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公开(公告)号：KR1020100066324A
公开(公告)日：2010-06-17
申请号：KR1020090069688
申请日：2009-07-29
Applicant: 한국전자통신연구원
CPC classification number: Y02D70/10 , H04W74/085
Abstract: PURPOSE: A method for transmitting data using a media-access-control protocol in a wireless network is provided to efficiently process a back-off operation by controlling the basic state of a channel with detailed conditions. CONSTITUTION: A beacon frame(400) is transmitted to a channel. A transmission quiet period is applied to the channel in order to measure the state of a wireless media which is defined at institute of electrical and electronics engineers(IEEE) 802.11h. Based on the starting point of an inter-frame space, a terminal requests a data transmission at one point(420). The busy state of the channel is terminated. A back-off operation(460) is performed. Data frames(470, 480) are transmitted.
Abstract translation: 目的：提供一种在无线网络中使用媒体访问控制协议传输数据的方法，以通过具有详细条件控制信道的基本状态来有效地处理退避操作。 构成：将信标帧（400）发送到信道。 为了测量在电气和电子工程师（IEEE）802.11h机构定义的无线介质的状态，将一个传输静默时段应用于信道。 基于帧间空间的起点，终端在一点请求数据传输（420）。 通道的忙碌状态终止。 执行退避操作（460）。 发送数据帧（470,480）。
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公开(公告)号：KR1020100058190A
公开(公告)日：2010-06-03
申请号：KR1020080116917
申请日：2008-11-24
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W72/10 , H04W72/08 , H04L1/0001 , H04W72/04
Abstract: PURPOSE: A data transmission/ receiving method in a wireless communication system and an apparatus thereof are provided to enhance the use of resources by selecting a modulation and encoding scheme in consideration of a channel state and the kind of data. CONSTITUTION: A data transmitting apparatus determines the priority of data(102). In addition, the data transmitting apparatus determines the priority of channels according to a channel state(104), and selects the modulation and encoding schemes for the data according to the priority(106). According to the channel priority, the apparatus selects the data transmission channel(108). The data transmitting apparatus transmits the data through the selected channel after modulating and encoding the data according to the modulation and encoding schemes(110).
Abstract translation: 目的：提供无线通信系统中的数据发送/接收方法及其装置，以便考虑到信道状态和数据种类，选择调制和编码方案来增强资源的利用。 构成：数据发送装置确定数据的优先级（102）。 此外，数据发送装置根据信道状态（104）确定信道的优先级，并且根据优先级（106）选择数据的调制和编码方案。 根据信道优先级，设备选择数据传输信道（108）。 数据发送装置根据调制和编码方案（110）对数据进行调制和编码之后，通过所选择的信道发送数据。
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公开(公告)号：KR100927735B1
公开(公告)日：2009-11-18
申请号：KR1020070122143
申请日：2007-11-28
Applicant: 한국전자통신연구원
IPC: H04B7/06
CPC classification number: H04B7/0691 , H04L47/50
Abstract: Provided are an apparatus and method for transmitting data using a multi-antenna. The apparatus includes a transmission buffer selecting unit for selecting transmission buffer of an antenna group corresponding to characteristics of each aggregated Medium access control Protocol Data Units (MPDU) when a list of aggregated MPDUs to transmit is received; a data transmitting unit for generating a list of aggregated MPDUs to transmit with storage information of the aggregated MPDUs, transferring the generated list to the transmission buffer selecting unit and transmitting corresponding aggregated MPDUs through the selected transmission buffer; and a timing controlling unit for controlling a transmission timing of each aggregated MPDU.
