provided are a method and device for setting a flight path reflecting an air space of a drone. the method may include receiving flight data collected by the drone; calculating a path error score indicating an extent of deviation of the drone from a planned flight path by comparing the received flight data with the planned flight path of the drone; adjusting the preset air space of the drone based on the path error score; and generating a new flight path of the drone based on the adjusted air space of the drone and a destination.
a method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block, generating a merge candidate list for the current block based on the spatial merge candidate, obtaining motion information for the current block based on the merge candidate list, and performing motion compensation for the current block using the motion information. herein, if the current block does not have a pre-defined shape or does not have a size equal to or greater than a pre-defined size, the spatial merge candidate of the current block is derived based on a block having the pre-defined shape or having a size equal to or greater than the pre-defined size, the block comprising the current block.
a method for dynamically applying a battery saving technology by a terminal is disclosed. the method comprises transmitting a first message requesting an activation of a battery saving technology dynamic service to an authentication server, receiving a second message being a response to the first message from the authentication server, transmitting and receiving data with a base station in a battery saving technology deactivated state, when response information included in the second message comprises authentication success, and at least one application included in the second message is running, and maintaining a battery saving technology activated state when the application included in the second message is not running.
a method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block, generating a merge candidate list for the current block based on the spatial merge candidate, obtaining motion information for the current block based on the merge candidate list, and performing motion compensation for the current block based on the motion information. herein, if the current block does not have a pre-defined shape or a size equal to or greater than a pre-defined size, the spatial merge candidate of the current block may be derived based on a block which have the pre-defined shape or a size equal to or greater than the pre-defined size, the block including the current block.
provided are a method and a device for quantum key distribution. the quantum key distribution device may be connected to another quantum key distribution device through a quantum channel and distribute a quantum cryptography key. the device may include an optical unit having an optical element to transmit information, and a post-processor for calculating a quantum cryptography key by processing a random number generated by the optical unit. the device may include at least one of the optical unit including a plurality of unit optical modules, the post-processor having a plurality of unit post-processing modules, and the optical unit having a plurality of unit optical modules and the post-processor having a plurality of unit post-processing modules.
an image decoding method according to the present invention may comprise obtaining a motion vector of a current block, updating the motion vector when bi-directional optical flow is applied to the current block, performing motion compensation on the current block by using the updated motion vector.
an image decoding method according to the present invention comprises the steps of: deriving most probable mode (mpm) candidates on the basis of an intra-prediction mode of candidate blocks; determining whether the mpm candidate having the intra-prediction mode, which is the same as that of a current block, exists among mpm candidates; and deriving the intra-prediction mode of the current block on the basis of the determination, wherein the candidate block includes a neighboring block which is adjacent to the current block, and a non-neighboring block which is not adjacent to the current block.
provided are a method and device for switching between unicast transmission and multicast/broadcast service (mbs) transmission in a cellular wireless communication network. the method for a base station to switch mbs data transmission may include: transmitting configuration information for reception of mbs data of a user equipment (ue) to the ue; transmitting information instructing a change of radio bearer for the reception of the mbs data to the ue; and receiving a packet data convergence protocol (pdcp) status report from the ue.
provided are methods and apparatuses for transmitting and receiving coordination information for sidelink communication. the method includes: enabling transmission and reception of coordination information between the user equipments; configuring the coordination information including information on a preferred resource set or a non-preferred resource set for the transmitting user equipment or resource conflict information; and transmitting the coordination information.
provided are a method and device for processing multicast/broadcast service (mbs) data by a ue in an nr-based mobile communication network. the method may include receiving configuration information for receiving mbs data through semi-persistent scheduling (sps), monitoring indication information associated with the sps based on the configuration information, and receiving the mbs data according to the sps based on the configuration information.
a method of decoding an image according to the present disclosure includes determining whether an inverse transform is skipped to a current block, parsing information on a residual coefficient of the current block, reconstructing the residual coefficient by inversely binarizing the information and selectively applying the inverse transform to the residual coefficient. in this case, the inverse binarization may be performed based on a rice parameter for the residual coefficient and the rice parameter may be derived based on a first variable derived based on a sum of absolute values of reference residual coefficients.
an image decoding method according to the present invention comprises the steps of: deriving most probable mode (mpm) candidates on the basis of an intra-prediction mode of candidate blocks; determining whether the mpm candidate having the intra-prediction mode, which is the same as that of a current block, exists among mpm candidates; and deriving the intra-prediction mode of the current block on the basis of the determination, wherein the candidate block includes a neighboring block which is adjacent to the current block, and a non-neighboring block which is not adjacent to the current block.
