Abstract

The present disclosure may provide a method of performing, by a terminal, a Hybrid Automatic Repeat and Request (HARQ) feedback procedure in a new radio (NR) vehicle-to-everything (V2X) system. Here, the method of performing, by the terminal, the HARQ feedback procedure in the NR V2X system may include receiving sidelink (SL) data from a transmitting (Tx) terminal, determining a PSFCH resource including feedback information about the received sidelink data, and transmitting a PSFCH to the Tx terminal through the determined PSFCH resource.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Abstract

In a wireless communication system, a method of supporting sidelink (SL) communication by a UE may be provided. In this case, the method of supporting SL communication by the UE may comprise setting an SL DRX configuration through a higher layer, setting an SL DRX-related cycle and an SL DRX-related timer based on the set SL DRX configuration, receiving sidelink control information (SCI) and setting an SCI-based SL DRX-related cycle and an SCI-based SL DRX-related timer based on time resource allocation information of the received SCI.

IPC Classes  ?

• H04W 76/28 - Discontinuous transmission [DTX]Discontinuous reception [DRX]
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04L 1/1829 - Arrangements specially adapted for the receiver end
• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Abstract

A device of an A-IoT system in a wireless communication system comprises: at least one processor; and a memory storing instructions causing a wireless user device to perform a specific operation via the at least one processor, wherein, in the specific operation: the device receives a first message from a reader via an R2D link; and the device transmits a second message via a D2R link, in response to the first message, wherein the same information bit may be repeatedly included in the second message on the basis of a repetition transmission level.

IPC Classes  ?

• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• H04W 74/00 - Wireless channel access
• H04L 1/08 - Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA
• H04W 68/02 - Arrangements for increasing efficiency of notification or paging channel

Abstract

Provided is a wireless user device that is connected to a satellite on the basis of an NTN in a wireless communication system, wherein NTN DMRS bundling-related setting information and DMRS bundling enabling instruction information may be acquired via upper later signaling pre-compensation procedure application time information may be transmitted to a base station on the basis of the upper layer signaling and PUSCH with DMRS may be transmitted to the base station via DMRS bundling on the basis of the pre-compensation procedure application time information.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

Disclosed is a random access method and apparatus for a reduced capability user equipment in a wireless communication system. A method of performing random access by a UE in a wireless communication system according to an embodiment of the disclosure may include an operation of receiving random access-related configuration information from a base station; an operation of determining at least one of a RACH occasion (RO) group related to random access preamble transmission, one or more ROs, and a random access preamble group based on at least one of the random access-related configuration information, a UE type, and a repetition level; and an operation of transmitting one or more random access preambles in each of the one or more ROs.

IPC Classes  ?

• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 74/00 - Wireless channel access
• H04W 74/0836 - Random access procedures, e.g. with 4-step access with 2-step access

Abstract

The present disclosure may provide a method of transmitting, by a user equipment (UE), small data in a wireless communication system. Here, a small data transmission method may include enabling a small data configuration in a UE; triggering, by the UE, a small data transmission; transmitting, by the UE, a common control channel (CCCH) and buffered data information to a base station in a random access channel (RACH) procedure; receiving a random access response (RAR) including an uplink (UL) grant from the base station based on the buffered data information; and transmitting the small data based on the UL grant.

IPC Classes  ?

• H04W 76/27 - Transitions between radio resource control [RRC] states
• H04W 72/1268 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 74/0836 - Random access procedures, e.g. with 4-step access with 2-step access
• H04W 74/0838 - Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]

Abstract

This method for a wireless user device may comprise the steps of: acquiring positioning-related parameters through higher layer signaling; determining a start point and a time granularity on the basis of the positioning-related parameters; determining a measurement report window comprising a plurality of samples on the basis of the start point and the time granularity; and performing measurement by selecting a measurement sample in the measurement report window.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 24/08 - Testing using real traffic
• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• G06N 20/00 - Machine learning

Abstract

A method according to an embodiment of the present disclosure may comprise the steps of: a wireless user equipment acquiring positioning-related parameters via higher layer signaling, wherein the positioning-related parameters include a first offset and a second offset; determining a starting point and a time granularity on the basis of the positioning-related parameters, wherein the starting point is determined on the basis of a reference signal and the first offset; determining, on the basis of the starting point and the time granularity, a measurement report window including a plurality of samples; and selecting, on the basis of the second offset, a measurement sample within the measurement report window to carry out measurement.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 24/08 - Testing using real traffic
• H04W 24/10 - Scheduling measurement reports
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• G06N 20/00 - Machine learning

Abstract

Provided may be a method of supporting, by a user equipment (UE), sidelink communication in a wireless communication system. The method. of supporting, by the UE, sidelink communication in the wireless communication system may include receiving a coordination request from a transmitting UE (Tx UE); generating a coordination message based on the coordination request; and transmitting the generating coordination message to the Tx UE. Here, the coordination request may include 1-bit information and the coordination request may be received based on at least one of a physical resource set of Physical Sidelink Feedback Channel (PSFCH), a Sidelink Control Information (SCI) format, Cyclic Redundancy Checking (CRC) scrambling, and a Demodulation Reference Signal (DMRS) sequence, and the Tx UE may perform resource reselection based on the coordination message.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Abstract

In an operation of this wireless user device, the wireless user device can acquire LTM configuration information from a source cell on the basis of LTM. Then, the wireless user device can perform uplink/downlink pre-synchronization with one or more candidate cells. Afterward, the wireless user device can perform a first LTM attempt and, if the first LTM attempt fails, the wireless user device can perform a second LTM attempt.

IPC Classes  ?

• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/36 - Reselection control by user or terminal equipment
• H04W 36/08 - Reselecting an access point

Abstract

An operation of a wireless user device comprises acquiring LTM configuration information from a source cell on the basis of conditional LTM, wherein: the LTM configuration information comprises information about one or more candidate cells and event condition information for performing LTM; the wireless user device performs uplink/downlink pre-synchronization with the one or more candidate cells; and the wireless user device performs measurement by acquiring a reference signal from the one or more candidate cells, checks whether an event condition is satisfied on the basis of a result of the measurement, and completes an LTM procedure by transmitting an RRC reconfiguration message to a target cell satisfying the event condition, from among the one or more candidate cells, wherein the wireless user device may complete the LTM procedure by transmitting the RRC reconfiguration message to the target cell via a TAC for each of the one or more candidate cells acquired from the source cell.

IPC Classes  ?

• H04W 36/36 - Reselection control by user or terminal equipment
• H04W 36/00 - Handoff or reselecting arrangements
• H04W 56/00 - Synchronisation arrangements
• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04W 36/08 - Reselecting an access point

Abstract

This method may include the steps of: receiving, by a wireless user equipment, a reference signal from a base station in a wireless communication system; performing measurement for at least one of training and inference on the basis of the reference signal; and transmitting, to the base station, prediction beam information derived through an AI/ML model on the basis of the measurement, wherein the AI/ML model may be located in the wireless user equipment.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• G06N 5/04 - Inference or reasoning models
• H04B 17/373 - Predicting channel quality parameters
• H04B 17/318 - Received signal strength

Abstract

A method for wireless communication between a plurality of devices includes determining the number of PUSCH repetition transmissions, determining a PUSCH transmission resource, based on random access-related configuration information and the number of PUSCH repetition transmissions, and performing the PUSCH repetition transmission based on the PUSCH transmission resource.

IPC Classes  ?

• H04W 74/00 - Wireless channel access
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 74/0836 - Random access procedures, e.g. with 4-step access with 2-step access

Abstract

The present disclosure relates to a method and apparats for discontinuous reception (DRX) for a link between a network and a user equipment (UE) based on device-to-device (D2D) communication in a wireless communication system. A method for DRX of a first UE in a wireless communication system may include receiving, from a second UE, hybrid automatic repeat request (HARQ) feedback information related to sidelink data transmitted from the first UE; transmitting, by the first UE, HARQ NACK information to a base station in an uplink based on the HARQ feedback information from the second UE; sleeping during an operation of the first timer that starts after the first UE transmits the HARQ NACK information; and monitoring a downlink control channel that includes resource allocation information on a sidelink data retransmission during an operation of a second timer that starts after the first timer expires.

