Abstract:
PURPOSE: A thermosetting composition is provided to obtain excellent thermosetting property, impregnation property, and thermal properties and to be applied as a material of a substrate which is light, thin, simple, and small. CONSTITUTION: A thermosetting composition includes an organic solvent, a thermosetting liquid crystalline oligomer, and a cross-linking agent. The thermosetting liquid crystalline oligomer has a structure marked as a chemical formula 1. In the chemical formula 1, R^1 is marked as a chemical formula 2 and R^2 is marked as a chemical formula 4. In the chemical formula 1, Z^1 and Z^2 are thermosetting crosslinkable reactive groups having multiple bond in the end of the reactive group.
Abstract:
Provided is an apparatus and method for ranging in a broadband wireless communication system. In a method for communication of a base station, a received signal and ranging codes are correlated to detect codes. Feedback information for the detected codes is generated, and a ranging feedback message including the generated feedback information is generated. The ranging feedback message is physical-layer-encoded and the resulting data are broadcast. The base station combines and broadcasts data region allocation information and control information for ranging codes received from a plurality of mobile stations. Therefore, resources can be saved and a signalling process can be simplified.
Abstract:
An apparatus and a method for ranging in a broadband wireless communication system are provided to save resources and to simplify a signaling procedure by making a base station construction control information on ranging codes and area assignment information into one message and broadcast the constructed message as compared with processing individually ranging codes. A ranging method comprises the following several steps. A base station extracts received signals from a ranging area(301). The base station correlates the extracted data with ranging codes, and modulates the codes(303). The base station generates feedback information like ranging status information, offset adjustment information and uplink resource assignment information for each code(305). The base station constructs a ranging feedback message including the feedback information for the codes(307). The base station broadcasts the ranging feedback message to all the terminals(309).
Abstract:
본 발명은 광대역 무선접속 통신망에서 다중 홉 시스템을 위한 핸드오버 장치 및 방법에 관한 것으로 광대역 무선접속 통신망에서 다중 홉 시스템을 지원하는 핸드오버 장치에 있어서, 주변 기지국과 중계국의 정보를 포함하는 메시지를 주기적으로 방송하는 기지국과, 상기 기지국이 방송한 메시지를 수신한 후, 상기 메시지에 포함되어 있지 않은 기지국 또는 중계국이 있을 경우 상기 메시지에 포함하여 주기적으로 방송하는 중계국과, 상기 중계국이 방송한 메시지를 수신한 후, 스캔과정을 거쳐 상기 메시지에 포함되어 있지 않은 기지국 또는 중계국이 있을 경우, 핸드오버 할 기지국 또는 중계국의 후보에 포함한 후, 핸드오버 할 중계국 또는 기지국의 후보 정보를 생성하는 단말을 포함하는 것으로 다중 홉 시스템을 지원하는 광대역 무선접속 네트워크에서 단말이 핸드오버를 시도할 경우 발생할 수 있는 여러 경우에 대한 문제를 해결할 수 있는 이점이 있다. IEEE 802.16 시스템, 다중홉(Multi Hop)시스템, BTS(Base Transceiver Station). MH-BTS(MultiHop-Base Transceiver Station), 중계국(Relay, relay system)