WO2020167103A1 - Procédé de rapport de marge de puissance dans une bande sans licence dans un système de communication sans fil et appareil associé - Google Patents

Procédé de rapport de marge de puissance dans une bande sans licence dans un système de communication sans fil et appareil associé Download PDF

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Publication number
WO2020167103A1
WO2020167103A1 PCT/KR2020/002263 KR2020002263W WO2020167103A1 WO 2020167103 A1 WO2020167103 A1 WO 2020167103A1 KR 2020002263 W KR2020002263 W KR 2020002263W WO 2020167103 A1 WO2020167103 A1 WO 2020167103A1
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WIPO (PCT)
Prior art keywords
band carrier
base station
report
terminal
pusch
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PCT/KR2020/002263
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English (en)
Korean (ko)
Inventor
안준기
김선욱
양석철
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엘지전자 주식회사
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Publication of WO2020167103A1 publication Critical patent/WO2020167103A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to a wireless communication system, and more particularly, to a method for reporting power headroom using a plurality of candidate transmission resources in an unlicensed band and an apparatus therefor.
  • Mobile communication systems have been developed to provide voice services while ensuring user activity.
  • the mobile communication system has expanded to not only voice but also data services, and nowadays, due to the explosive increase in traffic, a shortage of resources is caused and users demand for higher speed services, so a more advanced mobile communication system is required. have.
  • next-generation mobile communication system The requirements of the next-generation mobile communication system are largely explosive data traffic acceptance, dramatic increase in transmission rate per user, largely increased number of connected devices, very low end-to-end latency, and support for high energy efficiency. You should be able to. To this end, dual connectivity, Massive Multiple Input Multiple Output (MIMO), In-band Full Duplex, Non-Orthogonal Multiple Access (NOMA), and Super Wideband Various technologies such as wideband) support and device networking are being studied.
  • MIMO Massive Multiple Input Multiple Output
  • NOMA Non-Orthogonal Multiple Access
  • Super Wideband Various technologies such as wideband support and device networking are being studied.
  • An object of the present specification is to provide a method and apparatus for reporting power headroom in an unlicensed band in a wireless communication system.
  • an object of the present specification is to provide a method and apparatus for calculating PH for PH reporting on a plurality of carriers including a licensed band and an unlicensed band in a wireless communication system.
  • an object of the present specification is to provide a method and apparatus for adjusting transmission power of a terminal for transmitting an uplink signal on a plurality of carriers including a licensed band and an unlicensed band in a wireless communication system.
  • the present specification provides a method and apparatus for reporting power headroom through an unlicensed band in a wireless communication system.
  • the present specification provides a method for a terminal to report a power headroom (PH) in a wireless communication system, including a licensed band carrier and an unlicensed band carrier. Triggering PH reporting for carriers of Calculating a PH related to uplink signals transmitted on the plurality of carriers in a first candidate time resource among candidate time resources of the non-licensed band carrier available for the PH report; And reporting the calculated PH to the base station on the non-licensed band carrier.
  • PH power headroom
  • the calculated PH is a physical uplink shared channel scheduled for the non-licensed band carrier in a specific candidate time resource that succeeds in listen before talk (LBT) among the candidate time resources. : PUSCH).
  • the specific candidate time resource is characterized in that the LBT is the first successful candidate time resource.
  • the present specification is characterized in that the PH report is triggered based on a rule preset in the terminal or triggered by an indication of the base station.
  • the step of triggering the PH report when the PH report is triggered by the instruction of the base station, the step of triggering the PH report, the downlink signal instructing to trigger the PH report on the non-licensed band carrier the base station It characterized in that it further comprises the step of receiving from.
  • the present specification further comprises transmitting an uplink signal to the base station on a PUSCH scheduled in the licensed band carrier.
  • the transmitter for transmitting a radio signal
  • a receiver for receiving a radio signal
  • a processor functionally connected to the transmitter and the receiver, wherein the processor triggers PH reporting for a plurality of carriers including a licensed band carrier and an unlicensed band carrier ( trigger), and calculates a PH related to uplink signals transmitted on the plurality of carriers in the first candidate time resource among candidate time resources of the non-licensed band carrier available for the PH report, and the calculation And controlling the transmitter to report the obtained PH to the base station on the non-licensed band carrier.
  • the calculated PH is a physical uplink shared channel scheduled for the non-licensed band carrier in a specific candidate time resource that succeeds in listen before talk (LBT) among the candidate time resources. : PUSCH).
  • the present specification is characterized in that the specific candidate time resource is a candidate time resource that the LBT first succeeds.
  • the present specification is characterized in that the PH report is triggered based on a rule preset in the terminal or triggered by an indication of the base station.
  • the processor when the PH report is triggered by the instruction of the base station, the processor, the receiver to receive a downlink signal instructing to trigger the PH report from the base station on the unlicensed band carrier It characterized in that to control.
  • the present specification is characterized in that the processor controls the transmitter to transmit an uplink signal to the base station on a PUSCH scheduled in the licensed band carrier.
  • a method for receiving a power headroom (PH) report by a base station in a wireless communication system includes a plurality of carriers including a licensed band carrier and an unlicensed band carrier. Instructing the terminal of a trigger of PH reporting for the devices; And receiving a PH reported from the terminal on the non-licensed band carrier, wherein the PH is the first candidate time resource among candidate time resources of the non-licensed band carrier available for the PH report. It characterized in that it is calculated by the terminal based on the uplink signals transmitted on the carriers.
  • the transmitter for transmitting a radio signal
  • a receiver for receiving a radio signal
  • a processor functionally connected to the transmitter and the receiver, wherein the processor is a trigger of PH reporting for a plurality of carriers including a licensed band carrier and an unlicensed band carrier ( trigger) to the terminal, and control the receiver to receive a PH reported from the terminal on the non-licensed band carrier, and the PH is a candidate of the non-licensed band carrier available for the PH report It is characterized in that it is calculated by the terminal based on uplink signals transmitted on the plurality of carriers in the first candidate time resource among time resources.
  • the one or more processors include a licensed band carrier and a non- -The first candidate time resource among the candidate time resources of the non-licensed band carrier available for triggering the PH report for a plurality of carriers including an unlicensed band carrier
  • the PH related to uplink signals transmitted on the plurality of carriers is calculated, and the calculated PH is reported to the base station on the unlicensed band carrier.
  • a non-transitory computer readable medium that stores one or more instructions
  • one or more instructions executable by one or more processors are a terminal, a licensed band carrier And triggering PH reporting for a plurality of carriers including an unlicensed band carrier, and being the first candidate among candidate time resources of the non-licensed band carrier available for the PH report
  • a PH related to uplink signals transmitted on the plurality of carriers is calculated, and the calculated PH is reported to a base station on the unlicensed band carrier.
  • the present specification has an effect of being able to report power headroom in an unlicensed band in a wireless communication system.
  • the present specification has an effect of calculating PH for PH reporting on a plurality of carriers including a licensed band and an unlicensed band in a wireless communication system.
  • the present specification has an effect of adjusting the transmission power of a terminal for transmitting an uplink signal on a plurality of carriers including a licensed band and an unlicensed band in a wireless communication system.
  • FIG. 1 is a perspective view of an augmented reality electronic device according to an embodiment of the present invention.
  • FIG 2 shows an AI device according to an embodiment of the present invention.
  • FIG 3 shows an AI server according to an embodiment of the present invention.
  • FIG 4 shows an AI system according to an embodiment of the present invention.
  • FIG. 5 shows an example of an overall system structure of an NR to which the method proposed in the present specification can be applied.
  • FIG. 6 illustrates physical channels and general signal transmission used in a 3GPP system.
  • FIG 7 illustrates the structure of an uplink subframe used in LTE.
  • FIG 8 is a diagram illustrating an example of an LTE radio frame structure.
  • FIG. 9 is a diagram illustrating an example of a resource grid for a downlink slot.
  • FIG. 10 shows an example of a downlink subframe structure.
  • FIG. 11 shows an example of an uplink subframe structure.
  • FIG. 13 is a diagram showing an example of a frame structure type 2 and a frame structure type 3;
  • FIG. 14 illustrates a structure of a radio frame used in NR.
  • FIG. 16 illustrates the structure of a self-contained slot.
  • FIG 17 shows an example of a wireless communication system supporting an unlicensed band applicable to the present invention.
  • FIG. 18 is a flowchart of a CAP operation for transmitting a downlink signal through an unlicensed band of a base station.
  • 19 is a flowchart of a type 1 CAP operation of a terminal for transmitting an uplink signal.
  • FIG. 21 illustrates a non-interleaved CCE-REG mapping type.
  • 25 is a flowchart illustrating an example of a method of performing an idle mode DRX operation.
  • 26 is a diagram showing an example of an idle mode DRX operation.
  • FIG. 27 is a diagram showing an example of an idle mode DRX operation.
  • FIG. 28 is a flowchart illustrating an example of a method of performing a C-DRX operation.
  • 29 is a diagram showing an example of the C-DRX operation.
  • FIG. 30 is a diagram illustrating an example of a method for adjusting UL transmission power according to a maximum power limitation in a plurality of carriers proposed in the present specification.
  • 31 and 32 are diagrams showing an example of a method for reporting PH when UL transmission is performed on a plurality of carriers proposed in the present specification.
  • 33 is a diagram illustrating an example of a PH reporting method when UL transmission is performed on a plurality of carriers proposed in the present specification.
  • FIG. 34 is a flowchart illustrating an example of an operation implemented in a terminal for performing a method for a terminal to report power headroom (PH) in a wireless communication system proposed in the present specification.
  • PH power headroom
  • 35 is a flowchart illustrating an example of an operation implemented in a base station for performing a method for a terminal to report power headroom (PH) in a wireless communication system proposed in the present specification.
  • PH power headroom
  • a base station has a meaning as a terminal node of a network that directly communicates with a terminal.
  • the specific operation described as being performed by the base station in this document may be performed by an upper node of the base station in some cases. That is, it is apparent that various operations performed for communication with a terminal in a network comprising a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station.
  • BS Base station
  • eNB evolved-NodeB
  • BTS base transceiver system
  • AP access point
  • gNB general NB
  • 'Terminal' may be fixed or mobile, and UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS ( Advanced Mobile Station), Wireless terminal (WT), Machine-Type Communication (MTC) device, Machine-to-Machine (M2M) device, Device-to-Device (D2D) device.
  • UE User Equipment
  • MS Mobile Station
  • UT user terminal
  • MSS Mobile Subscriber Station
  • SS Subscriber Station
  • AMS Advanced Mobile Station
  • WT Wireless terminal
  • MTC Machine-Type Communication
  • M2M Machine-to-Machine
  • D2D Device-to-Device
  • downlink refers to communication from a base station to a terminal
  • uplink refers to 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 NOMA It can be used in various wireless access systems such as (non-orthogonal multiple access).
  • CDMA may be implemented with universal terrestrial radio access (UTRA) or radio technology such as CDMA2000.
  • TDMA may be implemented using a radio technology such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for GSM evolution (EDGE).
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • EDGE enhanced data rates for GSM evolution
  • OFDMA may be implemented with a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and evolved UTRA (E-UTRA).
  • UTRA is part of a universal mobile telecommunications system (UMTS).
  • 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) using E-UTRA, and employs OFDMA in downlink and SC-FDMA in uplink.
  • LTE-A evolution of 3GPP LTE.
  • 5G NR new radio
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC Ultra-Reliable and Low Latency Communications
  • V2X vehicle-to-everything
  • the 5G NR standard is classified into standalone (SA) and non-standalone (NSA) according to co-existence between the NR system and the LTE system.
  • SA standalone
  • NSA non-standalone
  • 5G NR supports various subcarrier spacing, and supports CP-OFDM in downlink and CP-OFDM and DFT-s-OFDM (SC-OFDM) in uplink.
  • Embodiments of the present invention may be supported by standard documents disclosed in at least one of IEEE 802, 3GPP, and 3GPP2 wireless access systems. That is, among the embodiments of the present invention, steps or parts not described to clearly reveal the technical idea of the present invention may be supported by the above documents. In addition, all terms disclosed in this document can be described by the standard document.
  • 3GPP LTE/LTE-A/NR New Radio
  • the technical features of the present invention are not limited thereto.
  • the three main requirements areas for 5G are (1) Enhanced Mobile Broadband (eMBB) area, (2) Massive Machine Type Communication (mMTC) area, and (3) ultra-reliability and It includes a low-latency communication (Ultra-reliable and Low Latency Communications, URLLC) area.
  • eMBB Enhanced Mobile Broadband
  • mMTC Massive Machine Type Communication
  • URLLC Low Latency Communications
  • KPI key performance indicator
  • eMBB goes far beyond basic mobile Internet access, covering rich interactive work, media and entertainment applications in the 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 processed as an application program simply using the data connection provided by the communication system.
  • the main reasons for the increased traffic volume are an increase in content size and an increase in the 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 the user.
  • Cloud storage and applications are increasing rapidly in mobile communication platforms, which can be applied to both work and entertainment.
  • cloud storage is a special use case that drives the growth of the uplink data rate.
  • 5G is also used for remote work in the cloud, and requires much lower end-to-end delays to maintain a good user experience when tactile interfaces are used.
  • Entertainment For example, cloud gaming and video streaming is another key factor that is increasing the demand for mobile broadband capabilities. Entertainment is essential on smartphones and tablets anywhere, including high mobility environments such as trains, cars and airplanes.
  • Another use case is augmented reality and information retrieval for entertainment.
  • augmented reality requires very low latency and an instantaneous amount of data.
  • one of the most anticipated 5G use cases relates to the ability to seamlessly connect embedded sensors in all fields, i.e. mMTC.
  • mMTC massive machine type computer
  • Industrial IoT is one of the areas where 5G plays a major role in enabling smart cities, asset tracking, smart utilities, agriculture and security infrastructure.
  • URLLC includes new services that will transform the industry with ultra-reliable/low-latency links such as self-driving vehicles and remote control of critical infrastructure.
  • the level of reliability and delay is 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 of providing streams rated at hundreds of megabits per second to gigabits per second. This high speed is required to deliver TVs in 4K or higher (6K, 8K and higher) resolutions as well as virtual and augmented reality.
  • Virtual Reality (VR) and Augmented Reality (AR) applications involve almost immersive sports events. Certain application programs may require special network settings. In the case of VR games, for example, game companies may need to integrate core servers with network operators' edge network servers to minimize latency.
  • Automotive is expected to be an important new driving force in 5G, with many use cases for mobile communication to vehicles. For example, entertainment for passengers demands simultaneous high capacity and high mobility mobile broadband. The reason is that future users will continue to expect high-quality connections, regardless of their location and speed.
  • Another application example in the automotive field is an augmented reality dashboard. It identifies an object in the dark on top of what the driver is looking through the front window, and displays information that tells the driver about the distance and movement of the object overlaid.
  • wireless modules enable communication between vehicles, exchange of information between the vehicle and supporting infrastructure, and exchange of information between the vehicle and other connected devices (eg, devices carried by pedestrians).
