter that must be set before learning in the machine learning algorithm, and includes learning rate, number of iterations, mini-batch size, initialization function, and the like.
  • the purpose of learning an artificial neural network can be seen as determining model parameters that minimize the loss function.
  • the loss function can be used as an index to determine an optimal model parameter in the learning process of an artificial neural network.
  • Machine learning can be classified into supervised learning, unsupervised learning, and reinforcement learning according to the learning method.
  • Supervised learning refers to a method of training an artificial neural network while a label for training data is given, and a label is a correct answer (or a result value) that the artificial neural network must infer when the training data is input to the artificial neural network.
  • Unsupervised learning may refer to a method of training an artificial neural network without a label for learning data.
  • Reinforcement learning may mean a learning method in which an agent defined in a certain environment is trained to select an action or a sequence of actions to maximize cumulative reward in each state.
  • Machine learning which is implemented as a deep neural network (DNN) that includes a plurality of hidden layers among artificial neural networks, is also referred to as deep learning (deep learning), and deep learning is a part of machine learning.
  • DNN deep neural network
  • machine learning is used to mean deep learning.
  • a robot can mean a machine that automatically handles or acts on tasks given by its own capabilities.
  • a robot having a function of recognizing the environment and determining an operation by itself can be referred to as an intelligent robot.
  • Robots can be classified into industrial, medical, household, military, etc. according to the purpose or field of use.
  • the robot may be provided with a driving unit including an actuator or a motor to perform various physical operations such as moving a robot joint.
  • a driving unit including an actuator or a motor to perform various physical operations such as moving a robot joint.
  • the movable robot includes a wheel, a brake, a propeller, and the like in the driving unit, so that it can travel on the ground or fly in the air through the driving unit.
  • Autonomous driving refers to a technology that drives itself, and autonomous driving refers to a vehicle that operates without user interaction or with minimal user interaction.
  • a technology that maintains a driving lane a technology that automatically adjusts speed such as adaptive cruise control, a technology that automatically drives along a predetermined route, and a technology that automatically sets a route when a destination is set, etc. All of this can be included.
  • the vehicle includes a vehicle having only an internal combustion engine, a hybrid vehicle having both an internal combustion engine and an electric motor, and an electric vehicle having only an electric motor, and may include a train, a motorcycle, etc. as well as a vehicle.
  • the autonomous vehicle can be viewed as a robot having an autonomous driving function.
  • Augmented reality refers to virtual reality (VR), augmented reality (AR), and mixed reality (MR).
  • VR technology provides objects or backgrounds in the real world only as CG images
  • AR technology provides CG images made virtually on real objects
  • MR technology is a computer that mixes and combines virtual objects in the real world. It is a graphics technology.
  • MR technology is similar to AR technology in that it shows both real and virtual objects.
  • a virtual object is used as a complement to a real object, whereas in MR technology, there is a difference in that a virtual object and a real object are used with equal characteristics.
  • HMD Head-Mount Display
  • HUD Head-Up Display
  • mobile phone tablet PC, laptop, desktop, TV, digital signage, etc. It can be called.
  • FIG 1 shows an AI device 100 according to an embodiment of the present invention.
  • the AI device 100 is a TV, projector, mobile phone, smartphone, desktop computer, laptop, digital broadcasting terminal, personal digital assistants (PDA), portable multimedia player (PMP), navigation, tablet PC, wearable device, set-top box (STB) ), DMB receivers, radios, washing machines, refrigerators, desktop computers, digital signage, robots, vehicles, and the like.
  • PDA personal digital assistants
  • PMP portable multimedia player
  • STB set-top box
  • DMB receivers radios, washing machines, refrigerators, desktop computers, digital signage, robots, vehicles, and the like.
  • the communication unit 110 may transmit and receive data to and from external devices such as other AI devices 100a to 100e or the AI server 200 using wired/wireless communication technology.
  • the communication unit 110 may transmit and receive sensor information, a user input, a learning model, a control signal, etc. with external devices.
  • the communication technology used by the communication unit 110 includes Global System for Mobile Communication (GSM), Code Division Multi Access (CDMA), Long Term Evolution (LTE), 5G, Wireless LAN (WLAN), Wireless-Fidelity (Wi-Fi). ), BluetoothTM, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), ZigBee, Near Field Communication (NFC), and the like.
  • GSM Global System for Mobile Communication
  • CDMA Code Division Multi Access
  • LTE Long Term Evolution
  • 5G Fifth Generation
  • WLAN Wireless LAN
  • Wi-Fi Wireless-Fidelity
  • BluetoothTM BluetoothTM
  • Radio Frequency Identification (RFID) Radio Frequency Identification
  • IrDA Infrared Data Association
  • ZigBee ZigBee
  • NFC Near Field Communication
  • the input unit 120 may acquire various types of data.
  • the input unit 120 may include a camera for inputting a video signal, a microphone for receiving an audio signal, a user input unit for receiving information from a user, and the like.
  • the camera or microphone is treated as a sensor, and the signal obtained from the camera or microphone may be referred to as sensing data or sensor information.
  • the learning processor 130 may train a model composed of artificial neural networks using the training data.
  • the learned artificial neural network may be referred to as a learning model.
  • the learning model can be used to infer a result value for new input data rather than learning data, and the inferred value can be used as a basis for judgment to perform an operation.
  • the learning processor 130 may perform AI processing together with the learning processor 240 of the AI server 200.
  • the learning processor 130 may include a memory integrated or implemented in the AI device 100.
  • the learning processor 130 may be implemented using a memory 170, an external memory directly coupled to the AI device 100, or a memory maintained in the external device.
  • the sensors included in the sensing unit 140 include a proximity sensor, an illuminance sensor, an acceleration sensor, a magnetic sensor, a gyro sensor, an inertial sensor, an RGB sensor, an IR sensor, a fingerprint recognition sensor, an ultrasonic sensor, an optical sensor, a microphone, and a lidar. , Radar and more.
  • the output unit 150 may generate output related to vision, hearing, or touch.
  • the output unit 150 may include a display unit for outputting visual information, a speaker for outputting auditory information, a haptic module for outputting tactile information, and the like.
  • the memory 170 may store data supporting various functions of the AI device 100.
  • the memory 170 may store input data acquired from the input unit 120, learning data, a learning model, and learning history.
  • the processor 180 may determine at least one executable action of the AI device 100 based on information determined or generated using a data analysis algorithm or a machine learning algorithm. In addition, the processor 180 may control components of the AI device 100 to perform a determined operation.
  • the processor 180 may request, search, receive, or utilize data of the learning processor 130 or the memory 170, and perform an operation that is predicted or determined to be desirable among the at least one executable operation. It is possible to control the components of the AI device 100 to execute.
  • the processor 180 may generate a control signal for controlling the corresponding external device, and transmit the generated control signal to the corresponding external device when it is necessary to link the external device to perform the determined operation.
  • the processor 180 may acquire intention information for a user input, and determine a user's requirement based on the obtained intention information.
  • the processor 180 uses at least one of a Speech To Text (STT) engine for converting voice input into a string or a Natural Language Processing (NLP) engine for acquiring intention information of natural language, and a user Intent information corresponding to an input may be obtained.
  • STT Speech To Text
  • NLP Natural Language Processing
  • At this time, at least one of the STT engine or the NLP engine may be configured as an artificial neural network at least partially learned according to a machine learning algorithm. And, at least one or more of the STT engine or the NLP engine is learned by the learning processor 130, learned by the learning processor 240 of the AI server 200, or learned by distributed processing thereof May be
  • the processor 180 collects historical information including the operation content of the AI device 100 or a user's feedback on the operation, and stores it in the memory 170 or the running processor 130, or the AI server 200 or the like. Can be sent to external devices.
  • the collected history information can be used to update the learning model.
  • the processor 180 may control at least some of the components of the AI device 100 to drive an application program stored in the memory 170. Furthermore, the processor 180 may operate by combining two or more of the components included in the AI device 100 with each other to drive the application program.
  • the AI server 200 may include a communication unit 210, a memory 230, a running processor 240 and a processor 260.
  • the communication unit 210 may transmit and receive data with an external device such as the AI device 100.
  • the processor 260 may infer the result value for the new input data using the learning model, and generate a response or control command based on the inferred result value.
  • the cloud network 10 may form a part of the cloud computing infrastructure or may mean a network existing in the cloud computing infrastructure.
  • the cloud network 10 may be configured using a 3G network, a 4G or a Long Term Evolution (LTE) network or a 5G network.
  • LTE Long Term Evolution
  • the AI server 200 may include at least one of robots 100a, autonomous vehicles 100b, XR devices 100c, smart phones 100d, or home appliances 100e, which are AI devices constituting the AI system 1. It is connected through the cloud network 10 and can assist at least some of the AI processing of the connected AI devices 100a to 100e.
  • the AI server 200 receives input data from the AI devices 100a to 100e, infers a result value to the received input data using a learning model, and issues a response or control command based on the inferred result value. It can be generated and transmitted to AI devices 100a to 100e.
  • the AI devices 100a to 100e to which the above-described technology is applied will be described.
  • the AI devices 100a to 100e illustrated in FIG. 3 may be viewed as specific embodiments of the AI device 100 illustrated in FIG. 1.
  • AI technology is applied to the robot 100a, and may be implemented as a guide robot, a transport robot, a cleaning robot, a wearable robot, an entertainment robot, a pet robot, and an unmanned flying robot.
  • the robot 100a acquires status information of the robot 100a using sensor information obtained from various types of sensors, detects (recognizes) surrounding objects and objects, generates map data, or moves and travels. You can decide on a plan, determine a response to user interaction, or decide an action.
  • the robot 100a may use sensor information acquired from at least one sensor among a lidar, a radar, and a camera in order to determine a movement route and a driving plan.
  • the robot 100a may perform the above operations using a learning model composed of at least one artificial neural network.
  • the robot 100a may recognize a surrounding environment and an object using a learning model, and may determine an operation using the recognized surrounding environment information or object information.
  • the learning model may be directly learned from the robot 100a, or may be learned from an external device such as the AI server 200.
  • the robot 100a may perform an operation by generating a result using a direct learning model, but transmits sensor information to an external device such as the AI server 200 and receives the result generated accordingly. You may.
  • the map data may include object identification information for various objects arranged in a space in which the robot 100a moves.
  • the map data may include object identification information for fixed objects such as walls and doors and movable objects such as flower pots and desks.
  • the object identification information may include a name, type, distance, and location.
  • the autonomous vehicle 100b acquires status information of the autonomous vehicle 100b using sensor information obtained from various types of sensors, detects (recognizes) surrounding objects and objects, generates map data,
  • the route and driving plan may be determined, or an operation may be determined.
  • the autonomous driving vehicle 100b may receive sensor information from external devices or recognize an environment or an object for an area where a field of view is obscured or a predetermined distance or more, or receive information recognized directly from external devices. .
  • the autonomous vehicle 100b may perform the above operations using a learning model composed of at least one artificial neural network.
  • the autonomous vehicle 100b may recognize a surrounding environment and an object using a learning model, and may determine a driving line using the recognized surrounding environment information or object information.
  • the learning model may be learned directly from the autonomous vehicle 100b or may be learned from an external device such as the AI server 200.
  • the autonomous vehicle 100b may perform an operation by generating a result using a direct learning model, but transmits sensor information to an external device such as the AI server 200 and receives the generated result accordingly. You can also do
  • the autonomous vehicle 100b determines a moving path and a driving plan using at least one of map data, object information detected from sensor information, or object information obtained from an external device, and controls the driving unit to determine the moving path and driving According to the plan, the autonomous vehicle 100b may be driven.
  • AI technology is applied to the XR device 100c, HMD (Head-Mount Display), HUD (Head-Up Display) provided in a vehicle, television, mobile phone, smart phone, computer, wearable device, home appliance, digital signage , It can be implemented as a vehicle, a fixed robot or a mobile robot.