according to the present invention, there is provided a method of decoding an image, the method including: determining an intra prediction mode of a current block; determining a reference sample line for a prediction target sample included in the current block; and obtaining a prediction value of the prediction target sample on the basis of the intra prediction mode and the reference sample line.
an image decoding method according to the present invention can comprise the steps of: acquiring residual coefficients of a current block; dequantizing the residual coefficients; performing secondary inverse transformation on the dequantized residual coefficients; and performing primary inverse transformation on the performance result of the secondary inverse transformation. the secondary inverse transformation can be performed for a partial region of the current block.
provided are a configuration method and a transmission method of a new reference signal for frequency offset estimation in a novel wireless communication system. the method may include configuring a synchronization signal to be transmitted through a first bandwidth part of one or more bandwidth parts configured by dividing an entire bandwidth into one or more parts, allocating the one or more reference signals for estimating the frequency offset on one or more resources other than a resource for configuring the synchronization signal, and transmitting the one or more reference signals for estimating the frequency offset.
provided are a method and device for transmitting/receiving data in a half-duplex scheme. the method may include performing, as a first operation, one of signal transmission through an uplink and signal reception through a downlink in an fdd channel environment, receiving information indicating, as a second operation, the other of the signal transmission through the uplink and the signal reception through the downlink while performing the first operation, and stopping the first operation and performing the second operation according to the reception of the information.
according to the present invention, there is provided a method of decoding an image, the method including: determining whether a non-zero residual coefficient is included in a current block; and decoding residual coefficients included in the current block according to a scanning order of the current block, when it is determined that the non-zero residual coefficient is included in the current block. herein, an absolute value of the residual coefficient of which a scanning index is greater than a residual coefficient adjustment index is equal to or less than a residual coefficient adjustment reference value.
provided are a method and apparatus for controlling sidelink communication. the method for performing, by a terminal, sidelink communication, may include the steps of: for a sidelink harq operation, receiving, from a base station, sidelink discontinuous harq configuration information used for monitoring a physical downlink control channel (pdcch); transmitting sidelink data; and monitoring, in a pdcch discontinuous monitoring section, the pdcch configured on the basis of discontinuous reception (drx) parameters included in the sidelink discontinuous harq configuration information.
an image decoding method according to the present invention can comprise the steps of: deriving merge candidates from neighboring blocks adjacent to a current block; generating a merge candidate list including the merge candidates, wherein the arrangement order of the merge candidates in the merge candidate list is determined on the basis of initial priorities; re-arranging the merge candidates included in the merge candidate list; decoding information for specifying at least one of the merge candidates included in the merge candidate list; and deriving motion information of the current block from a merge candidate corresponding to the information.
the present disclosure relates a method of transmitting a buffer status report by a terminal. the method may include i) receiving an rrc reconfiguration message including identification information, ii) identifying logic channels associated with the first base station and logic channels associated with the second base station, iii) triggering the buffer status report by identifying buffer statuses of the identified logic channels associated with the first base station and the second base station, and transmitting the buffer status reports to the first base station and the second base station.
provided are methods and apparatuses for transmitting and receiving coordination information for sidelink communication. the method includes: distinguishing a type of coordination information for the transmitting user equipment; determining whether a transmission trigger condition of the coordination information is satisfied according to the type of the coordination information; and transmitting the coordination information when the transmission trigger condition is satisfied.
an access control technology in a next generation mobile communication network is disclosed. more specifically, disclosed is a technology for controlling an access control operation of a terminal through an integrated category by various methods and layers. one embodiment provides a method by which a terminal performs integrated access control, comprising the steps of: receiving, from a base station, system information including information for access control; indicating access category information from an nas layer to an as layer of the terminal when an access attempt is triggered; confirming whether access barring parameter information is included in the system information; and controlling an access barring check operation in the as layer by using at least one of the access category information and the access barring parameter information.
a method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block from at least one of a first spatial neighboring block adjacent to the current block or a second spatial neighboring block adjacent to the first spatial neighboring block, generating a merge candidate list including the spatial merge candidate, and performing a motion compensation for the current block by using the merge candidate list.
provided are methods and apparatuses for transmitting harq feedback information for sidelink transmission. in particular, a method of a transmitter user equipment (tx ue) is provided for transmitting the harq feedback information for the sidelink transmission. the method may include: receiving, from the base station, resource allocation information on a physical uplink control channel (pucch) for transmitting, to the base station, the harq feedback information for the sidelink transmission to a receiver user equipment (rx ue); generating the harq feedback information based on a physical sidelink feedback channel (psfch) for the sidelink transmission received from the rx ue; and transmitting the harq feedback information over the pucch based on the resource allocation information to the base station.
