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公开(公告)号：KR1020130137832A
公开(公告)日：2013-12-18
申请号：KR1020120061401
申请日：2012-06-08
Applicant: 아주대학교산학협력단
CPC classification number: H04W72/10
Abstract: The present invention is to ensure the quality of real-time multimedia data transmission. More specifically, the present invention relates to a method and apparatus for ensuring the quality of real-time multimedia data transmission using virtual slots in an MAC layer of a communication network. The present invention can prevent quality degradation of priority content data and can ensure quality of service (QoS) by allocating the virtual slots in a period corresponding to the QoS of the priority content data and adjusting transmission periods of data to be transmitted in the remaining terminals excluding a terminal to transmit the priority content data, when the periodic transmission of priority content data is required. Meanwhile, the present invention can ensure the QoS and can prevent throughput degradation of the entire network by enabling other terminals to selectively transmit the data in consideration of a tolerance range of a transmission jitter and enabling the terminal to transmit the priority content data to flexibly operate the virtual slots. [Reference numerals] (110,AA) 1: Virtual slot;(120) Virtual slot period;(Event 1) Start a voice call on a terminal 1;(Event2) Allow the terminal 1 to transmit a virtual slot allocation request message through a slot permitted to the terminal 1;(Event3) Allow the terminal 1 to transmit a voice message through a virtual slot;(Event4) Even though there is a message to be transmitted through a transmission slot of a terminal 5, determine that a message can not be transmitted in a transmission delay variation tolerance based on the virtual slot period, not transmitting the message;(Event5) Allow the terminal 1 to transmit a voice message periodically in the transmission delay variation tolerance
Abstract translation: 本发明是确保实时多媒体数据传输的质量。 更具体地，本发明涉及一种用于确保使用通信网络的MAC层中的虚拟时隙的实时多媒体数据传输的质量的方法和装置。 本发明可以防止优先级内容数据的质量劣化，并且可以通过在与优先级内容数据的QoS对应的时段内分配虚拟时隙来确保服务质量（QoS），并且调整在其余终端中要发送的数据的传输周期 当需要优先级内容数据的周期性传输时，不包括发送优先级内容数据的终端。 同时，本发明可以确保QoS并且可以通过使其他终端能够考虑到传输抖动的容限范围选择性地发送数据来防止整个网络的吞吐量劣化，并且使终端能够发送优先级内容数据以灵活地操作 虚拟插槽。 （110，AA）1：虚拟时隙;（120）虚拟时隙周期;（事件1）在终端1上开始语音呼叫;（事件2）允许终端1通过虚拟时隙分配请求消息 允许终端1的时隙（事件3）允许终端1通过虚拟时隙发送语音消息;（事件4）即使存在要通过终端5的传输时隙发送的消息，确定消息 不能在基于虚拟时隙周期的传输延迟变化公差中发送，而不发送消息;（事件5）允许终端1以传输延迟变化容限周期性地发送语音消息
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公开(公告)号：KR1020130031652A
公开(公告)日：2013-03-29
申请号：KR1020110095356
申请日：2011-09-21
Applicant: 아주대학교산학협력단
IPC: H04L27/26 , H04B1/7136
CPC classification number: H04L5/0012
Abstract: PURPOSE: A wireless communication method by an orthogonal frequency division multiplexing is provided to lower detection probability attempted from a malicious user or an enemy communication terminal and obtain the gain of maximum frequency diversity. CONSTITUTION: The number of sub-channels which are available for jump is selected among prime numbers(S10). A seed matrix is generated by using a Latin square matrix(S20). A frequency jump pattern jumping in each symbol is comprised in a seed matrix for each user during a whole symbol section(S30). A frequency jump pattern is converted into the 2 dimensional jump method of a time-frequency axis based on a chaotic standard map. [Reference numerals] (AA) Start; (BB) End; (S10) Selecting the number of available sub-channels; (S20) Generating a seed matrix; (S30) Comprising a frequency jump pattern; (S40) Converting into a time-frequency axis 2 dimensional jump pattern
Abstract translation: 目的：提供一种通过正交频分复用的无线通信方法，以降低从恶意用户或敌方通信终端尝试的检测概率，并获得最大频率分集的增益。 构成：从素数中选择可用于跳跃的子通道数（S10）。 通过使用拉丁方阵来生成种子矩阵（S20）。 在整个符号部分期间，每个符号跳跃的频率跳跃模式被包括在每个用户的种子矩阵中（S30）。 基于混沌标准图，将频率跳变图案转换为时间 - 频率轴的二维跳跃方法。 （附图标记）（AA）开始; （BB）结束; （S10）选择可用子信道的数量; （S20）生成种子矩阵; （S30）包括频率跳变模式; （S40）转换为时间 - 频率轴2维跳跃图案
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公开(公告)号：KR101094093B1
公开(公告)日：2011-12-15
申请号：KR1020100054965
申请日：2010-06-10
Applicant: 아주대학교산학협력단
CPC classification number: H04W48/02 , H04L63/0442 , H04W12/08
Abstract: PURPOSE: A method for restricting the use of a mobile device in a wireless LAN(Local Area Network) environment is provided to restrict the use of a mobile device in a wireless LAN environment. CONSTITUTION: A server encodes a random value which is generated in a server through a public key(260). The server transmits the encoded random value to the mobile device(265). The mobile device decodes the encoded random value from the server through a secret key(275). The mobile device compares the decoded random value with a random value that is generated in the mobile device(280).
