WO2020226404A1 - Nr v2x에서 위치 정보를 전송하는 방법 및 장치 - Google Patents
Nr v2x에서 위치 정보를 전송하는 방법 및 장치 Download PDFInfo
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- WO2020226404A1 WO2020226404A1 PCT/KR2020/005914 KR2020005914W WO2020226404A1 WO 2020226404 A1 WO2020226404 A1 WO 2020226404A1 KR 2020005914 W KR2020005914 W KR 2020005914W WO 2020226404 A1 WO2020226404 A1 WO 2020226404A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
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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
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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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 signaling, 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
- 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
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
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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
Definitions
- the present disclosure relates to a wireless communication system.
- a sidelink refers to a communication method in which a direct link is established between terminals (User Equipment, UEs) to directly exchange voice or data between terminals without going through a base station (BS).
- SL is being considered as a solution to the burden on the base station due to rapidly increasing data traffic.
- V2X vehicle-to-everything refers to a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure-built objects through wired/wireless communication.
- V2X can be divided into four types: vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-network (V2N), and vehicle-to-pedestrian (V2P).
- V2X communication may be provided through a PC5 interface and/or a Uu interface.
- next-generation radio access technology in consideration of the like may be referred to as a new radio access technology (RAT) or a new radio (NR).
- RAT new radio access technology
- NR new radio
- V2X vehicle-to-everything
- FIG. 1 is a diagram for explaining by comparing V2X communication based on RAT before NR and V2X communication based on NR.
- the embodiment of FIG. 1 may be combined with various embodiments of the present disclosure.
- V2X communication a method of providing safety services based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperative Awareness Message), and DENM (Decentralized Environmental Notification Message) in RAT before NR
- BSM Basic Safety Message
- CAM Cooperative Awareness Message
- DENM Decentralized Environmental Notification Message
- the V2X message may include location information, dynamic information, attribute information, and the like.
- the terminal may transmit a periodic message type CAM and/or an event triggered message type DENM to another terminal.
- the CAM may include basic vehicle information such as dynamic state information of the vehicle such as direction and speed, vehicle static data such as dimensions, external lighting conditions, and route history.
- the terminal may broadcast the CAM, and the latency of the CAM may be less than 100 ms.
- the terminal may generate a DENM and transmit it to another terminal.
- all vehicles within the transmission range of the terminal may receive CAM and/or DENM.
- DENM may have a higher priority than CAM.
- V2X scenarios may include vehicle platooning, advanced driving, extended sensors, remote driving, and the like.
- vehicles can dynamically form groups and move together. For example, in order to perform platoon operations based on vehicle platooning, vehicles belonging to the group may receive periodic data from the leading vehicle. For example, vehicles belonging to the group may use periodic data to reduce or widen the distance between vehicles.
- the vehicle can be semi-automated or fully automated.
- each vehicle may adjust trajectories or maneuvers based on data acquired from a local sensor of a proximity vehicle and/or a proximity logical entity.
- each vehicle may share a driving intention with nearby vehicles.
- raw data or processed data, or live video data acquired through local sensors may be used as vehicles, logical entities, pedestrian terminals, and / Or can be exchanged between V2X application servers.
- the vehicle can recognize an improved environment than the environment that can be detected using its own sensor.
- a remote driver or a V2X application may operate or control the remote vehicle.
- a route can be predicted such as in public transportation
- cloud computing-based driving may be used for operation or control of the remote vehicle.
- access to a cloud-based back-end service platform may be considered for remote driving.
- V2X communication based on NR a method of specifying service requirements for various V2X scenarios such as vehicle platooning, improved driving, extended sensors, and remote driving is being discussed in V2X communication based on NR.
- the receiving terminal may calculate the distance between itself and the transmitting terminal based on the location information of the transmitting terminal. Thereafter, when the distance between the receiving terminal and the transmitting terminal is less than or equal to the minimum required communication range, the receiving terminal may transmit SL HARQ feedback. For the above reasons, the receiving terminal needs to efficiently acquire the location of the transmitting terminal.
- a method for a first device to perform wireless communication. The method includes receiving information related to a zone from a second device through a physical sidelink shared channel (PSSCH); Obtaining information related to a distance based on a center position of the zone and a position of the first device; And determining whether to transmit HARQ feedback for the PSSCH to the second device based on the distance-related information.
- PSSCH physical sidelink shared channel
- a first device for performing wireless communication includes: one or more memories for storing instructions; One or more transceivers; And one or more processors connecting the one or more memories and the one or more transceivers.
- the one or more processors execute the instructions to receive zone-related information from a second device through a physical sidelink shared channel (PSSCH); Acquiring distance-related information based on the center position of the zone and the position of the first device; And whether to transmit HARQ feedback for the PSSCH to the second device based on the distance-related information.
- PSSCH physical sidelink shared channel
- the terminal can efficiently perform SL communication.
- FIG. 1 is a diagram for explaining by comparing V2X communication based on RAT before NR and V2X communication based on NR.
- FIG. 2 shows a structure of an NR system according to an embodiment of the present disclosure.
- 3 illustrates functional division between NG-RAN and 5GC according to an embodiment of the present disclosure.
- FIG. 4 illustrates a radio protocol architecture according to an embodiment of the present disclosure.
- FIG. 5 shows a structure of a radio frame of NR according to an embodiment of the present disclosure.
- FIG. 6 shows a slot structure of an NR frame according to an embodiment of the present disclosure.
- FIG 7 shows an example of a BWP according to an embodiment of the present disclosure.
- FIG. 8 illustrates a radio protocol architecture for SL communication according to an embodiment of the present disclosure.
- FIG. 9 shows a terminal for performing V2X or SL communication according to an embodiment of the present disclosure.
- FIG. 10 illustrates a procedure for a terminal to perform V2X or SL communication according to a transmission mode according to an embodiment of the present disclosure.
- FIG 11 illustrates three cast types according to an embodiment of the present disclosure.
- FIG. 12 illustrates a method for a receiving terminal to perform an SL HARQ feedback operation based on a communication range requirement according to an embodiment of the present disclosure.
- FIG. 13 illustrates a procedure for a receiving terminal to perform a HARQ operation based on a distance from a transmitting terminal according to an embodiment of the present disclosure.
- FIG. 14 illustrates a method for a receiving terminal to obtain a distance between the receiving terminal and a transmitting terminal according to an embodiment of the present disclosure.
- 15 and 16 illustrate a method for a receiving terminal to obtain a distance between a receiving terminal and a transmitting terminal when a plurality of zones having the same zone ID exist around a receiving terminal, according to an embodiment of the present disclosure.
- FIG. 17 illustrates a method for a transmitting terminal to transmit location information to a receiving terminal according to an embodiment of the present disclosure.
- FIG. 18 illustrates a method for a receiving terminal to receive location information from a transmitting terminal according to an embodiment of the present disclosure.
- FIG. 19 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure.
- 20 illustrates a method for a second device to perform wireless communication according to an embodiment of the present disclosure.
- 21 shows a communication system 1 according to an embodiment of the present disclosure.
- FIG. 22 illustrates a wireless device according to an embodiment of the present disclosure.
- FIG. 23 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure.
- FIG. 24 illustrates a wireless device according to an embodiment of the present disclosure.
- 25 illustrates a portable device according to an embodiment of the present disclosure.
- 26 illustrates a vehicle or an autonomous vehicle according to an embodiment of the present disclosure.
- a or B (A or B) may mean “only A”, “only B”, or “both A and B”.
- a or B (A or B) may be interpreted as “A and/or B (A and/or B)”.
- A, B or C (A, B or C) means “only A”, “only B”, “only C”, or "any and all combinations of A, B and C ( It can mean any combination of A, B and C)”.
- a slash (/) or comma used in the present 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 “at least one A and B (at least one of A and B)" can be interpreted the same.
- At least one of A, B and C means “only A", “only B", “only C", or "A, B and C May mean any combination of A, B and C”.
- at least one of A, B or C at least one of A, B or C
- at least one of A, B and/or C at least one of A, B and/or C
- parentheses used in the present specification may mean "for example”. Specifically, when displayed as “control information (PDCCH)”, “PDCCH” may be proposed as an example of “control information”. In other words, “control information” of the present specification is not limited to “PDCCH”, and “PDDCH” may be proposed as an example of "control information”. In addition, even when indicated as “control information (ie, PDCCH)”, “PDCCH” may be proposed as an example of “control information”.
- 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
- CDMA may be implemented with a radio technology such as universal terrestrial radio access (UTRA) or CDMA2000.
- TDMA may be implemented with 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 wireless technologies such as IEEE (institute of electrical and electronics engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (evolved UTRA).
- IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with a system based on IEEE 802.16e.
- UTRA is part of a universal mobile telecommunications system (UMTS).
- 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) that uses evolved-UMTS terrestrial radio access (E-UTRA), and employs OFDMA in downlink and SC in uplink.
- -Adopt FDMA is an evolution of 3GPP LTE.
- 5G NR is the successor technology of LTE-A, and is a new clean-slate type mobile communication system with features such as high performance, low latency, and high availability.
- 5G NR can utilize all available spectrum resources, from low frequency bands of less than 1 GHz to intermediate frequency bands of 1 GHz to 10 GHz and high frequency (millimeter wave) bands of 24 GHz or higher.
- 5G NR is mainly described, but the technical idea according to an embodiment of the present disclosure is not limited thereto.
- FIG. 2 shows a structure of an NR system according to an embodiment of the present disclosure.
- the embodiment of FIG. 2 may be combined with various embodiments of the present disclosure.
- a Next Generation-Radio Access Network may include a base station 20 that provides a user plane and a control plane protocol termination to a terminal 10.
- the base station 20 may include a next generation-Node B (gNB) and/or an evolved-NodeB (eNB).
- the terminal 10 may be fixed or mobile, and other terms such as MS (Mobile Station), UT (User Terminal), SS (Subscriber Station), MT (Mobile Terminal), Wireless Device, etc. It can be called as
- the base station may be a fixed station communicating with the terminal 10, and may be referred to as other terms such as a base transceiver system (BTS) and an access point.
- BTS base transceiver system
- the embodiment of FIG. 2 illustrates a case where only gNB is included.
- the base station 20 may be connected to each other through an Xn interface.
- the base station 20 may be connected to a 5G Core Network (5GC) through an NG interface.
- the base station 20 may be connected to an access and mobility management function (AMF) 30 through an NG-C interface, and may be connected to a user plane function (UPF) 30 through an NG-U interface.
- AMF access and mobility management function
- UPF user plane function
- FIG. 3 illustrates functional division between NG-RAN and 5GC according to an embodiment of the present disclosure.
- the embodiment of FIG. 3 may be combined with various embodiments of the present disclosure.
- the gNB is inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control (Connection Mobility Control), radio admission control (Radio Admission Control), measurement setting and provision Functions such as (Measurement configuration & Provision) and dynamic resource allocation may be provided.
- AMF can provide functions such as non-access stratum (NAS) security and idle state mobility processing.
- UPF may provide functions such as mobility anchoring and Protocol Data Unit (PDU) processing.
- SMF Session Management Function
- the layers of the Radio Interface Protocol between the terminal and the network are L1 (Layer 1) based on the lower 3 layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. It can be divided into L2 (second layer) and L3 (third layer).
- L2 second layer
- L3 third layer
- the physical layer belonging to the first layer provides an information transfer service using a physical channel
- the radio resource control (RRC) layer located in the third layer is a radio resource between the terminal and the network. It plays the role of controlling To this end, the RRC layer exchanges RRC messages between the terminal and the base station.
- FIG. 4 illustrates a radio protocol architecture according to an embodiment of the present disclosure.
- the embodiment of FIG. 4 may be combined with various embodiments of the present disclosure.
- (a) of FIG. 4 shows a structure of a radio protocol for a user plane
- (b) of FIG. 4 shows a structure of a radio protocol for a control plane.
- the user plane is a protocol stack for transmitting user data
- the control plane is a protocol stack for transmitting control signals.
- a physical layer provides an information transmission service to an upper layer using a physical channel.
- the physical layer is connected to an upper layer, a medium access control (MAC) layer, through a transport channel. Data is moved between the MAC layer and the physical layer through the transport channel. Transmission channels are classified according to how and with what characteristics data is transmitted over the air interface.
