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    • 41. 发明公开
    • 다중 입출력-오에프디엠을 검증하기 위한 시스템 및 그검증방법
    • MIMO-OFDM验证系统及其方法
    • KR1020070091755A
    • 2007-09-12
    • KR1020060021266
    • 2006-03-07
    • 에스케이텔레콤 주식회사
    • 유태호김정김성근박용길오세현
    • H04B17/00H04B7/04H04L27/26
    • H04L25/0202H04B7/0413H04L27/26
    • An MIMO(Multiple Input Multiple Output)-OFDM(Orthogonal Frequency Division Modulation) verification system and a method thereof are provided to analyze the signal quality of an MIMO-OFDM system and verify an MIMO channel by verifying the quality of Tx/Rx data for which A/D(Analog/Digital) conversion has been executed by a MIMO-OFDM block. A MIMO-OFDM verification system for verifying the data converted by an MIMO-OFDM block(101) comprises a data loading part(1031), a transmission verification part(1033), an MIMO channel estimation part(1035), and a reception verification part(1037). The data loading part(1031) accesses the MIMO-OFDM block(101) and creates the converted data into WiBro-type data through a splitting and conversion process. The transmission verification part(1033) modulates and verifies the data, which have passed through the splitting and conversion process, according to QPSK, 16QAM, 640QAM schemes and mapping rules of gray codes and outputs results through a output part(105). The MIMO channel estimation part(1035) estimates channels of the loaded data according to uplink/downlink frames and outputs them through the output part(105). The reception verification part(1037) restores symbol timing of the loaded data, estimates a frequency offset, analyzes data quality, and outputs results through the output part(105).
    • 提供MIMO(多输入多输出)-OFDM(正交频分调制)验证系统及其方法,以分析MIMO-OFDM系统的信号质量,并通过验证MIMO / OFDM数据的质量来验证MIMO信道 哪个A / D(模拟/数字)转换已经由MIMO-OFDM块执行。 用于验证由MIMO-OFDM块(101)转换的数据的MIMO-OFDM验证系统包括数据加载部分(1031),传输验证部分(1033),MIMO信道估计部分(1035)和接收验证 部分(1037)。 数据加载部分(1031)访问MIMO-OFDM块(101),并通过分割和转换处理将转换的数据创建成WiBro型数据。 传输验证部分(1033)根据QPSK,16QAM,640QAM方案和通过输出部分(105)的灰度代码和输出结果的映射规则来调制和验证已经通过分离和转换处理的数据。 MIMO信道估计部(1035)根据上行/下行帧估计加载数据的信道,并通过输出部(105)输出。 接收验证部(1037)恢复加载数据的符号定时,估计频率偏移,分析数据质量,并通过输出部(105)输出结果。
    • 42. 发明授权
    • 갭필러에서 엘앤비 주파수 에러를 측정하기 위한 시스템 및방법
    • 用于测量带隙填充器中的LNB频率误差的系统及其方法
    • KR100749668B1
    • 2007-08-14
    • KR1020050046415
    • 2005-05-31
    • 에스케이텔레콤 주식회사
    • 이영수오세현하성호이병석전성훈김경준
    • H04N7/20
    • 본 발명에서 갭필러에서 엘앤비 주파수 에러를 측정하기 위한 시스템 및 방법이 개시된다. 개시된 위성방송 시스템에서 LNB(Low Noise Block Down Converter)의 주파수 에러를 정확히 측정하기 위한 갭필러는 위성수신용 안테나의 피드혼에 연결되어 수신된 주파수를 위성수신기의 주파수로 변환하기 위한 LNB로부터 중간주파수를 수신하여 신호복조 및 신호에러를 정정하기 위한 TDM(Time Division Multiple) 튜너로부터 반송파 복구로 인해 감지된 주파수 에러신호, 중간주파수가 AFC(Automatic Frequency Control) 회로를 거치면서 감지되는 주파수 에러신호, 및 각종 설정값들을 LNB 주파수 에러값을 측정하기 위한 파라미터로 활용하여 마이크로프로세서에 설정된 소정의 연산 알고리즘에 의해 LNB의 주파수 에러값을 매우 정확히 측정할 수 있다. 이로써, LNB를 장시간 사용하게 되면서 소자의 열화로 인해 발생하는 주파수 에러값을 측정하여 LNB의 교체주기를 정확히 파악할 수가 있어서 효율적인 위성 서비스망을 설계할 수 있게 된다.
