Abstract:
PURPOSE: A method and an apparatus for transmitting control information in a wireless communications system are provided to transmit reliable information even in mobile channels having dynamic diversity. CONSTITUTION: A base station sets DMRS(Demodulation Reference Signal) information having the same number of set ports as a scrambling sequence which is used when an E-CCH(Enhanced Control Channel) area or a user device receives an E-CCH(1110). The base station schedules multiple user devices about each subframe(1120). The base station determines pre-coding to use in a scheduled user device according to predetermined rules(1130). The base station transmits the E-CCH to the user device(1140). [Reference numerals] (1110) Set an E-CCH area and a DMRS port number; (1120) Schedule E-CCH resources for a scheduled user device; (1130) Apply pre-coding to each REG/RE based on a predefined rule; (1140) Transmit E-CCH; (AA) Start; (BB) End
Abstract:
PURPOSE: An operating method of a multiband multicell and a device thereof are provided to allow a base station to simultaneously support terminals including respectively different bandwidths. CONSTITUTION: A first band is allocated to a pre-loader mother cell(1119,1121). The first band includes a small bandwidth which is smaller than a system band. One or more second bands are allocated to one or more pre-loader sub-cells(1131,1133). The second band is located in the other system bands except for the free loader mother cell. The second band includes a second bandwidth which is larger than the first band width and is smaller than the system band. A low power terminal which is able to receive a smaller bandwidth than the system band is provided through the pre-loader mother cell or the pre-loader sub-cell. [Reference numerals] (1101) Preparing the transmission of a pre-loader cell; (1103) Distinguishing the pre-loader cell; (1105) Mother cell; (1107) Sub-cell; (1109) Forming a downlink virtual DC; (1113) Forming a protective band and a PRB resource; (1115) Transmitting a pre-loader mother cell SIB to 0-th and fifth sub-frames in a downlink by a base station; (1117) Transmitting a paging channel for the pre-loader mother cell to fourth and ninth sub-frames in the downlink; (1119) Transmitting the scheduling control channel of a terminal to the pre-loader mother cell in the downlink; (1121) Transmitting the data channel of the terminal to the pre-loader mother cell in the downlink; (1123) Receiving a response channel and a PRACH signal in an uplink; (1125) Forming a downlink virtual DC and a gap; (1129) Forming a protective band and a PRB resource; (1131) Transmitting the scheduling control channel of the terminal to the pre-loader sub-cell in the downlink; (1133) Transmitting the data channel of the terminal to the pre-loader sub-cell in the downlink; (1135) Transmitting an SIB update indicating signal to an upper signaling if there is the SIB update of the terminal in the pre-loader sub-cell in the downlink; (AA) Start;
Abstract:
전송 모드 전이를 판단하기 위한 측정 보고 방법 및 장치를 개시한다. 전송 모드 전이 판단을 위한 측정 보고 방법은 모든 주파수 부대역들의 CQI _ difference 를 보고하는 것에 대한 임계치를 획득하는 단계; 각각의 측정 시간 구간에서 전체 주파수 대역의 각각의 CQI 보고 주파수 부대역에서의 채널 품질 지시자 값을 측정하는 단계; 각각의 CQI 보고 주파수 부대역의 CQI 측정치를 기반으로 하여 CQI _ difference 값을 결정하는 단계; 및 상기 결정된 CQI _ difference 값을 임계치와 비교하여 조건을 만족하면 UE가 상기 결정된 CQI _ difference 값을 BS에 전송하는 단계를 포함한다. 본 발명에 있어서, UE가 상기 측정 보고를 BS에 알린 후에, BS는 상기 측정 보고를 기반으로 하여 UE에 더욱 적합한 전송 모드를 선택함으로써 데이터가 더욱 효과적으로 전송되도록 할 수 있다. 전송 모드 전이, 측정 보고, CQI, 임계치, 보고 주기
Abstract:
본 발명의 공진기는, 기판, 및 기판상에 차례로 적층된 제1전극, 압전막 및 제2전극을 구비하고, 공진을 발생하는 활성영역과 공진을 발생하지 않은 비활성영역으로 구분된 공진부를 포함하며, 제1 및 제2전극 중 적어도 하나는 비활성영역 부분의 적어도 일부가 비활성영역 부분과 다른 두께를 가지도록 형성된 것을 특징으로 한다. FBAR, 공진부, 전극, 비활성영역, 금속막
Abstract:
PURPOSE: A GaN thin film structure, a manufacturing method thereof and a semiconductor device including the same are provided to reduce a manufacturing process by forming an electrode layer and a reflective film together on the lower part of an GaN thin film. CONSTITUTION: Two support members(102a,102b) are formed on a substrate(101). A first buffer layer(103) is formed on the two support members. An electrode layer(104) is formed on the first buffer layer. A second buffer layer(105) is formed on the electrode layer. A GaN thin film layer(106) is formed on the second buffer layer.