- MAC medium access control
- the physical channel may be modulated in an Orthogonal Frequency Division Multiplexing (OFDM) scheme, and uses time and frequency as radio resources.
- OFDM Orthogonal Frequency Division Multiplexing
- the MAC layer provides a service to an upper layer, a radio link control (RLC) layer, through a logical channel.
- the MAC layer provides a mapping function from a plurality of logical channels to a plurality of transport channels.
- the MAC layer provides a logical channel multiplexing function by mapping a plurality of logical channels to a single transport channel.
- the MAC sublayer provides a data transmission service on a logical channel.
- the RLC layer performs concatenation, segmentation, and reassembly of RLC Service Data Units (SDUs).
- SDUs RLC Service Data Units
- the RLC layer has a Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode. , AM).
- TM Transparent Mode
- UM Unacknowledged Mode
- AM Acknowledged Mode.
- AM RLC provides error correction through automatic repeat request (ARQ).
- the Radio Resource Control (RRC) layer is defined only in the control plane.
- the RRC layer is in charge of controlling logical channels, transport channels, and physical channels in relation to configuration, re-configuration, and release of radio bearers.
- RB refers to a logical path provided by a first layer (physical layer or PHY layer) and a second layer (MAC layer, RLC layer, and Packet Data Convergence Protocol (PDCP) layer) for data transfer between the terminal and the network.
- MAC layer physical layer
- RLC layer Radio Link Control Protocol
- PDCP Packet Data Convergence Protocol
- the functions of the PDCP layer in the user plane include transmission of user data, header compression, and ciphering.
- the functions of the PDCP layer in the control plane include transmission of control plane data and encryption/integrity protection.
- the SDAP Service Data Adaptation Protocol
- the SDAP layer performs mapping between a QoS flow and a data radio bearer, and marking a QoS flow identifier (ID) in downlink and uplink packets.
- ID QoS flow identifier
- Establishing the RB refers to a process of defining characteristics of a radio protocol layer and channel to provide a specific service, and setting specific parameters and operation methods for each.
- the RB can be further divided into two types: Signaling Radio Bearer (SRB) and Data Radio Bearer (DRB).
- SRB is used as a path for transmitting RRC messages in the control plane
- DRB is used as a path for transmitting user data in the user plane.
- the terminal When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the base station, the terminal is in the RRC_CONNECTED state, otherwise it is in the RRC_IDLE state.
- the RRC_INACTIVE state is additionally defined, and the terminal in the RRC_INACTIVE state can release the connection with the base station while maintaining the connection with the core network.
- a downlink transmission channel for transmitting data from a network to a terminal there is a broadcast channel (BCH) for transmitting system information and a downlink shared channel (SCH) for transmitting user traffic or control messages.
- BCH broadcast channel
- SCH downlink shared channel
- downlink multicast or broadcast service traffic or control messages they may be transmitted through a downlink SCH or a separate downlink multicast channel (MCH).
- RACH random access channel
- SCH uplink shared channel
- BCCH Broadcast Control Channel
- PCCH Paging Control Channel
- CCCH Common Control Channel
- MCCH Multicast Control Channel
- MTCH Multicast Traffic
- the physical channel is composed of several OFDM symbols in the time domain and several sub-carriers in the frequency domain.
- One sub-frame is composed of a plurality of OFDM symbols in the time domain.
- a resource block is a resource allocation unit and is composed of a plurality of OFDM symbols and a plurality of sub-carriers.
- each subframe may use specific subcarriers of specific OFDM symbols (eg, the first OFDM symbol) of the corresponding subframe for the PDCCH (Physical Downlink Control Channel), that is, the L1/L2 control channel.
- TTI Transmission Time Interval
- FIG. 5 shows a structure of a radio frame of NR according to an embodiment of the present disclosure.
- the embodiment of FIG. 5 may be combined with various embodiments of the present disclosure.
- radio frames may be used in uplink and downlink transmission in NR.
- the radio frame has a length of 10 ms and may be defined as two 5 ms half-frames (HF).
- the half-frame may include five 1ms subframes (Subframe, SF).
- a subframe may be divided into one or more slots, and the number of slots within a subframe may be determined according to a subcarrier spacing (SCS).
- SCS subcarrier spacing
- Each slot may include 12 or 14 OFDM(A) symbols according to a cyclic prefix (CP).
- CP cyclic prefix
- each slot may include 14 symbols.
- each slot may include 12 symbols.
- the symbol may include an OFDM symbol (or CP-OFDM symbol), a Single Carrier-FDMA (SC-FDMA) symbol (or a Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM) symbol).
- Table 1 below shows the number of symbols per slot (N slot symb ), the number of slots per frame (N frame, u slot ) and the number of slots per subframe (N) according to the SCS setting (u) when normal CP is used. subframe,u slot ) is illustrated.
- Table 2 illustrates the number of symbols per slot, the number of slots per frame, and the number of slots per subframe according to the SCS when the extended CP is used.
- 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, subframe, slot, or TTI
- TU Time Unit
- multiple numerology or SCS to support various 5G services may be supported.
- SCS when the SCS is 15 kHz, a wide area in traditional cellular bands can be supported, and when the SCS is 30 kHz/60 kHz, a dense-urban, lower delay latency) and a wider carrier bandwidth may be supported.
- SCS when the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz may be supported to overcome phase noise.
- the NR frequency band can be defined as two types of frequency ranges.
- the two types of frequency ranges may be FR1 and FR2.
- the numerical value of the frequency range may be changed, for example, the two types of frequency ranges may be shown in Table 3 below.
- FR1 may mean "sub 6GHz range”
- FR2 may mean "above 6GHz range” and may be called a millimeter wave (mmW).
- mmW millimeter wave
- FR1 may include a band of 410MHz to 7125MHz as shown in Table 4 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 can be used for a variety of purposes, and can be used, for example, for communication for vehicles (eg, autonomous driving).
- FIG. 6 shows a slot structure of an NR frame according to an embodiment of the present disclosure.
- the embodiment of FIG. 6 may be combined with various embodiments of the present disclosure.
- a 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 may include 12 symbols. Alternatively, in the case of a normal CP, one slot may include 7 symbols, but in the case of an extended CP, one slot may include 6 symbols.
- the carrier includes a plurality of subcarriers in the frequency domain.
- Resource Block (RB) may be defined as a plurality of (eg, 12) consecutive subcarriers in the frequency domain.
- BWP Bandwidth Part
- P Physical Resource Block
- the carrier may include up to N (eg, 5) BWPs. Data communication can be performed through an activated BWP.
- Each element may be referred to as a resource element (RE) in the resource grid, and one complex symbol may be mapped.
- the radio interface between the terminal and the terminal or the radio interface between the terminal and the network may be composed of an L1 layer, an L2 layer, and an L3 layer.
- the L1 layer may mean a physical layer.
- the L2 layer may mean at least one of a MAC layer, an RLC layer, a PDCP layer, and an SDAP layer.
- the L3 layer may mean an RRC layer.
- BWP Bandwidth Part
- BWP Bandwidth Part
- PRB physical resource block
- the PRB may be selected from a contiguous subset of a common resource block (CRB) for a given neurology on a given carrier.
- CRB common resource block
- the reception bandwidth and the transmission bandwidth of the terminal need not be as large as the bandwidth of the cell, and the reception bandwidth and the transmission bandwidth of the terminal can be adjusted.
- the network/base station may inform the terminal of bandwidth adjustment.
- the terminal may receive information/settings for bandwidth adjustment from the network/base station.
- the terminal may perform bandwidth adjustment based on the received information/settings.
- the bandwidth adjustment may include reducing/enlarging the bandwidth, changing the position of the bandwidth, or changing the subcarrier spacing of the bandwidth.
- bandwidth can be reduced during periods of low activity to save power.
- the location of the bandwidth can move in the frequency domain.
- the location of the bandwidth can be moved in the frequency domain to increase scheduling flexibility.
- subcarrier spacing of the bandwidth may be changed.
- the subcarrier spacing of the bandwidth can be changed to allow different services.
- a subset of the total cell bandwidth of a cell may be referred to as a bandwidth part (BWP).
- the BA may be performed by the base station/network setting the BWP to the terminal and notifying the terminal of the currently active BWP among the BWPs in which the base station/network is set.
- the BWP may be at least one of an active BWP, an initial BWP, and/or a default BWP.
- the terminal may not monitor downlink radio link quality in DL BWPs other than active DL BWPs on a primary cell (PCell).
- the UE may not receive PDCCH, PDSCH, or CSI-RS (except for RRM) outside of the active DL BWP.
- the UE may not trigger a CSI (Channel State Information) report for an inactive DL BWP.
- the UE may not transmit PUCCH or PUSCH outside the active UL BWP.
- the initial BWP may be given as a set of consecutive RBs for RMSI CORESET (set by PBCH).
- the initial BWP may be given by the SIB for a random access procedure.
- the default BWP may be set by an upper layer.
- the initial value of the default BWP may be an initial DL BWP. For energy saving, if the terminal does not detect the DCI for a certain period of time, the terminal may switch the active BWP of the terminal to the default BWP.
- BWP can be defined for SL.
- the same SL BWP can be used for transmission and reception.
- a transmitting terminal may transmit an SL channel or an SL signal on a specific BWP
- a receiving terminal may receive an SL channel or an SL signal on the specific BWP.
- the SL BWP may be defined separately from the Uu BWP, and the SL BWP may have separate configuration signaling from the Uu BWP.
- the terminal may receive configuration for SL BWP from the base station/network.
- SL BWP may be configured (in advance) for out-of-coverage NR V2X terminal and RRC_IDLE terminal in the carrier. For the UE in the RRC_CONNECTED mode, at least one SL BWP may be activated in the carrier.
- FIG. 7 shows an example of a BWP according to an embodiment of the present disclosure.
- the embodiment of FIG. 7 may be combined with various embodiments of the present disclosure. In the embodiment of FIG. 7, it is assumed that there are three BWPs.
- a common resource block may be a carrier resource block numbered from one end of the carrier band to the other.
- the PRB may be a numbered resource block within each BWP.
- Point A may indicate a common reference point for a resource block grid.
- the BWP may be set by point A, an offset from point A (N start BWP ), and a bandwidth (N size BWP ).
- point A may be an external reference point of a PRB of a carrier in which subcarriers 0 of all neurons (eg, all neurons supported by a network in a corresponding carrier) are aligned.
- the offset may be the PRB interval between point A and the lowest subcarrier in a given neuronology.
- the bandwidth may be the number of PRBs in a given neurology.
- V2X or SL communication will be described.
- FIG. 8 illustrates a radio protocol architecture for SL communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 8 may be combined with various embodiments of the present disclosure.
- FIG. 8(a) shows a user plane protocol stack
- FIG. 8(b) shows a control plane protocol stack.
- SL synchronization signal Sidelink Synchronization Signal, SLSS
- SLSS Segment Synchronization Signal
- SLSS is an SL-specific sequence and may include a Primary Sidelink Synchronization Signal (PSSS) and a Secondary Sidelink Synchronization Signal (SSSS).
- PSSS Primary Sidelink Synchronization Signal
- SSSS Secondary Sidelink Synchronization Signal
- S-PSS Secondary Sidelink Primary Synchronization Signal
- S-SSS Secondary Synchronization Signal
- length-127 M-sequences may be used for S-PSS
- length-127 Gold sequences may be used for S-SSS.
- the terminal may detect an initial signal using S-PSS and may acquire synchronization.
- the UE may acquire detailed synchronization using S-PSS and S-SSS, and may detect a synchronization signal ID.
- the PSBCH Physical Sidelink Broadcast Channel
- the PSBCH may be a (broadcast) channel through which basic (system) information that the terminal needs to know first before transmitting and receiving SL signals is transmitted.
- the basic information may include information related to SLSS, duplex mode (DM), TDD UL/DL (Time Division Duplex Uplink/Downlink) configuration, resource pool related information, type of application related to SLSS, It may be a subframe offset, broadcast information, and the like.
- the payload size of the PSBCH may be 56 bits including a 24-bit CRC.