  • HMD Head-Mount Display
  • HUD Head-Up Display
  • the XR device 100c generates location data and attribute data for 3D points by analyzing 3D point cloud data or image data acquired through various sensors or from an external device, thereby providing information about surrounding space or real objects.
  • the XR object to be acquired and output can be rendered and output.
  • the XR device 100c may output an XR object including additional information about the recognized object in correspondence with the recognized object.
  • the XR device 100c may perform the above operations using a learning model composed of at least one artificial neural network.
  • the XR device 100c may recognize a real object from 3D point cloud data or image data using a learning model, and provide information corresponding to the recognized real object.
  • the learning model may be learned directly from the XR device 100c or may be learned from an external device such as the AI server 200.
  • the XR device 100c may perform an operation by generating a result using a direct learning model, but transmits sensor information to an external device such as the AI server 200 and receives the generated result accordingly. You can also do
  • the robot 100a is applied with AI technology and autonomous driving technology, and can be implemented as a guide robot, a transport robot, a cleaning robot, a wearable robot, an entertainment robot, a pet robot, and an unmanned flying robot.
  • the robot 100a to which AI technology and autonomous driving technology are applied may mean a robot itself having an autonomous driving function or a robot 100a that interacts with the autonomous driving vehicle 100b.
  • the robot 100a having an autonomous driving function may move itself according to a given moving line without user control, or collectively refer to moving devices by determining the moving line itself.
  • the robot 100a and the autonomous vehicle 100b having an autonomous driving function may use a common sensing method to determine one or more of a moving path or a driving plan.
  • the robot 100a and the autonomous vehicle 100b having an autonomous driving function may determine one or more of a moving route or a driving plan using information sensed through a lidar, a radar, and a camera.
  • the robot 100a that interacts with the autonomous vehicle 100b exists separately from the autonomous vehicle 100b, and is connected to an autonomous vehicle function inside or outside the autonomous vehicle 100b, or the autonomous vehicle 100b ) Can perform the operation associated with the user on board.
  • the robot 100a interacting with the autonomous vehicle 100b acquires sensor information on behalf of the autonomous vehicle 100b and provides it to the autonomous vehicle 100b, acquires sensor information, and obtains environment information or By generating object information and providing it to the autonomous vehicle 100b, it is possible to control or assist the autonomous vehicle driving function of the autonomous vehicle 100b.
  • the robot 100a interacting with the autonomous vehicle 100b may monitor a user on the autonomous vehicle 100b or control a function of the autonomous vehicle 100b through interaction with the user. .
  • the robot 100a may activate the autonomous driving function of the autonomous vehicle 100b or assist control of the driving unit of the autonomous vehicle 100b.
  • the function of the autonomous driving vehicle 100b controlled by the robot 100a may include not only an autonomous driving function, but also a function provided by a navigation system or an audio system provided inside the autonomous driving vehicle 100b.
  • the robot 100a interacting with the autonomous vehicle 100b may provide information or assist a function to the autonomous vehicle 100b from outside the autonomous vehicle 100b.
  • the robot 100a may provide traffic information including signal information to the autonomous vehicle 100b, such as a smart traffic light, or interact with the autonomous vehicle 100b, such as an automatic electric charger for an electric vehicle.
  • An electric charger can also be automatically connected to the charging port.
  • the robot 100a is applied with AI technology and XR technology, and can be implemented as a guide robot, a transport robot, a cleaning robot, a wearable robot, an entertainment robot, a pet robot, an unmanned flying robot, and a drone.
  • the robot 100a to which XR technology is applied may mean a robot that is a target of control/interaction within an XR image.
  • the robot 100a is separated from the XR device 100c and can be interlocked with each other.
  • the robot 100a which is the object of control/interaction within an XR image, acquires sensor information from sensors including a camera
  • the robot 100a or the XR device 100c generates an XR image based on the sensor information.
  • the XR device 100c may output the generated XR image.
  • the robot 100a may operate based on a control signal input through the XR device 100c or a user's interaction.
  • the user can check the XR image corresponding to the viewpoint of the robot 100a remotely linked through an external device such as the XR device 100c, and adjust the autonomous driving path of the robot 100a through interaction or , You can control the operation or driving, or check the information of the surrounding objects.
  • the autonomous vehicle 100b may be implemented with a mobile robot, a vehicle, or an unmanned aerial vehicle by applying AI technology and XR technology.
  • the autonomous driving vehicle 100b to which the XR technology is applied may mean an autonomous driving vehicle having a means for providing an XR image or an autonomous driving vehicle that is a target of control/interaction within an XR image.
  • the autonomous vehicle 100b which is the object of control/interaction within the XR image, is distinguished from the XR device 100c and can be interlocked with each other.
  • the autonomous vehicle 100b having a means for providing an XR image may acquire sensor information from sensors including a camera and output an XR image generated based on the acquired sensor information.
  • the autonomous vehicle 100b may provide an XR object corresponding to a real object or an object on the screen to the occupant by outputting an XR image with a HUD.
  • the XR object when the XR object is output to the HUD, at least a portion of the XR object may be output so as to overlap with an actual object facing the occupant's gaze.
  • the XR object when the XR object is output to a display provided inside the autonomous vehicle 100b, at least a part of the XR object may be output to overlap with an object in the screen.
  • the autonomous vehicle 100b may output XR objects corresponding to objects such as lanes, other vehicles, traffic lights, traffic signs, two-wheeled vehicles, pedestrians, buildings, and the like.
  • the autonomous vehicle 100b which is the object of control/interaction within the XR image, acquires sensor information from sensors including the camera, the autonomous vehicle 100b or the XR device 100c is based on the sensor information.
  • the XR image is generated, and the XR device 100c may output the generated XR image.
  • the autonomous vehicle 100b may operate based on a user's interaction or a control signal input through an external device such as the XR device 100c.
  • a terminal receives information through a downlink (DL) from a base station, and the terminal transmits information through an uplink (UL) to the base station.
  • the information transmitted and received by the base station and the terminal includes data and various control information, and various physical channels exist according to the type/use of the information they transmit and receive.
  • the UE After completing the initial cell search, the UE acquires more detailed system information by receiving a physical downlink control channel (PDCCH) and a physical downlink control channel (PDSCH) according to the information carried on the PDCCH. It can be done (S202).
  • a physical downlink control channel (PDCCH)
  • a physical downlink control channel (PDSCH)
  • S202 the UE acquires more detailed system information by receiving a physical downlink control channel (PDCCH) and a physical downlink control channel (PDSCH) according to the information carried on the PDCCH. It can be done (S202).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink control channel
  • the UE may perform a random access procedure (RACH) to the base station (steps S203 to S206).
  • RACH random access procedure
  • the UE may transmit a specific sequence as a preamble through a physical random access channel (PRACH) (S203 and S205), and receive a response message for the preamble through the PDCCH and the corresponding PDSCH ( S204 and S206).
  • PRACH physical random access channel
  • an additional contention resolution procedure may be performed.
  • the UE that has performed the above-described procedure is a general uplink/downlink signal transmission procedure and then receives PDCCH/PDSCH (S207) and physical uplink shared channel (PUSCH)/physical uplink control channel (Physical Uplink). Control Channel (PUCCH) transmission (S208) may be performed.
  • the terminal receives downlink control information (DCI) through the PDCCH.
  • DCI downlink control information
  • the DCI includes control information such as resource allocation information for the terminal, and formats are different depending on the purpose of use.
  • control information that the UE transmits to the base station through the uplink or that the UE receives from the base station includes a downlink/uplink ACK/NACK signal, a channel quality indicator (CQI), a precoding matrix index (PMI), and a rank indicator (RI). ) And the like.
  • the UE may transmit the control information such as CQI/PMI/RI described above through PUSCH and/or PUCCH.
  • a design of a communication system considering a Machine Type Communication (MTC) that provides a service by connecting a plurality of devices and objects is being discussed.
  • MTC Machine Type Communication
  • URLLC Ultra-Reliable and Low Latency Communication
  • the eLTE eNB is an evolution of the eNB that supports connectivity to EPC and NGC.
  • gNB A node that supports NR as well as a connection with NGC.
  • New RAN A radio access network that supports NR or E-UTRA or interacts with NGC.
  • Network function is a logical node within a network infrastructure with well-defined external interfaces and well-defined functional behavior.
  • NG-U User plane interface used for NG3 reference point between new RAN and NGC.
  • Non-standalone NR Deployment configuration where gNB requires LTE eNB as an anchor for control plane connection to EPC or eLTE eNB as an anchor for control plane connection to NGC.
  • Non-standalone E-UTRA Deployment configuration where eLTE eNB requires gNB as an anchor for control plane connection to NGC.
  • User plane gateway The endpoint of the NG-U interface.
  • FIG. 5 shows an example of the overall system structure of the NR to which the method proposed in this specification can be applied.
  • the NG-RAN consists of NG-RA user planes (new AS sublayer/PDCP/RLC/MAC/PHY) and gNBs that provide control plane (RRC) protocol termination for UE (User Equipment). do.
  • NG-RA user planes new AS sublayer/PDCP/RLC/MAC/PHY
  • RRC control plane
  • the gNB is also connected to the NGC through the NG interface.
  • the gNB is connected to an Access and Mobility Management Function (AMF) through an N2 interface and a User Plane Function (UPF) through an N3 interface.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • NR supports multiple numerology (or subcarrier spacing (SCS)) to support various 5G services. For example, if the SCS is 15 kHz, it supports a wide area in traditional cellular bands, and if the SCS is 30 kHz/60 kHz, it is dense-urban, lower latency. And a wider carrier bandwidth, and when the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz is supported to overcome phase noise.
  • numerology or subcarrier spacing (SCS)
  • various frame structures according to a plurality of pneumatics may be supported.
  • OFDM orthogonal frequency division multiplexing
  • Downlink (uplink) and uplink (uplink) transmission is It consists of a radio frame (radio frame) having a section of.
  • each radio frame is It is composed of 10 subframes (subframes) having an interval of. In this case, there may be one set of frames for uplink and one set of frames for downlink.
  • New Merology For, slots are within a subframe Numbered in increasing order, within the radio frame It is numbered in increasing order.
  • Table 3 shows the number of OFDM symbols per slot in a normal CP ( ), the number of slots per radio frame ( ), Number of slots per subframe ( Table 4 shows the number of OFDM symbols per slot, the number of slots per radio frame, and the number of slots per subframe in the extended CP.
  • FIG. 7 shows an example of a frame structure in an NR system. 7 is for convenience of description only and does not limit the scope of the present invention.
  • a mini-slot may consist of 2, 4 or 7 symbols, or more or fewer symbols.
  • an antenna port a resource grid, a resource element, a resource block, a carrier part, etc. Can be considered.
  • the resource grid is on the frequency domain It is configured by subcarriers, one subframe is composed of 14 ⁇ 2 ⁇ OFDM symbols as an example, but is not limited thereto.
  • the transmitted signal is One or more resource grids consisting of subcarriers and It is described by the OFDM symbols of. From here, to be. remind Denotes a maximum transmission bandwidth, which may vary between uplink and downlink as well as numerology.
  • FIG 9 shows examples of a resource grid for each antenna port and neurology to which the method proposed in this specification can be applied.
  • each element of the resource grid for the antenna port p is referred to as a resource element, an index pair It is uniquely identified by. From here, Is an index on the frequency domain, Denotes the location of the symbol in the subframe. When referring to a resource element in a slot, an index pair Is used. From here, to be.
  • New Merology And resource elements for antenna port p Is the complex value Corresponds to If there is no risk of confusion, or if a particular antenna port or numerology is not specified, the indices p and Can be dropped, resulting in a complex value or Can be
  • a physical resource block (physical resource block) on the frequency domain It is defined as consecutive subcarriers.
  • Point A serves as a common reference point of the resource block grid and can be obtained as follows.
  • -OffsetToPointA for PCell downlink indicates the frequency offset between the lowest sub-carrier and point A of the lowest resource block overlapping the SS/PBCH block used by the UE for initial cell selection, 15 kHz subcarrier spacing for FR1 and Expressed in resource block units assuming a 60 kHz subcarrier spacing for FR2;
  • Subcarrier spacing setting The center of subcarrier 0 of the common resource block 0 for'point A'coincides with'point A'.