provided is a method for a base station executing a multi-beam-based random access procedure in wireless communication, and a device therefor. the method may include: transmitting information associated with a rach resource to a terminal; receiving a multi-rach preamble from the terminal by a multi-beam; and transmitting a random access response to the terminal.
provided are a method and a device for performing a ue-based handover in a next generation wireless access network. the method of a ue may include receiving, from a source base station, an upper layer signaling including information on ue-based handover command and information on conditions for handover execution; storing a target cell configuration by using the information on conditions for handover execution; and determining whether to perform a handover procedure to a target cell, by determining whether predetermined conditions for handover are satisfied.
an image decoding method according to the present invention comprises the steps of: deriving at least one merge candidate on the basis of at least one of a spatial neighboring block and a temporal neighboring block of a current block; generating a merge candidate list including the merge candidate; acquiring lx direction motion information of the current block, from a first merge candidate included in the merge candidate list; acquiring l(1−x) direction motion information of the current block, from a second merge candidate different from the first merge candidate; and performing inter-prediction on the basis of the lx direction motion information and the l(1−x) direction motion information.
the present invention is related to processing a video signal. a method for decoding a video according to the present invention may comprise checking a merge coding unit which is generated by merging a plurality of coding units neighboring each other based on an encoded syntax element, and decoding the checked merge coding unit, wherein a same motion vector is shared in the merge coding unit.
provided is a method of transmitting and receiving a data channel for the next-generation/5g radio access network. the method may include: receiving setting information about a code block group (cbg) for retransmission of the data channel from a base station; and receiving downlink control information (dci) including scheduling information about the data channel from the base station, wherein the dci includes transmission direction information about the cbg.
the image decoding method according to the present invention comprises the steps of determining an intra prediction mode of a current block, dividing the current block into a plurality of subblocks, and for the plurality of subblocks, sequentially performing intra prediction.
provided is an image decoding method. the method may include; deriving first reference samples located at the upper end and on the left side of a current block; deriving second reference samples located on the right side and at the lower end of the current block; and acquiring a prediction sample for the current block based on the first and second reference samples, wherein the second reference samples are derived based on the first reference samples and temporary prediction samples generated by performing temporary intra prediction on the current block based on a temporary intra prediction mode.
an image decoding method according to the present invention may comprise determining an intra prediction mode of a current block, deriving reference samples of the current block, and obtaining a prediction sample of the current block using at least one of the reference samples.
provided are a method and device for controlling sidelink communication. the method may include receiving sidelink discontinuous reception configuration information, configuring the sidelink discontinuous reception configuration information in the terminal, and discontinuously monitoring a physical sidelink control channel (pscch) on the basis of discontinuous reception (drx) parameters included in the sidelink discontinuous reception configuration information.
a method of video decoding according to the present invention may comprise determining an intra prediction mode of a current block, determining a dc value using reference samples adjacent to the current block when the intra prediction mode of the current block is a dc mode, and deriving a prediction sample of the current block based on the dc value.
a method for decoding a video according to the present invention may comprise: obtaining a weighted prediction parameter of a current block, determined, based on the weighted prediction parameter, weights applying to a first prediction block generated based on a first reference picture and a second prediction block generated based on a second reference picture, and obtaining, based on a weighted sum of the first prediction block and the second prediction block, a final prediction block of the current block.
an image decoding method, according to the present invention, can comprise the steps of: deriving a spatial merge candidate of a current block; generating a merge candidate list for the current block on the basis of the spatial merge candidate; acquiring motion information on the current block on the basis of the merge candidate list; and performing motion compensation for the current block by using the motion information.
an image decoding method according to the disclosure comprises the steps of: determining whether a cross-component linear model (cclm) mode is applied to a chroma block; acquiring a filtered neighboring luma sample with respect to a neighboring chroma sample adjacent to the chroma block, when it is determined that the cclm mode is applied to the chroma block; deriving a cclm parameter by using the neighboring chroma sample and the filtered neighboring luma sample; and generating a prediction block for the chroma block by using the cclm parameter.
an image decoding method according to the present invention may comprise the steps of: deriving a merge candidate from a candidate block; generating a first merge candidate list including the merge candidate; specifying any one of a plurality of merge candidates included in the first merge candidate list; deriving affine vectors of a current block on the basis of motion information of the specified merge candidate; deriving a motion vector of a sub-block in the current block on the basis of the affine vectors; and performing motion compensation on the sub-block on the basis of the motion vector.