IPC Classes  ?

• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 76/28 - Discontinuous transmission [DTX]Discontinuous reception [DRX]
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

An operation method performed by a reader in an A-IoT system in a wireless communication system may comprise the steps in which: the reader receives first DCI configured in a first DCI format, wherein the first DCI includes A-IoT transmission timing indication information; and the reader transmits an A-IoT signal to an A-IoT device through an R2D link on the basis of the A-IoT transmission timing indication information.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 72/40 - Resource management for direct mode communication, e.g. D2D or sidelink
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A method for detecting a bonding process defect and performing rework on the basis of artificial intelligence may comprise the steps of: collecting measurement/image data; generating defect detection data from the measurement/image data by using a trained artificial intelligence model; determining whether to perform rework, on the basis of the measurement/image data and the defect detection data; and updating the artificial intelligence model on the basis of the measurement/image data and the defect detection data.

IPC Classes  ?

• B23K 31/12 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to investigating the properties, e.g. the weldability, of materials
• G06N 3/08 - Learning methods
• G06T 7/00 - Image analysis

Abstract

An operation of a wireless device may comprise: acquiring, from a network, an L1/L2 layer triggered mobility (LTM) configuration including information on LTM candidate cells; acquiring a reference signal from each of the LTM candidate cells and performing a measurement report; acquiring, on the basis of the measurement report, a cell switch command medium access control control element (MAC CE) indicating cell switching to a first cell among the LTM candidate cells; and performing serving cell switching to the first cell by recognizing an intra central unit (CU) LTM operation and an inter CU LTM operation.

IPC Classes  ?

• H04W 36/08 - Reselecting an access point
• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/10 - Reselecting an access point controller

Abstract

The present disclosure relates to a partial sensing method and apparatus for device-to-device (D2D) communication in a wireless communication system. Disclosed is a method of selecting a resource for D2D communication based on partial sensing in a wireless communication system, the method including receiving a transmission resource reservation period and a reception resource reservation period from a base station through upper layer signaling; determining a selection window; determining a sensing window for partial sensing based on the selection window, based on the transmission resource reservation period; excluding an overlapping resource through sensing in the determined sensing window; and performing transmission by selecting a resource for transmitting control information and data in the selection window based on the excluded resource information. The reception resource reservation period received through upper layer signaling may be set to a limited value based on the transmission resource reservation period.

IPC Classes  ?

• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Abstract

The present disclosure relates to a method and device for determining a resource to be sensed for device-to-device (D2D) communication in a wireless communication system. A method of performing sensing for device-to-device (D2D) communication in a wireless communication system according to an aspect of the present disclosure may include receiving, by a first user equipment (UE), sidelink control information (SCI) in slot m; determining a first exclusion candidate based on a reception power measurement value of a data channel corresponding to the SCI; determining slot m+Gap in which the same data as in the slot m is transmitted; determining a second exclusion candidate based on the slot m+Gap; excluding a resource in which the first and second exclusion candidates and a candidate to be sensed overlap from a resource to be sensed; and performing sensing on the resource to be sensed.

IPC Classes  ?

• H04W 76/14 - Direct-mode setup
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 28/02 - Traffic management, e.g. flow control or congestion control
• H04W 48/16 - DiscoveringProcessing access restriction or access information
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Abstract

Provided is a method of performing, by a user equipment (UE), wireless communication in a wireless communication system, the method including generating a first message and transmitting the generated first message. Here, a transmission format for transmitting the first message may be determined depending on whether transmission profile (Tx profile) information is transmitted from an upper layer of the UE.

IPC Classes  ?

• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 80/02 - Data link layer protocols
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

Sidelink downlink control information may include a first indicator field that indicates a sidelink hybrid automatic repeat request (HARQ) feedback timing. A bitwidth of the first indicator field may be based on at least one of one or more parameters from the base station. The first wireless user device may transmit, based on the SL DCI and to a second wireless user device, a first sidelink signal. The first wireless user device may receive, during a first time interval and from the second wireless user device, first sidelink HARQ feedback information responsive to the first sidelink signal. The first wireless user device may determine, based on the sidelink HARQ feedback timing and based on the first time interval, a second time interval. The first wireless user device may transmit, during the second time interval and to the base station, the first sidelink HARQ feedback information.

IPC Classes  ?

• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 72/21 - Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Abstract

The present disclosure can provide a method in which a terminal performs transmission in a wireless communication system. The method for performing transmission can comprise the steps in which: a terminal receives a plurality of pre-configured resources; the device confirms as to whether the plurality of pre-configured resources collide; the terminal selects any one pre-configured resource among a plurality of collided pre-configured resources; and transmission for the selected preconfigured resource is performed.

IPC Classes  ?

• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

Sidelink downlink control information (SL DCI) associated with transmission of one or more sidelink signals may be communicated. A wireless user device may transmit, based on the SL DCI and to one or more second wireless user devices, the one or more sidelink signals via a first quantity of sidelink channel resources. The wireless user device may receive first sidelink HARQ feedback information responsive to the one or more sidelink signals. The wireless user device may determine, based on a sidelink HARQ feedback timing, a time interval to transmit the first sidelink HARQ feedback information. The wireless user device may determine, based on the first quantity, a sidelink HARQ codebook. The wireless user device may transmit, during the time interval, based on the sidelink HARQ codebook, and to the base station, an uplink signal indicating the first sidelink HARQ feedback information.

IPC Classes  ?

• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04B 7/0456 - Selection of precoding matrices or codebooks, e.g. using matrices for antenna weighting
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 76/27 - Transitions between radio resource control [RRC] states
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A first wireless UE that operates in a sidelink unlicensed band in a wireless communication system include at least one antenna configured to transmit and receive one or more wireless signals; at least one processor; and a memory configured to store instructions for the first wireless UE when executed by the at least one processor, and the first wireless UE may be configured to transmit SL data to a second wireless UE through a physical sidelink shared channel (PSSCH), to receive SL hybrid automatic repeat request (HARQ)-ACK information on the PSSCH based on a physical sidelink feedback channel (PSFCH) reception occasion (ROC) associated with the PSSCH, and to generate SL HARQ feedback information based on the SL HARQ-ACK information and report the same to a base station, and based on the unlicensed band, the PSSCH may be associated with a PSFCH ROC set that includes a plurality of PSFCH ROCs.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/0446 - Resources in time domain, e.g. slots or frames

Abstract

A wireless user equipment (UE) that performs a listen before talk (LBT) operation in a sidelink unlicensed band in a wireless communication system may be configured to select a resource pool and a resource for sidelink communication based on a resource pool and resource selection procedure, to perform an LBT procedure using the resource pool and the resource selected based on the sidelink unlicensed band, to verify a consistent LBT failure trigger status based on the LBT procedure, and to select the resource for the sidelink communication based on a transmission resource selection procedure when the consistent LBT failure is triggered.

IPC Classes  ?

• H04W 74/0808 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
• H04W 16/14 - Spectrum sharing arrangements
• H04W 74/00 - Wireless channel access
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A wireless UE that operates in a sidelink unlicensed band in a wireless communication system may include at least one antenna configured to transmit and receive one or more wireless signals, at least one processor, and a memory configured to store instructions for the wireless UE when executed by the at least one processor, and the operation of the wireless UE may include determining the number of OFDM symbols available for PSSCH transmission; determining the number of coded symbols of 2nd SCI based on the number of OFDM symbols available for PSSCH transmission; determining the number of resource elements of 2nd SCI based on the number of coded symbols of 2nd SCI; and mapping the 2nd SCI to radio resources based on a parameter related to a starting OFDM symbol location and a parameter related to the number of OFDM symbols and transmitting the same to another wireless UE.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A wireless user equipment (UE) in a wireless communication system may be configured with at least one hybrid automatic repeat and request (HARQ) feedback transmission opportunity, may transmit HARQ feedback based on the configured at least one HARQ feedback transmission opportunity, may operate a sidelink discontinuous reception (DRX) HARQ round trip time (RTT) timer based on the HARQ feedback transmission, and may receive a retransmission grant if the sidelink DRX HARQ RTT timer expires.

