Abstract:
본 발명은 여러 개의 케리어 콤포넌트(CC)를 통해 자원을 전송 및 수신하는 다중 케리어 통신 시스템에 관한 것이다. 이를 위해, 단말이 CC별 PDSCH 자원 영역의 링크 품질과 PDCCH 자원 영역의 링크 품질을 측정하는 과정과 단말이 측정된 링크 품질 관련 정보를 기지국에게 피드백하는 과정과 기지국이 피드백정보를 이용하여 적응적으로 제어 정보 전송 CC SET(PDCCH CC SET)과 데이터 정보 전송 CC SET(DL CC SET)을 선택하는 과정을 포함한다.
Abstract:
PURPOSE: A CSI-RS transceiving method and device thereof are provided to transmit CSI-RS of a relay station and CSI-RS of a base station to a different sub frame. CONSTITUTION: A control device(716) selects at least one sub frame among downlink sub frames which is not used as a MBSFN sub frame. An insertion unit(718) inserts an CSI-RS to the selected downlink sub frame. A transmission unit transmits the sub frame in which the CSI-RS is inserted. A control unit obtains information about the downlink sub frame which is not sued as a MBSFN sub frame through system information. An extracting unit extracts a CSI-RS from a sub frame which is not used as the MBSFN sub frame according to the control of the control unit.
Abstract:
본 발명은 무선 통신 시스템에서 다중 경로를 통해 전송되는 신호를 수신하기 위한 장치 및 방법에 관한 것으로 특히 직접시퀀스 부호분할 다중접속 시스템에서 유효한 다중 경로 신호의 위치를 검출하기 위해 기저 대역 펄스 정형 필터의 리플에 의하여 검출되는 위장 경로(Fake path)를 검출하기 위한 장치 및 방법에 대한 것이다. 본 발명에 따라 이동 통신 시스템의 수신기에서 위장 경로를 검출하기 위한 방법은, 기지국으로부터 수신된 신호들의 피크들에 대한 피크 인덱스들과 피크 에너지들을 검출하는 제1 과정과, 상기 피크 인덱스들과 상기 피크 에너지들을 근거로 상기 피크들에 대해 위장 경로 검사를 수행하는 제2 과정과, 상기 위장 경로 검사결과 위장 경로로 판단되지 않은 피크들에 대해서 핑거를 할당하는 제3 과정을 포함한다. DSSS, FHSS, 레이크 수신기, 펄스 정형 필터
Abstract:
이동통신 시스템의 기지국의 신호 송신방법이, 송신신호를 발생하는 과정과, 상기 송신신호를 오버랩되지 않는 미리 설정된 시간 구간에서 오버랩 없이 적어도 두개의 RF송신기들에 스위칭 출력하는 과정과, 송신신호를 각 RF송신기들의 RF신호들로 변환하는 과정과, RF신호들을 각 안테나를 통해 송신하는 과정으로 이루어진다. 그리고 이동통신 시스템의 단말기의 신호 수신방법이, 수신신호에서 파일럿 채널신호를 역확산하여 위상 및 시간 예측 값을 추정하는 과정과, 적어도 두 개의 안테나를 통해 송신되는 기지국의 시간스위칭 송신 다이버시티 신호의 스위칭 주기 및 패턴에 따라 위상 예측값 및 시간 예측 값을 선택하는 과정과, 시간예측값에 따라 시간스위칭 송신 다이버시티 방식으로 송신되는 기지국의 전용채널신호를 검출하고 위상예측값에 의해 검출된 신호의 위상 에러를 정정하여 복조하는 과정으로 이루어진다.
Abstract:
PURPOSE: A time switching transmit diversity device of a mobile communication system is provided to use one quadrature code only for one of user data, so that only one signal channel receiver for demodulating user data can be configured regardless of the number of transmit antennas, thereby simplifying a receiver structure. CONSTITUTION: A signal converter(611) inputs a signal combined with coded user data and a long code. A serial/parallel converter(613) converts a serial signal outputted from signal converter(611) the into a parallel signal. A multiplier(615) mixes an even-numbered signal outputted from the serial/parallel converter(613) with a quadrature code, and outputs the mixed signal. A multiplier(617) mixes an odd-numbered signal outputted from the serial/parallel converter(613) with the quadrature code, and outputs the mixed signal. A controller(600) generates a switch control signal to distribute signals to be transmitted to plural antennas. LPFs(623,625) low pass-filter PN spread signals of an I channel and a Q channel outputted from a switch(621), and output the filtered signals. Multipliers(631,633) mix the signals outputted from the LPFs(623,625) with a carrier, and up-convert the frequencies. An adder(641) adds the signals outputted from the multipliers(631,633), and outputs the added signals to a transmit antenna(A).