  • the safety system allows the driver to lower the risk of accidents by guiding alternative courses of action to make driving safer.
  • the next step will be a remote controlled or self-driven vehicle. It is very reliable and requires very fast communication between different self-driving vehicles and between the vehicle and the infrastructure. In the future, self-driving vehicles will perform all driving activities, and drivers will be forced to focus only on traffic anomalies that the vehicle itself cannot identify.
  • the technical requirements of self-driving vehicles call for ultra-low latency and ultra-fast reliability to increase traffic safety to levels unachievable by humans.
  • Smart cities and smart homes referred to as smart society, will be embedded with high-density wireless sensor networks.
  • a distributed network of intelligent sensors will identify the conditions for cost and energy-efficient maintenance of a city or home.
  • a similar setup can be done for each household.
  • Temperature sensors, window and heating controllers, burglar alarms and appliances are all wirelessly connected. 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 the behavior of suppliers and consumers, allowing smart grids to improve efficiency, reliability, economics, sustainability of production and the distribution of fuels such as electricity in an automated way.
  • the smart grid can also be viewed as another low-latency sensor network.
  • the health sector has many applications that can benefit from mobile communications.
  • the communication system can support telemedicine providing clinical care from remote locations. This can help reduce barriers to distance and improve access to medical services that are not consistently available in remote rural areas. It is also used to save lives in critical care and emergencies.
  • a wireless sensor network based on mobile communication may provide remote monitoring and sensors for parameters such as heart rate and blood pressure.
  • 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 reconfigurable wireless links is an attractive opportunity for many industries. However, achieving this requires that the wireless connection operates with a delay, reliability and capacity similar to that of the cable, and its management is 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 tracking of inventory and packages from anywhere using location-based information systems. Logistics and freight tracking use cases typically require low data rates, but require a wide range and reliable location information.
  • Machine learning refers to the field of researching methodologies to define and solve various problems dealt with in the field of artificial intelligence. do.
  • Machine learning is also defined as an algorithm that improves the performance of a task through continuous experience.
  • An artificial neural network is a model used in machine learning, and may refer to an overall model with problem-solving capabilities, composed of artificial neurons (nodes) that form a network by combining synapses.
  • the artificial neural network may be defined by a connection pattern between neurons of different layers, a learning process for updating model parameters, and an activation function for generating an output value.
  • the artificial neural network may include an input layer, an output layer, and optionally one or more hidden layers. Each layer includes one or more neurons, and the artificial neural network may include neurons and synapses connecting neurons. In an artificial neural network, each neuron can output a function of an activation function for input signals, weights, and biases input through synapses.
  • Model parameters refer to parameters determined through learning, and include weights of synaptic connections and biases of neurons.
  • hyperparameters refer to parameters that must be set before learning in a machine learning algorithm, and include a learning rate, iteration count, mini-batch size, and initialization function.
  • the purpose of learning artificial neural networks 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 the 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 when a label for training data is given, and a label indicates the correct answer (or result value) that the artificial neural network should infer when training data is input to the artificial neural network. It can mean.
  • Unsupervised learning may refer to a method of training an artificial neural network in a state where a label for training data is not given.
  • Reinforcement learning may mean a learning method in which an agent defined in a certain environment learns to select an action or action sequence that maximizes the cumulative reward in each state.
  • machine learning implemented as a deep neural network (DNN) including a plurality of hidden layers is sometimes referred to as deep learning (deep learning), and deep learning is a part of machine learning.
  • DNN deep neural network
  • machine learning is used in the sense including deep learning.
  • a robot may refer to a machine that automatically processes or operates a task given by its own capabilities.
  • a robot having a function of recognizing the environment and performing an operation by self-determining may be referred to as an intelligent robot.
  • Robots can be classified into industrial, medical, household, military, etc. depending on 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, etc. in a driving unit, and can travel on the ground or fly in the air through the driving unit.
  • Autonomous driving refers to self-driving technology
  • autonomous driving vehicle refers to a vehicle that is driven without a user's manipulation or with a user's minimal manipulation.
  • a technology that maintains a driving lane a technology that automatically adjusts the speed such as adaptive cruise control, a technology that automatically drives along a specified route, and a technology that automatically sets a route when a destination is set, etc. All of these can be included.
  • the vehicle includes all of a vehicle having only an internal combustion engine, a hybrid vehicle including an internal combustion engine and an electric motor, and an electric vehicle including only an electric motor, and may include not only automobiles, but also trains and motorcycles.
  • the autonomous vehicle can be viewed as a robot having an autonomous driving function.
  • the extended reality collectively refers to Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR).
  • VR technology provides only CG images of real world objects or backgrounds
  • AR technology provides virtually created CG images on top of real object images
  • MR technology is a computer that mixes and combines virtual objects in the real world. It is a graphic technology.
  • MR technology is similar to AR technology in that it shows real and virtual objects together.
  • virtual objects are used in a form that complements real objects
  • MR technology virtual objects and real objects are used with equal characteristics.
  • XR technology can be applied to HMD (Head-Mount Display), HUD (Head-Up Display), mobile phones, tablet PCs, laptops, desktops, TVs, digital signage, etc., and devices applied with XR technology are XR devices. It can be called as.
  • HMD Head-Mount Display
  • HUD Head-Up Display
  • mobile phones tablet PCs, laptops, desktops, TVs, digital signage, etc.
  • devices applied with XR technology are XR devices. It can be called as.
  • FIG. 1 is a perspective view of an augmented reality electronic device according to an embodiment of the present invention.
  • an electronic device may include a frame 1000, a control unit 2000, and a display unit 3000.
  • the electronic device may be provided in a glass type (smart glass).
  • the glass-type electronic device is configured to be worn on the head of the human body, and may include a frame (case, housing, etc.) 1000 therefor.
  • the frame 1000 may be formed of a flexible material to facilitate wearing.
  • the frame 1000 is supported on the head and provides a space in which various parts are mounted. As illustrated, electronic components such as a control unit 2000, a user input unit 1300, or an audio output unit 1400 may be mounted on the frame 1000. In addition, a lens covering at least one of the left eye and the right eye may be detachably mounted on the frame 1000.
  • the frame 1000 may have a form of glasses worn on the face of the user's body, but is not limited thereto, and may have a form such as goggles worn in close contact with the user's face. .
  • Such a frame 1000 includes a front frame 1100 having at least one opening and a pair of side frames 1200 extending in a first direction y crossing the front frame 1100 and parallel to each other. I can.
  • the control unit 2000 is provided to control various electronic components provided in the electronic device.
  • the controller 2000 may generate an image displayed to a user or an image in which images are continuous.
  • the controller 2000 may include an image source panel for generating an image and a plurality of lenses for diffusing and converging light generated from the image source panel.
  • the control unit 2000 may be fixed to one of the two side frames 1200.
  • the control unit 2000 may be fixed inside or outside any one side frame 1200, or may be integrally formed by being embedded inside any one side frame 1200.
  • the controller 2000 may be fixed to the front frame 1100 or may be provided separately from the electronic device.
  • the display unit 3000 may be implemented in the form of a head mounted display (HMD).
  • HMD type refers to a display method that is mounted on the head and displays an image directly in front of the user's eyes.
  • the display unit 3000 may be disposed to correspond to at least one of the left eye and the right eye so that an image can be directly provided in front of the user's eyes.
  • the display unit 3000 is positioned at a portion corresponding to the right eye so that an image can be output toward the right eye of the user.
  • the display unit 3000 may allow the user to visually perceive the external environment and simultaneously display an image generated by the controller 2000 to the user.
  • the display unit 3000 may project an image onto the display area using a prism.
  • the display unit 3000 may be formed to be light-transmitting so that the projected image and the general field of view (a range that the user sees through the eyes) can be seen at the same time.
  • the display unit 3000 may be translucent and may be formed of an optical element including glass.
  • the display unit 3000 may be inserted into an opening included in the front frame 1100 to be fixed, or located at the rear surface of the opening (ie, between the opening and the user), and fixed to the front frame 1100.
  • the display unit 3000 is positioned at the rear of the opening and fixed to the front frame 1100 as an example, but unlike this, the display unit 3000 is arranged and fixed at various positions of the frame 1000. I can.
  • the electronic device may provide an Augmented Reality (AR) that displays a virtual image as a single image by superimposing a virtual image on a real image or a background using such display characteristics.
  • AR Augmented Reality
  • FIG 2 shows an AI device 100 according to an embodiment of the present invention.
  • the AI device 100 includes a TV, a projector, a mobile phone, a smartphone, a desktop computer, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a tablet PC, a wearable device, a set-top box (STB). ), a DMB receiver, a radio, a washing machine, a refrigerator, a desktop computer, a digital signage, a robot, a vehicle, and the like.
  • PDA personal digital assistant
  • PMP portable multimedia player
  • STB set-top box
  • the terminal 100 includes a communication unit 110, an input unit 120, a running processor 130, a sensing unit 140, an output unit 150, a memory 170, and a processor 180.
  • the communication unit 110 may transmit and receive data with 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, and a control signal with external devices.
  • the communication technologies used by the communication unit 110 include Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Long Term Evolution (LTE), 5G, Wireless LAN (WLAN), and Wireless-Fidelity (Wi-Fi). ), BluetoothTM, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), ZigBee, and Near Field Communication (NFC).
  • 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
  • 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 an image signal, a microphone for receiving an audio signal, a user input unit for receiving information from a user, and the like.
  • a camera or microphone for treating a camera or microphone as a sensor, a signal obtained from the camera or microphone may be referred to as sensing data or sensor information.
  • the input unit 120 may acquire training data for model training and input data to be used when acquiring an output by using the training model.
  • the input unit 120 may obtain unprocessed input data, and in this case, the processor 180 or the running processor 130 may extract an input feature as a preprocess for the input data.
  • the learning processor 130 may train a model composed of an artificial neural network 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 other than the training data, and the inferred value can be used as a basis for a decision to perform a certain 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 the memory 170, an external memory directly coupled to the AI device 100, or a memory maintained in an external device.
  • the sensing unit 140 may acquire at least one of internal information of the AI device 100, information about the surrounding environment of the AI device 100, and user information by using various sensors.
  • 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, etc.
  • the output unit 150 may generate output related to visual, auditory or tactile sense.
  • the output unit 150 may include a display unit that outputs visual information, a speaker that outputs auditory information, and a haptic module that outputs tactile information.
  • the memory 170 may store data supporting various functions of the AI device 100.
  • the memory 170 may store input data, training data, a learning model, and a learning history acquired from the input unit 120.
  • the processor 180 may determine at least one executable operation of the AI device 100 based on information determined or generated using a data analysis algorithm or a machine learning algorithm. Further, the processor 180 may perform the determined operation by controlling the components of the AI device 100.
  • the processor 180 may request, search, receive, or utilize data from the learning processor 130 or the memory 170, and perform a predicted or desirable operation among the at least one executable operation.
  • the components of the AI device 100 can be controlled 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.
  • the processor 180 may obtain 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 a speech input into a character string or a Natural Language Processing (NLP) engine for obtaining intention information of a natural language. Intention information corresponding to the input can be obtained.
  • STT Speech To Text
  • NLP Natural Language Processing
  • At this time, at least one or more of the STT engine and the NLP engine may be composed of an artificial neural network, at least partially trained according to a machine learning algorithm.
  • at least one 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. Can be.
  • the processor 180 collects history information including user feedback on the operation content or operation of the AI device 100 and stores it in the memory 170 or the learning processor 130, or the AI server 200 Can be transferred to an external device.
  • 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 to drive the application program.
  • FIG 3 shows an AI server 200 according to an embodiment of the present invention.
  • the AI server 200 may refer to a device that trains an artificial neural network using a machine learning algorithm or uses the learned artificial neural network.
  • the AI server 200 may be composed of a plurality of servers to perform distributed processing, or may be defined as a 5G network.
  • the AI server 200 may be included as a part of the AI device 100 to perform at least part of AI processing together.
  • the AI server 200 may include a communication unit 210, a memory 230, a learning 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 memory 230 may include a model storage unit 231.
  • the model storage unit 231 may store a model (or artificial neural network, 231a) being trained or trained through the learning processor 240.
  • the learning processor 240 may train the artificial neural network 231a using the training data.
  • the learning model may be used while being mounted on the AI server 200 of the artificial neural network, or may be mounted on an external device such as the AI device 100 and used.
  • the learning model can be implemented in hardware, software, or a combination of hardware and software. When part or all of the learning model is implemented in software, one or more instructions constituting the learning model may be stored in the memory 230.
  • the processor 260 may infer a result value for new input data using the learning model, and generate a response or a control command based on the inferred result value.
  • FIG 4 shows an AI system 1 according to an embodiment of the present invention.
  • the AI system 1 includes at least one of an AI server 200, a robot 100a, an autonomous vehicle 100b, an XR device 100c, a smartphone 100d, or a home appliance 100e. It is connected to the cloud network 10.
  • the robot 100a to which the AI technology is applied, the autonomous vehicle 100b, the XR device 100c, the smartphone 100d, or the home appliance 100e may be referred to as the AI devices 100a to 100e.
  • the cloud network 10 may constitute a part of the cloud computing infrastructure or may mean a network that exists in the cloud computing infrastructure.
  • the cloud network 10 may be configured using a 3G network, a 4G or Long Term Evolution (LTE) network, or a 5G network.
  • LTE Long Term Evolution
  • the devices 100a to 100e and 200 constituting the AI system 1 may be connected to each other through the cloud network 10.
  • the devices 100a to 100e and 200 may communicate with each other through a base station, but may communicate with each other directly without through a base station.
  • the AI server 200 may include a server that performs AI processing and a server that performs an operation on big data.
  • the AI server 200 includes at least one of a robot 100a, an autonomous vehicle 100b, an XR device 100c, a smartphone 100d, or a home appliance 100e, which are AI devices constituting the AI system 1 It is connected through the cloud network 10 and may help at least part of the AI processing of the connected AI devices 100a to 100e.
  • the AI server 200 may train an artificial neural network according to a machine learning algorithm in place of the AI devices 100a to 100e, and may directly store the learning model or transmit it to the AI devices 100a to 100e.
  • the AI server 200 receives input data from the AI devices 100a to 100e, infers a result value for the received input data using a learning model, and generates a response or control command based on the inferred result value. It can be generated and transmitted to the AI devices 100a to 100e.
  • the AI devices 100a to 100e may infer a result value of input data using a direct learning model, and generate a response or a control command based on the inferred result value.
  • 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. 4 may be viewed as a specific example of the AI device 100 illustrated in FIG. 2.
  • the robot 100a is applied with AI technology and may 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 the like.
  • the robot 100a may include a robot control module for controlling an operation, and the robot control module may refer to a software module or a chip implementing the same as hardware.
  • the robot 100a acquires status information of the robot 100a by using sensor information acquired from various types of sensors, detects (recognizes) the surrounding environment and objects, generates map data, or moves paths and travels. It can decide a plan, decide a response to user interaction, or decide an action.
  • the robot 100a may use sensor information obtained from at least one sensor from among a lidar, a radar, and a camera in order to determine a moving 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 by the robot 100a or learned by 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 it transmits sensor information to an external device such as the AI server 200 and performs the operation by receiving the result generated accordingly. You may.
