Abstract:
PURPOSE: A siloxane resin composition for LED encapsulants is provided to ensure excellent light transmissivity, light resistance, heat resistance, refractivity, and mechanical strength using a siloxane-based hybrid resin. CONSTITUTION: A siloxane resin composition for LED encapsulants comprises 9~90 weight% of a siloxane-based hybrid resin, 10~90 weight% of an organic silicon hydroxide compound containing two or more silicon-bonded hydrogens; and 0.01~1 weight% of a metallic catalyst. The siloxane-based hybrid resin is prepared through the non-hydrolysis polycondensation of organic alkoxysilanes including vinyl groups with organic silane diols in an equivalence ratio of 1~1.5.
Abstract:
본 발명에 따른 이동 통신 시스템에서의 트래픽 처리 장치는, 단말들의 위치 및 요청 서비스에 의거하여 각 단말에 대해 동작 모드를 설정하고, 운영 모드 설정부에서 설정된 동작 모드를 토대로 각 단말의 트래픽 요청을 스케쥴링 방법 또는 가상 전용 채널 할당 방법으로 처리한다는 것으로, 이를 통해 자원의 효율성을 극대화시킬 수 있을 뿐만 아니라 하나의 무선 링크를 통해 서로 다른 방식으로 서비스되는 데이터를 전송할 수 있다. 채널, 할당, 트래픽, WCDMA, OCHM, OFCHM, ORHM, 스케쥴링
Abstract:
An apparatus and a method for downlink channel environment prediction using a feedback signal in a wireless mobile communication system are provided to grasp and predict changes of radio channel states of a user by using channel state information fed back from the second communication station and minimize the amount of feedback signals for prediction of channel states, thereby reducing power consumption of the second communication station. The first communication station(base station)(400) comprises a channel state transition table managing device(430), a channel state prediction device(440) and an antenna signal generator(450). The second communication station(terminal)(500) comprises the followings: N number of receiving antennas(510,520); a channel estimator(530) for estimating a radio channel by measuring different pilot signals received from each transmission antenna(410,420) of the first communication station(400); and a sampling and quantizing device(540) for performing sampling and quantizing processes in order to transmit the values, estimated by the channel estimator(530), with the minimum information quantity to the first communication station(400) as the feedback signal.