WO2021034079A1 - Nr v2x에서 bwp를 기반으로 사이드링크 관련 정보를 기지국에게 전송하는 방법 및 장치 - Google Patents
Nr v2x에서 bwp를 기반으로 사이드링크 관련 정보를 기지국에게 전송하는 방법 및 장치 Download PDFInfo
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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 in RAT before NR, a method of providing safety service based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperative Awareness Message), and DENM (Decentralized Environmental Notification Message). This was mainly discussed.
- 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.
- a method for a first device to perform wireless communication.
- the method includes receiving information related to a sidelink (SL) bandwidth part (BWP) from a first base station; Receiving information related to UL (uplink) BWP from the first base station; Receiving information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback from the first base station; Determining not to perform SL transmission based on the first SL resource on the SL BWP; And transmitting the HARQ NACK to the first base station based on the first UL resource on the UL BWP, based on the first device determining not to perform the SL transmission based on the first SL resource.
- SL sidelink
- BWP bandwidth part
- HARQ hybrid automatic repeat request
- 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 information related to a sidelink (SL) bandwidth part (BWP) from a first base station; Receive information related to UL (uplink) BWP from the first base station; Receiving information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback from the first base station; Determining not to perform SL transmission based on the first SL resource on the SL BWP; And HARQ NACK can be transmitted to the first base station based on the first UL resource on the UL BWP based on the first device determining not to perform the SL transmission based on the first SL resource.
- SL sidelink
- UL uplink
- 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 communication system 1 according to an embodiment of the present disclosure.
- FIG 3 illustrates a wireless device according to an embodiment of the present disclosure.
- FIG. 4 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure.
- FIG 5 illustrates a wireless device according to an embodiment of the present disclosure.
- FIG. 6 illustrates a portable device according to an embodiment of the present disclosure.
- FIG. 7 illustrates a vehicle or an autonomous vehicle according to an embodiment of the present disclosure.
- FIG 8 shows a structure of an NR system according to an embodiment of the present disclosure.
- FIG. 9 illustrates functional division between NG-RAN and 5GC according to an embodiment of the present disclosure.
- FIG. 10 illustrates a radio protocol architecture according to an embodiment of the present disclosure.
- FIG. 11 illustrates a structure of a radio frame of NR according to an embodiment of the present disclosure.
- FIG. 12 illustrates a slot structure of an NR frame according to an embodiment of the present disclosure.
- FIG 13 shows an example of a BWP according to an embodiment of the present disclosure.
- FIG. 14 illustrates a radio protocol architecture for SL communication according to an embodiment of the present disclosure.
- FIG. 15 shows a terminal performing V2X or SL communication according to an embodiment of the present disclosure.
- 16 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 17 illustrates three cast types according to an embodiment of the present disclosure.
- 18 is a diagram for explaining a problem in which transmission resources collide between terminals performing different modes of operation.
- 19 illustrates a method of performing sidelink transmission by using a transmission resource related to a sidelink by a mode 1 transmission terminal according to an embodiment of the present disclosure.
- FIG. 20 illustrates a method of additionally scheduling and/or allocating a third transmission resource and a fourth transmission resource to a transmission terminal by a base station according to an embodiment of the present disclosure.
- 21 illustrates a method for a first device to transmit sidelink information according to an embodiment of the present disclosure.
- FIG. 22 illustrates a method of receiving sidelink information by a second device according to an embodiment of the present disclosure.
- 23 illustrates a procedure for a terminal to report information related to sidelink transmission to a base station according to an embodiment of the present disclosure.
- FIG. 24 illustrates a procedure for a terminal to report NACK information to a base station according to an embodiment of the present disclosure.
- 25 illustrates a procedure for a terminal to report NACK information to a base station according to an embodiment of the present disclosure.
- 26 illustrates an example of a resource related to a set grant according to an embodiment of the present disclosure.
- FIG. 27 illustrates a method for a first device to determine whether to perform sidelink transmission on a first resource according to an embodiment of the present disclosure.
- FIG. 28 illustrates a method for a base station to receive information related to sidelink information from a first device in a second resource according to an embodiment of the present disclosure.
- 29 illustrates a method for a first device to determine whether to perform sidelink transmission in a first resource on one or more BWPs, according to an embodiment of the present disclosure.
- FIG. 30 illustrates a method for a base station to receive information related to sidelink information from a first device in a second resource on one or more BWPs according to an embodiment of the present disclosure.
- 31 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure.
- 32 illustrates a method for a base station to perform wireless communication according to an embodiment of the present disclosure.
- 33 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure.
- 34 illustrates a method for a base station to perform wireless communication 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 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. ), an Internet of Thing (IoT) device 100f, and an AI device/server 400.
- the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, 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.
- wireless communication technologies implemented in the wireless devices 100a to 100f of the present specification may include LTE, NR, and 6G, as well as Narrowband Internet of Things for low power communication.
- the NB-IoT technology may be an example of a Low Power Wide Area Network (LPWAN) technology, and may be implemented in standards such as LTE Cat NB1 and/or LTE Cat NB2, and limited to the above name no.
- the wireless communication technology implemented in the wireless devices 100a to 100f of the present specification may perform communication based on the LTE-M technology.
- the LTE-M technology may be an example of an LPWAN technology, and may be referred to as various names such as eMTC (enhanced machine type communication).
- LTE-M technology is 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-Bandwidth Limited (BL), 5) LTE-MTC, 6) LTE Machine Type Communication, and/or 7) may be implemented in at least one of various standards such as LTE M, and is not limited to the above name.
- the wireless communication technology implemented in the wireless devices 100a to 100f of the present specification includes at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low power communication. Any one may be included, and the name is not limited to the above.
- ZigBee technology can generate personal area networks (PANs) related to small/low-power digital communication based on various standards such as IEEE 802.15.4, and may be called various names.
- PANs personal area networks
- 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 3 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. ⁇ 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 flow charts disclosed in this document. 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 flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and/or a set of instructions.
- One or more memories 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.
- 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 operational 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, and the like mentioned in a procedure, a proposal, a method, and/or an operation flowchart.
- 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. 4 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.
- the operations/functions of FIG. 4 may be performed in the processors 102 and 202 and/or the transceivers 106 and 206 of FIG. 3.
- the hardware elements of FIG. 4 may be implemented in the processors 102 and 202 and/or the transceivers 106 and 206 of FIG. 3.
- blocks 1010 to 1060 may be implemented in the processors 102 and 202 of FIG. 3.
- blocks 1010 to 1050 may be implemented in the processors 102 and 202 of FIG. 3
- block 1060 may be implemented in the transceivers 106 and 206 of FIG. 3.
- the codeword may be converted into a wireless signal through the signal processing circuit 1000 of FIG. 4.
- 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 precoding matrix W of N*M.
- 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 as the reverse of the signal processing process 1010 to 1060 of FIG. 4.
- a wireless device eg, 100 and 200 in FIG. 3 may receive a wireless signal from the outside through an antenna port/transmitter.
- 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-example/service (see FIG. 2).
- the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 of FIG. 3, and various elements, components, units/units, and/or modules ).
- 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. 3.
- the transceiver(s) 114 may include one or more transceivers 106,206 and/or one or more antennas 108,208 of FIG. 3.
- 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. 2, 100a), vehicles (Figs. 2, 100b-1, 100b-2), XR devices (Figs. 2, 100c), portable devices (Figs. 2, 100d), and home appliances.
- Fig. 2, 100e) IoT device (Fig. 2, 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. 2 and 400), a base station (Fig. 2, 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 entirely interconnected through a wired interface, or at least some may be wirelessly connected through the communication unit 110.
- the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and the first unit (eg, 130, 140) are connected through the communication unit 110.
- the control unit 120 and the first unit eg, 130, 140
- each element, component, unit/unit, and/or module in the wireless device 100 and 200 may further include one or more elements.
- the controller 120 may be configured with one or more processor sets.
- control unit 120 may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing processor, and a memory control processor.
- memory unit 130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory. volatile memory) and/or a combination thereof.
- FIG. 5 An implementation example of FIG. 5 will be described in more detail with reference to the drawings.
- 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. 5, 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 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. 5, 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 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.
- FIG. 8 shows a structure of an NR system according to an embodiment of the present disclosure.
- the embodiment of FIG. 8 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 the 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. 8 illustrates a case in which 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. 9 illustrates functional division between NG-RAN and 5GC according to an embodiment of the present disclosure.
- the embodiment of FIG. 9 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 based on the lower three layers of the Open System Interconnection (OSI) standard model widely known in communication systems. Layer), L2 (layer 2, second layer), and L3 (layer 3, third layer). Among them, the physical layer belonging to the first layer provides an information transfer service using a physical channel, and 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.
- OSI Open System Interconnection
- FIG. 10 illustrates a radio protocol architecture according to an embodiment of the present disclosure.
- the embodiment of FIG. 10 may be combined with various embodiments of the present disclosure.
- FIG. 10A shows a radio protocol structure for a user plane
- FIG. 10B shows a radio protocol structure 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. Channel
- 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. 11 illustrates a structure of a radio frame of NR according to an embodiment of the present disclosure.