  • Common resource block number in frequency domain And subcarrier spacing settings The resource element for (k,l) may be given as in Equation 1 below.
  • the It can be defined relative to point A to correspond to the subcarrier centered on point A.
  • Physical resource blocks start from 0 within a bandwidth part (BWP). Numbered up to, Is the number of the BWP. Physical resource block in BWP i And common resource blocks The relationship between can be given by Equation 2 below.
  • the time division duplexing (TDD) structure considered in the NR system is a structure that processes both uplink (UL) and downlink (DL) in one slot (or subframe). This is for minimizing latency of data transmission in a TDD system, and the structure may be referred to as a self-contained structure or a self-contained slot.
  • one transmission unit eg, slot, subframe
  • OFDM Orthogonal Frequency Division Multiplexing
  • region 1002 refers to a downlink control region
  • region 1004 refers to an uplink control region.
  • areas other than areas 1002 and 1004 ie, areas without separate indication may be used for transmission of downlink data or uplink data.
  • uplink control information and downlink control information may be transmitted in one self-contained slot.
  • uplink data or downlink data may be transmitted in one self-contained slot.
  • downlink transmission and uplink transmission are sequentially performed, and transmission of downlink data and reception of uplink ACK/NACK may be performed.
  • a process for a base station (eNodeB, eNB, gNB) and/or terminal (terminal, UE (User Equipment)) to switch from a transmission mode to a reception mode a time gap is required for the process of switching from the receiving mode to the transmitting mode.
  • some OFDM symbol(s) may be set as a guard period (GP).
  • FIG. 11 shows an example of a downlink transmission/reception operation.
  • the base station schedules downlink transmission such as frequency/time resource, transport layer, downlink precoder, MCS, etc. (S1401).
  • the base station may determine the beam for PDSCH transmission to the terminal through the above-described operations.
  • the terminal receives downlink control information (DCI) for downlink scheduling (that is, including scheduling information of the PDSCH) from the base station on the PDCCH (S1402).
  • DCI downlink control information
  • DCI format 1_0 or 1_1 may be used for downlink scheduling, and particularly, DCI format 1_1 includes the following information: DCI format identifier (DCI formats), bandwidth part indicator (Bandwidth part indicator), frequency domain Frequency domain resource assignment, time domain resource assignment, PRB bundling size indicator, rate matching indicator, ZP CSI-RS trigger (ZP CSI-RS trigger), antenna port(s) (Antenna port(s)), transmission configuration indication (TCI), SRS request, SRS request, DMRS (Demodulation Reference Signal) sequence initialization (DMRS sequence initialization)
  • DCI format identifier DCI formats
  • bandwidth part indicator Bandwidth part indicator
  • frequency domain Frequency domain resource assignment time domain resource assignment
  • PRB bundling size indicator rate matching indicator
  • ZP CSI-RS trigger ZP CSI-RS trigger
  • antenna port(s) (Antenna port(s)
  • TCI transmission configuration indication
  • SRS request SRS request
  • the number of DMRS ports can be scheduled, and also transmits single-user (SU)/multi-user (MU) Scheduling is possible.
  • the TCI field is composed of 3 bits, and QCL for DMRS is dynamically indicated by indicating up to 8 TCI states according to the TCI field value.
  • the terminal receives downlink data from the base station on the PDSCH (S1403).
  • the PDSCH is decoded according to the indication by the corresponding DCI.
  • the UE may set the DMRS configuration type by the upper layer parameter'dmrs-Type', and the DMRS type is used to receive the PDSCH.
  • the UE may set the maximum number of DMRA symbols that are front-loaded for the PDSCH by the upper layer parameter'maxLength'.
  • DMRS configuration type 1 when a single codeword is scheduled by the terminal and an antenna port mapped with an index of ⁇ 2, 9, 10, 11 or 30 ⁇ is specified, or when the terminal is scheduled by two codewords, the terminal Assumes that all remaining orthogonal antenna ports are not associated with PDSCH transmission to another terminal.
  • the precoding granularity P' is a continuous resource block in the frequency domain.
  • P' may correspond to one of ⁇ 2, 4, broadband ⁇ .
  • the UE does not expect to be scheduled with non-contiguous PRBs, and the UE can assume that the same precoding is applied to the allocated resource.
  • the Precoding Resource Block Group (PRG) is divided into P'consecutive PRBs.
  • the number of actual consecutive PRBs in each PRG may be one or more.
  • the UE may assume that the same precoding is applied to consecutive downlink PRBs in the PRG.
  • the UE In order for the UE to determine the modulation order, target code rate, and transport block size in the PDSCH, the UE first reads the 5-bit MCD field in DCI, modulation order and target code Determine the rate. Then, the redundancy version field in DCI is read, and a redundancy version is determined. Then, the terminal determines the transport block size using the number of layers and the total number of allocated PRBs before rate matching.
  • the UE When the UE is set to SCG, the UE may have to apply a procedure described in a predefined standard (eg, 3GPP TS 38.213) for both MCG and SCG except for PDCCH monitoring in the Type0/0A/2-PDCCH CSS set. have.
  • the terminal does not need to apply a procedure according to a predefined standard (eg, 3GPP TS 38.213) for the SCG.
  • the terms'secondary cell','secondary cells','serving cell' and'serving cells' in this section are secondary cells and secondary cells belonging to MCG, respectively.
  • Serving cell serving cells.
  • the terms'secondary cell','secondary cells','serving cell', and'serving cells' in this section are secondary cells and secondary cells belonging to the SCG, respectively (excluding PSCell).
  • Serving cell serving cells.
  • the term'primary cell' may mean the PSCell of the SCG.
  • the UE When the UE means that monitoring decodes each PDCCH candidate according to the monitored DCI format, the UE sets the PDCCH candidate set in one or more CORESETs on the active DL BWP on each activated serving cell set to PDCCH monitoring according to the corresponding search space set. Can be monitored.
  • the UE For PDCCH candidate monitoring in a slot, when the UE receives ssb-PositionsInBurst in SIB1 and does not receive ssb-PositionsInBurst in ServingCellConfigCommon for the serving cell, and the UE does not monitor PDCCH candidates in the Type0-PDCCH CSS set and is in the PDCCH candidate If at least one RE for the overlaps with at least one RE corresponding to the SS/PBCH block index provided by ssb-PositionsInBurst of SIB1, the UE may not need to monitor the PDCCH candidate.
  • the UE when the UE receives ssb-PositionsInBurst from ServingCellConfigCommon for the serving cell, and the UE does not monitor the PDCCH candidate in the Type0-PDCCH CSS set, and at least one RE for the PDCCH candidate is ssb-PositionsInBurst of the ServingCellConfigCommon When overlapping with at least one RE corresponding to the provided SS/PBCH block index, the UE may not need to monitor the PDCCH candidate.
  • the UE may not need to monitor the PDCCH candidate.
  • pdcch-BlindDetectionCA May be the set number of downlink cells. If not, May be a value of pdcch-BlindDetectionCA.
  • the terminal When the terminal is configured for NR-DC operation, the terminal For the MCG provided by pdcch-BlindDetectionMCG Determine the ability to monitor the maximum number of PDCCH candidates per slot corresponding to downlink cells, For the SCG provided by pdcch-BlindDetectionSCG The ability to monitor the maximum number of PDCCH candidates per slot corresponding to downlink cells can be determined.
  • the UE When the UE is configured for carrier aggregation operation across four or more cells or when the UE is configured for NR-DC operation, when configured for a cell group, the UE It may not be expected to monitor the number of PDCCH candidates greater than the maximum number derived from the corresponding value of per slot.
  • the terminal is shot in both MCG and SCG
  • the UE can expect to provide values satisfying the following to pdcch-BlindDetectionMCG and pdcch-BlindDetectionSCG.
  • the UE may indicate maximum values for each of pdcch-BlindDetectionMCG and pdcch-BlindDetectionSCG through pdcch-BlindDetectionMCG-UE and pdcch-BlindDetectionSCG-UE.
  • the terminal reports pdcch-BlindDetectionCA,
  • the value range of -pdcch-BlindDetectionMCG-UE or pdcch-BlindDetectionSCG-UE is [1, ..., pdcch-BlindDetectionCA-1],
  • the value range of -pdcch-BlindDetectionMCG-UE or pdcch-BlindDetectionSCG-UE is [1, 2, 3],
  • the PDCCH candidate set to be monitored by the UE may be defined as a PDCCH search space set.
  • the search space set can be a CSS set or a USS set.
  • the UE may monitor the PDCCH candidate in one or more of the following sets of search spaces.
  • Type0-PDCCH CSS set set by searchSpaceZero in PDCCH-ConfigCommon for DCI format with CRC scrambled by pdcch-ConfigSIB1 in MIB or by searchSpaceSIB1 in PDCCH-ConfigCommon or by SI-RNTI in the primary cell of MCG ,
  • the terminal may not monitor the PDCCH candidate for Type0-PDCCH CSS set on DL BWP.
  • the Type0-PDCCH CSS set may be defined by the CCE aggregation level given in Table 5 and the number of PDCCH candidates per CCE aggregation level.
  • the Type0-PDCCH CSS set can have a search space set index 0.
  • the terminal may not monitor the PDCCH for the Type0A-PDCCH CSS set in the DL BWP.
  • the number of PDCCH candidates per CCE aggregation level for the CCE aggregation level and Type0A-PDCCH CSS set may be given in Table 5.
  • the terminal may be provided with a setting for a search space by ra-SearchSpace. If the UE does not provide a Type3-PDCCH CSS set or USS set and the UE receives C-RNTI, the UE receives DCI format 0_0 and DCI format 1_0 with CRC scrambled by C-RNTI in the Type1-PDCCH CSS set. PDCCH candidates can be monitored.
  • the terminal may not monitor the PDCCH for the Type2-PDCCH CSS set on the DL BWP.
  • Table 5 shows the number of PDCCH candidates per CCE aggregation level for the CCE aggregation level and the Type2-PDCCH CSS set.
  • the UE When the UE monitors a PDCCH candidate for a DCI format having a CRC scrambled by C-RNTI and provides a UE with a non-zero value for the SearchSpaceID of PDCCH-ConfigCommon for the Type0/0A/2-PDCCH CSS set, the UE May determine a monitoring opportunity for PDCCH candidates of the Type0/0A/2-PDCCH CSS set based on the search space set associated with the value of searchSpaceID.
  • DM-RS for monitoring PDCCH in Type1-PDCCH CSS set DM for monitoring PDCCH in Type0/0A/2/3-PDCCH CSS set or USS set, for single cell operation or carrier aggregation operation in the same frequency band -If it does not have the same QCL-TypeD characteristics as RS, the UE does not expect to monitor the PDCCH in the Type0/0A/2/3-PDCCH CSS set or USS set, and the PDCCH or related PDSCH is in the PDCCH and at least one symbol. When overlapping, the UE may monitor in the Type1-PDCCH CSS set or with the associated PDSCH.
  • the terminal When receiving RNTI, INT-RNTI, TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, or TPC-SRS-RNTI, for one RNTI of this RNTI, the terminal has one CRC scrambled with RNTI per slot It may not be expected to process information from the above DCI format.
  • Table 5 shows the CCE aggregation level and the maximum number of PDCCH candidates per CCE aggregation level for the CSS set set by searchSpace-SIB1.
  • monitoringSymbolsWithinSlot instructs the UE to monitor the PDCCH in a subset of up to three consecutive symbols that are the same in all slots, the UE PDCCH other than 15 kHz if the subset includes at least one symbol after the third symbol It may not be expected to be set to SCS.
  • the UE may not expect that the first symbol and a plurality of consecutive symbols for CORESET such that PDCCH candidates are mapped to symbols in different slots will be provided.
  • the terminal may not expect two PDCCH monitoring opportunities for the same set of search spaces or different set of search spaces on the active DL BWP in the same CORESET separated by the number of non-zero symbols smaller than the duration of the CORESET.