Abstract translation: 提供了一种使用多天线传输数据的设备和方法。 该装置包括传输缓冲器选择单元，用于当接收到聚合的MPDU的列表时，选择对应于每个聚合的媒体访问控制协议数据单元（MPDU）的特性的天线组的传输缓冲器; 数据发送单元，用于生成要与所聚合的MPDU的存储信息一起发送的聚合MPDU的列表，将所生成的列表转发到发送缓冲器选择单元，并且通过所选择的发送缓冲器发送相应的聚合MPDU; 以及定时控制单元，用于控制每个聚合MPDU的发送定时。
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公开(公告)号：KR1020090065063A
公开(公告)日：2009-06-22
申请号：KR1020070132494
申请日：2007-12-17
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W72/1278 , H04W28/20 , H04B7/2612 , H04L1/004
Abstract: A MAC(Media Access Control) protocol in a wireless local area network and a data transmission method using the same are provided to make a wireless LAN terminal device request allocation of necessary bandwidth by a super frame unit to allocate the bandwidth by a wireless LAN base station in order to release allocation of unnecessary bandwidth, thereby efficiently using a limited bandwidth. If there is an uplink which is not allocated to any terminal device, a wireless LAN terminal device transmits a BR(Bandwidth Request) frame to a wireless LAN base station requesting necessary bandwidth through a short uplink or the uplink(302,303). The wireless LAN base station allocates downlinks and uplinks of a new super frame properly for a bandwidth that each terminal device needs(304). The allocated information is reported to all terminal devices through a BSR frame(305).
Abstract translation: 提供无线局域网中的MAC（媒体访问控制）协议和使用该协议的数据传输方法，以使无线LAN终端设备通过超帧单元请求分配必需带宽，以通过无线LAN基地分配带宽 为了释放不必要的带宽的分配，从而有效地使用有限的带宽。 如果没有分配给任何终端设备的上行链路，则无线LAN终端设备通过短上行链路或上行链路（302,303）向无线LAN基站发送BR（带宽请求）帧，以请求必要的带宽。 无线LAN基站为每个终端设备所需的带宽正确地分配新的超帧的下行链路和上行链路（304）。 所分配的信息通过BSR帧向所有终端设备报告（305）。
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公开(公告)号：KR1020090059881A
公开(公告)日：2009-06-11
申请号：KR1020070126964
申请日：2007-12-07
Applicant: 한국전자통신연구원
CPC classification number: H04L7/0054 , H04L7/08 , H04W56/00 , H04W84/12
Abstract: A method and an apparatus for detecting a symbol boundary are provided to determine symbol synchronization according to a result by comparing a critical value with a difference between a previous detected peak value and a present detected peak value. A symbol synchronization device calculates a cross-correlation value about a received preamble(101). The symbol synchronization device searches a maximum peak value about a corrected real number component(102). A first peak value is stored in an A register(103). A second peak value is stored in a B register(104). A difference between the first peak value and the second peak value is calculated(105). An absolute value of the peak difference is compared with a first critical value for determining the first peak value as a symbol boundary(106). If the peak difference is less than the first critical value, the first peak value is compared with a second critical value for determining the first peak value as symbol synchronization(107). If the first peak value is larger than the second critical value, a position in which the first peak value is generated is determined as the symbol boundary for the symbol synchronization(108). If the first peak value is less than the second critical value, the second peak value is stored in the A register(109).