- the embodiment of FIG. 11 may be combined with various embodiments of the present disclosure.
- radio frames can 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 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. 12 illustrates a slot structure of an NR frame according to an embodiment of the present disclosure.
- the embodiment of FIG. 12 may be combined with various embodiments of the present disclosure.
- a slot includes a plurality of symbols in the time domain.
- one slot includes 14 symbols, but in the case of an extended CP, one slot may include 12 symbols.
- 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 a PDCCH, a physical downlink shared channel (PDSCH), or a reference signal (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.
- CSI Channel State Information
- the UE may not transmit a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) outside the active UL BWP.
- the initial BWP may be given as a continuous RB set for the remaining minimum system information (RMSI) CORESET (control resource set) (set by a physical broadcast channel (PBCH)).
- RMSI remaining minimum system information
- PBCH physical broadcast channel
- the initial BWP may be given by a system information block (SIB) for a random access procedure.
- SIB system information block
- the default BWP may be set by an upper layer.
- the initial value of the default BWP may be an initial DL BWP.
- 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. 13 shows an example of a BWP according to an embodiment of the present disclosure.
- the embodiment of FIG. 13 may be combined with various embodiments of the present disclosure. In the embodiment of FIG. 13, 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 neurology.
- the bandwidth may be the number of PRBs in a given neurology.
- V2X or SL communication will be described.
- FIG. 14 illustrates a radio protocol architecture for SL communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 14 may be combined with various embodiments of the present disclosure.
- FIG. 14(a) shows a user plane protocol stack
- FIG. 14(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 Cyclic Redundancy Check (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. 15 shows a terminal performing V2X or SL communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 15 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. 16 shows a terminal operation related to LTE transmission mode 1 or LTE transmission mode 3.
- (a) of FIG. 16 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. 16 shows a terminal operation related to LTE transmission mode 2 or LTE transmission mode 4.
- (b) of FIG. 16 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 can determine the SL transmission resource within the SL resource set by the base station / network or the SL resource set in advance have.
- 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. 17 illustrates three cast types according to an embodiment of the present disclosure.
- the embodiment of FIG. 17 may be combined with various embodiments of the present disclosure.
- FIG. 17A shows broadcast type SL communication
- FIG. 17B shows unicast type SL communication
- FIG. 17C shows 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.
- the transmitting terminal may be a terminal that transmits data to the (target) receiving terminal (RX UE).
- the TX UE may be a terminal that performs PSCCH and/or PSSCH transmission.
- the TX UE may be a terminal that transmits the SL CSI-RS and/or SL CSI report request indicator to the (target) RX UE.
- the TX UE is used for the SL RLM and/or SL RLF operation of the (target) RX UE, a (control) channel (eg, PSCCH, PSSCH, etc.) and/or a reference signal on the (control) channel (eg For example, it may be a terminal that transmits a DM-RS, CSI-RS, etc.).
- a control channel eg, PSCCH, PSSCH, etc.
- a reference signal on the (control) channel eg
- it may be a terminal that transmits a DM-RS, CSI-RS, etc.
- the receiving terminal determines whether the decoding of data received from the transmitting terminal (TX UE) is successful and/or the PSCCH transmitted by the TX UE (related to PSSCH scheduling). It may be a terminal that transmits SL HARQ feedback to the TX UE according to whether detection/decoding is successful. And/or the RX UE may be a UE that performs SL CSI transmission to the TX UE based on the SL CSI-RS and/or SL CSI report request indicator received from the TX UE.
- the RX UE is a terminal that transmits the measured SL (L1) RSRP measurement value to the TX UE based on the (pre-defined) reference signal and/or the SL (L1) RSRP report request indicator received from the TX UE.
- I can.
- the RX UE may be a terminal that transmits its own data to the TX UE.
- the RX UE may be a terminal that performs SL RLM and/or SL RLF operation based on a (pre-set) (control) channel and/or a reference signal on the (control) channel received from the TX UE. .
- the RX UE transmits SL HARQ feedback information for the PSSCH and/or PSCCH received from the TX UE
- the following scheme or some of the following schemes may be considered.
- the following scheme or some of the schemes below may be limitedly applied only when the RX UE successfully decodes/detects the PSCCH scheduling the PSSCH.
- the RX UE may transmit NACK information to the TX UE only when the PSSCH decoding/reception received from the TX UE fails.
- the TX UE may transmit the following information or some of the following information to the RX UE through SCI.
- the TX UE may transmit some or all of the following information to the RX UE through a first SCI (FIRST SCI) and/or a second SCI (SECOND SCI).
- FIRST SCI first SCI
- SECOND SCI second SCI
- -PSSCH (and/or PSCCH) related resource allocation information eg, time/frequency resource location/number, resource reservation information (eg, period)
- SL CSI transmission indicator (or SL (L1) RSRP (and/or SL (L1) RSRQ and/or SL (L1) RSSI) information transmission indicator)
- -Reference signal (eg, DM-RS, etc.) information related to decoding (and/or channel estimation) of data transmitted through PSSCH.
- DM-RS e.g., DM-RS, etc.
- information related to decoding (and/or channel estimation) of data transmitted through PSSCH may be information related to the pattern of the (time-frequency) mapping resource of the DM-RS, RANK information, antenna port index information, and the like.
- the PSCCH is SCI and/or FIRST SCI and/or SECOND SCI can be substituted/replaced. And/or SCI may be replaced/replaced with PSCCH and/or FIRST SCI and/or SECOND SCI. And/or, for example, since the TX UE can transmit SECOND SCI to the RX UE through the PSSCH, the PSSCH can be replaced/replaced with SECOND SCI.
- the first SCI including the first SCI configuration field group is It may be referred to as FIRST SCI
- the second SCI including the second SCI configuration field group may be referred to as SECOND SCI.
- the FIRST SCI may be transmitted to the receiving terminal through the PSCCH.
- the SECOND SCI may be transmitted to a receiving terminal through a (independent) PSCCH, or may be piggybacked with data through a PSSCH and transmitted.
- configuration or “definition” is from a base station or network (through pre-defined signaling (eg, SIB, MAC, RRC, etc.)) (resource pool specific As) can mean (PRE)CONFIGURATION.
- pre-defined signaling eg, SIB, MAC, RRC, etc.
- resource pool specific As can mean (PRE)CONFIGURATION.
- RLF may be determined based on the OUT-OF-SYNCH (OOS) indicator or the IN-SYNCH (IS) indicator
- OOS OUT-OF-SYNCH
- IS IN-SYNCH
- RB may be replaced/substituted with SUBCARRIER.
- a packet (PACKET) or traffic (TRAFFIC) may be replaced/replaced with a TB or MAC PDU depending on a layer to be transmitted.
- CBG or CG may be replaced/substituted with TB.
- SOURCE ID may be replaced/replaced with DESTINATION ID.
- L1 ID may be replaced/replaced with L2 ID.
- the L1 ID may be an L1 SOURCE ID or an L1 DESTINATION ID.
- the L2 ID may be an L2 SOURCE ID or an L2 DESTINATION ID.
- the operation of the transmitting terminal to reserve/select/determine retransmission resources is a potential (POTENTIAL) retransmission for which the transmitting terminal is actually used based on the SL HARQ feedback information received from the receiving terminal. It may mean an operation of reserving/selecting/determining a resource.
- SL MODE 1 may refer to a resource allocation method or a communication method in which the base station directly schedules sidelink transmission (SL TX) resources of the terminal through predefined signaling (eg, DCI).
- SL MODE 2 may refer to a resource allocation method or a communication method in which the UE independently selects the SL TX resource from the base station or the network or within a preset resource pool.
- the (physical) channel used by the RX UE to transmit at least one of the following information to the TX UE may be referred to as PSFCH.
- Time Division Multiplexing between at least a PSCCH/PSSCH and a Physical Sidelink Feedback Channel (PSFCH) is a PSFCH format for a sidelink in a slot. It is allowed in case of transmission.
- TDM Time Division Multiplexing
- PSCCH/PSSCH Physical Sidelink Feedback Channel
- HARQ hybrid automatic repeat request
- groupcast sidelink communication HARQ feedback transmission of the terminal may be supported. That is, in a unicast sidelink communication or groupcast sidelink communication situation, the receiving terminal may transmit the HARQ feedback corresponding to the PSCCH and/or PSSCH received from the transmitting terminal to the transmitting terminal.
- HARQ feedback option 1 or HARQ feedback option 2 may be supported.
- the receiving terminal can transmit only HARQ NACK (Negative Acknowledgement) to the transmitting terminal. That is, the receiving terminal may not transmit HARQ Acknowledgment (ACK) to the transmitting terminal.
- HARQ feedback option 1 is used for sidelink groupcast transmission, a plurality of receiving terminals (eg, all receiving terminals or some receiving terminals in a group) may share PSFCH resources to transmit HARQ feedback.
- the receiving terminal may transmit HARQ ACK or HARQ NACK to the transmitting terminal.