  • the UE may determine a PDCCH monitoring opportunity on the active DL BWP from the PDCCH monitoring period in the slot, the PDCCH monitoring offset, and the PDCCH monitoring pattern. For search space set s, If is, the terminal number Number in the frame having It may be determined that the PDCCH monitoring opportunity(s) is present in the slot having. Terminal slots Slots starting from Monitor PDCCH candidates for search space set s for PDCCH candidates may not be monitored for the search space set s for consecutive slots.
  • the USS of CCE may be defined by a set of PDCCH candidates for CCE aggregation level L.
  • the UE When the UE is set to monitor PDCCH candidates with a carrier indicator field corresponding to the secondary cell in another serving cell, the UE may not be known to monitor the PDCCH candidate in the active DL BWP of the secondary cell. For an active DL BWP of a serving cell in which the UE monitors PDCCH candidates, the UE can monitor the PDCCH candidate for at least the same serving cell.
  • the UE may expect to monitor PDCCH candidates for DCI formats of up to 4 sizes including up to 3 DCI formats with CRC scrambled by C-RNTI per serving cell.
  • the UE may count a number of sizes for a DCI format per serving cell based on a plurality of configured PDCCH candidates in each search space set for a corresponding active DL BWP.
  • Table 6 shows the SCS configuration for a single serving cell Number of PDCCH candidates monitored per slot for DL BWP with Indicates.
  • CCEs for the PDCCH candidate may not overlap.
  • Table 7 shows the SCS configuration for a single serving cell Maximum number of non-overlapping CCEs per slot for DL BWP with Indicates.
  • Terminal set up SCS Having DL BWPs with When configured as downlink cells (here, ), the terminal for each scheduled (scheduled) cell on the active (active) DL BWP of the scheduling (scheduling) cell More than PDCCH candidates or per slot You may not need to monitor more than non-overlapping CCEs.
  • DL BWP of an activated cell is an active DL BWP of an activated cell
  • DL BWP of a deactivated cell is a DL BWP having an index provided by firstActiveDownlinkBWP-Id for an inactivated cell.
  • the terminal For each scheduled cell, the terminal sets the SCS of the scheduling cell On active DL BWP with More than PDCCH candidates or per slot You may not need to monitor more than non-overlapping CCEs.
  • the UE may not expect to be configured CSS sets ranging from the monitored PDCCH candidates exceeding the maximum number per slot and the corresponding total number per scheduled cell of non-overlapping CCEs per slot.
  • the UE can monitor the number of PDCCH candidates and the number of corresponding non-overlapping CCEs per slot on the secondary cell on the secondary cell per slot. You may not expect to be larger than that number.
  • the number of PDCCH candidates for monitoring and the number of non-overlapping CCEs per slot may be counted separately for each scheduled cell.
  • CSS set The number of PDCCH candidates counted during monitoring for ( ), USS set The number of PDCCH candidates counted during monitoring for ( ).
  • the terminal totals in the slot Needing two non-overlapping CCEs PDCCH candidates can be monitored.
  • Search space set The set of non-overlapping CCEs for Denoted by The cardinality of Can be represented as Here, search space set Non-overlapping CCEs for PDCCH candidates for assigned monitoring for CSS sets and all search space sets ( It may be determined by considering PDCCH candidates for monitoring allocated for.
  • the UE For a scheduled cell, the UE is in DCI formats 1_0 or 1_1 with CRC scrambled by C-RNTI, CS-RNTI, or MCS-RNTI scheduling 16 PDSCH receptions that the UE has not received any corresponding PDSCH symbol.
  • the UE may discard all information in the DCI format (discard).
  • the UE configured as a bandwidth part indicator in DCI format 0_1 or format 1_1 is a new active DL BWP as described in a predefined standard (for example, 3GPP TS 38.213) in case of active DL BWP or active UL BWP change.
  • a predefined standard for example, 3GPP TS 38.213
  • DCI information applicable to each of the UL BWPs may be determined.
  • PDCCH is transmitted in SRS within time in serving cell c2 (uplink or downlink RF returning)
  • the UE may not expect to monitor the PDCCH in the serving cell c1.
  • the terminal symbols of slots that cannot use PDSCH reception as described in a predefined standard (for example, 3GPP TS 38.214) In the RB set can be determined. If a PDCCH candidate in a slot is mapped to one or more REs overlapping REs of a certain RB in the RB set in symbols of the slot, the UE may not expect to monitor the PDCCH candidate.
  • a predefined standard for example, 3GPP TS 38.214
  • Table 8 shows an example of a ControlResourceSet IE (information element).
  • ControlResourceSet IE is used to set a time/frequency control resource set (CORESET) for detecting downlink control information.
  • Table 9 shows an example of TCI-State IE.
  • the TCI-State IE associates one or two DL reference signals with a corresponding quasi-colocation (QCL) type.
  • QCL quasi-colocation
  • Table 10 shows an example of SearchSpace IE.
  • SearchSpace IE defines how and where to detect PDCCH candidates. Each search space is associated with one ControlResourceSet. In the case of cross-carrier scheduling, for the scheduled cell, all optional fields except nrofCandidates are not present.
  • the physical downlink control channel consists of one or more control channel elements (CCEs) shown in Table 11.
  • CCEs control channel elements
  • Control-resource set (CORESET)
  • the control resource set is provided in the frequency domain, provided by the upper layer parameter frequencyDomainResources of the ControlResourceSet IE.
  • the upper layer parameter dmrs-TypeA-Position It can be composed of symbols.
  • the upper layer parameter dmrs-TypeA-Position is 3, This can be supported.
  • a control channel element may be composed of six resource element groups (REGs) identical to one resource block during one OFDM symbol.
  • the resource element groups in the control resource set are numbered in a chronological order starting with 0 for the first OFDM symbol, and numbered from the next lowest numbered resource block.
  • the UE may be configured with multiple sets of control resources. Each set of control resources can be associated with only one CCE-to-REG mapping.
  • the CCE-to-REG mapping for the control resource set is set with the upper layer parameter cce-REG-MappingType of the ControlResourceSet IE, which can be interleaved or non-interleaved, and can be described by the REG bundle.
  • REG bundles are REGs Can be defined as Where L is the REG bundle size, , And The number of REGs in the control resource set.
  • CCE j REG bundles It can be composed of. here, Is an interleaver.
  • L may be set by a higher layer parameter reg-BundleSize.
  • the interleaver is defined by Equation 3 below.
  • the UE may not expect to deal with a setting giving a quantity C that is not an integer.
  • the UE For both interleaved and non-interleaved mapping, the UE,
  • the same precoding in the REG bundle is used, and if the upper layer parameter precoderGranularity is the same as allContiguousRB, the same precode is used across all resource element groups in the continuous resource block set of CORESET.
  • UE Beat You may need to assume a block of here, Is the number of bits transmitted on the physical channel, scrambled before modulation, and consequently scrambled bits You can create a block of
  • the scrambling sequence Can be given by a predefined standard (eg 3GPP TS 38.214, 5.2.1).
  • the scrambling sequence generator May need to be initialized with
  • the UE-specific search space defined in the predefined standard (3GPP TS 38.213, 10) is set, Is the same as the upper layer parameter pdcch-DMRS-ScramblingID. If not, to be.
  • Two downlink resource allocation schemes, type 0 and type 1, can be supported.
  • the UE may assume that downlink resource allocation type 1 is used when a scheduling grant is received in DCI format 1_0.
  • the UE defines the downlink resource as defined by the DCI field. You may need to use allocation type 0 or type 1. Otherwise, the UE may have to use the downlink frequency resource allocation type defined by the upper layer parameter resourceAllocation.
  • the RB number may start from the lowest RB of the CORESET that received the DCI. Otherwise, RB numbering may start from the lowest RB in the determined downlink bandwidth part.
  • the resource block allocation information is a bitmap indicating a resource block group (RBG) allocated to a scheduled UE in which the RBG is a set of consecutive virtual resource blocks defined by a higher layer parameter rbg-Size. It may include, RBG may be set by the size of the carrier bandwidth part defined in PDSCH-Config and Table 12.
  • Total RBG for downlink bandwidth part i ( Number of) Can be provided by
  • P may mean a nominal RBG size.
  • the bitmap is a size bit with one bitmap bit per RBG so that each RBG is addressable.
  • RBGs should be indexed in order of increasing frequency and starting at the lowest frequency of the carrier bandwidth part.
  • the order of the RBG bitmaps May be a sequence that is mapped from MSB to LSB. If the corresponding bit value in the bitmap is 1, the RBG is assigned to the UE, otherwise, the RBG may not be assigned to the UE.
  • the resource block allocation information is sized, except when DCI format 1_0 is decoded.
  • the set of non-interleaved or interleaved virtual resource blocks consecutively allocated within the active bandwidth part of the PRB may be displayed on the scheduled UE.
  • a common search space of size CORESET 0 can be used.
  • the downlink type 1 resource allocation field is a starting virtual resource block ( ) Corresponding to the resource indication value (RIV) and the length of the resource block allocated consecutively It can be composed of.
  • the resource indication value can be defined as follows.
  • Resource indication values can be defined by:
  • -Bandwidth part indicator The number of DL BWPs set as upper layers except for the initial DL bandwidth part 0, 1 or 2 bits depending on.
  • the bit width of this field It is decided by bit.
  • bandwidth part indicator is the same as the upper layer parameter BWP-Id, And, if not, a bandwidth part indicator is defined, . If the UE does not support active BWP change through DCI, the UE ignores this bit field.
  • Resource allocation types 0 and 1 are both set beat.
  • the MSB bit is used to indicate resource allocation type 0 or resource allocation type 1.
  • bit value 0 indicates resource allocation type 0
  • bit value 1 indicates resource allocation type 1.
  • For resource allocation type 1 LSB provides resource allocation.
  • bandwidth part indicator indicates a bandwidth part other than the active bandwidth part, and resource allocation types 0 and 1 are set for the indicated bandwidth part, .
  • the UE assumes resource allocation type 0 for the bandwidth portion where the bit width is indicated in the following case.
  • the "frequency domain resource allocation" field of the active bandwidth portion is smaller than the bit width of the "frequency domain resource allocation” field of the displayed bandwidth portion.
  • -ZP CSI-RS trigger-0, 1 or 2 bits of [6, TS 38.214].
  • the bit width of this field Determined in bits, where the number of ZP CSI-RS resource sets in the upper layer parameter zp-CSI-RS-Resource.
  • bandwidth part indicator indicates a bandwidth part other than the active bandwidth part and the value of maxNrofCodeWordsScheduledByDCI for the displayed bandwidth part is 2 and the value of maxNrofCodeWordsScheduledByDCI for the active bandwidth part is 1, it is assumed that the UE is filled with 0 when interpreting.
  • "Modulation and coding scheme”, “New data indicator” and “Redundant version” fields of transport block 2 are "UE", “Modulation and coding scheme”, "New data indicator of transport block 2 for the indicated bandwidth part” and " Duplicate version” field.
  • the upper layer parameter pdsch-HARQ-ACK-Codebook dynamic, 4 bits, where 2 MSB bits are counter DAI and 2 LSB bits are total DAI.
  • -PDSCH-to-HARQ_feedback timing indicator-0, 1, 2 or 3 bits The bit width of this field is determined in bits, where I is the number of entries of the upper layer parameter dl-DataToUL-ACK.
  • the antenna port may have to be determined according to the order of the DMRS ports.
  • the bit width of this field is Where Is the "antenna port” bit width derived according to dmrs-DownlinkForPDSCH-MappingTypeA. Is the "Antenna port” bit width derived according to dmrs-DownlinkForPDSCH-MappingTypeB. If the mapping type of PDSCH corresponds to a smaller value of and Zero is filled.
  • the UE assumes that tci-PresentInDCI is not activated for the indicated bandwidth part.
  • -SRS request-2 bits defined for the UE not configured for SUL in the cell; 3 bits for the UE where the first bit is a non-SUL/SUL indicator and the second and third bits have configured SUL in the cell.
