WO2023063708A1 - Sl drx 관리 - Google Patents
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- WO2023063708A1 WO2023063708A1 PCT/KR2022/015368 KR2022015368W WO2023063708A1 WO 2023063708 A1 WO2023063708 A1 WO 2023063708A1 KR 2022015368 W KR2022015368 W KR 2022015368W WO 2023063708 A1 WO2023063708 A1 WO 2023063708A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- This specification relates to mobile communication.
- 3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communication. Many schemes have been proposed for LTE goals, cost reduction for users and operators, improvement in service quality, coverage expansion, and system capacity increase. 3GPP LTE requires cost reduction per bit, improvement in service usability, flexible use of frequency bands, simple structure, open interface, and appropriate power consumption of terminals as high-level requirements.
- NR new radio
- 3GPP identifies the technical components needed to successfully standardize NRs that meet both urgent market needs and the longer-term requirements of the ITU radio communication sector (ITU-R) international mobile telecommunications (IMT)-2020 process in a timely manner. and must be developed.
- ITU-R ITU radio communication sector
- IMT international mobile telecommunications
- NR should be able to use any spectrum band up to at least 100 GHz that can be used for wireless communication even in the distant future.
- NR targets a single technology framework that addresses all deployment scenarios, usage scenarios and requirements, including enhanced mobile broadband (eMBB), massive machine type-communications (mMTC), and ultra-reliable and low latency communications (URLLC). do. NR must be inherently forward compatible.
- eMBB enhanced mobile broadband
- mMTC massive machine type-communications
- URLLC ultra-reliable and low latency communications
- resource sensing in the SL-DRX off section is enabled.
- FIG. 1 shows an example of a communication system to which an implementation of the present specification is applied.
- FIG. 2 shows an example of a wireless device to which implementations of the present disclosure apply.
- FIG 3 shows an example of a wireless device to which implementations of the present disclosure apply.
- FIG. 4 shows an example of a UE to which the implementation of the present specification is applied.
- 5 shows an example of a 5G system architecture.
- FIG. 6 is an exemplary diagram illustrating the concept of V2X.
- FIG. 7 is an exemplary view showing the configuration of a communication device installed in a vehicle for V2X communication.
- FIG 9 illustrates a sensing operation in a Uu link and a side link according to the disclosure of the present specification.
- FIG. 10 shows a procedure of a terminal according to the disclosure of the present specification.
- multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a system, and a single SC-FDMA system. It includes a carrier frequency division multiple access (MC-FDMA) system and a multicarrier frequency division multiple access (MC-FDMA) system.
- CDMA may be implemented through a radio technology such as universal terrestrial radio access (UTRA) or CDMA2000.
- TDMA may be implemented through a radio technology such as global system for mobile communications (GSM), general packet radio service (GPRS), or 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 through a radio technology such as institute of electrical and electronics engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or evolved UTRA (E-UTRA).
- UTRA is part of the 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.
- 3GPP LTE uses OFDMA in downlink (DL) and SC-FDMA in uplink (UL).
- the evolution of 3GPP LTE includes LTE-A (advanced), LTE-A Pro, and/or 5G NR (new radio).
- implementations herein are primarily described in the context of a 3GPP-based wireless communication system.
- the technical characteristics of the present specification are not limited thereto.
- the following detailed description is provided based on a mobile communication system corresponding to a 3GPP-based wireless communication system, aspects of the present disclosure that are not limited to a 3GPP-based wireless communication system may be applied to other mobile communication systems.
- a or B may mean “only A”, “only B”, or “both A and B”.
- a or B (A or B)" in the present specification may be interpreted as “A and/or B (A and/or B)”.
- A, B or C as used herein means “only A”, “only B”, “only C”, or “any and all combinations of A, B and C ( any combination of A, B and C)”.
- a slash (/) or a comma (comma) used in this specification may mean “and/or”.
- A/B can mean “A and/or B”. Accordingly, “A/B” may mean “only A”, “only B”, or “both A and B”.
- A, B, C may mean “A, B or C”.
- At least one of A and B may mean “only A”, “only B”, or “both A and B”.
- the expression “at least one of A or B” or “at least one of A and/or B” means “A and It can be interpreted the same as “at least one of A and B”.
- At least one of A, B and C means “only A”, “only B”, “only C", or “A, B and C” It may mean “any combination of A, B and C”.
- at least one of A, B or C or “at least one of A, B and/or C” means It may mean “at least one of A, B and C”.
- control information may be suggested as an example of “control information”.
- control information in this specification is not limited to “PDCCH”, and “PDCCH” may be suggested as an example of “control information”.
- PDCCH control information
- FIG. 1 shows an example of a communication system to which an implementation of the present specification is applied.
- the 5G usage scenario shown in FIG. 1 is only an example, and the technical features of this specification can be applied to other 5G usage scenarios not shown in FIG. 1 .
- enhanced mobile broadband eMBB
- massive machine type communication mMTC
- ultra-reliable low-latency communications URLLC; ultra-reliable and low latency communications
- a communication system 1 includes wireless devices 100a to 100f, a base station (BS) 200 and a network 300 .
- FIG. 1 illustrates a 5G network as an example of a network of the communication system 1, the implementation herein is not limited to the 5G system and may be applied to future communication systems beyond the 5G system.
- Base station 200 and network 300 may be implemented as wireless devices, and certain wireless devices may act as base station/network nodes in conjunction with other wireless devices.
- the wireless devices 100a to 100f represent devices that perform communication using radio access technology (RAT) (eg, 5G NR or LTE), and may also be referred to as communication/wireless/5G devices.
- the wireless devices 100a to 100f are, but are not limited to, a robot 100a, a vehicle 100b-1 and 100b-2, an extended reality (XR) device 100c, a portable device 100d, and a home appliance. It may include a product 100e, an IoT device 100f, and an artificial intelligence (AI) device/server 400.
- the vehicle may include a vehicle having a wireless communication function, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication. Vehicles may include unmanned aerial vehicles (UAVs) (eg, drones).
- UAVs unmanned aerial vehicles
- XR devices may include AR/VR/mixed reality (MR) devices, and HMDs (head- mounted device) or HUD (head-up display).
- Portable devices may include smart phones, smart pads, wearable devices (eg smart watches or smart glasses) and computers (eg laptops).
- Appliances may include TVs, refrigerators, and washing machines.
- IoT devices can include sensors and smart meters.
- the wireless devices 100a to 100f may be referred to as user equipment (UE).
- the UE includes, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate PC, a tablet PC, an ultrabook, a vehicle, and an autonomous driving function.
- vehicles connected cars, UAVs, AI modules, robots, AR devices, VR devices, MR devices, hologram devices, public safety devices, MTC devices, IoT devices, medical devices, fintech devices (or financial devices), security devices , weather/environment devices, 5G service related devices, or 4th industrial revolution related devices.
- a UAV may be an aircraft that is navigated by a radio control signal without a human being on board.
- a VR device may include a device for implementing an object or background of a virtual environment.
- an AR device may include a device implemented by connecting a virtual world object or background to a real world object or background.
- an MR apparatus may include a device implemented by merging an object or a background of the virtual world with an object or a background of the real world.
- the hologram device may include a device for realizing a 360-degree stereoscopic image by recording and reproducing stereoscopic information using an interference phenomenon of light generated when two laser lights, called holograms, meet.
- a public safety device may include an image relay device or imaging device wearable on a user's body.
- MTC devices and IoT devices may be devices that do not require direct human intervention or manipulation.
- MTC devices and IoT devices may include smart meters, vending machines, thermometers, smart light bulbs, door locks, or various sensors.
- a medical device may be a device used for the purpose of diagnosing, treating, mitigating, treating or preventing a disease.
- a medical device may be a device used to diagnose, treat, mitigate, or correct an injury or damage.
- a medical device may be a device used for the purpose of inspecting, replacing, or modifying structure or function.
