公开(公告)号：US20090207783A1

公开(公告)日：2009-08-20

申请号：US12370709

申请日：2009-02-13

申请人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Jae Kyun Jung

发明人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Jae Kyun Jung

IPC分类号： H04W40/02

CPC分类号： H04W40/20 ,  H04W40/026 ,  Y02D70/164 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/38

摘要： A communication method and apparatus using a virtual sink node in a wireless sensor network, in which location information about a destination node is acquired by a source node. If the location of the destination node is out of a transmission range of the source node, data including the location information about the destination node are transmitted from the source node to one of nodes adjacent to the source node, where the one node is typically closest to the destination node. The data are transmitted from the one node to another one of nodes adjacent to the one node, where another node is closest to the destination node, until the destination node is located within a transmission range of the one node. If the destination node is located within the transmission range of the one node, the data are transmitted from the one node to the destination node.

摘要翻译： 一种在无线传感器网络中使用虚拟汇聚节点的通信方法和装置，其中由源节点获取关于目的地节点的位置信息。 如果目的地节点的位置在源节点的传输范围之外，则包括关于目的地节点的位置信息的数据从源节点发送到与源节点相邻的节点之一，其中一个节点通常最接近 到目标节点。 数据从一个节点发送到与该一个节点相邻的另一个节点，另一个节点最靠近目的地节点，直到目的地节点位于该节点的传输范围内。 如果目的地节点位于一个节点的传输范围内，则从一个节点向目的地节点发送数据。

公开(公告)号：US08856227B2

公开(公告)日：2014-10-07

申请号：US12370709

申请日：2009-02-13

申请人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Jae Kyun Jung

发明人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Jae Kyun Jung

IPC分类号： G06F15/16 ,  H04W40/02 ,  H04W40/20

CPC分类号： H04W40/20 ,  H04W40/026 ,  Y02D70/164 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/38

摘要： A communication method and apparatus using a virtual sink node in a wireless sensor network, in which location information about a destination node is acquired by a source node. If the location of the destination node is out of a transmission range of the source node, data including the location information about the destination node are transmitted from the source node to one of nodes adjacent to the source node, where the one node is typically closest to the destination node. The data are transmitted from the one node to another one of nodes adjacent to the one node, where another node is closest to the destination node, until the destination node is located within a transmission range of the one node. If the destination node is located within the transmission range of the one node, the data are transmitted from the one node to the destination node.

摘要翻译： 一种在无线传感器网络中使用虚拟汇聚节点的通信方法和装置，其中由源节点获取关于目的地节点的位置信息。 如果目的地节点的位置在源节点的传输范围之外，则包括关于目的地节点的位置信息的数据从源节点发送到与源节点相邻的节点之一，其中一个节点通常最接近 到目标节点。 数据从一个节点发送到与该一个节点相邻的另一个节点，另一个节点最靠近目的地节点，直到目的地节点位于该节点的传输范围内。 如果目的地节点位于一个节点的传输范围内，则从一个节点向目的地节点发送数据。

公开(公告)号：US08174997B2

公开(公告)日：2012-05-08

申请号：US12370683

申请日：2009-02-13

申请人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Sang Hoon Lee

发明人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Sang Hoon Lee

IPC分类号： H04L12/26

CPC分类号： H04L43/0811 ,  H04W40/16 ,  H04W40/18

摘要： A communication method and apparatus is disclosed that uses a received signal strength indicator (RSSI). In a sensor network including a plurality of nodes, a first node of the plurality of nodes receives a signal transmitted from a second node of the plurality of nodes, at least once. The first node also manages a link state with the second node according to the RSSI of the received signal. Therefore, the first node can receive signals from the plurality of nodes and then predict whether the second node moves. The first node can also predict a link state after the second node is moved so that communication can be performed through a link in a good state. Accordingly, the communication quality and the network performance of a network are enhanced.

摘要翻译： 公开了一种使用接收信号强度指示器（RSSI）的通信方法和装置。 在包括多个节点的传感器网络中，多个节点中的第一节点至少接收一次从多个节点的第二节点发送的信号。 第一节点还根据接收到的信号的RSSI来管理与第二节点的链路状态。 因此，第一节点可以从多个节点接收信号，然后预测第二节点是否移动。 第一节点还可以在移动第二节点之后预测链路状态，使得可以通过处于良好状态的链路执行通信。 因此，提高了网络的通信质量和网络性能。