- HARQ feedback option 2 is used for sidelink groupcast transmission, a plurality of receiving terminals (e.g., each receiving terminal in a group) use a separate PSFCH resource to transmit HARQ ACK or HARQ NACK. Can be used.
- each PSFCH resource may be mapped to a time resource, a frequency resource, and a code resource.
- the PSFCH resource may be periodically (in advance) set in a period of N slots.
- N may be a positive integer.
- N can be 2 or 4.
- a sequence-based PSFCH format having one symbol may be supported.
- the one symbol does not include an automatic gain control (AGC) training period.
- AGC automatic gain control
- the sequence-based PSFCH format having the one symbol may be applicable to HARQ feedback in unicast.
- the sequence-based PSFCH format having the one symbol may be applicable to HARQ feedback in a groupcast including HARQ feedback option 1 and HARQ feedback option 2.
- the sequence of the sequence-based PSFCH format having one symbol may be generated similarly to the sequence of PUCCH format 0.
- HARQ feedback option 1 based on TX-RX distance-based HARQ feedback for groupcast
- the receiving terminal if the distance between the transmitting terminal and the receiving terminal is less than or equal to the communication range requirement, the receiving terminal is assigned to the PSSCH. HARQ feedback for can be transmitted. Otherwise, the receiving terminal may not transmit HARQ feedback for the PSSCH.
- the location of the transmitting terminal may be indicated by the SCI related to the PSSCH.
- HARQ feedback related to PSSCH transmission is expected to be in slot n+a.
- a may be the smallest integer greater than or equal to K under the condition that slot n+a includes the PSFCH resource.
- the implicit mechanism may be used to determine at least the frequency and/or code domain resources of the PSFCH in the configured resource pool.
- the transmitting terminal when the base station allocates resources for sidelink transmission to the transmitting terminal, when the transmitting terminal performing the sidelink transmission through the resource receives the HARQ feedback for the sidelink transmission from the receiving terminal, the transmitting terminal performs HARQ It is necessary to report information on feedback to the base station.
- the base station allocates the first PSSCH and/or the first PSCCH to the transmitting terminal for initial transmission, and allocates the second PSSCH and/or the second PSCCH to the transmitting terminal for retransmission based on sidelink HARQ feedback.
- the transmitting terminal may transmit sidelink information to the receiving terminal through the first PSSCH and/or the first PSCCH.
- the sidelink information may include at least one of sidelink data, sidelink control information, sidelink service, and sidelink packet.
- the transmitting terminal may report information on HARQ feedback related to HARQ NACK to the base station through the PUCCH, and the transmitting terminal may transmit a second PSSCH and/or a second PSCCH. Through this, the sidelink information can be retransmitted to the receiving terminal. Thereafter, when the transmitting terminal receives the HARQ NACK from the receiving terminal, the transmitting terminal may report information on HARQ feedback related to HARQ NACK to the base station through the PUCCH. In this case, the base station may allocate additional sidelink transmission resources to the transmitting terminal.
- the base station allocates the first PSSCH and/or the first PSCCH to the transmitting terminal for initial transmission, and allocates the second PSSCH and/or the second PSCCH to the transmitting terminal for retransmission based on sidelink HARQ feedback.
- the transmitting terminal may transmit sidelink information to the receiving terminal through the first PSSCH and/or the first PSCCH.
- the transmitting terminal may report information on HARQ feedback related to the HARQ ACK to the base station through PUCCH.
- the base station may allocate resources related to the second PSSCH and/or the second PSCCH to another terminal, or for uplink transmission of the transmitting terminal.
- NR sidelink mode 1 operation in which the base station allocates sidelink transmission resources to the terminal, or LTE sidelink mode 1 or mode 3 operation, information on the HARQ feedback received by the transmitting terminal is transmitted to the base station. Reporting to the base station may be necessary for efficient sidelink resource management of the base station.
- sidelink transmission based on NR sidelink resource allocation mode 1 and sidelink transmission based on LTE are performed in the time domain.
- the terminal may omit (drop) sidelink transmission based on the NR sidelink resource allocation mode 1 according to a predefined rule.
- the terminal NR may determine not to perform sidelink transmission based on NR sidelink resource allocation mode 1 according to a predefined rule.
- sidelink transmission based on NR sidelink resource allocation mode 1 and sidelink reception based on LTE are performed in the time domain.
- the terminal may omit (drop) sidelink transmission based on the NR sidelink resource allocation mode 1 according to a predefined rule.
- the UE may perform NR according to a predefined priority-based reception omission rule.
- Sidelink transmission based on the sidelink resource allocation mode 1 may be omitted.
- the UE may determine not to perform sidelink transmission based on NR sidelink resource allocation mode 1 according to a predefined rule.
- sidelink transmission based on NR sidelink resource allocation mode 1 may be referred to as MODE 1 NR SL TX
- NR based sidelink transmission may be referred to as NR SL TX
- NR based The sidelink reception of may be referred to as NR SL RX.
- LTE-based sidelink transmission may be referred to as LTE SL TX
- mode 3 based LTE sidelink transmission may be referred to as MODE 3 LTE SL TX
- mode 4 based LTE side Link transmission may be referred to as MODE 4 LTE SL TX.
- LTE-based sidelink reception may be referred to as LTE SL RX
- mode 3 based LTE sidelink reception may be referred to as MODE 3 LTE SL RX
- mode 4 based LTE side Link reception may be referred to as MODE 4 LTE SL RX.
- the terminal may not be able to satisfy the requirements (e.g., reliability) related to the packet/traffic to be transmitted. have.
- the UE may not be able to satisfy the requirements (e.g., reliability) related to the packet/traffic it intends to transmit. have.
- the NR base station has information on the type/type of service related to the transport packet/traffic reported from the terminal, information on QoS parameters, information on SL quality (e.g., SL CSI, SL Reference Signal (RSRP)). Received Power), RSRQ (Reference Signal Received Quality)), etc., it is assumed that K transmission resources (e.g., NR MODE 1 transmission resources) (necessary to achieve related requirements) are allocated to the terminal. In this case, the UE may not be able to actually perform MODE 1 NR SL TX in some or all of the K transmission resources according to a predefined rule.
- K transmission resources e.g., NR MODE 1 transmission resources
- the UE may omit the MODE 1 NR SL TX on some or all of the K transmission resources according to a predefined rule. Therefore, the terminal may not finally meet the QoS requirements related to the transport packet/traffic. Further, for example, since the NR base station cannot (exactly) know whether the terminal has omitted the MODE 1 NR SL TX, the NR base station has additional transmission resources (eg, additional transmission resources corresponding to the resource from which the SL TX is omitted). Or, an additional transmission resource corresponding to the number of resources in which the SL TX is omitted) cannot be allocated to the terminal.
- additional transmission resources eg, additional transmission resources corresponding to the resource from which the SL TX is omitted.
- the NR base station cannot (exactly) know whether the terminal has decided not to perform the MODE 1 NR SL TX, the NR base station cannot allocate additional transmission resources to the terminal. Therefore, the UE needs to report information related to MODE 1 NR SL TX to the base station.
- a method for a terminal to report information related to sidelink transmission to a base station and an apparatus supporting the same will be described.
- the sidelink mode 1 may be transmission mode 1 or transmission mode 3 of LTE
- the sidelink mode 2 may be transmission mode 2 or transmission mode 4 of LTE
- the sidelink mode 1 may be a resource allocation mode 1 of NR
- the sidelink mode 2 may be a resource allocation mode 2 of NR.
- FIG. 18 is a diagram for explaining a problem in which transmission resources collide between terminals performing different modes of operation.
- the embodiment of FIG. 18 may be combined with various embodiments of the present disclosure.
- the base station may transmit information on the SL transmission resource to the transmitting terminal.
- the transmitting terminal may be a terminal that performs sidelink mode 1 operation.
- the base station may schedule and/or allocate SL transmission resources to the transmitting terminal.
- the transmitting terminal may transmit sidelink information to the receiving terminal.
- the transmitting terminal may transmit (initial) sidelink information to the receiving terminal on the (initial) transmission resource scheduled and/or allocated by the base station.
- the sidelink information may include at least one of sidelink data, sidelink control information, sidelink channel, sidelink signal, sidelink service, and/or sidelink packet.
- the sidelink information may be transmitted on a resource related to PSSCH and/or a resource related to PSCCH.
- the transmitting terminal may receive SL HARQ feedback from the receiving terminal.
- the SL HARQ feedback may be received in response to the sidelink information.
- the transmitting terminal may report information on the SL HARQ feedback received from the receiving terminal to the base station through a preset resource (eg, PUCCH).
- a preset resource eg, PUCCH
- the base station additionally schedules resources for retransmission to the transmitting terminal operating in sidelink mode 1. And/or can be assigned.
- the base station provides information on transmission resources selected and/or reserved by other transmission terminals operating in sidelink mode 2 on the same resource pool (e.g., information on time domain, information on frequency domain, period Information, etc.), the retransmission resources scheduled and/or allocated by the base station to the transmitting terminal operating in the sidelink mode 1 are selected and/or reserved by the other transmitting terminals operating in the sidelink mode 2. Some or all may overlap.