- the medical device may be a device used for fertility control purposes.
- a medical device may include a device for treatment, a device for driving, a device for (in vitro) diagnosis, a hearing aid, or a device for procedures.
- a security device may be a device installed to prevent possible danger and to maintain safety.
- a security device may be a camera, closed circuit television (CCTV), recorder, or black box.
- a fintech device may be a device capable of providing financial services such as mobile payments.
- a fintech device may include a payment device or POS system.
- the weather/environment device may include a device that monitors or predicts the weather/environment.
- the wireless devices 100a to 100f may be connected to the network 300 through the base station 200 .
- AI technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI server 400 through the network 300.
- the network 300 may be configured using a 3G network, a 4G (eg LTE) network, a 5G (eg NR) network, and a network after 5G.
- the wireless devices 100a to 100f may communicate with each other through the base station 200/network 300, but communicate directly without going through the base station 200/network 300 (e.g., sidelink communication) You may.
- the vehicles 100b-1 and 100b-2 may perform direct communication (eg, vehicle-to-vehicle (V2V)/vehicle-to-everything (V2X) communication).
- IoT devices eg, sensors
- IoT devices may directly communicate with other IoT devices (eg, sensors) or other wireless devices 100a to 100f.
- a wireless communication/connection 150a, 150b, 150c may be established between the wireless devices 100a-100f and/or between the wireless devices 100a-100f and the base station 200 and/or between the base stations 200.
- the wireless communication/connection refers to uplink/downlink communication 150a, sidelink communication 150b (or device-to-device (D2D) communication), and inter-base station communication 150c (eg, relay, integrated IAB (integrated) communication). It can be established through various RATs (eg, 5G NR), such as access and backhaul).
- the wireless devices 100a to 100f and the base station 200 may transmit/receive radio signals to each other through the wireless communication/connection 150a, 150b, and 150c.
- the wireless communication/connections 150a, 150b, and 150c may transmit/receive signals through various physical channels.
- various configuration information setting processes for transmitting / receiving radio signals various signal processing processes (eg, channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), And at least a part of a resource allocation process may be performed.
- AI refers to the field of researching artificial intelligence or methodologies that can create it
- machine learning Machine Learning
- Machine Learning refers to the field of defining various problems dealt with in the field of artificial intelligence and studying methodologies to solve them.
- Machine learning is also defined as an algorithm that improves the performance of a certain task through constant experience.
- a robot may refer to a machine that automatically processes or operates a given task based on its own abilities.
- a robot having a function of recognizing an environment and performing an operation based on self-determination may be referred to as an intelligent robot.
- Robots can be classified into industrial, medical, household, military, etc. according to the purpose or field of use.
- the robot may perform various physical operations such as moving a robot joint by having a driving unit including an actuator or a motor.
- the movable robot includes wheels, brakes, propellers, and the like in the driving unit, and can run on the ground or fly in the air through the driving unit.
- Autonomous driving refers to a technology that drives by itself, and an autonomous vehicle refers to a vehicle that travels without a user's manipulation or with a user's minimal manipulation.
- autonomous driving includes technology to keep the driving lane, technology to automatically adjust the speed such as adaptive cruise control, technology to automatically drive along a set route, and technology to automatically set a route when a destination is set. All technologies may be included.
- a vehicle includes a vehicle having only an internal combustion engine, a hybrid vehicle having both an internal combustion engine and an electric motor, and an electric vehicle having only an electric motor, and may include not only automobiles but also trains and motorcycles.
- Self-driving vehicles can be viewed as robots with self-driving capabilities.
- Augmented reality is a collective term for VR, AR, and MR.
- VR technology provides only CG images of objects or backgrounds in the real world
- AR technology provides CG images created virtually on top of images of real objects
- MR technology provides CG images by mixing and combining virtual objects in the real world. It is a skill.
- MR technology is similar to AR technology in that it shows real and virtual objects together. However, there is a difference in that virtual objects are used to supplement real objects in AR technology, whereas virtual objects and real objects are used with equal characteristics in MR technology.
- NR supports a number of numerologies or subcarrier spacing (SCS) to support various 5G services. For example, when the SCS is 15 kHz, it supports a wide area in traditional cellular bands, and when the SCS is 30 kHz/60 kHz, dense-urban, lower latency and wider A wider carrier bandwidth is supported, and when the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz is supported to overcome phase noise.
- SCS subcarrier spacing
- the NR frequency band may be defined as two types of frequency ranges (FR1 and FR2).
- the number of frequency ranges can be changed.
- the frequency ranges of the two types FR1 and FR2 may be shown in Table 1 below.
- FR1 may mean "sub 6 GHz range”
- FR2 may mean "above 6 GHz range” and may be referred to as millimeter wave (mmW). there is.
- mmW millimeter wave
- FR1 may include a band of 410 MHz to 7125 MHz as shown in Table 2 below. That is, FR1 may include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher. For example, a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher included in FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, and may be used, for example, for communication for vehicles (eg, autonomous driving).
- the wireless communication technology implemented in the wireless device of the present specification may include narrowband IoT (NB-IoT) for low power communication as well as LTE, NR, and 6G.
- NB-IoT technology may be an example of low power wide area network (LPWAN) technology, and may be implemented in standards such as LTE Cat NB1 and/or LTE Cat NB2, and is not limited to the above-mentioned names.
- LPWAN low power wide area network
- the wireless communication technology implemented in the wireless device of the present specification may perform communication based on LTE-M technology.
- LTE-M technology may be an example of LPWAN technology and may be called various names such as eMTC (enhanced MTC).
- LTE-M technologies are 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-bandwidth limited), 5) LTE-MTC, 6) LTE MTC , and/or 7) may be implemented in at least one of various standards such as LTE M, and is not limited to the above-mentioned names.
- the wireless communication technology implemented in the wireless device of the present specification may include at least one of ZigBee, Bluetooth, and/or LPWAN considering low-power communication, and is limited to the above-mentioned names It is not.
- ZigBee technology can create personal area networks (PANs) related to small/low-power digital communication based on various standards such as IEEE 802.15.4, and can be called various names.
- PANs personal area networks
- FIG. 2 shows an example of a wireless device to which implementations of the present disclosure apply.
- the first wireless device 100 and the second wireless device 200 may transmit/receive radio signals to/from the external device through various RATs (eg, LTE and NR).
- various RATs eg, LTE and NR.
- ⁇ the first wireless device 100 and the second wireless device 200 ⁇ refer to ⁇ the wireless devices 100a to 100f and the base station 200 ⁇ in FIG. 1, ⁇ the wireless devices 100a to 100f ) and wireless devices 100a to 100f ⁇ and/or ⁇ base station 200 and base station 200 ⁇ .
- the first wireless device 100 may include at least one transceiver, such as transceiver 106, at least one processing chip, such as processing chip 101, and/or one or more antennas 108.
- Processing chip 101 may include at least one processor such as processor 102 and at least one memory such as memory 104 .
- memory 104 is shown by way of example to be included in processing chip 101 . Additionally and/or alternatively, memory 104 may be located external to processing chip 101 .
- Processor 102 may control memory 104 and/or transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed herein.
- the processor 102 may process information in the memory 104 to generate first information/signal and transmit a radio signal including the first information/signal through the transceiver 106 .
- the processor 102 may receive a radio signal including the second information/signal through the transceiver 106 and store information obtained by processing the second information/signal in the memory 104 .
- Memory 104 may be operably coupled to processor 102 .
- Memory 104 may store various types of information and/or instructions.
- Memory 104 may store software code 105 embodying instructions that when executed by processor 102 perform the descriptions, functions, procedures, suggestions, methods, and/or operational flow diagrams disclosed herein.
- software code 105 may implement instructions that, when executed by processor 102, perform the descriptions, functions, procedures, suggestions, methods, and/or operational flow diagrams disclosed herein.
- software code 105 may control processor 102 to perform one or more protocols.