IPC Classes  ?

• H04L 1/1867 - Arrangements specially adapted for the transmitter end
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 74/0808 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
• H04W 76/28 - Discontinuous transmission [DTX]Discontinuous reception [DRX]
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A method of performing, by a user equipment (UE), sidelink communication based on an unlicensed band in a wireless communication system may include receiving, by the UE, sidelink resource pool configuration information from a base station based on higher layer signaling, generating a sidelink (SL) grant if data is generated in a logical channel (LCH) based on the sidelink resource pool configuration information, selecting a sidelink resource pool depending on whether hybrid automatic repeat and request (HARQ) feedback is configured to the data that is generated in the LCH based on the sidelink resource pool configuration information, and selecting a sidelink resource from the selected sidelink resource pool, and performing sidelink transmission.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 74/0808 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]

Abstract

A method and apparatus for supporting a device-to-device (D2D) communication between user equipments (UEs) are provided. The method of a device-to-device (D2D) communication between user equipments (UEs), the method includes: receiving, at a transmission (Tx) UE, resource assignment information transmitted from an evolved NodeB (eNB), the resource assignment information being associated with a D2D discovery signal to be transmitted in a discovery period; determining, at the Tx UE, that a D2D discovery signal associated with a first discovery type and a D2D discovery signal associated with a second discovery type are to be transmitted in a first subframe included in the discovery period; and in the first subframe, transmitting the D2D discovery signal associated with the second discovery type and dropping the D2D discovery signal associated with the first discovery type.

IPC Classes  ?

• H04W 72/56 - Allocation or scheduling criteria for wireless resources based on priority criteria
• H04W 8/00 - Network data management
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 76/14 - Direct-mode setup

Abstract

A method of performing sidelink positioning in a wireless communication system according to an aspect of the present disclosure may include acquiring sidelink resource pool configuration information, acquiring sidelink positioning reference signal (SL PRS) configuration information, and transmitting an SL PRS based on SL PRS allocation.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A wireless communication system may include: as a step in which a wireless user device in NTN coverage receives a handover command from a source base station, a step in which one or more wireless user devices in the NTN coverage receive the handover command and check whether a handover condition is satisfied on the basis of the handover command; and a step of performing random access to a target base station in a RACH resource allocated on the basis of a wireless user device identifier, when the handover condition is satisfied.

IPC Classes  ?

• H04W 36/08 - Reselecting an access point
• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
• H04W 36/18 - Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
• H04W 36/36 - Reselection control by user or terminal equipment
• H04W 84/06 - Airborne or Satellite Networks

Abstract

Provided is a method and apparatus for performing a random access procedure. A wireless device may transmit a random access preamble and may monitor for a random access response. The wireless device may determine to transmit a second random access preamble or to transmit uplink data responsive to the random access response. A time for preparing the second random access preamble may be determined based on a subcarrier spacing associated with the random access preamble or a subcarrier spacing associated a downlink channel associated with the random access response. A time for preparing the uplink data may be determined based on a subcarrier spacing associated with the uplink data or a subcarrier spacing associated a downlink channel associated with the random access response.

IPC Classes  ?

• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 74/00 - Wireless channel access

Abstract

A method of performing sidelink communication in an unlicensed band may include determining entire resource elements (REs) for a physical sidelink shared channel (PSSCH); and determining a transport block size (TBS) based on the entire REs.

IPC Classes  ?

• H04W 72/40 - Resource management for direct mode communication, e.g. D2D or sidelink
• H04W 16/14 - Spectrum sharing arrangements
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA

Abstract

The method may comprise: a step in which a wireless user device receives an entire beam from a base station on the basis of beam sweeping in a wireless communication system, obtains a data set on the basis of the entire beam, and transmits the data set to the base station; a step in which the wireless user device receives at least one wide beam from the base station on the basis of approximate wide beam sweeping within an observation window and reports a measurement value for the at least one side beam to the base station; a step in which the wireless user device receives at least one narrow beam in a prediction window, determines an optimal narrow beam, and transmits information on the optimal narrow beam to the base station; and a step of receiving data transmitted on the basis of the optimal narrow beam.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
• H04W 24/08 - Testing using real traffic
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/044 - Wireless resource allocation based on the type of the allocated resource
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• G06N 20/00 - Machine learning

Abstract

This method of a wireless communication system may include the steps of: performing, by a wireless user device, training and testing on an AI/ML model for CSI prediction, and reporting training and test information to a base station; receiving, from the base station, an inference triggering of the AI/ML model for CSI prediction, and generating predicted CSI by performing inference of the AI/ML model on the basis of same; receiving, from the base station, a monitoring indication for the AI/ML model for CSI prediction; and reporting, to the base station, fallback-related information on the basis of the monitoring indication for the AI/ML model.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 17/373 - Predicting channel quality parameters
• G06N 20/00 - Machine learning

Abstract

This method may comprise steps in which a wireless user device in a wireless communication system: receives, from a base station, at least one wide beam on the basis of approximate wide beam sweeping; receives at least one narrow beam determined on the basis of the measurement of the at least one wide beam, and determines an optimum narrow beam so as to transmit, to the base station, information about the optimum narrow beam; and receives data transmitted on the basis of the optimum narrow beam.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
• H04W 24/08 - Testing using real traffic
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/044 - Wireless resource allocation based on the type of the allocated resource
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04B 17/318 - Received signal strength
• G06N 3/04 - Architecture, e.g. interconnection topology

Abstract

A method of configuring a sidelink resource pool in a user equipment (UE) in a wireless communication system may include receiving, by the UE, resource pool configuration information from a base station based on higher layer signaling; transmitting sidelink control information (SCI) to another UE based on the resource pool configuration information; and performing sidelink communication with the other UE, and the resource pool configuration information may be information that is based on sidelink resource pool configuration of an unlicensed band.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 72/40 - Resource management for direct mode communication, e.g. D2D or sidelink

Abstract

A method of updating, by a user equipment (UE), a reference location based on non-terrestrial networks (NTN) in a wireless communication system may include acquiring reference location related information from a base station; as an operation of determining whether a distance between the UE and a reference location is less than a distance threshold based on the reference location related information, not performing measurement for cell reselection if the distance between the UE and the reference location, and performing the measurement for the cell reselection if the distance between the UE and the reference location is greater than the distance threshold; and performing reference location update based on a reference location related timer if the distance between the UE and the reference location is less than the distance threshold.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 84/00 - Network topologies

Abstract

A method of configuring a sidelink resource pool to a user equipment (UE) in a wireless communication system may include receiving, by the UE, resource pool configuration information based on higher layer signaling from a base station; transmitting sidelink control information to another UE based on resource pool configuration information; and performing sidelink communication with the other UE, and resource pool configuration information may be information based on sidelink resource pool configuration of an unlicensed band.

IPC Classes  ?

• H04W 72/40 - Resource management for direct mode communication, e.g. D2D or sidelink
• H04W 16/14 - Spectrum sharing arrangements
• H04W 72/54 - Allocation or scheduling criteria for wireless resources based on quality criteria
• H04W 74/0808 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]

Abstract

A method of a wireless communication system may comprise the steps of: determining, by a terminal, whether to apply a CQI correction value on the basis of higher layer signaling provided from a base station, wherein each of the terminal and the base station has an AI/ML model, and the AI/ML model provided in the terminal corresponds to a CSI generation part and the AI/ML model provided in the base station corresponds to a CSI reconfiguration part; receiving a channel state information-reference signal (CSI-RS) from the base station; and transmitting, to the base station, an AI/ML-based CSI report including CSI output information on the basis of the CSI generation part and a CQI determined on the basis of the CSI-RS.