  • This bit field may also indicate CSI-RS.
  • CBGTI CBG transport information
  • CBGFI CBG flushing information
  • n is a slot with a scheduling DCI
  • K_0 is based on numerology of PDSCH, and subcarrier interval settings for PDSCH and PDCCH, respectively.
  • the PDSCH mapping type is set to type A or type B.
  • the UE should consider the combination of S and L defined in Table 13 as a valid PDSCH allocation.
  • the same symbol allocation is applied to the aggregationFactorDL consecutive slot.
  • the UE can expect that the TB is repeated within the symbol allocation of each of the AggregationFactorDL consecutive slots and the PDSCH is limited to a single transport layer.
  • the duplicate version to be applied at the n th transmission time of TB is determined according to Table 14. Table 14 applies when AggregationFactorDL>1.
  • the UE procedure for determining a slot configuration determines a symbol of a slot allocated to a PDSCH as an uplink symbol, transmission in that slot is omitted for multi-slot PDSCH transmission.
  • the UE is not expected to receive the PDSCH with mapping type A in the slot.
  • the UE If the first symbol of the PDCCH scheduling the PDSCH is received in a symbol subsequent to the first symbol indicated in the PDSCH time domain resource allocation, the UE is not expected to receive the PDSCH with mapping type B in the slot.
  • Table 15 defines the PDSCH time domain resource allocation configuration to be applied.
  • the basic PDSCH time domain allocations A, B or C according to Table 16, Table 17, Table 18 and Table 19 apply.
  • pdsch-TimeDomainAllocationList which is composed of upper layers in pdsch-ConfigCommon or pdsch-Config, is applied.
  • Table 16 is a table for Default PDSCH time domain resource allocation A for general CP.
  • Table 17 is a table for Default PDSCH time domain resource allocation A for extended CP.
  • Table 18 is a table for Default PDSCH time domain resource allocation B.
  • Table 19 is a table for Default PDSCH time domain resource allocation C.
  • MIMO enhancements need to be considered in relation to next-generation wireless communication systems.
  • the following may be considered in relation to COMP (Coordinated Multiple Point) transmission.
  • TRP Transmission Reception Point
  • NCJT is a transmission scheme in which transmission of MIMO layer(s) is performed from two or more transmission terminals (TPs) without adaptive precoding through transmission point (TP)(s). ), which is described in a predefined standard (e.g. 3GPP TR 36.741).
  • the TRP has the same meaning as a transmitting/receiving end (TRxP), a transmission point (TP), etc., and a predefined standard (ETSI TR 138 913) has one or more antenna elements available in a network at a specific geographic location in a specific region. It is described as an antenna array with antenna elements.
  • a multiple TRP situation connected to NIBH it has a disadvantage that dynamic coordination between TRPs is difficult due to BH latency (eg, 2 ms, 5 ms, 50 ms). Therefore, in multiple TRP situations connected by NIBH, it may be preferable to independently schedule resources in different TRP to support NCJT. And to support this, a plurality of PDCCH schemes for transmitting a physical downlink control channel (PDCCH) in each TRP may be used.
  • PDCH physical downlink control channel
  • the multiple PDCCH schemes mean a scheme of scheduling different physical downlink shared channels (PDSCHs) by transmitting independent PDCCHs to different terminals in different TRPs. 12 shows an example of supporting multiple TRP transmissions through multiple PDCCHs.
  • PDSCHs physical downlink shared channels
  • the UE may perform blind decoding (BD) for the PDCCH based on a control resource set (CORESET) setting and a search space setting set by the base station in the UE.
  • CORESET control resource set
  • BD blind decoding
  • up to three different CORESET settings are possible per BWP (Bandwidth Part), and TCI (Transmission Configuration Indication) state can be set separately for each CORESET setting.
  • FIG. 13 shows an example in which different CORESETs are set for different beams in a single TRP.
  • the example of FIG. 13 shows that the TCI state setting of different CORESET includes different channel state information (CSI)-reference signal (RS) resources, and different CSI-RS resources correspond to different beams. .
  • CSI channel state information
  • RS reference signal
  • the TCI state setting value of CORESET #1 may include CSI-RS resource #10, and the corresponding CSI-RS resource #10 may mean a specific transmission beam of TRP.
  • the TCI state setting value of CORESET #2 may include CSI-RS resource #11, and the corresponding CSI-RS resource #11 may mean a transmission beam different from CSI-RS resource #10.
  • the TCI state setting value of CORESET #2 includes CSI-RS resource #21 transmitted from TRP 2.
  • TRP 1 cannot set a CORESET for CSI-RS resource #10, and cannot transmit a PDCCH in a corresponding beam. Therefore, the PDCCH transmission coverage of TRP 1 is reduced.
  • the TCI state of a specific CORESET can be changed through MAC CE operation, but additional signaling is required for this, and a delay occurs until the corresponding TCI state change is applied.
  • This specification proposes a method capable of supporting multiple TRP transmissions based on multiple PDCCHs without reducing the number of CORESETs for different beams that can be set in a single TRP and/or the number of CORESETs for different purposes. do.
  • the frequency resource allocation method is fully overlapping, partially overlapping, and non-overlapping (depending on the degree of overlap of frequency resource regions used for data transmission in different TRPs). non-overlapping).
  • the number of layers transmitted by each TRP in order not to exceed the terminal's capability. For example, when the total number of layers that the terminal can simultaneously receive is 4 due to the capability of the terminal, the total number of layers simultaneously transmitted from different TRPs to the terminal should not exceed 4. If different TRPs are in an environment where dynamic information exchange is difficult due to non-ideal BH, etc., the number of layers to be transmitted in each TRP is fixed in a semi-static manner so as not to exceed the terminal's capability. I can do it. However, in this case, even if the number of layers that can be actually transmitted is large due to the fixed number of layers, it may not be able to use them all. Therefore, this method can reduce the efficiency of resource utilization.
  • the partial overlapping scheme refers to a case in which the frequency resource regions used for data transmission in different TRPs partially overlap. 17 shows an example of partial overlap.
  • bands transmitting data in different TRP may be different. Therefore, regions that overlap with each other and regions that do not overlap may exist together.
  • the CSI feedback procedure for interference measurement is complicated.
  • the feedback overhead increases as channel information to be considered in CSI feedback increases.
  • the complexity of the terminal for calculating the increased channel information also increases.
  • the complexity of the terminal for calculating different amounts of interference according to the frequency band increases.
  • the number of layers transmitted by each TRP should be limited.
  • the same PDSCH mapping type and the same symbol interval must be set.
  • each TRP power boosting of a transmission signal is possible in each TRP.
  • a transmission power of a resource that is not used by overlapping with a resource used by another TRP can be used to increase the transmission power of a resource actually transmitted. That is, power boosting is possible for the transmitted data signal.
  • the non-overlapping method when the non-overlapping method is applied, it is possible to improve the reception SINR of the terminal and to increase the degree of freedom of scheduling in different TRP. Therefore, the non-overlapping method may be useful in an environment in which dynamic information exchange between different TRPs is difficult due to non-ideal BH.
  • FAA frequency resource allocation
  • the DCI bit for the FRA field of the DCI scheduling the PDSCH from each TRP to the UE is saved or defined in the past.
  • a method of utilizing the bit that has been used for a different purpose than before may be considered.
  • This specification proposes an efficient signaling scheme for frequency and/or time resource allocation and UE behaviors for the application of multiple PDCCH-based multiple TRP transmission schemes.
  • this specification explicitly or implicitly indicates that the base station instructs the UE to apply a new definition scheme to the FRA field in DCI, or a method of instructing different interpretation of the existing FRA field (hereinafter, proposal 1). ), and, as indicated above, a method for constructing a FRA field in DCI (hereinafter, proposal 2), and, explicitly or implicitly, the base station applies a new definition method to the TRA field in DCI to the UE. Or a method for instructing to interpret differently for an existing TRA field, and a method for constructing a TRA field in DCI (hereinafter, proposal 3), when indicated.
  • slots, subframes, frames, etc. referred to in the proposals described herein may correspond to specific examples of time units used in a wireless communication system. Can. That is, in applying the methods proposed in the present specification, a time unit or the like may be replaced with other time units applied in another wireless communication system.
  • the base station explicitly or implicitly instructs the UE to apply a new definition scheme to a frequency resource allocation (FRA) field in downlink control information (DCI), or to an existing FRA field. Look at how to tell them to interpret differently.
  • FAA frequency resource allocation
  • DCI downlink control information
  • the base station may instruct the UE to explicitly or implicitly apply a new definition scheme to the FRA field in DCI or to interpret the FRA field differently.
  • Type 0 There are two types of definition: Type 0 and Type 1.
  • the FRA is defined as follows.
  • a resource block group (RBG) having a specific size is defined for each BWP (Bandwidth part) set for the terminal.
  • the total number of RBGs is defined for each BWP, and bits corresponding to the total number of RBGs are defined in the DCI field.
  • Each bit corresponds to a specific RBG defined in the BWP, and may indicate whether the corresponding RBG is actually scheduled through the corresponding bit.
  • Type 1 can schedule a continuous virtual resource block (VRB). To this end, the total number of consecutive RBs used for scheduling and the VRB index at which scheduling starts may be indicated to the UE through a resource indication value (RIV) value.
  • RIV resource indication value
  • the FRA field in DCI is defined to be determined according to the size of the BWP.
  • the base station may explicitly set the operation of the proposal to the UE through higher layer signaling and/or DCI signaling.
  • a parameter for instructing the operation of the proposal method may be included, and the operation of the proposal may be set to the terminal through the corresponding parameter.
  • the base station sets the operation of the proposal to the UE through specific parameters included in the CORESET and/or search space setting, the UE interprets DCI according to the proposed method for the PDCCH detected in the corresponding CORESET and/or search space can do.
  • the TCI state of a specific CORESET setting may include a plurality of RS sets, and the base station may designate a specific RS set among the plurality of RS sets included in the TCI state of the CORESET setting to the UE through a specific search space setting.
  • an operation of the proposal may be set through a corresponding search space setting.
  • the terminal may interpret DCI according to the above proposed method for the PDCCH detected in the corresponding search space.
  • an implicit method for performing the proposal when it can be assumed that the UE is a plurality of TRP transmissions, it can be defined between the base station and the UE to operate according to the proposal. For this implicit method, it should be possible to recognize that the terminal is a plurality of TRP transmissions using signaling for other purposes and perform the above proposed method.
  • a TCI state of a specific CORESET setting may include a plurality of RS sets
  • a base station may include a plurality of RS sets in a TCI state of a CORESET setting to a terminal through a specific search space setting.
  • a plurality of RS sets may be designated to the terminal through a specific search space setting.
  • multiple RS sets it may mean that PDCCHs can be transmitted from different TRPs, and it may mean that multiple TRP transmissions are indirectly.
  • the terminal can assume that the multiple TRP transmissions, and the base station and the base station to interpret the PDCCH detected in the search space according to the proposal. It can be defined between terminals.
  • the above example is one of methods for assuming that the terminal is a plurality of TRP transmissions. Therefore, the method that can assume that multiple TRP transmissions may not be limited to the above method.
  • a separate Radio Network Temporary Identifier may be used to indirectly inform the UE that multiple TRP transmissions are made. Or, it may be defined to include multiple CORESET settings in one search space, and may be defined to be interpreted as a search space for scheduling multiple TRP transmissions for the search space settings.
  • RNTI Radio Network Temporary Identifier
  • ControlResourceSets with different values of CORESETPoolIndex set may be set to the terminal through PDCCH-Config.
  • CORESETPoolIndex it may mean that PDCCHs can be transmitted from different TRPs, and it may mean that multiple TRP transmissions are indirectly.
  • ControlResourceSets with different values of CORESETPoolIndex are set to the UE through PDCCH-Config, it can be assumed that the UE is a plurality of TRP transmissions, and according to the proposal for the PDCCH received from the corresponding CORESET It can be defined between the base station and the terminal to interpret.