- software code 105 may control processor 102 to perform one or more air interface protocol layers.
- processor 102 and memory 104 may be part of a communications modem/circuit/chip designed to implement a RAT (eg LTE or NR).
- Transceiver 106 may be coupled to processor 102 to transmit and/or receive wireless signals via one or more antennas 108 .
- Each transceiver 106 may include a transmitter and/or a receiver.
- the transceiver 106 may be used interchangeably with a radio frequency (RF) unit.
- the first wireless device 100 may represent a communication modem/circuit/chip.
- the second wireless device 200 may include at least one transceiver such as transceiver 206 , at least one processing chip such as processing chip 201 and/or one or more antennas 208 .
- Processing chip 201 may include at least one processor such as processor 202 and at least one memory such as memory 204 .
- memory 204 is shown by way of example to be included in processing chip 201 . Additionally and/or alternatively, memory 204 may be located external to processing chip 201 .
- Processor 202 may control memory 204 and/or transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed herein.
- the processor 202 may process information in the memory 204 to generate third information/signal and transmit a radio signal including the third information/signal through the transceiver 206 .
- the processor 202 may receive a radio signal including the fourth information/signal through the transceiver 206 and store information obtained by processing the fourth information/signal in the memory 204 .
- Memory 204 may be operably coupled to processor 202 .
- Memory 204 may store various types of information and/or instructions.
- Memory 204 may store software code 205 embodying instructions that when executed by processor 202 perform the descriptions, functions, procedures, suggestions, methods, and/or operational flow diagrams disclosed herein.
- software code 205 may implement instructions that, when executed by processor 202, perform the descriptions, functions, procedures, suggestions, methods, and/or operational flow diagrams disclosed herein.
- software code 205 may control processor 202 to perform one or more protocols.
- software code 205 may control processor 202 to perform one or more air interface protocol layers.
- the processor 202 and memory 204 may be part of a communications modem/circuit/chip designed to implement a RAT (eg LTE or NR).
- the transceiver 206 may be coupled to the processor 202 to transmit and/or receive wireless signals via one or more antennas 208 .
- Each transceiver 206 may include a transmitter and/or a receiver.
- the transceiver 206 may be used interchangeably with the RF unit.
- the second wireless device 200 may represent a communication modem/circuit/chip.
- one or more protocol layers may be implemented by one or more processors 102, 202.
- the one or more processors 102 and 202 may include one or more layers (eg, a physical (PHY) layer, a media access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, functional layers such as a radio resource control (RRC) layer and a service data adaptation protocol (SDAP) layer) may be implemented.
- layers eg, a physical (PHY) layer, a media access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, functional layers such as a radio resource control (RRC) layer and a service data adaptation protocol (SDAP) layer
- PHY physical
- MAC media access control
- RLC radio link control
- PDCP packet data convergence protocol
- RRC radio resource control
- SDAP service data adaptation protocol
- One or more processors 102, 202 generate one or more protocol data units (PDUs) and/or one or more service data units (SDUs) according to the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein. can do.
- One or more processors 102, 202 may generate messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein.
- One or more processors 102, 202 may process PDUs, SDUs, messages, control information, data or signals containing information (e.g., baseband signal) can be generated and provided to one or more transceivers (106, 206).
- One or more processors 102, 202 may receive signals (eg, baseband signals) from one or more transceivers 106, 206, and the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein According to the PDU, SDU, message, control information, data or information can be obtained.
- signals eg, baseband signals
- One or more processors 102, 202 may be referred to as a controller, microcontroller, microprocessor and/or microcomputer.
- One or more processors 102, 202 may be implemented by hardware, firmware, software, and/or combinations thereof.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gates
- Descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein may be implemented using firmware and/or software, and firmware and/or software may be implemented to include modules, procedures, and functions. .
- Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed herein may be included in one or more processors 102, 202 or stored in one or more memories 104, 204 and It can be driven by the above processors 102 and 202.
- the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed herein may be implemented using firmware or software in the form of codes, instructions and/or sets of instructions.
- One or more memories 104, 204 may be coupled with one or more processors 102, 202 and may store various types of data, signals, messages, information, programs, codes, instructions and/or instructions.
- the one or more memories 104, 204 may include read-only memory (ROM), random access memory (RAM), erasable programmable ROM (EPROM), flash memory, hard drive, registers, cache memory, computer readable storage media, and/or any of these It can be composed of a combination of One or more memories 104, 204 may be located internally and/or external to one or more processors 102, 202. Additionally, one or more memories 104, 204 may be coupled to one or more processors 102, 202 through various technologies, such as wired or wireless connections.
- One or more transceivers 106, 206 may transmit to one or more other devices user data, control information, radio signals/channels, etc., as discussed in the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein. .
- One or more transceivers 106, 206 may receive user data, control information, radio signals/channels, etc., from one or more other devices as referred to in the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein. there is.
- one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and transmit and receive wireless signals.
- one or more processors 102, 202 may control one or more transceivers 106, 206 to transmit user data, control information, radio signals, etc. to one or more other devices.
- one or more processors 102, 202 may control one or more transceivers 106, 206 to receive user data, control information, radio signals, and the like from one or more other devices.
- One or more transceivers 106, 206 may be coupled with one or more antennas 108, 208.
- One or more transceivers (106, 206) via one or more antennas (108, 208) transmit user data, control information, radio signals/channels referred to in the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein. etc. can be set to transmit and receive.
- one or more antennas 108 and 208 may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
- One or more transceivers use one or more processors (102, 202) to process received user data, control information, radio signals/channels, etc. etc. can be converted from an RF band signal to a baseband signal.
- One or more transceivers 106 and 206 may convert user data, control information, and radio signals/channels processed by one or more processors 102 and 202 from baseband signals to RF band signals.
- one or more of the transceivers 106 and 206 may include (analog) oscillators and/or filters.
- one or more transceivers 106, 206 up-convert an OFDM baseband signal to an OFDM signal via an (analog) oscillator and/or filter under the control of one or more processors 102, 202 and , the up-converted OFDM signal can be transmitted at the carrier frequency.
- One or more transceivers 106, 206 receive OFDM signals at the carrier frequency and down-convert the OFDM signals to OFDM baseband signals via (analog) oscillators and/or filters under the control of one or more processors 102, 202 ( down-convert).
- a UE may act as a transmitting device on an uplink (UL) and as a receiving device on a downlink (DL).
- a base station may operate as a receiving device in UL and as a transmitting device in DL.
- the first wireless device 100 operates as a UE and the second wireless device 200 operates as a base station.
- the processor 102 coupled to, mounted on, or shipped to the first wireless device 100 may perform UE operations in accordance with implementations herein or may operate the transceiver 106 to perform UE operations in accordance with implementations herein.
- a processor 202 connected to, mounted on, or shipped to the second wireless device 200 is configured to perform base station operations in accordance with implementations herein or to control the transceiver 206 to perform base station operations in accordance with implementations herein. It can be.
- a base station may be referred to as a Node B, an eNode B (eNB), or a gNB.
- eNB eNode B
- gNB gNode B
- FIG 3 shows an example of a wireless device to which implementations of the present disclosure apply.
- a wireless device may be implemented in various forms according to use cases/services (see FIG. 1).
- the wireless devices 100 and 200 may correspond to the wireless devices 100 and 200 of FIG. 2 and may be configured by various components, devices/parts and/or modules.
- each wireless device 100 , 200 may include a communication device 110 , a control device 120 , a memory device 130 and additional components 140 .
- the communication device 110 may include a communication circuit 112 and a transceiver 114 .
- communication circuitry 112 may include one or more processors 102, 202 of FIG. 2 and/or one or more memories 104, 204 of FIG.
- transceiver 114 may include one or more transceivers 106, 206 of FIG. 2 and/or one or more antennas 108, 208 of FIG.