  • the robot 100a determines a movement path and a driving plan using at least one of map data, object information detected from sensor information, or object information acquired from an external device, and controls the driving unit to determine the determined movement path and travel plan. Accordingly, the robot 100a can be driven.
  • the map data may include object identification information on various objects arranged in a space in which the robot 100a moves.
  • the map data may include object identification information on 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 robot 100a may perform an operation or run by controlling a driving unit based on a user's control/interaction.
  • the robot 100a may acquire interaction intention information according to a user's motion or voice speech, and determine a response based on the obtained intention information to perform an operation.
  • the autonomous vehicle 100b may be implemented as a mobile robot, vehicle, or unmanned aerial vehicle by applying AI technology.
  • the autonomous driving vehicle 100b may include an autonomous driving control module for controlling an autonomous driving function, and the autonomous driving control module may refer to a software module or a chip implementing the same as hardware.
  • the autonomous driving control module may be included inside as a configuration of the autonomous driving vehicle 100b, but may be configured as separate hardware and connected to the exterior of the autonomous driving vehicle 100b.
  • the autonomous driving vehicle 100b acquires state information of the autonomous driving vehicle 100b using sensor information obtained from various types of sensors, detects (recognizes) surrounding environments and objects, or generates map data, It is possible to determine the travel route and travel plan, or to determine the motion.
  • the autonomous vehicle 100b may use sensor information obtained from at least one sensor from among a lidar, a radar, and a camera, similar to the robot 100a, in order to determine a moving route and a driving plan.
  • the autonomous vehicle 100b may recognize an environment or object in an area where the view is obscured or an area greater than a certain distance by receiving sensor information from external devices, or directly recognized information 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 movement using the recognized surrounding environment information or object information.
  • the learning model may be directly learned by the autonomous vehicle 100b or learned by 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 it operates by transmitting sensor information to an external device such as the AI server 200 and receiving the result generated accordingly. You can also do
  • the autonomous vehicle 100b determines a movement path and a driving plan using at least one of map data, object information detected from sensor information, or object information acquired from an external device, and controls the driving unit to determine the determined movement path and driving.
  • the autonomous vehicle 100b can be driven according to a plan.
  • the map data may include object identification information on various objects arranged in a space (eg, a road) in which the autonomous vehicle 100b travels.
  • the map data may include object identification information on fixed objects such as street lights, rocks, and buildings, and movable objects such as vehicles and pedestrians.
  • the object identification information may include a name, type, distance, and location.
  • the autonomous vehicle 100b may perform an operation or drive by controlling a driving unit based on a user's control/interaction.
  • the autonomous vehicle 100b may acquire interaction intention information according to a user's motion or voice speech, and determine a response based on the obtained intention information to perform the operation.
  • the XR device 100c is applied with AI technology, such as HMD (Head-Mount Display), HUD (Head-Up Display) provided in the vehicle, TV, mobile phone, smart phone, computer, wearable device, home appliance, digital signage. , A vehicle, a fixed robot, or a mobile robot.
  • HMD Head-Mount Display
  • HUD Head-Up Display
  • the XR device 100c analyzes 3D point cloud data or image data acquired through various sensors or from an external device to generate location data and attribute data for 3D points, thereby providing information on surrounding spaces or real objects.
  • the XR object to be acquired and output can be rendered and output.
  • the XR apparatus 100c may output an XR object including additional information on the recognized object in correspondence with the recognized object.
  • the XR apparatus 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 may provide information corresponding to the recognized real object.
  • the learning model may be directly learned by the XR device 100c or learned by an external device such as the AI server 200.
  • the XR device 100c may directly generate a result using a learning model to perform an operation, but transmits sensor information to an external device such as the AI server 200 and receives the result generated accordingly to perform the operation. You can also do it.
  • the robot 100a may 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, etc. by applying AI technology and autonomous driving technology.
  • the robot 100a to which AI technology and autonomous driving technology are applied may refer to a robot having an autonomous driving function or a robot 100a interacting with the autonomous driving vehicle 100b.
  • the robot 100a having an autonomous driving function may collectively refer to devices that move by themselves according to a given movement line without the user's control or by determining the movement line by themselves.
  • the robot 100a having an autonomous driving function and the autonomous driving vehicle 100b may use a common sensing method to determine one or more of a moving route or a driving plan.
  • the robot 100a having an autonomous driving function and the autonomous driving vehicle 100b may determine one or more of a movement route or a driving plan using information sensed through a lidar, a radar, and a camera.
  • the robot 100a interacting with the autonomous driving vehicle 100b exists separately from the autonomous driving vehicle 100b and is linked to an autonomous driving function inside or outside the autonomous driving vehicle 100b, or ), you can perform an operation associated with the user on board.
  • the robot 100a interacting with the autonomous driving vehicle 100b acquires sensor information on behalf of the autonomous driving vehicle 100b and provides it to the autonomous driving vehicle 100b, or acquires sensor information and information about the surrounding environment or By generating object information and providing it to the autonomous vehicle 100b, it is possible to control or assist the autonomous driving function of the autonomous driving vehicle 100b.
  • the robot 100a interacting with the autonomous vehicle 100b may monitor a user in the autonomous vehicle 100b or control the functions of the autonomous vehicle 100b through interaction with the user. .
  • the robot 100a may activate an autonomous driving function of the autonomous driving vehicle 100b or assist in controlling a driving unit of the autonomous driving vehicle 100b.
  • the functions of the autonomous vehicle 100b controlled by the robot 100a may include not only an autonomous driving function, but also functions provided by a navigation system or an audio system provided inside the autonomous driving vehicle 100b.
  • the robot 100a interacting with the autonomous driving vehicle 100b may provide information or assist a function to the autonomous driving vehicle 100b from outside of the autonomous driving 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 driving vehicle 100b, such as an automatic electric charger for an electric vehicle. You can also automatically connect an electric charger to the charging port.
  • the robot 100a may 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, a drone, etc. by applying AI technology and XR technology.
  • the robot 100a to which the XR technology is applied may refer to a robot that is an object of control/interaction in an XR image.
  • the robot 100a is distinguished from the XR device 100c and may be interlocked with each other.
  • the robot 100a which is the object of control/interaction in the 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 linked remotely through an external device such as the XR device 100c, and adjust the autonomous driving path of the robot 100a through the interaction.
  • You can control motion or driving, or check information on surrounding objects.
  • the autonomous vehicle 100b may be implemented as 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 refer to an autonomous driving vehicle including a means for providing an XR image, or an autonomous driving vehicle that is an object of control/interaction within the XR image.
  • the autonomous vehicle 100b, which is an object of control/interaction in the XR image is distinguished from the XR device 100c and may be interlocked with each other.
  • the autonomous vehicle 100b provided with a means for providing an XR image may acquire sensor information from sensors including a camera, and may 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 in a 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 part of the XR object may be output to overlap the actual object facing the occupant's gaze.
  • the XR object when the XR object is output on a display provided inside the autonomous vehicle 100b, at least a part of the XR object may be output to overlap 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, motorcycles, pedestrians, and buildings.
  • the autonomous driving vehicle 100b which is the object of control/interaction in the XR image, acquires sensor information from sensors including a camera
  • the autonomous driving vehicle 100b or the XR device 100c is based on the sensor information.
  • An XR image is generated, and the XR device 100c may output the generated XR image.
  • the autonomous vehicle 100b may operate based on a control signal input through an external device such as the XR device 100c or a user's interaction.
  • FIG. 5 shows an example of an overall system structure of an NR to which the method proposed in the present specification can be applied.
  • the NG-RAN is composed of gNBs that provide an NG-RA user plane (new AS sublayer/PDCP/RLC/MAC/PHY) and a control plane (RRC) protocol termination for UE (User Equipment). do.
  • NG-RA user plane new AS sublayer/PDCP/RLC/MAC/PHY
  • RRC control plane
  • the gNBs are interconnected through an Xn interface.
  • 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
  • a terminal receives information from a base station through a downlink (DL), and the terminal transmits information to the base station through an uplink (UL).
  • 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 information transmitted and received by them.
  • the terminal newly entering the cell performs an initial cell search operation such as synchronizing with the base station (S11).
  • the UE receives a Primary Synchronization Channel (PSCH) and a Secondary Synchronization Channel (SSCH) from the base station, synchronizes with the base station, and acquires information such as cell identity (cell identity).
  • the terminal may obtain intra-cell broadcast information by receiving a PBCH (Physical Broadcast Channel) from the base station.
  • the UE may check a downlink channel state by receiving a DL RS (Downlink Reference Signal) in the initial cell search step.
  • PBCH Physical Broadcast Channel
  • the UE may receive more detailed system information by receiving a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Control Channel (PDSCH) corresponding thereto (S12).
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Control Channel
  • the terminal may perform a random access procedure to complete the access to the base station (S13 to S16).
  • the UE may transmit a preamble through a physical random access channel (PRACH) (S13), and receive a random access response (RAR) for the preamble through a PDCCH and a corresponding PDSCH (S14).
  • PRACH physical random access channel
  • RAR random access response
  • the UE transmits a PUSCH (Physical Uplink Shared Channel) using scheduling information in the RAR (S15), and may perform a contention resolution procedure such as a PDCCH and a corresponding PDSCH (S16).
  • PUSCH Physical Uplink Shared Channel
  • the UE may perform PDCCH/PDSCH reception (S17) and PUSCH/PUCCH (Physical Uplink Control Channel) transmission (S18) as a general uplink/downlink signal transmission procedure.
  • Control information transmitted by the terminal to the base station is referred to as UCI (Uplink Control Information).
  • UCI includes HARQ ACK/NACK (Hybrid Automatic Repeat and ReQuest Acknowledgement/Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), and the like.
  • CSI includes Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indication (RI), and the like.
  • UCI is generally transmitted through PUCCH, but may be transmitted through PUSCH when control information and data are to be transmitted at the same time.
  • the terminal may aperiodically transmit UCI through the PUSCH according to the request/instruction of the network.
  • FIG 7 illustrates the structure of an uplink subframe used in LTE.
  • a subframe 500 includes two 0.5ms slots 501. Each slot consists of a plurality of symbols 502, and one symbol corresponds to one SC-FDMA symbol.
  • the RB 503 is a resource allocation unit corresponding to 12 subcarriers in the frequency domain and one slot in the time domain.
  • the structure of an uplink subframe of LTE is largely divided into a data region 504 and a control region 505.
  • the data region refers to a communication resource used to transmit data such as voice and packet transmitted to each terminal, and includes a physical uplink shared channel (PUSCH).
  • PUSCH physical uplink shared channel
  • the control region refers to a communication resource used to transmit an uplink control signal, for example, a downlink channel quality report from each terminal, a reception ACK/NACK for a downlink signal, an uplink scheduling request, etc., and a physical uplink (PUCCH) Control Channel).
  • the Sounding Reference Signal (SRS) is transmitted through the last SC-FDMA symbol on the time axis in one subframe.
  • FIG 8 is a diagram illustrating an example of an LTE radio frame structure.
  • a radio frame includes 10 subframes.
  • the subframe includes two slots in the time domain.
  • the time for transmitting one subframe is defined as a transmission time interval (TTI).
  • TTI transmission time interval
  • one subframe may have a length of 1 millisecond (ms)
  • one slot may have a length of 0.5 ms.
  • One slot includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols in the time domain. Since 3GPP LTE uses OFDMA in downlink, an OFDM symbol is for indicating one symbol period.
  • the OFDM symbol may also be referred to as an SC-FDMA symbol or symbol period.
  • a resource block (RB) is a resource allocation unit, and includes a plurality of consecutive subcarriers in one slot.
  • the structure of the radio frame is exemplary. Accordingly, the number of subframes included in the radio frame, the number of slots included in the subframe, or the number of OFDM symbols included in the slot may be modified in various ways.
  • FIG. 9 is a diagram illustrating an example of a resource grid for a downlink slot.
  • a downlink slot includes a plurality of OFDM symbols in a time domain.
  • one downlink slot includes 7 OFDM symbols
  • one resource block (RB) includes 12 subcarriers in the frequency domain.
  • Each element of the resource grid is referred to as a resource element (RE).
  • One RB contains 12 ⁇ 7 REs.
  • the number NDL of RBs included in the downlink slot varies according to the downlink transmission bandwidth.
  • the structure of the uplink slot may be the same as the structure of the downlink slot.
  • FIG. 10 shows an example of a downlink subframe structure.
  • up to three OFDM symbols located in the first half of a first slot in a subframe are a control region to which a control channel is allocated.
  • the remaining OFDM symbols correspond to a data region to which the PDSCH is allocated.
  • Examples of downlink control channels used in 3GPP LTE include a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), a physical hybrid ARQ indicator channel (PHICH), and the like.
  • the PCFICH is transmitted in the first OFDM symbol of a subframe, and carries information on OFDM symbols used for transmission of control channels within the subframe.
  • the PHICH is a response to uplink transmission and carries a HARQ acknowledgment (ACK)/negative-acknowledgment (NACK) signal.
  • Control information transmitted through the PDCCH is referred to as downlink control information (DCI).
  • the DCI includes uplink or downlink scheduling information, or includes an uplink transmission (Tx) power control command for arbitrary UE groups.
  • PDCCH is a transport format and resource allocation of a downlink shared channel (DL-SCH), resource allocation information of an uplink shared channel (UL-SCH), paging information for a paging channel (PCH), a system for a DL-SCH.
  • Information resource allocation of upper layer control messages such as a random access response transmitted on the PDSCH, a set of Tx power control commands for individual UEs within an arbitrary UE group, voice over IP (VoIP) It can carry the Tx power control command, activation, etc.
  • a plurality of PDCCHs may be transmitted in the control region.
  • the UE can monitor a plurality of PDCCHs.
  • the PDCCH is transmitted on an aggregation of one or several consecutive control channel elements (CCEs).
  • CCEs control channel elements
  • CCE is a logical allocation unit used to provide a PDCCH with a coding rate based on a state of a radio channel.
  • CCE corresponds to a plurality of resource element groups.
  • the format of the PDCCH and the number of bits of the available PDCCH are determined according to the correlation between the number of CCEs and the coding rate provided by the CCEs.
  • the BS determines the PDCCH format according to the DCI to be transmitted to the UE, and attaches a cyclic redundancy check (CRC) to the control information.
  • the CRC is masked with a unique identifier (referred to as a radio network temporary identifier (RNTI)) according to the owner or use of the PDCCH.
  • RNTI radio network temporary identifier
  • a unique identifier for that UE may be masked on the CRC.
  • C-RNTI cell-RNTI
  • a paging indicator identifier eg, paging-RNTI (P-RNTI)
  • P-RNTI paging-RNTI
  • SIB system information block
  • SI-RNTI system information RNTI
  • Random access of the UE In order to indicate a random access response that is a response to transmission of the preamble, a random access-RNTI (RA-RNTI) may be masked on the CRC.
  • FIG. 11 shows an example of an uplink subframe structure.