  • a new definition method may be applied to an FRA field in DCI, or interpretation of an existing bit may be different.
  • This specification reduces the DCI overhead by saving the number of bits for defining the FRA field in DCI through such a scheme, or by defining a reserved bit that knows the value between the base station and the UE in DCI in advance. The probability of decoding success can be increased. Techniques and advantages for supporting the above method are described in detail in the proposal below.
  • a band capable of scheduling at a specific time point is divided between different TRPs.
  • each TRP can schedule resources to the UE only in a specific band in the BWP at a specific time.
  • information on a time resource region capable of performing multiple TRP transmissions eg, slots and/or frame indexes capable of performing multiple TRP transmissions
  • the corresponding information is known to the terminal and can assist the terminal in the process of receiving the PDCCH.
  • the number of bits of the FRA field can be differently interpreted while maintaining the existing number of bits. For example, by interpreting specific bit(s) in the FRA field as reserved bit(s) to increase the probability of successful decoding of the PDCCH, or to use the specific bit(s) in the FRA field to indicate other things ( Field).
  • the terminal in order to apply such a method, the terminal must first analyze the TRA field and then the time resource region indicated by the corresponding TRA field must match the time resource region capable of performing multiple TRP transmissions that the base station has informed the terminal. .
  • a time resource region capable of performing multiple TRP transmissions between the different TRPs may correspond to specific search space setting information.
  • the base station instructs the UE to apply a new definition scheme for the FRA (Frequency Resource Allocation) field in the DCI or instructs to interpret differently for the existing FRA field, it can be applied to configure the FRA field in the DCI Let's look at how.
  • FRA Frequency Resource Allocation
  • N/K may be replaced with round(N/K), floor(N/K), and/or ceil(N/K) to include the case where N/K is not an integer.
  • the above method is equally applicable to proposal 2-2.
  • total number of PDSCHs simultaneously transmitted may be interpreted as the total number of PDSCHs that can overlap in a time domain among different PDSCHs scheduled for a UE in a specific slot. This may also be interpreted as the number of TRP, panel, and/or beams capable of performing simultaneous transmission in multiple TRP, panel, and/or beam transmission environments. At this time, the corresponding value may be set by the base station through an explicit or implicit method to the terminal.
  • the TCI state of a specific CORESET setting may include multiple RS sets, and the base station may set a specific RS set among the multiple RS sets included in the TCI state of the CORESET setting to the UE through a specific search space setting. Can be specified. At this time, a plurality of RS sets may be designated to the UE through a specific search space setting. In this case, different PDCCHs detected in the search space may schedule PDSCHs overlapping each other in the time domain. Therefore, the total number of RS sets specified in the search space setting can correspond to the total number of PDSCHs simultaneously transmitted.
  • the above method is equally applicable to proposal 2-2.
  • the total number of PDSCHs simultaneously transmitted may be the number of different CORESETPoolIndex values that may or may not be set to the UE.
  • the above method is equally applicable to proposal 2-2.
  • the "PDSCH index" can be set by the base station through an explicit or implicit method to the terminal.
  • the base station may set the PDSCH index to the UE through higher layer signaling or DCI signaling.
  • the TCI state of a specific CORESET setting may include multiple RS sets, and the base station may set a specific RS set among the multiple RS sets included in the TCI state of the CORESET setting to the UE through a specific search space setting. Can be specified. At this time, a plurality of RS sets may be designated to the terminal through a specific search space setting. And/or, when multiple RS sets are designated, a resource region in which PDCCH can be transmitted for each RS set may be divided. In this case, the PDCCH that the UE has successfully decoded can correspond to a specific RS set through the resource region.
  • the PDSCH index may follow the CORESETPoolIndex set in the CORESET corresponding to the PDCCH that scheduled the corresponding PDSCH.
  • CORESETPoolIndex corresponds to 0 or 1
  • each PDSCH may be named PDSCH 0 or 1. This is equally applicable to proposal 2-2 and/or proposal 3.
  • the number of bits may be maintained at 10 bits according to an existing method, and interpretation of 10 bits may be performed as follows.
  • the most significant or least significant 5 bits may be interpreted according to the proposed method, and the other bits may be used as reserved bits having a promised value between the base station and the terminal.
  • the terminal can increase the probability of the decoding success of the PDCCH by using the information in decoding the PDCCH. This is because the LLR (Log Likelihood Ratio) value of a bit that is already known when decoding the PDCCH can be used. 21 shows an example of application of the present proposal.
  • FRA bits defined in PDCCH 1 and PDCCH 2 corresponding to TRP 1 and TRP 2 are respectively composed of 10 bits corresponding to the total RBG.
  • the most significant 5 bits may correspond to RBG0 to RBG4 and RBG5 to RBG9, respectively, according to the proposed method.
  • the remaining 5 bits may be defined as reserved bits having a promised value between the base station and the terminal.
  • the base station may set direct information corresponding to the size of a band through which each PDSCH can be transmitted to different PDSCHs to the UE. If the existing proposal is modified to reflect this method, it is as follows.
  • the FRA field in DCI of the p-th PDCCH that schedules the p-th PDSCH is Indicating RBGs It can consist of bits.
  • the RBG index indicated by the FRA field of the x-th PDCCH is r
  • the actual RGB index in the BWP corresponding to the RBG index is It can be like
  • the indexes of the PDSCH and the PDCCH can be calculated in the same way as the "PDSCH index" of this proposal.
  • the modified proposal has an advantage in that differential bandwidth can be allocated between different TRPs.
  • a large number of bands can be assigned to a specific terminal, and in the case of a TRP with a relatively large number of connected terminals, a small band can be assigned to a specific terminal. Therefore, it has the advantage of increasing the efficiency of resource utilization. 22 shows an example of the modified proposal.
  • Case 1 shows an example of a method of reducing a bit for defining a FRA field in DCI
  • Case 2 shows an example of a method of defining a reserved bit while maintaining the number of bits.
  • the total number of RBGs N_0 and N_1 in which PDSCH 1 and PDSCH 2 can be transmitted is set to 6 and 4, respectively.
  • the FRA field in DCI may define the number of bits based on W/K.
  • a resource indication value RIV
  • it can also be calculated based on W/K.
  • the starting VRB index indicated to the terminal through RIV is r'
  • the actual VRB index in the BWP corresponding to the corresponding VRB index is equal to r'+W/K* (PDSCH index).
  • the FRA field in DCI defines the number of bits based on W/K
  • the number of bits of the FRA field in DCI is expressed by Equation 4 below.
  • the number of bits of the FRA field in DCI may be defined as in Equation 5 below.
  • the downlink type 1 resource allocation field is a starting virtual resource block, ) And the length of consecutively allocated resource blocks ( ).
  • the resource indication value is defined as Equation 6 below.
  • RIV can be defined as in Equation 7 below.
  • FIG. 24 An example of applying the above proposed method is shown in FIG. 24. Assuming that the size of the BWP is 40 and the total number of PDSCHs simultaneously transmitted is 2, in the case of Type 1, a total of 8 bits are required for the FRA field in DCI, and the RIV according to the starting VRB index and the number of consecutive RBs An example of the value is shown in FIG. 24.
  • the starting VRB index represented by the RIV value indicated through the FRA bits defined in PDCCH 1 corresponding to TRP 1 can follow the "r'+W/K* (PDSCH index)" suggested above. have.
  • the PDSCH index is equal to 0
  • the starting VRB index indicated by RIV and the actual VRB index in the BWP are the same.
  • the FRA field in DCI may be composed of 10 bits in total.
  • the 8 bits of the highest or lowest level may be interpreted according to the proposed method, and the other bits may be used as reserved bits having a promised value between the base station and the terminal.
  • the terminal can increase the probability of the decoding success of the PDCCH by using the information in decoding the PDCCH. This is because the LLR value of a known bit can be used when decoding the PDCCH.
  • the proposed scheme can reduce the DCI overhead by saving the number of bits for defining the FRA field in DCI, and increase the probability of successful decoding of the PDCCH by configuring the reserved bits among the bits for defining the FRA field in DCI.
  • the FRA field in DCI The number of bits can be defined based on. Even when calculating RIV Can be calculated based on.
  • the starting VRB index indicated to the terminal through RIV is r'
  • the actual VRB index in the BWP corresponding to the corresponding VRB index is r'+ Same as
  • the indexes of the PDSCH and the PDCCH can be calculated in the same way as the "PDSCH index" of this proposal.
  • the number of bits of the FRA field in DCI is It can be defined as
  • the RIV can be defined as in Equation 8 below.
  • the modified proposal has an advantage in that differential bandwidth can be allocated between different TRPs.
  • a large number of bands can be assigned to a specific terminal, and in the case of a TRP with a relatively large number of connected terminals, a small band can be assigned to a specific terminal. Therefore, there is an advantage that can increase the efficiency of resource utilization.
  • the PDSCH index is defined in Proposal 2, Proposal 2-1, and/or Proposal 2-2 to find the actual VRB index scheduled to the UE based on the index.
  • an explicit 1 bit in DCI can be added for this purpose. That is, based on the DCI, the actual VRB index scheduled for the terminal can be found. For example, when the corresponding DCI 1 bit indicates 0, it can correspond to the case where the PDSCH index is 1 in the above proposal, and when the 1 is indicated, the PDSCH index is 2.
  • the base station instructs the UE to apply a new definition scheme to a time resource allocation (TRA) field in DCI, or a method for instructing the UE to interpret differently for an existing TRA field, and the base station to the UE
  • TRA time resource allocation
  • the base station may explicitly or implicitly instruct the UE to apply a new definition scheme to the TRA field in DCI or to interpret the existing TRA field differently. And/or, when the base station instructs the UE to apply a new definition scheme to the TRA field in DCI, or instructs to interpret the existing TRA field differently, the following scheme may be applied to configure the TRA field in DCI. Can.
  • the proposal 1, proposal 2, proposal 2-1, and/or proposal 2-2 assumed a situation in which PDSCHs transmitted by different TRPs do not overlap in the frequency domain. Meanwhile, a situation in which PDSCHs transmitted by different TRPs do not overlap in the time domain may be considered. 25 shows an example of a situation in which PDSCHs transmitted by different TRPs do not overlap in the time domain.
  • applying a new definition method to the TRA field means a different method from the existing definition method described in the current standard to be described later. Details of the new definition method are described below.
  • K0 may be referred to as a slot offset, and may mean a difference between a slot in which the PDCCH is transmitted and a slot in which the actual PDSCH is scheduled.
  • S is a starting OFDM symbol (symbol) index
  • L can mean the number of consecutive OFDM symbols through which the PDSCH is transmitted.
  • the set for the corresponding parameter combination may be set to the terminal through higher layer signaling, or a default set consisting of a predefined fixed combination between the base station and the terminal may be used.
  • the parameter combination applied to the actual PDSCH scheduling may be indicated to the UE through the TRA field in DCI.
  • a new definition method may be applied to the TRA field in DCI, or interpretation of an existing bit may be different.
  • This specification reduces the DCI overhead by saving the number of bits for defining the TRA field in DCI through this method, or by defining reserved bits that know a value between a base station and a terminal in DCI in advance, so that decoding of the PDCCH is successful. Increase the probability.
  • the base station instructs the UE to apply a new definition scheme to a time resource allocation (TRAI) field in DCI, or instructs to interpret differently for an existing TRA field, it promises in advance between the base station and the UE to indicate TRA Only parameter combinations included in a specific constraint condition among the combined parameter combinations may be indicated to the UE through the TRA field in DCI.
  • TRAI time resource allocation
  • Table 20 is a table for Default PDSCH time domain resource allocation A for a normal cyclic prefix (Cyclic Prefix).
  • Examples of “specific constraints" in the proposal include PDSCH mapping type, S and/or L, and the like.
  • the PDSCH mapping type may be restricted to a specific type among Type A or Type B.
  • the range of S which means the start symbol of the PDSCH, can be restricted.
  • the value of the specific constraint condition can be explicitly or implicitly set by the base station to the terminal.
  • an index of a PDSCH or a PDCCH can be defined.