- the control device 120 is electrically connected to the communication device 110, the memory device 130, and the additional component 140, and controls the overall operation of each wireless device 100, 200.
- the control device 120 may control electrical/mechanical operation of each of the wireless devices 100 and 200 based on programs/codes/commands/information stored in the memory device 130 .
- the control device 120 transmits information stored in the memory device 130 to the outside (eg, other communication devices) via the communication device 110 through a wireless/wired interface, or through a wireless/wired interface to a communication device ( 110), information received from the outside (eg, other communication devices) may be stored in the memory device 130.
- the additional component 140 may be configured in various ways according to the type of the wireless device 100 or 200.
- additional components 140 may include at least one of a power unit/battery, an input/output (I/O) device (eg, an audio I/O port, a video I/O port), a power unit, and a computing device.
- I/O input/output
- Wireless devices 100 and 200 include, but are not limited to, a robot (100a in FIG. 1 ), a vehicle (100b-1 and 100b-2 in FIG. 1 ), an XR device (100c in FIG. 1 ), a portable device ( FIG. 1 100d), home appliances (100e in FIG. 1), IoT devices (100f in FIG.
- wireless devices 100 and 200 may be used in a mobile or fixed location depending on usage/service.
- all of the various components, devices/parts and/or modules of the wireless devices 100 and 200 may be connected to each other through wired interfaces, or at least some of them may be wirelessly connected through the communication device 110.
- the control device 120 and the communication device 110 are connected by wire, and the control device 120 and the first devices (eg, 130 and 140) are communication devices. It can be connected wirelessly through (110).
- Each component, device/portion and/or module within the wireless device 100, 200 may further include one or more elements.
- the control device 120 may be configured by one or more processor sets.
- control device 120 may be configured by a set of a communication control processor, an application processor (AP), an electronic control unit (ECU), a graphic processing unit, and a memory control processor.
- AP application processor
- ECU electronice control unit
- the memory device 130 may include RAM, DRAM, ROM, flash memory, volatile memory, non-volatile memory, and/or a combination thereof.
- a UE 100 may correspond to the first wireless device 100 of FIG. 2 and/or the wireless device 100 or 200 of FIG. 3 .
- the UE 100 includes a processor 102, a memory 104, a transceiver 106, one or more antennas 108, a power management module 110, a battery 112, a display 114, a keypad 116, a SIM (subscriber identification module) includes a card 118, a speaker 120, and a microphone 122.
- a processor 102 includes a processor 102, a memory 104, a transceiver 106, one or more antennas 108, a power management module 110, a battery 112, a display 114, a keypad 116, a SIM (subscriber identification module) includes a card 118, a speaker 120, and a microphone 122.
- a SIM subscriber identification module
- Processor 102 may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed herein. Processor 102 may be configured to control one or more other components of UE 100 to implement the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams disclosed herein. Layers of air interface protocols may be implemented in processor 102 .
- Processor 102 may include an ASIC, other chipset, logic circuit, and/or data processing device.
- Processor 102 may be an applications processor.
- the processor 102 may include at least one of a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), and a modem (modulator and demodulator).
- DSP digital signal processor
- CPU central processing unit
- GPU graphics processing unit
- modem modulator and demodulator
- processor 102 examples include SNAPDRAGONTM series processors made by Qualcomm®, EXYNOS TM series processors made by Samsung®, A series processors made by Apple®, HELIO TM series processors made by MediaTek®, ATOM TM series processors made by Intel®, or It can be found in corresponding next-generation processors.
- Memory 104 is operatively coupled to processor 102 and stores various information for operating processor 102 .
- Memory 104 may include ROM, RAM, flash memory, memory cards, storage media, and/or other storage devices.
- modules eg, procedures, functions, etc.
- a module may be stored in memory 104 and executed by processor 102 .
- Memory 104 may be implemented within processor 102 or external to processor 102, in which case it may be communicatively coupled with processor 102 through a variety of methods known in the art.
- a transceiver 106 is operatively coupled to the processor 102 and transmits and/or receives wireless signals.
- the transceiver 106 includes a transmitter and a receiver.
- the transceiver 106 may include baseband circuitry for processing radio frequency signals.
- the transceiver 106 controls one or more antennas 108 to transmit and/or receive radio signals.
- Power management module 110 manages power to processor 102 and/or transceiver 106 .
- the battery 112 supplies power to the power management module 110 .
- Display 114 outputs the result processed by processor 102 .
- Keypad 116 receives input for use by processor 102 .
- Keypad 116 may be displayed on display 114 .
- the SIM card 118 is an integrated circuit for securely storing an international mobile subscriber identity (IMSI) and related keys, and is used to identify and authenticate a subscriber in a mobile phone device such as a mobile phone or computer. You can also store contact information on many SIM cards.
- IMSI international mobile subscriber identity
- the speaker 120 outputs sound related results processed by the processor 102 .
- Microphone 122 receives sound related input for use by processor 102 .
- 5 shows an example of a 5G system architecture.
- the structure of a 5G system consists of the following network functions (NFs).
- Data Network e.g. operator services, internet access or third party services
- Figure 5 shows the 5G system architecture in a non-roaming case using a reference point representation showing how the various network functions interact with each other.
- UDSF In FIG. 5, for clarity of the point-to-point diagram, UDSF, NEF and NRF are not described. However, all network functions shown can interact with UDSF, UDR, NEF and NRF as needed.
- connection of the UDR to other NFs is not shown in FIG. 5 .
- connections between NWDAF and other NFs are not shown in FIG. 5 .
- the 5G system architecture includes the following reference points.
- V2X (vehicle-to-everything) communication will be described.
- V2X communication the definition below may be used.
- V2X applications Applications that use one or more V2X services (e.g. active safety applications in vehicles, emergency alerts, vehicle safety and awareness, etc.). V2X applications may operate towards the V2X application server.
- V2X services e.g. active safety applications in vehicles, emergency alerts, vehicle safety and awareness, etc.
- V2X applications may operate towards the V2X application server.
- V2X communication communication to support V2X service by utilizing Uu and/or PC5 reference points.
- V2X services are implemented through various types of V2X applications, such as vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), vehicle-to-infrastructure (V2I), and vehicle-to-network (V2N). .
- V2V vehicle-to-vehicle
- V2P vehicle-to-pedestrian
- V2I vehicle-to-infrastructure
- V2N vehicle-to-network
- V2X message This is a dedicated messaging type for V2X service (e.g., ITS (intelligent transport system) message).
- ITS intelligent transport system
- V2X service This is a data service provided to the V2X application and optionally the V2X application server.
- V2X service belongs to one V2X service type.
- V2X service may be connected to one or more V2X applications, and V2X applications may be connected to one or more V2X services.
- V2X service type This is a V2X service type identified by ITS-AID (ITS application identifier) or PSID (provider service identifier).
- V2X communication has two modes of operation: V2X communication through the PC5 reference point and V2X communication through the Uu reference point. These two modes of operation can be used independently by the UE for transmission and reception.
- V2X communication through the PC5 reference point is supported by LTE and / or NR.
- V2X communication through the Uu reference point is supported by E-UTRA connected to 5GC and/or NR connected to 5GC. V2X communication through the Uu reference point may only be unicast.
- V2X collectively refers to communication technologies through vehicles and all interfaces.
- the implementation form of V2X may be as follows.
- V2X may be a vehicle (VEHICLE).
- V2X may be expressed as V2V V2V (vehicle-to-vehicle) and may mean communication between vehicles.
- FIG. 6 is V2X representing the concept is an example .
- vehicles ie, wireless devices mounted in vehicles
- 100 - 1 , 100 - 2 , and 100 - 3 may communicate with each other.
- V2X can mean a person (Persian) or a pedestrian (PEDESTRIAN).
- V2X can be expressed as V2P (vehicle-to-person or vehicle-to-pedestrian).
- the pedestrian is not necessarily limited to a person moving on foot, but may also include a person riding a bicycle, a driver or a passenger of a vehicle (less than a certain speed).