- S-PSS, S-SSS, and PSBCH may be included in a block format supporting periodic transmission (e.g., SL SS (Synchronization Signal) / PSBCH block, hereinafter S-SSB (Sidelink-Synchronization Signal Block)).
- the S-SSB may have the same numanology (i.e., SCS and CP length) as the PSCCH (Physical Sidelink Control Channel)/PSSCH (Physical Sidelink Shared Channel) in the carrier, and the transmission bandwidth is (pre-) set SL Sidelink BWP).
- the bandwidth of the S-SSB may be 11 Resource Block (RB).
- the PSBCH can span 11 RBs.
- the frequency position of the S-SSB may be set (in advance). Therefore, the terminal does not need to perform hypothesis detection in frequency to discover the S-SSB in the carrier.
- FIG. 9 shows a terminal for performing V2X or SL communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 9 may be combined with various embodiments of the present disclosure.
- terminal in V2X or SL communication, the term terminal may mainly mean a user terminal.
- the base station when network equipment such as a base station transmits and receives signals according to a communication method between terminals, the base station may also be regarded as a kind of terminal.
- terminal 1 may be the first device 100 and terminal 2 may be the second device 200.
- terminal 1 may select a resource unit corresponding to a specific resource from within a resource pool that means a set of a series of resources.
- UE 1 may transmit an SL signal using the resource unit.
- terminal 2 which is a receiving terminal, may be configured with a resource pool through which terminal 1 can transmit a signal, and may detect a signal of terminal 1 in the resource pool.
- the base station may inform the terminal 1 of the resource pool.
- another terminal notifies the resource pool to the terminal 1, or the terminal 1 may use a preset resource pool.
- the resource pool may be composed of a plurality of resource units, and each terminal may select one or a plurality of resource units and use it for transmitting its own SL signal.
- the transmission mode may be referred to as a mode or a resource allocation mode.
- the transmission mode in LTE may be referred to as an LTE transmission mode
- NR the transmission mode may be referred to as an NR resource allocation mode.
- (a) of FIG. 10 shows a terminal operation related to LTE transmission mode 1 or LTE transmission mode 3.
- (a) of FIG. 10 shows a terminal operation related to NR resource allocation mode 1.
- LTE transmission mode 1 may be applied to general SL communication
- LTE transmission mode 3 may be applied to V2X communication.
- (b) of FIG. 10 shows a terminal operation related to LTE transmission mode 2 or LTE transmission mode 4.
- (b) of FIG. 10 shows a terminal operation related to NR resource allocation mode 2.
- the base station may schedule SL resources to be used by the terminal for SL transmission.
- the base station may perform resource scheduling to UE 1 through PDCCH (more specifically, Downlink Control Information (DCI)), and UE 1 may perform V2X or SL communication with UE 2 according to the resource scheduling.
- PDCCH more specifically, Downlink Control Information (DCI)
- DCI Downlink Control Information
- UE 1 may perform V2X or SL communication with UE 2 according to the resource scheduling.
- DCI Downlink Control Information
- UE 1 may perform V2X or SL communication with UE 2 according to the resource scheduling.
- SCI Sidelink Control Information
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink Shared Channel
- the terminal may determine the SL transmission resource within the SL resource set by the base station/network or the SL resource set in advance.
- the set SL resource or the preset SL resource may be a resource pool.
- the terminal can autonomously select or schedule a resource for SL transmission.
- the terminal may perform SL communication by selecting a resource from the set resource pool by itself.
- the terminal may perform a sensing and resource (re) selection procedure to select a resource by itself within the selection window.
- the sensing may be performed on a subchannel basis.
- UE 1 may transmit SCI to UE 2 through PSCCH and then transmit the SCI-based data to UE 2 through PSSCH.
- FIG. 11 illustrates three cast types according to an embodiment of the present disclosure.
- the embodiment of FIG. 11 may be combined with various embodiments of the present disclosure.
- FIG. 11(a) shows a broadcast type SL communication
- FIG. 11(b) shows a unicast type SL communication
- FIG. 11(c) shows a groupcast type SL communication.
- a terminal may perform one-to-one communication with another terminal.
- a terminal may perform SL communication with one or more terminals in a group to which it belongs.
- SL groupcast communication may be replaced with SL multicast communication, SL one-to-many communication, or the like.
- SCI sidelink control information
- Control information transmitted by the base station to the terminal through the PDCCH is referred to as DCI (Downlink Control Information), while control information transmitted by the terminal to another terminal through the PSCCH may be referred to as SCI.
- DCI Downlink Control Information
- SCI Downlink Control Information
- the UE may know the start symbol of the PSCCH and/or the number of symbols of the PSCCH before decoding the PSCCH.
- SCI may include SL scheduling information.
- the terminal may transmit at least one SCI to another terminal in order to schedule the PSSCH.
- one or more SCI formats may be defined.
- the transmitting terminal may transmit the SCI to the receiving terminal on the PSCCH.
- the receiving terminal may decode one SCI to receive the PSSCH from the transmitting terminal.
- the transmitting terminal may transmit two consecutive SCIs (eg, 2-stage SCI) on the PSCCH and/or PSSCH to the receiving terminal.
- the receiving terminal may decode two consecutive SCIs (eg, 2-stage SCI) to receive the PSSCH from the transmitting terminal.
- the SCI including the first SCI configuration field group is referred to as the first SCI or 1 st SCI. It may be referred to as the second may be referred to as a second SCI or SCI 2 nd the SCI including the SCI configuration field group.
- the transmitting terminal may transmit the first SCI to the receiving terminal through the PSCCH.
- the transmitting terminal may transmit the second SCI to the receiving terminal on the PSCCH and/or PSSCH.
- the second SCI may be transmitted to the receiving terminal through the (independent) PSCCH, or may be piggybacked with data through the PSSCH and transmitted.
- two consecutive SCIs may be applied for different transmissions (eg, unicast, broadcast, or groupcast).
- the transmitting terminal may transmit some or all of the following information to the receiving terminal through SCI.
- the transmitting terminal may transmit some or all of the following information to the receiving terminal through the first SCI and/or the second SCI.
- PSCCH-related resource allocation information for example, time/frequency resource location/number, resource reservation information (eg, period), and/or
- SL CSI transmission indicator (or SL (L1) RSRP (and/or SL (L1) RSRQ and/or SL (L1) RSSI) information transmission indicator), and/or
- -Reference signal (e.g., DMRS, etc.) information related to decoding and/or channel estimation of data transmitted through the PSSCH, for example, information related to the pattern of (time-frequency) mapping resources of the DMRS, rank ) Information, antenna port index information;
- the first SCI may include information related to channel sensing.
- the receiving terminal may decode the second SCI using the PSSCH DMRS.
- a polar code used for the PDCCH may be applied to the second SCI.
- the payload size of the first SCI may be the same for unicast, groupcast and broadcast.
- the receiving terminal does not need to perform blind decoding of the second SCI.
- the first SCI may include scheduling information of the second SCI.
- the PSCCH is SCI, the first SCI and/or the first SCI. It may be replaced/substituted with at least one of 2 SCIs. And/or, for example, SCI may be replaced/substituted with at least one of PSCCH, first SCI, and/or second SCI. And/or, for example, since the transmitting terminal can transmit the second SCI to the receiving terminal through the PSSCH, the PSSCH can be replaced/replaced with the second SCI.
- HARQ hybrid automatic repeat request
- An error compensation scheme for securing the reliability of communication may include a Forward Error Correction (FEC) scheme and an Automatic Repeat Request (ARQ) scheme.
- FEC Forward Error Correction
- ARQ Automatic Repeat Request
- an error at the receiving end can be corrected by adding an extra error correction code to information bits.
- the FEC method has the advantage that time delay is small and information exchanged between the transmitting and receiving ends is not required, there is a disadvantage that the system efficiency is deteriorated in a good channel environment.
- the ARQ method can increase transmission reliability, there is a disadvantage in that a time delay occurs and system efficiency decreases in a poor channel environment.
- the HARQ (Hybrid Automatic Repeat Request) method is a combination of FEC and ARQ, and it is possible to increase performance by checking whether data received by the physical layer contains an undecodeable error and requesting retransmission when an error occurs.
- HARQ feedback and HARQ combining in the physical layer may be supported.
- the receiving terminal when the receiving terminal operates in the resource allocation mode 1 or 2, the receiving terminal can receive the PSSCH from the transmitting terminal, and the receiving terminal can receive Sidelink Feedback Control Information (SFCI) through a Physical Sidelink Feedback Channel (PSFCH).
- SFCI Sidelink Feedback Control Information
- PSFCH Physical Sidelink Feedback Channel
- HARQ feedback for PSSCH may be transmitted to the transmitting terminal using the format.
- SL HARQ feedback may be enabled for unicast.
- the receiving terminal in a non-CBG (non-Code Block Group) operation, when the receiving terminal decodes the PSCCH targeting the receiving terminal, and the receiving terminal successfully decodes the transport block related to the PSCCH, the receiving terminal HARQ-ACK can be generated. And, the receiving terminal may transmit the HARQ-ACK to the transmitting terminal.
- the receiving terminal after the receiving terminal decodes the PSCCH targeting the receiving terminal, if the receiving terminal does not successfully decode the transport block related to the PSCCH, the receiving terminal may generate HARQ-NACK. And, the receiving terminal may transmit HARQ-NACK to the transmitting terminal.
- SL HARQ feedback may be enabled for groupcast.
- two HARQ feedback options may be supported for groupcast.
- Groupcast option 1 After the receiving terminal decodes the PSCCH targeting the receiving terminal, if the receiving terminal fails to decode the transport block related to the PSCCH, the receiving terminal sends HARQ-NACK through PSFCH. It can be transmitted to the transmitting terminal. On the other hand, if the receiving terminal decodes the PSCCH targeting the receiving terminal, and the receiving terminal successfully decodes the transport block related to the PSCCH, the receiving terminal may not transmit HARQ-ACK to the transmitting terminal.
- Groupcast option 2 After the receiving terminal decodes the PSCCH targeting the receiving terminal, if the receiving terminal fails to decode the transport block related to the PSCCH, the receiving terminal sends HARQ-NACK through the PSFCH. It can be transmitted to the transmitting terminal. And, when the receiving terminal decodes the PSCCH targeting the receiving terminal, and the receiving terminal successfully decodes the transport block related to the PSCCH, the receiving terminal may transmit HARQ-ACK to the transmitting terminal through the PSFCH.
- all terminals performing groupcast communication may share PSFCH resources.
- a terminal belonging to the same group may transmit HARQ feedback using the same PSFCH resource.
- each terminal performing groupcast communication may use different PSFCH resources for HARQ feedback transmission.
- UEs belonging to the same group may transmit HARQ feedback using different PSFCH resources.
- the receiving terminal may determine whether to transmit the HARQ feedback to the transmitting terminal based on a TX-RX (Transmission-Reception) distance and/or RSRP.
- TX-RX Transmission-Reception
- the receiving terminal may transmit HARQ feedback for the PSSCH to the transmitting terminal.
- the receiving terminal may not transmit HARQ feedback for the PSSCH to the transmitting terminal.
- the transmitting terminal may inform the receiving terminal of the location of the transmitting terminal through SCI related to the PSSCH.
- the SCI related to the PSSCH may be a second SCI.
- the receiving terminal may estimate or obtain the TX-RX distance based on the location of the receiving terminal and the location of the transmitting terminal.
- the receiving terminal decodes the SCI related to the PSSCH to know the communication range requirements used for the PSSCH.
- the time (offset) between the PSFCH and the PSSCH may be set or may be preset.
- this can be indicated to the base station by the terminal within the coverage using the PUCCH.
- the transmitting terminal may transmit an indication to the serving base station of the transmitting terminal in a form such as SR (Scheduling Request)/BSR (Buffer Status Report), not in the form of HARQ ACK/NACK.
- SR Service Request
- BSR Buffer Status Report
- the base station can schedule the SL retransmission resource to the terminal.
- the time (offset) between the PSFCH and the PSSCH may be set or may be preset.
- the TDM between the PSCCH/PSSCH and the PSFCH may be allowed for the PSFCH format for the SL in the slot.
- a sequence-based PSFCH format having one symbol may be supported.
- the one symbol may not be an AGC interval.