a method for decoding a video according to the present invention may comprise: determining merge target candidate blocks of a current coding block, specifying at least one among the merge target candidate blocks, and generating a merged block by merging the specified merge target candidate block and the current coding block.
a method for decoding an image according to the present invention comprises the steps of: deriving an intra prediction mode of a current block; and changing the intra prediction mode to a wide angle intra prediction mode when the intra prediction mode is less than or equal to a threshold value and the current block is a non-square having a width greater than a height.
a method for decoding a video according to the present invention may comprise: determining whether to divide a current block with quad tree partitioning, and dividing the current block into four partitions based on a vertical line and a horizontal line when it is determined that the current block is divided with the quad tree partitioning.
provided are a method and apparatus for a user equipment, a core network, and a second device to enable bidirectional communication for second devices. the method of the second device may include receiving internet protocol (ip) configuration information for automatically configuring an ip version 6 (ipv6) address of the second device from a core network through a user equipment; generating the ipv6 address using information in the ip configuration information; and transmitting the generated ipv6 address to the core network through the ue.
provided are a method and a device for a terminal executing a scheduling request in wireless communication. the method may include: receiving, from a base station, scheduling request configuration information for configuring a scheduling request using a multi-scheduling request resource; allocating the multi-scheduling request resource according to the scheduling request configuration information; and transmitting, to the base station, a multi-scheduling request using the multi-scheduling request resource.
a method for processing a video according to the present invention may comprise: generating a plurality of most probable mode (mpm) candidates; determining whether there is an mpm candidate identical to an intra-prediction mode of a current block among the plurality of mpm candidates; obtaining the intra-prediction mode of the current block, based on a result of the determining; and performing an intra-prediction for the current block, based on the intra-prediction mode of the current block.
according to the present invention, there is provided a method of decoding an image, the method including: deriving a spatial merge candidate of a current block; generating a first merge candidate list including the spatial merge candidate; obtaining motion information of the current block on the basis of the first merge candidate list; and performing motion compensation on the current block by using the motion information. herein, when the number of merge candidates included in the first merge candidate list is smaller than the maximum number, at least one merge candidate included in a second merge candidate list is added to the first merge candidate list.
a method for decoding a video according to the present invention may comprise: decoding information indicating whether illumination compensation is performed for a current block, determining an illumination compensation parameter of the current block when the information indicates that the illumination compensation is performed for the current block, obtaining a prediction block by performing inter prediction for the current block, and performing the illumination compensation on the current block using the illumination compensation parameter.
provided are a method and a device for hopping a frequency to perform uplink transmission. the method may include: receiving frequency hopping configuration information for a transport block transmitted using a plurality of slots; determining a frequency resource location to be hopped in the plurality of slots based on the frequency hopping configuration information; and transmitting the transport block through the plurality of slots according to the frequency resource location.
an image decoding method according to the present invention may include: a step for deriving merge candidates from neighboring blocks adjacent to a current block; a step for generating a first merge candidate list including the merge candidates; a step for decoding information for specifying any one of the merge candidates included in the first merge candidate list; and a step for deriving motion information about the current block from the merge candidate allocated with an index determined by the information. here, when the number of the merge candidates included in the first merge candidate list is smaller than a predetermined value, merge candidates included in a second merge candidate list may be added to the first merge candidate list.
a method for decoding an image according to the present invention comprises the steps of: deriving an intra prediction mode of a current block; and changing the intra prediction mode to a wide angle intra prediction mode when the intra prediction mode is less than or equal to a threshold value and the current block is a non-square having a width greater than a height.
provided are apparatus and method for communication in a non-terrestrial network (ntn). the method may include: receiving, from a base station, harq process activation indication information indicating whether to activate an harq process operation; determining whether to perform the harq process operation for a downlink signal on the basis of information included in the downlink signal when the downlink signal is received from the base station if the harq process operation deactivation is configured by the harq process activation indication information; and transmitting, to the base station, feedback information for the downlink signal when performing the harq process operation for the downlink signal is determined.
provided is a method for decoding a video signal. the method includes generating a first prediction sample by performing intra prediction on a current block, determining an intra prediction pattern of a current block, partitioning the current block into a plurality of sub-blocks based on the determined intra prediction pattern, generating a first prediction sample for a sub-block by performing intra prediction, determining an offset for the sub-block to obtain a second prediction sample, and generating the second prediction sample for the sub-block by using the first prediction sample and the offset.
