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公开(公告)号：WO2011034389A2
公开(公告)日：2011-03-24
申请号：PCT/KR2010/006446
申请日：2010-09-17
IPC: H04B11/00
CPC classification number: H04B11/00
Abstract: 전파의 차폐가 심하여 전파를 이용한 무선 통신이 어려운 환경에서 초음파를 이용하여 통신을 수행하는 기술이 개시된다. 본 발명에 따른 초음파 단말기는 전파의 차폐가 심한 환경 내에서 고체 구조물을 매질로 하여 초음파를 전송하고, 초음파 기지국은 고체 구조물을 매질로 하여 초음파를 수신한다.
Abstract translation: 公开了一种在无线电波被严重阻挡的环境中使用超声波进行通信的技术，因此难以进行无线通信。 根据本发明，在无线电波被严重阻挡的环境中，使用超声波的终端经由作为介质的固体结构发送超声波，使用超声波的基站通过作为 一种媒介
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公开(公告)号：KR100914316B1
公开(公告)日：2009-08-27
申请号：KR1020070097881
申请日：2007-09-28
Applicant: 한국전자통신연구원
CPC classification number: H04L27/3494 , H04L27/3405
Abstract: 위상 오차에 의한 수신 성능의 저하를 최소화하는 이진 신호 변조 장치가 개시된다.
이진 신호 변조 장치는 이진 신호를 수신하고, 이진 신호를 소정의 매핑 관계에 따라 복소 심볼로 변환한다. 이때, 매핑 관계는 복소 평면 상의 복수의 포인트에서 각각 시작하고 궤적간 거리가 복수의 포인트 사이의 거리 중 최소 거리 이상이 되도록 형성되는 복수의 궤적에서, 매핑 심볼간 거리가 소정의 거리 이상이 되고 매핑 심볼간 위상이 소정의 각도 이상이 되도록 복수의 궤적의 각각에 복수의 매핑 심볼이 배치됨으로써 형성된다.
디지털 변조, QAM-
公开(公告)号：KR101379983B1
公开(公告)日：2014-04-10
申请号：KR1020100088389
申请日：2010-09-09
Applicant: 한국전자통신연구원
IPC: H04B11/00
CPC classification number: H04B11/00
Abstract: 전파의 차폐가 심하여 전파를 이용한 무선 통신이 어려운 환경에서 초음파를 이용하여 통신을 수행하는 기술이 개시된다. 본 발명에 따른 초음파 단말기는 전파의 차폐가 심한 환경 내에서 고체 구조물을 매질로 하여 초음파를 전송하고, 초음파 기지국은 고체 구조물을 매질로 하여 초음파를 수신한다.
Abstract translation: 在无线电波的一个困难的无线电通信的使用超声被用于繁殖技术恶劣环境提供了一种用于执行通信屏蔽。 根据本发明的超声波装置包括：发送超声波到固体结构中的无线电波的屏蔽的介质，和严重的环境中，超声BS接收超声波到固体结构的平台。
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公开(公告)号：KR101393846B1
公开(公告)日：2014-05-14
申请号：KR1020130142459
申请日：2013-11-21
Applicant: 한국전자통신연구원
CPC classification number: H04B11/00
Abstract: 전파의 차폐가 심하여 전파를 이용한 무선 통신이 어려운 환경에서 초음파를 이용하여 통신을 수행하는 기술이 개시된다. 본 발명에 따른 초음파 단말기는 전파의 차폐가 심한 환경 내에서 고체 구조물을 매질로 하여 초음파를 전송하고, 초음파 기지국은 고체 구조물을 매질로 하여 초음파를 수신한다.
