KT CORPORATION

Provided is a method performed by a base station or a user equipment for satisfying requirement of the different usage scenarios from each other in a next-generation/5G radio access network which has been discussed in the 3rd generation partnership project (3GPP),. In particular, methods performed by a base station and a user equipment in a wireless communication system are disclosed. The base station method includes configuring a first user equipment with a first numerology and a first bandwidth part, and configuring a second user equipment with a second numerology different from the first numerology. A number k of consecutive orthogonal frequency division multiplexing (OFDM) symbols is calculated based on at least one of subcarrier spacing, numerology index, or processing latency of the first user equipment. The k consecutive OFDM symbols within a slot of the first bandwidth part are allocated to the second user equipment, and preemption indication information indicating the k consecutive OFDM symbols and a timing offset is transmitted to the first user equipment. The user equipment method includes receiving configuration information and the preemption indication information, determining a preemption window based on the timing offset, and suspending transmission or reception during the k consecutive OFDM symbols while maintaining synchronization for remaining symbols of the slot.

Provided are a method and apparatus for providing a network switching service to a user equipment. A method of a network apparatus for enabling a user equipment to switch a communication network between a public network and a private network by communicating with a subscriber apparatus, where the subscriber apparatus stores subscribed Network Slice Selection Assistance Information (NSSAI) of the user equipment and a network selection discriminator (NSD) at a subscriber profile, the network selection discriminator (NSD) indicates a network selected by the user equipment, the method may include receiving a registration request from the user equipment and transmitting a slice selection subscription data request to the subscriber apparatus; receiving the subscribed NSSAI from the subscriber apparatus, wherein as the subscribed NSSSAI, subscribed single (S)-NSSAI with at least one value is received; transmitting a registration response including allowed S-NSSAI based on the received subscribed S-NSSAI; and receiving a session establishment request including the allowed S-NSSAI from the user equipment and creating a session to one of the public network and the private network according to the allowed S-NSSAI included in the session establishment request.

Provided are a method and device for transmitting/receiving multicast/broadcast service (MBS) data in an NR radio access network. The method of UE for receiving MBS data may include receiving, from a base station, configuration information for receiving MBS session data; based on the configuration information, configuring a MBS radio bearer for receiving the MBS session data; and receiving a MAC protocol data unit (PDU) in which two or more mutually different logical channels associated with the same group-radio network temporary identifier (G-RNTI) are multiplexed.

A video decoding method includes generating a prediction information merge list for a current block, selecting one of prediction information merge candidates included in the prediction information merge list on the basis of index information, and obtaining a prediction block for the current block on the basis of prediction information on the selected prediction information merge candidate.

A video encoding/decoding method and device disclosed herein determine the current block through block division based on a tree structure and sub-sample the current block to form one or more sub-blocks from the current block, and can encode/decode the sub-blocks belonging to the current block according to a prescribed scan order.

A video encoding/decoding method and apparatus according to the present disclosure may: determine a current block via tree structure-based block partition; determine an intra prediction mode of the current block on the basis of an MPM list of the current block; derive a reference pixel for intra prediction of the current block; and carry out intra prediction of the current block on the basis of the intra prediction mode and the reference pixel.

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.

A video encoding/decoding method according to the present disclosure may comprise the steps of: inducing a reference mode of respective neighboring blocks within a current block; and performing, on the basis of at least one of reference modes, intra prediction on a sub-block, in the current block, that is smaller than the current block.

A method for decoding a video according to the present invention may comprise: determining candidate coding blocks available to be merged with a current coding block, selecting at least one among the candidate coding blocks, and merging the current coding block and the selected candidate coding block.

Provided are a sidelink transmitting and receiving method and a terminal therefor. The method comprising: configuring a sidelink bandwidth part; and configuring sidelink numerology for transmission/reception through a sidelink and performing the transmission/reception with another terminal through the sidelink by using, together, the configured sidelink bandwidth part.