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    • 5. 发明授权
    • Method and apparatus for analyzing circuit model by reduction and computer program product for analyzing the circuit model
    • 用于分析电路模型的方法和装置以及用于分析电路模型的计算机程序产品
    • US07987439B2
    • 2011-07-26
    • US12027732
    • 2008-02-07
    • Hong Bo CheYoung Hwan Kim
    • Hong Bo CheYoung Hwan Kim
    • G06F17/50
    • G06F17/5036G06F2217/78
    • Provided are a method and apparatus for analyzing a circuit model by reducing, and a computer program product for analyzing the circuit model. The circuit model at least includes independent current source models, resistance models, and capacitance models. Also, the circuit model forms a resistance capacitance (RC) network with independent current sources. The method includes selecting a node to be removed using resistance information and comparing conductance of a capacitor for a given time step and the total conductance of the node. Further, the method includes removing the selected nodes and generating RC elements and independent current sources using adjacent nodes, which maintain the accuracy of node voltages of a circuit reduced in an accuracy order used for entrywise perturbation of the corresponding circuit equation. Moreover, an efficient method of handling the independent current sources while reducing the circuit is provided.
    • 提供了一种通过减少电路模型分析的方法和装置,以及用于分析电路模型的计算机程序产品。 电路模型至少包括独立的电流源模型,电阻模型和电容模型。 此外,电路模型形成具有独立电流源的电阻电容(RC)网络。 该方法包括使用电阻信息来选择要去除的节点,并且比较给定时间步长的电容器的电导率和节点的总电导率。 此外,该方法包括使用相邻节点去除所选择的节点并产生RC元件和独立电流源,其保持电路的节点电压的精度以用于相应电路方程的入门扰动的精度顺序降低。 此外,提供了一种在减少电路的同时处理独立电流源的有效方法。
    • 8. 发明授权
    • Method and apparatus for radio packet data transmission
    • 用于无线电分组数据传输的方法和装置
    • US06880103B2
    • 2005-04-12
    • US09986415
    • 2001-11-08
    • Young Hwan KimDoo Young MoonKyung Kuk Lee
    • Young Hwan KimDoo Young MoonKyung Kuk Lee
    • H04L12/56H04L1/18G06F11/00
    • H04L1/1887
    • A method and device for communicating data within a packet frame unit between a terminal and a base station are disclosed. The terminal communicates the packet data to the base station. In response, the base station transmits a channel occupying signal, if the data transmission from the terminal is perceived by the base station. The terminal continues the communication of the packet data, while the channel occupying signal is active, determines whether the base station receives the communicated packet data, and ends the process for communicating the packet data if the base station receives the communicated packet data. If the base station fails to receive the communicated packet data, the terminal is informed through the channel occupying signal. Thereafter, the terminal discontinues its communication and then re-attempts to communicate the packet data from the beginning.
    • 公开了一种用于在终端和基站之间的分组帧单元内传送数据的方法和装置。 终端将分组数据传送到基站。 作为响应,如果来自终端的数据传输被基站感知,则基站发送信道占用信号。 终端继续通信分组数据,而信道占用信号是活动的,确定基站是否接收所传送的分组数据,并且如果基站接收到传送的分组数据,则结束传送分组数据的处理。 如果基站未能接收所传送的分组数据,则通过信道占用信号通知终端。 此后,终端终止其通信,然后从一开始重新尝试传送分组数据。