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• G06N 20/00 - Machine learning

Abstract

Provided is a method and apparatus for receiving a reference signal. A wireless user device may determine, based on a synchronization signal (SS) block index and based on an index associated with a time interval, an initialization value associated with a reference signal for a physical broadcast channel (PBCH). The wireless user device may receive, based on the initialization value and based on a frequency domain shift value, the reference signal via at least one resource element (RE). The reference signal may be mapped, based on the frequency domain shift value, to the at least one RE. The wireless user device may receive the PBCH.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 27/26 - Systems using multi-frequency codes
• H04W 72/12 - Wireless traffic scheduling
• H04W 72/30 - Resource management for broadcast services
• H04W 84/04 - Large scale networksDeep hierarchical networks

Abstract

Provided is a method of performing, by a user equipment (UE), cell reselection based on non-terrestrial networks (NTN) in a wireless communication system. Here, the method of performing cell reselection may include acquiring cell reselection condition information from a base station; moving from a first cell to a second cell based on mobility of the UE and acquiring measurement related information for cell reselection from the second cell; and performing an NTN cell search when a specific condition for cell reselection is satisfied based on the cell reselection condition information.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 48/20 - Selecting an access point
• H04W 84/06 - Airborne or Satellite Networks

Abstract

Methods, apparatuses, and systems described herein generally relate to a reference signal generation and mapping. For example, a method comprises determining a first set of antenna ports for a demodulation reference signal (DM-RS) transmission; determining, based on the first set, a frequency index associated with four adjacent resource elements, wherein the four adjacent resource elements correspond to two adjacent symbols in a time axis and to two adjacent subcarriers in a frequency axis; generating, based on a first orthogonal cover code and a second orthogonal cover code, a DM-RS associated with the first set of antenna ports; and transmitting, via a mapping to the four adjacent resource elements, the DM-RS associated with the first set of antenna ports.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04B 7/0452 - Multi-user MIMO systems
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A method includes receiving, by a user equipment (UE) and through Radio Resource Control (RRC) signaling, information of a resource pool for a D2D communication, wherein the information of the resource pool comprises information of a discovery subframe in which a D2D discovery signal is to be communicated, determining that in the discovery subframe, the D2D discovery signal is prioritized over a communication with an evolved NodeB (eNB) unless the communication with the eNB is associated with a random access (RA) procedure, transmitting a RA preamble through a Physical Random Access Channel (PRACH), determining whether the discovery subframe corresponds to a RA subframe in which a RA response for the UE is to be monitored, and in response to determining that the discovery subframe corresponds to the RA subframe, monitoring, by the UE, the RA response during the discovery subframe.

IPC Classes  ?

• H04W 8/00 - Network data management
• H04W 48/12 - Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 76/14 - Direct-mode setup

Abstract

A method and apparatus for performing a sidelink Hybrid Automatic Repeat Request (HARQ) operation are provided. The method may include establishing a communication session through an upper layer signaling; receiving configuration information for a HARQ operation through the upper layer; receiving downlink control information (DCI) from a network; transmitting sidelink data through a sidelink channel based on the received DCI; and receiving a response to the sidelink data.

IPC Classes  ?

• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04L 1/1867 - Arrangements specially adapted for the transmitter end
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present disclosure provides a method for scheduling a physical sidelink resource. The method may comprise selecting, among a plurality of modes for physical sidelink resource selection, a first mode for the apparatus to assist a plurality of wireless user devices to select at least one physical sidelink resource, wherein the first mode is different from a second mode for the apparatus to automatically select at least one second physical sidelink resource and different from a third mode for the apparatus to perform sidelink transmission on a pre-configured physical sidelink resource, transmitting, to the plurality of wireless user devices, information to schedule a resource for sidelink communication of the plurality of wireless user devices, and receiving, from at least one wireless user device of the plurality of wireless user devices, SCI via a physical sidelink resource selected by the at least one wireless user device.

IPC Classes  ?

• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention may comprise the steps of: allowing a terminal to be allocated an uplink resource for artificial intelligence (AI) channel state information (CSI) reporting in a wireless communication system; determining whether to adjust an AI CSI payload size on the basis of the uplink resource; and if the AI CSI payload size is adjusted, performing AI CSI reporting through the uplink resource on the basis of the adjusted AI CSI payload size.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04W 72/21 - Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
• G06N 3/0455 - Auto-encoder networksEncoder-decoder networks

Abstract

This wireless device may include a wireless transceiver, one or more processors, and a memory for storing instructions for the wireless device, when executed by the one or more processors. Here, operations of the wireless device comprise: performing a random access procedure with a satellite IAB node on the basis of NTN IAB topology integration; performing an RRC connection establishment procedure with the satellite IAB node on the basis of the random access procedure; acquiring an NTN IAB-related parameter in the RRC connection establishment procedure; and selecting an AMF on the basis of the NTN IAB-related parameter, wherein the NTN IAB-related parameter may be configured on the basis of at least one of an NTN IAB operation indicator, a satellite orbit, and a cell type.

IPC Classes  ?

• H04W 40/24 - Connectivity information management, e.g. connectivity discovery or connectivity update
• H04W 40/12 - Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
• H04W 48/10 - Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 84/04 - Large scale networksDeep hierarchical networks
• H04W 84/06 - Airborne or Satellite Networks

Abstract

Exemplary embodiments provide a method and apparatus for transmitting data through a device-to-device (D2D) communication between user equipments (UEs), the method including: generating, at a first UE, first D2D data, the first D2D data corresponding to a transport block (TB) unit; and transmitting, from the first UE to a second UE, the first D2D data through at least one D2D communication resource, the at least one D2D communication resource being based on a sub-RPT (sub-resource pattern for transmission). An RPT defined in a D2D resource pool is configured based on the sub-RPT, and the sub-RPT indicates the at least one D2D communication resource for the transmission of the first D2D data among at least two D2D communication candidate resources.

IPC Classes  ?

• H04W 72/02 - Selection of wireless resources by user or terminal
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• H04W 8/00 - Network data management
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 76/14 - Direct-mode setup
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

One or more synchronization procedures in wireless communications are provided. A wireless user device may determine a global navigation satellite system (GNSS) as a synchronization reference source associated with a sidelink synchronization. The wireless user device may determine, based on the GNSS being the synchronization reference source associated with a sidelink synchronization and a subcarrier spacing index for sidelink, a slot number for sidelink communication. The wireless user device may transmit, based on the slot number, a sidelink synchronization signal from the wireless user device to a second wireless user device.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• G01S 19/05 - Cooperating elementsInteraction or communication between different cooperating elements or between cooperating elements and receivers providing aiding data
• H04L 27/26 - Systems using multi-frequency codes
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

This method for performing routing on the basis of an NTN environment in a wireless communication system may comprise the steps of: receiving a configuration of a routing table from an IAB donor-CU; identifying a destination node, a path, and a next hop address related to data on the basis of the routing table; and performing routing on the basis of an IAB node satellite having a configurable path.

IPC Classes  ?

• H04W 40/24 - Connectivity information management, e.g. connectivity discovery or connectivity update
• H04W 40/38 - Modification of an existing route adapting due to varying relative distances between nodes
• H04W 40/02 - Communication route or path selection, e.g. power-based or shortest path routing
• H04W 84/04 - Large scale networksDeep hierarchical networks
• H04W 84/06 - Airborne or Satellite Networks

Abstract

This method may comprise the steps of: triggering, by a terminal, a CSI report in a wireless communication system; determining, by the terminal, the CSI report on the basis of a priority; and performing the determined CSI report. Here, when the terminal triggers a first type CSI report, the terminal may identify whether a second type CSI report overlaps the first type CSI report in at least one symbol in which the first type CSI report is performed, and when the first type CSI report and the second type CSI report overlap each other, the terminal may perform the second type CSI report prior to the first type CSI report.