      갭필러, 주파수에러
    • 43. 发明公开
    • 영상인식을 이용한 개인인증 및 전자서명 시스템 및 그방법
    • 使用图像识别的个人认证和电子签名系统及其方法
    • KR1020070080066A
    • 2007-08-09
    • KR1020060011141
    • 2006-02-06
    • 에스케이텔레콤 주식회사
    • 이성훈오세현김성근이동학박용길이군섭조남익이상화
    • H04W12/06G06F15/00
    • G06K9/00
    • A system and a method for authenticating a user and an electronic signature with image recognition are provided to realize a safe and stable authentication system in a mobile terminal by using a portable image medium and a transmitter. A mobile terminal(10) captures and transmits the image used as an authentication image by user operation. An image recognition server(20) estimates projection transformation relation between an image stored in a database and the image received from the mobile terminal by extracting/comparing SIFT(Scale Invariant Feature Transform) feature vector from the received image with the SIFT feature vector of the authentication images stored in the database, and using position relation of the SIFT feature vectors. An authentication server(30) transmits a result to the mobile terminal by determining the unique image of the user and authenticating the user/electronic signature based on the estimated projection transformation relation.
    • 提供了一种用于认证用户的系统和方法以及具有图像识别的电子签名,以通过使用便携式图像介质和发送器来实现移动终端中的安全和稳定的认证系统。 移动终端(10)通过用户操作捕捉并发送用作认证图像的图像。 图像识别服务器(20)通过从接收到的图像中提取/比较SIFT(尺度不变特征变换)特征向量与SIFT特征矢量,来估计存储在数据库中的图像与从移动终端接收的图像之间的投影变换关系 认证图像存储在数据库中,并使用SIFT特征向量的位置关系。 认证服务器(30)通过基于估计的投影变换关系确定用户的唯一图像并认证用户/电子签名来向移动终端发送结果。
    • 44. 发明授权
    • 멀티캐스트 서비스에서 주문형 다운로드 서비스를 제공하는방법 및 시스템
    • 下载服务器下载服务
    • KR100747706B1
    • 2007-08-08
    • KR1020060011620
    • 2006-02-07
    • 에스케이텔레콤 주식회사
    • 고강일이명성오세현김성근이동학박성수
    • H04W8/24H04W4/06H04W4/12
    • A method for supplying an on-demand download service in a multicast service and a system therefor are provided to transmit a contents download notify message to users existing in the same cell and user terminals when random contents are downloaded through the user terminals, thus various users can download the same contents at the same time. When user terminal clients(100) conduct contents registration by selecting desired contents and the transmission time when users wants to receive the contents after accessing a web server(124), a notification message is transmitted to more than one subscriber terminal client of RASs(Radio Access Stations) where the user terminal clients are located. Until the transmission time comes, download request response messages are received from the subscriber terminal clients who receive the notification message. At the transmission time, the contents are simultaneously transmitted to the user terminal clients and the subscriber terminal clients.
    • 提供了一种用于在多播服务中提供点播下载服务的方法及其系统,用于当通过用户终端下载随机内容时向存在于相同小区中的用户和用户终端发送内容下载通知消息,因此各种用户 可以同时下载相同的内容。 当用户终端客户端(100)通过在访问web服务器(124)之后选择期望的内容和用户想要接收内容的发送时间来进行内容注册时,将通知消息发送到RAS(Radio 访问站),用户终端客户端所在的位置。 在传输时间到来之前,从接收通知消息的订户终端客户端接收下载请求响应消息。 在发送时,内容被同时发送给用户终端客户和用户终端客户。
    • 45. 发明公开
    • 이동통신망을 이용한 역방향 콜 감시 시스템
    • 使用移动网络监控反向呼叫信息的系统
    • KR1020070075180A
    • 2007-07-18
    • KR1020060003648
    • 2006-01-12
    • 에스케이텔레콤 주식회사
    • 이춘성오세현하성호이병석김경준
    • H04W16/22H04W24/00
    • A reverse call monitoring system using a mobile communication network is provided to remotely operate call counter equipments installed in all base stations, by using one management network through national wire/wireless networks, thereby magnifying equipment efficiency as reducing operation costs. A call counter(107) performs a call count function for a reverse traffic channel in connection with a BTS(Base Transceiver System)(101). A distributor(115) transmits the counted results of the counter to a network. A CCU(Communication Control Unit)(109) receives the counted results by region through a preset communication line, by interworking with an MSC(Mobile Switching Center)(105). A DB server(111) receives the counted results by region to store/manage the received results. A client terminal(113) observes the counted results in real time, or observes and analyzes processing information on the previously stored counted results.
