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公开(公告)号：KR1020140007544A
公开(公告)日：2014-01-20
申请号：KR1020120074513
申请日：2012-07-09
Applicant: 한국전자통신연구원
CPC classification number: H04W12/04 , H04L63/0823 , H04W12/06 , H04W84/18
Abstract: Provided is an authentication method in a wireless mesh network which can reduce overload and delays in communications during authentication processes by performing authentication between nodes without accessing an authentication server. The authentication method in a wireless mesh network according to an embodiment of the present invention comprises the following steps of: selecting, by a new node, a first adjacent node among at least one adjacent mode and transmitting an authentication request message including a public key of the new node; authenticating, by the first adjacent node, the public key of the new node and transmitting an authentication response message including a public key of the first adjacent node to the new node; and authenticating, by the new node, the public key of the first adjacent node and transmitting an authentication confirmation message to the first adjacent node. [Reference numerals] (103) New node; (105) First adjacent node; (S201) Authentication request message; (S203) Authentication response message; (S205) Authentication confirmation message; (S207) Session key request message; (S209) Session key response message
Abstract translation: 提供了一种无线网状网络中的认证方法，其可以通过在不访问认证服务器的情况下执行节点之间的认证来减少认证处理期间的通信的过载和延迟。 根据本发明的实施例的无线网状网络中的认证方法包括以下步骤：由新节点选择至少一个相邻模式中的第一相邻节点，并发送包括公钥的认证请求消息 新节点; 由所述第一相邻节点认证所述新节点的公开密钥，并向所述新节点发送包括所述第一相邻节点的公开密钥的认证响应消息; 以及由所述新节点认证所述第一相邻节点的公开密钥并向所述第一相邻节点发送认证确认消息。 （附图标记）（103）新节点; （105）第一相邻节点; （S201）认证请求消息; （S203）认证响应消息; （S205）认证确认消息; （S207）会话密钥请求消息; （S209）会话密钥响应消息
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公开(公告)号：KR101283467B1
公开(公告)日：2013-07-12
申请号：KR1020100034825
申请日：2010-04-15
Applicant: 한국전자통신연구원
CPC classification number: Y02D70/20
Abstract: 본 발명은 채널호핑 기반의 무선 애드혹 네트워크에서의 적응형 간섭 회피 장치 및 방법에 관한 것으로, 상기 적응형 간섭 회피 장치는, 수신 프레임을 이용하여 각 채널별 채널품질을 측정하는 채널품질 측정부; 상기 각 채널별 채널품질 정보를 기초로 향후 통신을 수행하지 않을 불용채널을 분류하는 불용채널 분류부; 상기 불용채널로 분류된 불용채널 리스트를 이웃노드로 전달하는 불용채널 전파부; 및 상기 불용채널로 분류되지 않은 채널을 통해 프레임을 송수신하는 송수신부를 포함하여 구성된다.
Abstract translation: 目的：提供一种基于信道跳频的无线自组织网络中的自适应干扰避免装置和方法，用于根据节点信道质量的测量对不可用信道进行分类。 构成：信道质量测量单元（110）利用接收到的帧来测量信道质量。 信道信息存储单元（120）存储所测量的信道质量信息。 基于信道质量信息，不可用信道分类单元（130）对稍后不进行通信的不可用信道进行分类。 不可用信道传播单元（140）将不可用信道列表传送到相邻节点。 收发器（150）通过不被分类为不可用信道的信道来发送和接收帧。
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公开(公告)号：KR101255535B1
公开(公告)日：2013-04-16
申请号：KR1020090082555
申请日：2009-09-02
Applicant: 한국전자통신연구원
Abstract: 본 발명은 메쉬네트워크를 지원하는 슈퍼프레임 구조 및 비컨 스케쥴링 방법에 관한 것이다.