IPC Classes  ?

• H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04W 72/21 - Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
• G06N 20/00 - Machine learning
• H04W 24/08 - Testing using real traffic
• H04W 72/1268 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
• G06N 3/092 - Reinforcement learning

Abstract

The method by which a terminal sets a sidelink resource pool in a wireless communication system comprises steps in which the terminal: receives, from a base station, resource pool configuration information on the basis of upper layer signaling; and performs sidelink communication with another terminal on the basis of the resource pool configuration information, wherein the resource pool configuration information can be information based on a sidelink resource pool configuration of an unlicensed band.

IPC Classes  ?

• H04W 72/044 - Wireless resource allocation based on the type of the allocated resource
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA
• H04W 72/20 - Control channels or signalling for resource management
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

The present disclosure may provide a method of performing, by a terminal, a Hybrid Automatic Repeat and Request (HARQ) feedback procedure in a new radio (NR) vehicle-to-everything (V2X) system. Here, the method of performing, by the terminal, the HARQ feedback procedure in the NR V2X system may include receiving sidelink (SL) data from a transmitting (Tx) terminal, determining a PSFCH resource including feedback information about the received sidelink data, and transmitting a PSFCH to the Tx terminal through the determined PSFCH resource.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Abstract

Exemplary embodiments provide a method and apparatus for transmitting a synchronization signal for Device-to-Device (D2D) communication in a wireless communication system. With respect to a D2D synchronization source to transmit a synchronization signal for D2D communication, the method includes: generating a D2D Synchronization Signal (D2DSS); and transmitting, by a synchronization source, the D2DSS to a D2D reception (Rx) UE, wherein the D2DSS includes a Primary D2D Synchronization Signal (PD2DSS) generated based on information associated with the synchronization source.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04J 3/06 - Synchronising arrangements
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 27/26 - Systems using multi-frequency codes
• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 76/14 - Direct-mode setup

Abstract

Provided is a method and apparatus for using an offset between a synchronization signal block and a resource block grid. The method may include receiving, by a user device, a synchronization signal (SS) block comprising a synchronization signal and a physical broadcast channel (PBCH), determining, from the PBCH, a value of a subcarrier offset between the SS block and an RB grid, determining, based on the value of the subcarrier offset and a frequency location of the SS block, the RB grid, and decoding, based on the determined RB grid, one or more of a reference signal, a control channel, or a data channel.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 56/00 - Synchronisation arrangements
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA

Abstract

According to an aspect of the present disclosure, there is provided a method of transmitting feedback information from a user equipment (UE) in a new radio (NR) vehicle-to-everything (V2X) system. Here, the method of transmitting feedback information may include performing, by a first UE and a second UE, a session establishment process based on at least one of unicast and groupcast; exchanging, by the first UE and the second UE, ID information in the session establishment process; and completing, by the first UE and the second UE, the session establishment. Here, when the first UE and the second UE complete the session establishment, a physical layer ID representing a session may be determined.

IPC Classes  ?

• H04L 1/1867 - Arrangements specially adapted for the transmitter end
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/20 - Control channels or signalling for resource management
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

Disclosed is a method and apparatus for generating information indicating a synchronization signal (SS) block. A method comprises: determining a frequency resource associated with a wireless device; determining, by a base station and based on the determined frequency resource, whether to add or omit a first bitmap indicating a plurality of groups in which at least one synchronization signal (SS) block is transmitted: generating, based on the determining to add the first bitmap, system information comprising a parameter comprising: the first bitmap; and a second bitmap indicating a position of one or more transmission SS blocks in each of the plurality of groups; and transmitting, based on the position, the one or more transmission SS blocks each comprising a Physical Broadcast Channel (PBCH) and a synchronization signal.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04L 1/1607 - Details of the supervisory signal
• H04W 72/30 - Resource management for broadcast services

Abstract

A communication method of a terminal with another terminal through a sidelink comprises: determining, by a first user device, one or more radio resource control (RRC) configurations comprising information of a demodulation reference signal (DMRS) for vehicle-to-everything (V2X) communication between user devices; determining, based on the one or more RRC configurations, a Physical Sidelink Control Channel (PSCCH) DMRS for a PSCCH; determining, based on a cyclic redundancy code of the PSCCH, an identifier; determining, based on the identifier, an initialization value associated with a Physical Sidelink Shared Channel (PSSCH) DMRS for a PSSCH; and via one or more orthogonal frequency division multiplexing (OFDM) symbols, transmitting, by the first user device to a second user device, the PSCCH DMRS and the PSSCH DMRS.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA
• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• H04W 72/20 - Control channels or signalling for resource management
• H04W 76/14 - Direct-mode setup
• H04B 7/0452 - Multi-user MIMO systems

Abstract

A method of performing sidelink positioning in a wireless communication system according to an aspect of the present disclosure may include, as an operation of receiving, by a first UE, allocation information from a base station, receiving, by each of one or more UEs, the allocation information from the base station; transmitting, by the first UE, the received allocation information to a second UE; as an operation of receiving, by the first UE, an SL SRS from the second UE, receiving, by each of the one or more UEs, the SL SRS transmitted from the second UE, and performing measurement based on the received SL SRS; and as an operation of transmitting measurement information acquired based on the measurement to the base station, acquiring, by each of the one or more UEs, measurement information by performing measurement based on the SL SRS and transmitting the same to the base station.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A sidelink positioning method may include, as an operation of receiving, by a first UE, respective allocation information on one or more UEs including the first UE from a base station, receiving, by each of the one or more UEs, the respective allocation information from the base station; transmitting, by the first UE, allocation information of the first UE and the respective allocation information on the one or more UEs to a second UE; as an operation of transmitting, by the first UE, a SL PRS to the second UE based on the allocation information of the first UE, receiving, by the second UE, an SL PRS from each of the one or more UEs based on the allocation information on the one or more UEs received from the first UE; and receiving, by the first UE, measurement information from the second UE.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management

Abstract

A communication method of a terminal with another terminal through a sidelink may provide information related to a demodulation reference signal (DMRS). A user device may demodulate a Physical Sidelink Control Channel (PSCCH) DMRS and a Physical Sidelink Shared Channel (PSSCH) DMRS, and may demodulate a PSCCH based on the demodulated PSCCH DMRS and demodulate a PSSCH based on the demodulated PSSCH DMRS.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04B 7/0452 - Multi-user MIMO systems
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA
• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• H04W 72/20 - Control channels or signalling for resource management
• H04W 76/14 - Direct-mode setup

Abstract

The present disclosure provides a method for performing HARQ retransmission by a terminal supporting V2X communication in a wireless communication system. The method for performing HARQ retransmission may comprise the steps of: transmitting data by a transmission terminal in a pre-configured resource; receiving, by the transmission terminal, a NACK response to the data from a reception terminal; and retransmitting the data by the transmission terminal after changing an NDI value based on a resource dynamically allocated from a base station.

IPC Classes  ?

• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method includes generating a first DM-RS for V2X communication and a second DM-RS for V2X communication, the first DM-RS for V2X communication being mapped in a first symbol in a first slot of a subframe, the second DM-RS for V2X communication being mapped in a second symbol in the first slot; generating a third DM-RS for V2X communication and a fourth DM-RS for V2X communication, the third DM-RS for V2X communication being mapped in a first symbol in a second slot of the subframe, the fourth DM-RS for V2X communication being mapped in a second symbol in the second slot; and transmitting the first DM-RS for V2X communication, the second DM-RS for V2X communication, the third DM-RS for V2X communication, and the fourth DM-RS for V2X communication. The first DM-RS is generated based on a first group-hopping, and the second DM-RS is generated based on a second group-hopping.

IPC Classes  ?

• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04J 13/00 - Code division multiplex systems
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 27/26 - Systems using multi-frequency codes

Abstract

Exemplary embodiments provide a method and apparatus for transmitting a synchronization signal for Device-to-Device (D2D) communication in a wireless communication system. The method includes: receiving, at a first UE, a D2D synchronization signal transmitted from a second UE, the D2D synchronization signal comprising a primary D2D synchronization signal (PD2DSS) and a secondary D2D synchronization signal (SD2DSS); determining a root index based on the received PD2DSS; and determining a type of a synchronization source based on the root index. The root index corresponds to an integer value X when the type of synchronization source is associated with D2DSSue_net. The root index corresponds to an integer value Y when the type of synchronization source is associated with D2DSSue_oon. Each of the integer value X and integer value Y is not an element of a set {25, 29, 34}.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Abstract

Sidelink downlink control information (SL DCI) associated with transmission of one or more sidelink signals may be communicated. A wireless user device may transmit, based on the SL DCI and to one or more second wireless user devices, the one or more sidelink signals via a first quantity of sidelink channel resources. The wireless user device may receive first sidelink HARQ feedback information responsive to the one or more sidelink signals. The wireless user device may determine, based on a sidelink HARQ feedback timing, a time interval to transmit the first sidelink HARQ feedback information. The wireless user device may determine, based on the first quantity, a sidelink HARQ codebook. The wireless user device may transmit, during the time interval, based on the sidelink HARQ codebook, and to the base station, an uplink signal indicating the first sidelink HARQ feedback information.

IPC Classes  ?

• H04W 4/00 - Services specially adapted for wireless communication networksFacilities therefor
• H04B 7/0456 - Selection of precoding matrices or codebooks, e.g. using matrices for antenna weighting
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 76/27 - Transitions between radio resource control [RRC] states
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

(2) corresponding to a sidelink identifier (SLID) value based on a number of types of a physical layer sidelink synchronization identity set and a number of sequences included in each type of the physical layer sidelink synchronization identity set; generating a sidelink primary synchronization signal (PSS) sequence and a sidelink secondary synchronization signal (SSS) sequence based on a first primitive polynomial, a second primitive polynomial, and a cyclic shift (CS) value; and mapping, on physical resources, and thereby transmitting the sidelink PSS sequence and the sidelink SSS sequence.

IPC Classes  ?

• H04J 11/00 - Orthogonal multiplex systems
• H04L 27/26 - Systems using multi-frequency codes
• H04W 56/00 - Synchronisation arrangements
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A method for estimating a location of a terminal in a wireless communication system. At this time, the method for estimating the position of the terminal is a step of receiving DL PRS configuration information from the base station, the received DL PRS configuration information comprises comb size and DL PRS allocation pattern information, the comb size and the DL PRS allocation pattern It may comprise receiving a DL PRS from the base station based on and estimating a location based on the received DL PRS.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

The present disclosure relates to an uplink synchronization method and apparatus for a terminal in an inactive state in a wireless communication system. An uplink synchronization method of a terminal in an inactive state in a wireless communication system according to an embodiment of the present disclosure includes: receiving periodic uplink transmission resource configuration information from a base station; starting a time alignment timer (TAT) by receiving a timing advance command (TAC) from the base station; Transitioning to an inactive state by receiving a RRC (Radio Resource Control) release message including a suspend configuration from the base station; In the inactive state, when a predetermined trigger condition is satisfied, performing uplink transmission to the base station based on the periodic uplink transmission resource configuration information, wherein the predetermined trigger condition is the elapsed time since the TAT started. At least one of a time-related condition, a condition related to the time remaining until the TAT expires, a condition related to the expiration of the periodic notification area update timer, or a condition related to reception of a timing advance (TA) update command from the base station and the uplink transmission includes at least one of small data and dummy data; and receiving an additional TAC from the base station and restarting the TAT.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04W 76/20 - Manipulation of established connections
• H04W 76/30 - Connection release

Abstract

Provided is a first wireless user device operating in a sidelink unlicensed band in a wireless communication system, the device comprising: at least one antenna for transmitting and receiving one or more wireless signals; at least one processor; and a memory for, when executed by at least one process, storing instructions for a wireless user device. The operation of the wireless user device may comprise: establishing a resource pool including at least one RBS in a sidelink unlicensed band; configuring an S-SSB transmission resource of an S-SSB transmitted in one slot of the sidelink unlicensed band; and transmitting the S-SSB on the basis of the configured S-SSB transmission resource, wherein the S-SSB comprises a PSBCH, an S-PSS, and an S-SSS, and the S-SSB transmission resource is determined on the basis of the sidelink unlicensed band.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 56/00 - Synchronisation arrangements
• H04W 72/53 - Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
• H04W 72/04 - Wireless resource allocation
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

The present disclosure is to detect welding defects and perform reconstruction on basis of artificial intelligence, and a method for detecting welding defects and performing reconstruction may comprise the steps of: collecting non-destruction detection data; generating defect detection data from the non-destruction detection data by using a trained artificial intelligence model; determining whether or not to perform reconstruction on the basis of the non-destruction detection data and the defect detection data; and when reconstruction is determined to be performed, generating reconstruction process data and performing reconstruction on the basis of the reconstruction process data.

IPC Classes  ?

• B23K 31/12 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to investigating the properties, e.g. the weldability, of materials
• G06N 3/08 - Learning methods
• G06T 7/00 - Image analysis

Abstract

A wireless communication system may: receive system information including a handover command from a source base station; perform a random access procedure with a target base station; when the random access procedure is completed, transmit a radio resource control (RRC) reconfiguration complete message; and perform downlink and uplink transmission with the target base station.

IPC Classes  ?

• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/18 - Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04W 72/232 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Abstract

Provided is a wireless user device that is connected to a satellite on the basis of an NTN in a wireless communication system, wherein NTN DMRS bundling-related setting information and DMRS bundling enabling instruction information may be acquired via upper layer signaling, pre-compensation procedure application time information may be transmitted to a base station on the basis of the upper layer signaling, and PUSCH with DMRS may be transmitted to the base station via DMRS bundling on the basis of the pre-compensation procedure application time information.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 25/02 - Baseband systems Details
• H04W 84/06 - Airborne or Satellite Networks

Abstract

In a wireless communication system, a handover command may be received from a source base station, uplink timing may be adjusted on the basis of the handover command, an RRC reconfiguration completion message may be transmitted to a target base station on the basis of the adjusted uplink timing, and downlink and uplink transmission may be performed to or from the target base station.

IPC Classes  ?

• H04W 36/00 - Handoff or reselecting arrangements
• H04B 7/185 - Space-based or airborne stations
• H04W 84/06 - Airborne or Satellite Networks

Abstract

Provided is a wireless user device connected to a satellite based on an NTN in a wireless communication system, wherein the wireless user device may communicate with a base station in a first cell based on a first satellite, select a beam of a second satellite according to the movement of the first satellite, perform uplink synchronization with the second satellite according to the movement of the first satellite, and communicate with the base station in the first cell via the second satellite on the basis of the selected beam and uplink synchronization.

IPC Classes  ?