  • an uplink subframe may be divided into a control region and a data region in the frequency domain.
  • a physical uplink control channel (PUCCH) for carrying uplink control information is allocated to the control region.
  • a physical uplink shared channel (PUSCH) for carrying user data is allocated to the data area.
  • PUCCH for one UE is allocated to an RB pair in a subframe. RBs belonging to the RB pair each occupy different subcarriers in two slots. This is called that the RB pair allocated to the PUCCH is frequency-hopped at the slot boundary.
  • Frame structure type 1 can be applied to both full duplex and half duplex FDD.
  • the subframe is defined by two consecutive slots, and the subframe i consists of slots 2i and 2i+1.
  • 10 subframes are available for downlink transmission, and 10 subframes are available for uplink transmission at every 10ms interval.
  • Uplink and downlink transmissions are separated in the frequency domain.
  • the UE In half-duplex FDD operation, the UE cannot transmit and receive at the same time, while there is no such limitation in full-duplex FDD.
  • Frame structure type 2 is applicable to FDD.
  • Supported uplink-downlink configurations are listed in Table 2, where, for each subframe in the radio frame, "D" represents that the subframe is reserved for downlink transmission, and "U” represents the subframe. Indicates that a frame is reserved for uplink transmission, and "S” indicates a downlink pilot time slot (DwPTS), a guard period (GP), and an uplink pilot time slot (UpPTS).
  • DwPTS downlink pilot time slot
  • GP guard period
  • UpPTS uplink pilot time slot
  • Uplink-downlink configuration with switch-point periodicity from downlink to uplink of both 5 ms and 10 ms is supported.
  • the special subframe exists in both half-frames.
  • the special subframe exists only in the first halfframe.
  • Subframes 0 and 5 and DwPTS are always reserved for downlink transmission. UpPTS and subframes immediately following the special subframe are always reserved for uplink transmission.
  • Frame structure type 3 can be applied to UCell operation. Although not limited thereto, the frame structure type 3 can be applied only to the operation of a licensed assisted access (LAA) SCell having a normal CP.
  • the frame has a length of 10ms and is defined as 10 1ms subframes.
  • Subframe #i is defined as two consecutive slots #2i and #2i+1.
  • Each subframe in the frame may be used for downlink or uplink transmission, or may be empty.
  • Downlink transmission occupies one or more consecutive subframes (occupy), and starts from an arbitrary point in the subframe and ends at a subframe boundary or DwPTS of Table 1.
  • Uplink transmission occupies one or more consecutive subframes.
  • FIG. 13 is a diagram illustrating an example of a frame structure type 2 and a frame structure type 3. Specifically, FIG. 13(a) shows an example of a frame structure type 2, and FIG. 13(b) shows an example of a frame structure type 3.
  • Table 1 shows an example of a configuration of a special subframe.
  • Table 2 shows an example of an uplink-downlink configuration.
  • FIG. 14 illustrates a structure of a radio frame used in NR.
  • uplink and downlink transmission is composed of frames.
  • the radio frame has a length of 10ms and is defined as two 5ms half-frames (HF).
  • the half-frame is defined as five 1ms subframes (Subframe, SF).
  • the subframe is divided into one or more slots, and the number of slots in the subframe depends on Subcarrier Spacing (SCS).
  • SCS Subcarrier Spacing
  • Each slot includes 12 or 14 OFDM(A) symbols according to a cyclic prefix (CP). When a normal CP is used, each slot includes 14 symbols. When the extended CP is used, each slot includes 12 symbols.
  • the symbol may include an OFDM symbol (or CP-OFDM symbol) and an SC-FDMA symbol (or DFT-s-OFDM symbol).
  • Table 3 exemplifies that when a normal CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to the SCS.
  • Table 4 illustrates that when the extended CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to the SCS.
  • OFDM(A) numerology eg, SCS, CP length, etc.
  • OFDM(A) numerology eg, SCS, CP length, etc.
  • the (absolute time) section of the time resource eg, SF, slot or TTI
  • TU Time Unit
  • the slot includes a plurality of symbols in the time domain. For example, in the case of a normal CP, one slot includes 14 symbols, but in the case of an extended CP, one slot includes 12 symbols.
  • the carrier includes a plurality of subcarriers in the frequency domain.
  • RB Resource Block
  • the BWP Bandwidth Part
  • P Physical Broadband
  • the carrier may contain up to N (eg, 5) BWPs. Data communication is performed through the activated BWP, and only one BWP can be activated to one terminal.
  • Each element in the resource grid is referred to as a resource element (RE), and one complex symbol may be mapped.
  • RE resource element
  • FIG. 16 illustrates the structure of a self-contained slot.
  • a frame is characterized by a self-contained structure in which all of a DL control channel, DL or UL data, and a UL control channel can be included in one slot.
  • the first N symbols in a slot may be used to transmit a DL control channel (hereinafter, a DL control region), and the last M symbols in a slot may be used to transmit a UL control channel (hereinafter, a UL control region).
  • N and M are each an integer of 0 or more.
  • a resource region (hereinafter, a data region) between the DL control region and the UL control region may be used for DL data transmission or UL data transmission.
  • the following configuration may be considered. Each section was listed in chronological order.
  • the PDCCH may be transmitted in the DL control region, and the PDSCH may be transmitted in the DL data region.
  • PUCCH may be transmitted in the UL control region, and PUSCH may be transmitted in the UL data region.
  • DCI downlink control information
  • DL data scheduling information for example, DL data scheduling information, UL data scheduling information, and the like
  • uplink control information for example, positive acknowledgment/negative acknowledgment (ACK/NACK) information for DL data, channel state information (CSI) information, scheduling request (SR), and the like may be transmitted.
  • the GP provides a time gap when the base station and the terminal switch from a transmission mode to a reception mode or a process from a reception mode to a transmission mode. Some symbols at a time point at which the DL to UL is switched in the subframe may be set as GP.
  • FIG 17 shows an example of a wireless communication system supporting an unlicensed band applicable to the present invention.
  • a cell operating in a licensed band is defined as an L-cell, and a carrier of the L-cell is defined as (DL/UL) LCC.
  • a cell operating in an unlicensed band (hereinafter, U-band) is defined as a U-cell, and a carrier of the U-cell is defined as (DL/UL) UCC.
  • the carrier/carrier-frequency of a cell may mean an operating frequency (eg, center frequency) of the cell.
  • Cell/carrier eg, CC
  • a cell is collectively referred to as a cell.
  • the LCC may be set to PCC (Primary CC) and the UCC may be set to SCC (Secondary CC).
  • the terminal and the base station may transmit and receive signals through one UCC or a plurality of carrier-coupled UCCs. That is, the terminal and the base station can transmit and receive signals through only UCC(s) without an LCC.
  • the signal transmission/reception operation in the unlicensed band described in the present invention may be performed based on all of the above-described configuration scenarios (unless otherwise stated).
  • frame type 3 of LTE (see FIG. 13(b)) or NR frame structure (see FIG. 14) may be used.
  • the configuration of OFDM symbols occupied for uplink/downlink signal transmission in the frame structure for the unlicensed band may be set by the base station.
  • the OFDM symbol may be replaced with an SC-FDM(A) symbol.
  • the base station may inform the terminal of the configuration of OFDM symbols used in subframe #n through signaling.
  • the subframe may be replaced with a slot or a time unit (TU).
  • the terminal is subframe # through a specific field (eg, Subframe configuration for LAA field, etc.) in the DCI received from the base station in subframe #n-1 or subframe #n. It is possible to assume (or identify) a configuration of an OFDM symbol occupied within n.
  • a specific field eg, Subframe configuration for LAA field, etc.
  • Table 5 shows the configuration of OFDM symbols used for transmission of a downlink physical channel and/or a physical signal in a current and/or next subframe in the subframe configuration for LAA field in the LTE system. Illustrate how to display.
  • the base station may inform the terminal of information on the uplink transmission period through signaling.
  • the terminal may obtain'UL duration' and'UL offset' information for subframe #n through the'UL duration and offset' field in the detected DCI.
  • Table 6 illustrates how the UL duration and offset field indicates the UL offset and UL duration configuration in the LTE system.
  • the base station may perform one of the following unlicensed band access procedures (eg, Channel Access Procedure, CAP) for downlink signal transmission in the unlicensed band.
  • CAP Channel Access Procedure
  • FIG. 18 is a flowchart of a CAP operation for transmitting a downlink signal through an unlicensed band of a base station.
  • the base station may initiate a channel access procedure (CAP) for downlink signal transmission (eg, signal transmission including PDSCH/PDCCH/EPDCCH) through an unlicensed band (S1210).
  • CAP channel access procedure
  • the base station may randomly select the backoff counter N within the contention window (CW) according to step 1.
  • the N value is set to the initial value N init (S1220).
  • N init is selected as a random value from 0 to CW p .
  • the base station ends the CAP process (S1232).
  • the base station may perform Tx burst transmission including PDSCH/PDCCH/EPDCCH (S1234).
  • the base station decreases the backoff counter value by 1 according to step 2 (S1240). Subsequently, the base station checks whether the channel of the U-cell(s) is in an idle state (S1250), and if the channel is in an idle state (S1250; Y), it checks whether the backoff counter value is 0 (S1230). Conversely, if the channel is not idle in step S1250, that is, if the channel is busy (S1250; N), the base station has a delay period longer than the slot time (eg, 9usec) according to step 5 (defer duration T d ; 25usec or more).
  • the base station has a delay period longer than the slot time (eg, 9usec) according to step 5 (defer duration T d ; 25usec or more).
  • the base station may resume the CAP process again.
  • the delay period may consist of a 16 usec period and m p consecutive slot times (eg, 9 usec) immediately following.
  • the base station performs step S1260 again to check whether the channel of the U-cell(s) is idle during the new delay period.
  • Table 7 illustrates that m p applied to the CAP, minimum CW, maximum CW, maximum channel occupancy time (MCOT) and allowed CW sizes vary according to the channel access priority class. .
  • the contention window size applied to the first downlink CAP may be determined based on various methods. For example, the contention window size may be adjusted based on a probability that HARQ-ACK values corresponding to PDSCH transmission(s) within a certain time period (eg, a reference TU) are determined as NACK.
  • a certain time period e.g, a reference TU
  • the base station transmits a downlink signal including the PDSCH related to the channel access priority class p on the carrier
  • the HARQ-ACK values corresponding to the PDSCH transmission(s) in the reference subframe k (or reference slot k) are NACK.
  • the base station maintains CW values set for each priority class as initial values.
  • the reference subframe (or reference slot) may be defined as a start subframe (or start slot) in which the most recent signal transmission on a corresponding carrier in which at least some of the HARQ-ACK feedback is available is performed.
  • the base station may perform downlink signal transmission (eg, signal transmission including discovery signal transmission and not including PDSCH) through an unlicensed band based on a second downlink CAP method to be described later.
  • downlink signal transmission eg, signal transmission including discovery signal transmission and not including PDSCH
  • the base station may perform the following CAP to transmit a downlink signal through multiple carriers in an unlicensed band.
  • Type A The base station performs CAP on multi-carriers based on a counter N (counter N considered in CAP) defined for each carrier, and performs downlink signal transmission based on this.
  • Counter N for each carrier is determined independently of each other, and downlink signal transmission through each carrier is performed based on the counter N for each carrier.
  • Counter N for each carrier is determined as an N value for a carrier with the largest contention window size, and downlink signal transmission through a carrier is performed based on a counter N for each carrier.
  • Type B The base station performs a CAP based on counter N only for a specific carrier among a plurality of carriers, and performs downlink signal transmission by determining whether channel idle for the remaining carriers prior to signal transmission on a specific carrier.
  • a single contention window size is defined for a plurality of carriers, and the base station utilizes a single contention window size when performing a CAP based on counter N for a specific carrier.
  • the contention window size is defined for each carrier, and the largest contention window size among the contention window sizes is used when determining the N init value for a specific carrier.
  • the UE performs a contention-based CAP for uplink signal transmission in the unlicensed band.
  • the UE performs a Type 1 or Type 2 CAP to transmit an uplink signal in an unlicensed band.
  • the terminal may perform a CAP (eg, Type 1 or Type 2) set by the base station for uplink signal transmission.
  • 19 is a flowchart of a type 1 CAP operation of a terminal for transmitting an uplink signal.
  • the terminal may initiate a channel access procedure (CAP) for signal transmission through an unlicensed band (S1510).
  • the terminal may randomly select the backoff counter N within the contention window (CW) according to step 1.
  • the N value is set to the initial value N init (S1520).
  • N init is selected as an arbitrary value from 0 to CW p .
  • the terminal ends the CAP process (S1532).
  • the terminal may perform Tx burst transmission (S1534).
  • the backoff counter value is not 0 (S1530; N)
  • the terminal decreases the backoff counter value by 1 according to step 2 (S1540).
  • the terminal checks whether the channel of the U-cell(s) is in an idle state (S1550), and if the channel is in an idle state (S1550; Y), it checks whether the backoff counter value is 0 (S1530). Conversely, if the channel is not in an idle state in step S1550, that is, if the channel is in a busy state (S1550; N), the terminal has a delay period longer than the slot time (eg, 9usec) according to step 5 (defer duration T d ; 25usec or more) During the period, it is checked whether the corresponding channel is in an idle state (S1560).
  • the slot time eg, 9usec
  • the UE may resume the CAP process again.
  • the delay period may consist of a 16 usec period and m p consecutive slot times (eg, 9 usec) immediately following.
  • the terminal performs step S1560 again to check whether the channel is in the idle state during the new delay period.
  • Table 8 exemplifies that m p , minimum CW, maximum CW, maximum channel occupancy time (MCOT), and allowed CW sizes applied to the CAP vary according to the channel access priority class. .
  • the contention window size applied to the Type 1 uplink CAP may be determined based on various methods. As an example, the contention window size may be adjusted based on whether to toggle a New Data Indicator (NDI) value for at least one HARQ processor related to HARQ_ID_ref, which is the HARQ process ID of the UL-SCH within a certain time period (eg, a reference TU). have.
  • NDI New Data Indicator
  • the terminal performs signal transmission using the Type 1 channel access procedure related to the channel access priority class p on the carrier, the terminal all priority classes when the NDI value for at least one HARQ process related to HARQ_ID_ref is toggled. for, Set to, and if not, all priority classes Increase the CWp for the next higher allowed value.
  • the reference subframe nref (or reference slot nref) is determined as follows.
  • the UE receives the UL grant in a subframe (or slot) ng and a subframe (or slot)
  • a subframe or slot
  • the UE transmits UL-SCH based on the Type 1 CAP
  • Subframe (or slot) is the most recent subframe (or slot) before ng-3)
  • the reference subframe (or slot) nref is the subframe (or slot) n0.
  • an uplink signal (eg, a signal including a PUSCH)
  • the terminal is at least a sensing interval Immediately after sensing that the channel is idle during, an uplink signal (eg, a signal including a PUSCH) may be transmitted through an unlicensed band.
  • Tshort_ul is one slot section Immediately followed Consists of Tf includes an idle slot period Tsl at the starting point of the Tf.