본 발명은 비컨 모드에서 메쉬 토폴로지를 지원할 수 있으며, 분산방식의 비컨 스케쥴링으로 알고리즘이 단순하며 구현이 쉽고, 네트워크 환경변화에 쉽게 적응할 수 있는 효과를 얻을 수 있다.-
公开(公告)号：KR1020120113495A
公开(公告)日：2012-10-15
申请号：KR1020110031230
申请日：2011-04-05
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A path conversion method in a wireless mesh network and path conversion apparatus thereof are provided to convert a transmission path by selecting a desired node and a conversion point for successively providing services in a wireless mesh network. CONSTITUTION: A link quality measurement unit(130) measures a signal strength of each candidate node and a communication node. A routing unit(120) measures the path cost of a path using the communication node and each candidate node. A path conversion unit(110) determines a necessary signal strength in each candidate node. When a candidate node which satisfies necessary signal strength is existed, the path conversion unit converts the node using the path. The routing unit includes path costs according to the quality of a path. [Reference numerals] (110) Path conversion unit; (120) Routing unit; (130) Link quality measurement unit
Abstract translation: 目的：提供无线网状网络中的路径转换方法及其路径转换装置，用于通过选择期望的节点和用于在无线网状网络中连续提供服务的转换点来转换传输路径。 构成：链路质量测量单元（130）测量每个候选节点和通信节点的信号强度。 路由单元（120）使用通信节点和每个候选节点来测量路径的路径开销。 路径转换单元（110）确定每个候选节点中必要的信号强度。 当存在满足必要信号强度的候选节点时，路径转换单元使用路径转换节点。 路由单元根据路径的质量包括路径开销。 （附图标记）（110）路径转换单元; （120）路由单元; （130）链路质量测量单元
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公开(公告)号：KR1020120071953A
公开(公告)日：2012-07-03
申请号：KR1020100133699
申请日：2010-12-23
Applicant: 한국전자통신연구원
CPC classification number: H04L12/437 , H04W40/248
Abstract: PURPOSE: A routing information transmission method in a wireless network and routing apparatus thereof are provided to smoothly transmit routing information in environment where a bandwidth is restricted by creating a routing update message according to the priority of each link information. CONSTITUTION: A routing unit(310) searches a neighbor node. The routing unit exchanges the routing information with the searched neighbor node. A neighbor node information management unit(320) manages neighbor node information. A link information management unit(330) manages the topology information of a network in a link unit. A routing table management unit(340) updates routing tables when the link information is updated.
Abstract translation: 目的：提供一种无线网络中的路由信息传输方法及其路由设备，以便通过根据每个链路信息的优先级创建路由更新消息来平滑地传输带宽受限的环境中的路由信息。 构成：路由单元（310）搜索邻居节点。 路由单元与搜索到的邻居节点交换路由信息。 邻居节点信息管理单元（320）管理邻居节点信息。 链接信息管理单元（330）管理链路单元中的网络的拓扑信息。 当更新链路信息时，路由表管理单元（340）更新路由表。
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Patent Agency Ranking
公开(公告)号：KR1020120012749A
公开(公告)日：2012-02-10
申请号：KR1020100131463
申请日：2010-12-21
Applicant: 한국전자통신연구원
CPC classification number: H04L5/0091 , H04W72/0446 , H04W72/1263 , H04W84/18
Abstract: PURPOSE: A distributed scheduling method in a wireless mesh network based on OFDMA and a device thereof are provided to use a frame with a structure which can access resources by a sub channel. CONSTITUTION: A transceiving unit(810) transmits or receives a distributed scheduling message through a sub channel of a distributed scheduling sub frame of a data frame. A controller(820) generates a distributed scheduling message to be transmitted. The controller processes the received distributed scheduling message. The distributed scheduling message includes a transmission request message, a transmission approving message, and a transmission confirming message. The transmission request message, the transmission approving message, and the transmission confirming message are transmitted through different sub channels.
Abstract translation: 目的：提供一种基于OFDMA及其设备的无线网状网络中的分布式调度方法，以使用具有可通过子信道接入资源的结构的帧。 构成：收发单元（810）通过数据帧的分布式调度子帧的子信道发送或接收分布式调度消息。 控制器（820）生成要发送的分布式调度消息。 控制器处理接收到的分布式调度消息。 分布式调度消息包括传输请求消息，传输批准消息和传输确认消息。 发送请求消息，发送批准消息和发送确认消息通过不同的子信道发送。
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公开(公告)号：KR1020100121441A
公开(公告)日：2010-11-17
申请号：KR1020100042989
申请日：2010-05-07
Applicant: 한국전자통신연구원
CPC classification number: H04L12/40013 , H04W28/18 , H04W60/00 , H04W76/10 , H04W84/10 , H04W84/18 , H04W88/06
Abstract: PURPOSE: An operation method of a WPAN(Wireless Personal Area Network) device, capable of reducing the degradation of RF reliability is provided to periodically perform a hopping operation by using a channel hopping sequence. CONSTITUTION: A connection request primitive, which allows a connection request with a coordinator to a device, is generated. The connection request primitive includes first and second parameters. The first parameter determines an offset value of a channel hopping sequence. The second parameter determines the use of a default channel hopping sequence. If the value of the second parameter is greater than 1, the channel hopping sequence is requested to its own coordinator.
