Abstract: Provided is a method and apparatus for multi-antenna transmission to minimize a charging time of users in a wireless powered communication network. A power transmission apparatus may be configured to generate a covariance matrix to minimize a charging time of the power reception apparatus based on an amount of energy required by at least one power reception apparatus; to derive a beamforming vector using the covariance matrix; and to transmit a wireless power to the power reception apparatus based on the beamforming vector.

Abstract: Disclosed herein are an apparatus and method for interfacing with common memory. The apparatus for interfacing with common memory includes a computer-input/output (I/O)-interface-protocol-processing unit for receiving a packet for accessing common memory from a computer; a direct memory access unit for transforming the packet into an instruction for performing any one of reading from and writing to the common memory; and a common memory interface unit for transmitting the instruction to the common memory and receiving information about whether execution of the instruction is completed from the common memory.

Abstract: In a carrier aggregation system and a transmission method and apparatus based on cached information in the carrier aggregation system, the transmitter may be configured to configure multicast message sets corresponding to a plurality of carriers, respectively, based on at least one file to be received by each of receivers allocated to the carriers, respectively, and to allocate the multicast message sets to the carriers and transmitting the multicast message sets through the carriers.

Abstract: Disclosure is a BS apparatus and a method of transmitting a data packet capable of supporting smooth transmission of a data packet by defining a new fronthaul interface considering a structure of expanding/designing processing functions of a radio module of a 5G split BS including not only an RF processing function but also a processing function on a higher layer.

Abstract: Embodiments of an eNB to operate in accordance with a coverage enhancement mode are disclosed herein. The eNB may comprise hardware processing circuitry to, during a legacy sub-frame, transmit a system information block (SIB) in legacy SIB frequency resources according to a legacy SIB transmission format and refrain from transmission of channel state information reference signals (CSI-RS). The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first portion of the SIB in first SIB frequency resources included in the legacy SIB frequency resources. The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first set of CSI-RS in first CSI-RS frequency resources that include at least a portion of the legacy SIB frequency resources.

Abstract: The present invention discloses a torque converter for a vehicle in which the number of components is reduced and stability is improved in a long-travel torsional damper structure having springs that operate at two stages. The torque converter for a vehicle according to the present invention includes a front cover, an impeller, a turbine, a reactor, a lock-up clutch, and a torsional damper, and the lock-up clutch includes a clutch drum which is coupled to the front cover, multiple first friction plates which are coupled to the clutch drum, second friction plates which are disposed between the multiple first friction plates, and a retaining plate which has an extending drum portion to which the second friction plate are coupled and supports springs provided on the torsional damper.

Abstract: Disclosed herein is an apparatus for supporting setting of a network routing path, which includes a sub-cast list management unit for managing a sub-cast list that contains information about one or more other apparatuses for supporting setting of a network routing path with which the apparatus establishes a network session; a session management unit for simultaneously transmitting a SYNC message to at least some of the apparatuses included in the sub-cast list and establishing a network session with one of the apparatuses included in the sub-cast list in consideration of responses to the SYNC message; and a communication unit for transmitting data via the established network session.

Abstract: Disclosed are a multi-antenna system and a transmission and method based on index coding and beamforming thereof. A transmitter including a plurality of antennas may be configured to classify a plurality of receivers into at least one group, determine an index code for the group, design a beamforming matrix for the group, and transmit at least one of a plurality of files to the group through the antennas based on the index code and the beamforming matrix.

Abstract: Disclosed herein are a method and apparatus for virtual desktop service. The apparatus includes a connection manager configured to perform an assignment task of assigning a virtual machine to a user terminal using virtual desktop service, a resource pool configured to allocate software resources to a virtual desktop, wherein the software resources include an OS, applications, and user profiles, and a virtual machine infrastructure configured to support hardware resources including a CPU and a memory, wherein the connection manager is configured to perform a coordination task of coordinating a delivery protocol used between the user terminal and servers that provide the virtual desktop service, wherein the resource pool has a management function, wherein the management function is based on usage pattern information about a user's average usage of resources, and wherein the management function uses a physical distance on network from the user terminal to a server.

Abstract: A method includes generating preference information according to each of a plurality of base stations including at least one adjacent base station and transmitting the generated preference information to a serving base station, receiving, from the serving base station, information related to beams of the serving base station and the at least one adjacent base station determined based on the preference information, and receiving a signal by using the information related to the beams, wherein the information related to the beams includes beam information on a partial area in which interference signals transmitted by the at least one adjacent base station are aligned among a whole reception area of the terminal. A serving base station includes a controller configured to configure beams for a partial area in which interference signals transmitted by the at least one adjacent base station are aligned among a whole reception area of the terminal.

Abstract: Provided is a substrate processing method capable of preventing over-etching of a part of a stair-case structure due to an etching solution, when a barrier layer is selectively formed on a VNAND device having the stair-case structure. The substrate processing method includes: alternately stacking a first insulating layer and a second insulating layer; forming a stepped structure having an upper surface, a lower surface, and a side surface connecting the upper surface to the lower surface by etching the first insulating layer and the second insulating layer that are stacked; densifying the stepped structure; forming a barrier layer on the densified second insulating layer; and performing isotropic etching on at least a part of a sacrificial word line structure including the second insulating layer and the barrier layer. During etching the barrier layer at the isotropic etching step, the second insulating layer is not etched or etched a little to an ignorable degree.

Abstract: A method, apparatus, and system for paying are provided. The method for paying of an electronic device includes: receiving item order information from a POS terminal; determining a payment method by considering at least one of a discount benefit and a reward point saving benefit based on the received item order information; and requesting a payment approval for the item order information in the determined payment method.

Abstract: Provided is a method and apparatus for multi-antenna transmission to minimize a charging time of users in a wireless powered communication network. A power transmission apparatus may be configured to generate a covariance matrix to minimize a charging time of the power reception apparatus based on an amount of energy required by at least one power reception apparatus; to derive a beamforming vector using the covariance matrix; and to transmit a wireless power to the power reception apparatus based on the beamforming vector.

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting a content using a cache memory, and a method for transmitting, by a relay node, a content using a cache memory according to the present invention may comprise the steps of: storing a first content, received from a serving cell, in the cache memory; storing a second content, received from an adjacent cell or the serving cell, in the cache memory; selecting a content to be transmitted to a user equipment (UE) from among the first content requested by the UE and the second content which acts as interference to the first content; and transmitting the second content to the UE.

Abstract: A method of processing a substrate by omitting a photolithographic process is disclosed. The method includes forming at least one layer on a stepped structure having an upper surface, a lower surface, and a side surface that connects the upper surface to the lower surface, selectively densifying portions of the at least one layer respectively on the upper surface and the lower surface via asymmetric plasma application, and performing an isotropic etching process on the at least one layer. During the isotropic etching process, the portion of the at least one layer formed on the upper surface is separated from the portion of the at least one layer formed on the lower surface.

Abstract: A method of processing a substrate by omitting a photolithographic process is disclosed. The method includes forming at least one layer on a stepped structure having an upper surface, a lower surface, and a side surface that connects the upper surface to the lower surface, selectively densifying portions of the at least one layer respectively on the upper surface and the lower surface via asymmetric plasma application, and performing an isotropic etching process on the at least one layer. During the isotropic etching process, the portion of the at least one layer formed on the upper surface is separated from the portion of the at least one layer formed on the lower surface.