an image decoding method according to the present invention comprises: a step of acquiring an initial motion vector of a current block; a step of deriving a refined motion vector for each of a plurality of search points on the basis of the initial motion vector; and a step of acquiring a motion vector of the current block on the basis of the refined motion vector of any one of the plurality of search points.
disclosed is a terminal and a base station for communicating each other by using a non-terrestrial network (ntn). a method of a terminal may include the steps of receiving, from a base station, configuration information for cell changing or beam failure recovery, determining, by using the configuration information, whether a trigger condition for cell changing or beam failure recovery is satisfied, and performing a cell changing or beam failure recovery operation when the trigger condition is satisfied; and an apparatus.
a spatial image projection device includes a housing, a display unit that is accommodated in the housing and configured to output a hologram image, a half-mirror configured to project a spatial image corresponding to the hologram image inside the housing, and a first polarizing film that is disposed outside the housing and configured to block a part of light directed toward a viewer from the housing.
provided are apparatus and method for processing mbs data. the method for receiving multicast/broadcast service (mbs) by a user equipment (ue) may include, when handover is determined, receiving, through a source base station, radio bearer configuration information for receiving mbs session data through a target base station, configuring a radio bearer for receiving the mbs session data through the target base station based on the radio bearer configuration information, and receiving the mbs session data through the radio bearer. the radio bearer configuration information is information generated by the target base station and transmitted to the source base station.
a method for decoding a video according to the present invention may comprise: determining an intra prediction mode of a current block, deriving reference samples from neighboring samples of the current block, obtaining a first prediction sample for the current block, based on the intra prediction mode and the reference samples, determining an offset for the first prediction sample, and obtaining a second prediction sample by applying the offset to the first prediction sample.
provided are a method of a base station for controlling transmission and reception of data through a network slice. the method includes: receiving network slice request information from a terminal in which a network slice is configured; controlling so as to deliver the network slice request information to a core network entity; and receiving, from the core network entity, specific network slice information configured on the basis of the network slice request information.
provided is a method for scheduling an uplink control channel (pucch) in a next generation/5g wireless access network. the method of a terminal for scheduling a pucch may include: receiving, from a base station, timing relationship setting information between a downlink data channel (pdsch) and a pucch; and scheduling the pucch on the basis of the timing relationship setting information.
a method for decoding a video according to the present invention may comprise: determining a first prediction mode for a first sub-block in a current block and a second intra prediction mode for a second sub-block, performing a first prediction for the first sub-block based on the first intra prediction mode, performing a second prediction for the second sub-block based on the second intra prediction mode, and obtaining a prediction sample of the current block according to a result of the first prediction and the second prediction.
a method for decoding a video according to the present invention may comprise: decoding information indicating whether a non-zero transform coefficient exists in a current block, when the information indicates that the non-zero transform coefficient exists in the current block, determining a scanning order of the current block, and decoding a transform coefficient included in the current block according to the determined scanning order.
provided are a quantum key distribution method, device, and system. the quantum key distribution system may include a transmitter configured to split an optical signal into a first optical signal passing through a first path (p 1 ) and a second optical signal passing through a second path (p 2 ), which is longer than the first path (p 1 ), and to sequentially transmit the first optical signal and the second optical signal; and a receiver configured to receive the first optical signal and the second optical signal incident through a quantum channel and transmit the first optical signal and the second optical signal back to the transmitter through the quantum channel after passing through a polarization-dependent element, being reflected by a faraday mirror, and passing through the polarization-dependent element again.
provided is a method of a terminal for performing communication by using a non-terrestrial network (ntn). the method may include receiving, from a base station, harq operation activation indication information for indicating whether to activate an harq operation; configuring a harq process based on the harq operation enabling indication information; and identifying and controlling harq operations for a downlink signal according to whether the harq process configured whether to enable or disable the harq operation.
provided is s a method for a base station to allocate a time interval resource to transceive a downlink data channel (pdsch) or an uplink data channel (pusch). the method include allocating a time interval resource for each ofdm symbol on the basis of a slot or a mini-slot, transmitting, to a terminal, time interval resource configuration information including ofdm symbol allocation data for ofdm symbols used for data channel transception in the slot or the mini-slot, and transmitting, to the terminal, control information selecting one of the symbol allocation data included in the time interval resource configuration information.
a method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block, generating a merge candidate list for the current block based on the spatial merge candidate, obtaining motion information for the current block based on the merge candidate list, and performing motion compensation for the current block using the motion information. herein, if the current block does not have a pre-defined shape or does not have a size equal to or greater than a pre-defined size, the spatial merge candidate of the current block is derived based on a block having the pre-defined shape or having a size equal to or greater than the pre-defined size, the block comprising the current block.