Abstract translation: 目的：提供能够降低RF可靠性劣化的WPAN（无线个域网）装置的操作方法，以便通过使用信道跳频序列来周期性地执行跳频操作。 构成：生成连接请求原语，它允许与设备的协调器进行连接请求。 连接请求原语包括第一和第二参数。 第一参数确定信道跳频序列的偏移值。 第二个参数决定了使用默认的信道跳频序列。 如果第二个参数的值大于1，则向其自己的协调器请求信道跳频序列。
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公开(公告)号：KR1020100039800A
公开(公告)日：2010-04-16
申请号：KR1020090082555
申请日：2009-09-02
Applicant: 한국전자통신연구원
CPC classification number: H04W4/06 , H04W72/082 , H04W72/1278 , H04W74/0841
Abstract: PURPOSE: A super frame structure and a beacon scheduling method for mesh networking are provided to support a mesh topology in a beacon mode and to enable easy adaptation of network environment change using a distribution-type beacon scheduling algorithm. CONSTITUTION: A join node performs beacon scanning(S201). The join node obtains neighboring mode beacon allocation information of a neighboring node(S203). The join node selects a non-allocated beacon slot(S205). A node which selects an own beacon slot transmits a beacon from the beacon slot periodically(S211).
Abstract translation: 目的：提供网状网络的超帧结构和信标调度方法，以支持信标模式下的网状拓扑，并使用分布式信标调度算法实现网络环境变化的轻松调整。 构成：连接节点执行信标扫描（S201）。 连接节点获得相邻节点的相邻模式信标分配信息（S203）。 连接节点选择未分配的信标时隙（S205）。 选择自己的信标时隙的节点周期性地从信标时隙发送信标（S211）。
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公开(公告)号：KR1020100007765A
公开(公告)日：2010-01-22
申请号：KR1020090062564
申请日：2009-07-09
Applicant: 한국전자통신연구원
CPC classification number: H04W56/001 , H04W4/06 , H04W56/004 , H04W84/18
Abstract: PURPOSE: A time synchronization method for a multi-hop sensor network is provided to add a delay transmission temporal value to a beacon frame for reducing the collision of the beacon frame in a beacon mode, so that receiving nodes can perform exact time synchronization. CONSTITUTION: A transmission node performs CCA(Clear Channel Assessment) and backoff for preventing collision(S101). The transmission node creates a time stamp before transmission of a beacon frame and after time delay(S103). The transmission node adds a delayed temporal value and a time stamp value to the beacon frame. The transmission node transmits the beacon frame(S105). The delayed temporal value is the temporal value delayed by performance of backoff and CCA. The time stamp value comprises an interface delay value between an MAC(Media Access Control) layer and a PHY(Physical) layer and a modulation delay value in the PHY layer.
Abstract translation: 目的：提供一种用于多跳传感器网络的时间同步方法，用于向信标帧添加延迟传输时间值，以减少信标模式下的信标帧的冲突，使得接收节点可以执行准确的时间同步。 规定：传输节点执行CCA（清除信道评估）和防止冲突的退避（S101）。 发送节点在发送信标帧之前和时间延迟之后创建时间戳（S103）。 传输节点将延迟的时间值和时间戳值添加到信标帧。 发送节点发送信标帧（S105）。 延迟时间值是通过执行退避和CCA延迟的时间值。 时间戳值包括MAC（媒体访问控制）层和PHY（物理）层之间的接口延迟值和PHY层中的调制延迟值。
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公开(公告)号：KR102249948B1
公开(公告)日：2021-05-10
申请号：KR1020190041777
申请日：2019-04-10
Applicant: 한국전자통신연구원
Abstract: 통신시스템에서저지연통신을위한방법및 장치가개시된다. 기지국의동작방법은, 서브프레임 #n 내의 A 구간들을통해전송되는데이터유닛들의제1 스케줄링정보를상기서브프레임 #n 내의제1 제어채널을통해단말에전송하는단계, 상기데이터유닛들을상기 A 구간들을통해상기단말에전송하는단계, 및상기서브프레임 #n 이후의서브프레임 #n+k 내의 B 구간(들)을통해전송되는데이터유닛(들)의제2 스케줄링정보를상기서브프레임 #n+k 내의제2 제어채널을통해상기단말에전송하는단계를포함한다. 따라서통신시스템의성능이향상될수 있다.
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