- V2X can be expressed as V2I (vehicle-to-infrastructure) or V2N (vehicle-to-network) and can mean communication between a vehicle and a roadside unit (RSU) or a vehicle and a network.
- the roadside device may be a traffic-related infrastructure, for example, a device that informs speed.
- the roadside device may be implemented in a base station or a fixed terminal or the like.
- Figure 7 is V2X Showing the configuration of a communication device installed in a vehicle for communication is an example .
- a communication device installed in a vehicle may be referred to as a Telematics Communication Unit (TCU).
- TCU Telematics Communication Unit
- the TCU includes an LTE transceiver (ie, LTE modem/antenna), a first 5G transceiver (ie, a modem/antenna using sub 6GHz), a second 5G transceiver (ie, a modem/antenna using mmWave), and a WLAN transceiver. (ie, a WiFi transceiver), a processor, and a memory.
- the LTE transmission/reception unit is a communication module that performs communication based on the LTE standard.
- the first 5G transceiver ie, modem/antenna using sub 6GHz
- the second 5G transceiver (ie, modem/antenna using mmWave) is a communication module that performs communication based on the 5G standard in the FR 2 band.
- a WLAN transceiver (ie, WiFi transceiver) is a communication module that performs communication based on the WiFi standard.
- the LTE transceiver, the first 5G transceiver (ie, modem/antenna using sub 6GHz), the second 5G transceiver (ie, modem/antenna using mmWave), and the WLAN transceiver (ie, WiFi transceiver) are PCIe ( It can be connected to the processor through an interface such as PCI express).
- the LTE transceiver, the first 5G transceiver (ie, modem/antenna using sub 6GHz), the second 5G transceiver (ie, modem/antenna using mmWave), and the WLAN transceiver (ie, WiFi transceiver) Each is shown as a separate object, but one communication module is an LTE transceiver, a first 5G transceiver (ie, a modem/antenna using sub 6GHz), and a second 5G transceiver (ie, a modem/antenna using mmWave) And it may perform the function of a WLAN transceiver (ie, WiFi transceiver).
- the processor of the TCU includes a first 5G transceiver (ie, a modem/antenna using sub 6GHz), a second 5G transceiver (ie, a modem/antenna using mmWave), a WLAN transceiver (ie, WiFi transceiver), and memory. Connected.
- the memory can store MEC client apps.
- the processor includes an LTE transceiver, a first 5G transceiver (ie, a modem/antenna using sub 6GHz), a second 5G transceiver (ie, a modem/antenna using mmWave), and a WLAN transceiver (ie, WiFi transceiver).
- the processor includes an LTE transceiver, a first 5G transceiver (ie, a modem/antenna using sub 6GHz), a second 5G transceiver (ie, a modem/antenna using mmWave), and a WLAN transceiver (ie, WiFi transceiver).
- data can be transmitted to base stations or terminals (terminal 1 and terminal 2) using
- the terminals (terminal 1 and terminal 2) may be wireless communication devices used by a user riding in a vehicle.
- a processor of the TCU may be connected to devices installed in a vehicle.
- the processor can be coupled with a domain control unit (DCU), a local interconnect network (LIN) master, a media oriented system transport (MOST) master, and an Ethernet switch.
- the processor of the TCU may communicate with the DCU using CAN (Controller Area Network) communication technology.
- the processor of the TCU may communicate with the LIN master using Local Interconnect Network (LIN) communication technology.
- the processor of the TCU may communicate with the MOST master connected through fiber optics using the MOST communication technology.
- the TCU's processor can communicate with the Ethernet switch and devices connected to the Ethernet switch using Ethernet communication technology.
- a DCU is a device that controls a plurality of ECUs.
- the DCU may communicate with a plurality of ECUs using CAN communication technology.
- CAN is a standard communication technology designed for microcontrollers or devices to communicate with each other in a vehicle.
- CAN is a non-host bus type message-based network protocol mainly used for communication between each controller.
- the DCU can communicate with ECUs such as engine ECUs that control the engine, brake ECUs that control brakes, and HVAC ECUs that control HVAC (heating, ventilation, & air conditioning) devices.
- ECUs such as engine ECUs that control the engine, brake ECUs that control brakes, and HVAC ECUs that control HVAC (heating, ventilation, & air conditioning) devices.
- the DCU may transmit data received from the processor of the TCU to each ECU. Also, the DCU may transmit data received from each ECU to the processor of the TCU.
- the LIN master may communicate with LIN slaves (LIN Slave #1 and LIN Slave #2) using LIN communication technology.
- LIN Slave #1 may be a slave that controls one of a steering wheel, a roof top, a door, a seat, and a small motor.
- LIN is a serial communication technology for communication between components in a vehicle network.
- the LIN master may receive data from the processor of the TCU and transmit the data to LIN slaves (LIN Slave #1 and LIN Slave #2).
- the LIN master may transmit data received from LIN slaves to the processor of the TCU.
- the MOST master may communicate with MOST slaves (MOST Slave #1 and MOST Slave #2) using MOST communication technology.
- MOST is a serial communication technology that transmits audio, video, and control information using an optical cable.
- the MOST master may transmit data received from the processor of the TCU to the MOST slaves. Also, the MOST master may transmit data received from the MOST slaves to the processor of the TCU.
- Ethernet is a computer networking technology used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN).
- the processor of the TCU may transmit data to each device through an Ethernet switch using Ethernet communication technology.
- Each device can transmit data to the TCU's processor through an Ethernet switch using Ethernet communication technology.
- Radar radio detection and ranging
- Radar sensors 1 to 5 are provided in the vehicle to measure the distance, direction, angle and speed of objects around the vehicle. Radar sensors 1 to 5 may transmit measured sensor data to the processor of the TCU.
- LiDAR Light detection and ranging
- LiDAR sensors 1 to 5 measure the distance and speed to the target. LiDAR sensors 1 to 5 may transmit measured sensor data to the processor of the TCU.
- AVN Audio, Video, Navigation
- the AVN may receive data from the processor of the TCU using Ethernet communication technology, and may provide sound, image, and navigation based on the received data.
- AVN can transmit data to the TCU's processor using Ethernet communication technology.
- the camera (front) and camera (rear) can take images from the front and rear of the vehicle. 7 shows that there are only one camera in the front and one in the rear, but this is only an example, and cameras may be provided on the left and right sides. In addition, a plurality of cameras may be provided at each of the front and rear sides. The cameras may transmit camera data to the processor of the TCU and receive data from the processor of the TCU using Ethernet communication technology.
- RSE Rear Side Entertainment
- the RSE is a device that is mounted behind a passenger seat or behind a driver's seat to provide entertainment to occupants.
- a tablet may also be provided inside the vehicle.
- the RSE or tablet may receive data from the TCU's processor and transmit data to the TCU's processor using Ethernet communication technology.
- PSSCH-RSRP PSSCH reference signal received power
- PSSCH-RSRP PSSCH reference signal received power
- [W] power contributions
- PSSCH-RSRP In the case of frequency range 1 (FR1), the reference point for PSSCH-RSRP should be the antenna connector of the UE. In the case of frequency range 2 (FR2), PSSCH-RSRP should be measured based on the combined signal of antenna elements corresponding to a given receiver branch. For FR1 and FR2, if receiver diversity is in use by the UE, the reported PSSCH-RSRP value shall not be lower than the corresponding PSSCH-RSRP of the individual receiver branch.
- PSSCH-RSRP may be applied to RRC_IDLE intra-frequency, RRC_IDLE inter-frequency, and RRC_CONNECTED inter-frequency.
- PSCCH-RSRP PSCCH reference signal received power
- PSCCH-RSRP PSCCH reference signal received power
- the reference point for PSCCH-RSRP should be the antenna connector of the UE.
- the PSCCH-RSRP should be measured based on the combined signal of the antenna element corresponding to the given receiver branch.