  • the base station transmits a related signal to the terminal through a downlink channel to be described later, and the terminal receives a related signal from the base station through a downlink channel to be described later.
  • PDSCH Physical downlink shared channel
  • the PDSCH carries downlink data (e.g., DL-shared channel transport block, DL-SCH TB), and modulation methods such as Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), 64 QAM, and 256 QAM are used. Apply.
  • a codeword is generated by encoding TB.
  • the PDSCH can carry up to two codewords. Scrambling and modulation mapping are performed for each codeword, and modulation symbols generated from each codeword are mapped to one or more layers (Layer mapping). Each layer is mapped to a resource together with a demodulation reference signal (DMRS) to generate an OFDM symbol signal, and is transmitted through a corresponding antenna port.
  • DMRS demodulation reference signal
  • the PDCCH carries downlink control information (DCI) and a QPSK modulation method is applied.
  • DCI downlink control information
  • One PDCCH is composed of 1, 2, 4, 8, 16 Control Channel Elements (CCEs) according to the Aggregation Level (AL).
  • CCE consists of 6 REGs (Resource Element Group).
  • REG is defined by one OFDM symbol and one (P)RB.
  • D represents a resource element (RE) to which DCI is mapped
  • R represents an RE to which DMRS is mapped.
  • the DMRS is mapped to the 1st, 5th, and 9th REs in the frequency domain direction within one symbol.
  • CORESET is defined as a REG set with a given pneumonology (eg, SCS, CP length, etc.).
  • a plurality of OCRESETs for one terminal may overlap in the time/frequency domain.
  • CORESET may be set through system information (eg, MIB) or UE-specific higher layer (eg, Radio Resource Control, RRC, layer) signaling.
  • RRC Radio Resource Control
  • the number of RBs constituting CORESET and the number of symbols (maximum 3) may be set by higher layer signaling.
  • the precoder granularity in the frequency domain for each CORESET is set to one of the following by higher layer signaling:
  • REGs in CORESET are numbered based on a time-first mapping manner. That is, REGs are numbered sequentially from 0 starting from the first OFDM symbol in the lowest-numbered resource block inside the CORESET.
  • the mapping type from CCE to REG is set to one of a non-interleaved CCE-REG mapping type or an interleaved CCE-REG mapping type.
  • FIG. 21 illustrates a non-interleaved CCE-REG mapping type
  • FIG. 22 illustrates an interleaved CCE-REG mapping type.
  • Non-interleaved CCE-REG mapping type (or localized mapping type): 6 REGs for a given CCE constitute one REG bundle, and all REGs for a given CCE are contiguous. One REG bundle corresponds to one CCE
  • CCE-REG mapping type (or Distributed mapping type): 2, 3, or 6 REGs for a given CCE constitute one REG bundle, and the REG bundles are interleaved in CORESET.
  • the REG bundle in the CORESET consisting of 1 OFDM symbol or 2 OFDM symbols consists of 2 or 6 REGs
  • the REG bundle in the CORESET consisting of 3 OFDM symbols consists of 3 or 6 REGs.
  • REG bundle size is set for each CORESET
  • the number of rows (A) of the (block) interleaver for the above interleaving operation is set to one of 2, 3, and 6.
  • the number of columns of the block interleaver is equal to P/A.
  • a write operation for the block interleaver is performed in a row-first direction, and a read operation is performed in a column-first direction.
  • Cyclic shift (CS) in an interleaving unit is applied based on an ID that can be set independently for an ID that can be set for DMRS.
  • the UE acquires DCI transmitted through the PDCCH by performing decoding (aka, blind decoding) on the set of PDCCH candidates.
  • the set of PDCCH candidates decoded by the UE is defined as a PDCCH search space set.
  • the search space set may be a common search space or a UE-specific search space.
  • the UE may acquire DCI by monitoring PDCCH candidates in one or more search space sets configured by MIB or higher layer signaling.
  • Each CORESET setting is associated with one or more sets of search spaces, and each set of search spaces is associated with one COREST setting.
  • One set of search spaces is determined based on the following parameters.
  • controlResourceSetId Represents a set of control resources related to the search space set.
  • -monitoringSymbolsWithinSlot indicates the PDCCH monitoring pattern in the slot for PDCCH monitoring (eg, indicates the first symbol(s) of the control resource set)
  • Table 9 exemplifies features of each search space type.
  • Table 10 exemplifies DCI formats transmitted through PDCCH.
  • DCI format 0_0 is used to schedule TB-based (or TB-level) PUSCH
  • DCI format 0_1 is TB-based (or TB-level) PUSCH or CBG (Code Block Group)-based (or CBG-level) PUSCH
  • DCI format 1_0 is used to schedule TB-based (or TB-level) PDSCH
  • DCI format 1_1 is used to schedule TB-based (or TB-level) PDSCH or CBG-based (or CBG-level) PDSCH I can.
  • DCI format 2_0 is used to deliver dynamic slot format information (eg, dynamic SFI) to the terminal
  • DCI format 2_1 is used to deliver downlink pre-Emption information to the terminal.
  • DCI format 2_0 and/or DCI format 2_1 may be delivered to terminals in a corresponding group through a group common PDCCH, which is a PDCCH delivered to terminals defined as one group.
  • the terminal transmits a related signal to the base station through an uplink channel to be described later, and the base station receives a related signal from the terminal through an uplink channel to be described later.
  • PUSCH Physical uplink shared channel
  • PUSCH carries uplink data (e.g., UL-shared channel transport block, UL-SCH TB) and/or uplink control information (UCI), and CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform Alternatively, it is transmitted based on a DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing) waveform.
  • DFT-s-OFDM Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing
  • PUSCH may be transmitted based on a waveform or a DFT-s-OFDM waveform.
  • PUSCH transmission is dynamically scheduled by the UL grant in the DCI or is semi-static based on higher layer (e.g., RRC) signaling (and/or Layer 1 (L1) signaling (e.g., PDCCH)). Can be scheduled (configured grant).
  • PUSCH transmission may be performed based on a codebook or a non-codebook.
  • PUCCH carries uplink control information, HARQ-ACK and/or scheduling request (SR), and is divided into Short PUCCH and Long PUCCH according to the PUCCH transmission length.
  • Table 11 illustrates PUCCH formats.
  • PUCCH format 0 carries UCI of a maximum size of 2 bits, and is mapped and transmitted on a sequence basis. Specifically, the terminal transmits a specific UCI to the base station by transmitting one of the plurality of sequences through the PUCCH of PUCCH format 0. The UE transmits a PUCCH of PUCCH format 0 within a PUCCH resource for SR configuration corresponding to only when transmitting a positive SR.
  • PUCCH format 1 carries UCI of a maximum size of 2 bits, and the modulation symbol is spread by an orthogonal cover code (OCC) (set differently depending on whether or not frequency hopping) in the time domain.
  • OCC orthogonal cover code
  • the DMRS is transmitted in a symbol in which a modulation symbol is not transmitted (that is, it is transmitted after time division multiplexing (TDM)).
  • PUCCH format 2 carries UCI of a bit size larger than 2 bits, and a modulation symbol is transmitted after DMRS and frequency division multiplexing (FDM).
  • the DM-RS is located at symbol indexes #1, #4, #7 and #10 in a given resource block with a density of 1/3.
  • a PN (Pseudo Noise) sequence is used for the DM_RS sequence. Frequency hopping may be activated for 2-symbol PUCCH format 2.
  • PUCCH format 3 does not perform multiplexing of terminals within the same physical resource blocks, and carries UCI with a bit size larger than 2 bits.
  • the PUCCH resource of PUCCH format 3 does not include an orthogonal cover code.
  • the modulation symbols are transmitted after DMRS and TDM (Time Division Multiplexing).
  • PUCCH format 4 supports multiplexing of up to 4 terminals in the same physical resource block, and carries UCI with a bit size larger than 2 bits.
  • the PUCCH resource of PUCCH format 3 includes an orthogonal cover code.
  • the modulation symbols are transmitted after DMRS and TDM (Time Division Multiplexing).
  • PC Power Control
  • the transmission power control method is a requirement (e.g., Signal-to-Noise Ratio (SNR), Bit Error Ratio (BER)), Block Error Ratio (BLER) of a base station (e.g., gNB, eNB, etc.) Etc.).
  • SNR Signal-to-Noise Ratio
  • BER Bit Error Ratio
  • BLER Block Error Ratio
  • Power control as described above may be performed by an open-loop power control method and a closed-loop power control method.
  • the open-loop power control method is a method of controlling transmission power without feedback from a transmitting device (eg, a base station) to a receiving device (eg, a terminal, etc.) and/or feedback from the receiving device to the transmitting device.
  • a transmitting device eg, a base station
  • a receiving device eg, a terminal, etc.
  • the terminal may receive a specific channel/signal from the base station and estimate the strength of the received power by using this. Thereafter, the terminal may control the transmission power by using the estimated strength of the received power.
  • the closed loop power control method refers to a method of controlling transmission power based on feedback from a transmitting device to a receiving device and/or feedback from a receiving device to a transmitting device.
  • the base station receives a specific channel/signal from the terminal, and the optimal power level of the terminal based on the power level, SNR, BER, BLER, etc. measured by the received specific channel/signal. To decide.
  • the base station transmits information (ie, feedback) on the determined optimal power level to the terminal through a control channel or the like, and the terminal can control the transmission power using the feedback provided by the base station.
  • a power control scheme for transmission of an uplink data channel eg, a physical uplink shared channel (PUSCH)
  • PUSCH physical uplink shared channel
  • a transmission occasion (ie, a transmission time unit) for the PUSCH ( i) can be defined by the slot index (n_s) in the frame of the system frame number (SFN), the first symbol in the slot (S), the number of consecutive symbols (L), etc. have.
  • the terminal In the case of PUSCH transmission in the active uplink bandwidth part (UL bandwidth part, UL BWP) of the carrier (f) of the serving cell (c), the terminal is determined by Equation 1 below. A linear power value of the determined transmission power may be calculated. Thereafter, the corresponding terminal may control the transmission power by considering the calculated linear power value in consideration of the number of antenna ports and/or the number of SRS ports.
  • the UE activates the carrier (f) of the serving cell (c) by using the parameter set configuration based on index j and the PUSCH power control adjustment state based on index l
  • the UE transmits PUSCH transmission power at the PUSCH transmission opportunity (i) based on Equation P1 below. (dBm) can be determined.
  • index j is an open-loop power control parameter (e.g., Po, alpha, ), etc.), and a maximum of 32 parameter sets can be set per cell.
  • Index q_d is the path loss (PL) measurement (e.g. Represents the index of the DL RS resource for ), and up to 4 measurements per cell can be set.
  • Index l represents an index for a closed loop power control process, and up to two processes may be set per cell.
  • Po for example:
  • the Po value may be set in consideration of the throughput of the terminal, the capacity of the cell, noise, and/or interference.
  • alpha e.g.
  • Alpha may be set to a value from 0 to 1, and full pathloss compensation or fractional pathloss compensation may be performed according to the set value.
  • the alpha value may be set in consideration of interference and/or data rate between terminals.
  • the set UE transmission power may be interpreted as'configured maximum UE output power' defined in 3GPP TS 38.101-1 and/or TS38.101-2.
  • Is the subcarrier spacing ( ) May indicate a bandwidth of PUSCH resource allocation expressed as the number of resource blocks (RBs) for a PUSCH transmission opportunity.
  • related to the PUSCH power control adjustment state May be set or indicated based on the TPC command field of DCI (eg, DCI format 0_0, DCI format 0_1, DCI format 2_2, DCI format2_3, etc.).
  • a specific Radio Resource Control (RRC) parameter (e.g., SRI-PUSCHPowerControl-Mapping, etc.) is the linkage between the SRS Resource Indicator (SRI) field of downlink control information (DCI) and the indexes j, q_d, and l described above. ) Can be represented.
  • the aforementioned indexes j, l, q_d, etc. may be associated with a beam, a panel, and/or a spatial domain transmission filter, based on specific information.
  • PUSCH transmission power control in units of beams, panels, and/or spatial domain transmission filters may be performed.
  • parameters and/or information for PUSCH power control may be individually (ie, independently) set for each BWP.
  • the corresponding parameters and/or information may be set or indicated through higher layer signaling (eg, RRC signaling, Medium Access Control-Control Element (MAC-CE), etc.) and/or DCI.
  • RRC signaling e.g, RRC signaling, Medium Access Control-Control Element (MAC-CE), etc.
  • MAC-CE Medium Access Control-Control Element
  • parameters and/or information for PUSCH power control may be delivered through RRC signaling PUSCH-ConfigCommon, PUSCH-PowerControl, etc.
  • PUSCH-ConfigCommon and PUSCH-PowerControl may be set as shown in Table 12 below.
  • the UE can determine or calculate the PUSCH transmission power, and can transmit the PUSCH using the determined or calculated PUSCH transmission power.
  • a user equipment may receive a parameter and/or information related to a transmission power (Tx power) from a base station (S2405).
  • the terminal may receive corresponding parameters and/or information through higher layer signaling (eg, RRC signaling, MAC-CE, etc.).
  • higher layer signaling eg, RRC signaling, MAC-CE, etc.
  • the terminal may receive parameters and/or information related to transmission power control (eg, Table 12).
  • the terminal may receive a TPC command related to transmission power from the base station (S2410).
  • the UE may receive the corresponding TPC command through lower layer signaling (eg, DCI).
  • DCI lower layer signaling
  • the terminal may receive information on a TPC command to be used for determining a power control adjustment state, etc. through a TPC command field of a predefined DCI format.
  • this step may be omitted.
  • the terminal may determine (or calculate) transmission power for uplink transmission based on parameters, information, and/or TPC commands received from the base station (S2415).
  • the UE may determine the PUSCH transmission power based on the above-described scheme (eg, Equation 1). And/or, when two or more uplink channels and/or signals need to be transmitted by overlapping, such as in a situation such as carrier aggregation, the terminal transmits for uplink transmission in consideration of priority order, etc. Power can also be determined.
  • one or more uplink channels and/or signals may be transmitted (S2420).
  • one or more uplink channels and/or signals eg, PUSCH, PUCCH, SRS, PRACH, etc.
  • the types of the terminal's power headroom report are as follows.
  • Type 1 UE power headroom (PH) is valid for the PUSCH transmission opportunity i in the uplink bandwidth part (BWP) b of the carrier f of the serving cell c.
  • the type 3 UE power headroom (PH) is valid for the SRS transmission opportunity i in the uplink bandwidth part (BWP) b of the carrier f of the serving cell c.
  • the UE (i) considers the received downlink control information until the power headroom report is triggered, and (ii) after the power headroom report is triggered, in a new data indicator field of DCI format 0_0 or DCI format 0_1 As determined by, the power headroom for the activated serving cell [11, TS38.321] is included by including a PDCCH monitoring opportunity for the first time detection of DCI format 0_0 or DCI format 0_1 in which the UE schedules initial transmission of a transport block. Determine whether the report is based on actual transmission or reference format.
  • the UE When the UE is configured with SCG (Secondary Cell Group),
  • the'serving cell' shall mean a serving cell included in the MCG.
