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公开(公告)号：KR101364390B1
公开(公告)日：2014-02-18
申请号：KR1020070069112
申请日：2007-07-10
Applicant: 삼성전자주식회사
CPC classification number: H04B10/116 , H04B10/1149 , H04B17/23 , H04B17/318
Abstract: 본 발명은 가시광 통신 시스템에 있어서, 송신측으로부터 다수의 프레임으로 구성된 특정의 데이터를 수신하는 과정과, 상기 송신측으로부터 측정된 RSSI(Received Signal Strength Indication:수신신호강도)신호를 체크 및 변환하는 과정과, 상기 특정 데이터의 각 프레임이 순차적으로 수신되는 시점마다, 상기 변환된RSSI를 확인하여, 각 프레임별 해당 통신채널의 상태를 차별화하여 가시광으로 표시하는 가시적인 (visible)신호의 수준을 결정하여 이를 상기 송신측으로 전송하는 과정과, 상기 특정 데이터의 수신이 완료되면, 상기 수신 완료된 특정의 데이터에 대한 수신 성공 여부에 따라 해당 응답메시지를 상기 송신측으로 전송하는 과정을 포함함을 특징으로 하는 가시광 통신 시스템에서 데이터 전송 프레임을 위한 가시적인 신호 생성 방법 및 장치에 관한 것이다.
가시광통신, 가시적인 신호, ACK, NACK-
公开(公告)号：KR101364393B1
公开(公告)日：2014-02-17
申请号：KR1020070072234
申请日：2007-07-19
Applicant: 삼성전자주식회사
IPC: H04B10/116 , H04B10/00
CPC classification number: H04B10/116 , H04B10/1149
Abstract: 가시광 통신(Visible Light Communication)에서 통신 링크의 정렬을 위한 방법에 있어서, VLC(Visible Light Communication) XID(Exchange Identification) 프레임은 할당된 시간 슬롯(Time Slot) 내에서 송신측(Primary) 장치와 수신측(Secondary) 장치의 전송 타이밍을 동기화하여, 송신측 장치와 수신측 장치가 데이터 전송에 필요한 동작을 할 수 있도록 시간을 확보하는 과정과, 송신측 장치에서 수신측 장치로 XID 명령(Command) 프레임을 송신하면, XID 명령 프레임을 수신한 수신측 장치에서 송신측 장치로 XID 응답 프레임을 송신하는 과정과, XID 명령 또는 XID 응답 프레임을 송신한 후에 할당된 시간 슬롯의 남은 공간의 가시성을 높이기 위해 가시성 필드(Visibility Field)를 사용하여 할당된 시간 슬롯의 남은 공간을 채우는 과정을 포함하는 것을 특징으로 한다.
가시광 통신, Device Discovery, 가시성 필드-
公开(公告)号：KR1020090011203A
公开(公告)日：2009-02-02
申请号：KR1020070074567
申请日：2007-07-25
Applicant: 삼성전자주식회사
CPC classification number: H04B10/116 , H04B10/1143 , H04W4/06 , H04W8/005 , H04W8/26 , H04W74/00
Abstract: A visible communication method in a visible light communication system is provided to give the visibility to a link by applying the IrLAP(IrDA Link Access Protocol) of an infrared communication system. A responder(612) desiring communication outputs a visible frame at a desired time(614). An initiator(610) desiring communication broadcasts a D-XID(Discovery eXchange station IDentification) frame to transmit it repetitively as much as preset times(616,618,622). The responder recognizes the D-XID frame received from the initiator, and then transmits D-R-XID as a response frame to the D-XID frame if it desires the communication(620). The initiator receives the D-R-XID frame from the responder, prepares a discovery log, notifies a service application that the responder exists, and then is changed into a connection set-up mode.
Abstract translation: 提供可见光通信系统中的可视通信方法，以通过应用红外通信系统的IrLAP（IrDA链路接入协议）来给出链路的可见性。 响应者（612）期望通信在期望的时间输出可见帧（614）。 期望通信的发起者（610）广播D-XID（发现交换站识别）帧以重复地发送预设时间（616,618,622）。 响应者识别从发起者接收到的D-XID帧，然后如果需要通信，则将D-R-XID作为响应帧发送到D-XID帧（620）。 启动器从应答器接收D-R-XID帧，准备发现日志，通知应用程序存在的服务应用程序，然后更改为连接建立模式。
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Patent Agency Ranking
公开(公告)号：KR1020090005520A
公开(公告)日：2009-01-14
申请号：KR1020070068621
申请日：2007-07-09
Applicant: 삼성전자주식회사
CPC classification number: H04B10/116 , H04B10/1149
Abstract: A re-connection method of a peripheral device interface using the visible light communication is provided to enable a user to recognize connection release by using the characteristics of the visible light communication in case a communication link is canceled between the first device and the second device. In case an ACK message does not reach by the inconsistency of a communication link between transmitting and receiving units by while two devices is performing data communication(410-430), the first device waits as much as an RTT(Round Trip Time), and then performs re-transmission(440). If the communication link between the first and second devices is canceled, the first device transmits a connection release warning and instructing message to the second device(450). The second device confirms the warning instruction light, grasps that the connection of the communication link is canceled, and then arranges the communication link between the devices to receive an R-XID message from the first device(460). The second device transmits a response message including an R-XID response message to the connection release warning and instructing message(470).