- the sequence-based PSFCH format can be applied to unicast and groupcast.
- the PSFCH resource may be periodically set in an N slot period or may be set in advance.
- N may be set to one or more values.
- N can be 1, 2 or 4.
- HARQ feedback for transmission in a specific resource pool may be transmitted only through PSFCH on the specific resource pool.
- slot # (N + A) may include PSFCH resources.
- A may be the smallest integer greater than or equal to K.
- K may be the number of logical slots. In this case, K may be the number of slots in the resource pool. Or, for example, K may be the number of physical slots. In this case, K may be the number of slots inside and outside the resource pool.
- the receiving terminal in response to one PSSCH transmitted by the transmitting terminal to the receiving terminal, when the receiving terminal transmits HARQ feedback on the PSFCH resource, the receiving terminal is the PSFCH resource based on an implicit mechanism within the set resource pool.
- a frequency domain and/or a code domain of may be determined.
- the receiving terminal is among the identifiers for distinguishing each receiving terminal from a group for HARQ feedback based on a slot index related to PSCCH/PSSCH/PSFCH, a subchannel related to PSCCH/PSSCH, and/or groupcast option 2 Based on at least any one, the frequency domain and/or the code domain of the PSFCH resource may be determined. And/or, for example, the receiving terminal may determine the frequency domain and/or the code domain of the PSFCH resource based on at least one of SL RSRP, SINR, L1 source ID, and/or location information.
- the terminal can perform either HARQ feedback transmission through PSFCH or HARQ feedback reception through PSFCH based on the priority rule.
- the priority rule may be based on at least a priority indication of the related PSCCH/PSSCH.
- the terminal may select specific HARQ feedback transmission based on a priority rule.
- the priority rule may be based on at least a priority indication of the related PSCCH/PSSCH.
- the transmitting terminal may be a terminal transmitting data or control information.
- the transmitting terminal may be a terminal that transmits data or control information to a (target) receiving terminal.
- the transmitting terminal may be a terminal transmitting PSCCH and/or PSSCH.
- the transmitting terminal may be a terminal that transmits a CSI-RS for a sidelink and/or a sidelink CSI report request indicator.
- the transmitting terminal may be a terminal that transmits a CSI-RS and/or a CSI report request indicator to a (target) receiving terminal.
- the transmitting terminal may be a terminal that transmits a (pre-defined) reference signal and/or a sidelink (L1) RSRP report request indicator to be used for sidelink (L1) RSRP measurement.
- the transmitting terminal may be a terminal that transmits a (pre-defined) reference signal to be used for sidelink (L1) RSRP measurement and/or a sidelink (L1) RSRP report request indicator to a (target) receiving terminal.
- a (pre-defined) reference signal to be used for sidelink (L1) RSRP measurement may be PSSCH DM-RS.
- the transmitting terminal may be a terminal that transmits a channel to be used for a sidelink radio link monitoring (RLM) and/or a sidelink radio link failure (RLF) operation (of a (target) receiving terminal).
- a channel to be used for sidelink RLM and/or sidelink RLF operation may be PSCCH or PSSCH.
- the transmitting terminal may be a terminal that transmits a reference signal (eg, DM-RS or CSI-RS) on a channel to be used for sidelink RLM and/or sidelink RLF operation.
- a reference signal eg, DM-RS or CSI-RS
- the receiving terminal may be a terminal that transmits the sidelink HARQ feedback (to the transmitting terminal) according to whether the decoding of data received from the transmitting terminal is successful.
- the receiving terminal may be a terminal that transmits sidelink HARQ feedback (to the transmitting terminal) according to whether the detection/decoding of the PSCCH (related to PSSCH scheduling) transmitted by the transmitting terminal is successful.
- the receiving terminal may be a terminal that transmits the sidelink CSI (to the transmitting terminal) based on the CSI-RS and/or the CSI report request indicator received from the transmitting terminal.
- the receiving terminal is a terminal that transmits a sidelink (L1) RSRP measurement value (to a transmitting terminal) based on a reference signal (defined in advance) and/or a sidelink (L1) RSRP report request indicator received from the transmitting terminal.
- the receiving terminal may be a terminal that transmits its own data or control information (to the transmitting terminal).
- the receiving terminal may be a terminal that performs an RLM and/or RLF operation based on a (pre-set) channel (eg, PSCCH or PSSCH) received from the transmitting terminal.
- the receiving terminal may be a terminal that performs an RLM and/or RLF operation based on a reference signal on a (pre-set) channel received from the transmitting terminal.
- PSCCH wording may be extended and interpreted as SCI.
- transmitting the PSCCH by the transmitting terminal to the receiving terminal may include the transmitting terminal transmitting the SCI to the receiving terminal through the PSCCH.
- PSCCH wording may be interpreted as an extension of 1 st SCI (or 2 nd SCI).
- transmitting the PSCCH by the transmitting terminal to the receiving terminal may include transmitting the 1 st SCI (or 2 nd SCI) to the receiving terminal by the transmitting terminal through the PSCCH.
- the SCI wording may be extended and interpreted as PSCCH (and/or 1 st SCI (or 2 nd SCI)).
- transmitting the SCI by the transmitting terminal to the receiving terminal may include transmitting the PSCCH (and/or 1 st SCI (or 2 nd SCI)) to the receiving terminal by the transmitting terminal.
- PSSCH wording may be interpreted as an extension of 2 nd SCI.
- the transmission terminal transmits the PSSCH to the receiving terminal may include sending the UE transmits the 2 nd SCI to the receiving terminal.
- 1 st SCI and 2 nd SCI refer to SCI of one group and SCI of the other group when dividing the SCI configuration fields into two groups in consideration of the (relatively) high SCI payload size. can do.
- 1 st SCI and 2 nd SCI may be transmitted through different channels.
- the transmitting terminal may transmit 1 st SCI through the PSCCH, and piggyback the 2 nd SCI on the PSSCH to transmit with data.
- the transmitting terminal may transmit 1 st SCI through PSCCH, and may transmit 2 nd SCI through (independent) PSCCH.
- the "configuration or definition” wording may be interpreted as being set (in advance) (through pre-defined signaling (eg, SIB, MAC signaling, RRC signaling)) from a base station or a network.
- pre-defined signaling eg, SIB, MAC signaling, RRC signaling
- “A can be set” may include “the base station or network (in advance) setting/defining or notifying A to the terminal”.
- the “set or definition” wording may be interpreted as being set or defined in advance by the system.
- “A can be set” may include "A is set/defined in advance by the system”.
- RLF may be determined based on at least one of OUT-OF-SYNCH and IN-SYNCH.
- a resource block (RB) may be extended and interpreted as a subcarrier.
- the receiving terminal may transmit (to the transmitting terminal) at least one of sidelink HARQ feedback, sidelink CSI, or sidelink (L1) RSRP.
- the (physical) channel used when the receiving terminal transmits at least one of sidelink HARQ feedback, sidelink CSI, or sidelink (L1) RSRP (to the transmitting terminal) is a PSFCH (Physical Sidelink Feedback Channel) or side It may be referred to as a link feedback channel.
- PSFCH Physical Sidelink Feedback Channel
- the receiving terminal may calculate the distance between itself and the transmitting terminal based on the location information of the transmitting terminal.
- the groupcast may be a connectionless groupcast.
- the transmitting terminal may transmit the location information of the transmitting terminal to the receiving terminal through a preset channel.
- the preset channel may be PSCCH.
- the preset channel may be PSSCH.
- the receiving terminal may transmit SL HARQ feedback.
- the SL HARQ feedback may be HARQ feedback for PSSCH and/or PSCCH transmitted by the transmitting terminal.
- the MIN_RANGE may be a request related to a service/packet.
- the MIN_RANGE may be a communication range requirement related to a service/packet transmitted by a transmitting terminal.
- FIG. 12 illustrates a method for a receiving terminal to perform an SL HARQ feedback operation based on a communication range requirement according to an embodiment of the present disclosure.
- the embodiment of FIG. 12 may be combined with various embodiments of the present disclosure.
- a transmitting terminal may transmit a PSCCH and/or PSSCH.
- the transmitting terminal may transmit a service/packet to the receiving terminal #1 and the receiving terminal #2 through the PSCCH and/or PSSCH.
- the transmitting terminal may transmit its location information to the receiving terminal #1 and the receiving terminal #2 through the PSCCH and/or PSSCH.
- position information of the transmission terminal may be included in the 2 nd transmitted through the PSSCH.
- the receiving terminal #1 is located within the communication range requirement related to the service/packet of the transmitting terminal, and the receiving terminal #2 is located outside the communication range requirement related to the service/packet of the transmitting terminal.
- the receiving terminal #1 may acquire a distance between the receiving terminal #1 and the transmitting terminal based on its location information and the location information of the transmitting terminal. And, if the distance is less than or equal to the communication range requirement related to the service/packet, in step S1220, the receiving terminal #1 may perform the SL HARQ feedback operation.
- the receiving terminal #2 may acquire a distance between the receiving terminal #2 and the transmitting terminal based on its own location information and the location information of the transmitting terminal. And, if the distance is greater than the communication range requirement related to the service/packet, in step S1230, the receiving terminal #2 may not perform the SL HARQ feedback operation. That is, the receiving terminal #2 may not transmit the SL HARQ feedback for the service/packet to the transmitting terminal.
- the receiving terminal needs to efficiently acquire the location of the transmitting terminal.
- a method for a transmitting terminal to efficiently transmit its own location information and an apparatus supporting the same will be described.
- a transmitting terminal may transmit its own location information.
- the transmitting terminal if it is determined that the ambiguity/inaccuracy of the location of itself (i.e., the transmitting terminal) becomes larger (than a preset threshold error value), the transmitting terminal has a relatively large amount of payload set in advance. You can transmit your own location information using (or the number of bits). For example, if a transmitting terminal transmitting location information determines that the receiving terminal will not be able to accurately determine the location of the transmitting terminal, the transmitting terminal uses a relatively large amount of payload (or number of bits) set in advance. Can transmit the location information.
- the SCI field used by the transmitting terminal to transmit its location information may be set to two types or two sizes (in advance).
- the transmitting terminal transmits the location information of the transmitting terminal to the receiving terminal through a field of a relatively small payload size (or number of bits) (hereinafter, SHORT_FIELD), the transmitting terminal It can be determined that the location can be accurately determined (above a predetermined threshold level). In this case, the transmitting terminal may select SHORT_FIELD for transmission of location information. And, the transmitting terminal may transmit its own location information through SHORT_FIELD.
- SHORT_FIELD a field of a relatively small payload size (or number of bits)
- the transmitting terminal when the transmitting terminal transmits the location information of the transmitting terminal to the receiving terminal through SHORT_FIELD, the transmitting terminal can accurately determine the location of the transmitting terminal (above a preset threshold level). You can decide not to.
- the transmitting terminal may select a field (hereinafter, LONG_FIELD) of a relatively large payload size (or number of bits) for transmission of location information.
- LONG_FIELD a field
- the transmitting terminal may select LONG_FIELD for transmission of location information in a zone to which the transmitting terminal belongs.
- the transmitting terminal may transmit its own location information through LONG_FIELD.
- the transmitting terminal transmits its location information to the receiving terminal through SHORT_FIELD
- the number of zones that can be considered as the zone to which the transmitting terminal belongs increases (than a preset threshold)
- transmission The terminal may determine that the receiving terminal cannot accurately determine the location of the transmitting terminal (above a preset threshold level) based on SHORT_FIELD.
- the transmitting terminal when the transmitting terminal transmits its location information to the receiving terminal through SHORT_FIELD, the location information of the transmitting terminal is quantized due to a relatively small payload size (or number of bits), and thereby If the inaccuracy of the location information of the transmitting terminal increases (more than a preset threshold allowable level), the transmitting terminal indicates that the receiving terminal cannot accurately determine the location of the transmitting terminal (above the preset threshold level) based on SHORT_FIELD. You can decide.
- the transmitting terminal is a (always) fixed (relatively small) payload size (or number of bits) through a (pre-set) field (hereinafter, F_DFIELD) on 1 st SCI ) Based on the location information (eg, Most Significant Bit, MSB) of the transmitting terminal. Then, the transmitting terminal 2 nd SCI (set in advance) on the field (hereinafter, S_DFIELD) a through, for (additional) information (for example, to increase the accuracy (related to the position information of the transmission terminal), Least Significant Bit, LSB ) Can be transmitted.
