公开(公告)号：KR100954380B1

公开(公告)日：2010-04-26

申请号：KR1020070102763

申请日：2007-10-11

Applicant: 한국전자통신연구원 ,  연세대학교 산학협력단

Inventor： 조한벽 ,  함영환 ,  정훈 ,  김선중 ,  표철식 ,  윤명준 ,  이재용 ,  김재현

IPC: H04B7/26 ,  H04L12/28

Abstract: A position-based routing method by using a cell in a wireless sensor network is provided to minimize the energy and to determine a path until a destination node easily by reducing the periodical communication for the position information confirmation. In a next-hop position calculation process, the virtual ONI(Optimal Next-hop Information) among the paths until the destination node is calculated. In a communication area division process(302), the communication area is divided into fixed cell sizes by using the calculated virtual ONI position. In a packet broadcasting process(303), a packet including the virtual ONI position and the cell sizes is broadcasted to the surrounding node in the communication area. In a next-hop node decision process(305), the firstly transmitted surrounding node is determined as the next-hop node after receiving a response message in regard to the broadcasted packet from the surrounding node. In the next-hop position calculation process, the position joined by the virtual segment for connecting the distance until the destination node and a virtual circle corresponding to one's own communication area is calculated and the calculating result is determined as the next hop position.

公开(公告)号：KR1020160114469A

公开(公告)日：2016-10-05

申请号：KR1020150041018

申请日：2015-03-24

Applicant: 한국전자통신연구원

Inventor： 이상욱 ,  김재현

IPC: G01S19/14 ,  G01S19/20 ,  G01S19/25 ,  G01S19/42

Abstract: 이동체추적장치에서의이동체추적방법으로서, 이동체추적장치의동기화된복수의 GNSS(Global Navigation Satellite System) 수신기에서각각적어도하나의 GNSS 위성으로부터송출된 GNSS 신호들을수신하고, 수신된상기 GNSS 신호들을상기적어도하나의 GNSS 위성으로부터송출된 GNSS 신호가이동체에반사되지않고직접수신된 GNSS 신호들과이동체에반사되어수신된 GNSS 신호들로구분한다. 그리고이동체추적장치의위치산출부에서직접수신된 GNSS 신호들과반사되어수신된 GNSS 신호들을이용하여이동체의위치를계산한다.

公开(公告)号：KR1020150064896A

公开(公告)日：2015-06-12

申请号：KR1020130149763

申请日：2013-12-04

Applicant: 한국전자통신연구원

Inventor： 신천식 ,  김재현 ,  김재훈

IPC: H04W4/22 ,  H04W4/02 ,  H04W88/06 ,  G08B21/10

CPC classification number: H04W4/12 ,  H04M1/72536 ,  H04W4/02 ,  H04W88/02

Abstract: 본발명은이동통신단말기와조난구조단말기를상호연동되도록구성하여이동통신단말기의음성호통화불가시구조신호를음성호전송을위한네트워크와상이한조난구조네트워크를통해자동으로전송할수 있도록구조신호전송장치및 그방법에관한것으로서, 상기장치는, 사용자의요청에따른음성호를제1 네트워크를통해처리하고, 상기음성호처리를위한제1 네트워크접속이불가한경우, 조난구조메시지를생성을위한정보를제공하는제1 단말기; 및상기제1 단말기에서제공되는조난구조메시지생성을위한정보에따라조난구조메시지를생성하여생성된조난구조메시지를제2 네트워크를통해목적지로전송하는제2 단말기를포함한다.

Abstract translation: 救援信号发送装置及方法技术领域本发明涉及一种救援信号发送装置和方法，其将移动通信终端连接到遇险救援终端，并且在不能发送呼叫的情况下，通过不同于语音呼叫传输网络的遇难救援网络自动发送救援信号 来自移动通信终端和救援信号发送装置的语音呼叫由通过使用第一网络的用户请求来处理语音呼叫的第一终端构成，并且如果连接到第一网络，则提供遇险救援消息生成信息， 语音呼叫处理不可用，第二终端基于由第一终端提供的遇难救援消息生成信息生成遇险救援消息，并通过第二网络将生成的遇难救援消息发送到目的地。