- other transmitting terminals operating in sidelink mode 2 on the same resource pool secure (sufficient) time for sensing the retransmission resources additionally or dynamically scheduled and/or allocated by the base station to the transmitting terminals operating in sidelink mode 1 It can be difficult to do. Therefore, another transmitting terminal operating in sidelink mode 2 on the same resource pool selects a transmission resource partially or entirely overlapping with the retransmission resource scheduled and/or allocated by the base station to the transmitting terminal operating in sidelink mode 1 and/or You can also make a reservation.
- the SL HARQ feedback received by the transmitting terminal from the receiving terminal is ACK
- the transmitting terminal reports the ACK to the base station
- the base station previously scheduled and/or assigned to the transmitting terminal operating in sidelink mode 1 (corresponding After the time point)
- the remaining retransmission resources may be released, or may be used for other purposes (eg, UL or SL transmission resources of other terminals).
- a transmitting terminal operating in sidelink mode 1 performs sidelink transmission.
- a method for performing sidelink transmission by a transmitting terminal operating in sidelink mode 1 and an apparatus supporting the same according to an embodiment of the present disclosure will be described.
- a transmission terminal operating in sidelink mode 1 may be referred to as a mode 1 transmission terminal
- a transmission terminal operating in sidelink mode 2 may be referred to as a mode 2 transmission terminal.
- the mode 1 transmitting terminal may transmit sidelink information to the receiving terminal on some transmission resources. .
- FIG. 19 illustrates a method of performing sidelink transmission by using a transmission resource related to a sidelink by a mode 1 transmission terminal according to an embodiment of the present disclosure.
- the embodiment of FIG. 19 may be combined with various embodiments of the present disclosure.
- the base station may schedule and/or allocate a first transmission resource and a second transmission resource to a transmission terminal.
- the first transmission resource and the second transmission resource may be resources related to sidelink transmission of the transmitting terminal.
- the base station may schedule and/or allocate a first transmission resource and a second transmission resource to a transmitting terminal through a sidelink grant and/or a sidelink DCI.
- the transmitting terminal is a mode 1 transmitting terminal.
- the base station may schedule and/or allocate PUCCH resources to the transmitting terminal.
- the PUCCH resource may be a resource for the transmitting terminal to report information on the SL HARQ feedback received from the receiving terminal to the base station.
- the base station may schedule and/or allocate PSFCH resources to a transmitting terminal and/or a receiving terminal.
- the PSFCH resource may be a resource for a transmitting terminal to receive SL HARQ feedback from a receiving terminal.
- the transmitting terminal and/or the receiving terminal may determine the PSFCH resource according to an implicit rule.
- PSSCH and/or PSCCH related (transmission) parameters e.g., PSCCH and/or PSSCH related slot index, PSCCH and/or PSSCH related subchannel index, source ID (Identity), destination ID, local group ID, etc.
- the receiving terminal may determine the PSFCH resource used to transmit HARQ feedback to the transmitting terminal.
- the transmitting terminal when the base station allocates resources related to sidelink transmission to the transmitting terminal, the transmitting terminal is the PSSCH and/or PSCCH-related (transmission) parameters (e.g., PSCCH and/or PSSCH-related slot index and PSCCH And/or an index of a subchannel related to the PSSCH) from the base station.
- PSSCH and/or PSCCH related (transmission) parameters e.g., PSCCH and/or PSSCH-related slot index and PSCCH And/or an index of a subchannel related to the PSSCH
- PSSCH and/or PSCCH related (transmission) parameters e.g, PSCCH and/or PSSCH-related slot index and The index of the subchannel related to the PSCCH and/or PSSCH
- the source ID may be an identifier for identifying a transmitting side (eg, a transmitting terminal) of sidelink information in sidelink communication.
- the destination ID may be an identifier for identifying a receiving side (eg, a receiving terminal) of sidelink information in sidelink communication.
- the local group ID may be an identifier for identifying a group consisting of terminals in groupcast sidelink communication.
- the source ID, destination ID, and/or local group ID may be transmitted through a layer-2 layer (eg, a MAC layer).
- the source ID, destination ID, and/or local group ID may be provided from an upper layer (eg, an application layer), or may be derived from an ID provided by a higher layer. have.
- the transmitting terminal when a PUCCH resource and/or a PSFCH resource is located or exists between the first transmission resource and the second transmission resource, the transmitting terminal is the first transmission resource (e.g., the previous sidelink grant And/or a first transmission resource allocated and/or scheduling based on a sidelink DCI) may be used for transmission of sidelink information. And/or, the transmitting terminal may use the second transmission resource to confirm whether the base station has successfully received the information on the SL HARQ feedback (eg, NACK) reported to the base station by itself. And/or, the transmitting terminal may use the second transmission resource to check whether the base station schedules and/or allocates the retransmission resource. For example, the transmitting terminal may transmit sidelink information using a first transmission resource, but may not transmit sidelink information using a second transmission resource.
- the first transmission resource e.g., the previous sidelink grant And/or a first transmission resource allocated and/or scheduling based on a sidelink DCI
- the transmitting terminal may use the second transmission resource
- scheduling information for the second resource may be included in the SCI transmitted by the transmitting terminal on the first resource.
- a mode 2 transmission terminal that has successfully decoded the SCI transmitted on the first resource can recognize that the second transmission resource is a provisional (re) transmission resource to be used by the transmission terminal.
- the mode 2 transmission terminal may select and/or reserve a resource other than the second transmission resource.
- the first transmission resource and/or the second transmission resource may be composed of one or more transmission resources.
- the base station if the base station receives the NACK information from the transmitting terminal through the PUCCH resource between the first transmission resource and the second transmission resource, the base station sends a third transmission resource and a fourth transmission resource to the transmitting terminal. Can be additionally scheduled and/or assigned.
- FIG. 20 illustrates a method of additionally scheduling and/or allocating a third transmission resource and a fourth transmission resource to a transmission terminal by a base station according to an embodiment of the present disclosure.
- the embodiment of FIG. 20 may be combined with various embodiments of the present disclosure.
- the base station if the base station receives NACK information from a transmitting terminal through a PUCCH resource between a first transmission resource and a second transmission resource, the base station additionally schedules a third transmission resource and a fourth transmission resource to the transmitting terminal. And/or can be assigned.
- the second transmission resource and the third transmission resource may be completely or partially overlapping (location) resources. This is to alleviate a transmission resource collision problem between the transmission terminal (ie, mode 1 transmission terminal) and the mode 2 transmission terminal.
- the second transmission resource and the third transmission resource may be independent (different location) resources.
- the transmitting terminal may use only the third transmission resource for transmission of sidelink information. And/or, the transmitting terminal may use the fourth transmission resource to confirm whether the base station has successfully received the information (eg, NACK) on the SL HARQ feedback reported to the base station by itself. And/or, the transmitting terminal may use the fourth transmission resource to check whether the base station schedules and/or allocates the retransmission resource. For example, the transmitting terminal may transmit the sidelink information using the third transmission resource, but may not transmit the sidelink information using the fourth transmission resource.
- scheduling information for the fourth resource may be included in the SCI transmitted by the transmitting terminal on the third resource.
- the mode 2 transmission terminal using the same resource pool as the mode 1 transmission terminal is used for transmission resources (eg, mode 1 transmission resources scheduled and/or allocated by the base station). Sensing can be performed effectively.
- a mode 2 transmission terminal having successfully decoded the SCI transmitted on the third resource may recognize that the fourth transmission resource is a provisional (re)transmission resource to be used by the mode 1 transmission terminal.
- the mode 2 transmission terminal may select and/or reserve a resource other than the fourth transmission resource.
- the transmitting terminal uses all of the transmission resources. Sidelink information can be transmitted. Or, if the PUCCH resource and/or PSFCH resource is located or does not exist between the transmission resources scheduled and/or allocated by the base station to the transmitting terminal, the transmitting terminal includes a predetermined number of transmission resources and / Or the sidelink information can be transmitted using only transmission resources of a specific location.
- FIG. 21 illustrates a method for a first device to transmit sidelink information according to an embodiment of the present disclosure.
- the embodiment of FIG. 21 may be combined with various embodiments of the present disclosure.
- the first device may receive information on the first sidelink transmission resource and the second sidelink transmission resource from the base station.
- the first device may receive information on a third resource for reporting the SL HARQ feedback received from the second device to the base station from the base station.
- the first device may transmit sidelink information to the second device using a first sidelink transmission resource and/or a second sidelink transmission resource based on the location of the third resource. For example, if the third resource is located between the first sidelink transmission resource and the second sidelink transmission resource, the first device may transmit sidelink information to the second device by using the first sidelink transmission resource. . In this case, the first device may not use the second sidelink transmission resource for sidelink transmission.
- FIG. 22 illustrates a method of receiving sidelink information by a second device according to an embodiment of the present disclosure.
- the embodiment of FIG. 22 may be combined with various embodiments of the present disclosure.
- the second device may receive sidelink control information including information on the second resource from the first device on the first resource.
- the second device may select and/or reserve a resource other than the second resource.