  • the “serving cell” shall mean a cell included in the SCG.
  • the “primary cell” refers to the PSCell of the SCG.
  • PUCCH-SCell Secondary Cell
  • the'serving cell' is assumed to mean a serving cell included in the primary PUCCH group.
  • the'serving cell' is assumed to mean a cell included in the secondary PUCCH group.
  • the "primary cell” is assumed to mean the PUCCH-SCell of the secondary PUCCH group.
  • the UE determines that the type 1 power headroom report for the activated serving cell is based on actual PUSCH transmission, for the PUSCH transmission opportunity i in the active uplink bandwidth part (BWP) b of the carrier f of the serving cell c, The UE calculates the type 1 power headroom report as shown in the following equation.
  • Is the maximum output power set by the UE Is the bandwidth of PUSCH resource allocation expressed by the number of resource blocks, Is a downlink path loss estimate (dB) calculated by the UE using the reference signal index q d for the active downlink bandwidth part, Is a PUSCH power control adjustment state.
  • silver Can be given by higher layer signals.
  • UE receives multiple cells for PUSCH transmission, and subcarrier spacing configuration in active UL BWP b1 of carrier f1 of serving cell c1 Subcarrier spacing setting in active UL BWP b2 of carrier f2 of this serving cell c2 If smaller, and when UR provides a type 1 power headroom report of PUSCH transmission in a slot on UL BWP b1 that overlaps with multiple slots on UL BWP b2, the UE completely overlaps with the slot on UL BWP b1. Provides a type 1 power headroom report for the first slot of multiple slots on UL BWP b2.
  • the UE When the UE has configured multiple cells for PUSCH transmission, in the following cases, the UE transmits the initial transmission of a transport block on the active UL BWP b1 of the carrier f1 of the serving cell c1, and the serving cell c2 overlapping the first PUSCH transmission. In the first PUSCH transmission including the second PUSCH transmission on the UL BWP b2 of the carrier f2, the UE does not consider the calculation of the type 1 power headroom report.
  • the UE determines that the type 1 power headroom report for the activated serving cell is based on the reference PUSCH transmission, at that time, for the PUSCH transmission opportunity i on the UL BWP b of the carrier f of the serving cell c, the UE is type 1 Calculate the power headroom report as shown in the following equation.
  • the UE When the UE receives two UL carriers configured for the serving cell, and the UE determines that the type 1 power headroom report for the serving cell is based on the reference PUSCH transmission, the UE is provided by the upper layer parameter pusch-Config. A type 1 power headroom report for a serving cell is calculated assuming reference PUSCH transmission on the UL carrier.
  • the UE When the UE receives the upper layer parameter pusch-Config for all UL carriers, the UE assumes transmission of the reference PUSCH on the UL carrier provided by the higher layer parameter pusch-Config, and the type 1 power headroom for the serving cell Calculate the report.
  • the UE calculates a type 1 power headroom report for the serving cell assuming transmission of a reference PUSCH on a non-supplementary UL carrier.
  • the UE may calculate a type 3 power headroom report as shown in the following equation.
  • the UE may calculate a type 3 power headroom report as shown in the following equation.
  • Discontinuous Reception refers to an operation mode in which the UE can reduce battery consumption so that the UE can discontinuously receive a downlink channel. That is, the UE in which DRX is configured can reduce power consumption by discontinuously receiving the DL signal.
  • the DRX operation is performed in a DRX cycle indicating a time interval in which On Duration is periodically repeated, and the DRX cycle includes On Duration and a sleep period (or Opportunity for DRX).
  • On Duration represents a time period during which the UE monitors to receive the PDCCH.
  • DRX may be performed in a Radio Resource Control (RRC)_IDLE state (or mode), an RRC_INACTIVE state (or mode), or an RRC_CONNECTED state (or mode). In the RRC_IDLE state and RRC_INACTIVE state, the DRX is used to receive paging signals discontinuously.
  • RRC Radio Resource Control
  • -RRC_Idle state a state in which a radio connection (RRC connection) is not established between the base station and the UE.
  • RRC connection A wireless connection (RRC connection) is established between the base station and the UE, but the wireless connection is inactive (inactivation).
  • -RRC_Connected state A state in which a radio connection (RRC connection) is established between the base station and the UE.
  • DRX is largely divided into Idle mode DRX, Connected DRX (C-DRX) and extended DRX, and DRX applied in IDLE state is called Idle mode DRX, and DRX applied in CONNECTED state is called Connected mode DRX (C-DRX).
  • eDRX Extended/enhanced DRX
  • eDRX Extended/enhanced DRX
  • the SIB1 may include an eDRX-Allowed parameter, and the eDRX-Allowed parameter is a parameter indicating whether Idle mode extended DRX is allowed.
  • One paging occasion is a subframe that can be transmitted on a P-RNTI (Paging-Radio Network Temporary Identifier) PDCCH or MPDCCH, or NPDCCH addressing a paging message for NB-IoT.
  • P-RNTI Paging-Radio Network Temporary Identifier
  • MPDCCH Physical Downlink Control Channel
  • NPDCCH PNDCCH addressing a paging message for NB-IoT.
  • P-RNTI transmitted on the MPDCCH indicates the start subframe of the MPDCCH repetition.
  • P-RNTI transmitted on the NPDCCH indicates the start subframe of NPDCCH repetition if the subframe determined by the PO is not a valid NB-IoT downlink subframe. Then, the first valid NB-IoT downlink subframe after PO is the start subframe of NPDCCH repetition.
  • PF paging frame
  • PNB paging narrowband
  • 25 is a flowchart illustrating an example of a method of performing an idle mode DRX operation.
  • the UE receives Idle mode DRX configuration information from the base station through higher layer signaling (eg, system information) (S2510).
  • higher layer signaling eg, system information
  • the UE determines a paging frame (PF) for monitoring a physical downlink control channel (eg, PDCCH) in a paging DRX cycle based on the Idle mode DRX configuration information and a Paging Occasion (PO) in the PF (S2520).
  • PF paging frame
  • the DRX cycle includes an On Duration and a sleep period (or Opportunity for DRX).
  • the UE monitors the PDCCH in the PO of the determined PF (S2530).
  • the UE monitors only one subframe (PO) per paging DRX Cycle.
  • the UE may transition to a connected mode to transmit and receive data with the base station.
  • 26 is a diagram showing an example of an idle mode DRX operation.
  • paging occurs to the UE.
  • the UE wakes up periodically, that is, every (paging) DRX Cycle, and monitors the PDCCH. If there is paging, it transitions to the connected state and receives data. If there is no paging, it enters sleep mode again.
  • C-DRX Connected mode DRX
  • C-DRX is a DRX applied in the RRC Connected state, and the DRX cycle of C-DRX may be composed of a short DRX cycle and/or a long DRX cycle. Short DRX cycle is optional.
  • the UE performs PDCCH monitoring during On Duration. If there is a PDCCH successfully detected during PDCCH monitoring, the UE operates an inactivity timer and maintains an awake state. On the other hand, if there is no PDCCH successfully detected during PDCCH monitoring, the UE enters a sleep state after the On Duration ends.
  • a PDCCH reception opportunity (eg, a slot having a PDCCH search space) may be set discontinuously according to the C-DRX configuration.
  • a PDCCH reception opportunity (eg, a slot having a PDCCH search space) may be continuously set.
  • PDCCH monitoring may be restricted in a time period set as a measurement gap.
  • FIG. 27 is a flowchart illustrating an example of a method of performing a C-DRX operation.
  • the UE receives RRC signaling (eg, MAC-MainConfig IE) including DRX configuration information from the base station (S2710).
  • RRC signaling eg, MAC-MainConfig IE
  • DRX configuration information may include the following information.
  • -drx-InactivityTimer Number of PDCCH subframes to be continuously monitored when UE decodes PDCCH with scheduling information
  • -drxStartOffset the subframe number where the DRX cycle starts
  • -shortDRX-Cycle DRX Cycle that operates as many times as drxShortCycleTimer when Drx-InactivityTimer ends
  • the UE monitors the PDCCH during the ON duration of the DRX cycle based on the DRX configuration (S2730).
  • the UE when the UE receives scheduling information (eg, DL Grant) in the RRC_Connected state (hereinafter, the Connected state), the UE drives the DRX inactivity timer and the RRC inactivity timer.
  • scheduling information eg, DL Grant
  • the RRC_Connected state hereinafter, the Connected state
  • the DRX mode starts, and the UE wakes up in a DRX cycle period and monitors the PDCCH for a predetermined time (on duration timer).
  • a predetermined time on duration timer.
  • the UE first starts with a short DRX cycle when starting the DRX mode, and when the short DRX cycle ends, it moves to the long DRX cycle.
  • the long DRX cycle is a multiple of the short DRX cycle, and in the short DRX cycle, the UE wakes up more often.
  • the RRC inactivity timer expires, the UE transitions to the idle state and performs the idle mode DRX operation.
  • 29 is a diagram illustrating an example of power consumption according to a state of a UE.
  • the UE After the UE is powered on (Power On), the UE performs an initial access/random access procedure for synchronizing downlink and uplink synchronization with a base station and a boot up for application loading,
  • the current (or power consumption) consumed while performing a registration procedure with the network and the like and performing each procedure is as shown in FIG. 29.
  • the transmission power of the UE When the transmission power of the UE is high, the current consumption of the UE increases.
  • the UE transitions to the idle mode to reduce power consumption and performs the idle mode DRX operation.
  • the UE transitions from the idle mode to the connected mode through a cell establishment procedure to transmit and receive data with the base station.
  • the UE performs a connected mode DRX (C-DRX) operation when there is no data transmitted/received with the base station for a specific time or at a set time.
  • C-DRX connected mode DRX
  • the UE when the UE is configured with extended DRX (eDRX) through higher layer signaling (eg, system information), the UE may perform an eDRX operation in an idle mode or a connected mode.
  • eDRX extended DRX
  • higher layer signaling eg, system information
  • 3GPP is developing a standard that adds a listen before talk (LBT) operation, etc., so that the 5G NR system can operate in an unlicensed band, that is, the NR-U system standard.
  • the gNB gives the UE a physical uplink shared channel (PUSCH)/physical uplink control channel (PUCCH)/physical random access channel: PRACH/
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • PRACH Physical random access channel
  • SRS sounding reference signal
  • the UE attempts the LBT operation at the start timing (time point) of each candidate time resource from the first candidate time resource (the candidate resource that is the most temporally advanced among the plurality of candidate time resources), and the LBT operation is performed on one time resource that succeeds in LBT
  • the corresponding signal transmission can be performed only for the target.
  • a plurality of signal transmissions may be performed for a plurality of time resources that succeed in LBT.
  • the term "scheduled" by the gNB means i) allows the UE to perform transmission according to a specific rule, or ii) transmits through RRC configuration or MAC signaling. It can be triggered, or iii) dynamic scheduling through DCI.
  • the UE When a plurality of UL carriers are configured for the UE, and UL signal transmission for each carrier can be scheduled, the UE generally follows from the viewpoint of UL power control or UL power headroom (PH) reporting. Perform the same operation.
  • the UE transmits a UL signal through a plurality of carriers at a certain point in time, when the sum of the powers of the signals transmitted at the certain point in time exceeds a specific maximum transmission power value, part of the signal or The maximum transmission power value is not exceeded by adjusting the total transmission power or abandoning the transmission of part of the signal.
  • the UE In the PH reporting operation of the UE, when the UE reports the PH for a certain carrier (the arbitrary carrier or another carrier) to the base station through a PUSCH transmitted to a certain carrier at a certain point in time, the UE transmits a UL signal. For a carrier that does not transmit, a virtual PH value assuming that a physical channel conforming to an arbitrary reference format is transmitted in the corresponding carrier is reported to the base station.
  • the UE when a UE transmits a UL signal through a plurality of carriers and reports a PH for a certain carrier to a base station through a PUSCH transmitted on a certain carrier among the plurality of carriers, the UE The calculated PH value for may be calculated by reflecting the format (transmission power, transmission frequency position, etc.) of UL signals transmitted to other carriers.
  • view point may be divided into a slot or a slot group, a symbol, or a symbol group unit in the NR.
  • the UE reports the PH means that the UE reports the calculated PH to the base station.
  • the present invention proposes methods for solving this problem. Specifically, a method of adjusting UL transmission power according to a maximum power limitation in a plurality of carriers (method 1), and a method of reporting a PH when UL transmission in a plurality of carriers (method 2) will be described in order.
  • FIG. 30 is a diagram illustrating an example of a method for adjusting UL transmission power according to a maximum power limitation in a plurality of carriers proposed in the present specification.
  • carrier B 3010 is a carrier in an unlicensed band
  • carrier A 3020 is a carrier in a licensed band.
  • the UE is scheduled to transmit the PUSCH B 3011 or 3012 through the resource that succeeded in LBT among the two candidate resources of the time t1 3060 and the time t2 3070 for the carrier B 3010.
  • the UE is scheduled to transmit the PUSCH A1 3021 at the time t1 3060 and the PUSCH A2 3022 at the time t2 3070 for the carrier A 3020, respectively.
  • t_a1 (3030) is a time when PUSCH A1 (3021) is scheduled
  • t_a2 (3040) is a time when PUSCH A2 (3022) is scheduled
  • t_b (3050) is a time when PUSCH B (3011 to 3012) is scheduled.
  • the UE does not know when to actually transmit the PUSCH B 3011 or 3012 before performing the LBT operation at t1 3060 and t2 3070, respectively. Accordingly, the UE knows in advance whether the total transmission power of the UE will exceed the maximum transmission power at each of t1 3060 and t2 3070, and if it exceeds, how much it will exceed. In addition, it may be difficult for the UE to determine whether to give up some transmission or adjust the transmission power of PUSCH B 3011 or 3012 and PUSCH A1 3021 or PUSCH A2 3022 through this.
  • the UE calculates the total transmission power in each time resource.
  • the UE proposes the following schemes to determine whether to abandon UL transmission in an arbitrary carrier or adjust the transmission power of each carrier at each time point based on this.
  • the UE assumes that, among a plurality of time resources scheduled for transmitting one UL signal, i) the UL signal is transmitted only for time resources in which the UL signal is transmitted after actually successfully LBT , ii) For the remaining time resources in which the UL signal is not transmitted, it is assumed that the UL signal is not transmitted, and the total transmission power at each scheduled resource time point may be calculated.
  • the UE when the UE applies the scheme of (Proposal 1-1) to the transmission power control, the UE considers whether the LBT succeeds at t1 (3060) and PUSCH A2 (3022) at t2 (3070) Since the transmission power needs to be determined, there is a disadvantage that a fast processing time is required for the calculation and setting of the transmission power of the UE. On the other hand, there is an advantage that the UE may unnecessarily reduce the UL transmission power or not give up UL transmission.
  • the method of (Proposal 1-2) has a disadvantage in that the UE should reduce the UL transmission power or abandon UL transmission even when the actual total transmission power does not exceed the maximum transmission power. It has the advantage of not requiring fast processing time.