- F_DFIELD pre-set field
- the transmitting terminal only when the transmitting terminal determines that its location accuracy cannot be guaranteed (more than a preset threshold level) only by transmitting F_DFIELD on 1 st SCI, the transmitting terminal sets S_DFIELD to 2 nd SCI. Can be included in the phase.
- 2 nd SCI transmitting terminal 1 simply by only if their position accuracy determines that it can not be guaranteed (the threshold level or more set in advance), the transmission terminal for transmitting F_DFIELD on st SCI includes S_DFIELD Can be transmitted.
- the transmission terminal may indicate whether or not, or whether the S_DFIELD, S_DFIELD through the field on the 1 st SCI present on the 2 nd SCI transmitted on the 2 nd SCI.
- the field on the 1 st SCI may be a field set in advance.
- the field on the 1 st SCI may be a new field previously set.
- the transmission terminal may indicate whether or not, or whether the S_DFIELD, S_DFIELD via a 1-bit field on the 1 st SCI present on the 2 nd SCI transmitted on the 2 nd SCI.
- the transmitting terminal transmits some bits (e.g., MSB) (hereinafter, DIS_MSB) related to location information through PSSCH. Can be transmitted.
- the transmitting terminal may transmit DIS_MSB through the PSSCH at a preset period and/or a preset frequency.
- the transmitting terminal may transmit the remaining bits (eg, LSB) (hereinafter, DIS_LSB) through PSCCH (or SCI).
- the receiving terminal assumes/uses the (successfully) received DIS_MSB at the previous closest time point.
- the location of the transmitting terminal can be calculated/derived. For example, if the receiving terminal does not receive the DIS_MSB (during a preset time) and only receives the DIS_LSB, the receiving terminal calculates the location of the transmitting terminal by assuming/using the DIS_MSB related to the nearest zone or area from the viewpoint of the receiving terminal. / Can be extracted.
- the receiving terminal does not receive the DIS_MSB (during a preset time) and only receives the DIS_LSB, the receiving terminal is the transmitting terminal derived based on the (successfully) received DIS_MSB/DIS_LSB at the previous time point.
- the location of the transmitting terminal can be calculated/derived by assuming/using the DIS_MSB related to the zone or area to which it belongs. For example, if the receiving terminal does not receive the DIS_MSB (during a preset time) and only receives the DIS_LSB, the receiving terminal is the DIS_MSB related to the zone or area to which the location closest to the receiving terminal belongs among the previously derived locations of the transmitting terminal. It is possible to calculate/derive the location of the transmitting terminal by assuming/using.
- the following cases may exist.
- the receiving terminal may derive/assume the location of the transmitting terminal according to the method/rule proposed below.
- CASE #A For example, the transmitting terminal may express its location with an index/parameter related to a zone or area (based on a preset size).
- location information transmitted by the transmitting terminal may be quantized due to a limited payload size (or number of bits).
- an error may be included in its own location information estimated by the transmitting terminal.
- the GNSS (synchronization) quality is lower than a preset threshold level, an error may be included in its own location information estimated by the transmitting terminal.
- the receiving terminal may derive/assume the distance between the transmitting terminal and itself (ie, the receiving terminal) based on a point on a zone or area to which the transmitting terminal belongs.
- the point may be a nominal point.
- the point may be a preset point.
- the point may be defined as a center point on a zone or area.
- the point may be defined as a preset (reference) point on a zone or area.
- the point may be defined as a point furthest from a receiving terminal among a plurality of points on a zone or area.
- the point may be defined as a point closest to a receiving terminal among a plurality of points on a zone or area.
- the point may be defined as a point on a zone or area closest to the receiving terminal, among zones or areas.
- FIG. 13 illustrates a procedure for a receiving terminal to perform a HARQ operation based on a distance from a transmitting terminal according to an embodiment of the present disclosure.
- the embodiment of FIG. 13 may be combined with various embodiments of the present disclosure.
- a transmitting terminal may transmit a PSCCH.
- the transmitting terminal may transmit a PSSCH related to the PSCCH.
- the transmitting terminal may transmit 1 st SCI through the PSCCH, and the transmitting terminal may transmit 2 nd SCI through the PSSCH.
- the transmitting terminal may transmit a service/packet through the PSSCH.
- the 2 nd SCI may include information relating to the zone information and the communication range required (that is, MIN_RANGE).
- information related to the zone may be a zone ID.
- a second receiving terminal receiving nd SCI may obtain information related to a communication range of requirements, and the zone belongs transmission terminal in association with the service / packet.
- the receiving terminal may acquire a distance between itself and the transmitting terminal based on its location (ie, the location of the receiving terminal) and information related to the zone to which the transmitting terminal belongs. For example, the receiving terminal may obtain a distance between the location of the receiving terminal and a center point of a zone to which the transmitting terminal belongs. For example, the receiving terminal may acquire a distance between i) the location of the receiving terminal and ii) the closest center point from the location of the receiving terminal from among center points of a plurality of zones corresponding to information related to the zone.
- the receiving terminal can obtain the distance between itself and the transmitting terminal by using the location of the receiving terminal and the center point of the zone to which the transmitting terminal belongs. 14 to 16, a method of obtaining a distance between the receiving terminal and the transmitting terminal by the receiving terminal will be described in more detail.
- FIG. 14 illustrates a method for a receiving terminal to obtain a distance between the receiving terminal and a transmitting terminal according to an embodiment of the present disclosure.
- the embodiment of FIG. 14 may be combined with various embodiments of the present disclosure.
- 15 and 16 illustrate a method for a receiving terminal to obtain a distance between a receiving terminal and a transmitting terminal when a plurality of zones having the same zone ID exist around a receiving terminal, according to an embodiment of the present disclosure. 15 and 16 may be combined with various embodiments of the present disclosure.
- the receiving terminal may compare the distance obtained in step S1330 and the communication range requirement related to the service/packet. For example, the receiving terminal may determine whether to perform the HARQ feedback operation based on the distance and the communication range requirement.
- the receiving terminal may perform a HARQ feedback operation.
- the receiving terminal in step S1350, the receiving terminal failing to decode the PSSCH may transmit NACK information to the transmitting terminal through the PSFCH.
- the receiving terminal that has successfully decoded the PSSCH may not transmit ACK information to the transmitting terminal through the PSFCH.
- the PSFCH may be a feedback channel related to the PSCCH and/or the PSSCH.
- the receiving terminal may not perform the HARQ feedback operation. In this case, the receiving terminal may not transmit the HARQ feedback to the transmitting terminal regardless of whether or not to decode the PSSCH.
- the receiving terminal may derive/assume the distance between the transmitting terminal and itself (ie, the receiving terminal) based on a point on a zone or area to which the transmitting terminal belongs.
- the point may be a nominal point.
- the point may be a preset point.
- the point may be defined as a center point on a zone or area.
- the point may be defined as a preset (reference) point on a zone or area.
- the point may be defined as a point furthest from a receiving terminal among a plurality of points on a zone or area.
- the point may be defined as a point closest to a receiving terminal among a plurality of points on a zone or area.
- the receiving terminal (which has received the location information from the transmitting terminal) can (again) derive the possible location of the transmitting terminal based on a preset error value.
- the receiving terminal (which has received the location information from the transmitting terminal) can (again) derive the possible location of the transmitting terminal based on a preset error range.
- the receiving terminal (receiving the location information from the transmitting terminal) may (re) derive the possible location of the transmitting terminal based on a preset quantization level.
- the receiving terminal may (re) derive the possible location of the transmitting terminal based on a preset quantization error. Thereafter, the receiving terminal may transmit SL HARQ feedback when the distance difference with the receiving terminal is less than or equal to MIN_RANGE at any one of possible locations of the transmitting terminal.
- the receiving terminal (which has received the location information from the transmitting terminal) can (again) derive the possible location of the transmitting terminal based on a preset error value.
- the receiving terminal (receiving the location information from the transmitting terminal) may (again) derive the possible location of the transmitting terminal based on a preset error range.
- the receiving terminal (receiving the location information from the transmitting terminal) may (re) derive the possible location of the transmitting terminal based on a preset quantization level.
- the receiving terminal may (re) derive the possible location of the transmitting terminal based on a preset quantization error. Thereafter, the receiving terminal may transmit SL HARQ feedback when the distance difference with the receiving terminal is less than or equal to MIN_RANGE at any one of possible locations of the transmitting terminal.
- an upper layer (eg, an application layer and/or a V2X layer) of a terminal transmits MIN_RANGE information, which is a requirement related to a service/packet, to a lower layer (eg, an AS layer, a PHY layer). , MAC layer, RRC layer).
- a lower layer eg, an AS layer, a PHY layer. , MAC layer, RRC layer.
- the upper layer of the terminal may add a margin/offset value (set in advance) to the MIN_RANGE information and transfer it to the lower layer.
- the margin/offset value may be set differently for the terminal according to the accuracy of the location information (the terminal knows the own or the other terminal).
- the margin/offset value may be set differently for the terminal according to the type of service.
- the margin/offset value may be set differently for the terminal according to the priority of the service.
- the margin/offset value may be set differently for the terminal according to service requirements (eg, reliability and/or delay). For example, if the inaccuracy is greater than a preset threshold level, the terminal may add a relatively large margin/offset value to the MIN_RANGE information. For example, if the inaccuracy is not greater than the preset threshold level, the terminal may add a relatively small margin/offset value (eg, including 0) to the MIN_RANGE information.
- a transmitting terminal may efficiently transmit its location information to a receiving terminal. Furthermore, the transmitting terminal can more accurately inform the receiving terminal of its location.
- the receiving terminal may perform a TX-RX distance-based (groupcast) SL HARQ feedback operation.
- the TX-RX distance-based (groupcast) SL HARQ feedback operation after the receiving terminal decodes the PSCCH targeting the receiving terminal, if the receiving terminal fails to decode the PSSCH related to the PSCCH , The receiving terminal may transmit HARQ-NACK to the transmitting terminal through the PSFCH.
- the receiving terminal may not transmit HARQ-ACK to the transmitting terminal.
- the above-described feedback operation of the receiving terminal may be referred to as a NACK ONLY feedback operation.
- the receiving terminal acquires information related to the distance between the receiving terminal and the transmitting terminal based on the location of the receiving terminal and the location of the transmitting terminal. Or you can decide.
- the receiving terminal may perform a NACK ONLY feedback operation based on the distance-related information. For example, if the distance between the receiving terminal and the transmitting terminal is less than or less than the minimum required communication range related to a packet or service transmitted by the transmitting terminal, the receiving terminal may perform a NACK ONLY feedback operation on the transmitting terminal.
- the receiving terminal may not transmit HARQ feedback to the transmitting terminal.
- the transmitting terminal may transmit the packet or service to the receiving terminal through PSCCH and/or PSSCH.
- the receiving terminal may receive a packet or service having a higher priority than the preset threshold P_THD from the transmitting terminal.
- the receiving terminal may receive a packet or service with a priority higher than or equal to P_THD from the transmitting terminal.
- the receiving terminal may transmit HARQ feedback for the packet or service to the transmitting terminal based on a NACK ONLY feedback operation. For example, when the receiving terminal fails to decode the packet or service, the receiving terminal may transmit NACK information to the transmitting terminal. For example, when the receiving terminal succeeds in decoding the packet or service, the receiving terminal may not transmit ACK information to the transmitting terminal. For example, the receiving terminal may omit the HARQ feedback for the transmitting terminal.
- the receiving terminal may receive a packet or service with a lower priority than P_THD from the transmitting terminal.
- the receiving terminal may receive a packet or service with a priority lower than or equal to P_THD from the transmitting terminal.
- the receiving terminal may not transmit HARQ feedback for the packet or service to the transmitting terminal.
- the receiving terminal may omit the HARQ feedback for the transmitting terminal.
- the accuracy of its location information acquired by the receiving terminal may be lower than a preset threshold accuracy value.
- the receiving terminal may receive a packet or service having a higher priority than P_THD from the transmitting terminal.
