公开(公告)号：US5818903A

公开(公告)日：1998-10-06

申请号：US717805

申请日：1996-09-24

Applicant: Ki-Chul Han ,  Duck-Bin Im ,  In-Myoung Jeong ,  Sang-Cheon Lee ,  Ki-Hong Kim ,  Min-Sik Seo ,  Hyun Lee

Inventor： Ki-Chul Han ,  Duck-Bin Im ,  In-Myoung Jeong ,  Sang-Cheon Lee ,  Ki-Hong Kim ,  Min-Sik Seo ,  Hyun Lee

IPC: H04M3/32 ,  H04W24/00 ,  H04M1/24

CPC classification number: H04W24/00 ,  H04M3/323

Abstract: An improved CDMA mobile automatic call simulating method and a simulator therefor which are capable of computing an accurate statistic data by repeating an actual CDMA call attempt and call incoming and by judging the result of the call attempt, which includes a management unit for communicating with the mobile stations and controlling the same in accordance with a previously set protocol, and a connection unit for communicating with the management unit and the mobile stations in accordance with an SDLC in an RS-422 signal method.

Abstract translation: 一种改进的CDMA移动自动呼叫模拟方法及其模拟器，其能够通过重复实际的CDMA呼叫尝试并呼入呼叫并通过判断呼叫尝试的结果来计算准确的统计数据，该结果包括用于与 移动站，并根据预先设定的协议对其进行控制;以及连接单元，用于根据RS-422信号方法的SDLC与管理单元和移动站进行通信。

公开(公告)号：US06400750B1

公开(公告)日：2002-06-04

申请号：US09205568

申请日：1998-12-04

Applicant: Dong-Wook Lee ,  Duck-Bin Im

Inventor： Dong-Wook Lee ,  Duck-Bin Im

IPC: H04L2730

CPC classification number: H04L5/026

Abstract: A base station system of a multicarrier CDMA and a data transmission method and a mobile communication system using the same are disclosed. The system includes a base station control apparatus connecting with an exchange, a pilot signal modulation apparatus for generating a spread spectrum modulated pilot signals as many as the number of carriers in accordance with a control of the base station control apparatus, a paging signal modulation apparatus for generating a spread spectrum modulated paging signals as many as the number of carriers in accordance with a control of the base station control apparatus, a plurality of traffic signal modulation apparatuses for generating a spread spectrum modulated traffic signals as many as the number of carriers in accordance with a control of the base station control apparatus, a plurality of combiners provided as many as the number of the carriers for combining input signals from the modulation apparatuses, and a radio frequency transmission apparatus for modulating the outputs from the combiners into multiple radio frequencies and transmitting the same, for thereby controlling a lot number of mobile stations by distinguishing the mobile station signals using an orthogonal codes at a link from a base station to a terminal in the multicarrier CDMA cellular system and removing a interference between the mobile stations in the same cell.

Abstract translation: 公开了一种多载波CDMA的基站系统和数据传输方法以及使用该基站系统的移动通信系统。 该系统包括与交换机连接的基站控制装置，导频信号调制装置，用于根据基站控制装置的控制生成与载波数一样多的扩频调制导频信号;寻呼信号调制装置 用于根据基站控制装置的控制产生与载波数一样多的扩频调制寻呼信号;多个业务信号调制装置，用于生成与载波数相同的扩频调制业务信号， 根据基站控制装置的控制，设置多个用于组合来自调制装置的输入信号的载波数量的多个组合器，以及用于将组合器的输出调制成多个无线电频率的射频发送装置 并发送它，从而控制很多 通过使用从基站到多载波CDMA蜂窝系统中的终端的链路的正交码区分移动站信号，并去除同一小区中的移动台之间的干扰，移动站的数量。

公开(公告)号：US5627834A

公开(公告)日：1997-05-06

申请号：US358531

申请日：1994-12-19

Applicant: Ki-Chul Han ,  Duck-Bin Im ,  In-Myoung Jeong ,  Sang-Cheon Lee

Inventor： Ki-Chul Han ,  Duck-Bin Im ,  In-Myoung Jeong ,  Sang-Cheon Lee

IPC: H04M3/32 ,  H04W24/00 ,  H04M1/24 ,  H04M3/22

CPC classification number: H04W24/00 ,  H04M3/323

Abstract: An automatic call simulator for simulating call processing capacity and performance between a base station and a mobile station of a CDMA mobile communication system is disclosed. A mobile station has a communication port for serial communication with an external unit. An operating unit controls all the mobile station by operating software, generates the state of each mobile station during simulation and a simulation result, and records simulation result data. An interface unit for interfacing the mobile station with the operation unit is included within a metal box so as not to be influenced by an external electromagnetic wave and has external terminals connected to the mobile station and to the operation unit. The interface unit and the mobile station are connected through the communication port.