- the reported PSCCH-RSRP value shall not be lower than the corresponding PSCCH-RSRP of the individual receiver branch.
- PSCCH-RSRP may be applied to RRC_IDLE intra-frequency, RRC_IDLE inter-frequency, and RRC_CONNECTED inter-frequency.
- SL RSSI Sidelink Received Signal Strength Indicator
- the reference point of SL RSSI should be the antenna connector of the UE.
- SL RSSI should be measured based on the combined signal of antenna elements corresponding to a given receiver branch. For FR1 and FR2, if receiver diversity is in use by the UE, the reported SL RSSI value shall not be lower than the corresponding SL RSSI of the individual receiver branch.
- SL RSSI may be applied to RRC_IDLE intra-frequency, RRC_IDLE inter-frequency, RRC_CONNECTED intra-frequency, and RRC_CONNECTED inter-frequency.
- a UE configured with SL-DRX can transmit and receive sidelink signals in the DRX on section. For signal transmission and reception, the terminal
- RF can be changed from off to on at the start of the DRX on section. Similarly, RF can be changed from on to off at the point where the DRX on section ends. This RF on/off change may cause interruption to other carriers. Conventionally, the interruption is defined.
- the terminal To transmit and receive sidelink signals in the DRX on section, the terminal performs resource sensing before transmitting and receiving signals.
- the terminal must turn on the RF to perform sensing. Since the RF is off in the DRX off period, the UE needs to change the RF to on to perform sensing in the DRX off period. This RF on/off change may cause interruption to other carriers. It is a problem because interruption by sensing in the current DRX off section is not regulated.
- a terminal device (smartphone, car, robot, etc.) supporting sidelink communication is the signal strength (e.g., RSSI, RSRP, etc.) can be measured. Based on the measurement result, a signal may be transmitted through an empty resource.
- a V2X terminal may sense resources by measuring RSRP or RSSI through a sensing window for x msec before transmitting a signal. Based on the measurement result, the terminal may determine a set of transmittable resources and select a final transmit resource through a selection window. If a terminal configured with SL-DRX performs sensing in a sensing window period, the sensing window period may be located while the terminal is in a DRX off state.
- the terminal changes from RF off to RF on.
- the change may cause interruption to other serving carriers.
- V2X sensing operation may be restricted. In this specification, when SL-DRX is set, interference due to sensing operation and V2X sensing operation according to the RF structure will be described.
- V2X terminals can be configured with SL-DRX for power saving. That is, based on the set period (e.g., 640 msec), data reception operation can be performed in the DRX on section, and the terminal RF can be turned off for power saving in the DRX off section.
- a V2X terminal may start a sensing operation ahead of a certain time in order to set a candidate resource before transmitting a sidelink signal. In this case, the terminal changes the RF from off to on for a sensing operation during a time other than the DRX on section. The change may cause interruption as described above.
- the network may set a candidate resource selection method in one or a combination of two or more of the three methods for the terminal's candidate resource selection.
- the terminal can perform RSSI (or RSRP) measurement during the sensing window period.
- RSSI or RSRP
- the terminal can always perform a receiving operation during the sensing window period. Accordingly, the UE changes RF on/off at the starting and ending portions of sensing, and thus, interference may occur. If the starting or ending point of the sensing window section overlaps the on section of the SL-DRX, the aforementioned interruption may not occur. This is because RF is on in the SL-DRX on section, so it is not necessary to change the RF on/off.
- the start and end points of the sensing window can be set within the on-duration period of SL-DRX.
- the terminal can perform a sensing operation in a set period without always performing a sensing operation during the sensing window period.
- the UE may perform sensing by turning on RF in a section in which DRX is off.
- the terminal may turn off the RF again.
- interruption may occur to other serving carriers whenever RF is turned on/off in the DRX off period.
- interference due to partial sensing may occur in addition to interference caused by SL-DRX.
- Table 3 shows interference caused by SL-DRX.
- An interruption slot in which an interruption occurs may be determined.
- interruption percentage and missed ACK/NACK percentage can be considered as shown in Table 3.
- the interruption slot indicates the number of slots in which interference occurs in one SL-DRX on section. That is, in the SL-DRX on period, a change from RF off to on may cause one slot of interruption, and a change from RF on to off may cause interruption in one slot. Interruption may occur in a total of 2 slots.
- the time during which interruption occurs may be a value obtained by multiplying 'SL-DRX cycle' by '% of interruption'. For successful ACK/NACK, there must be no interruption not only in a slot for receiving data but also in a slot for transmitting ACK/NACK. Therefore, '% of missed ACK/NACK' can have twice the value of '% of interruption'.
- the performance of data transmission/reception may be affected due to excessive interference. Therefore, even when the SL-DRX cycle is small, an interruption percentage may occur up to 2.5% or 5%, causing data transmission/reception problems. To solve this problem, you can limit the total interruption percentage or missed ACK/NACK percentage. For example, when the SL-DRX cycle is less than 640 msec, a missed ACK/NACK percentage of 1% or 1.25% may be considered, and when the SL-DRX cycle is longer than 640 msec, a missed ACK/NACK percentage of 0.625% may be limited.
- the network does not know the sensing window of the terminal, so it cannot know when interruption occurs, so the interruption percentage or missed ACK/NACK percentage must be used to consider the effect of interruption. .
- Interruption by sensing may be applied the same as a value specified for interference caused by conventional SL-DRX. That is, '% of interruption' and '% of missed ACK/NACK' described in Table 3 may be equally applied to interference by sensing. For example, if the SL-DRX cycle is 640 ms, interruption by sensing may generate '% of interruption' of 0.313 and '% of missed ACK/NACK' of 0.625.
- Table 4 shows the interruption percentage and missed ACK/NACK percentage considering the interruption caused by the existing SL-DRX plus two interruption slots by sensing.
- the interruption [slot] shown in Table 4 refers to a slot in which interference occurs due to sensing.
- '% of interruption' and '% of missed ACK/NACK' expressed in Table 4 are values considering both interruption caused by SL-DRX and interference caused by sensing.
- the '% of interruption' caused by SL-DRX is 0.313.
- the '% of interruption' considering both SL-DRX and sensing is 0.625.
- interruption percentage or missed ACK/NACK percentage due to the sensing operation must allow a greater interruption than the interruption percentage or missed ACK/NACK percentage due to DRX on-off change in SL-DRX.
- interruption percentage or missed ACK/NACK percentage due to sensing operation may be twice the interruption percentage or missed ACK/NACK percentage due to DRX on-off change in SL-DRX.
- the network can request sensing window information from the terminal so that it can consider the interval where interruption due to the terminal sensing operation in SL-DRX can occur, and the terminal reports the predetermined sensing window and the starting point of the sensing window to the network. can do.
- the terminal can support WAN (Uu) and V2X (SL) based on the shared RF structure.
- WAN and V2X can be supported simultaneously with TDM on one licensed band (n79). Since the sidelink transmits and receives operations in Uu's Tx (uplink) resource, the terminal can perform sidelink transmission and reception operations when there is no Uu's uplink resource.
- sensing operation may not be performed due to Uu uplink. Then, the terminal may not be able to measure the RSRP or RSSI for the candidate resource in the sensing resource configured by the network or pre-configurated in the terminal.
- the Z value can be set according to the packet priority (importance) in the network, and can be pre-configured and set in the terminal.
- the terminal can select the Tx resource through random resource selection.
- FIG. 10 shows a procedure of a terminal according to the disclosure of the present specification.
- the UE may perform resource sensing for sidelink (SL) signal transmission in the SL-DRX off period.
- SL sidelink
- the UE may determine an SL transmission resource based on the resource sensing result.
- the terminal may perform a transition between the SL-DRX off state of the terminal and the SL-DRX on state of the terminal.
- the UE may transmit an SL signal to another UE through the SL transmission resource in the SL-DRX on state of the UE.