  • the UE when the UE applies the scheme of (Proposal 1-3) to the transmission power adjustment, the UE succeeds in LBT in the carrier B 3010 at time t1 3060 and transmits the PUSCH B 3011 If successful, when the time point t2 (3070) is separated from the time point t1 (3060) by a sufficient time interval (T) or more for the UE to calculate and set the UL transmission power, the UE at t2 (3070) PUSCH B (3012) It is assumed that) is not transmitted, and the total transmit power can be calculated.
  • T sufficient time interval
  • the UE is triggered internally by the UE to report the power headroom (PH) at a certain point in time t_ph i) by gNB or ii) by a predetermined rule, and the corresponding PH is set at time t_i (t_i > t_ph, that is, t_i is a time point after t_ph.)
  • the UE calculates and reports a PH value considering UL signals transmitted from each carrier at time t_i.
  • the UE calculates the PH value without considering the UL signal scheduled to be transmitted before the triggered time t_ph, even if the UL signal transmitted at time t_i is considered in consideration of the time required for processing for PH calculation. do.
  • the UE When the UE is triggered to report the PH by the gNB, the UE may receive a downlink signal indicating to trigger the PH report from the gNB on the non-licensed band carrier.
  • the UE receives the LAA SCell for uplink transmission, and the UE includes DCI format 0A/0B/4A/4B having a PUSCH trigger A set to 0 corresponding to PUSCH transmission on the LAA SCell of subframe i.
  • the UE is the LAA SCell in subframe i regardless of whether the UE can access the LAA SCell for PUSCH transmission in subframe i according to the channel access procedure. Power headroom for subframe i is calculated on the assumption that PUSCH transmission is performed through
  • the content related to the PH for the unlicensed band carrier (or LAA SCell) described above may be applied in the same manner to the proposals (2-1) to (2-6) to be described later, or may be modified according to the characteristics of the proposal.
  • PHs for each of a plurality of different carriers set in the UE may be associated with each other.
  • the UE performs transmission power adjustment to perform uplink transmission, and the UE may adjust the transmission power by applying a maximum power reduction (MPR) applied to the total transmission power for a plurality of carriers.
  • MPR may mean an allowable value for the UE to reduce the maximum power of the UE.
  • the MPR may be determined according to the shape of a PUSCH/PUCCH scheduled for a plurality of carriers. In addition, the MPR may be determined based on a plurality of factors including a PUSCH modulation order or RB allocation.
  • the MPR in an arbitrary subframe may be determined by the maximum distance of PUSCH/PUCCH RBs scheduled for a plurality of aggregated carriers.
  • the MPR is determined by the largest modulation order among different PUSCH/PUCCHs scheduled for the plurality of carriers. Can be determined.
  • the MPR is used to calculate the actual transmit power (Pcmax,c) of the UE, and may be used to calculate the PHR of the UE.
  • 31 and 32 are diagrams showing an example of a method for reporting PH when UL transmission is performed on a plurality of carriers proposed in the present specification.
  • 31 and 32 illustrate a case in which a UE transmits a PH (PH report) through a PUSCH transmitted on a carrier A, which is a carrier of a licensed band.
  • the UE uses PUSCH B (3111 or 3112, 3111 or 3112) through a resource that succeeds in LBT among two candidate resources at time t1 (3160, 3250) and time t2 (3170, 3270) for carrier B (3110, 3210). 3211 or 3212).
  • PUSCH A1 3121, 3221
  • PUSCH A2 3122, 3222
  • time t2 3170, 3270.
  • the UE was triggered at time t_ph_a1 (3140, 3240) to report the PH from PUSCH A1 (3121, 3221) (receives a PH report trigger indication).
  • the UE is triggered at time t_ph_a2 (3150, 3260) to report the PH from PUSCH A2 (3122, 3222) (receives a PH report trigger indication).
  • the UE reports the PH through i) PUSCH A1 (3121, 3221) or ii) PH through PUSCH A2 (3122, 3222)
  • PH is calculated on the assumption that PUSCH B (3111 or 3112, 3211 or 3212) is transmitted at the corresponding time point (ie, the time when PH is reported).
  • Proposal 2-2 Among a plurality of candidate time resources scheduled for transmitting one UL signal, when a UE reports a PH through another carrier at the same time as a random time resource, the UE reports the PH
  • the UE may calculate the PH by assuming that the UL signal is not transmitted at the PH reporting time point.
  • the time point before the specific time may be a time point at which the corresponding PH report is triggered, for example.
  • the The UE assumes that the UL signal is transmitted at the time point and may calculate the PH at the time point. This scheme may be useful when a plurality of time resources are allocated for one UL transmission.
  • the UE when the UE reports the PH through PUSCH A1 (3121) or the UE reports the PH through PUSCH A2 (3122), the UE The PH may be calculated on the assumption that PUSCH B 3111 or 3112 is transmitted at the corresponding time point (ie, the time point at which the PH is reported).
  • the UE assumes that PUSCH B is transmitted regardless of whether PUSCH B is actually transmitted at time t1 (3250) and reports the PH (that is, before the time when PH report is triggered, another candidate Since the time resource does not exist).
  • the PH is reported at time t2 (3270)
  • since the time t_ph_a2 (3260) at which the PH is triggered is after the time t1 (3250)
  • the UE is at time t2 In (3270)
  • 33 is a diagram illustrating an example of a PH reporting method when UL transmission is performed on a plurality of carriers proposed in the present specification.
  • FIG. 33 shows a candidate resource capable of transmitting a PUSCH B (3311 or 3312) at a plurality of times t1 (3360) and t2 (3370) in a carrier B 3310, which is an unlicensed band, is scheduled, and the UE is a PUSCH B ( 3311 or 3312) is configured to report PH.
  • the UE When the UE calculates the PH value to be transmitted through the PUSCH B in advance and configures the PUSCH B, the UE performs the corresponding transmission (i.e., reporting the PH to the base station) at any one of time t1 (3360) and t2 (3370). There is a problem you can't know if it will be. To solve this problem, the present specification proposes the following methods.
  • a UE When a UE is configured with a plurality of candidate time resources capable of transmitting one PUSCH and reports a PH through the PUSCH, the UE is the most in time regardless of the time point at which the PUSCH is actually transmitted.
  • the PH may be calculated based on the time point at which the previous candidate time resource is transmitted (ie, the first candidate time resource).
  • the environment in which the method of (Proposal 2-3) can be applied may be an environment with a high probability of LBT success. More specifically, in an environment in which the LBT success probability is high, the probability that the LBT will succeed in the first candidate time resource that is the most advanced among the plurality of candidate time resources is high, so the calculated based on the time when the first candidate time resource is transmitted.
  • the PH can accurately reflect the PH value of the actual UE.
  • a candidate resource that actually transmits the PUSCH is i) is not the first candidate resource in time among the plurality of candidate time resources, or ii) actually transmits the PUSCH.
  • the time interval between the candidate resource immediately preceding the candidate resource is less than a predetermined time interval (T)
  • the UE follows the calculation of the PH to be transmitted from the previous candidate resource. That is, the PH calculated based on the previous candidate resource is reported in the candidate resource actually transmitting the PUSCH.
  • the predetermined time interval T may be a value determined in consideration of the processing time required for the UE's PH calculation, and may be given in a slot unit, a subframe unit, or the like.
  • the UE transmits PUSCH B at time t2 (3370)
  • t1 (3360) is a time before a certain time interval (T) from t2 (3370)
  • the UE calculates PH based on t2 (3370)
  • the UE calculates the PH based on t1 (3360).
  • the UE transmits PUSCH B at time t2 (3370) and t1 (3360) is a time before a certain time interval (T) from t2 (3370)
  • the UE is based on t1 (3360) t1 (3360).
  • the UE may not recalculate the PH based on the time t1 (3360), but may report the PH value previously calculated based on the time t1 (3360) at the time t2 (3370) (LBT at t2). Is successful).
  • the UE calculates the PH based on t1 (3360).
  • the first calculated PH is all candidate resources present after the candidate resource of t1 (3360) Can be applied to fields.
  • the first calculated PH can be reported at the time t1 (3360) through the PUSCH transmitted at the time t2 (3370), and if the LBT fails even at the time t2 (3370), after the time t2 (3370)
  • the initially calculated PH may be reported through the PUSCH transmitted in the candidate resource of.
  • FIG. 34 is a diagram illustrating an example of an operation implemented in a terminal for performing a method of reporting power headroom (PH) in a wireless communication system proposed in the present specification.
  • PH power headroom
  • the terminal includes a plurality of carriers including a licensed band carrier and an unlicensed band carrier.
  • the PH report for the carriers of is triggered (S3410).
  • the PH report may be triggered based on a rule preset in the terminal or may be triggered by an instruction of the base station.
  • the UE may receive a downlink signal instructing to trigger the PH report from the base station on the non-licensed band carrier.
  • the terminal calculates a PH related to uplink signals transmitted on the plurality of carriers in the first candidate time resource among candidate time resources of the non-licensed band carrier available for the PH report (S3420 ).
  • the calculated PH is a specific candidate time resource that succeeds in listen before talk (LBT) among the candidate time resources, on a physical uplink shared channel (PUSCH) scheduled for the non-licensed band carrier. Can be reported.
  • LBT listen before talk
  • PUSCH physical uplink shared channel
  • the specific candidate time resource may be a candidate time resource in which the LBT first succeeds.
  • the terminal reports the calculated PH to the base station on the non-licensed band carrier (S3430).
  • the terminal may transmit an uplink signal to the base station on a PUSCH scheduled in the licensed band carrier.
  • the uplink signal transmission operation may be performed before S3410, between S3410 and S3430, or after S3430.
  • FIG. 35 is a diagram illustrating an example of an operation implemented in a base station for performing a method of reporting power headroom (PH) in a wireless communication system proposed in the present specification.
  • PH power headroom
  • the base station in a method for a base station to report and receive power headroom (PH) in a wireless communication system, includes a licensed band carrier and an unlicensed band carrier as a terminal. Indicating a trigger (trigger) of the PH report for a plurality of carriers (S3510).
  • the PH report may be triggered based on a rule preset in the terminal.
  • the base station receives the PH from the terminal on the non-licensed band carrier (S3520).
  • the PH is calculated by the terminal based on uplink signals transmitted on the plurality of carriers in the first candidate time resource among candidate time resources of the non-licensed band carrier available for the PH report do.
  • the calculated PH is a specific candidate time resource that succeeds in listen before talk (LBT) among the candidate time resources, on a physical uplink shared channel (PUSCH) scheduled for the non-licensed band carrier. Can be received.
  • LBT listen before talk
  • PUSCH physical uplink shared channel
  • the specific candidate time resource may be a candidate time resource in which the LBT first succeeds.
  • the base station may receive an uplink signal from the terminal on a PUSCH scheduled in the licensed band carrier.
  • the uplink signal reception operation may be performed before S3510, between S3510 and S3520, or after S3520.
  • the methods proposed in the present specification may be performed by an apparatus including one or more memories and one or more processors functionally connected to the one or more memories.
  • the one or more processors include a licensed band carrier and a non-licensed It triggers PH reporting for a plurality of carriers including an unlicensed band carrier.
  • the processors calculate PH related to uplink signals transmitted on the plurality of carriers in the first candidate time resource among candidate time resources of the non-licensed band carrier available for the device to report the PH. Do it.
  • the processors cause the device to report the calculated PH to the base station on the unlicensed band carrier.
  • the methods proposed in the present specification may be performed by one or more instructions that can be executed by one or more processors, stored in a computer readable medium (CRM) that stores one or more instructions.
  • CRM computer readable medium
  • a non-transitory computer readable medium that stores one or more instructions
  • one or more instructions executable by one or more processors are provided by a terminal, a licensed band carrier, and a non-transitory computer readable medium (CRM).
  • -To trigger (trigger) PH report for a plurality of carriers including a licensed band (unlicensed band) carrier.
  • the one or more commands are related to uplink signals transmitted on the plurality of carriers in the first candidate time resource among candidate time resources of the non-licensed band carrier available for the terminal to report the PH. Let's calculate the PH.
  • the one or more commands cause the terminal to report the calculated PH to the base station on the unlicensed band carrier.
  • a communication system 10000 applied to the present invention includes a wireless device, a base station, and a network.
  • the wireless device refers to a device that performs communication using a wireless access technology (eg, 5G NR (New RAT), LTE (Long Term Evolution)), and may be referred to as a communication/wireless/5G device.
  • wireless devices include robots (10000a), vehicles (10000b-1, 10000b-2), eXtended Reality (XR) devices (10000c), hand-held devices (10000d), and home appliances (10000e). ), Internet of Thing (IoT) devices 10000f, and AI devices/servers 40000.
  • the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication.
  • the vehicle may include an Unmanned Aerial Vehicle (UAV) (eg, a drone).
  • UAV Unmanned Aerial Vehicle
  • XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, including HMD (Head-Mounted Device), HUD (Head-Up Display), TV, smartphone, It can be implemented in the form of a computer, wearable device, home appliance, digital signage, vehicle, robot, and the like.
  • Portable devices may include smart phones, smart pads, wearable devices (eg, smart watches, smart glasses), computers (eg, notebook computers, etc.).
  • Home appliances may include TVs, refrigerators, and washing machines.
  • IoT devices may include sensors, smart meters, and the like.
  • the base station and the network may be implemented as a wireless device, and the specific wireless device 20000a may operate as a base station/network node to another wireless device.
  • the wireless devices 10000a to 10000f may be connected to the network 30000 through the base station 20000.
  • AI Artificial Intelligence
  • the network 30000 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network.
  • the wireless devices 10000a to 10000f may communicate with each other through the base station 20000/network 30000, but may communicate directly (e.g. sidelink communication) without passing through the base station/network.
  • the vehicles 10000b-1 and 10000b-2 may perform direct communication (e.g.
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the IoT device eg, sensor
  • the IoT device may directly communicate with other IoT devices (eg, sensors) or other wireless devices 10000a to 10000f.
  • Wireless communication/connections may be established between the wireless devices 10000a to 10000f / base station 20000, and base station 20000 / base station 20000.
  • wireless communication/connection includes various wireless access such as uplink/downlink communication (15000a), sidelink communication (15000b) (or D2D communication), base station communication (15000c) (eg relay, Integrated Access Backhaul (IAB)).
  • IAB Integrated Access Backhaul
  • This can be achieved through technology (eg 5G NR)
  • wireless communication/connection 15000a, 15000b, 15000c
  • wireless communication/connection (15000a, 15000b, 15000c) can transmit/receive signals through various physical channels.
  • various signal processing processes eg, channel encoding/decoding, modulation/demodulation, resource mapping/demapping, etc.
  • resource allocation process may be performed.
  • a first wireless device 32100 and a second wireless device 32200 may transmit and receive wireless signals through various wireless access technologies (eg, LTE and NR).
  • ⁇ the first wireless device 32100, the second wireless device 32200 ⁇ is ⁇ wireless device 10000x, base station 20000 ⁇ and/or ⁇ wireless device 10000x, wireless device 10000x) of FIG. ⁇ Can be matched.