Abstract translation: 公开了一种用于模拟CDMA移动通信系统的基站和移动站之间的呼叫处理能力和性能的自动呼叫模拟器。 移动站具有用于与外部单元进行串行通信的通信端口。 操作单元通过操作软件对所有的移动台进行控制，在仿真期间生成每个移动站的状态和仿真结果，并记录仿真结果数据。 用于将移动台与操作单元对接的接口单元包括在金属盒内，不受外部电磁波的影响，并且具有连接到移动台和操作单元的外部端子。 接口单元和移动台通过通信端口连接。

公开(公告)号：US06324171B1

公开(公告)日：2001-11-27

申请号：US09205567

申请日：1998-12-04

Applicant: Dong-Wook Lee ,  Duck-Bin Im

Inventor： Dong-Wook Lee ,  Duck-Bin Im

IPC: H04B7216

CPC classification number: H04J13/0077 ,  H04L27/2602 ,  H04L27/2627 ,  H04L2027/0087

Abstract: A base station system of a multicarrier CDMA and a data transmission method and a mobile communication system using the same are disclosed. The system includes a base station controller connected with an exchanger for generating random phase values as much as the number of carriers when a call set-up is requested and for outputting a paging information containing the phase values, a pilot signal modulation unit for generating a spread spectrum modulated I-phase pilot signal and Q-phase pilot signal as many as the number of the carriers in accordance with a control of the base station controller, a paging signal modulation unit for generating a spread spectrum modulated I-phase paging signal and Q-phase paging signal having predetermined phase differences compared to the pilot signal as many as the number of the carriers, a plurality of traffic signal modulation units for generating, as many as the number of the carriers, a spread spectrum modulated I-phase traffic signal and Q-phase traffic signal having phase differences between the carriers as much ad the phase transition values inputted from the base station controller compared to the pilot signal, and a plurality of combiners for combining the I-phase signal and Q-phase signal, respectively, inputted from each modulation apparatus corresponding to a corresponding one of the carriers.

Abstract translation: 公开了一种多载波CDMA的基站系统和数据传输方法以及使用该基站系统的移动通信系统。 该系统包括与交换机连接的基站控制器，用于在请求呼叫建立时产生与载波数量一样多的随机相位值，并输出包含相位值的寻呼信息;导频信号调制单元，用于生成 扩展频谱调制的I相导频信号和Q相导频信号与根据基站控制器的控制的载波数一样多;寻呼信号调制单元，用于产生扩展频谱调制的I相寻呼信号;以及 与导频信号相比，具有与载波数相同的预定相位差的Q相寻呼信号，多个业务信号调制单元，用于生成与载波数一样多的载波的扩频调制的I相业务 信号和Q相业务信号在载波之间具有相位差，并且从基站控制器输入的相变值 以及用于分别从对应于一个载波的每个调制装置输入的用于组合I相信号和Q相信号的多个组合器。

公开(公告)号：US5991636A

公开(公告)日：1999-11-23

申请号：US915945

申请日：1997-08-21

Applicant: Seok-Ho Won ,  In-Myoung Jeong ,  Whan-Woo Kim ,  Duck-Bin Im

Inventor： Seok-Ho Won ,  In-Myoung Jeong ,  Whan-Woo Kim ,  Duck-Bin Im

IPC: H04B7/005 ,  H04Q7/20

CPC classification number: H04W52/221 ,  H04W52/225 ,  H04W52/362

Abstract: An adaptive power control method for a CDMA mobile radio telephone system is disclosed which operates similarly to a fixed increment and decrement power control method in the portion where the slope of the channel signal due to a fading effect is steep when the transmission power of a mobile station is adjusted. In the portion where the slope of the channel signal is gentle, like the peak portion of the channel signal, the granular noise can be improved by using the Jayant's equations. In accordance with the present invention, the fading effect in the mobile radio channel can be efficiently compensated without giving much load to a forward link since a mobile station determines the variation of the backward channel signal by using the statistical characteristics of a power control command (1 bit) transmitted from a base station. Further, an amount of interferences among a plurality of users can be reduced because the variation (variance) of a receiving power at the base station caused by the fading effect in each mobile station is made small. Thus, the overall performance of the system can be significantly improved in accordance with the present invention.

Abstract translation: 公开了一种用于CDMA移动无线电话系统的自适应功率控制方法，其操作类似于在移动台的发射功率下由于衰落效应而导致的信道信号的斜率陡峭的部分中的固定增量和减小功率控制方法 车站调整。 在通道信号的斜率平缓的部分，如通道信号的峰值部分，可以通过使用Jayant方程来提高粒状噪声。 根据本发明，由于移动台通过使用功率控制指令的统计特性来确定反向信道信号的变化，可以有效地补偿移动无线电信道中的衰落效应，而不会给前向链路带来很大的负担 1位）从基站发送。 此外，由于每个移动台中由衰落效应引起的基站处的接收功率的变化（方差）变小（多少），所以可以减少多个用户之间的干扰量。 因此，根据本发明，可以显着改善系统的整体性能。