Abstract translation: 提供使用可见光通信的外围设备接口的重新连接方法，以便在第一设备和第二设备之间的通信链路被取消的情况下，用户能够通过使用可见光通信的特性来识别连接释放。 在两个设备正在执行数据通信（410-430）的情况下，由于发送和接收单元之间的通信链路的不一致而不能达到ACK消息，所以第一设备等待RTT（往返时间），并且 然后执行重传（440）。 如果第一和第二设备之间的通信链路被取消，则第一设备向第二设备发送连接释放警告和指示消息（450）。 第二设备确认警告指示灯，并抓住通信链路的连接被取消，然后在设备之间布置通信链路以从第一设备（460）接收R-XID消息。 第二设备向连接释放警告和指示消息（470）发送包括R-XID响应消息的响应消息。
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公开(公告)号：KR100876725B1
公开(公告)日：2008-12-31
申请号：KR1020070051736
申请日：2007-05-28
Applicant: 삼성전자주식회사
IPC: H04B7/26
Abstract: 본 발명은 가시광 통신을 이용한 무선 랜 시스템에서 통신 링크 연결 방법에 있어서, 모바일 노드(Mobile Node)가 엑세스 포인트(Access Point)에서 발생 되는 가시광 신호를 수신 가능한지 판단하는 과정과, 모바일 노드에서 엑세스 포인트와 동기화(Synchronization) 작업을 수행하는 과정과, 모바일 노드 내의 가시광 송신부에서 통신 링크 정렬을 위한 지시광을 발생시키는 과정과, 지시광을 이용하여 업링크(Uplink) 방향의 통신 링크를 설정하는 과정을 포함한다.
가시광 통신, LED, XID, 링크, 무선 랜Abstract translation: 提供了一种使用可见光通信来连接无线LAN（局域网）系统中的通信链路的方法，以使用可见光通信在无线LAN系统中提供可见光无线LAN协议的呼叫设置过程并且布置 通过使用户可视地确认可见光的位置和范围来实现通信链路。 一种使用可见光通信连接无线LAN系统中的通信链路的方法包括以下步骤：判断移动节点是否可能接收在接入点发生的可见光信号（415）; 执行与移动节点中的接入点的同步，并生成用于在移动节点（420）的可见光发送单元处布置通信链路的指示灯; 以及通过使用指示灯来建立上行链路方向的通信链路。
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公开(公告)号：KR1020080108732A
公开(公告)日：2008-12-16
申请号：KR1020070056679
申请日：2007-06-11
Applicant: 삼성전자주식회사
IPC: H04B10/116 , H04B10/40
Abstract: A data transmitting/receiving method in a visible light communications system and an apparatus thereof are provided to perform communication in a communications channel by using the visible light through the operation procedure of the data transmitting/receiving method in a visible light communications system. A preamble(510) includes signal in which 1 and 0 are repeated as predetermined bit number. An STA includes the specific bit string and informs the beginning of the frame. An infoblock(530) expresses the information of a visible pattern block. A visible pattern block(540) defines as a code which does not use in a 8B10B coded system. An STO(550) includes the specific bit string and informs the end of frame.
Abstract translation: 提供了一种可见光通信系统中的数据发送/接收方法及其装置，用于通过可见光通信系统中的数据发送/接收方法的操作过程，通过使用可见光来在通信信道中进行通信。 前导码（510）包括以预定比特数重复1和0的信号。 STA包括特定的比特串并通知帧的开头。 信息块（530）表示可见模式块的信息。 可视图案块（540）定义为在8B10B编码系统中不使用的代码。 STO（550）包括特定的比特串并通知帧的结尾。
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公开(公告)号：KR1020070078620A
公开(公告)日：2007-08-01
申请号：KR1020060009045
申请日：2006-01-27
Applicant: 삼성전자주식회사
IPC: H04B10/2581 , H04B10/25
CPC classification number: H04J14/0226 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J14/0298 , H04Q11/0067 , H04Q11/0071
Abstract: A composite passive optical network is provided to remarkably reduce the number of necessary upstream light sources by making ONUs(Optical Network Units) create subcarriers and transmit them to an RN(Remote Node) through electrical lines and making the RN modulate the subcarriers and create upstream optical signals. A composite passive optical network consists of a CO(Central Office)(210), an RN(250), and a plurality of ONU groups(300-1-300-N). The CO(210) outputs downstream optical signals. The RN(250) executes wavelength division demultiplexing for the downstream optical signals inputted from the CO(210), performs power splitting for each multiplexed signal, and creates a plurality of downstream signals. Then, the RN(250) outputs the created downstream signals to the ONUs of each associated group(300-1-300-N), receives upstream subcarriers from the ONUs of each group(300-1-300-N), modulates them into upstream optical signals, and outputs them to the CO(210). Each of the ONUs of each group(300-1-300-N) obtains the downstream subcarriers of each associated group from an associated downstream optical signal inputted from the RN(250), filters the obtained downstream subcarriers, obtains an associated downstream subcarrier, and outputs an associated upstream subcarrier to the RN(250).