Abstract translation: 提供了用于检测符号边界的方法和装置，以便通过将临界值与先前检测到的峰值与当前检测到的峰值之间的差进行比较，根据结果来确定符号同步。 符号同步装置计算关于所接收的前导码的互相关值（101）。 符号同步装置搜索关于校正的实数分量（102）的最大峰值。 第一峰值存储在A寄存器（103）中。 第二峰值存储在B寄存器（104）中。 计算第一峰值和第二峰值之间的差值（105）。 将峰值差的绝对值与用于确定第一峰值作为符号边界的第一临界值进行比较（106）。 如果峰值差小于第一临界值，则将第一峰值与用于确定第一峰值作为符号同步的第二临界值进行比较（107）。 如果第一峰值大于第二临界值，则将产生第一峰值的位置确定为符号同步的符号边界（108）。 如果第一峰值小于第二临界值，则第二峰值存储在A寄存器（109）中。
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Patent Agency Ranking
公开(公告)号：KR1020090025788A
公开(公告)日：2009-03-11
申请号：KR1020070090906
申请日：2007-09-07
Applicant: 한국전자통신연구원
IPC: G06F11/30
CPC classification number: G06F21/56
Abstract: A method for detecting an abnormal process and an apparatus therefor are provided to detect a malicious behavior which produces the abnormal process in a normal process on the based on the execution time of a child process of a target process. A process monitoring unit(213) confirms a process generated in a computing environment. A target process selecting unit(211) selects a target process to be inspected among the processes confirmed in the process monitoring unit, in advance. A process creation time change monitoring unit(215) confirms whether the selected target process requests a creation time change. A creation time change preventing unit(217) prevents the change of creation time of the target process in case the target process requests the change of the creation time. An abnormal process detecting unit(219) determines that the child process of the target process is an abnormal process when the child process is generated within a preset reference time.
Abstract translation: 提供了用于检测异常处理的方法及其装置，用于根据目标处理的子进程的执行时间来检测在正常进程中产生异常处理的恶意行为。 过程监视单元（213）确认在计算环境中生成的处理。 目标处理选择单元（211）预先在处理监视单元中确认的处理中选择要检查的目标处理。 过程创建时间变化监视单元（215）确认所选择的目标进程是否请求创建时间改变。 创建时间变更阻止单元（217）在目标处理请求创建时间的改变的情况下防止目标进程的创建时间的改变。 当在预先设定的基准时间内生成子进程时，异常处理检测部（219）判定为目标处理的子进程为异常处理。
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公开(公告)号：KR100864867B1
公开(公告)日：2008-10-23
申请号：KR1020070125652
申请日：2007-12-05
Applicant: 한국전자통신연구원
IPC: H04B1/40
CPC classification number: G06F21/563 , G06F21/562
Abstract: An apparatus and a method for detecting a malicious file in a portable terminal are provided to detect the malicious file according to the attribute of a file used in a portable terminal, thereby dealing with an attack of an unknown new malicious code. A method for detecting a malicious file in a portable terminal comprises the following steps of: determining whether an inspection target file is an executable file format(310); determining whether plural execution files are bound to the inspection target file(312); determining whether the inspection target file uses an API(Application Program Interface) for generating a process(314); determining whether the inspection target file uses a call connection API(316); determining whether the inspection target file uses a text transmission API(318); determining whether the inspection target file uses a GUI(Graphic User Interface) generating API(320); determining the inspection target file as a normal file finally when it is determined that the inspection target file uses the GUI generating API(322); and determining the inspection target file as the malicious file finally when it is determined that the inspection target file does not use the GUI generating API(324).
Abstract translation: 提供了一种用于检测便携式终端中的恶意文件的装置和方法，用于根据便携式终端中使用的文件的属性来检测恶意文件，从而处理未知新的恶意代码的攻击。 一种用于在便携式终端中检测恶意文件的方法包括以下步骤：确定检查对象文件是否为可执行文件格式（310）; 确定多个执行文件是否被绑定到检查目标文件（312）; 确定所述检查目标文件是否使用API（应用程序接口）来生成过程（314）; 确定检查目标文件是否使用呼叫连接API（316）; 确定检查目标文件是否使用文本传输API（318）; 确定检查目标文件是否使用GUI（图形用户界面）生成API（320）; 当确定检查目标文件使用GUI生成API（322）时，最终将检查目标文件确定为正常文件; 以及当确定所述检查对象文件不使用所述GUI生成API时，最终将所述检查目标文件确定为恶意文件（324）。
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公开(公告)号：KR1020080043201A
公开(公告)日：2008-05-16
申请号：KR1020070038466
申请日：2007-04-19
Applicant: 한국전자통신연구원
IPC: G06F11/00
Abstract: A device and a method for detecting a file embedded with a malicious code are provided to manage attack using vulnerability in a process of which all programs as well as macros process supported file formats, and fundamentally prevent execution of all abnormal processes operated during a file handling process. An execution code detecting module(101) detects an execution file format from a target file by checking whether execution file format MZ and PE(Portable Executable) headers are found in the target file through a static analysis. A support program searching module(102) checks over a process name and an execution path of a support program by searching the support program with an extension of the target file. An abnormal process detecting module(103) determines whether a parent process of a generated new process is abnormal with a tree structure of the process by monitoring the searched support process. A forcible terminating module(105) terminates the new process forcibly when the target file is determined as the file including a malicious code. The abnormal processing detecting module determines abnormality of the parent process of the new process by checks whether a process name is found from a normal process database(104).