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Patent Agency Ranking
公开(公告)号：KR1020080055607A
公开(公告)日：2008-06-19
申请号：KR1020070097881
申请日：2007-09-28
Applicant: 한국전자통신연구원
CPC classification number: H04L27/3494 , H04L27/3405
Abstract: A method for deciding the position of mapping symbols, and an apparatus and a method for modulating binary signals are provided to enhance reception capability by implementing constellation in order to minimize symbol error probability when a phase error is in a reception signal. In a method for deciding the position of mapping symbols for mapping binary signals on a complex plane, plural locuses are started from plural points on the complex plane and represented to implement a distance between locuses more than a minimum distance among the plural points(S110). To implement the distance between locuses more than a predetermined distance and a phase between mapping symbols more than a predetermined angle at respective locuses, the position of plural mapping symbols for mapping binary signals is decided(S120).
Abstract translation: 提供了用于确定映射符号的位置的方法，以及用于调制二进制信号的装置和方法，以通过实现星座来增强接收能力，以便当相位误差处于接收信号时使符号错误概率最小化。 在用于确定用于在复平面上映射二进制信号的映射符号的位置的方法中，从复平面上的多个点开始多个位置，并表示为在多个点之间的位置之间的距离大于最小距离（S110） 。 为了在各个位置实现超过预定距离的位置之间的距离和多于一个预定角度的映射符号之间的相位，决定了用于映射二进制信号的多个映射符号的位置（S120）。
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公开(公告)号：KR100832537B1
公开(公告)日：2008-05-27
申请号：KR1020060121050
申请日：2006-12-01
Applicant: 한국전자통신연구원
CPC classification number: H04L47/10 , H04L43/0882 , H04L47/14 , H04L47/2416 , H04L47/25 , H04L65/4084 , H04L65/602 , H04L65/80
Abstract: A multimedia data streaming server for varying the amount of data transmission according to a network bandwidth condition and a method thereof are provided to analyze the network bandwidth condition by itself, thereby detecting a change of the network bandwidth condition more quickly. A streaming server acquires and transmits multimedia data in response to the streaming request of the multimedia data of a multimedia reproduction apparatus(S31). The streaming server monitors a network bandwidth condition periodically(S32). The streaming server checks whether the network bandwidth condition is more deteriorated than a former network bandwidth condition(S33). The streaming server checks whether the amount of data, which can be transmitted through a current network bandwidth, is smaller than a default value and checks whether a transmission level suitable for the current network bandwidth condition is a default level when the network bandwidth condition is deteriorated(S34). The streaming server sets the transmission level of the multimedia data to the default level, and acquires and transmits the multimedia data at the default level when the transmission level suitable for the current network bandwidth condition is the default level(S35). The streaming server transmits multimedia data at a transmission level above the current transmission level when the transmission level suitable for the current network bandwidth condition is not the default level(S36). The streaming server transmits multimedia data at a transmission level below the current transmission level when the network bandwidth condition is improved(S37,S38). The streaming server transmits the multimedia data maintaining the current transmission level when the network bandwidth condition is identical with a former network bandwidth condition(S39).
Abstract translation: 提供一种用于根据网络带宽条件改变数据传输量的多媒体数据流服务器及其方法，以便自己分析网络带宽状况，从而更快地检测网络带宽状况的变化。 流服务器响应于多媒体再现设备的多媒体数据的流请求而获取和发送多媒体数据（S31）。 流服务器周期性地监视网络带宽状况（S32）。 流服务器检查网络带宽状况是否比以前的网络带宽条件恶化（S33）。 流服务器检查当前网络带宽可以传输的数据量是否小于默认值，并检查当网络带宽条件恶化时，适用于当前网络带宽条件的传输级别是否为默认级别 （S34）。 流媒体服务器将多媒体数据的传输级别设置为默认级别，并且当适合当前网络带宽条件的传输级别为默认级别时，获取并发送默认级别的多媒体数据（S35）。 当适用于当前网络带宽条件的传输级别不是默认级别时，流服务器以高于当前传输级别的传输级别传输多媒体数据（S36）。 当网络带宽条件改善时，流服务器在低于当前传输级别的传输级别发送多媒体数据（S37，S38）。 当网络带宽条件与以前的网络带宽条件相同时，流服务器发送维持当前传输级别的多媒体数据（S39）。
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公开(公告)号：KR1020130135812A
公开(公告)日：2013-12-11
申请号：KR1020130142459
申请日：2013-11-21
Applicant: 한국전자통신연구원
CPC classification number: H04B11/00
Abstract: Disclosed is technology capable of performing a communication using an ultrasonic wave in an environment with the difficulty of a wireless communication using an electromagnetic wave due to electromagnetic wave shield. An ultrasonic terminal according to the present invention transmits the ultrasonic wave by a solid structure as a medium in the environment with the electromagnetic wave shield and an ultrasonic base station receives the ultrasonic wave by the solid structure as the medium.