  • the TCI state of a specific CORESET setting may include multiple RS sets, and the base station may configure a plurality of TCI states of the CORESET setting to the UE through a specific search space setting.
  • a plurality of RS sets may be designated to the terminal through a specific search space setting.
  • resource regions in which PDCCH can be transmitted for each RS set may be divided.
  • the PDCCH that the UE has successfully decoded can correspond to a specific RS set through the resource region.
  • the PDCCH index may correspond to the index of the RS set corresponding to the resource region that is successfully decoded.
  • the PDSCH index may correspond to the PDCCH index that scheduled the PDSCH.
  • the index of the PDCCH detected in the resource region corresponding to the first RS set is 1 (or 0)
  • the index of the PDSCH scheduled by the corresponding PDCCH can be 1 (or 0).
  • the index of the PDCCH detected in the resource region corresponding to the second RS set is 2 (or 1)
  • the index of the PDSCH scheduled by the corresponding PDCCH can be 2 (or 1).
  • the base station may set and/or indicate the PDSCH mapping type, S, and/or L values that can be transmitted for PDSCHs having different indexes to the UE through higher layer signaling and/or DCI signaling.
  • the base station may set that the UE can use only Type A and Type B for PDSCH 1 and PDSCH 2, respectively.
  • DCI fields for TRA indication in PDCCH 1 and PDCCH 2 may be simplified to Table 21 and/or Table 22, respectively, based on Table 20 as follows. Therefore, in this specification, 1 bit can be saved through the proposed method in preparation for 4 bits required for the DCI field for TRA indication.
  • the base station may predefine a PDSCH mapping type, S, and L values that can be transmitted for PDSCHs having different indexes. For example, the base station may prescribe that the UE will use only Type A and Type B for PDSCH 1 and PDSCH 2, respectively.
  • DCI fields for TRA indication in PDCCH 1 and PDCCH 2 may be simplified to Table 21 and/or Table 22, respectively. Therefore, in this specification, 1 bit can be saved through the proposed method in preparation for 4 bits required for the DCI field for TRA indication.
  • PDSCH mapping types can be defined for PDSCHs having different indexes. As shown in Table 20 for Type A, it can be seen that the S value is composed of a relatively low value. On the other hand, in the case of Type B, the S value is relatively high. In this case, Type A can be used by TRP using the OFDM symbol in the front of the slot, and Type B can be used by TRP using the OFDM symbol behind the slot. That is, as can be seen in the above example, the PDSCH scheduling region in the slot can be classified based on the PDSCH mapping type. Accordingly, scheduling schemes of different PDSCHs may be restricted based on the PDSCH mapping type.
  • the DCI overhead can be reduced by saving the number of bits for TRA field definition in DCI, and the probability of decoding success of the PDCCH is determined by configuring reserved bits among bits for TRA field definition in DCI. Can be increased.
  • scheduling may be performed assuming full overlap between different TRPs as follows. When connected to the ideal BH between different TRP, this operation can be performed smoothly.
  • the UE may not expect that FRA information scheduled by different PDCCHs is different.
  • FRA information is obtained using only one FRA field indicated by a specific PDCCH, and the FRA field of another PDCCH can be eliminated to reduce DCI overhead or used for other purposes or purposes.
  • 26 is a flowchart illustrating an operation method of a terminal proposed in the present specification.
  • the operation in which the terminal in step S2601 receives the DCI may be implemented by the apparatuses of FIGS. 28 to 31 to be described below.
  • the one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to receive DCI, and one or more RF units ( 1060) may receive the DCI.
  • the terminal may receive a PDSCH from the base station based on the FRA field (S2602).
  • the operation in which the terminal in step S2602 receives the PDSCH may be implemented by the apparatuses of FIGS. 28 to 31 to be described below.
  • the one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to receive PDSCH, and one or more RF units ( 1060) may receive the PDSCH.
  • the size of the FRA field and an index related to a resource block indicated by the FRA field may be defined based on the number of PDSCHs simultaneously transmitted to the terminal.
  • the terminal (1000/2000 in FIGS. 28 to 31) may receive analysis information on the FRA field from the base station.
  • the terminal may receive setting information including group information for control resource sets (CORESET) from the base station.
  • CORESET group information for control resource sets
  • the terminal may receive setting information including group information for control resource sets (CORESET) from the base station.
  • CORESET group information for control resource sets
  • one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to receive configuration information, and one or more RF units 1060 may receive setting information.
  • the UE may assume that the FRA fields are defined based on the number of PDSCHs simultaneously transmitted to the UE by the group information.
  • the number of PDSCHs simultaneously transmitted to the terminal may be the number of different groups of set control resource sets (CORES).
  • CORES set control resource sets
  • the number of PDSCHs that are simultaneously transmitted to the terminal may be the number of PDSCHs in which a time domain overlaps in a slot.
  • the PDSCHs transmitted simultaneously to the terminal may include PDSCHs transmitted from different transmission reception points (TRPs), panels, or beams.
  • TRPs transmission reception points
  • the above-described signaling and operation may be implemented by devices (eg, FIGS. 28 to 31) to be described below.
  • the above-described signaling and operation may be processed by one or more processors 1010 and 2020 of FIGS. 28 to 31, and the above-described signaling and operation may be performed by at least one processor of FIGS. 28 to 31 (for example: 1010, 2020 may be stored in memory (eg, 1040, 2040) in the form of an instruction/program (eg, instruction, executable code) for driving.
  • an instruction/program eg, instruction, executable code
  • the one or more processors receive, from the base station, downlink control information (DCI) including a frequency resource allocation (FRA) field by the device, and physically based on the FRA field.
  • DCI downlink control information
  • FRA frequency resource allocation
  • the downlink shared channel Physical Downlink Shared Channel, PDSCH
  • PDSCH Physical Downlink Shared Channel
  • the downlink shared channel is set to be received from the base station, the size of the FRA field and the resource block associated with the index indicated in the FRA field (Resource Block) related indexes of PDSCHs simultaneously transmitted to the terminal It can be defined based on the number.
  • CCM computer readable medium
  • the terminal receives downlink control information (DCI) including a frequency resource allocation (Frequency Resource Allocation, FRA) field from the base station, the The physical downlink shared channel (PDSCH) is received from the base station based on the FRA field, but the size of the FRA field and the resource block-related index indicated by the FRA field are transmitted to the terminal. It may be defined based on the number of PDSCHs transmitted at the same time.
  • DCI downlink control information
  • FRA Frequency Resource Allocation
  • FIG. 27 is a flowchart illustrating an operation method of a base station proposed in the present specification.
  • a base station (1000/2000 in FIGS. 28 to 31) uses downlink control information (DCI) including a frequency resource allocation (FRA) field. It can be transmitted to the terminal (S2701).
  • DCI downlink control information
  • FAA frequency resource allocation
  • the operation in which the base station in step S2701 transmits DCI may be implemented by the apparatuses of FIGS. 28 to 31 to be described below.
  • one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to transmit DCI, and one or more RF units ( 1060) may transmit the DCI.
  • the base station (1000/2000 in FIGS. 28 to 31) may transmit a PDSCH to the terminal based on the FRA field (S2702).
  • the operation in which the base station in step S2702 transmits the PDSCH may be implemented by the apparatuses of FIGS. 28 to 31 to be described below.
  • the one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to transmit a PDSCH, and one or more RF units ( 1060) may transmit the PDSCH.
  • the size of the FRA field and an index related to a resource block indicated by the FRA field may be defined based on the number of PDSCHs simultaneously transmitted to the terminal.
  • the base station (1000/2000 in FIGS. 28 to 31) may transmit analysis information on the FRA field to the terminal.
  • one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to transmit analysis information, and one or more RF units 1060 may transmit analysis information.
  • the base station (1000/2000 of FIGS. 28 to 31) may transmit configuration information including group information for control resource sets (CORESET) to the terminal.
  • CORESET control resource sets
  • one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to transmit configuration information, and one or more RF units 1060 may transmit setting information.
  • the base station (1000/2000 of FIGS. 28 to 31) may transmit configuration information including group information for control resource sets (CORESET) to the terminal.
  • CORESET control resource sets
  • one or more processors 1020 may control one or more memories 1040 and/or one or more RF units 1060 to transmit configuration information, and one or more RF units 1060 may transmit setting information.
  • the UE may assume that the FRA fields are defined based on the number of PDSCHs simultaneously transmitted to the UE by the group information.
  • the number of PDSCHs simultaneously transmitted to the terminal may be the number of different groups of set control resource sets (CORES).
  • CORES set control resource sets
  • the number of PDSCHs that are simultaneously transmitted to the terminal may be the number of PDSCHs in which a time domain overlaps in a slot.
  • the PDSCHs transmitted simultaneously to the terminal may include PDSCHs transmitted from different transmission reception points (TRPs), panels, or beams.
  • TRPs transmission reception points
  • DCI downlink control information
  • FRA frequency resource allocation
  • the downlink shared channel Physical Downlink Shared Channel, PDSCH
  • PDSCH Physical Downlink Shared Channel
  • CCM computer readable medium
  • the vehicle may include a vehicle equipped with a wireless communication function, an autonomous driving vehicle, a vehicle capable of performing inter-vehicle communication, and the like.
  • the vehicle may include a UAV (Unmanned Aerial Vehicle) (eg, a drone).
  • XR devices include Augmented Reality (AR)/Virtual Reality (VR)/Mixed Reality (MR) devices, Head-Mounted Device (HMD), Head-Up Display (HUD) provided in vehicles, televisions, smartphones, It may be implemented in the form of a computer, wearable device, home appliance, digital signage, vehicle, robot, or the like.
  • the mobile device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, smart glasses), a computer (eg, a notebook, etc.).
  • Household appliances may include a TV, a refrigerator, and a washing machine.
  • IoT devices may include sensors, smart meters, and the like.
  • the base station and the network may also be implemented as wireless devices, and the specific wireless device 2000a may operate as a base station/network node to other wireless devices.
  • the wireless devices 1000a to 1000f may be connected to the network 3000 through the base station 2000.
  • AI Artificial Intelligence
  • the network 3000 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network.
  • the wireless devices 1000a to 1000f may communicate with each other through the base station 2000/network 3000, but may directly communicate (e.g. sidelink communication) without going through the base station/network.
  • the vehicles 1000b-1 and 1000b-2 may perform direct communication (e.g. Vehicle to Vehicle (V2V)/Vehicle to everything (V2X) communication).
  • the IoT device eg, sensor
  • the IoT device may directly communicate with other IoT devices (eg, sensors) or other wireless devices 1000a to 1000f.
  • Wireless communication/connections 1500a, 1500b, and 1500c may be made between the wireless devices 1000a to 1000f/base station 2000 and base station 2000/base station 2000.
  • the wireless communication/connection is various wireless access such as uplink/downlink communication 1500a and sidelink communication 1500b (or D2D communication), base station communication 1500c (eg relay, IAB (Integrated Access Backhaul)). It can be achieved through technology (eg, 5G NR).
  • wireless communication/connection (1500a, 1500b, 1500c) wireless devices and base stations/wireless devices, base stations and base stations can transmit/receive radio signals to each other.
  • the wireless communication/connection 1500a, 1500b, 1500c may transmit/receive signals through various physical channels.
  • various signal processing processes eg, channel encoding/decoding, modulation/demodulation, resource mapping/demapping, etc.
  • resource allocation processes e.g., resource allocation processes, and the like.
  • 29 illustrates a wireless device that can be applied to the present invention.
  • the first wireless device 1000 and the second wireless device 2000 may transmit and receive wireless signals through various wireless access technologies (eg, LTE and NR).
  • ⁇ the first wireless device 1000 and the second wireless device 2000 ⁇ are ⁇ wireless device 1000x, base station 2000 ⁇ and/or ⁇ wireless device 1000x), wireless device 1000x in FIG. 28. ⁇ .
  • the first wireless device 1000 includes one or more processors 1020 and one or more memories 1040, and may further include one or more transceivers 1060 and/or one or more antennas 1080.