    • 提供使用移动通信网络的反向呼叫监控系统,通过国家有线/无线网络使用一个管理网络来远程操作安装在所有基站中的呼叫计数器设备,从而将设备效率放大为降低运营成本。 呼叫计数器(107)对于与BTS(基站收发器系统)(101)相关的反向业务信道执行呼叫计数功能。 分发器(115)将计数器的计数结果发送到网络。 CCU(通信控制单元)(109)通过与MSC(移动交换中心)(105)的互通,通过预设的通信线路接收每个区域的计数结果。 DB服务器(111)按区域接收计数的结果以存储/管理接收到的结果。 客户终端(113)实时观察计数结果,或观察并分析关于先前存储的计数结果的处理信息。
    • 46. 发明公开
    • 사용료의 동적 과금을 위한 패킷 데이터 서비스 시스템 및방법
    • 分组数据服务系统和服务费用动态计费方法
    • KR1020070074929A
    • 2007-07-18
    • KR1020060003087
    • 2006-01-11
    • 에스케이텔레콤 주식회사
    • 한상진오세현하성호양호진
    • H04W4/26H04L12/14H04W4/24
    • H04M15/12H04W88/18
    • A packet data service system for dynamic accounting of communication charges and a method therefor are provided to apply differential charges according to the remaining resources of the system, so as to increase usage efficiency of the system and to make a mobile communication subscriber use packet data at low cost. When a particular mobile communication terminal is connected, the current packet usage information of a serving base station for the terminal is obtained(S101,S103). According to the obtained current packet usage, charge information on usage of a packet data transceiving service of the terminal is determined, and the determined charge information is provided to the terminal(S105). According to a packet data transceiving service execution request of the terminal, the packet data transceiving service is provided, and transceived packet usage information for the terminal is sent to an accounting server together with the charge information transmitted to the terminal(S107-S111).
    • 提供用于通信费用的动态计费的分组数据服务系统及其方法,以根据系统的剩余资源应用差分费用,从而提高系统的使用效率,并使移动通信用户使用分组数据 低成本。 当连接特定的移动通信终端时,获得用于终端的服务基站的当前分组使用信息(S101,S103)。 根据获得的当前分组使用,确定终端的分组数据收发服务的使用的收费信息,并向终端提供确定的收费信息(S105)。 根据终端的分组数据收发服务执行请求,提供分组数据收发业务,并将终端的收发分组使用信息与发送给终端的收费信息一起发送给计费服务器(S107〜S111)。
    • 47. 发明授权
    • 이동통신 단말을 이용한 이동 통신망의 품질 측정 방법과이를 위한 이동통신 단말
    • 이동통신단말을이용한이동통신망의품질측정방법과이를위한이동통신단말
    • KR100731889B1
    • 2007-06-25
    • KR1020060001614
    • 2006-01-06
    • 에스케이텔레콤 주식회사
    • 박영호박주열김정철오세현이명성정기모임철호장병렬
    • H04B17/00H04B1/40
    • A quality measurement method of a mobile communication network using a mobile communication terminal and the mobile communication terminal thereof are provided to enable the terminal to measure quality of communication networks according to preset conditions, so that the measured information can be used for managing the quality of the mobile communication networks. Preset speech quality measurement conditions which include quality measurement target regions and quality measurement periods are stored(S101). If a terminal is located within a particular base station region which is a quality measurement target region, quality of a mobile communication network for uplink is measured when origination/reception signals are generated(S103-S107). If a preset quality measurement period is set, quality of the communication network for downlink and an equivalent location are measured(S109,S111). The measured quality information and the location information are sent to a quality management server which manages the quality of the communication network(S113).
    • 提供了一种使用移动通信终端的移动通信网络的质量测量方法及其移动通信终端,以使得终端能够根据预设条件来测量通信网络的质量,使得所测量的信息可以用于管理通信网络的质量 移动通信网络。 存储包括质量测量目标区域和质量测量周期的预设话音质量测量条件(S101)。 如果终端位于作为质量测量目标区域的特定基站区域内,则在生成始发/接收信号时测量用于上行链路的移动通信网络的质量(S103-S107)。 如果设置了预设的质量测量周期,则测量下行链路和等效位置的通信网络的质量(S109,S111)。 所测量的质量信息和位置信息被发送到管理通信网络的质量的质量管理服务器(S113)。