Abstract:
PURPOSE: An apparatus and method for inserting extrinsic information in a communication system is provided to minimize a loss of channel codes by removing only coding symbols, without removing interleaved symbols, in the case of inserting extrinsic information into channel-coded symbols. CONSTITUTION: A coder(401), having a coding rate of M/L, codes M-bit data per a frame and generates L symbols. A puncturer(402) receives the coded symbols and punctures associated symbols according to preset rules so that channel deterioration can be minimized. The coder(401) and the puncturer(402) forms a channel coder(400). An interleaver(404) interleaves and outputs the symbols outputted from the channel coder(400). An extrinsic information generator(406) generates extrinsic information to be inserted. An insertion position selector(408) generates a selection signal to determine the location of the generated extrinsic information to be inserted into a frame. An extrinsic information inserter(410) selects either the output of the interleaver(404) or the output of the extrinsic information generator(406), and inputs the output of the insertion position selector(408) as a selection control signal. If the selection control signal is not generated, the extrinsic information inserter(410) selects the output of the interleaver(404). If the selection control signal is generated, the extrinsic information inserter(410) selects the output of the extrinsic information generator(406).
Abstract:
A base station transmitter for a CDMA communication system which includes a superframe period of a sync channel, a plurality of first sync channel frames segmented from the superframe period, the first sync channel frames each having a first period, and a plurality of second sync channel frames segmented from the first sync channel frames, the second sync channel frames each having a second period, wherein sync channel signals are transmitted through the second sync channel frames. The base station transmitter comprises a circuit for generating the sync channel signals; and a channel spreader for channel spreading a sync channel signal in a leading sync channel frame out of the second sync channel frames in said each first sync channel frame with a first orthogonal code, and channel spreading sync channel signals in the remaining sync channel frames with a second orthogonal code.
Abstract:
PURPOSE: A method of controlling voltage of a CDMA communication system and a device thereof are provided to enable a moving station to control the up-link transmission power and operate up-link transmission rate variably corresponding to the channel conditions. CONSTITUTION: In a device of controlling the power of a CDMA communication system, a detector(410) catches channel signal. fingers for Data demodulation(421-42N) demodulate received signals and produces data. A data combiner(440) combines the signal data from the fingers for Data demodulation(421-42N). A decoder(442) decode the combined data. Fingers(431-43M) measuring signal level and interference measure the signal level and interference respectively. A combiner(450) for S/N rate combines all the signal levels and the amounts of interference. A controller(460) processes the signals from the decoder(442) and the combiner(450) for S/N rate. The controller(460) produces a signal-interference rate to control the transmission power of the up-link channel of the base station using the signal level and the amount of interference. A transmitter(470) transmits the signal-interference rate of up-link processed at the controller(460).
Abstract:
PURPOSE: An apparatus and a method for designating a forward common channel spreading code in a CDMA(Code Division Multiple Access) communication system are provided to transmit packet data through a designation forward channel using a specific code when a dedicated channel is not set up in an MS(Mobile Station) and the packet data transmitted from a base station to the MS exist. CONSTITUTION: A base station transmits a control message including information for indicating a spreading code to an MS for dedicatedly designating a specific forward common channel to the MS. If a response about the control message is received, the base station transmits user data to the MS through a dedicated designation forward channel using the spreading code.
Abstract:
PURPOSE: The apparatus for performing handoff is provided to make a synchronous system base station transmit a 'PN_OFFSET' value through the first short synchronization channel, and to obtain information on peripheral cells in a shortest time, so as to reduce call cutoff times between the synchronous mobile communication system and a mobile station. CONSTITUTION: A forward pilot channel generator(103) generates a pilot signal. A forward synchronous channel generator(104) generates a synchronous signal. The first forward auxiliary synchronous channel generator(105) generates 'PN_OFFSET' information of a base station. The second forward auxiliary synchronous channel generator(106) generates a long code state signal of the base station and frame timing information. A forward DCCH(Dedicated Control Channel) generator(102) generates a control message of a DCCH. A forward dedicated fundamental channel generator(108) generates a voice signal. A forward dedicated supplementary channel generator(109) generates packet data.