  • the first wireless device 32100 may include one or more processors 32120 and one or more memories 32140, and may further include one or more transceivers 32160 and/or one or more antennas 32180.
  • the processor 32120 controls the memory 32140 and/or the transceiver 32160, and may be configured to implement the description, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document.
  • the processor 32120 may process information in the memory 32140 to generate first information/signal, and then transmit a wireless signal including the first information/signal through the transceiver 32160.
  • the processor 32120 may receive a radio signal including the second information/signal through the transceiver 32160 and then store information obtained from signal processing of the second information/signal in the memory 32140.
  • the memory 32140 may be connected to the processor 32120 and may store various information related to the operation of the processor 32120.
  • the memory 32140 is an instruction for performing some or all of the processes controlled by the processor 32120, or for performing the description, function, procedure, suggestion, method, and/or operation flow chart disclosed in this document. It can store software code including
  • the processor 32120 and the memory 32140 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
  • the transceiver 32160 may be connected to the processor 32120 and transmit and/or receive radio signals through one or more antennas 32180.
  • the transceiver 32160 may include a transmitter and/or a receiver.
  • the transceiver 32160 may be mixed with a radio frequency (RF) unit.
  • the wireless device may mean a communication modem/circuit/chip.
  • the second wireless device 32200 may include one or more processors 32220 and one or more memories 32240, and may further include one or more transceivers 32260 and/or one or more antennas 32280.
  • the processor 32220 controls the memory 32240 and/or the transceiver 32260 and may be configured to implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed herein.
  • the processor 32220 may process information in the memory 32240 to generate third information/signal, and then transmit a wireless signal including the third information/signal through the transceiver 32260.
  • the processor 32220 may receive a radio signal including the fourth information/signal through the transceiver 32260 and then store information obtained from signal processing of the fourth information/signal in the memory 3224.
  • the memory 32240 may be connected to the processor 32220 and may store various information related to the operation of the processor 32220.
  • the memory 32240 is an instruction for performing some or all of the processes controlled by the processor 32220, or performing the description, function, procedure, proposal, method, and/or operation flow chart disclosed in this document. It can store software code including
  • the processor 32220 and the memory 32240 may be part of a communication modem/circuit/chip designed to implement wireless communication technologies (eg, LTE, NR).
  • the transceiver 32260 may be connected to the processor 32220 and transmit and/or receive a radio signal through one or more antennas 32280.
  • the transceiver 32260 may include a transmitter and/or a receiver.
  • the transceiver 32260 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 32120 and 32220.
  • one or more processors 32120 and 32220 may implement one or more layers (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP).
  • the one or more processors 32120 and 32220 may use one or more Protocol Data Units (PDUs) and/or one or more Service Data Units (SDUs) according to the description, functions, procedures, suggestions, methods, and/or operational flow charts disclosed in this document. Can be generated.
  • PDUs Protocol Data Units
  • SDUs Service Data Units
  • One or more processors 32120 and 32220 may generate a message, control information, data, or information according to the description, function, procedure, proposal, method, and/or operation flow chart disclosed in this document.
  • One or more processors 32120 and 32220 generate signals (eg, baseband signals) including PDUs, SDUs, messages, control information, data, or information according to functions, procedures, proposals and/or methods disclosed in this document. , It may be provided to one or more transceivers 32160 and 32260.
  • One or more processors (32120, 32220) may receive signals (eg, baseband signals) from one or more transceivers (32160, 32260), the description, functions, procedures, proposals, methods and / or operation flow chart disclosed in this document.
  • PDUs, SDUs, messages, control information, data, or information may be obtained according to the parameters.
  • the one or more processors 32120 and 32220 may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer.
  • One or more of the processors 32120 and 32220 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
  • the description, functions, procedures, suggestions, methods, and/or operational flow charts 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 description, functions, procedures, proposals, methods, and/or operational flow charts disclosed in this document are included in one or more processors 32120, 32220, or stored in one or more memories 32140, 32240, It may be driven by the above processors 32120 and 32220.
  • the descriptions, functions, procedures, proposals, methods and/or operational flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and/or a set of instructions.
  • One or more memories 32140 and 32240 may be connected to one or more processors 32120 and 32220 and may store various types of data, signals, messages, information, programs, codes, instructions and/or instructions.
  • the one or more memories 32140 and 32240 may be composed of ROM, RAM, EPROM, flash memory, hard drive, register, cache memory, computer-readable storage medium, and/or a combination thereof.
  • the one or more memories 32140 and 32240 may be located inside and/or outside the one or more processors 32120 and 32220.
  • the one or more memories 32140 and 32240 may be connected to the one or more processors 32120 and 32220 through various technologies such as wired or wireless connection.
  • the one or more transceivers 32160 and 32260 may transmit user data, control information, radio signals/channels, and the like mentioned in the methods and/or operation flowcharts of this document to one or more other devices.
  • the one or more transceivers 32160 and 32260 may receive user data, control information, radio signals/channels, etc. mentioned in the description, functions, procedures, proposals, methods and/or operation flowcharts disclosed in this document from one or more other devices. have.
  • one or more transceivers 32160 and 32260 may be connected to one or more processors 32120 and 32220 and may transmit and receive wireless signals.
  • one or more processors 32120 and 32220 may control one or more transceivers 32160 and 32260 to transmit user data, control information, or radio signals to one or more other devices.
  • the one or more processors 32120 and 32220 may control one or more transceivers 32160 and 32260 to receive user data, control information, or radio signals from one or more other devices.
  • one or more transceivers 32160 and 32260 may be connected to one or more antennas 32180 and 32280, and one or more transceivers 32160 and 32260 may be provided with descriptions and functions disclosed in this document through one or more antennas 32180 and 32280.
  • one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
  • One or more transceivers 32160 and 32260 may process the received user data, control information, radio signals/channels, and the like using one or more processors 32120 and 32220. It can be converted into a baseband signal.
  • One or more transceivers 32160 and 32260 may convert user data, control information, radio signals/channels, etc. processed using one or more processors 32120 and 32220 from a baseband signal to an RF band signal.
  • one or more transceivers 32160 and 32260 may include a (analog) oscillator and/or filter.
  • the wireless device may be implemented in various forms according to use-examples/services (see FIG. 36).
  • the wireless devices 4101 and 4102 correspond to the wireless devices 32100 and 32200 of FIG. 37, and various elements, components, units/units, and/or modules It can be composed of (module).
  • the wireless devices 4101 and 4102 may include a communication unit 4110, a control unit 4120, a memory unit 4130, and an additional element 4140.
  • the communication unit may include a communication circuit 4112 and a transceiver(s) 4114.
  • the communication circuit 4112 may include one or more processors 32120 and 32220 and/or one or more memories 32140 and 32240 of FIG. 37.
  • the transceiver(s) 4114 may include one or more transceivers 32160 and 32260 and/or one or more antennas 32180 and 32280 of FIG. 37.
  • the control unit 4120 is electrically connected to the communication unit 4110, the memory unit 4130, and the additional element 4140 and controls all operations of the wireless device.
  • the controller 4120 may control the electrical/mechanical operation of the wireless device based on the program/code/command/information stored in the memory unit 4130.
  • control unit 4120 transmits the information stored in the memory unit 4130 to an external (eg, other communication device) through the communication unit 4110 through a wireless/wired interface, or through the communication unit 4110 to the outside (eg, Information received through a wireless/wired interface from another communication device) may be stored in the memory unit 4130.
  • an external eg, other communication device
  • Information received through a wireless/wired interface from another communication device may be stored in the memory unit 4130.
  • the additional element 4140 may be configured in various ways depending on the type of wireless device.
  • the additional element 4140 may include at least one of a power unit/battery, an I/O unit, a driving unit, and a computing unit.
  • wireless devices include robots (Figs. 36, 10000a), vehicles (Figs. 36, 10000b-1, 10000b-2), XR devices (Figs. 36 and 10000c), portable devices (Figs. 36 and 10000d), and home appliances.
  • Figures 36, 10000e IoT devices
  • Figures 36, 10000f digital broadcasting terminals
  • hologram devices public safety devices
  • MTC devices medical devices
  • fintech devices or financial devices
  • security devices climate/environment devices
  • It may be implemented in the form of an AI server/device (FIGS. 36 and 40000), a base station (FIGS. 36 and 20000), and a network node.
  • the wireless device can be used in a mobile or fixed location depending on the use-example/service.
  • various elements, components, units/units, and/or modules in the wireless devices 4101 and 4102 may be entirely interconnected through a wired interface, or at least some may be wirelessly connected through the communication unit 4110.
  • the controller 4120 and the communication unit 4110 are connected by wire, and the controller 4120 and the first unit (e.g., 4130, 4140) are connected through the communication unit 4110. Can be connected wirelessly.
  • each element, component, unit/unit, and/or module in the wireless devices 4101 and 4102 may further include one or more elements.
  • the control unit 4120 may be configured with one or more processor sets.
  • control unit 4120 may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing processor, and a memory control processor.
  • memory unit 4130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory. volatile memory) and/or a combination thereof.
  • the XR device may be implemented as an HMD, a head-up display (HUD) provided in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, and the like.
  • HMD head-up display
  • a television a television
  • smartphone a smartphone
  • a computer a wearable device
  • a home appliance a digital signage
  • a vehicle a robot, and the like.
  • the XR device 10000c may include a communication unit 4110, a control unit 4120, a memory unit 4130, an input/output unit 4140a, a sensor unit 4140b, and a power supply unit 4140c.
  • blocks 4110 to 4130/4140a to 4140c correspond to blocks 4110 to 4130/4140 of FIG. 38, respectively.
  • the communication unit 4110 may transmit and receive signals (eg, media data, control signals, etc.) with other wireless devices, portable devices, or external devices such as a media server.
  • Media data may include images, images, and sounds.
  • the controller 4120 may perform various operations by controlling components of the XR device 10000c.
  • the controller 4120 may be configured to control and/or perform procedures such as video/image acquisition, (video/image) encoding, metadata generation and processing.
  • the memory unit 4130 may store data/parameters/programs/codes/commands required for driving the XR device 10000c/generating an XR object.
  • the input/output unit 4140a may obtain control information, data, etc. from the outside and may output the generated XR object.
  • the input/output unit 4140a may include a camera, a microphone, a user input unit, a display unit, a speaker, and/or a haptic module.
  • the sensor unit 4140b may obtain XR device status, surrounding environment information, user information, and the like.
  • the sensor unit 4140b may 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/or a radar. have.
  • the power supply unit 4140c supplies power to the XR device 10000c and may include a wired/wireless charging circuit, a battery, and the like.
  • the memory unit 4130 of the XR device 10000c may include information (eg, data, etc.) necessary for generating an XR object (eg, AR/VR/MR object).
  • the input/output unit 4140a may obtain a command to manipulate the XR device 10000c from a user, and the control unit 4120 may drive the XR device 10000c according to the user's driving command. For example, when a user attempts to watch a movie, news, etc. through the XR device 10000c, the controller 4120 may transmit the content request information to another device (eg, a mobile device 10000d) or Can be sent to the media server.
  • another device eg, a mobile device 10000d
  • the communication unit 4130 may download/stream content such as movies and news from another device (eg, the portable device 10000d) or a media server to the memory unit 4130.
  • the control unit 4120 controls and/or performs procedures such as video/image acquisition, (video/image) encoding, and metadata generation/processing for the content, and is acquired through the input/output unit 4140a/sensor unit 4140b.
  • An XR object may be generated/output based on information on a surrounding space or a real object.
  • the XR device 10000c is wirelessly connected to the mobile device 10000d through the communication unit 4110, and the operation of the XR device 10000c may be controlled by the mobile device 10000d.
  • the portable device 10000d may operate as a controller for the XR device 10000c.
  • the XR device 10000c may obtain 3D location information of the portable device 10000d, and then generate and output an XR object corresponding to the portable device 10000d.
  • an embodiment of the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
  • an embodiment of the present invention provides one or more ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), and FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, etc.
  • 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, etc.
  • an embodiment of the present invention may be implemented in the form of a module, procedure, or function that performs the functions or operations described above.
  • the software code can be stored in a memory and driven by a processor.
  • the memory may be located inside or outside the processor, and may exchange data with the processor through various known means.
  • the method for transmitting a highly reliable uplink signal in the wireless communication system of the present invention has been described centering on an example applied to the 3GPP NR system, but it can be applied to various wireless communication systems other than the 3GPP NR system.

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

Abstract

La présente invention concerne un procédé de rapport de marge de puissance (PH) à travers une bande sans licence dans un système de communication sans fil. Un procédé au moyen duquel un terminal rapporte une marge de puissance dans un système de communication sans fil, selon la présente invention, comprend les étapes consistant à : déclencher un rapport de PH concernant une pluralité de porteuses comprenant une porteuse de bande sous licence et une porteuse de bande sans licence; calculer une PH associée à des signaux de liaison montante transmis, à la pluralité de porteuses, à partir d'une ressource temporelle candidate initiale parmi des ressources temporelles candidates de la porteuse de bande sans licence qui peut être utilisée dans le rapport de PH; et rapporter la PH calculée à partir de la porteuse de bande sans licence à une station de base.
PCT/KR2020/002263 2019-02-15 2020-02-17 Procédé de rapport de marge de puissance dans une bande sans licence dans un système de communication sans fil et appareil associé WO2020167103A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160019457A (ko) * 2013-06-11 2016-02-19 퀄컴 인코포레이티드 비허가 스펙트럼을 사용한 lte/lte-a 업링크 캐리어 집성
WO2018026165A1 (fr) * 2016-08-01 2018-02-08 Samsung Electronics Co., Ltd. Procédé de rapport de marge de puissance et équipement utilisateur correspondant
WO2018030768A1 (fr) * 2016-08-08 2018-02-15 엘지전자 주식회사 Procédé et dispositif pour rapporter une marge de puissance
WO2018203678A1 (fr) * 2017-05-03 2018-11-08 엘지전자 주식회사 Procédé et appareil de notification de marge de puissance
KR20190008948A (ko) * 2016-05-26 2019-01-25 오피노 테크놀로지스, 엘엘씨 무선 디바이스 및 무선 네트워크에서의 전력 헤드룸 송신을 위한 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160019457A (ko) * 2013-06-11 2016-02-19 퀄컴 인코포레이티드 비허가 스펙트럼을 사용한 lte/lte-a 업링크 캐리어 집성
KR20190008948A (ko) * 2016-05-26 2019-01-25 오피노 테크놀로지스, 엘엘씨 무선 디바이스 및 무선 네트워크에서의 전력 헤드룸 송신을 위한 방법 및 장치
WO2018026165A1 (fr) * 2016-08-01 2018-02-08 Samsung Electronics Co., Ltd. Procédé de rapport de marge de puissance et équipement utilisateur correspondant
WO2018030768A1 (fr) * 2016-08-08 2018-02-15 엘지전자 주식회사 Procédé et dispositif pour rapporter une marge de puissance
WO2018203678A1 (fr) * 2017-05-03 2018-11-08 엘지전자 주식회사 Procédé et appareil de notification de marge de puissance

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