Abstract:
본 발명에 따른 프레임 생성 타이밍 발생 장치는, 단일 클럭의 주파수와 전송률을 바탕으로 계산된 클럭수 누적값을 임시로 저장하는 누적값 저장 레지스터; 누적값 저장 레지스터에 저장된 클럭수 누적값을 매 클럭의 발생 시마다 누적하기 위한 누적 메모리; 누적 메모리에 누적된 클럭수 누적값이 누적 목표값과 일치하는 경우 상기 프레임의 생성 타이밍을 발생하는 프레임 타이밍 발생기; 단일 클럭의 주파수와 전송률을 바탕으로 클럭수 누적값을 계산하여 누적값 저장 레지스터에 임시로 저장시키고, 매 클럭의 발생 시마다 상기 계산된 클럭수 누적값을 상기 누적 메모리에 누적하며, 상기 누적 메모리에 누적된 클럭수 누적값과 누적 목표값의 일치 여부를 판단하여, 일치하는 경우 상기 프레임 타이밍 발생기가 프레임의 생성 타이밍을 발생하도록 제어하는 제어부; 및 상기 제어부에 의한 클럭수 누적값 계산에 있어서의 오차를 보정하기 위한 보정 타이밍을 발생함으로써, 클럭수 누적값이 보정되도록 하는 보정 회로부를 포함한다. 이와 같은 본 발명에 의하면, 프레임 생성에 있어서의 타이밍 오차를 별도의 누적기를 이용하여 보정해 줌으로써, 프레임 생성 타이밍 오차를 대폭 줄일 수 있다.
Abstract:
PURPOSE: An apparatus and a method for generating timing for creating frames are provided to reduce a timing error for creating frames by using an accumulator for the timing error. CONSTITUTION: An accumulated value storage register(110) temporarily stores a clock count accumulated value based on a transmission rate and a frequency of a single clock. An accumulated memory(120) accumulates the clock count accumulated value at each clock. A frame timing generator(130) generates a generation timing of a frame in case the clock count accumulated value is the same as an accumulated target value. A control part(140) temporarily stores the clock count accumulated value to the storage register, and controls the frame timing generator in order to generate the generation timing of the frame. A correction circuit part(150) generates a correction timing for correcting an error in calculation of the clock count accumulated value using the control part.
Abstract:
PURPOSE: A method for confirming a position of a mobile communication terminal is provided to confirm the current position of the mobile communication terminal by a GPS receiving unit installed at the mobile communication terminal. CONSTITUTION: A control unit judges whether a key for turning on power is inputted. The control unit receives current position information and time information of a mobile communication terminal(240) from a GPS(Global Positioning System) receiving unit. The control unit grasps a unit network(210) where the mobile communication terminal(240) is located and a mobile radio base station(260) most adjacent to the mobile communication terminal(240). The control unit receives peculiar identification information of the unit network(210) and position information of the mobile radio base station(260) from a memory. The control unit sends the position information of the mobile communication terminal(240) to the mobile radio base station(260) for all kinds of services of the mobile communication terminal(240). The mobile radio base station(260) sends position information of the mobile communication terminal(240) and the position information of the mobile radio base station(260) to a network controller(200). The mobile communication terminal(240) is synchronized with the mobile radio base station(260) corresponding to the mobile communication terminal(240).
Abstract:
PURPOSE: An FH(Frequency Hopping) frame structure and size deciding method for two hop VoIP(Voice over Internet Protocol) voice signal channel relay is provided to perform two hop VoIP voice call through signal channel in a wireless network. CONSTITUTION: A relay wireless terminal(20) communicates with a single relay wireless terminal and relays an FH frame having an ad-hoc network protocol header and digital voice data. The relay wireless terminal relays a VoIP voice call. A receiving wireless terminal(30) decodes the FH frame from the wireless terminal. The receiving wireless terminal supplies a voice call.