- FIG. 23 illustrates a procedure for a terminal to report information related to sidelink transmission to a base station according to an embodiment of the present disclosure.
- the embodiment of FIG. 23 may be combined with various embodiments of the present disclosure.
- the base station may transmit information on resources related to the sidelink to the terminal.
- the base station may allocate resources related to the sidelink to the terminal or may allocate in advance.
- the base station may allocate resources related to the sidelink to the terminal through SL DCI.
- the resource related to the sidelink may include at least one of a resource related to the PSCCH and/or a resource related to the PSSCH.
- the base station may be an NR base station or a gNB.
- the terminal may be a terminal that performs sidelink communication based on the NR sidelink resource allocation mode 1.
- the terminal may be a terminal that performs sidelink communication based on LTE sidelink mode 3 or LTE sidelink mode 4.
- resources related to the sidelink may be physical resources (eg, PSCCH resources and/or PSSCH resources).
- the base station may transmit information on resources related to uplink to the terminal.
- the base station may allocate resources related to uplink to the terminal or may allocate in advance.
- the uplink-related resource may be a resource for the UE to report information on whether MODE 1 NR SL TX is omitted to the base station.
- the uplink-related resource may be a resource for reporting information on whether the UE has determined not to perform MODE 1 NR SL TX to the base station.
- the uplink-related resource may be a resource for reporting information on whether the UE performs MODE 1 NR SL TX to the base station.
- the uplink-related resource may be a resource for the transmitting terminal to report the SL HARQ feedback information received from the receiving terminal to the base station.
- the uplink-related resource may be a resource related to a resource for MODE 1 NR SL TX of the terminal.
- the base station may allocate resources related to uplink to the terminal through DCI.
- the uplink-related resource may be a PUCCH-related resource.
- resources related to uplink may be physical resources (eg, PUCCH resources and/or PUSCH resources).
- step S2330 the UE may determine whether to perform MODE 1 NR SL TX.
- the terminal when the MODE 1 NR SL TX and the LTE SL TX of the terminal partially or completely overlap in the time domain, the terminal performs the MODE 1 NR SL TX on the resources related to the overlapped sidelink according to a predefined rule. You can decide whether to do it or not.
- the UE when the MODE 1 NR SL TX and SL RX of the UE partially or all overlap in the time domain, the UE performs the MODE 1 NR SL TX on the resources related to the overlapped sidelink according to a predefined rule. You can decide whether to do it or not.
- SL RX may be NR SL RX.
- SL RX may be LTE SL RX, MODE 3 LTE SL RX or MODE 4 LTE SL RX.
- the terminal skips transmission and/or reception based on a predefined priority.
- it may be determined whether to perform MODE 1 NR SL TX. For example, if MODE 1 NR SL TX and LTE SL TX of the terminal partially or completely overlap in the time domain, if the priority related to NR SL TX is lower than the priority related to LTE SL TX, the terminal It can be determined not to perform the MODE 1 NR SL TX on the resource related to the sidelink.
- the terminal It can be determined not to perform MODE 1 NR SL TX on the resource related to the link.
- the terminal skips transmission and/or reception based on a predefined priority. It may be determined whether to perform MODE 1 NR SL TX according to a rule related to. For example, if the MODE 1 NR SL TX and SL RX of the UE partially or all overlap in the time domain, if the priority related to NR SL TX is lower than the priority related to SL RX, the UE will perform the overlapped sidelink. It can be determined not to perform MODE 1 NR SL TX on the resource related to the.
- the UE It can be determined not to perform MODE 1 NR SL TX on the related resource.
- the UE may determine the priority between NR SL and LTE (ie, E-UTRA) SL based on Table 5, and the UE may omit any one of NR SL related transmission/reception or LTE SL related transmission/reception. have.
- NR SL and LTE ie, E-UTRA
- the UE may reduce the transmission power of the MODE 1 NR SL TX according to a preset rule. In this case, the UE may not perform the MODE 1 NR SL TX by reducing the power allocated to the MODE 1 NR SL TX to zero. For example, when the UE simultaneously performs SL TX and UL TX on the same carrier, if the SL TX and UL TX overlap in the time domain, the UE may not perform MODE 1 NR SL TX.
- the UE may determine the priority between SL TX and UL TX based on Table 6.
- the UE may perform either SL TX or UL TX based on Table 7 according to the determined priority. That is, the UE may omit either SL TX or UL TX based on Table 7 according to the determined priority.
- the UE determines not to perform MODE 1 NR SL TX. That is, it is assumed that the UE omits the MODE 1 NR SL TX.
- the terminal may transmit information related to sidelink transmission to the base station.
- information related to sidelink transmission may be transmitted in the uplink-related resource allocated by the base station.
- the terminal when the terminal omits the MODE 1 NR SL TX, the terminal transmits information related to sidelink transmission to the base station in resources related to the uplink.
- the uplink-related resource may be a resource related to a transmission resource for which the terminal skips transmission.
- information related to sidelink transmission may be information set in advance.
- information related to sidelink transmission may be NACK information.
- the information related to sidelink transmission may be NACK information indicating to the base station that the terminal does not perform MODE 1 NR SL TX.
- the information related to sidelink transmission may be NACK information informing the base station that the UE omits the MODE 1 NR SL TX.
- information related to sidelink transmission may be a preset status bit or indicator.
- the information related to sidelink transmission may be a status bit or indicator indicating that the terminal does not perform MODE 1 NR SL TX.
- the information related to sidelink transmission may be a status bit or an indicator indicating that the UE omits MODE 1 NR SL TX.
- the base station reports information related to sidelink transmission to the base station through uplink-related resources previously allocated by the base station. Can be set.
- the transmitting terminal reports SL HARQ feedback information (received from the receiving terminal) to the base station through PUCCH resources (hereinafter, SLHQ_PUCCH operation) to the transmitting terminal.
- PUCCH resources hereinafter, SLHQ_PUCCH operation
- SLHQ_PUCCH operation PUCCH resources
- the UE uses the PUCCH resource configured for reporting of SL HARQ feedback information.
- Link transmission-related information (eg, NACK information, status bit or indicator) can be reported to the base station.
- the transmitting terminal transmits (data related) PSSCH and/or PSCCH to the receiving terminal ( Despite not actually), the UE may report information related to the sidelink transmission (eg, NACK information, status bit or indicator) to the base station through the PUCCH resource configured for reporting of SL HARQ feedback information.
- the transmitting terminal may follow some operations of a specific procedure or may use some operations of a specific procedure.
- the base station is A) the transmitting terminal i) transmits (data related) PSSCH and/or PSCCH to the receiving terminal, and ii) NACK from the receiving terminal in response to the transmitted (data related) PSSCH and/or PSCCH Receiving the information, iii) reporting the received NACK information to the base station through the PUCCH resource set by the base station (for additional retransmission resource allocation request) and B) the transmitting terminal i) for the reasons described above (data related) Without transmitting the PSSCH and/or PSCCH, ii) generating NACK information and reporting to the base station through the PUCCH resource set by the base station may be interpreted/regarded in the same manner.
- ii) generating NACK information and reporting to the base station through the PUCCH resource set by the base station may be interpreted/regarded in the same manner.
- the above-described rule(s) can be limitedly applied only when the terminal is set to simultaneously perform MODE 1 NR SL TX and LTE SL TX (eg, MODE 3 LTE SL TX or MODE 4 LTE SL TX). have. And/or, for example, the above-described rule(s) may be limitedly applied only when the UE is configured to simultaneously perform MODE 1 NR SL TX and RX.
- the terminal e.g., a terminal performing sidelink transmission based on NR MODE 1 provides information on whether the corresponding (simultaneous) operation is performed to the base station through pre-set signaling (e.g., physical layer signaling or higher layer signaling). Can be set to report.
- FIG. 24 illustrates a procedure for a terminal to report NACK information to a base station according to an embodiment of the present disclosure.
- the embodiment of FIG. 24 may be combined with various embodiments of the present disclosure.
- the base station may transmit a DCI including information related to SL resources and/or information related to UL resources to the UE through the PDCCH.
- the SL resources may include PSCCH resources and/or PSSCH resources.
- UL resources may include PUCCH resources and/or PUSCH resources.
- the DCI may be a DCI for allocating/scheduling resources related to a dynamic grant.
- the terminal may determine not to perform SL transmission.
- the terminal may determine not to perform SL transmission on the SL resource according to various embodiments of the present disclosure.
- step S2430 if the UE determines not to perform SL transmission on the SL resource, the UE may generate NACK information. And, the terminal may transmit the NACK information to the base station on the UL resource.
- the base station may transmit a DCI including information related to SL resources and/or information related to UL resources to the terminal through the PDCCH in response to the NACK information.
- the DCI may be a DCI for allocating/scheduling resources related to a dynamic grant.
- FIG. 25 illustrates a procedure for a terminal to report NACK information to a base station according to an embodiment of the present disclosure.
- the embodiment of FIG. 25 may be combined with various embodiments of the present disclosure.
- the base station may transmit an RRC message including information related to SL resources and/or information related to UL resources to the UE.