a video encoding/decoding method and device according to the present invention may comprise: configuring a palette table for a palette mode of a current block; determining per-pixel palette indices of the current block; and predicting pixels of the current block on the basis of the palette table and the palette indices.
a method for processing a video according to the present invention may comprise: generating a plurality of most probable mode (mpm) candidates; determining whether there is an mpm candidate identical to an intra-prediction mode of a current block among the plurality of mpm candidates; obtaining the intra-prediction mode of the current block, based on a result of the determining; and performing an intra-prediction for the current block, based on the intra-prediction mode of the current block.
provided are a method and a device for transmitting and receiving uplink control information the method may include: receiving configuration information about a plurality of pucch resources allocated to the transmission of a plurality of ucis in one slot; determining one pucch resource from among the plurality of pucch resources on the basis of the priority level of each of the plurality of ucis; and multiplexing the plurality of ucis with the one pucch resource and transmitting same.
provided are a single photon detector and an operation method thereof. the single photon detector may include a gate signal generator for generating a gate signal having a first pulse width (δp) with respect to a first time point (t 1 ); and a first photon detector for detecting the single photon while operating in a geiger mode by receiving the gate signal, and outputs a photon detection signal at a second time point (t 2 ), wherein the first photon detector outputs the photon detection signal at the second time point (t 2 ) spaced apart at a predetermine time interval (δt) from the first time point (t 1 ).
provided is a method for a base station executing a multi-beam-based random access procedure in wireless communication, and a device therefor. the method may include: transmitting information associated with a rach resource to a terminal; receiving a multi-rach preamble from the terminal by a multi-beam; and transmitting a random access response to the terminal.
a method for decoding a video according to the present invention may comprise: deriving a plurality of reference sample lines for a current block, selecting at least two among the plurality of reference sample lines, and performing intra prediction for the current block based on the selected reference sample lines.
methods and apparatuses are provided for transmitting/receiving a reference signal for sidelink channel state information acquisition. in particular, a method of a transmitter ue is provided for transmitting a reference signal in order to acquire sidelink channel state information. the method may include: receiving enabling information of sidelink channel state information (csi) reporting, determining whether to transmit a sidelink channel state information reference signal (sl csi-rs) based on the enabling information of the csi reporting, and transmitting the sl csi-rs within a resource assigned for physical sidelink shared channel (pssch) transmission to the a receiver ue.
an image decoding method according to the present invention comprises the steps of: deriving at least one merge candidate on the basis of at least one of a spatial neighboring block and a temporal neighboring block of a current block; generating a merge candidate list including the merge candidate; acquiring lx direction motion information of the current block, from a first merge candidate included in the merge candidate list; acquiring l(1-x) direction motion information of the current block, from a second merge candidate different from the first merge candidate; and performing inter-prediction on the basis of the lx direction motion information and the l(1-x) direction motion information.
the present invention is related to processing a video signal. a method for decoding a video according to the present invention may comprise checking a merge coding unit which is generated by merging a plurality of coding units neighboring each other based on an encoded syntax element, and decoding the checked merge coding unit, wherein a same motion vector is shared in the merge coding unit.
an image decoding method according to the present invention can comprise the steps of: acquiring residual coefficients of a current block; dequantizing the residual coefficients; performing secondary inverse transformation on the dequantized residual coefficients; and performing primary inverse transformation on the performance result of the secondary inverse transformation. the secondary inverse transformation can be performed for a partial region of the current block.
according to the present invention, there is provided a method of decoding an image, the method including: partitioning a current block into multiple sub-blocks; performing intra prediction on a first sub-block among the multiple sub-blocks by using a first sub reference sample line; and performing intra prediction on a second sub-block among the multiple sub-blocks by using a second sub reference sample line. herein, an intra prediction mode of the first sub-block and an intra prediction mode of the second sub-block are the same.
provided are a configuration method and a transmission method of a new reference signal for frequency offset estimation in a novel wireless communication system. the method may include configuring a synchronization signal to be transmitted through a first bandwidth part of one or more bandwidth parts configured by dividing an entire bandwidth into one or more parts, allocating the one or more reference signals for estimating the frequency offset on one or more resources other than a resource for configuring the synchronization signal, and transmitting the one or more reference signals for estimating the frequency offset.
a method for decoding a video according to the present invention may comprise: decoding partition information indicating whether a current coding block is to be divided by a partitioning line in a vertical direction or a partitioning line in a horizontal direction, and dividing the coding block into at least one sub-block based on the partition information.