Abstract translation: 目的：提供一种限制在无线LAN（局域网）环境中使用移动设备的方法，以限制在无线LAN环境中的移动设备的使用。 构成：服务器通过公钥（260）编码在服务器中生成的随机值。 服务器将编码的随机值发送到移动设备（265）。 移动设备通过秘密密钥从服务器解码编码的随机值（275）。 移动设备将解码的随机值与在移动设备（280）中生成的随机值进行比较。
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公开(公告)号：KR1020110076220A
公开(公告)日：2011-07-06
申请号：KR1020090132871
申请日：2009-12-29
Applicant: 아주대학교산학협력단
Abstract: PURPOSE: A device access control method using location information and a system thereof are provided to efficiently secure data in a portable device. CONSTITUTION: A request message for using a device is transmitted to an authentication server(S310). An authority verification request message is received(S320). The authority verification request message includes data which is needed for verifying location authentication(S360). An authorization message is received from the authentication server(S380).
Abstract translation: 目的：提供使用位置信息的设备访问控制方法及其系统，以便有效地保护便携式设备中的数据。 构成：向认证服务器发送用于使用设备的请求消息（S310）。 接收到权限验证请求消息（S320）。 权限验证请求消息包括验证位置认证所需的数据（S360）。 从认证服务器接收到授权消息（S380）。
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公开(公告)号：KR1020110075088A
公开(公告)日：2011-07-06
申请号：KR1020090131431
申请日：2009-12-28
Applicant: 아주대학교산학협력단
CPC classification number: H04W12/06 , H04L9/32 , H04T2001/2095 , H04W8/24 , H04W12/04
Abstract: PURPOSE: A data access control system and method thereof are provided to block data access through a user device unit and to detect environment attribute information according to the determined policy. CONSTITUTION: A user device unit(111) requests authentication for data access approval. An environment attribute control unit extracts second environment attribute information value corresponding to the environment attribute of the user device unit. An authentication server unit authenticates data access approval of the user device unit through first environment attribute information value and second environment information value.
Abstract translation: 目的：提供一种数据访问控制系统及其方法，以阻止通过用户设备单元的数据访问，并根据确定的策略检测环境属性信息。 构成：用户设备单元（111）请求认证用于数据访问许可。 环境属性控制单元提取与用户设备单元的环境属性相对应的第二环境属性信息值。 认证服务器单元通过第一环境属性信息值和第二环境信息值来认证用户设备单元的数据访问许可。
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Patent Agency Ranking
公开(公告)号：KR101038072B1
公开(公告)日：2011-06-01
申请号：KR1020080113720
申请日：2008-11-15
Applicant: 아주대학교산학협력단
Abstract: 본 발명은 무선으로 구성된 다중 홉 환경에서 다수 채널을 사용하는 다중 라디오 및 OFDM(Orthogonal Frequency Division Multiplexing)을 물리계층으로 가짐으로써 고속의 데이터 통신을 가능하게 하는 셀룰러 메쉬 백본(cellular mesh backbone)이라는 통신 시스템에 관한 것이다.
수 Mbps의 고속 데이터 통신의 무선 백본망을 구성하기 위해서는 각 노드 간 튼튼한 무선 링크로 연결되어 있어야 하며, 백본망에서 바로 연결된 하부 액세스망을 지원할 수 있어야 한다.
본 발명은 이러한 필요조건을 충족시키기 위해 백본 노드(backbone node)에게 셀 클러스터링(cell clustering) 기법을 사용하여 독립적인 주파수-시간(frequency-time) 자원을 할당해 줌으로써 인접 백본 노드와 통신할 때 간섭 및 충돌이 없는 신뢰성 있는 데이터 전송을 수행한다.