公开(公告)号：KR1020100046514A

公开(公告)日：2010-05-07

申请号：KR1020080105377

申请日：2008-10-27

Applicant: 한국전자통신연구원

Inventor： 주인원 ,  이상욱 ,  신천식 ,  김재현 ,  최승현 ,  김재훈

IPC: G01S5/14

Abstract: PURPOSE: A global navigation satellite apparatus and a method using near field communication is provided, which can receive a navigation signal from a satellite through the navigation aid information. CONSTITUTION: A near field communication unit(110) receives secondary navigation information from the outside through the local area wireless communication and transfers the received navigation aid information to the other satellite navigation receiving devices through the local area wireless communication. A storage unit(120) stores the received secondary navigation information. A navigation data processor(130) calculates the code delay time about the saved navigation aid information. A satellite navigation receiver(140) receives positioning signal from a satellite by using the secondary navigation information.

Abstract translation: 目的：提供一种全球导航卫星设备和使用近场通信的方法，可通过导航辅助信息从卫星接收导航信号。 构成：近场通信单元（110）通过局域无线通信从外部接收二次导航信息，并通过局域无线通信将接收到的导航辅助信息传送到其他卫星导航接收装置。 存储单元（120）存储所接收的二次导航信息。 导航数据处理器（130）计算关于保存的导航辅助信息的代码延迟时间。 卫星导航接收机（140）通过使用辅助导航信息从卫星接收定位信号。

公开(公告)号：KR1020100025971A

公开(公告)日：2010-03-10

申请号：KR1020080084751

申请日：2008-08-28

Applicant: 한국전자통신연구원

Inventor： 최승현 ,  김재현 ,  주인원 ,  이상욱 ,  신천식 ,  김재훈

IPC: H04L7/08 ,  H04B1/06

CPC classification number: H04L7/041 ,  G01S19/13 ,  H04L7/0079

Abstract: PURPOSE: A method and an apparatus for synchronizing a frame and a bit of a satellite navigation receiver are provided to synchronize the frame and the bit by generating a preamble of a bit stream based on the bit stream of a message. CONSTITUTION: An oversampled preamble(303) is generated based on a bit stream of an input message. A first correlative value is generated by correlating a par of the input message. The first correlative value is compared with a threshold value. If the first correlative value exceeds the threshold value, a second correlative value is generated by correlating a part of the input message with the preamble which is jumped with a constant interval. The second correlative value is compared with the threshold value. If the second correlation value exceeds the threshold value, a success of the bit and frame synchronization is declared when the second correlation value exceeds the threshold value. The generated preamble is oversampled based on the sampling ratio of the bit stream of the input message.

Abstract translation: 目的：提供一种用于同步卫星导航接收机的帧和位的方法和装置，以通过基于消息的比特流生成比特流的前同步码来使帧和比特同步。 构成：基于输入消息的比特流生成过采样前同步码（303）。 通过将输入消息的参数相关联来生成第一相关值。 将第一相关值与阈值进行比较。 如果第一相关值超过阈值，则通过将输入消息的一部分与以恒定间隔跳跃的前导码相关联来生成第二相关值。 将第二个相关值与阈值进行比较。 如果第二相关值超过阈值，则当第二相关值超过阈值时，声明比特和帧同步的成功。 基于输入消息的比特流的采样比，产生的前同步码被过采样。

公开(公告)号：KR100946929B1

公开(公告)日：2010-03-09

申请号：KR1020070099467

申请日：2007-10-02

Applicant: 한국전자통신연구원

Inventor： 김재현 ,  신천식 ,  이상욱 ,  김재훈

IPC: G01S5/14

Abstract: GNSS 항법 수신기 및 그 운용 방법을 개시한다. 본 발명의 GNSS 항법 수신기는, 현재의 시간 및 위치를 추정하는 시간 및 위치 추정부; 추정된 상기 시간 및 상기 위치를 이용하여, 이퍼머리스 정보를 생성하는 이퍼머리스 정보 생성부; 및 상기 생성된 이퍼머리스 정보에 기초하여, 내비게이션 정보 생성과 관련된 동작 모드를 핫 스타트 모드로 결정하는 제어부를 포함한다.
위성 항법, TTFF, 이퍼머리스(ephemeris), 시간 추정, 위치 추정