Abstract translation: 提供一种复合无源光网络，通过使ONU（光网络单元）创建子载波并通过电线将其发送到RN（远程节点），使RN调制子载波并创建上行，显着减少必要的上游光源数量 光信号。 复合无源光网络由CO（中心局）（210），RN（250）和多个ONU组（300-1-300-N）组成。 CO（210）输出下行光信号。 RN（250）对从CO（210）输入的下行光信号执行波分解复用，对每个多路复用信号执行功率分配，并产生多个下行信号。 然后，RN（250）向每个关联组（300-1-300-N）的ONU输出创建的下行信号，从每组ONU（300-1-300-N）接收上行子载波，对它们进行调制 进入上行光信号，并将其输出到CO（210）。 每组ONU（300-1-300-N）从RN（250）输入的相关联的下行光信号中获取每个关联组的下行子载波，对所获得的下行子载波进行滤波，获得相关联的下行子载波， 并将相关联的上行子载波输出到RN（250）。
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公开(公告)号：KR100678024B1
公开(公告)日：2007-02-02
申请号：KR1020060013049
申请日：2006-02-10
Applicant: 삼성전자주식회사
IPC: H04J14/02 , H04B10/2581
Abstract: A hybrid passive optical network using a wireless communication is provided to minimize an optical interference noise and the number of uplink optical sources by transmitting uplink sub carriers generated in optical network units to a local station and generating uplink optical signals modulated to the uplink subcarriers at the local station. A central base station(210) transmits a downlink optical signal. A local base station(250) wavelength-division-demultiplexes the downlink optical signal received from the central base station(210). The local base station(250) generates a plurality of downlink optical signals by dividing the demultiplexed downlink optical signal. The local base station(250) transmits the plurality of downlink optical signals to optical network units(290-1-1 to 290-N-M) of a corresponding group(290-1 to 290-N). The local base station(250) generates the corresponding optical signal modulated to uplink sub carriers of the corresponding group(290-1 to 290-N). The local base station(250) transmits the plurality of generated uplink optical signals to the central base station(210). The optical network units(290-1-1 to 290-N-M) of a plurality of groups(290-1 to 290-N) acquire downlink sub carriers of the corresponding group(290-1 to 290-N) from the corresponding downlink optical signal received from the local base station(250), and acquire the corresponding sub carriers by filtering the downlink sub carriers of the corresponding group(290-1 to 290-N). The optical network units(290-1-1 to 290-N-M) of the plurality of groups(290-1 to 290-N) transmit the corresponding uplink sub carriers to the local base station(250) by wireless.
Abstract translation: 提供使用无线通信的混合无源光网络，以通过将在光网络单元中生成的上行链路子载波发送到本地站并且生成调制到上行链路子载波上的上行链路光信号来最小化光学干扰噪声和上行链路光源的数量 本地站。 中央基站（210）发送下行链路光信号。 本地基站（250）对从中央基站（210）接收的下行链路光信号进行波分解复用。 本地基站（250）通过划分解复用的下行链路光信号来生成多个下行链路光信号。 本地基站（250）将多个下行链路光信号发送到对应组（290-1到290-N）的光网络单元（290-1-1到290-N-M）。 本地基站（250）产生相应的光信号，该相应的光信号被调制到对应组（290-1到290-N）的上行链路子载波。 本地基站（250）将所生成的多个上行链路光信号发送到中央基站（210）。 多个组（290-1至290-N）的光网络单元（290-1-1至290-NM）从对应的下行链路（290-1至290-N）获取对应组（290-1至290- 从本地基站（250）接收光信号，并通过对相应组（290-1至290-N）的下行链路子载波进行滤波来获取对应的子载波。 多个组（290-1到290-N）的光网络单元（290-1-1到290-N-M）通过无线方式将对应的上行链路子载波发送到本地基站（250）。
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