Abstract translation: 公开了能够在由于电磁波屏蔽而使用电磁波的无线通信难的环境中使用超声波进行通信的技术。 根据本发明的超声波终端在具有电磁波屏蔽的环境中以固体结构作为介质发送超声波，并且超声波基站以固体结构作为介质接收超声波。
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公开(公告)号：KR1020110031098A
公开(公告)日：2011-03-24
申请号：KR1020100088389
申请日：2010-09-09
Applicant: 한국전자통신연구원
IPC: H04B11/00
CPC classification number: H04B11/00
Abstract: PURPOSE: A communication system using an ultrasonic wave that transmits data is provided to transmit data by using ultrasonic waves. CONSTITUTION: A transducer(251) converts a first ultrasonic wave to a first electric signal from an ultrasonic wave base station or a second ultrasonic wave terminal by using a solid medium. A receiving unit converts a first electric signal into first data. A transmission unit converts second data into a second electric signal. The transducer converts the first electric signal into a second ultrasonic wave. The transducer transmits the converted second ultrasonic wave to an ultrasonic base station and a second ultrasonic wave terminal by using a solid medium.
Abstract translation: 目的：提供使用发送数据的超声波的通信系统，通过超声波发送数据。 构成：传感器（251）通过使用固体介质将第一超声波从超声波基站或第二超声波端子转换为第一电信号。 接收单元将第一电信号转换为第一数据。 传输单元将第二数据转换为第二电信号。 换能器将第一电信号转换成第二超声波。 换能器通过使用固体介质将转换的第二超声波发送到超声波基站和第二超声波端子。
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公开(公告)号：KR100691288B1
公开(公告)日：2007-03-12
申请号：KR1020060041670
申请日：2006-05-09
Applicant: 한국전자통신연구원
Abstract: A conversion method into a coordinator from devices on a PicoNet is provided to enable the devices to sense that a PNC(PicoNet Coordinator) secedes from the PicoNet without performing a normal PNC handover procedure, for conversion into a new coordinator without influencing a service within the PicoNet. Up-to-date priority information is received from a PNC(301). P-CTA(Pseudo-static Channel Time Allocation) given to devices on a PicoNet is confirmed through a beacon of a superframe previously received from the PNC(302). As a new beacon is not received from the PNC, beacon non-reception notification information transmitted between the devices is detected during the confirmed P-CTA(303). As the beacon non-reception notification information is not detected, the devices do not convert into the PNC(304). As the beacon non-reception notification information is received, it is decided that the PNC secedes from the PicoNet without performing a normal PNC handover procedure, and the devices convert into the PNC according to top priority(305).
Abstract translation: 提供了一种从PicoNet上的设备转换为协调器的方法，以使设备能够感知PNC（PicoNet协调器）从PicoNet中脱离而不执行正常的PNC切换过程，用于转换为新的协调器而不影响 微微网。 从PNC（301）接收最新的优先级信息。 给予PicoNet上的设备的P-CTA（伪静态信道时间分配）通过先前从PNC接收到的超帧的信标来确认（302）。 由于没有从PNC接收新的信标，所以在确认的P-CTA期间检测到在设备之间传送的信标未接收通知信息（303）。 由于未检测到信标非接收通知信息，所以设备不转换成PNC（304）。 当接收到信标未接收通知信息时，确定PNC从PicoNet中脱离而不执行正常的PNC切换过程，并且设备根据最高优先级转换成PNC（305）。
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