- the receiving terminal may receive a packet or service with a priority higher than or equal to P_THD from the transmitting terminal.
- the receiving terminal may transmit HARQ feedback for the packet or service to the transmitting terminal based on a NACK ONLY feedback operation. For example, when the receiving terminal fails to decode the packet or service, the receiving terminal may transmit NACK information to the transmitting terminal. For example, when the receiving terminal succeeds in decoding the packet or service, the receiving terminal may not transmit ACK information to the transmitting terminal. For example, the receiving terminal may omit the HARQ feedback for the transmitting terminal.
- the accuracy of its location information acquired by the receiving terminal may be lower than a preset threshold accuracy value.
- the receiving terminal may receive a packet or service with a lower priority than P_THD from the transmitting terminal.
- the receiving terminal may receive a packet or service with a priority lower than or equal to P_THD from the transmitting terminal.
- the receiving terminal may not transmit HARQ feedback for the packet or service to the transmitting terminal.
- the receiving terminal may omit the HARQ feedback for the transmitting terminal.
- the P_THD value may be set differently for a terminal according to a congestion degree of a resource pool and/or a minimum communication range requirement.
- the transmitting terminal in the case of a TX-RX distance-based SL HARQ feedback operation (eg, NACK ONLY), according to the following rule, is a SL HARQ feedback operation without consideration for the TX-RX distance. Can be indicated to the receiving terminal.
- the transmitting terminal receives a TX-RX distance-based SL HARQ feedback operation deactivation (DISABLING). Can instruct the terminal.
- the minimum communication range field defined on the (2 nd ) SCI transmitted from the transmitting terminal to the receiving terminal and/or the zone ID field related to the transmitting terminal indicates a predetermined state and/or value
- receiving the UE TX-RX distance SL HARQ feedback operation e.g., NACK ONLY
- the transmission terminal transmits the situation that the terminal zone ID information is transmitted belonging to the 2 nd SCI for sending
- receiving The UE may determine that the TX-RX distance-based SL HARQ feedback operation is deactivated.
- the (2 nd ) minimum communication range field included on the SCI indicates a preset infinity (or 0) value
- the (2 nd ) (target) receiving terminal that has received the SCI May transmit NACK information to the transmitting terminal (eg, NACK ONLY feedback form) when PSSCH decoding fails without consideration of the TX-RX distance.
- the receiving terminal fails to decode the PSSCH, it may not transmit SL HARQ feedback (eg, NACK) to the transmitting terminal.
- the transmitting terminal determines that its location information is available, and/or, when the transmitting terminal grasps its location information with an accuracy equal to or greater than or exceeding a preset threshold, the transmitting terminal is (2 nd )
- the minimum communication range field and/or the zone ID field related to the transmitting terminal defined on the SCI may be designated or determined as a value other than a specific state or value (eg, infinity or 0) (described above).
- the transmitting terminal may transmit the (2 nd ) SCI to the receiving terminal. Accordingly, the transmitting terminal may allow the receiving terminal to use or apply only the TX-RX distance-based SL HARQ feedback operation (eg, NACK ONLY).
- the transmitting terminal determines that its location information is not available, and/or, when the transmitting terminal grasps its location information with an accuracy less than or less than a preset threshold, the transmitting terminal is (2 nd )
- the minimum communication range field and/or the zone ID field related to the transmitting terminal defined on the SCI may be designated or determined as a specific state or value (eg, infinite or 0) (described above).
- the transmitting terminal may transmit the (2 nd ) SCI to the receiving terminal. Accordingly, the transmitting terminal may allow the receiving terminal to use or apply only the SL HARQ feedback operation (eg, NACK ONLY) without consideration of the TX-RX distance.
- FIG. 17 illustrates a method for a transmitting terminal to transmit location information to a receiving terminal according to an embodiment of the present disclosure.
- the embodiment of FIG. 17 may be combined with various embodiments of the present disclosure.
- the transmitting terminal may transmit sidelink control information to the receiving terminal.
- the sidelink control information may include location information of a transmitting terminal.
- FIG. 18 illustrates a method for a receiving terminal to receive location information from a transmitting terminal according to an embodiment of the present disclosure.
- the embodiment of FIG. 18 may be combined with various embodiments of the present disclosure.
- the receiving terminal may receive sidelink control information including location information of the transmitting terminal from the transmitting terminal.
- the receiving terminal may determine the location of the transmitting terminal based on the location information of the transmitting terminal. The proposed method can be applied to the apparatus described below.
- FIG. 19 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 19 may be combined with various embodiments of the present disclosure.
- the first device may receive zone-related information from the second device through a physical sidelink shared channel (PSSCH).
- PSSCH physical sidelink shared channel
- the first device may acquire distance-related information based on the center position of the zone and the position of the first device.
- the first device may determine whether to transmit the HARQ feedback for the PSSCH to the second device based on the information related to the distance.
- the zone-related information may include an ID of a zone to which the second device belongs.
- the center location of the zone may be a center location closest to the location of the first device among center locations of a plurality of zones related to the ID of the zone.
- the IDs of the plurality of zones may be the same.
- the distance may be a distance between the center position of the zone and the position of the first device.
- the first device may receive information related to the communication range requirement through the PSSCH.
- information related to the communication range requirement may be received through SCI (Sidelink Control Information) on the PSSCH, and information related to the zone may be received through the SCI on the PSSCH.
- SCI Servicelink Control Information
- the first device transmits the HARQ feedback for the PSSCH to the second device. Can decide to send to. For example, only when the first device fails to receive the PSSCH, the HARQ feedback for the PSSCH may be transmitted to the second device, and the HARQ feedback may be HARQ NACK.
- the first device may determine not to transmit the HARQ feedback for the PSSCH.
- the first device may determine to transmit the HARQ feedback for the PSSCH to the second device.
- the information related to the zone is a field having a small payload size. It can be received through
- information related to the zone may be received through a field having a large payload size.
- the processor 102 of the first device 100 may control the transceiver 106 to receive zone-related information from the second device through a physical sidelink shared channel (PSSCH). Further, the processor 102 of the first device 100 may obtain information related to the distance based on the center position of the zone and the position of the first device. In addition, the processor 102 of the first device 100 may determine whether to transmit the HARQ feedback for the PSSCH to the second device based on the distance-related information.
- PSSCH physical sidelink shared channel
- a first device for performing wireless communication may include one or more memories for storing instructions; One or more transceivers; And one or more processors connecting the one or more memories and the one or more transceivers.
- the one or more processors execute the instructions to receive zone-related information from a second device through a physical sidelink shared channel (PSSCH); Acquiring distance-related information based on the center position of the zone and the position of the first device; And whether to transmit HARQ feedback for the PSSCH to the second device based on the distance-related information.
- PSSCH physical sidelink shared channel
- an apparatus configured to control a first terminal.
- an apparatus may include one or more processors; And one or more memories that are executably connected by the one or more processors and store instructions.
- the one or more processors execute the instructions to receive zone-related information from a second terminal through a physical sidelink shared channel (PSSCH); Acquiring distance-related information based on the center position of the zone and the position of the first terminal; And whether to transmit HARQ feedback for the PSSCH to the second terminal based on the distance-related information.
- PSSCH physical sidelink shared channel
- a non-transitory computer-readable storage medium storing instructions may be provided.
- the instructions when executed by one or more processors, cause the one or more processors to: 2nd information related to a zone through a physical sidelink shared channel (PSSCH) by a first device. Receive from the device; By the first device, based on the center position of the zone and the position of the first device, to obtain distance-related information; And, by the first device, it may be determined whether to transmit HARQ feedback for the PSSCH to the second device based on the information related to the distance.
- PSSCH physical sidelink shared channel
- FIG. 20 illustrates a method for a second device to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 20 may be combined with various embodiments of the present disclosure.
- the second device may transmit information related to a zone and information related to a communication range requirement to the first device through a physical sidelink shared channel (PSSCH).
- PSSCH physical sidelink shared channel
- the second device may receive HARQ feedback for the PSSCH from the first device.
- the distance between the first device and the second device may be obtained based on the center position of the zone and the position of the first device, and the distance may be less than or equal to the communication range requirement.
- the zone-related information may include an ID of a zone to which the second device belongs.
- the center location of the zone may be a center location closest to the location of the first device among center locations of a plurality of zones related to the ID of the zone.
- the processor 202 of the second device 200 transmits the information related to the zone and the communication range requirement to the first device through a physical sidelink shared channel (PSSCH). Can be controlled. Further, the processor 202 of the second device 200 may control the transceiver 206 to receive HARQ feedback for the PSSCH from the first device.
- PSSCH physical sidelink shared channel
- a second device for performing wireless communication may include one or more memories for storing instructions; One or more transceivers; And one or more processors connecting the one or more memories and the one or more transceivers.
- the one or more processors execute the instructions to transmit information related to a zone and information related to a communication range requirement to a first device through a Physical Sidelink Shared Channel (PSSCH); And HARQ feedback for the PSSCH may be received from the first device.
- PSSCH Physical Sidelink Shared Channel
- HARQ feedback for the PSSCH may be received from the first device.
- the distance between the first device and the second device may be obtained based on the center position of the zone and the position of the first device, and the distance may be less than or equal to the communication range requirement. have.
- 21 shows a communication system 1 according to an embodiment of the present disclosure.
- a communication system 1 to which various embodiments of the present disclosure are applied 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 100a, vehicles 100b-1 and 100b-2, eXtended Reality (XR) devices 100c, hand-held devices 100d, and home appliances 100e. ), Internet of Thing (IoT) devices 100f, and AI devices/servers 400 may be included.
- 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 200a may operate as a base station/network node to another wireless device.
- the wireless devices 100a to 100f may be connected to the network 300 through the base station 200.
- AI Artificial Intelligence
- the network 300 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network.
- the wireless devices 100a to 100f may communicate with each other through the base station 200 / network 300, but may perform direct communication (e.g. sidelink communication) without going through the base station / network.
- the vehicles 100b-1 and 100b-2 may perform direct communication (e.g.
- V2V Vehicle to Vehicle
- V2X Vehicle to Everything
- the IoT device eg, sensor
- the IoT device may directly communicate with other IoT devices (eg, sensors) or other wireless devices 100a to 100f.
- Wireless communication/connections 150a, 150b, and 150c may be established between the wireless devices 100a to 100f / base station 200 and the base station 200 / base station 200.
- the wireless communication/connection includes various wireless access such as uplink/downlink communication 150a, sidelink communication 150b (or D2D communication), base station communication 150c (eg relay, Integrated Access Backhaul). This can be achieved through technology (eg 5G NR)
- the wireless communication/connection 150a, 150b, 150c may transmit/receive signals through various physical channels.
- FIG. 22 illustrates a wireless device according to an embodiment of the present disclosure.
- the first wireless device 100 and the second wireless device 200 may transmit and receive wireless signals through various wireless access technologies (eg, LTE and NR).
- ⁇ the first wireless device 100, the second wireless device 200 ⁇ is the ⁇ wireless device 100x, the base station 200 ⁇ and/or ⁇ wireless device 100x, wireless device 100x) of FIG. 21 ⁇ Can be matched.
- the first wireless device 100 includes one or more processors 102 and one or more memories 104, and may further include one or more transceivers 106 and/or one or more antennas 108.
- the processor 102 controls the memory 104 and/or the transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed herein.
- the processor 102 may process information in the memory 104 to generate first information/signal, and then transmit a radio signal including the first information/signal through the transceiver 106.
- the processor 102 may store information obtained from signal processing of the second information/signal in the memory 104 after receiving the radio signal including the second information/signal through the transceiver 106.
- the memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102.
- the memory 104 may perform some or all of the processes controlled by the processor 102, or instructions for performing the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed herein. It can store software code including
- the processor 102 and the memory 104 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
- the transceiver 106 may be coupled with the processor 102 and may transmit and/or receive radio signals through one or more antennas 108.
- the transceiver 106 may include a transmitter and/or a receiver.
- the transceiver 106 may be mixed with an RF (Radio Frequency) unit.
- a wireless device may mean a communication modem/circuit/chip.
- the second wireless device 200 includes one or more processors 202 and one or more memories 204, and may further include one or more transceivers 206 and/or one or more antennas 208.
- the processor 202 controls the memory 204 and/or the transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed herein.
