公开(公告)号：KR100375148B1

公开(公告)日：2003-03-08

申请号：KR1020010023510

申请日：2001-04-30

Applicant: 한국과학기술원

Inventor： 송익호 ,  김홍길 ,  정창용

IPC: H04B1/76

Abstract: PURPOSE: A method for quickly acquiring a code in a frequency selective attenuation channel is provided to quickly the code by setting a threshold value of a detector using a code precedence statistics quantity and an approximate method and removing a time required in the estimation of a signal to noise ratio. CONSTITUTION: Normal and orthogonal measuring values are obtained. A combination probability density function of the measuring values, code vectors of the measuring values, discrete combination probability mass functions of level precedence vectors are calculated. A test statistics quantity of a local optimum detector, a test statistics quantity of a local optimum precedence detector, a test statistics quantity of a local semi-optimum precedence detector, and a test statistics quantity of the kth corrected code precedence detector are calculated. A threshold value and a statistics parameter are determined using the calculated test statistics quantity.

Abstract translation: 目的：提供一种用于快速获取频率选择性衰减信道中的码的方法，以通过使用码优先统计量和近似方法来设置检测器的阈值并且去除估计信号所需的时间来快速地将码 噪声比。 构成：获得正常和正交测量值。 计算测量值的组合概率密度函数，测量值的代码矢量，级别优先矢量的离散组合概率质量函数。 计算局部最优检测器的检验统计量，局部最优先检测器的检验统计量，局部半最优先检测器的检验统计量以及第k个修正码优先检测器的检验统计量。 使用计算的测试统计量来确定阈值和统计参数。

公开(公告)号：KR100523482B1

公开(公告)日：2005-10-25

申请号：KR1020030008098

申请日：2003-02-10

Applicant: 한국과학기술원

Inventor： 성단근 ,  정창용 ,  황호영 ,  정조운

IPC: H04L12/28

Abstract: 본 발명은 다양한 서비스들을 지연요구조건에 따라 분류한 상황에서 각각의 서비스에 대하여 그 지연 요구조건을 만족시키기 위한 AAL2 ATM 링크 다중화 전송장치에 관한 것이다.
각 서비스 트래픽군별로 서비스의 특성, 링크 효율, 지연요구조건을 고려하여 셀 생성 타이머 길이를 정하는 셀 생성부를 둔다. 그리고 셀 다중화부에서는 분류된 서비스군들을 간단하게 다시 지연보장군과 지연무보장군 두가지로 분류하여 단순한 구조로 여러 다양한 서비스군들의 지연요구조건을 만족시킬 수 있도록 하는 특징을 갖고 있다.
셀 다중화 스케쥴링 방식으로는 버퍼의 서비스율, 버퍼의 길이 변화율을 기반으로 하는 가변 가중치 라운드 로빈 대역 할당방식을 도입하여 입력 트래픽 부하에 따라 링크 효율을 증가시키고 서비스군들의 지연요구조건을 만족시킬 수 있도록 하였고 상기 셀 다중화 스케쥴링 방식을 일반 패킷망에 확장하여 적용하였다.

公开(公告)号：KR1020040072140A

公开(公告)日：2004-08-18

申请号：KR1020030008098

申请日：2003-02-10

Applicant: 한국과학기술원

Inventor： 성단근 ,  정창용 ,  황호영 ,  정조운

IPC: H04L12/28

CPC classification number: H04L12/5601 ,  H04L2012/5656

Abstract: PURPOSE: An AAL2 ATM transmitting apparatus securing delay request conditions of various services, and a method thereof, and a method for transmitting packets using the same are provided to satisfy delay request conditions by services while improving the link efficiency through link multiplexing transmission to various services. CONSTITUTION: An AAL2(ATM Adaptation Layer2) multiplexing part(100) multiplexes traffic to each service user. An AAL2 ATM(Asynchronous Transfer Mode) cell generating part(120) generates ATM cells by putting the multiplexed AAL2 CPS packets on the ATM cells of 53 bytes by using a cell generating timer. An AAL2 ATM cell multiplexing part(130) classifies the ATM cells into a delay securing group and a delay non-securing group for putting the generated ATM cells in the corresponding buffer and transmits the ATM cells according to a cell multiplexing algorithm.