Abstract:
PURPOSE: A method and apparatus for supporting time division duplex in communication system are provided to change the rate of an uplink subframe and a down link subframe according to a system status by dynamically using a part of subframes as either an up link or a down link. CONSTITUTION: Up link data transmitted from a second transceiver is received in an nth(n-th) subframe of a first frame. Downlink data is transmitted to a second transceiver from an nth subframe of a second frame after the first frame. The nth subframe can be selectively used as either an uplink time interval or a down link time interval. The nth subframe of the second frame is activated as the down link time interval among time intervals which can be selectively used.
Abstract:
PURPOSE: A terminal and a power controlling method for random access are provided to efficiently perform power control in case a terminal performs random access when a DAS(Distributed Antenna System) is constructed based on an LTE-A system. CONSTITUTION: A receiving unit receives system information from a base station. The system information includes antenna reference transmission power information for transmitting random access preamble. A power control controlling unit(1390) controls the random access preamble transmission power by using the received antenna reference transmission power information. A transmitting unit transmits the random access preamble. The antenna reference transmission power information is channel state reference signal pattern information or a power control parameter generated based on an antenna.
Abstract:
PURPOSE: A terahertz oscillator and a manufacturing method of an electron emission source are provided to make a bent cathode in the electron emission source, thereby focusing emitted electron beam from the electron emission source in a sheet beam form. CONSTITUTION: An electron emission source(15) is formed on a first insulating layer(120). The electron emission source includes a cathode in order to emit an electron beam. An anode(16) is successively arranged on the first insulating layer along the emission direction of the electron beam. An oscillator circuit(17) converts the energy of the electron beam into the energy of an electromagnetic wave. A collector(18) collects the electron beam. An output unit(19) emits the electromagnetic wave created in the oscillator circuit to the outside. The cathode includes a first curvature part which is bent in the vertical direction of the first insulating layer. An electron emissive material layer is formed inside of the first curvature part.
Abstract:
본 발명은 시분할 듀플렉싱 방식을 이용하는 부호분할 다중 접속 방법 이동통신시스템에서 향상된 상향 전송 방식에 따라 복합 재전송 방식을 사용하여 상기 상향 데이터의 재전송 여부를 하향 공통 채널을 통해 전송하는 방법을 제공하는 것으로서, 본 발명에서 제공하는 시분할 듀플렉싱(TDD) 이동통신 시스템에서 상향링크 패킷 데이터의 긍정적/부정적 인지 신호(ACK/NACK)를 전송하는 방법은 할당된 타임슬랏과 할당된 채널코드로 정해지는 코드 채널을 통해 상향링크 패킷 데이터를 수신하는 과정과, 상기 상향링크 패킷 데이터의 에러 유무를 나타내는 ACK/NACK 정보를 생성하는 과정과, 하향 공통 채널의 상기 코드 채널에 대응하는 전송위치에서 상기 ACK/NACK 정보를 전송하는 과정을 포함한다. ACK/NACK, HARQ, Downlink common channel, TDD
Abstract:
PURPOSE: A communication method using a code book in an MIMO system and a device therefor are provided to map each code word in two different antennas, thereby obtaining a transmission diversity effect on a channel. CONSTITUTION: A mapper(204) maps a plurality of code words on a plurality of layers. A serial/parallel converting device(203) partitions one inputted codeword in parallel. The serial/parallel converting device maps the code words on two layers. A precoder(212) maps the code word on each antenna by a layer. A power assignment controller(213) makes power assigned to each layer equal.