• H04W 36/18 - Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
• H04W 36/00 - Handoff or reselecting arrangements
• H04B 7/185 - Space-based or airborne stations
• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04W 84/06 - Airborne or Satellite Networks

Abstract

A method for configuring a resource for sidelink positioning in a wireless communication system according to an aspect of the present disclosure may comprise the steps of: determining, by a first terminal, a first sidelink positioning transmission resource; determining, by the first terminal, second sidelink positioning transmission resources to be transmitted by second terminals; transmitting, by the first terminal, information about the second sidelink positioning transmission resources to the second terminals; and transmitting, by the first terminal, a sidelink positioning reference signal on the basis of the first sidelink positioning transmission resource.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/04 - Wireless resource allocation
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A method for configuring a resource for sidelink positioning in a wireless communication system, according to an aspect of the present disclosure, may comprise the steps of: a first terminal determining a first sidelink positioning transmission resource; the first terminal determining second sidelink positioning transmission resources to be transmitted by second terminals; the first terminal transmitting, to the second terminals, information regarding the second sidelink positioning transmission resources; and the first terminal transmitting a sidelink positioning reference signal on the basis of the first sidelink positioning transmission resource.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

Provided is a first wireless user device operating in a sidelink unlicensed band in a wireless communication system, the device comprising: at least one antenna for transmitting and receiving one or more wireless signals; at least one processor; and a memory for, when executed by at least one process, storing instructions for the wireless user device. The operation of the wireless user device may comprise: receiving SL data from a second wireless user device via a PSSCH; determining a PSFCH resource associated with the PSSCH; and transmitting SL HARQ-ACK information for the PSSCH by using the determined PSFCH resource, wherein the PSFCH resource is configured on the basis of either an interlaced-RB or a continuous PRB.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 72/04 - Wireless resource allocation

Abstract

Provided is a method of performing HARQ by a UE in a wireless communication system that supports carrier aggregation (CA). The method includes: receiving, from an evolved nodeB (eNB), a downlink grant on a first Physical Downlink Control Channel (PDCCH), the downlink grant including an accumulated downlink assignment indicator (A-DAI) field and a total DAI (T-DAI) field; receiving a first PDSCH indicated by the first PDCCH, the first PDSCH being transmitted from the eNB; receiving, from the eNB, an uplink grant on a second PDCCH, the uplink grant indicating a transmission of a Physical Uplink Shared Channel (PUSCH); determining a size of a HARQ-ACK codebook to which a HARQ-ACK with respect to the first PDSCH is to be mapped, based on the A-DAI and the T-DAI; and transmitting, to the eNB, the HARQ-ACK with respect to the first PDSCH on the PUSCH.

IPC Classes  ?

• H04W 4/00 - Services specially adapted for wireless communication networksFacilities therefor
• H04B 7/0413 - MIMO systems
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

One or more synchronization procedures in wireless communications are provided. A wireless user device may determine a global navigation satellite system (GNSS) as a synchronization reference source associated with a sidelink synchronization. The wireless user device may determine, based on the GNSS being the synchronization reference source associated with a sidelink synchronization and a subcarrier spacing index for sidelink, a slot number for sidelink communication. The wireless user device may transmit, based on the slot number, a sidelink synchronization signal from the wireless user device to a second wireless user device.

IPC Classes  ?

• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• G01S 19/05 - Cooperating elementsInteraction or communication between different cooperating elements or between cooperating elements and receivers providing aiding data
• H04L 27/26 - Systems using multi-frequency codes
• H04W 56/00 - Synchronisation arrangements
• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

Provided is a method and apparatus for receiving a reference signal. A wireless user device may determine, based on a synchronization signal (SS) block index and based on an index associated with a time interval, an initialization value associated with a reference signal for a physical broadcast channel (PBCH). The wireless user device may receive, based on the initialization value and based on a frequency domain shift value, the reference signal via at least one resource element (RE). The reference signal may be mapped, based on the frequency domain shift value, to the at least one RE. The wireless user device may receive the PBCH.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 27/26 - Systems using multi-frequency codes
• H04W 72/12 - Wireless traffic scheduling
• H04W 72/30 - Resource management for broadcast services
• H04W 84/04 - Large scale networksDeep hierarchical networks

Abstract

A method, apparatus, and system for transmitting and receiving a physical broadcast channel (PBCH) are provided. A base station may perform a first scrambling process on PBCHs in a time period before a channel coding, and perform a second scrambling process after the channel coding. PHCH payloads and PBCH DMRS may provide information bits to be used in the scrambling processes. A wireless user device may receive one or more PBCHs transmitted from the base station.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 25/03 - Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
• H04W 72/044 - Wireless resource allocation based on the type of the allocated resource
• H04W 72/30 - Resource management for broadcast services

Abstract

Provided is a method for determining and performing a packet duplication transmission between wireless devices. The method comprises receiving, from an evolved NodeB (eNB), configuration information associated a packet duplication transmission between wireless devices, wherein the configuration information comprising a packet reliability parameter associated with activation of the packet duplication transmission between wireless devices; determining, by a first wireless device, a data packet to be transmitted to a second wireless device; duplicating, based on determining the data packet satisfies the packet reliability parameter, the data packet to a plurality of data duplicates; mapping the plurality of data duplicates onto different logical channels in a media access channel (MAC) layer; and transmitting, by the first wireless device and via a direct communication to a second wireless device, the plurality of data duplicates mapped onto different logical channels.

IPC Classes  ?

• H04W 4/44 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/46 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• H04W 76/27 - Transitions between radio resource control [RRC] states
• H04W 80/02 - Data link layer protocols

Abstract

Provided is a wireless user device that performs a HARQ feedback operation on the basis of an IoT NTN in a wireless communication system, wherein the wireless user device may receive a setting for a HARQ feedback disabling configuration on the basis of upper layer signaling, perform HARQ feedback disabling on the basis of at least one of the upper layer signaling and downlink control information (DCI), and may not perform HARQ feedback in a corresponding HARQ process on the basis of the HARQ feedback disabling.

IPC Classes  ?

• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 84/06 - Airborne or Satellite Networks
• H04W 92/10 - Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
• H04B 7/185 - Space-based or airborne stations

Abstract

An operation of a wireless user device performing an LBT operation in a sidelink unlicensed band in a wireless communication system may comprise: selecting a resource pool and a resource for sidelink communication on the basis of a resource pool and resource selection procedure; performing an LBT procedure in the selected resource pool and resource on the basis of the sidelink unlicensed band; on the basis of the LBT procedure, checking whether continuous LBT failures occur; and when continuous LBT failures have occurred, selecting a resource for sidelink communication on the basis of a transmission resource selection procedure.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 24/08 - Testing using real traffic
• H04W 76/19 - Connection re-establishment
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

Provided is a first wireless user device operating in a sidelink unlicensed band in a wireless communication system, the wireless user device including: at least one antenna for transmitting or receiving one or more wireless signals; at least one processor; and a memory for storing, when executed by the at least one processor, instructions for the wireless user device. An operation of the wireless user device may include: transmitting SL data to a second wireless user device through a PSSCH; receiving SL HARQ-ACK information with respect to the PSSCH on the basis of PSFCH ROC related to the PSSCH; and generating SL HARQ feedback information on the basis of the SL HARQ-ACK information and reporting same to a base station, wherein the PSSCH may be associated with a PSFCH ROC set including multiple PSFCH ROCs, on the basis of the unlicensed band.

IPC Classes  ?

• H04W 72/21 - Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/04 - Wireless resource allocation
• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A wireless user device comprises at least one antenna, at least one processor, and memory storing instructions that cause the wireless user device to: receive first radio access network-based notification area (RNA) information, wherein the wireless user device is in a radio resource control (RRC) inactive mode; receive, from a base station, second RNA information different from the first RNA information, and an access barring threshold value, based on a difference between the first RNA information and the second RNA information and based on the access barring threshold value, determine that an RNA update indication is allowed, transmit, to the base station and based on determining that the RNA update indication is allowed, an RNA update indication message, receive an RNA update reject message responsive to the RNA update indication message, and after receiving the RNA update reject message and while a timer is running, start a cell reselection.

IPC Classes  ?

• H04W 76/27 - Transitions between radio resource control [RRC] states
• H04W 8/02 - Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]Transfer of mobility data, e.g. between HLR, VLR or external networks
• H04W 68/00 - User notification, e.g. alerting or paging, for incoming communication, change of service or the like

Abstract

Methods, apparatuses, and systems described herein generally relate to a reference signal generation and mapping. For example, a method comprises determining a first set of antenna ports for a demodulation reference signal (DM-RS) transmission; determining, based on the first set, a frequency index associated with four adjacent resource elements, wherein the four adjacent resource elements correspond to two adjacent symbols in a time axis and to two adjacent subcarriers in a frequency axis; generating, based on a first orthogonal cover code and a second orthogonal cover code, a DM-RS associated with the first set of antenna ports; and transmitting, via a mapping to the four adjacent resource elements, the DM-RS associated with the first set of antenna ports.