  • the processor 1020 controls the memory 1040 and/or transceiver 1060 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein.
  • the processor 1020 may process information in the memory 1040 to generate the first information/signal, and then transmit a wireless signal including the first information/signal through the transceiver 1060. Further, the processor 1020 may receive the wireless signal including the second information/signal through the transceiver 1060 and store the information obtained from the signal processing of the second information/signal in the memory 1040.
  • the memory 1040 may be connected to the processor 1020, and may store various information related to the operation of the processor 1020. For example, memory 1040 may be used to perform some or all of the processes controlled by processor 1020, or instructions to perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein. You can store software code that includes
  • the processor 1020 and the memory 1040 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
  • the transceiver 1060 may be connected to the processor 1020 and may transmit and/or receive wireless signals through one or more antennas 1080.
  • the transceiver 1060 may include a transmitter and/or receiver.
  • the transceiver 1060 may be mixed with a radio frequency (RF) unit.
  • the wireless device may mean a communication modem/circuit/chip.
  • the second wireless device 2000 may include one or more processors 2020, one or more memories 2040, and additionally include one or more transceivers 2060 and/or one or more antennas 2080.
  • the processor 2020 controls the memory 2040 and/or transceiver 2060 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein.
  • the processor 2020 may process information in the memory 2040 to generate third information/signal, and then transmit a wireless signal including the third information/signal through the transceiver 2060.
  • the processor 2020 may receive a wireless signal including the fourth information/signal through the transceiver 2060 and store the information obtained from the signal processing of the fourth information/signal in the memory 2040.
  • the memory 2040 may be connected to the processor 2020, and may store various information related to the operation of the processor 2020. For example, memory 2040 may be used to perform some or all of the processes controlled by processor 2020, or instructions to perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein. You can store software code that includes
  • the processor 2020 and the memory 2040 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
  • the transceiver 2060 may be connected to the processor 2020 and may transmit and/or receive wireless signals through one or more antennas 2080. Transceiver 2060 may include a transmitter and/or receiver. Transceiver 2060 may be mixed with an RF unit.
  • the wireless device may mean a communication modem/circuit/chip.
  • one or more protocol layers may be implemented by one or more processors 1020 and 2020.
  • one or more processors 1020, 2020 may implement one or more layers (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
  • the one or more processors 1020 and 2020 may include one or more Protocol Data Units (PDUs) and/or one or more Service Data Units (SDUs) in accordance with the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein. Can be created.
  • PDUs Protocol Data Units
  • SDUs Service Data Units
  • the one or more processors 1020 and 2020 may generate messages, control information, data or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein.
  • the one or more processors 1020, 2020 generate signals (eg, baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, suggestions and/or methods disclosed herein. , To one or more transceivers 1060 and 2060.
  • One or more processors 1020, 2020 may receive signals (eg, baseband signals) from one or more transceivers 1060, 2060, and the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein PDUs, SDUs, messages, control information, data, or information may be obtained according to the fields.
  • signals eg, baseband signals
  • One or more processors 1020, 2020 may be referred to as a controller, microcontroller, microprocessor, or microcomputer.
  • the one or more processors 1020, 2020 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
  • Descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this document may be implemented using firmware or software, and firmware or software may be implemented to include modules, procedures, functions, and the like.
  • the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this document include firmware or software configured to perform one or more processors 1020 and 2020 or stored in one or more memories 1040 and 2040 It can be driven by the above processor (1020, 2020).
  • the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein may be implemented using firmware or software in the form of code, instructions and/or instructions.
  • the one or more memories 1040 and 2040 may be connected to one or more processors 1020 and 2020, and may store various types of data, signals, messages, information, programs, codes, instructions and/or instructions.
  • the one or more memories 1040, 2040 may be comprised of ROM, RAM, EPROM, flash memory, hard drive, register, cache memory, computer readable storage medium, and/or combinations thereof.
  • the one or more memories 1040 and 2040 may be located inside and/or outside of the one or more processors 1020 and 2020. Also, the one or more memories 1040 and 2040 may be connected to the one or more processors 1020 and 2020 through various technologies such as a wired or wireless connection.
  • the one or more transceivers 1060 and 2060 may transmit user data, control information, radio signals/channels, and the like mentioned in the methods and/or operation flowcharts of the present document to one or more other devices.
  • the one or more transceivers 1060, 2060 may receive user data, control information, radio signals/channels, and the like referred to in the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed herein from one or more other devices. have.
  • one or more transceivers 1060 and 2060 may be connected to one or more processors 1020 and 2020, and may transmit and receive wireless signals.
  • one or more processors 1020, 2020 may control one or more transceivers 1060, 2060 to transmit user data, control information, or wireless signals to one or more other devices. Also, the one or more processors 1020 and 2020 may control the one or more transceivers 1060 and 2060 to receive user data, control information, or radio signals from one or more other devices. Further, one or more transceivers 1060, 2060 may be connected to one or more antennas 1080, 2080, and one or more transceivers 1060, 2060 may be described, functions described herein through one or more antennas 1080, 2080 , It may be set to transmit and receive user data, control information, radio signals/channels, etc. referred to in procedures, suggestions, methods and/or operation flowcharts.
  • the one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
  • the one or more transceivers 1060 and 2060 process the received radio signal/channel and the like in the RF band signal to process the received user data, control information, radio signal/channel, and the like using one or more processors 1020 and 2020. It can be converted to a baseband signal.
  • the one or more transceivers 1060 and 2060 may convert user data, control information, and radio signals/channels processed using one or more processors 1020 and 2020 from a baseband signal to an RF band signal.
  • one or more transceivers 1060, 2060 may include (analog) oscillators and/or filters.
  • FIG. 30 shows another example of a wireless device applied to the present invention.
  • the wireless device may be implemented in various forms according to use-example/service (see FIG. 28).
  • the wireless devices 1000 and 2000 correspond to the wireless devices 1000 and 2000 of FIG. 29, and various elements, components, units/units, and/or modules (module).
  • the wireless devices 1000 and 2000 may include a communication unit 1100, a control unit 1200, a memory unit 1300, and additional elements 1400.
  • the communication unit may include a communication circuit 1120 and a transceiver(s) 1140.
  • the communication circuit 1120 may include one or more processors 1020, 2020 and/or one or more memories 1040, 2040 of FIG. 29.
  • the additional element 1400 may be variously configured according to the type of wireless device.
  • the additional element 1400 may include at least one of a power unit/battery, an input/output unit (I/O unit), a driving unit, and a computing unit.
  • wireless devices include robots (FIGS. 28, 1000A), vehicles (FIGS. 28, 1000b-1, 1000b-2), XR devices (FIGS. 28, 1000c), portable devices (FIGS. 28, 1000d), and household appliances. (Fig. 28, 1000e), IoT device (Fig.
  • digital broadcasting terminal digital broadcasting terminal
  • 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 (FIGS. 28 and 4000), a base station (FIGS. 28 and 2000), and a network node.
  • the wireless device may be mobile or may be used in a fixed place depending on use-example/service.
  • various elements, components, units/parts, and/or modules in the wireless devices 1000 and 2000 may be connected to each other through a wired interface, or at least some of them may be connected wirelessly through the communication unit 1100.
  • the control unit 1200 and the communication unit 1100 are connected by wire, and the control unit 1200 and the first unit (eg, 1300, 1400) are connected through the communication unit 1100. It can be connected wirelessly.
  • each element, component, unit/unit, and/or module in the wireless devices 1000 and 2000 may further include one or more elements.
  • the controller 1200 may be composed of one or more processor sets.
  • the controller 1200 may be configured as a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing processor, and a memory control processor.
  • the memory unit 1300 may include random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory (non- volatile memory) and/or combinations thereof.
  • 31 illustrates a portable device applied to the present invention.
  • the portable device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, a smart glass), and a portable computer (eg, a notebook).
  • the mobile device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).
  • MS mobile station
  • UT user terminal
  • MSS mobile subscriber station
  • SS subscriber station
  • AMS advanced mobile station
  • WT wireless terminal
  • the portable device 1000 includes an antenna unit 1080, a communication unit 1100, a control unit 1200, a memory unit 1300, a power supply unit 1400a, an interface unit 1400b, and an input/output unit 1400c. ).
  • the antenna unit 1080 may be configured as part of the communication unit 1100.
  • Blocks 1100 to 1300/1400a to 1400c correspond to blocks 1100 to 1300/1400 in FIG. 34, respectively.
  • the communication unit 1100 may transmit and receive signals (eg, data, control signals, etc.) with other wireless devices and base stations.
  • the controller 1200 may perform various operations by controlling the components of the portable device 1000.
  • the controller 1200 may include an application processor (AP).
  • the memory unit 1300 may store data/parameters/programs/codes/commands necessary for driving the portable device 1000. Also, the memory unit 1300 may store input/output data/information.
  • the power supply unit 1400a supplies power to the portable device 1000 and may include a wired/wireless charging circuit, a battery, and the like.
  • the interface unit 1400b may support the connection between the portable device 1000 and other external devices.
  • the interface unit 1400b may include various ports (eg, audio input/output ports, video input/output ports) for connection with external devices.
  • the input/output unit 1400c may receive or output image information/signal, audio information/signal, data, and/or information input from a user.
  • the input/output unit 1400c may include a camera, a microphone, a user input unit, a display unit 1400d, a speaker, and/or a haptic module.
  • the input/output unit 1400c acquires information/signal (eg, touch, text, voice, image, video) input from a user, and the obtained information/signal is transmitted to the memory unit 1300. Can be saved.
  • the communication unit 1100 may convert information/signals stored in the memory into wireless signals, and transmit the converted wireless signals directly to other wireless devices or to a base station.
  • the communication unit 1100 may restore the received radio signal to original information/signal.
  • the restored information/signal is stored in the memory unit 1300, it can be output in various forms (eg, text, voice, image, video, heptic) through the input/output unit 1400c.
  • Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
  • one embodiment of the invention is one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • processors controllers, microcontrollers, microprocessors, and the like.
  • an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above.
  • the software code can be stored in memory and driven by a processor.
  • the memory is located inside or outside the processor, and can exchange data with the processor by various means already known.
  • the method of transmitting and receiving PDSCH in the wireless communication system of the present specification has been mainly described as an example applied to a 3GPP LTE/LTE-A system and a 5G system (New RAT system), but can be applied to various other wireless communication systems.

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Abstract

La présente invention concerne un procédé de transmission et de réception d'un PDSCH dans un système de communication sans fil et un dispositif s'y rapportant. Spécifiquement, un procédé mis en oeuvre par un terminal comprend : une étape consistant à recevoir des informations de commande de liaison descendante (DCI) comprenant un champ d'attribution de ressources de fréquence (FRA) provenant d'une station de base ; et une étape de réception du PDSCH provenant de la station de base sur la base du champ FRA, la taille du champ FRA et un indice associé à un bloc de ressources indiqué par le champ FRA pouvant être définis sur la base du nombre de PDSCH transmis simultanément au terminal.
PCT/KR2020/000183 2019-01-08 2020-01-06 Procédé de transmission et de réception de canal physique partagé de commande de liaison montante dans un système de communication sans fil, et dispositif s'y rapportant WO2020145595A1 (fr)

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KR20190002103 2019-01-08
KR10-2019-0002122 2019-01-08
KR20190002089 2019-01-08
KR10-2019-0002089 2019-01-08
KR20190002122 2019-01-08
KR10-2019-0002103 2019-01-08
KR20190003642 2019-01-11
KR10-2019-0003654 2019-01-11
KR10-2019-0003642 2019-01-11
KR20190003635 2019-01-11
KR20190003654 2019-01-11
KR10-2019-0003635 2019-01-11

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CN113692057A (zh) * 2021-08-26 2021-11-23 中信科移动通信技术股份有限公司 一种网络切片资源分配方法及系统
CN113692057B (zh) * 2021-08-26 2023-12-08 中信科移动通信技术股份有限公司 一种网络切片资源分配方法及系统

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