Abstract translation: 提供了一种用于检测嵌入恶意代码的文件的设备和方法，以便在所有程序以及宏处理支持的文件格式的过程中使用漏洞来管理攻击，从根本上防止在文件处理期间操作的所有异常进程的执行 处理。 执行代码检测模块（101）通过静态分析检查在目标文件中是否找到执行文件格式MZ和PE（Portable Executable）头部，从目标文件检测执行文件格式。 支持程序搜索模块（102）通过用目标文件的扩展来搜索支持程序来检查支持程序的进程名称和执行路径。 异常处理检测模块（103）通过监视搜索到的支持处理来确定生成的新进程的父进程是否异常与进程的树结构。 当目标文件被确定为包含恶意代码的文件时，强制终止模块（105）强制终止新进程。 异常处理检测模块通过检查是否从正常处理数据库（104）发现处理名称来确定新处理的父进程的异常。
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公开(公告)号：KR100758334B1
公开(公告)日：2007-09-13
申请号：KR1020060041349
申请日：2006-05-09
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0026 , H04L1/0003 , H04L1/0059 , H04L1/0075 , H04L1/08 , H04L1/188
Abstract: 본 발명은 무선 통신 시스템의 통신 장치 및 그 방법에 관한 것이다.
본 발명의 무선 통신 시스템의 통신 장치는 수신단으로 송신한 데이터의 응답 데이터 수신을 감시하고, 응답 데이터 수신에 따라 수신 성공을 카운트하는 제1 변수를 설정한다. 그리고, 응답 데이터를 복조하고, 복조에 따라 제1설정값을 만족하는 데이터의 개수를 추출한다.
그 후에, 상기 변경된 제1 변수가 제2설정값을 만족하고, 상기 데이터 개수가 미리 저장된 패킷 개수 기준치의 설정 비율을 만족하는지 판단하여 전송 모드를 변경한다.
이러한, 본 발명에 따르면, 수신단으로부터 수신되는 응답 데이터를 기초로 추출한 연판정된 데이터 개수를 참조하여, 채널 상태에 따른 효율적인 전송 모드를 제공할 수 있는 효과가 있다.
또한, 응답 데이터만을 이용하여 전송 모드를 결정할 수 있는 효과를 기대할 수 있다.
연판정 복조기, 변조, DCF, 무선 통신 시스템, 통신 장치, 전송률-
公开(公告)号：KR100740576B1
公开(公告)日：2007-07-18
申请号：KR1020060033598
申请日：2006-04-13
Applicant: 한국전자통신연구원
Abstract: 본 발명은 무선 랜 환경에서 하향링크 데이터 패킷의 집합 전송 방법 및 장치에 관한 것이다.
하향 링크의 음성 데이터 프레임을 이동 단말에 전송함에 있어, 오버헤드 비율을 낮추기 위하여 여러 개의 데이터 프레임을 모아서 전송하는 집합 전송(Aggregation) 기법을 액세스 포인트에 적용한다.
따라서, 하향 링크의 음성 데이터 프레임을 집합 전송 방법으로 전송함으로써 전송 오버헤드가 줄어들고, 데이터 전송 효율을 높일 수 있다.
무선 랜, VoIP, 음성 코덱, 집합 전송
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