- the base station may transmit an RRC message including information related to SL resources and/or information related to UL resources to the terminal, and the base station may transmit a DCI for activating or deactivating the resource to the terminal.
- the resource may be a periodic resource.
- the resource may be a resource related to a configured grant.
- FIG. 26 illustrates an example of a resource related to a set grant according to an embodiment of the present disclosure.
- the embodiment of FIG. 26 may be combined with various embodiments of the present disclosure.
- one or more SL resources may be allocated to a UE within one period.
- the one or more SL resources may be periodically repeated.
- the UE may determine not to perform SL transmission.
- the terminal may determine not to perform SL transmission on the one or more SL resources according to various embodiments of the present disclosure.
- the terminal may determine not to perform SL transmission within the period of FIG. 26.
- the terminal may determine not to perform SL transmission on resource A, resource B, and resource C of FIG. 26.
- the terminal may generate NACK information. And, the terminal may transmit the NACK information to the base station on the UL resource.
- the UL resource may be a PUCCH resource and/or a PUSCH resource.
- the UL resource may be located after a time offset from the PSFCH resource related to the last PSSCH resource within the period of FIG. 26.
- the terminal may receive information related to the time offset from the base station.
- the base station may transmit a DCI including information related to SL resources and/or information related to UL resources to the terminal through the PDCCH.
- the DCI may be a DCI for allocating/scheduling resources related to a dynamic grant.
- the terminal may report information on whether MODE 1 NR SL TX is performed to the base station. Accordingly, the base station can know whether the terminal has omitted the MODE 1 NR SL TX, and for example, the base station can allocate additional transmission resources to the terminal. Accordingly, the terminal can perform efficient sidelink transmission.
- FIG. 27 illustrates a method for a first device to determine whether to perform sidelink transmission on a first resource according to an embodiment of the present disclosure.
- the embodiment of FIG. 27 may be combined with various embodiments of the present disclosure.
- the first device may determine whether to perform sidelink transmission on the first resource.
- the first resource may include a resource related to PSCCH and/or a resource related to PSSCH.
- the base station may allocate the first resource to the first device through the sidelink DCI.
- the first device may transmit information related to sidelink transmission to the base station in the second resource based on the determination.
- the information related to sidelink transmission may include information indicating that sidelink transmission is not performed.
- information related to sidelink transmission may include NACK information, a preset status bit, and/or a preset indicator.
- the second resource may include a resource related to PUCCH.
- the base station may allocate the second resource to the first device through DCI.
- FIG. 28 illustrates a method for a base station to receive information related to sidelink information from a first device in a second resource according to an embodiment of the present disclosure.
- the embodiment of FIG. 28 may be combined with various embodiments of the present disclosure.
- the base station may receive information related to sidelink transmission from the first device in the second resource.
- the base station may allocate the first resource to the first device through the sidelink DCI.
- the first resource may include a resource related to PSCCH and/or a resource related to PSSCH.
- the information related to sidelink transmission may include information indicating that sidelink transmission is not performed.
- information related to sidelink transmission may include NACK information, a preset status bit, and/or a preset indicator.
- the second resource may include a resource related to PUCCH.
- the base station may allocate the second resource to the first device through DCI.
- the base station may additionally allocate resources to the first device based on information related to sidelink transmission.
- FIG. 29 illustrates a method for a first device to determine whether to perform sidelink transmission in a first resource on one or more BWPs, according to an embodiment of the present disclosure.
- the embodiment of FIG. 29 may be combined with various embodiments of the present disclosure.
- the first device may set one or more BWPs.
- the first device may determine whether to perform sidelink transmission in the first resource on one or more BWPs.
- the first resource may include a resource related to PSCCH and/or a resource related to PSSCH.
- the base station may allocate the first resource to the first device through the sidelink DCI.
- the first device may transmit information related to sidelink transmission to the base station in the second resource based on the determination.
- the information related to sidelink transmission may include information indicating that sidelink transmission is not performed.
- information related to sidelink transmission may include NACK information, a preset status bit, and/or a preset indicator.
- the second resource may include a resource related to PUCCH.
- the base station may allocate the second resource to the first device through DCI.
- FIG. 30 illustrates a method for a base station to receive information related to sidelink information from a first device in a second resource on one or more BWPs according to an embodiment of the present disclosure.
- the embodiment of FIG. 30 may be combined with various embodiments of the present disclosure.
- the base station may set one or more BWPs.
- the base station may receive information related to sidelink transmission from the first device in the second resource on one or more BWPs.
- the base station may allocate the first resource to the first device through the sidelink DCI.
- the first resource may include a PSCCH-related resource and/or a PSSCH-related resource.
- the information related to sidelink transmission may include information indicating that sidelink transmission is not performed.
- information related to sidelink transmission may include NACK information, a preset status bit, and/or a preset indicator.
- the second resource may include a resource related to PUCCH.
- the base station may allocate the second resource to the first device through DCI.
- the base station may additionally allocate resources to the first device based on information related to sidelink transmission.
- FIG. 31 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 31 may be combined with various embodiments of the present disclosure.
- the first device may receive information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource from a first base station.
- the first device may determine whether to perform SL transmission on the first SL resource.
- the first device may transmit NACK information to the first base station on the first UL resource.
- the first device may determine whether to perform the SL transmission on the first SL resource.
- the information related to the first SL resource and the information related to the first UL resource may be included in a downlink control information (DCI) or a radio resource control (RRC) message received from the first base station.
- DCI downlink control information
- RRC radio resource control
- the first SL resource may be one or more SL resources allocated by a dynamic grant, the SL transmission may not be performed on the one or more SL resources, and the first UL resource It may be a UL resource related to the one or more SL resources.
- the first SL resource may be one or more SL resources within one transmission period allocated by a configured grant, and the SL transmission is performed on the one or more SL resources within the one transmission period. It may not be possible, and the first UL resource may be a UL resource related to the one or more SL resources within the one transmission period.
- the first SL resource and the second SL resource may overlap in a time domain
- the first SL resource may be a resource related to NR-based SL transmission
- the second SL resource may be E-UTRA It may be a resource related to SL communication based on (evolved universal terrestrial radio access).
- the first device determines not to perform the SL transmission on the first SL resource. I can.
- the first device may select the second SL resource based on sensing.
- the first device may receive information related to the second SL resource from the second base station.
- the first base station may be an NR-based base station
- the second base station may be an E-UTRA-based base station.
- the first device may determine not to perform the SL transmission on the first SL resource.
- the first SL resource and the plurality of second UL resources may overlap in a time domain, and at least one of a plurality of priorities related to a plurality of UL transmissions on the plurality of second UL resources is the first
- the first device may determine not to perform the SL transmission on the first SL resource.
- the first device in response to the NACK information, is a DCI including information related to a third SL resource and information related to a third UL resource through a physical downlink control channel (PDCCH) ( downlink control information) may be received from the first base station.
- the first device may transmit a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to the second device on the third SL resource.
- the first device may receive a hybrid automatic repeat request (HARQ) feedback from the second device on a physical sidelink feedback channel (PSFCH) resource related to the PSSCH.
- HARQ hybrid automatic repeat request
- the first device may transmit the HARQ feedback to the first base station on the third UL resource.
- the SL transmission may include at least one of PSCCH (physical sidelink control channel) transmission or PSSCH (physical sidelink shared channel) transmission
- the first UL resource is a PUCCH (physical uplink control channel) resource or It may include at least any one of physical uplink shared channel (PUSCH) resources.
- PSCCH physical sidelink control channel
- PSSCH physical sidelink shared channel
- the first device may generate the NACK information.
- the processor 102 of the first device 100 can control the transceiver 106 to receive information related to the first SL (sidelink) resource and the information related to the first UL (uplink) resource from the first base station. have.
- the processor 102 of the first device 100 may determine whether to perform SL transmission on the first SL resource. And, based on the determination of the first device not to perform the SL transmission on the first SL resource, the processor 102 of the first device 100 transmits the NACK information on the first UL resource to the first
- the transceiver 106 can be controlled to transmit to the base station.
- 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 information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource from a first base station; Determine whether to perform SL transmission on the first SL resource; And NACK information on the first UL resource may be transmitted to the first base station based on the first device determining not to perform the SL transmission on the first SL resource.
- SL sidelink
- uplink uplink
- an apparatus configured to control a first terminal performing wireless communication may be provided.
- 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 information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource from a first base station; Determine whether to perform SL transmission on the first SL resource; And NACK information may be transmitted to the first base station on the first UL resource based on the first terminal determining not to perform the SL transmission on the first SL resource.
- SL sidelink
- uplink uplink
- 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: transmit information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource to a first base station.
- SL sidelink
- uplink uplink
- FIG. 32 illustrates a method for a base station to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 32 may be combined with various embodiments of the present disclosure.
- the base station may transmit information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource to the first device.
- the base station may receive NACK information from the first device on the first UL resource on the basis that the first device does not perform SL transmission on the first SL resource.
- the processor 202 of the base station 200 may control the transceiver 206 to transmit information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource to the first device. Further, the processor 202 of the base station 200 is a transceiver to receive NACK information from the first device on the first UL resource, based on the fact that the first device does not perform SL transmission on the first SL resource. You can control 206.