- the terminal can transmit and receive Uu link (uplink and downlink) signals with the base station.
- Interruption may occur in the first slot by the resource sensing.
- Interruption may occur in the second slot due to the transition.
- the terminal may skip transmission and reception of the Uu link signal.
- the number of the first slots and the number of the second slots may be two.
- the cycle of the SL-DRX may be 640 ms.
- the probability of missed ACK/NACK (Acknowledgement/Negative Acknowledgement) for the first slot may be 0.625%.
- the probability of missed ACK/NACK for the second slot may be 0.625%.
- the step of determining the SL transmission resource may be randomly determined.
- the terminal may transmit information about the first slot to the network.
- the SL-DRX on period may be a period in which at least one of an onDuration timer, an inactivity timer, and a retransmission timer is driven.
- the SL-DRX off section may be a section other than the SL-DRX on section.
- a base station may include a processor, transceiver and memory.
- a processor may be configured to be operably coupled with a memory and a processor.
- the processor performs resource sensing for sidelink (SL) signal transmission by the UE in an SL-DRX off period; Based on the resource sensing result, the processor determines an SL transmission resource; The processor performs a transition between an SL-DRX off state of the UE and an SL-DRX on state of the UE; the transceiver transmits an SL signal to another UE through the SL transmission resource in the SL-DRX on state of the UE; The transceiver transmits and receives a Uu link (Uplink and Downlink) signal with a base station, and an interruption occurs in a first slot by the resource sensing, and an interruption occurs in a second slot by the transition. occurs, and the terminal may skip transmission and reception of the Uu link signal in the first slot and the second slot.
- Uu link Uplink and Downlink
- the processor performs, by the UE, resource sensing for sidelink (SL) signal transmission in an SL-DRX off period; determining an SL transmission resource based on the resource sensing result; Transitioning between the SL-DRX off state of the UE and the SL-DRX on state of the UE; Transmitting an SL signal to another UE through the SL transmission resource in the SL-DRX on state of the UE; and transmitting and receiving a Uu link (Uplink and Downlink) signal with the base station, interruption occurs in the first slot by the resource sensing, and interruption occurs in the second slot by the transition. ) occurs, and the terminal may skip transmission and reception of the Uu link signal in the first slot and the second slot.
- SL sidelink
- non-volatile computer readable medium storing one or more instructions for providing a multicast service in a wireless communication system according to some embodiments of the present invention will be described.
- technical features of the present disclosure may be directly implemented in hardware, software executed by a processor, or a combination of the two.
- a method performed by a wireless device may be implemented in hardware, software, firmware, or any combination thereof.
- software may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or other storage medium.
- storage media are coupled to the processor such that the processor can read information from the storage media.
- the storage medium may be integral to the processor.
- a processor and storage medium may reside in an ASIC.
- the processor and storage medium may reside as separate components.
- Computer readable media may include both tangible and non-volatile computer readable storage media.
- non-volatile computer readable media may include Random Access Memory (RAM) such as Synchronization Dynamic Random Access Memory (SDRAM), Read-Only Memory (ROM), and Non-Volatile Random Access Memory (NVRAM).
- RAM Random Access Memory
- SDRAM Synchronization Dynamic Random Access Memory
- ROM Read-Only Memory
- NVRAM Non-Volatile Random Access Memory
- EEPROM Read-only memory
- flash memory magnetic or optical data storage medium, or any other medium that can be used to store instructions or data structures.
- Non-volatile computer readable media may also include combinations of the above.
- the methods described herein may be realized at least in part by computer readable communication media that convey or convey code in the form of instructions or data structures and that can be accessed, read and/or executed by a computer.
- a non-transitory computer readable medium has one or more instructions stored thereon.
- the stored one or more instructions may be executed by a processor of the base station.
- One or more stored instructions may cause processors to perform resource sensing for sidelink (SL) signal transmission by the UE in an SL-DRX off period; determining an SL transmission resource based on the resource sensing result; Transitioning between the SL-DRX off state of the UE and the SL-DRX on state of the UE; Transmitting an SL signal to another UE through the SL transmission resource in the SL-DRX on state of the UE; and transmitting and receiving a Uu link (Uplink and Downlink) signal with the base station. Interruption occurs in the first slot by the resource sensing, and transmission in the second slot occurs by the transition. Interruption occurs, and the terminal may skip transmission and reception of the Uu link signal in the first slot and the second slot.
- SL sidelink
- resource sensing in the SL-DRX off section is enabled.
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- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
| 주파수 범위 정의 | 주파수 범위 | 부반송파 간격 |
| FR1 | 450MHz - 6000MHz | 15, 30, 60kHz |
| FR2 | 24250MHz - 52600MHz | 60, 120, 240kHz |
| 주파수 범위 정의 | 주파수 범위 | 부반송파 간격 |
| FR1 | 410MHz - 7125MHz | 15, 30, 60kHz |
| FR2 | 24250MHz - 52600MHz | 60, 120, 240kHz |
| SL-DRX cycle [msec] | |||||||||
| 40 | 80 | 128 | 160 | 256 | 320 | 512 | 640 | 1280 | |
| interruption [slot] | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| % of interruption | 5 | 2.5 | 1.563 | 1.25 | 0.781 | 0.625 | 0.391 | 0.313 | 0.156 |
| % of missed ACK/NACK | 10 | 5 | 3.125 | 2.5 | 1.563 | 1.25 | 0.781 | 0.625 | 0.313 |
| SL-DRX cycle [msec] | |||||||||
| 40 | 80 | 128 | 160 | 256 | 320 | 512 | 640 | 1280 | |
| interruption [slot] | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| % of interruption | 10 | 5 | 3.125 | 2.5 | 1.563 | 1.25 | 0.781 | 0.625 | 0.313 |
| % of missed ACK/NACK | 20 | 10 | 6.25 | 5 | 3.125 | 2.5 | 1.563 | 1.25 | 0.625 |
Claims (14)
- UE (User Equipment)가 SL-DRX (Sidelink discontinuous reception)를 수행하는 방법으로서,상기 UE가 SL-DRX off 구간에서 SL (sidelink) 신호 송신을 위한 자원 센싱을 수행하는 단계;상기 자원 센싱 결과에 기초하여, SL 송신 자원을 결정하는 단계;상기 UE의 SL-DRX off 상태와 상기 UE의 SL-DRX on 상태 간 변경(transition)을 수행하는 단계;상기 UE의 상기 SL-DRX on 상태에서 상기 SL 송신 자원을 통해 다른 UE로 SL 신호를 송신하는 단계; 및기지국과 Uu link (Uplink and downlink)신호를 송수신하는 단계를 포함하고,상기 자원 센싱에 의해 제1 슬롯에 간섭 (interruption)이 발생하고,상기 변경 (transition)에 의해 제2 슬롯에 간섭 (interruption)이 발생하고,상기 제1 슬롯 및 상기 제2 슬롯에서 상기 단말은 상기 Uu link 신호의 송수신을 건너뛰는 방법.
- 제1항에 있어서,상기 제1 슬롯의 개수와 상기 제2 슬롯의 개수는 2개인 방법.
- 제1항에 있어서,상기 SL-DRX의 cycle은 640 ms 이상이고,상기 제1 슬롯에 대한 missed ACK/NACK (Acknowledgement/Negative Acknowledgement)의 가능성은 0.625%이고,상기 제2 슬롯에 대한 missed ACK/NACK 의 가능성은 0.625%인 방법.
- 제1항에 있어서,상기 자원 센싱의 실패 확률이 임계값을 초과하는 것에 기초하여,상기 SL 송신 자원을 결정하는 단계는 무작위 (random)로 결정되는 방법.
- 제1항에 있어서,네트워크에 상기 제1 슬롯에 대한 정보를 송신하는 단계를 더 포함하는 방법.
