Abstract:
본원발명의 패킷구조는 초광대역 통신을 위한 것으로서, PLCP 프리앰블과 프레임 페이로드를 포함한다. PLCP 프리앰블은 프리앰블, 싱크워드 및 채널추정시퀀스가 순차적으로 배열되어 구성된다. PLCP 프리앰블 중 채널추정시퀀스와 프레임 페이로드는 OFDM 변조된 심볼로 구성되고, PLCP 프리앰블 및 싱크워드는 OFDM 변조가 아닌 다른 변조 방식, 예컨대 BPSK 변조, QPSK 변조, DBPSK 변조 또는 DQPSK 변조에 의해 변조된 심볼로 구성된다.
Abstract:
PURPOSE: A method for dynamic asymmetric operation of a real-time transmission system using bluetooth is provided to maintain communication quality equal even if a channel environment of one side is inferior to the other side by distributing dynamically link resources according to each channel environment of various links. CONSTITUTION: A method for dynamic asymmetric operation of a real-time transmission system using bluetooth includes a method for distributing dynamically link resources according to channel environment of each link. A real-time link for three or more devices is operated. The real-time links of both sides of the first channel environment and the second channel environment are operated asymmetrically when the first channel environment is inferior to the second channel environment.
Abstract:
PURPOSE: An Internet system using a wireless Internet connection device with a Bluetooth device and an operating method therefor are provided to allow a user to easily perform a Bluetooth connection by effectively managing one or more piconets generated when one or more Bluetooth devices are installed. CONSTITUTION: The first to third Bluetooth installation devices(110a-110c) are formed as a group through an internal communication network. An agent Bluetooth repeater(100) connects to the first to third Bluetooth installation devices(110a-110c) through the internal communication network, and relays connection between the first to third Bluetooth installation devices(110a-110c) and a Bluetooth terminal(120) according to the connection request of the Bluetooth terminal(120) in which a Bluetooth device is installed, through an external communication network.
Abstract:
본 발명은 지능형 통합 기지국 및 그 운용 방법에 관한 것으로, 상기 지능형 통합 기지국은, 서로 다른 통신 규격을 지원하는 복수의 인터페이스를 포함하는 인터페이스부; 상기 인터페이스부에 포함된 복수의 인터페이스 중에서, 사용자 단말 정보, 인터페이스 정보 및 서비스 품질 정보를 고려하여 하나의 인터페이스를 선택하고, 상기 선택된 인터페이스로의 사용자 단말의 접속을 제어하는 제어부; 및 상기 제어부에 의해 선택된 인터페이스와 유선 네트워크를 연결하는 코어 네트워크 접속부를 포함하여 구성된다. 지능형, 기지국, 통신 규격, 통합, 펨토셀
Abstract:
본 발명은 MAP 알고리즘을 향상시킨 블록 콤바이닝(block combining)을 사용한 LLR을 계산하는데 효과적인 장치 및 방법에 관한 것이다. 본 발명의 사상을 구현한 LLR 계산 방법은, 2개 이상의 타임 구간에서의 알파값, 베타값, 감마값을 구하는 단계; 각 스테이트의 상기 2개 이상의 타임 구간에서의 천이 확률값을 구하는 단계; 상기 천이 확률값들 중 일부에 서로 비교 연산을 수행하여 큰 값을 판정하고, 상기 결정된 값에 따라 상기 천이 확률값들 중 나머지에서 하나의 값을 선택하고, 상기 판정된 값과 선택된 값을 비교하여 큰 값을 선택하는 방식으로, 상기 천이 확률값 중 최대값을 구하는 단계; 및 상기 최대값에 따라 적용할 연산을 결정하여 LLR을 구하는 단계를 포함하는 것을 특징으로 한다. LLR, 천이 확률값, 비터비 디코더
Abstract:
A method and an apparatus for spreading/despreading using lower OVSF code pairs are provided to decrease an ISI(Inter Symbol Interference) due to mobility by spreading/despreading data using single or lower OVSF code pairs according to channel conditions. A spreading/despreading apparatus using lower OVSF(Orthogonal Variable Spreading Factor) code pairs includes a channel condition information receiver(31), a switch controller(32), a first spreader(33), and a second spreader(34). The channel condition information receiver receives channel condition information. The switch controller delivers a data stream to the first or second spreader according to the channel condition information from the channel condition information receiver. The first spreader spreads the data stream from the switch controller to a single OVSF code. The second spreader spreads the data stream from the switch controller to a lower OVSF code pair.