- SL sidelink
- uplink uplink
- a base station for performing wireless communication may be provided.
- the base station may include one or more memories 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 first sidelink (SL) resource and information related to a first UL (uplink) resource to a first device; And NACK information on the first UL resource may be received from the first device based on the fact that the first device does not perform SL transmission on the first SL resource.
- SL sidelink
- uplink uplink
- an apparatus configured to control a base station performing wireless communication may be provided.
- 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 transmit information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource to a first terminal; And NACK information on the first UL resource may be received from the first terminal based on the fact that the first terminal does not perform SL transmission on the first SL resource.
- SL sidelink
- uplink uplink
- 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: transmit information related to a first sidelink (SL) resource and information related to a first UL (uplink) resource to a first device.
- SL sidelink
- uplink uplink
- NACK information on the first UL resource may be received from the first device based on the fact that the first device does not perform SL transmission on the first SL resource.
- FIG. 33 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 33 may be combined with various embodiments of the present disclosure.
- the first device may receive information related to a sidelink (SL) bandwidth part (BWP) from a first base station.
- the first device may receive information related to an uplink (UL) BWP from the first base station.
- the first device may receive information related to the first SL resource and information related to the first UL resource for reporting hybrid automatic repeat request (HARQ) feedback from the first base station.
- the first device may determine not to perform SL transmission based on the first SL resource on the SL BWP.
- step S3350 based on the determination that the first device does not perform the SL transmission based on the first SL resource, the first device transmits the HARQ NACK based on the first UL resource on the UL BWP. It can be transmitted to the first base station.
- the first SL resource and the second SL resource may overlap in a time domain
- the first SL resource may be a resource related to NR-based SL transmission
- the second SL resource may be E-UTRA It may be a resource related to SL communication based on (evolved universal terrestrial radio access).
- the first device does not perform the SL transmission based on the first SL resource. You can decide not to.
- the first device may select the second SL resource based on sensing.
- the first device may receive information related to the second SL resource from a second base station, the first base station may be an NR-based base station, and the second base station may be an E- It may be a UTRA-based base station.
- the first device may determine not to perform the SL transmission based on the first SL resource.
- the first SL resource and the plurality of second UL resources may overlap in a time domain, and at least one of a plurality of priorities related to a plurality of UL transmissions on the plurality of second UL resources is the first
- the first device may determine not to perform the SL transmission based on the first SL resource.
- the first SL resource may be one or more SL resources allocated by a dynamic grant, the SL transmission may not be performed based on the one or more SL resources, and the first UL
- the resource may be a UL resource related to the one or more SL resources.
- the first SL resource may be one or more SL resources within one transmission period allocated by a configured grant, and the SL transmission is based on the one or more SL resources within the one transmission period. May not be performed, and the first UL resource may be a UL resource related to the one or more SL resources within the one transmission period.
- the first device may determine whether to perform the SL transmission based on the first SL resource.
- the information related to the first SL resource and the information related to the first UL resource may be received from the first base station through a downlink control information (DCI) or a radio resource control (RRC) message.
- DCI downlink control information
- RRC radio resource control
- the first device in response to the HARQ NACK, is a DCI including information related to a third SL resource and information related to a third UL resource through a physical downlink control channel (PDCCH) ( downlink control information) may be received from the first base station.
- the first device may transmit a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to the second device based on the third SL resource.
- the first device may receive a hybrid automatic repeat request (HARQ) feedback from the second device based on a physical sidelink feedback channel (PSFCH) resource related to the PSSCH.
- HARQ hybrid automatic repeat request
- the first device may transmit the HARQ feedback to the first base station based on the third UL resource.
- the SL transmission may include at least one of PSCCH (physical sidelink control channel) transmission or PSSCH (physical sidelink shared channel) transmission
- the first UL resource is a PUCCH (physical uplink control channel) resource or It may include at least any one of physical uplink shared channel (PUSCH) resources.
- PSCCH physical sidelink control channel
- PSSCH physical sidelink shared channel
- the first device may generate the HARQ NACK based on determining that the first device does not perform the SL transmission based on the first SL resource.
- the processor 102 of the first device 100 may control the transceiver 106 to receive information related to a sidelink (SL) bandwidth part (BWP) from the first base station.
- the processor 102 of the first device 100 may control the transceiver 106 to receive information related to an uplink (UL) BWP from the first base station.
- the processor 102 of the first device 100 transmits and receives information related to the first SL resource and the information related to the first UL resource for reporting hybrid automatic repeat request (HARQ) feedback from the first base station. (106) can be controlled.
- the processor 102 of the first device 100 may determine not to perform SL transmission based on the first SL resource on the SL BWP.
- the processor 102 of the first device 100 is the first UL resource on the UL BWP. Based on the HARQ NACK can be controlled to transmit the transceiver 106 to the first base station.
- 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 information related to a sidelink (SL) bandwidth part (BWP) from a first base station; Receive information related to UL (uplink) BWP from the first base station; Receiving information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback from the first base station; Determining not to perform SL transmission based on the first SL resource on the SL BWP; And HARQ NACK can be transmitted to the first base station based on the first UL resource on the UL BWP based on the first device determining not to perform the SL transmission based on the first SL resource.
- SL sidelink
- UL uplink
- HARQ NACK can be transmitted to the first base station based on the first UL resource on the UL BWP based on the first device determining not to perform the SL transmission based on the first SL resource.
- an apparatus configured to control a first terminal performing wireless communication.
- 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 information related to a sidelink (SL) bandwidth part (BWP) from a first base station; Receive information related to UL (uplink) BWP from the first base station; Receiving information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback from the first base station; Determining not to perform SL transmission based on the first SL resource on the SL BWP; And HARQ NACK can be transmitted to the first base station based on the first UL resource on the UL BWP based on the first terminal determining not to perform the SL transmission based on the first SL resource.
- SL sidelink
- UL uplink
- 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: receive information related to a sidelink (SL) bandwidth part (BWP) from a first base station; Receive information related to UL (uplink) BWP from the first base station; Receive information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback from the first base station; Determine not to perform SL transmission based on the first SL resource on the SL BWP; And transmitting HARQ NACK to the first base station based on the first UL resource on the UL BWP based on the first device determining not to perform the SL transmission based on the first SL resource.
- SL sidelink
- UL uplink
- HARQ hybrid automatic repeat request
- FIG. 34 illustrates a method for a base station to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 34 may be combined with various embodiments of the present disclosure.
- the base station may transmit information related to a sidelink (SL) bandwidth part (BWP) to the first device.
- the base station may transmit information related to an uplink (UL) BWP to the first device.
- the base station may transmit information related to the first SL resource and information related to the first UL resource for reporting hybrid automatic repeat request (HARQ) feedback to the first device.
- HARQ hybrid automatic repeat request
- step S3440 based on the fact that the first device does not perform SL transmission based on the first SL resource on the SL BWP, the base station performs the HARQ NACK based on the first UL resource on the UL BWP. 1 Can receive from device.
- the processor 202 of the base station 200 may control the transceiver 206 to transmit information related to a sidelink (SL) bandwidth part (BWP) to the first device. Further, the processor 202 of the base station 200 may control the transceiver 206 to transmit information related to an uplink (UL) BWP to the first device. Further, the processor 202 of the base station 200 transmits the information related to the first SL resource and the information related to the first UL resource for reporting hybrid automatic repeat request (HARQ) feedback to the first device. ) Can be controlled.
- SL sidelink
- BWP bandwidth part
- UL uplink
- HARQ hybrid automatic repeat request
- the processor 202 of the base station 200 is based on the fact that the first device does not perform SL transmission based on the first SL resource on the SL BWP, based on the first UL resource on the UL BWP As a result, the transceiver 206 may be controlled to receive HARQ NACK from the first device.
- a base station for performing wireless communication may be provided.
- the base station may include one or more memories 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 sidelink (SL) bandwidth part (BWP) to a first device; Transmits information related to UL (uplink) BWP to the first device; Transmitting information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback to the first device; And receiving a HARQ NACK from the first device based on the first UL resource on the UL BWP based on that the first device does not perform SL transmission based on the first SL resource on the SL BWP.
- SL sidelink
- BWP bandwidth part
- HARQ hybrid automatic repeat request
- an apparatus configured to control a base station performing wireless communication may be provided.
- 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 transmit information related to a sidelink (SL) bandwidth part (BWP) to a first terminal; Transmitting information related to UL (uplink) BWP to the first terminal; Transmitting information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback to the first terminal; And receiving a HARQ NACK from the first terminal based on the first UL resource on the UL BWP based on that the first terminal does not perform SL transmission based on the first SL resource on the SL BWP.
- SL sidelink
- BWP bandwidth part
- HARQ hybrid automatic repeat request
- 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: transmit information related to a sidelink (SL) bandwidth part (BWP) to a first device; Transmit information related to UL (uplink) BWP to the first device; Transmit information related to a first SL resource and information related to a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback to the first device; And receiving a HARQ NACK from the first device based on the first UL resource on the UL BWP based on that the first device does not perform SL transmission based on the first SL resource on the SL BWP. can do.