provided are methods and apparatus for transmitting an uplink data channel in a next-generation/5g radio access network. the method of a ue may include receiving first resource assignment information on a first ul data channel and second assignment information on a second ul data channel from a base station, and preferentially assigning transmission power to one of the first and second ul data channels and adjusting the transmission power for the other when the first and second ul data channels are need to e transmitted by at least partially overlapping with each other in a time domain based on the first and second resource assignment information.
a method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block, generating a merge candidate list for the current block based on the spatial merge candidate, obtaining motion information for the current block based on the merge candidate list, and performing motion compensation for the current block based on the motion information. herein, if the current block does not have a pre-defined shape or a size equal to or greater than a pre-defined size, the spatial merge candidate of the current block may be derived based on a block which have the pre-defined shape or a size equal to or greater than the pre-defined size, the block including the current block.
according to the present invention, there is provided a method of decoding an image, the method including: determining whether a non-zero residual coefficient is included in a current block; and decoding residual coefficients included in the current block according to a scanning order of the current block, when it is determined that the non-zero residual coefficient is included in the current block. herein, an absolute value of the residual coefficient of which a scanning index is greater than a residual coefficient adjustment index is equal to or less than a residual coefficient adjustment reference value.
an image decoding method according to the present invention comprises the steps of: deriving most probable mode (mpm) candidates on the basis of an intra-prediction mode of candidate blocks; determining whether the mpm candidate having the intra-prediction mode, which is the same as that of a current block, exists among mpm candidates; and deriving the intra-prediction mode of the current block on the basis of the determination, wherein the candidate block includes a neighboring block which is adjacent to the current block, and a non-neighboring block which is not adjacent to the current block.
provided are a method and a device for enabling harq feedback information to be transmitted in response to the reception of a downlink data channel in the unlicensed band. the method may include: receiving downlink control information including resource allocation information for a downlink data channel (pdsch) in an unlicensed band; receiving harq timing indication information for transmitting harq feedback information in the unlicensed band; and transmitting the harq feedback information in the unlicensed band according to the harq timing indication information.
provided are a method for monitoring, transmitting, and receiving downlink pre-emption indication information in a next-generation/5g radio access network. the method may include receiving monitoring configuration information for downlink pre-emption indication information from a base station; receiving configuration information on a control resource set (coreset) for receiving the downlink pre-emption indication information from the base station; configuring reference downlink resources based on the configuration information on a control resource set; and monitoring the downlink pre-emption indication information for the reference downlink resources.
provided are a method and a device for performing a ue-based handover in a next generation wireless access network. the method of a ue may include receiving, from a source base station, an upper layer signaling including information on ue-based handover command and information on conditions for handover execution; storing a target cell configuration by using the information on conditions for handover execution; and determining whether to perform a handover procedure to a target cell, by determining whether predetermined conditions for handover are satisfied.
a method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block from at least one of a first spatial neighboring block adjacent to the current block or a second spatial neighboring block adjacent to the first spatial neighboring block, generating a merge candidate list including the spatial merge candidate, and performing a motion compensation for the current block by using the merge candidate list.
a method for decoding an image according to the present invention comprises the steps of: deriving an intra prediction mode of a current block; and changing the intra prediction mode to a wide angle intra prediction mode when the intra prediction mode is less than or equal to a threshold value and the current block is a non-square having a width greater than a height.
provided are methods and devices for performing positioning in a next-generation wireless network. the method of a ue for performing positioning include identifying configuration information for a transmission bandwidth of a positioning reference signal (prs) configured per cell and receiving the positioning reference signal corresponding to each cell based on the configuration information for the transmission bandwidth.
provided are a method and an apparatus for configuring a sidelink radio bearer on a sidelink interface used for vehicle communication and processing radio link failure. the method may include receiving sidelink radio bearer configuration information for configuring a sidelink radio bearer on a sidelink interface used for the vehicle communication from a base station; configuring the sidelink radio bearer based on the sidelink radio bearer configuration information, and transmitting the sidelink radio bearer configuration information to another ue subject to the vehicle communication; detecting a sidelink radio link failure when an acknowledged mode (am) radio link control (rlc) entity linked to the sidelink radio bearer reaches a maximum number of retransmissions; and indicating the detection of the sidelink radio link failure to a higher layer regardless of a radio resource control (rrc) state of the ue when the sidelink radio link failure is detected.