또한, 위성을 이용한 위성형 연계 노드, 무인정찰기(UAV: Unmanned Aerial Vehicle)로 구성된 공중형 연계 노드, 이동형 기지국으로 구성된 지상형 연계 노드 같은 다수 종의 연계(Relay) 노드를 이용하여 무선 백본망에서 필요한 생존성 및 신뢰성을 높이고, 더불어 전송 범위를 확장한다.
본 발명은 무선으로 구성된 다중 홉망에서 고속의 데이터 통신이 가능하다는 점 때문에 차세대 상용 셀룰러망 환경, 군 전술망 환경, 사막 지형 환경등과 같은 다양한 환경에서도 응용하여 적용 가능하다.-
公开(公告)号：KR101005613B1
公开(公告)日：2011-01-06
申请号：KR1020080113469
申请日：2008-11-14
Applicant: 아주대학교산학협력단
Abstract: 제 1 터미널이 지상망 내의 적어도 하나 이상의 제 2 터미널로 구성되는 제 1 네트워크에서 사용되는 모든 위성 통신 자원을 할당받는 단계와 할당받은 위성 통신 자원을 제 2 터미널에게 할당하는 단계와 위성 통신 자원을 할당받은 제 2 터미널로부터 데이터를 송수신하는 단계와 송수신된 데이터를 위성망을 통하여 제 2 네트워크에 위치한 제 3 터미널에게 전송하는 단계를 포함하는 지상망을 이용한 위성망의 다중 접속 방법이 개시되어 있다.
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公开(公告)号：KR1020100054901A
公开(公告)日：2010-05-26
申请号：KR1020080113720
申请日：2008-11-15
Applicant: 아주대학교산학협력단
CPC classification number: H04W88/14 , H04L27/2601 , H04W84/02 , H04W88/04 , H04W92/24
Abstract: PURPOSE: A multi-hop based wireless mesh environment for a high speed data communication is provided to improve throughput of a whole communication system with the high speed data communication by utilizing multi-radios using multi-channels and an OFDM based physical layer. CONSTITUTION: A backbone node processes traffic of an access network of wireless multi-hop environment. The backbone node proceeds a role of data transmission to other node. A relay node transmits data to the backbone node out of a transmittable range in adjacent other node. The backbone node receives a data signal transmitted in the multi-channels through one transmission antenna and a plurality of receiving antennas at the same time. The backbone node uses an OFDM (Orthogonal Frequency Division Multiplexing) based multiple access type.
Abstract translation: 目的：提供用于高速数据通信的基于多跳的无线网状环境，通过利用使用多信道和基于OFDM的物理层的多无线电来提高具有高速数据通信的整个通信系统的吞吐量。 构成：骨干节点处理无线多跳环境接入网络的流量。 骨干节点将数据传输的角色转移到其他节点。 中继节点将数据发送到相邻其他节点的可发射范围内的骨干节点。 主干节点通过一个发送天线和多个接收天线同时接收在多信道中发送的数据信号。 骨干节点使用基于OFDM（正交频分复用）的多址接入类型。
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公开(公告)号：KR1020090001224A
公开(公告)日：2009-01-08
申请号：KR1020070065447
申请日：2007-06-29
Applicant: 아주대학교산학협력단
Abstract: The authentication, data transmission system and method of using the wireless mobile communications network are provided to reduce the load of total network by preventing the exposure of the cryptographic key. Authentication and data transmission system(200) are formed within the region of the wide area network(WN). The region of one or more local line network(the LN 1 or the LN M) is included within the region of the wide area network (WN). The user equipment receives the broad area security keylock. The user equipment performs the authentication about the received broad area security keylock. The local authentication part receives the instrument security keylock and user information from the user equipment. The local authentication part produces the user ID. The local authentication part transmits the user information and user ID to the broad area network controller. The broad area network controller stores the user information and user ID.
Abstract translation: 提供使用无线移动通信网络的认证，数据传输系统和方法，以通过防止加密密钥的暴露来减少总网络的负载。 验证和数据传输系统（200）形成在广域网（WN）的区域内。 一个或多个本地线路网络（LN 1或LN M）的区域被包括在广域网（WN）的区域内。 用户设备接收到广域安全锁。 用户设备对接收到的广域安全密钥锁进行认证。 本地认证部分从用户设备接收仪器安全锁定和用户信息。 本地认证部分产生用户ID。 本地认证部分向广域网控制器发送用户信息和用户ID。 广域网控制器存储用户信息和用户ID。
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