- 제1항에 있어서,SL-DRX on 구간은 onDuration 타이머, Inactivity 타이머 및 Retransmission 타이머 중 적어도 하나의 타이머가 구동되는 구간이고,상기 SL-DRX off 구간은 상기 SL-DRX on 구간이 아닌 구간인 방법.
- SL-DRX (Sidelink discontinuous reception)를 수행하는 UE(user equipment)로서,송수신기와;프로세서를 포함하고,상기 프로세서는 상기 UE가 SL-DRX off 구간에서 SL (sidelink) 신호 송신을 위한 자원 센싱을 수행하고;상기 자원 센싱 결과에 기초하여, 상기 프로세서는 SL 송신 자원을 결정하고;상기 프로세서는 상기 UE의 SL-DRX off 상태와 상기 UE의 SL-DRX on 상태 간 변경(transition)을 수행하고;상기 송수신기는 상기 UE의 상기 SL-DRX on 상태에서 상기 SL 송신 자원을 통해 다른 UE로 SL 신호를 송신하고;상기 송수신기는 기지국과 Uu link (Uplink and downlink)신호를 송수신하고,상기 자원 센싱에 의해 제1 슬롯에 간섭 (interruption)이 발생하고,상기 변경 (transition)에 의해 제2 슬롯에 간섭 (interruption)이 발생하고,상기 제1 슬롯 및 상기 제2 슬롯에서 상기 단말은 상기 Uu link 신호의 송수신을 건너뛰는 UE.
- 제7항에 있어서,상기 제1 슬롯의 개수와 상기 제2 슬롯의 개수는 2개인 UE.
- 제7항에 있어서,상기 SL-DRX의 cycle은 640 ms 이상이고,상기 제1 슬롯에 대한 missed ACK/NACK (Acknowledgement/Negative Acknowledgement)의 가능성은 0.625%이고,상기 제2 슬롯에 대한 missed ACK/NACK 의 가능성은 0.625%인 UE.
- 제7항에 있어서,상기 자원 센싱의 실패 확률이 임계값을 초과하는 것에 기초하여,상기 SL 송신 자원을 결정하는 단계는 무작위 (random)로 결정되는 UE.
- 제7항에 있어서,상기 송수신기는 네트워크에 상기 제1 슬롯에 대한 정보를 송신하는 UE.
- 제7항에 있어서,SL-DRX on 구간은 onDuration 타이머, Inactivity 타이머 및 Retransmission 타이머 중 적어도 하나의 타이머가 구동되는 구간이고,상기 SL-DRX off 구간은 상기 SL-DRX on 구간이 아닌 구간인 UE.
- 이동통신에서의 장치(apparatus)로서,적어도 하나의 프로세서; 및명령어(instructions)를 저장하고, 상기 적어도 하나의 프로세서와 동작 가능하게(operably) 전기적으로 연결 가능한, 적어도 하나의 메모리를 포함하고,상기 명령어가 상기 적어도 하나의 프로세서에 의해 실행되는 것에 기초하여 수행되는 동작은:상기 UE가 SL-DRX off 구간에서 SL (sidelink) 신호 송신을 위한 자원 센싱을 수행하는 단계;상기 자원 센싱 결과에 기초하여, SL 송신 자원을 결정하는 단계;상기 UE의 SL-DRX off 상태와 상기 UE의 SL-DRX on 상태 간 변경(transition)을 수행하는 단계;상기 UE의 상기 SL-DRX on 상태에서 상기 SL 송신 자원을 통해 다른 UE로 SL 신호를 송신하는 단계; 및기지국과 Uu link (Uplink and downlink)신호를 송수신하는 단계를 포함하고,상기 자원 센싱에 의해 제1 슬롯에 간섭 (interruption)이 발생하고,상기 변경 (transition)에 의해 제2 슬롯에 간섭 (interruption)이 발생하고,상기 제1 슬롯 및 상기 제2 슬롯에서 상기 단말은 상기 Uu link 신호의 송수신을 건너뛰는 장치.
- 명령어들을 기록하고 있는 비휘발성(non-volatile) 컴퓨터 판독가능 저장 매체로서,상기 명령어들은, 하나 이상의 프로세서들에 의해 실행될 때, 상기 하나 이상의 프로세서들로 하여금:상기 UE가 SL-DRX off 구간에서 SL (sidelink) 신호 송신을 위한 자원 센싱을 수행하는 단계;상기 자원 센싱 결과에 기초하여, SL 송신 자원을 결정하는 단계;상기 UE의 SL-DRX off 상태와 상기 UE의 SL-DRX on 상태 간 변경(transition)을 수행하는 단계;상기 UE의 상기 SL-DRX on 상태에서 상기 SL 송신 자원을 통해 다른 UE로 SL 신호를 송신하는 단계; 및기지국과 Uu link (Uplink and downlink)신호를 송수신하는 단계를 포함하고,상기 자원 센싱에 의해 제1 슬롯에 간섭 (interruption)이 발생하고,상기 변경 (transition)에 의해 제2 슬롯에 간섭 (interruption)이 발생하고,상기 제1 슬롯 및 상기 제2 슬롯에서 상기 단말은 상기 Uu link 신호의 송수신을 건너뛰는비휘발성 컴퓨터 저장 매체.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22881335.8A EP4418780A4 (en) | 2021-10-13 | 2022-10-12 | DRX SL MANAGEMENT |
| US18/698,289 US20250081210A1 (en) | 2021-10-13 | 2022-10-12 | Management of sl drx |
| CN202280068210.7A CN118140548A (zh) | 2021-10-13 | 2022-10-12 | Sl drx的管理 |
| JP2024522249A JP2024538093A (ja) | 2021-10-13 | 2022-10-12 | Sl drx管理 |
| KR1020247010613A KR20240076790A (ko) | 2021-10-13 | 2022-10-12 | Sl drx 관리 |
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| KR10-2021-0136119 | 2021-10-13 | ||
| KR20210136119 | 2021-10-13 |
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| EP (1) | EP4418780A4 (ko) |
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|---|---|---|---|---|
| WO2021119474A1 (en) * | 2019-12-13 | 2021-06-17 | Convida Wireless, Llc | Nr sidelink discontinuous reception |
| WO2021163527A1 (en) * | 2020-02-12 | 2021-08-19 | Idac Holdings, Inc. | Methods for performing discontinuous reception on sidelink |
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| WO2021146940A1 (en) * | 2020-01-21 | 2021-07-29 | Lenovo (Beijing) Limited | Method and apparatus for power saving on nr sidelink |
| KR20220126759A (ko) * | 2020-01-21 | 2022-09-16 | 에프쥐 이노베이션 컴퍼니 리미티드 | 사이드링크 패킷 교환 동작을 위한 방법 및 사용자 장비 |
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- 2022-10-12 KR KR1020247010613A patent/KR20240076790A/ko active Pending
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021119474A1 (en) * | 2019-12-13 | 2021-06-17 | Convida Wireless, Llc | Nr sidelink discontinuous reception |
| WO2021163527A1 (en) * | 2020-02-12 | 2021-08-19 | Idac Holdings, Inc. | Methods for performing discontinuous reception on sidelink |
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| Title |
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| HUAWEI, HISILICON: "Discussion on SL communication impact on Uu DRX", 3GPP DRAFT; R2-2104113, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic Meeting; 20210412 - 20210420, 2 April 2021 (2021-04-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052175377 * |
| LG ELECTRONICS: "Discussion on resource allocation for power saving", 3GPP DRAFT; R1-2103378, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210412 - 20210420, 7 April 2021 (2021-04-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052178121 * |
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| See also references of EP4418780A4 * |
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| Publication number | Publication date |
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| CN118140548A (zh) | 2024-06-04 |
| JP2024538093A (ja) | 2024-10-18 |
| EP4418780A1 (en) | 2024-08-21 |
| EP4418780A4 (en) | 2025-10-15 |
| US20250081210A1 (en) | 2025-03-06 |
| KR20240076790A (ko) | 2024-05-30 |
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