公开(公告)号：US20090207748A1

公开(公告)日：2009-08-20

申请号：US12370683

申请日：2009-02-13

申请人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Sang Hoon Lee

发明人： Hyo Hyun Choi ,  Sun Gi Kim ,  Lynn Choi ,  Sang Hoon Lee

IPC分类号： H04W84/18 ,  H04L12/26

CPC分类号： H04L43/0811 ,  H04W40/16 ,  H04W40/18

摘要： A communication method and apparatus is disclosed that uses a received signal strength indicator (RSSI). In a sensor network including a plurality of nodes, a first node of the plurality of nodes receives a signal transmitted from a second node of the plurality of nodes, at least once. The first node also manages a link state with the second node according to the RSSI of the received signal. Therefore, the first node can receive signals from the plurality of nodes and then predict whether the second node moves. The first node can also predict a link state after the second node is moved so that communication can be performed through a link in a good state. Accordingly, the communication quality and the network performance of a network are enhanced.

摘要翻译： 公开了一种使用接收信号强度指示器（RSSI）的通信方法和装置。 在包括多个节点的传感器网络中，多个节点中的第一节点至少接收一次从多个节点的第二节点发送的信号。 第一节点还根据接收到的信号的RSSI来管理与第二节点的链路状态。 因此，第一节点可以从多个节点接收信号，然后预测第二节点是否移动。 第一节点还可以在移动第二节点之后预测链路状态，使得可以通过处于良好状态的链路执行通信。 因此，提高了网络的通信质量和网络性能。

公开(公告)号：US07855684B2

公开(公告)日：2010-12-21

申请号：US12270912

申请日：2008-11-14

申请人： Jehyok Ryu ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Bum Jin Kim ,  Sae Young Ahn ,  Sun Shin An

发明人： Jehyok Ryu ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Bum Jin Kim ,  Sae Young Ahn ,  Sun Shin An

IPC分类号： G01S3/02

CPC分类号： G01S5/14 ,  G01S5/0236 ,  G01S5/0252

摘要： For a sensor network having reference nodes and sensor nodes, A method and apparatus using a distance determining algorithm for a sensor network having reference nodes and sensor nodes. A distance determining algorithm is executed to determine an adequate distance between reference nodes within a preset error range, and a position location table is created. A sensor node sends a location information request to reference nodes, receives the position location table and location information from the reference nodes, and computes the coordinates of its position. Alternatively, without requesting transmission of the position location table, the sensor node may receive calculated coordinates of its position directly from a reference node.

摘要翻译： 对于具有参考节点和传感器节点的传感器网络，使用具有参考节点和传感器节点的传感器网络的距离确定算法的方法和装置。 执行距离确定算法以确定在预设误差范围内的参考节点之间的足够距离，并且创建位置位置表。 传感器节点向参考节点发送位置信息请求，从参考节点接收位置位置表和位置信息，并计算其位置的坐标。 或者，在不要求发送位置位置表的情况下，传感器节点可以直接从参考节点接收其位置的计算坐标。

公开(公告)号：US20090154438A1

公开(公告)日：2009-06-18

申请号：US12334706

申请日：2008-12-15

申请人： Eui Jik Kim ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Jeong Geun Kim

发明人： Eui Jik Kim ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Jeong Geun Kim

IPC分类号： H04W40/02

CPC分类号： H04W74/0833 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

摘要： A packet transmission method for a WPAN that for alleviating traffic concentration in an active period and improving network throughput by controlling packet transmission timing in the active period. A packet transmission method for a wireless personal area network including a coordinator operating with a specific duty cycle and a plurality of devices includes determining, when a packet is generated, whether there is another packet waiting to be sent; determining, if there is no other packet waiting to be sent, whether the network is in an inactive period; setting, when network is in an inactive period, a backoff time; and sending the packet when the backoff time has expired. The packet transmission method controls an initial backoff value adaptively to a duty cycle of the network.

摘要翻译： 一种WPAN的分组发送方法，用于通过控制活动期间的分组发送定时来缓解活动期间的业务集中，提高网络吞吐量。 一种用于包括以特定占空比操作的协调器和多个设备的无线个域网的分组传输方法包括：确定何时产生分组，是否存在等待发送的另一分组; 确定如果没有其他分组等待发送，则网络是否处于非活动时段; 当网络处于非活动期间时，设置退避时间; 并且当退避时间到期时发送分组。 分组传输方法自适应地控制网络的占空比的初始后退值。

公开(公告)号：US08391207B2

公开(公告)日：2013-03-05

申请号：US12270901

申请日：2008-11-14

申请人： Jeong Sik In ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Ju Wook Jang ,  Woo Kyung Sung

发明人： Jeong Sik In ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Ju Wook Jang ,  Woo Kyung Sung

IPC分类号： H04W4/00

CPC分类号： H04B7/2606

摘要： A method and system for transmitting data from a base station to a mobile station in a wireless communication system using a multiple hop relay scheme is In a multi-hop system having a plurality of nodes, performing bidirectional data transmission between the nodes comprises: grouping the plurality of nodes into a first node group to a fourth node group, and assigning data transmission intervals to the grouped node groups at each frame, the data transmission intervals dividing each frame in time; receiving, by a second group node, data from an upper group node at a first frame and, at the same time, receiving, by a third group node, data from a lower group node; and transmitting by the second group node data to the upper group node at a second frame and, at the same time, transmitting by the third group node data to the lower group node.

