Abstract: The disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. A method performed by a base station configured to support a time division duplex (TDD) system in a wireless communication system, according to various embodiments of the present disclosure, may comprise: transmitting, to a terminal, resource configuration information including a first cross division duplex-uplink (XDD-UL) section; determining whether a change of the first XDD-UL section is necessary; identifying a second XDD-UL section based on the determination result; transmitting, to the terminal, information about the second XDD-UL section; and receiving, from the terminal, an uplink signal on the basis of the first XDD-UL section and/or the second XDD-UL section.

Abstract: The present invention provides a medical burr comprising: a rotating unit that is formed to have a smaller diameter than a guide that extends long forward in a medical cutting instrument, and rotates while extending inside the guide; and a cutting unit formed at the tip of the rotating unit, and further comprising a guide protector that surrounds the exposed portion of the burr.

Abstract: An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).

Abstract: An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).

Abstract: An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).

Abstract: An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).

Abstract: An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).

Abstract: Provided is a method for managing terminals by a base station when a plurality of networks coexist. Specifically, in a wireless communication system where a first network coexists with a second network, the terminal management method of a base station of the first network may include: receiving coexistence information from a first network management apparatus managing the base station, and examining the coexistence information; generating time information that is needed by a user equipment attached to the first network to access a third network on the basis of the coexistence information; and sending a message containing the time information to the user equipment. Thereby, it is possible to operate WiMAX and TD-LTE simultaneously while using a CDMA network for a voice service.

Abstract: An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).

Abstract: A scroll compressor includes a rotation shaft; a first scroll and a second scroll engaged with the first scroll to form a compression chamber between the second scroll and the first scroll. The second scroll includes a key recess. The scroll compressor includes an Oldham ring having a ring portion and a key portion protruding toward the key recess, from the ring portion. The key portion is coupled to the key recess in a sliding manner such that the second scroll orbits with respect to the first scroll. The scroll compressor also includes a wear preventing member installed between the key recess and the key portion. The second scroll includes an axial direction separation prevention groove formed by recessing one surface off the key recess. The wear preventing member includes an axial direction separation prevention portion held in place by the axial direction separation prevention groove.

Abstract: An apparatus of a base station in a wireless communication system supporting time division duplex (TDD) and a method thereof are provided. The apparatus includes at least one transceiver, and at least one processor operatively connected with the at least one transceiver. The at least one processor may be configured to perform signaling for preventing transmission of an uplink (UL) signal in a cell, and measure a strength of a downlink (DL) signal received from at least one base station during at least one symbol in a UL subframe. The apparatus relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE).

Abstract: Provided is a method for managing terminals by a base station when a plurality of networks coexist. Specifically, in a wireless communication system where a first network coexists with a second network, the terminal management method of a base station of the first network may include: receiving coexistence information from a first network management apparatus managing the base station, and examining the coexistence information; generating time information that is needed by a user equipment attached to the first network to access a third network on the basis of the coexistence information; and sending a message containing the time information to the user equipment. Thereby, it is possible to operate WiMAX and TD-LTE simultaneously while using a CDMA network for a voice service.

Abstract: Disclosed is an apparatus and method for managing resources in a mobile communication system. The method includes classifying an overall frequency band into a plurality of segment types defined in time and frequency domains by considering a channel condition between a mobile station and the base station and a QoS level required by the mobile station, if data to be transmitted is data to be transmitted in real time, allocating the data to real-time type segments in such a manner as to satisfy a minimum QoS level for the data, and when there are real-time data remaining after allocating the data, and non-real-time type segments for allocating data to be transmitted in non-real time, diverting and allocating the real-time data to the non-real-time type segments.

Abstract: In retransmitting data at high speed by a PHY layer in a mobile communication system, when data to be transmitted to the receiver is received from the MAC layer of the transmitter, the PHY layer of the transmitter transmits the data to the PHY layer of the receiver, receives first information representing normal reception or abnormal reception of the data from the PHY layer of the receiver, notifies the MAC layer of the transmitter of the normal reception of the data when the first information represents the normal reception, and retransmits the data to the PHY layer of the receiver when the first information represents the abnormal reception.

Abstract: Disclosed is an apparatus and method for managing resources in a mobile communication system. The method includes classifying an overall frequency band into a plurality of segment types defined in time and frequency domains by considering a channel condition between a mobile station and the base station and a QoS level required by the mobile station, if data to be transmitted is data to be transmitted in real time, allocating the data to real-time type segments in such a manner as to satisfy a minimum QoS level for the data, and when there are real-time data remaining after allocating the data, and non-real-time type segments for allocating data to be transmitted in non-real time, diverting and allocating the real-time data to the non-real-time type segments.

Abstract: In retransmitting data at high speed by a PHY layer in a mobile communication system, when data to be transmitted to the receiver is received from the MAC layer of the transmitter, the PHY layer of the transmitter transmits the data to the PHY layer of the receiver, receives first information representing normal reception or abnormal reception of the data from the PHY layer of the receiver, notifies the MAC layer of the transmitter of the normal reception of the data when the first information represents the normal reception, and retransmits the data to the PHY layer of the receiver when the first information represents the abnormal reception.

Abstract: In retransmitting data by a transmitter in a mobile communication system, a transmitter sets an allowed number-of-transmissions Ctx for an initial transmission and a retransmission of a second data unit based on a first data unit, fragments the first data unit into N second data units, and then initially-transmits or retransmits the N second data units to the receiver within the allowed number-of-transmissions Ctx. The receiver receives the second data units, detects normal receipt or abnormal receipt of the received second data units, and transmits a response to the transmitter according to the detection result.

Abstract: A manufacturing method of GaAs metal semiconductor FET is disclosed.

Abstract: There is disclosed a manufacturing method of self-aligned GaAs FET using refractory gate with dual structure, the manufacturing method of the invention comprising the steps of: forming first photoresist pattern on a GaAs substrate to define an active region and ion-implanting n type impurity in the active region of the GaAs substrate; sequentially depositing a nitrogen-containing silicon layer and a metal layer on the substrate after removal of the first photoresist pattern; forming second photoresist pattern on the metal layer to define a gate; removing the silicon and metal layers using the second photoresist pattern as a gate mask to form the gate with dual structure of the silicon and metal layers; forming third photoresist pattern on the substrate to define source/drain regions after removal of the second photoresist pattern, and ion-implanting high-density impurity in the source/drain regions using the third photoresist pattern and the gate as a source/drain mask; annealing the substrate to make the sil