Abstract:
A terminal capable of P2P(Peer-to-Peer) communication, a communication method using the same, and a billing method based on the same are provided to enable a terminal to perform P2P communication without having a short range communication module. A terminal capable of P2P communication comprises a transmitting module(220), a receiving module(230), a received channel measurement part(240), and a communication mode control part(250). The transmitting module(220) modulates and spreads Tx data and outputs a certain Tx signal. The receiving module(230) receives a downstream signal from a base station or a P2P signal from an adjacent terminal, despreads and demodulates the received signal, and outputs certain Rx data. The received channel measurement part(240) measures strength of the received signal by using averaging processing. The communication mode control part(250) controls handover between a base station communication mode and a P2P communication mode according to the measured strength.
Abstract:
본 발명은 통신시스템에 있어서, 특히 근거리에서 무선으로 1Gb/s급 고속 전송을 가능하게 하면서도, 전송 데이터 양에 따라 회로 각 부분의 동작시간을 조절하여, 통신 시스템 및 SoC(System-on-a-Chip)의 전력소모를 줄일 수 있는 직교분할다중화 방식의 데이터 전송방법 및 장치에 관한 것이다. 본 발명에 따른 직교분할다중화 방식의 데이터 전송방법은 송신기에 입력되는 데이터로부터 선정된 전송 모드에 적합한 복수의 패킷들을 형성하는 단계와, 상기 데이터의 전송률을 판단하는 단계와, 상기 판단결과, 저전송률로 판단된 경우, 상기 복수의 패킷 각각을 복수의 부패킷으로 분할하는 단계와, 상기 분할된 부패킷을 전송하는 단계를 포함하고, 상기 부패킷의 전송시에 송신기의 전원공급시간을 줄이는 것을 특징으로 한다. 고속 무선(High-speed Wireless), 직교주파수분할다중화(OFDM) 방식, 초광대역(UWB,Ultra-WideBand), 송수신기(Transceiver), 무선 개인영역네트워크(WPAN)
Abstract:
PURPOSE: A method for converting a control protocol is provided to comprise a control protocol converter for relaying a control server with a control terminal, so that the control protocol converter can convert a control signal according to each control server, thereby enabling a protocol to be compatible between different systems. CONSTITUTION: When a user inputs a virtual server and a virtual command by using an input module of a control terminal(20000), the first transmission module of the control terminal(20000) transmits a virtual control signal(40000) including the virtual server and the virtual command to a control protocol conversion device(10000). The first receiving module of the control protocol conversion device(10000) receives the virtual control signal(40000). A control protocol conversion software module extracts an address and a command number of a control server(30000). The software module prepares a control signal(50000) which corresponds to a communication protocol and includes the command number by using the extracted server address. The second transmission module transmits the control signal(50000) to the control sever(30000). The control server(30000) performs a command corresponding to the command number.
Abstract:
PURPOSE: A radio communication method between a Bluetooth-mounted equipment and a high-speed communication equipment is provided to achieve an improved data rate using a high-speed wireless terminal having a bit processing function exceeding 1Mbps, compatible with a Bluetooth-mounted equipment. CONSTITUTION: A network for a compatible radio communication method between a Bluetooth-mounted equipment and a high-speed communication equipment is comprised of a master high-speed equipment(10), slave high-speed equipments(20,30), and a slave Bluetooth equipment(40). The master high-speed equipment(10) judges whether a desired equipment for communication is one of the slave high-speed equipments(20,30) or the slave Bluetooth equipment(40). If a desired equipment for communication is the slave Bluetooth equipment(40), the master high-speed equipment(10) transmits and receives data through a Bluetooth link(BL) in accordance with generic Bluetooth regulations. However, in case that a desired equipment for communication is one of the slave high-speed equipments(20,30), the master high-speed equipment(10) transmits and receives data through a high-speed link(HL) having a high-speed bit processing function.