IPC Classes  ?

• H04B 7/02 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas
• H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
• H04J 11/00 - Orthogonal multiplex systems
• H04J 13/16 - Code allocation
• H04J 13/18 - Allocation of orthogonal codes
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 27/00 - Modulated-carrier systems
• H04L 27/26 - Systems using multi-frequency codes
• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 88/02 - Terminal devices
• H04B 7/0452 - Multi-user MIMO systems

Abstract

A wireless user device in a wireless communication system may: receive a configuration of at least one HARQ feedback transmission opportunity; transmit an HARQ feedback on the basis of the configured at least one HARQ feedback transmission opportunity; operate a sidelink DRX HARQ RTT timer on the basis of HARQ feedback transmission; and receive a retransmission grant when the sidelink DRX HARQ RTT timer expires.

IPC Classes  ?

• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/20 - Control channels or signalling for resource management
• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 16/14 - Spectrum sharing arrangements
• H04W 24/08 - Testing using real traffic
• H04W 76/28 - Discontinuous transmission [DTX]Discontinuous reception [DRX]
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04W 52/02 - Power saving arrangements

Abstract

A wireless user device operating in a sidelink unlicensed band in a wireless communication system may comprise at least one antenna for transmitting and receiving one or more wireless signals, at least one processor, and a memory for storing, when executed by the at least one processor, indications for the wireless user device, wherein an operation of the wireless user device comprises the steps of: determining the number of OFDM symbols available for PSSCH transmission; determining the number of coded symbols of 2nd SCI on the basis of the number of OFDM symbols available for PSSCH transmission; determining the number of resource elements of the 2nd SCI on the basis of the number of coded symbols of the 2nd SCI; and mapping the 2nd SCI to a radio resource on the basis of a parameter related to the position of a starting OFDM symbol and a parameter related to the number of OFDM symbols, and transmitting same to another wireless user device.

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Abstract

A terminal operation method in a wireless communication system may comprise the steps of: receiving system information by a terminal; transmitting a random access preamble on the basis of the system information by the terminal; receiving a response to the random access preamble; performing uplink transmission scheduled on the basis of an uplink grant included in the response; receiving a contention resolution message on the basis of the uplink transmission; and repetitively transmitting a PUCCH including HARQ-ACK on the contention resolution message.

IPC Classes  ?

• H04W 74/00 - Wireless channel access
• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 72/21 - Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
• H04W 84/06 - Airborne or Satellite Networks
• H04L 1/08 - Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A method by which a terminal performs sidelink communication on the basis of an unlicensed band in a wireless communication system, may comprise the steps of: receiving, by the terminal from a base station, sidelink resource pool configuration information on the basis of higher layer signaling; generating SL grant if data is generated in LCH on the basis of the sidelink resource pool configuration information; selecting a slidelink resource pool according to whether HARQ feedback is configured in the data generated in the LCH on the basis of the sidelink resource pool configuration information; and performing sidelink transmission by selecting a sidelink transmission resource from the selected sidelink resource pool.

IPC Classes  ?

• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/20 - Control channels or signalling for resource management
• H04W 72/54 - Allocation or scheduling criteria for wireless resources based on quality criteria
• H04W 16/14 - Spectrum sharing arrangements
• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A method for performing sidelink positioning in a wireless communication system, according to one aspect of the present disclosure, may comprise the steps of: acquiring sidelink resource pool configuration information; acquiring SL PRS configuration information; and transmitting an SL PRS on the basis of SL PRS allocation.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 24/08 - Testing using real traffic
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A method and apparatus for performing a sidelink Hybrid Automatic Repeat Request (HARQ) operation are provided. The method may include establishing a communication session through an upper layer signaling; receiving configuration information for a HARQ operation through the upper layer; receiving downlink control information (DCI) from a network; transmitting sidelink data through a sidelink channel based on the received DCI; and receiving a response to the sidelink data.

IPC Classes  ?

• H04W 72/232 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04L 1/1867 - Arrangements specially adapted for the transmitter end
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

This method for configuring a sidelink resource pool for a terminal in a wireless communication system may comprise the steps of: receiving, by a terminal, resource pool configuration information from a base station on the basis of higher layer signaling; transmitting sidelink control information to another terminal on the basis of the resource pool configuration information; and performing sidelink communication with another terminal, wherein the resource pool configuration information is information based on an unlicensed band sidelink resource pool configuration.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. ALOHA
• H04W 72/20 - Control channels or signalling for resource management
• H04W 72/54 - Allocation or scheduling criteria for wireless resources based on quality criteria
• H04W 72/53 - Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A method by which a terminal updates a reference location on the basis of non-terrestrial networks (NTN) in a wireless communication system, may comprise the steps of: obtaining reference location-related information from a base station; determining whether the distance between the terminal and the reference location is less than a distance threshold on the basis of the reference location-related information, wherein if the distance between the terminal and the reference location is less than the distance threshold, measurement for cell reselection is not performed, and if the distance between the terminal and the reference location is greater than the distance threshold, the measurement for cell reselection is performed; and if the distance between the terminal and the reference location is less than the distance threshold, updating the reference location on the basis of a timer related to the reference location.

IPC Classes  ?

• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
• H04W 24/08 - Testing using real traffic
• H04W 84/06 - Airborne or Satellite Networks
• H04B 7/185 - Space-based or airborne stations

Abstract

The present invention pertains to a method for performing sidelink communication in an unlicensed band, and the method may comprise the steps of: determining the total resource elements (REs) for a physical sidelink shared channel (PSSCH); and determining the transport block size (TBS) on the basis of the total REs.

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/20 - Control channels or signalling for resource management
• H04W 72/04 - Wireless resource allocation
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 72/12 - Wireless traffic scheduling

Abstract

A method for performing cell reselection by a terminal on the basis of non-terrestrial networks (NTN) in a wireless communication system may be provided. In this case, the method for performing cell reselection may comprise the steps of: obtaining cell reselection condition information from a base station; moving from a first cell to a second cell on the basis of the mobility of the terminal and obtaining measurement-related information for cell reselection from the second cell; and performing an NTN cell search when a specific condition for cell reselection is satisfied on the basis of the cell reselection condition information.

IPC Classes  ?

• H04W 36/08 - Reselecting an access point
• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
• H04W 84/06 - Airborne or Satellite Networks
• H04W 48/16 - DiscoveringProcessing access restriction or access information

Abstract

Exemplary embodiments provide a method and apparatus for transmitting data through a device-to-device (D2D) communication between user equipments (UEs), the method including: generating, at a first UE, first D2D data, the first D2D data corresponding to a transport block (TB) unit; and transmitting, from the first UE to a second UE, the first D2D data through at least one D2D communication resource, the at least one D2D communication resource being based on a sub-RPT (sub-resource pattern for transmission). An RPT defined in a D2D resource pool is configured based on the sub-RPT, and the sub-RPT indicates the at least one D2D communication resource for the transmission of the first D2D data among at least two D2D communication candidate resources.

IPC Classes  ?

• H04W 72/02 - Selection of wireless resources by user or terminal
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• H04W 8/00 - Network data management
• H04W 76/14 - Direct-mode setup
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

Sidelink downlink control information may include a first indicator field that indicates a sidelink hybrid automatic repeat request (HARQ) feedback timing. A bitwidth of the first indicator field may be based on at least one of one or more parameters from the base station. The first wireless user device may transmit, based on the SL DCI and to a second wireless user device, a first sidelink signal. The first wireless user device may receive, during a first time interval and from the second wireless user device, first sidelink HARQ feedback information responsive to the first sidelink signal. The first wireless user device may determine, based on the sidelink HARQ feedback timing and based on the first time interval, a second time interval. The first wireless user device may transmit, during the second time interval and to the base station, the first sidelink HARQ feedback information.

IPC Classes  ?

• H04L 1/1812 - Hybrid protocolsHybrid automatic repeat request [HARQ]
• H04W 72/21 - Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal