公开(公告)号：KR100294712B1

公开(公告)日：2001-07-12

申请号：KR1019990008861

申请日：1999-03-16

Applicant: 엘지정보통신주식회사

Inventor： 임용훈 ,  송재욱

IPC: H04B7/26

Abstract: 이동통신시스템에있어서, 특히광대역코드분할다중접속(이하, W-CDMA 라약칭함) 방식을사용하는이동통신시스템의기지국셀 탐색단계중 첫번째단계에서동기채널신호의현재검출결과를일정시간이전의검출결과와비교한후 최종동기채널신호검출을검증하도록하는시간지연테스트방식을적용한동기채널신호검출장치및 그방법에관한것으로, 매슬롯(T)마다일정구간동안수신된동기채널신호(SCH1)를검출하는단계와, 상기수신되는동기채널신호(SCH1)의현재검출결과와일정시간이전에검출된결과를비교하는단계와, 상기비교결과에따라상기동기채널신호(SCH1)의검출을최종검증하여해당슬롯의시작시점을구하는단계를포함하여이루어지는시간지연테스트방식을적용한동기채널신호검출방법과이를위한시스템에관한것이다.

公开(公告)号：KR100320419B1

公开(公告)日：2002-02-19

申请号：KR1019980061812

申请日：1998-12-30

Applicant: 엘지정보통신주식회사

Inventor： 서경삼 ,  임용훈

IPC: H04B7/26

Abstract: 본 발명은 종래의 셀 탐색기를 개선하여 단말기에 전원을 인가후 빠른 시간내에 기지국에서 제공된 셀을 탐색할 수 있는 이동 통신 시스템에서 셀 탐색 장치 및 방법에 관한 것이다. 이와 같은 본 발명에 따른 이동 통신 시스템에서 셀 탐색 장치는 입력신호의 칩지연별로 한 슬롯동안 기지국에서 제공되는 동기 채널신호에 대한 상관값을 한 슬롯 단위로 누적하는 누산기(Accumulator)와, 상기 누산기에서 출력되는 상관값이 누적될 때마다 누적 슬롯 수에 따라 다르게 미리 설정된 임계값과 비교하는 비교기로 구성되어, 상기 비교기의 결과값이 상기 임계값보다 크면 상기 누산기의 동작을 중단하고 상기 칩지연값을 출력한다. 또한, 본 발명에 따른 이동 통신 시스템에서 셀 탐색 방법은 기지국에서 제공되는 동기 채널신호에 대한 상관값을 한 슬롯 단위로 구하는 단계와, 상기 상관값이 누적될 때마다 누적 슬롯 수에 따라 다르게 미리 설정된 임계값과 비교하는 단계와, 상기 비교기의 결과값이 상기 임계값보다 크면 상기 상관값을 누적하는 동작을 중단시키고 상기 칩지연값을 출력하는 단계로 이루어진다.

公开(公告)号：KR1020000055467A

公开(公告)日：2000-09-05

申请号：KR1019990004106

申请日：1999-02-06

Applicant: 엘지정보통신주식회사

Inventor： 신홍섭 ,  임용훈

IPC: H04B7/24

CPC classification number: H04B1/7083 ,  H04B2201/70702 ,  H04J13/0029

Abstract: PURPOSE: A method for searching cells is provided for respective terminals to easily search cells, by not transmitting symbols to one or two slot among all the slots set up in each frame when transmitting synchronizing channel signals by the frame from a base station to the terminals, in a mobile system of an asynchronous wide band code division multiple access(CDMA) system. CONSTITUTION: A method for searching cells is provided for respective terminals to easily search cells, comprises the steps of: prevent symbols being transmitted to more than one slot among many slots allocated to transmit synchronizing channel signals between a base station and terminals by the frame; detecting starting points of respective slots by detecting the synchronizing channel signals; recognizing location of a slot indicating a minimum correlation value by correlating symbols transmitted through the respective slots; and detecting a PN code number in a corresponding PN code group by using the slot location value.

Abstract translation: 目的：提供一种用于搜索小区的方法，以便在从基站向终端发送帧的同步信道信号时，通过在每个帧中建立的所有时隙中不发送符号到一个或两个时隙来容易地搜索小区 ，在异步宽带码分多址（CDMA）系统的移动系统中。 提供了一种用于搜索小区的方法，用于各个终端容易地搜索小区，包括以下步骤：在被分配用于通过帧发送基站和终端之间的同步信道信号传输的许多时隙之间防止发送到多于一个时隙的符号; 通过检测同步信道信号来检测各个时隙的起始点; 通过将通过各个时隙发送的符号相关联来识别指示最小相关值的时隙的位置; 以及通过使用时隙位置值来检测相应PN码组中的PN码号。

公开(公告)号：KR100320420B1

公开(公告)日：2002-01-16

申请号：KR1019990012367

申请日：1999-04-08

Applicant: 엘지정보통신주식회사 ,  주식회사 엘지이아이

Inventor： 서경삼 ,  임용훈 ,  이동익

IPC: H04B1/7083

Abstract: 이동통신시스템에있어서, 특히광대역코드분할다중접속(이하, W-CDMA 라약칭함) 방식을사용하는이동통신시스템의기지국셀 탐색절차중 기지국그룹및 프레임시작점을알아내는코드그룹식별단계(Code-group Identification)에서소요되는처리시간을줄일수 있도록하드웨어를구현하고이에따른적절한셀 탐색이이루어지도록하는기지국셀 탐색방법및 장치에관한것으로, 기지국셀 탐색장치가미리검출된슬롯시작시점을기준으로미리정해진수의각 슬롯들에대한상관처리를수행하여저장하는상관블록과, 상기상관블록에서저장된상관처리결과를출력하기위한어드레스를지정하여, 임의의기지국이속한코드그룹과상기기지국으로부터전송된프레임의시작점을검출하는코드그룹및 쉬프트검출블록을포함하여구성된다.

公开(公告)号：KR100311527B1

公开(公告)日：2001-10-18

申请号：KR1019990041383

申请日：1999-09-27

Applicant: 엘지정보통신주식회사

Inventor： 서경삼 ,  임용훈 ,  신홍섭

IPC: H04B7/26

Abstract: 본발명은차세대이동통신시스템에관한것으로, 특히비동기광대역코드분할다중접속방식(이하, W-CDMA 라약칭함)을이용하는차세대이동통신시스템에서기지국의다중경로를보다빠르게획득하기위한방법및 그를위한수신장치에관한것이다. 이를위해본 발명에서는비동기 W-CDMA의차세대이동통신시스템에서규정하고있는셀 탐색절차를적용시켜기지국의다중경로를보다빠르게획득하기위한고속다중경로획득방법을제공하며, 기지국의다중경로를보다빠르게획득하기위한사용자측(UE) 수신장치를제공한다.

公开(公告)号：KR1020010028884A

公开(公告)日：2001-04-06

申请号：KR1019990041383

申请日：1999-09-27

Applicant: 엘지정보통신주식회사

Inventor： 서경삼 ,  임용훈 ,  신홍섭

IPC: H04B7/26

CPC classification number: H04B1/7117 ,  H04B7/2628

Abstract: PURPOSE: A method for obtaining a high-speed multi-path and a receiving apparatus for the method are provided to obtain a high-speed multi-path of base station by applying a cell searching procedures defined in a W-CDMA that is a next generation mobile communication system. CONSTITUTION: First, signals received by a receiving apparatus are divided into I and Q channel signals and a carrier is removed from the I and the Q signals. Then, each of I and Q signals is passed through pulse forming filters(10,20) and matching filters(30,40). In the matching filters, a specific window size is determined with center in the main-path and a correlation per a chip delay of the received signals within the window is obtained by using an orthogonal gold code and sent to a squaring part(50,60). Subsequently, a resulting values of the correlation squared in the squaring part(50,60) are summed and stored in a slot summing block(70) on a slot basis. Finally, each of the resulting values stored is compared with a predetermined critical value in the first decision block(80). According to the result of comparing, the chip delay having the resulting value exceeding the critical point is determined as a slot starting time point for each multi-path signal.

Abstract translation: 目的：提供一种用于获得该方法的高速多路径和接收装置的方法，通过应用在下一个W-CDMA中定义的小区搜索过程来获得基站的高速多径 一代移动通信系统。 构成：首先，由接收装置接收的信号被分为I和Q信道信号，并从I和Q信号中去除载波。 然后，I和Q信号中的每一个通过脉冲形成滤波器（10,20）和匹配滤波器（30,40）。 在匹配滤波器中，通过主路径中心确定特定窗口大小，并且通过使用正交金码获得窗口内接收信号的码片延迟的相关性并发送到平方部分（50,60 ）。 随后，将平方部分（50,60）中的相关平方的结果值相加并且以时隙为基础被存储在时隙求和块（70）中。 最后，将所存储的每个结果值与第一判定块（80）中的预定临界值进行比较。 根据比较的结果，将具有超过临界点的结果值的码片延迟确定为每个多路径信号的时隙开始时间点。

公开(公告)号：KR1020000065738A

公开(公告)日：2000-11-15

申请号：KR1019990012367

申请日：1999-04-08

Applicant: 엘지정보통신주식회사 ,  주식회사 엘지이아이

Inventor： 서경삼 ,  임용훈 ,  이동익

IPC: H04B1/7083

CPC classification number: H04B1/7083 ,  H04B1/709 ,  H04B7/2628

Abstract: PURPOSE: A method and an apparatus for searching base station cells are provided to achieve proper cell searching by embodying a hardware to shorten processing time required in a code-group identification to find out a base station group and a frame start point in the base station cell searching procedure of the IMT-2000 system using the W-CDMA system. CONSTITUTION: A correlation block(100) is comprised of a bank of 17 correlator(120) and a comparator(110). The bank of 17 correlator(120) gets 17 correlation values per slot 'corr(b,j)' from signals 'cs_in_l' and 'cs_in_Q' inputted through each channel. The comparator(110) informs a slot quantity to carry out correlation in the bank of 17 correlator(120). A code group and shift detection block(200) is comprised of an accumulator(210) and a peak detector(220). The accumulator(210) accumulates a correlation value 'ram_out' outputted from a RAM(130) by the maximum 1 frame. The peak detector(220) detects the optimum code arrangement among accumulation values outputted from the accumulator(210).

Abstract translation: 目的：提供一种用于搜索基站小区的方法和装置，以通过实施硬件来实现适当的小区搜索，以缩短代码组识别中所需的处理时间，以在基站中找出基站组和帧起始点 使用W-CDMA系统的IMT-2000系统的小区搜索过程。 构成：相关块（100）由17个相关器（120）的组和比较器（110）组成。 17相关器（120）的组通过每个通道输入的信号“cs_in_l”和“cs_in_Q”，每个时隙'corr（b，j）'获得17个相关值。 比较器（110）通知时隙数量来执行17相关器（120）的存储体中的相关。 代码组和移位检测块（200）由累加器（210）和峰值检测器（220）组成。 累加器（210）将从RAM（130）输出的相关值“ram_out”累加最大1帧。 峰值检测器（220）检测从累加器（210）输出的累加值之间的最佳代码排列。

公开(公告)号：KR1020000060521A

公开(公告)日：2000-10-16

申请号：KR1019990008861

申请日：1999-03-16

Applicant: 엘지정보통신주식회사

Inventor： 임용훈 ,  송재욱

IPC: H04B7/26

CPC classification number: H04W56/003 ,  H04B1/7083 ,  H04W88/08

Abstract: PURPOSE: An apparatus and a method for detecting a synchronous signal using a time delay test are provided to overcome an error due to a fading phenomenon on a channel by comparing a current detection result of the synchronous channel signal with a detection result prior to a uniform time and checking a detection of a last synchronous channel signal detection. CONSTITUTION: A maximum value detecting unit(40) detects a maximum accumulation value among outputs of an accumulating unit(30) and outputs an index of the maximum value needed for obtaining a start time of a slot from the maximum value. A current maximum index register(60) stores the index of the maximum value output from the maximum value detecting unit(40). A n-shift register(70) stores the index of the maximum value stored in the current maximum index register(60) when the maximum value detecting unit(40) outputs an index of a next maximum value. A past maximum index register(80) stores the index of the initial maximum value stored in the n-shift register(70) when the n number of the index of the maximum value is output. A comparator(90) compares a stored value of the current maximum index register(60) with a stored value of the past maximum index register(80) when an index of a new maximum value is output from the maximum value detecting unit(40).

Abstract translation: 目的：提供一种使用时间延迟测试来检测同步信号的装置和方法，以通过将同步信道信号的当前检测结果与均匀的同步信道信号的检测结果进行比较来克服由于信道上的衰落现象引起的误差 并检查最后一次同步信道信号检测。 构成：最大值检测单元（40）检测累积单元（30）的输出中的最大累积值，并从最大值输出获得时隙起始时间所需的最大值的索引。 当前的最大值索引寄存器（60）存储从最大值检测单元（40）输出的最大值的索引。 当最大值检测单元（40）输出下一个最大值的索引时，n位移寄存器（70）存储存储在当前最大索引寄存器（60）中的最大值的索引。 当输出最大值的索引号时，过去的最大索引寄存器（80）存储存储在n位移寄存器（70）中的初始最大值的索引。 当从最大值检测单元（40）输出新的最大值的索引时，比较器（90）将当前最大索引寄存器（60）的存储值与过去最大索引寄存器（80）的存储值进行比较， 。

公开(公告)号：KR1020000045255A

公开(公告)日：2000-07-15

申请号：KR1019980061813

申请日：1998-12-30

Applicant: 엘지정보통신주식회사

Inventor： 임용훈 ,  서경삼

IPC: H04B1/7083

CPC classification number: H04B1/7083 ,  H04B1/70752 ,  H04B7/2628

Abstract: PURPOSE: A cell detector of a mobile communication system, using Code Division Multiple Access(CDMA) of a synchronous wide band is provided to rapidly detect a cell supplied from a base station by supplying power with a terminal. CONSTITUTION: A cell detector of a mobile communication system comprises a correlation circuit(10), a memory(30), a code storing circuit(60), a slot counter(100), a shift counter(90), a code group counter(80), an accumulator(130), and a peak detector(140). The correlation circuit(10) gets correlating value from an input signal. The memory(30) stores the correlating value in order. The code storing circuit(60) stores a code list by code group, and, if necessary, supplies the stored value to the memory(30). The slot counter(100) addresses a plurality of slot data stored in the memory(30) by an input clock. The shift counter(90) counts a starting point of a flame by a carry outputted from the slot counter(100). The code group counter(80) counts an index of a candidacy code group by a carry outputted from the shift counter(90). The accumulator(130) accumulates a frame of correlating value outputted from the memory(30). And the peak detector(140) detects an optimal code array for an output signal of the accumulator(130).

Abstract translation: 目的：提供使用同步宽带的码分多址（CDMA）的移动通信系统的小区检测器，通过向终端提供电力来快速检测从基站提供的小区。 构成：移动通信系统的小区检测器包括相关电路（10），存储器（30），代码存储电路（60），时隙计数器（100），移位计数器（90），代码组计数器 （80），累加器（130）和峰值检测器（140）。 相关电路（10）从输入信号获得相关值。 存储器（30）按顺序存储相关值。 代码存储电路（60）通过代码组存储代码列表，如果需要，将存储的值提供给存储器（30）。 时隙计数器（100）通过输入时钟寻址存储在存储器（30）中的多个时隙数据。 换档计数器（90）通过从槽计数器（100）输出的进位来计数火焰的起始点。 代码组计数器（80）通过从移位计数器（90）输出的进位来计数候选资格码组的索引。 累加器（130）累积从存储器（30）输出的相关值的帧。 并且峰值检测器（140）检测用于累加器（130）的输出信号的最佳代码阵列。

公开(公告)号：KR1020000045254A

公开(公告)日：2000-07-15

申请号：KR1019980061812

申请日：1998-12-30

Applicant: 엘지정보통신주식회사

Inventor： 서경삼 ,  임용훈

IPC: H04B7/26

CPC classification number: H04B1/7083

Abstract: PURPOSE: A method for searching a cell is provided to search a cell supplied from a base station within a short time, after power supply is inputted to a terminal, in a mobile communication system of a asynchronous wide band code division multiple access(CDMA) system. CONSTITUTION: A method for searching a cell in a mobile communication system comprises the steps of: accumulating a correlation value for a synchronous channel signal supplied from a base stating for one slot; comparing with a pre-set threshold value whenever the correlation value is accumulated; and stopping an operation of an accumulator and outputting a result value when the result value of a comparator is bigger than the threshold value.

Abstract translation: 目的：提供一种用于搜索小区的方法，在异步宽带码分多址（CDMA）的移动通信系统中，在向终端输入电源之后，在短时间内搜索从基站提供的小区， 系统。 一种用于在移动通信系统中搜索小区的方法，包括以下步骤：对从一个基站说明的一个时隙提供的同步信道信号累加相关值; 每当累积相关值时与预设的阈值进行比较; 并且当比较器的结果值大于阈值时，停止累加器的操作并输出结果值。