- SL sidelink
- UL uplink
- HARQ hybrid automatic repeat request
- 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,SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 기지국으로부터 수신하는 단계;UL(uplink) BWP와 관련된 정보를 상기 제 1 기지국으로부터 수신하는 단계;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 기지국으로부터 수신하는 단계;상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않도록 결정하는 단계; 및상기 제 1 장치가 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는 것을 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 기지국에게 전송하는 단계;를 포함하는, 방법.
- 제 1 항에 있어서,상기 제 1 SL 자원 및 제 2 SL 자원은 시간 영역에서 중첩되고,상기 제 1 SL 자원은 NR 기반의 SL 전송과 관련된 자원이고,상기 제 2 SL 자원은 E-UTRA(evolved universal terrestrial radio access) 기반의 SL 통신과 관련된 자원이고, 및상기 E-UTRA 기반의 SL 통신과 관련된 우선 순위가 상기 NR 기반의 SL 전송과 관련된 우선 순위보다 높은 것을 기반으로, 상기 제 1 장치는 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는, 방법.
- 제 2 항에 있어서,센싱을 기반으로 상기 제 2 SL 자원을 선택하는 단계;를 더 포함하는, 방법.
- 제 2 항에 있어서,상기 제 2 SL 자원과 관련된 정보를 제 2 기지국으로부터 수신하는 단계;를 더 포함하되,상기 제 1 기지국은 NR 기반의 기지국이고, 및상기 제 2 기지국은 E-UTRA 기반의 기지국인, 방법.
- 제 1 항에 있어서,상기 제 1 SL 자원 및 제 2 UL 자원이 시간 영역에서 중첩되는 것을 기반으로, 상기 제 1 장치는 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는, 방법.
- 제 1 항에 있어서,상기 제 1 SL 자원 및 복수의 제 2 UL 자원은 시간 영역에서 중첩되고, 및상기 복수의 제 2 UL 자원 상의 복수의 UL 전송과 관련된 복수의 우선 순위 중 적어도 어느 하나가 상기 제 1 SL 자원 상의 상기 SL 전송과 관련된 우선 순위보다 높은 것을 기반으로, 상기 제 1 장치는 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는, 방법.
- 제 1 항에 있어서,상기 제 1 SL 자원은 동적 그랜트(dynamic grant)에 의해 할당되는 하나 이상의 SL 자원이고,상기 SL 전송은 상기 하나 이상의 SL 자원을 기반으로 수행되지 않고, 및상기 제 1 UL 자원은 상기 하나 이상의 SL 자원과 관련된 UL 자원인, 방법.
- 제 1 항에 있어서,상기 제 1 SL 자원은 설정된 그랜트(configured grant)에 의해 할당되는 하나의 전송 주기 내의 하나 이상의 SL 자원이고,상기 SL 전송은 상기 하나의 전송 주기 내의 상기 하나 이상의 SL 자원을 기반으로 수행되지 않고, 및상기 제 1 UL 자원은 상기 하나의 전송 주기 내의 상기 하나 이상의 SL 자원과 관련된 UL 자원인, 방법.
- 제 1 항에 있어서,상기 제 1 SL 자원 상의 상기 SL 전송과 관련된 우선 순위를 기반으로, 상기 제 1 장치는 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행할지 여부를 결정하는, 방법.
- 제 1 항에 있어서,상기 제 1 SL 자원과 관련된 정보 및 상기 제 1 UL 자원과 관련된 정보는 DCI(downlink control information) 또는 RRC(radio resource control) 메시지를 통해서 상기 제 1 기지국으로부터 수신되는, 방법.
- 제 1 항에 있어서,상기 HARQ NACK에 대한 응답으로, PDCCH(physical downlink control channel)를 통해서, 제 3 SL 자원과 관련된 정보 및 제 3 UL 자원과 관련된 정보를 포함하는 DCI(downlink control information)를 상기 제 1 기지국으로부터 수신하는 단계;상기 제 3 SL 자원을 기반으로 PSCCH(physical sidelink control channel) 및 PSSCH(physical sidelink shared channel)를 제 2 장치에게 전송하는 단계;상기 PSSCH와 관련된 PSFCH(physical sidelink feedback channel) 자원을 기반으로 HARQ(hybrid automatic repeat request) 피드백을 상기 제 2 장치로부터 수신하는 단계; 및상기 제 3 UL 자원을 기반으로 상기 HARQ 피드백을 상기 제 1 기지국에게 전송하는 단계;를 포함하는, 방법.
- 제 1 항에 있어서,상기 SL 전송은 PSCCH(physical sidelink control channel) 전송 또는 PSSCH(physical sidelink shared channel) 전송 중 적어도 어느 하나를 포함하고 및,상기 제 1 UL 자원은 PUCCH(physical uplink control channel) 자원 또는 PUSCH(physical uplink shared channel) 자원 중 적어도 어느 하나를 포함하는, 방법.
- 제 1 항에 있어서,상기 제 1 장치가 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는 것을 기반으로, 상기 HARQ NACK을 생성하는 단계;를 더 포함하는, 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,SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 기지국으로부터 수신하고;UL(uplink) BWP와 관련된 정보를 상기 제 1 기지국으로부터 수신하고;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 기지국으로부터 수신하고;상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않도록 결정하고; 및상기 제 1 장치가 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는 것을 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 기지국에게 전송하는, 제 1 장치.
- 무선 통신을 수행하는 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,SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 기지국으로부터 수신하고;UL(uplink) BWP와 관련된 정보를 상기 제 1 기지국으로부터 수신하고;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 기지국으로부터 수신하고;상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않도록 결정하고; 및상기 제 1 단말이 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는 것을 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 기지국에게 전송하는, 장치.
- 명령어들을 기록하고 있는 비일시적 컴퓨터 판독가능 저장 매체로서,상기 명령어들은, 하나 이상의 프로세서들에 의해 실행될 때, 상기 하나 이상의 프로세서들로 하여금:SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 기지국으로부터 수신하게 하고;UL(uplink) BWP와 관련된 정보를 상기 제 1 기지국으로부터 수신하게 하고;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 기지국으로부터 수신하게 하고;상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않도록 결정하게 하고; 및상기 제 1 장치가 상기 제 1 SL 자원을 기반으로 상기 SL 전송을 수행하지 않도록 결정하는 것을 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 기지국에게 전송하게 하는, 비일시적 컴퓨터 판독가능 저장 매체.
- 기지국이 무선 통신을 수행하는 방법에 있어서,SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 장치에게 전송하는 단계;UL(uplink) BWP와 관련된 정보를 상기 제 1 장치에게 전송하는 단계;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 장치에게 전송하는 단계; 및상기 제 1 장치가 상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않는 것으로 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 장치로부터 수신하는 단계;를 포함하는, 방법.
- 무선 통신을 수행하는 기지국에 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,SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 장치에게 전송하고;UL(uplink) BWP와 관련된 정보를 상기 제 1 장치에게 전송하고;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 장치에게 전송하고; 및상기 제 1 장치가 상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않는 것으로 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 장치로부터 수신하는, 기지국.
- 무선 통신을 수행하는 기지국을 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,SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 단말에게 전송하고;UL(uplink) BWP와 관련된 정보를 상기 제 1 단말에게 전송하고;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 단말에게 전송하고; 및상기 제 1 단말이 상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않는 것으로 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 단말로부터 수신하는, 장치.
- 명령어들을 기록하고 있는 비일시적 컴퓨터 판독가능 저장 매체로서,상기 명령어들은, 하나 이상의 프로세서들에 의해 실행될 때, 상기 하나 이상의 프로세서들로 하여금:SL(sidelink) BWP(bandwidth part)와 관련된 정보를 제 1 장치에게 전송하게 하고;UL(uplink) BWP와 관련된 정보를 상기 제 1 장치에게 전송하게 하고;제 1 SL 자원과 관련된 정보 및 HARQ(hybrid automatic repeat request) 피드백을 보고하기 위한 제 1 UL 자원과 관련된 정보를 상기 제 1 장치에게 전송하게 하고; 및상기 제 1 장치가 상기 SL BWP 상의 상기 제 1 SL 자원을 기반으로 SL 전송을 수행하지 않는 것으로 기반으로, 상기 UL BWP 상의 상기 제 1 UL 자원을 기반으로 HARQ NACK을 상기 제 1 장치로부터 수신하게 하는, 비일시적 컴퓨터 판독가능 저장 매체.
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CN202080071939.0A CN114557094B (zh) | 2019-08-16 | 2020-08-18 | 在nr v2x中基于bwp向基站发送与副链路关联的信息的方法和设备 |
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US17/635,950 US11895691B2 (en) | 2019-08-16 | 2020-08-18 | Method and apparatus for transmitting, to base station, information associated with sidelink on basis of BWP in NR V2X |
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CN112584549B (zh) * | 2019-09-29 | 2023-03-10 | 华为技术有限公司 | 一种确定物理直连反馈信道资源的方法及装置 |
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