- the processor 202 may process information in the memory 204 to generate third information/signal, and then transmit a wireless signal including the third information/signal through the transceiver 206.
- the processor 202 may store information obtained from signal processing of the fourth information/signal in the memory 204 after receiving a radio signal including the fourth information/signal through the transceiver 206.
- the memory 204 may be connected to the processor 202 and may store various information related to the operation of the processor 202. For example, the memory 204 may perform some or all of the processes controlled by the processor 202, or instructions for performing the descriptions, functions, procedures, suggestions, methods and/or operational flow charts disclosed in this document. It can store software code including
- the processor 202 and the memory 204 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
- the transceiver 206 may be connected to the processor 202 and may transmit and/or receive radio signals through one or more antennas 208.
- the transceiver 206 may include a transmitter and/or a receiver.
- the transceiver 206 may be used interchangeably with an RF unit.
- a wireless device may mean a communication modem/circuit/chip.
- one or more protocol layers may be implemented by one or more processors 102, 202.
- one or more processors 102, 202 may implement one or more layers (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
- One or more processors 102, 202 may be configured to generate one or more Protocol Data Units (PDUs) and/or one or more Service Data Units (SDUs) according to the description, functions, procedures, proposals, 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 102, 202 may generate messages, control information, data, or information according to the description, function, procedure, suggestion, method, and/or operational flow chart disclosed herein.
- At least one processor (102, 202) generates a signal (e.g., a baseband signal) including PDU, SDU, message, control information, data or information according to the functions, procedures, proposals and/or methods disclosed herein. , It may be provided to one or more transceivers (106, 206).
- One or more processors 102, 202 may receive signals (e.g., baseband signals) from one or more transceivers 106, 206, and the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed herein PDUs, SDUs, messages, control information, data, or information may be obtained according to the parameters.
- signals e.g., baseband signals
- One or more of the processors 102 and 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer.
- One or more of the processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof.
- ASICs Application Specific Integrated Circuits
- DSPs Digital Signal Processors
- DSPDs Digital Signal Processing Devices
- PLDs Programmable Logic Devices
- FPGAs Field Programmable Gate Arrays
- 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 102, 202, or stored in one or more memories 104, 204, and are It may be driven by the above processors 102 and 202.
- the descriptions, functions, procedures, proposals, methods and/or operational flow charts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and/or sets of instructions.
- One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and may store various types of data, signals, messages, information, programs, codes, instructions and/or instructions.
- One or more memories 104 and 204 may be composed of ROM, RAM, EPROM, flash memory, hard drive, register, cache memory, computer readable storage medium, and/or combinations thereof.
- One or more memories 104 and 204 may be located inside and/or outside of one or more processors 102 and 202.
- one or more memories 104, 204 may be connected to one or more processors 102, 202 through various technologies such as wired or wireless connection.
- the one or more transceivers 106 and 206 may transmit user data, control information, radio signals/channels, and the like mentioned in the methods and/or operation flow charts of this document to one or more other devices.
- One or more transceivers (106, 206) may receive user data, control information, radio signals/channels, etc. mentioned in the description, functions, procedures, suggestions, methods and/or operation flow charts disclosed in this document from one or more other devices.
- one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202, and may 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, or radio signals to one or more other devices.
- one or more processors 102, 202 may control one or more transceivers 106, 206 to receive user data, control information, or radio signals from one or more other devices.
- one or more transceivers (106, 206) may be connected with one or more antennas (108, 208), and one or more transceivers (106, 206) through one or more antennas (108, 208), the description and functionality disclosed in this document. It may be set to transmit and receive user data, control information, radio signals/channels, etc. mentioned in procedures, proposals, methods and/or operation flowcharts.
- one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
- One or more transceivers (106, 206) in order to process the received user data, control information, radio signal / channel, etc. using one or more processors (102, 202), the received radio signal / channel, etc. in the RF band signal. It can be converted into a baseband signal.
- One or more transceivers 106 and 206 may convert user data, control information, radio signals/channels, etc. processed using one or more processors 102 and 202 from a baseband signal to an RF band signal.
- one or more of the transceivers 106 and 206 may include (analog) oscillators and/or filters.
- FIG. 23 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure.
- the signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050, and a signal generator 1060. have.
- the operations/functions of FIG. 23 may be performed in the processors 102 and 202 and/or the transceivers 106 and 206 of FIG. 22.
- the hardware elements of FIG. 23 may be implemented in the processors 102 and 202 and/or the transceivers 106 and 206 of FIG. 22.
- blocks 1010 to 1060 may be implemented in the processors 102 and 202 of FIG. 22.
- blocks 1010 to 1050 may be implemented in the processors 102 and 202 of FIG. 22, and block 1060 may be implemented in the transceivers 106 and 206 of FIG. 22.
- the codeword may be converted into a wireless signal through the signal processing circuit 1000 of FIG. 23.
- the codeword is an encoded bit sequence of an information block.
- the information block may include a transport block (eg, a UL-SCH transport block, a DL-SCH transport block).
- the radio signal may be transmitted through various physical channels (eg, PUSCH, PDSCH).
- the codeword may be converted into a scrambled bit sequence by the scrambler 1010.
- the scramble sequence used for scramble is generated based on an initialization value, and the initialization value may include ID information of a wireless device.
- the scrambled bit sequence may be modulated by the modulator 1020 into a modulation symbol sequence.
- the modulation scheme may include pi/2-Binary Phase Shift Keying (pi/2-BPSK), m-Phase Shift Keying (m-PSK), m-Quadrature Amplitude Modulation (m-QAM), and the like.
- the complex modulation symbol sequence may be mapped to one or more transport layers by the layer mapper 1030.
- the modulation symbols of each transport layer may be mapped to the corresponding antenna port(s) by the precoder 1040 (precoding).
- the output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 by the N*M precoding matrix W.
- N is the number of antenna ports
- M is the number of transmission layers.
- the precoder 1040 may perform precoding after performing transform precoding (eg, DFT transform) on complex modulation symbols. Also, the precoder 1040 may perform precoding without performing transform precoding.
- the resource mapper 1050 may map modulation symbols of each antenna port to a time-frequency resource.
- the time-frequency resource may include a plurality of symbols (eg, CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain, and may include a plurality of subcarriers in the frequency domain.
- CP Cyclic Prefix
- DAC Digital-to-Analog Converter
- the signal processing process for the received signal in the wireless device may be configured in reverse of the signal processing process 1010 to 1060 of FIG. 23.
- a wireless device eg, 100, 200 in FIG. 22
- the received radio signal may be converted into a baseband signal through a signal restorer.
- the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP canceller, and a Fast Fourier Transform (FFT) module.
- ADC analog-to-digital converter
- FFT Fast Fourier Transform
- the baseband signal may be reconstructed into a codeword through a resource de-mapper process, a postcoding process, a demodulation process, and a de-scramble process.
- a signal processing circuit for a received signal may include a signal restorer, a resource demapper, a postcoder, a demodulator, a descrambler, and a decoder.
- the wireless device may be implemented in various forms according to use-examples/services (see FIG. 21).
- the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 of FIG. 22, and various elements, components, units/units, and/or modules ) Can be composed of.
- the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional element 140.
- the communication unit may include a communication circuit 112 and a transceiver(s) 114.
- the communication circuit 112 may include one or more processors 102 and 202 and/or one or more memories 104 and 204 of FIG. 22.
- the transceiver(s) 114 may include one or more transceivers 106,206 and/or one or more antennas 108,208 of FIG. 22.
- the control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140 and controls all operations of the wireless device.
- the controller 120 may control the electrical/mechanical operation of the wireless device based on the program/code/command/information stored in the memory unit 130.
- the control unit 120 transmits the information stored in the memory unit 130 to an external (eg, other communication device) through the communication unit 110 through a wireless/wired interface, or through the communication unit 110 to the outside (eg, Information received through a wireless/wired interface from another communication device) may be stored in the memory unit 130.
- the additional element 140 may be variously configured according to the type of wireless device.
- the additional element 140 may include at least one of a power unit/battery, an I/O unit, a driving unit, and a computing unit.
- wireless devices include robots (FIGS. 21, 100a), vehicles (FIGS. 21, 100b-1, 100b-2), XR devices (FIGS. 21, 100c), portable devices (FIGS. 21, 100d), and home appliances.
- Fig. 21, 100e) IoT device (Fig. 21, 100f), digital broadcasting terminal, hologram device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate/environment device, It may be implemented in the form of an AI server/device (FIGS. 21 and 400), a base station (FIGS. 21 and 200), 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 100 and 200 may be connected to each other through a wired interface, or at least part of them may be wirelessly connected through the communication unit 110.
- the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and the first unit (eg, 130, 140) are connected through the communication unit 110.
- the control unit 120 and the first unit eg, 130, 140
- each element, component, unit/unit, and/or module in the wireless device 100 and 200 may further include one or more elements.
- the controller 120 may be configured with one or more processor sets.
- control unit 120 may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing processor, and a memory control processor.
- memory unit 130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory. volatile memory) and/or a combination thereof.
- Portable devices may include smart phones, smart pads, wearable devices (eg, smart watches, smart glasses), and portable computers (eg, notebook computers).
- the portable device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).
- MS mobile station
- UT user terminal
- MSS mobile subscriber station
- SS subscriber station
- AMS advanced mobile station
- WT wireless terminal
- the portable device 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an input/output unit 140c. ) Can be included.
- the antenna unit 108 may be configured as a part of the communication unit 110.
- Blocks 110 to 130/140a to 140c correspond to blocks 110 to 130/140 of FIG. 24, respectively.
- the communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with other wireless devices and base stations.
- the controller 120 may perform various operations by controlling components of the portable device 100.
- the controller 120 may include an application processor (AP).
- the memory unit 130 may store data/parameters/programs/codes/commands required for driving the portable device 100. Also, the memory unit 130 may store input/output data/information, and the like.
- the power supply unit 140a supplies power to the portable device 100 and may include a wired/wireless charging circuit, a battery, and the like.
- the interface unit 140b may support connection between the portable device 100 and other external devices.
- the interface unit 140b may include various ports (eg, audio input/output ports, video input/output ports) for connection with external devices.
- the input/output unit 140c may receive or output image information/signal, audio information/signal, data, and/or information input from a user.
- the input/output unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and/or a haptic module.
- the input/output unit 140c acquires information/signals (eg, touch, text, voice, image, video) input from the user, and the obtained information/signals are stored in the memory unit 130. Can be saved.
- the communication unit 110 may convert information/signals stored in the memory into wireless signals, and may directly transmit the converted wireless signals to other wireless devices or to a base station.
- the communication unit 110 may restore the received radio signal to the original information/signal. After the restored information/signal is stored in the memory unit 130, it may be output in various forms (eg, text, voice, image, video, heptic) through the input/output unit 140c.
- the vehicle or autonomous vehicle may be implemented as a mobile robot, a vehicle, a train, an aerial vehicle (AV), or a ship.
- AV aerial vehicle
- the vehicle or autonomous driving vehicle 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a driving unit 140a, a power supply unit 140b, a sensor unit 140c, and autonomous driving. It may include a unit (140d).
- the antenna unit 108 may be configured as a part of the communication unit 110.
- Blocks 110/130/140a to 140d correspond to blocks 110/130/140 of FIG. 24, respectively.
- the communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with external devices such as other vehicles, base stations (e.g. base stations, roadside base stations, etc.), and servers.
- the controller 120 may perform various operations by controlling elements of the vehicle or the autonomous vehicle 100.
- the control unit 120 may include an Electronic Control Unit (ECU).
- the driving unit 140a may cause the vehicle or the autonomous vehicle 100 to travel on the ground.
- the driving unit 140a may include an engine, a motor, a power train, a wheel, a brake, a steering device, and the like.
- the power supply unit 140b supplies power to the vehicle or the autonomous vehicle 100, and may include a wired/wireless charging circuit, a battery, and the like.
- the sensor unit 140c may obtain vehicle status, surrounding environment information, user information, and the like.
- the sensor unit 140c is an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an inclination sensor, a weight detection sensor, a heading sensor, a position module, and a vehicle advancement. /Reverse sensor, battery sensor, fuel sensor, tire sensor, steering sensor, temperature sensor, humidity sensor, ultrasonic sensor, illumination sensor, pedal position sensor, etc. may be included.