Abstract translation: 目的：提供一种确保各种业务的延迟请求条件的AAL2 ATM发送装置及其方法，以及使用该方法发送分组的方法，以通过业务连续复用传输来提高链路效率，从而满足服务的延迟请求条件 。 构成：AAL2（ATM适配层2）复用部分（100）将流量复用到每个服务用户。 AAL2 ATM（异步传输模式）小区生成部分通过使用小区生成定时器将多路复用的AAL2CPS分组放置在53字节的ATM信元上来生成ATM信元。 AAL2 ATM信元复用部分（130）将ATM信元分类为延迟保密组和延迟非保密组，用于将生成的ATM信元放在相应的缓冲器中，并根据信元复用算法发送ATM信元。

公开(公告)号：KR1020020061413A

公开(公告)日：2002-07-24

申请号：KR1020010002469

申请日：2001-01-16

Applicant: 한국과학기술원

Inventor： 송익호 ,  김홍길 ,  정창용

IPC: G06F17/10

Abstract: PURPOSE: A method for obtaining a rapid signature sequence based on a code and rank statistics is provided to obtain a test statistic of new detector using an approximate method, enhance detecting performance by deciding a threshold value, and removing a time for an interference variance estimation, thereby reducing an average pseudo noise code obtaining time. CONSTITUTION: New type detector necessary for obtaining a pseudo noise code in a direct sequence band diffusion system is suggested. A method for obtaining a rapid signature sequence based on a code and rank statistics is suggested for inducing a test statistic of a local optimum rank detector and obtaining a test statistic of a local sub optimization rank detector and a deformation code rank detector using an asymptotic approximation. After obtaining a test statistic of new detector using an approximation based on a code and a rank, a threshold value is decided, and a detecting performance is increased and a time necessary for interference variance estimation is removed. Thus, an average pseudo noise code obtaining time is reduced.

Abstract translation: 目的：提供一种基于代码和秩统计获取快速签名序列的方法，以使用近似方法获得新检测器的检验统计量，通过确定阈值增强检测性能，并消除干扰方差估计的时间 从而减少平均伪噪声码获取时间。 建议：建议在直接序列带扩散系统中获得伪噪声码所需的新型检测器。 提出了一种基于代码和秩统计量获得快速签名序列的方法，用于诱导局部最优秩检测器的检验统计量，并使用渐近近似获得局部子优化等级检测器和变形代码等级检测器的检验统计量 。 在使用基于码和秩的近似获得新检测器的检验统计量之后，确定阈值，并且增加检测性能，并且消除干扰方差估计所需的时间。 因此，减少平均伪噪声码获取时间。

公开(公告)号：KR100840564B1

公开(公告)日：2008-06-23

申请号：KR1020070011810

申请日：2007-02-05

Applicant: 한국과학기술원

Inventor： 김수민 ,  정조운 ,  정창용 ,  정병훈 ,  강민석 ,  성단근

IPC: H04B7/26 ,  H04L12/28 ,  H04B5/02

CPC classification number: H04W52/26 ,  H04W88/06 ,  Y02D70/00

Abstract: A multi module communication apparatus and a data transmitting and receiving method using the same are provided to exchange a signal for controlling power supply of plural wireless communication modules included in the multi module communication apparatus by using a low power communication channel, thereby minimizing the whole power consumption. A selection information receiver(430) receives communication module selection information for instructing to select one of plural wireless communication modules(412,413) through a wireless channel(211) provided by a low power communication module(411). A power controller(440) supplies power by selecting a wireless communication module designated by the communication module selection information received through the selection information receiver. A data transceiver(450) transmits or receives data through a wireless channel(212,213) provided by the selected wireless communication module.

Abstract translation: 提供一种多模块通信装置和使用该多模块通信装置的数据发送和接收方法，以通过使用低功率通信信道来交换用于控制多模块通信装置中包括的多个无线通信模块的电力供应的信号，从而最小化整个功率 消费。 选择信息接收器（430）通过由低功率通信模块（411）提供的无线信道（211）接收用于指示选择多个无线通信模块（412,413）中的一个的通信模块选择信息。 功率控制器（440）通过选择由通过选择信息接收器接收到的通信模块选择信息指定的无线通信模块来供电。 数据收发器（450）通过由所选择的无线通信模块提供的无线信道（212,213）发送或接收数据。