provided are a terminal and a network node and method thereof for performing communication in a non-terrestrial network. the method includes receiving system information including reference round trip delay offset information of a non-terrestrial network cell, performing a random access procedure in the non-terrestrial network cell; receiving configuration information for performing communication using the non-terrestrial network cell, and controlling a discontinuous reception (drx) operation on the basis of the configuration information.
provided are methods and apparatuses of processing data in an integrated access and backhaul (iab) node using new radio (nr) wireless communication technology. the method of an integrated access and backhaul (iab) node processes data, includes: configuring a mobile-termination (mt) function and a distribute unit function of the iab node; monitoring an uplink buffer state or a downlink buffer state in the iab node; and transmitting downlink buffer state information or uplink buffer state information to the donor base station or an associated parent iab node on the basis of a monitoring result of the uplink buffer state or the downlink buffer state.
disclosed is a technique for enabling a terminal and a base station to communicate through a non-terrestrial network. a method of a terminal for communicating through a non-terrestrial network (ntn) includes the steps of: receiving, from a base station, configuration information for controlling cell measurement or cell measurement reporting in the ntn; determining whether to perform cell measurement or cell measurement reporting by using the configuration information; and controlling a cell measurement or cell measurement reporting operation according to the determination result.
provided is s a method for a base station to allocate a time interval resource to transceive a downlink data channel (pdsch) or an uplink data channel (pusch). the method include allocating a time interval resource for each ofdm symbol on the basis of a slot or a mini-slot, transmitting, to a terminal, time interval resource configuration information including ofdm symbol allocation data for ofdm symbols used for data channel transception in the slot or the mini-slot, and transmitting, to the terminal, control information selecting one of the symbol allocation data included in the time interval resource configuration information.
an image decoding method according to the present invention may comprise the steps of: deriving a merge candidate from a candidate block; generating a first merge candidate list including the merge candidate; specifying any one of a plurality of merge candidates included in the first merge candidate list; deriving affine vectors of a current block on the basis of motion information of the specified merge candidate; deriving a motion vector of a sub-block in the current block on the basis of the affine vectors; and performing motion compensation on the sub-block on the basis of the motion vector.
an image decoding method according to the present invention can comprise the steps of: deriving merge candidates from neighboring blocks adjacent to a current block; generating a merge candidate list including the merge candidates, wherein the arrangement order of the merge candidates in the merge candidate list is determined on the basis of initial priorities; re-arranging the merge candidates included in the merge candidate list; decoding information for specifying at least one of the merge candidates included in the merge candidate list; and deriving motion information of the current block from a merge candidate corresponding to the information.
a method for decoding a video according to the present invention may comprise: generating a first prediction block for a current block based on a first prediction mode, generating a second prediction block for a current block based on a second prediction mode, and generating a final prediction block of the current block based on the first prediction block and the second prediction block.
a method and system for line fault detection, and a network control system are provided. a line fault detection method of a line fault detection system operated by at least one processor comprises generating a network device vector for each node, whose elements are network devices included in each node connected to both ends of a line, when a fault alarm occurs, setting an element corresponding to the network device in which the fault alarm occurs among the elements of the network device vector as a communication state according to the fault alarm, and determining whether a fault occurred in the line and the network device where the fault occurred based on the communication state set in the network device vector.
provided is a method for a user equipment to duplicately receive an identical control messages. the method includes duplicately receiving identical control messages from a base station and processing the duplicately received identical control messages by mapping same to mutually different logical channels, by using identification information or an identification entity for identifying and processing the duplicately received identical control message.
a method for decoding a video according to the present invention may comprise: determining whether to divide a current block with quad tree partitioning, and dividing the current block into four partitions based on a vertical line and a horizontal line when it is determined that the current block is divided with the quad tree partitioning.
provided is a method of transmitting a tracking reference signal (trs) in a next-generation/5g radio access network, and for transmitting the trs by a base station to a user equipment. the method may include configuring a resource element shift value k for mapping a frequency domain resource of a trs to a user equipment, transmitting the k value to the user equipment, and transmitting the trs mapped to the frequency domain resource based on the k value to the user equipment.
an access control technology in a next generation mobile communication network is disclosed. more specifically, disclosed is a technology for controlling an access control operation of a terminal through an integrated category by various methods and layers. one embodiment provides a method by which a terminal performs integrated access control, comprising the steps of: receiving, from a base station, system information including information for access control; indicating access category information from an nas layer to an as layer of the terminal when an access attempt is triggered; confirming whether access barring parameter information is included in the system information; and controlling an access barring check operation in the as layer by using at least one of the access category information and the access barring parameter information.