- the autonomous driving unit 140d is a technology for maintaining a driving lane, a technology for automatically adjusting the speed such as adaptive cruise control, a technology for automatically driving along a predetermined route, and for driving by automatically setting a route when a destination is set. Technology, etc. can be implemented.
- the communication unit 110 may receive map data and traffic information data from an external server.
- the autonomous driving unit 140d may generate an autonomous driving route and a driving plan based on the acquired data.
- the controller 120 may control the driving unit 140a so that the vehicle or the autonomous driving vehicle 100 moves along the autonomous driving path according to the driving plan (eg, speed/direction adjustment).
- the communication unit 110 asynchronously/periodically acquires the latest traffic information data from an external server, and may acquire surrounding traffic information data from surrounding vehicles.
- the sensor unit 140c may acquire vehicle state and surrounding environment information.
- the autonomous driving unit 140d may update the autonomous driving route and the driving plan based on the newly acquired data/information.
- the communication unit 110 may transmit information about a vehicle location, an autonomous driving route, and a driving plan to an external server.
- the external server may predict traffic information data in advance using AI technology or the like based on information collected from the vehicle or autonomously driving vehicles, and may provide the predicted traffic information data to the vehicle or autonomously driving vehicles.
- the claims set forth herein may be combined in a variety of ways.
- the technical features of the method claims of the present specification may be combined to be implemented as a device, and the technical features of the device claims of the present specification may be combined to be implemented by a method.
- the technical characteristics of the method claim of the present specification and the technical characteristics of the device claim may be combined to be implemented as a device, and the technical characteristics of the method claim of the present specification and the technical characteristics of the device claim may be combined to be implemented by a method.
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Abstract
Description
SCS (15*2u) | Nslot symb | Nframe,u slot | Nsubframe,u slot |
15KHz (u=0) | 14 | 10 | 1 |
30KHz (u=1) | 14 | 20 | 2 |
60KHz (u=2) | 14 | 40 | 4 |
120KHz (u=3) | 14 | 80 | 8 |
240KHz (u=4) | 14 | 160 | 16 |
SCS (15*2u) | Nslot symb | Nframe,u slot | Nsubframe,u slot |
60KHz (u=2) | 12 | 40 | 4 |
Frequency Range designation | Corresponding frequency range | Subcarrier Spacing (SCS) |
FR1 | 450MHz - 6000MHz | 15, 30, 60kHz |
FR2 | 24250MHz - 52600MHz | 60, 120, 240kHz |
Frequency Range designation | Corresponding frequency range | Subcarrier Spacing (SCS) |
FR1 | 410MHz - 7125MHz | 15, 30, 60kHz |
FR2 | 24250MHz - 52600MHz | 60, 120, 240kHz |
Claims (20)
- 제 1 장치가 무선 통신을 수행하는 방법에 있어서,PSSCH(Physical Sidelink Shared Channel)를 통해서 존(zone)과 관련된 정보를 제 2 장치로부터 수신하는 단계;상기 존의 중심 위치 및 상기 제 1 장치의 위치를 기반으로, 거리와 관련된 정보를 획득하는 단계; 및상기 거리와 관련된 정보를 기반으로, 상기 PSSCH에 대한 HARQ 피드백을 상기 제 2 장치에게 전송할지 여부를 결정하는 단계;를 포함하는, 방법.
- 제 1 항에 있어서,상기 존과 관련된 정보는 상기 제 2 장치가 속하는 존의 ID를 포함하는, 방법.
- 제 2 항에 있어서,상기 존의 중심 위치는, 상기 존의 ID와 관련된 복수의 존의 중심 위치 중에서, 상기 제 1 장치의 위치로부터 가장 가까운 중심 위치인, 방법.
- 제 3 항에 있어서,상기 복수의 존의 ID는 동일한, 방법.
- 제 1 항에 있어서,상기 거리는 상기 존의 중심 위치 및 상기 제 1 장치의 위치 사이의 거리인, 방법.
- 제 1 항에 있어서,상기 PSSCH를 통해서 통신 범위 요구 사항과 관련된 정보를 수신하는 단계;를 더 포함하되,상기 통신 범위 요구 사항과 관련된 정보는 상기 PSSCH 상의 SCI(Sidelink Control Information)를 통해서 수신되고, 및상기 존과 관련된 정보는 상기 PSSCH 상의 상기 SCI를 통해서 수신되는, 방법.
- 제 1 항에 있어서,상기 거리가 상기 PSSCH를 통해서 수신되는 데이터와 관련된 통신 범위 요구 사항(communication range requirement)보다 작거나 같은 것을 기반으로, 상기 제 1 장치는 상기 PSSCH에 대한 상기 HARQ 피드백을 상기 제 2 장치에게 전송하도록 결정하는, 방법.
- 제 7 항에 있어서,상기 제 1 장치가 상기 PSSCH에 대한 수신에 실패한 경우에만, 상기 PSSCH에 대한 상기 HARQ 피드백은 상기 제 2 장치에게 전송되고, 및상기 HARQ 피드백은 HARQ NACK인, 방법.
- 제 1 항에 있어서,상기 거리가 상기 PSSCH를 통해서 수신되는 데이터와 관련된 통신 범위 요구 사항보다 큰 것을 기반으로, 상기 제 1 장치는 상기 PSSCH에 대한 상기 HARQ 피드백을 전송하지 않도록 결정하는, 방법.
- 제 1 항에 있어서,상기 제 1 장치의 위치 정보의 정확도가 제 1 임계값보다 낮다고 결정하는 단계;를 더 포함하는 방법.
- 제 10 항에 있어서,상기 PSSCH를 통해서 수신되는 데이터의 우선 순위가 제 2 임계값보다 높은 것을 기반으로, 상기 제 1 장치는 상기 PSSCH에 대한 상기 HARQ 피드백을 상기 제 2 장치에게 전송하도록 결정하는, 방법.
- 제 1 항에 있어서,상기 제 2 장치가 상기 제 1 장치가 상기 제 2 장치의 위치를 사전에 설정된 임계 수준 이상의 정확도로 식별 가능하다고 결정하는 것을 기반으로, 상기 존과 관련된 정보는 작은 페이로드 크기의 필드를 통해서 수신되는, 방법.
- 제 1 항에 있어서,상기 제 2 장치가 속하는 존으로 결정될 수 있는 존의 개수가 사전에 설정된 임계값을 초과하는 것을 기반으로, 상기 존과 관련된 정보는 큰 페이로드 크기의 필드를 통해서 수신되는, 방법
- 무선 통신을 수행하는 제 1 장치에 있어서,명령어들을 저장하는 하나 이상의 메모리;하나 이상의 송수신기; 및상기 하나 이상의 메모리와 상기 하나 이상의 송수신기를 연결하는 하나 이상의 프로세서를 포함하되, 상기 하나 이상의 프로세서는 상기 명령어들을 실행하여,PSSCH(Physical Sidelink Shared Channel)를 통해서 존(zone)과 관련된 정보를 제 2 장치로부터 수신하고;상기 존의 중심 위치 및 상기 제 1 장치의 위치를 기반으로, 거리와 관련된 정보를 획득하고; 및상기 거리와 관련된 정보를 기반으로, 상기 PSSCH에 대한 HARQ 피드백을 상기 제 2 장치에게 전송할지 여부를 결정하는, 제 1 장치.
- 제 1 단말을 제어하도록 설정된 장치(apparatus)에 있어서,하나 이상의 프로세서; 및상기 하나 이상의 프로세서에 의해 실행 가능하게 연결되고, 및 명령어들을 저장하는 하나 이상의 메모리를 포함하되, 상기 하나 이상의 프로세서는 상기 명령어들을 실행하여,PSSCH(Physical Sidelink Shared Channel)를 통해서 존(zone)과 관련된 정보를 제 2 단말로부터 수신하고;상기 존의 중심 위치 및 상기 제 1 단말의 위치를 기반으로, 거리와 관련된 정보를 획득하고; 및상기 거리와 관련된 정보를 기반으로, 상기 PSSCH에 대한 HARQ 피드백을 상기 제 2 단말에게 전송할지 여부를 결정하는, 장치.
- 명령어들을 기록하고 있는 비일시적 컴퓨터 판독가능 저장 매체로서,상기 명령어들은, 하나 이상의 프로세서들에 의해 실행될 때, 상기 하나 이상의 프로세서들로 하여금:제 1 장치에 의해, PSSCH(Physical Sidelink Shared Channel)를 통해서 존(zone)과 관련된 정보를 제 2 장치로부터 수신하게 하고;상기 제 1 장치에 의해, 상기 존의 중심 위치 및 상기 제 1 장치의 위치를 기반으로, 거리와 관련된 정보를 획득하게 하고; 및상기 제 1 장치에 의해, 상기 거리와 관련된 정보를 기반으로, 상기 PSSCH에 대한 HARQ 피드백을 상기 제 2 장치에게 전송할지 여부를 결정하게 하는, 비일시적 컴퓨터 판독가능 저장 매체.
- 제 2 장치가 무선 통신을 수행하는 방법에 있어서,PSSCH(Physical Sidelink Shared Channel)를 통해서 존(zone)과 관련된 정보 및 통신 범위 요구 사항과 관련된 정보를 제 1 장치에게 전송하는 단계; 및상기 PSSCH에 대한 HARQ 피드백을 상기 제 1 장치로부터 수신하는 단계;를 포함하되,상기 제 1 장치 및 상기 제 2 장치 사이의 거리는 상기 존의 중심 위치 및 상기 제 1 장치의 위치를 기반으로 획득되고, 및상기 거리는 상기 통신 범위 요구 사항보다 작거나 같은, 방법.
- 제 17 항에 있어서,상기 존과 관련된 정보는 상기 제 2 장치가 속하는 존의 ID를 포함하는, 방법.
- 제 18 항에 있어서,상기 존의 중심 위치는, 상기 존의 ID와 관련된 복수의 존의 중심 위치 중에서, 상기 제 1 장치의 위치로부터 가장 가까운 중심 위치인, 방법.
- 무선 통신을 수행하는 제 2 장치에 있어서,명령어들을 저장하는 하나 이상의 메모리;하나 이상의 송수신기; 및상기 하나 이상의 메모리와 상기 하나 이상의 송수신기를 연결하는 하나 이상의 프로세서를 포함하되, 상기 하나 이상의 프로세서는 상기 명령어들을 실행하여,PSSCH(Physical Sidelink Shared Channel)를 통해서 존(zone)과 관련된 정보 및 통신 범위 요구 사항과 관련된 정보를 제 1 장치에게 전송하고; 및상기 PSSCH에 대한 HARQ 피드백을 상기 제 1 장치로부터 수신하되,상기 제 1 장치 및 상기 제 2 장치 사이의 거리는 상기 존의 중심 위치 및 상기 제 1 장치의 위치를 기반으로 획득되고, 및상기 거리는 상기 통신 범위 요구 사항보다 작거나 같은, 제 2 장치.
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US17/608,623 US20220217698A1 (en) | 2019-05-03 | 2020-05-04 | Method and apparatus for transmitting location information in nr v2x |
CN202080041123.3A CN113906794B (zh) | 2019-05-03 | 2020-05-04 | 用于在nr v2x中发送位置信息的方法和设备 |
EP20802766.4A EP3955660A4 (en) | 2019-05-03 | 2020-05-04 | METHOD AND DEVICE FOR TRANSMITTING LOCATION INFORMATION IN NR V2X |
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WO2022011584A1 (en) * | 2020-07-15 | 2022-01-20 | Qualcomm Incorporated | Enforcing range reliability for information shared via wireless transmissions |
US11968697B2 (en) * | 2020-08-14 | 2024-04-23 | Qualcomm Incorporated | Spatial reuse for sidelink communications |
US20220167345A1 (en) * | 2020-11-23 | 2022-05-26 | Samsung Electronics Co., Ltd. | Method and apparatus for enhanced resource allocation in sl communication |
US20220225283A1 (en) * | 2021-01-14 | 2022-07-14 | Apple Inc. | Systems and methods for enhancement on sidelink power control |
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