摘要翻译： 一种在使用多跳中继方案的无线通信系统中从基站向移动台发送数据的方法和系统在具有多个节点的多跳系统中，在所述节点之间执行双向数据传输包括：将 多个节点分成第一节点组到第四节点组，并且将数据传输间隔分配给每个帧处的分组节点组，数据传输间隔在时间上划分每个帧; 由第二组节点接收来自第一帧的上组节点的数据，并且同时由第三组节点接收来自下组节点的数据; 并且由第二组节点将数据以第二帧发送到上组节点，同时由第三组节点发送数据给下组节点。

公开(公告)号：US08194695B2

公开(公告)日：2012-06-05

申请号：US12351902

申请日：2009-01-12

申请人： Eui Jik Kim ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Vu Thuy Dan Nguyen ,  Jeong Geun Kim

发明人： Eui Jik Kim ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Vu Thuy Dan Nguyen ,  Jeong Geun Kim

IPC分类号： H04L12/403

CPC分类号： H04W74/0816 ,  H04W84/18

摘要： A communication terminal and method is provided for improving channel utilization efficiency in a wireless sensor network using contention-based channel access mechanism is disclosed. The communication method according to the present invention comprises initializing, when a packet transmission is required, a contention window to a size; resetting, when a channel is assessed to be busy, the size of the contention window in a hybrid expansion mode; and attempting, when the channel is assessed to be idle, the packet transmission through the channel.

摘要翻译： 本发明提供了一种通过使用基于争用的信道接入机制来提高无线传感器网络中的信道利用效率的通信终端和方法。 根据本发明的通信方法包括：当需要分组传输时，将竞争窗口初始化为大小; 当信道被评估为忙时，在混合扩展模式中重置竞争窗口的大小; 并且当信道被评估为空闲时尝试通过信道传输分组。

公开(公告)号：US08797944B2

公开(公告)日：2014-08-05

申请号：US12354875

申请日：2009-01-16

申请人： Hyo Hyun Choi ,  Sun Gi Kim ,  Tae Shik Shon ,  Jin Ho Kim ,  Choong Seon Hong

发明人： Hyo Hyun Choi ,  Sun Gi Kim ,  Tae Shik Shon ,  Jin Ho Kim ,  Choong Seon Hong

IPC分类号： H04W4/00

CPC分类号： H04W8/02 ,  H04W48/14 ,  H04W80/04 ,  H04W84/005 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A mobility management system and method is provided for efficiently support mobility to an IPv6 based LoWpan. The mobility management method for Internet Protocol version 6 (IPv6) based personal area network (PAN) moving with a mobile router according to the present invention includes detecting, at a mobile terminal, movement of the mobile router; determining whether the movement is an intra-network movement or an inter-network movement, transmitting, when the movement is an intra-network movement, a neighbor discovery request message to a gateway of a currently attached network and receiving a neighbor discovery response message containing a temporary address transmitted by the gateway in response to the neighbor discovery request message. When the movement is an inter-network movement, the gateway receives the binding acknowledgement message from a home agent and establishes a bidirectional tunnel with the home agent.

摘要翻译： 提供了一种移动性管理系统和方法，用于有效地支持基于IPv6的LoWpan的移动性。 根据本发明的用移动路由器移动的基于互联网协议版本6（IPv6）的个人区域网（PAN）的移动性管理方法包括在移动终端处检测移动路由器的移动; 确定移动是网络内移动还是网络间移动，当移动是网络内移动时，向当前附接网络的网关发送邻居发现请求消息，并且接收包含以下内容的邻居发现响应消息： 由所述网关响应于所述邻居发现请求消息而发送的临时地址。 当移动是网络间移动时，网关从归属代理接收绑定确认消息，并与归属代理建立双向隧道。

公开(公告)号：US08421615B2

公开(公告)日：2013-04-16

申请号：US12270898

申请日：2008-11-14

申请人： Jehyok Ryu ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Sun Shin An ,  Sae Young Ahn ,  Bum Jin Kim

发明人： Jehyok Ryu ,  Sun Gi Kim ,  Hyo Hyun Choi ,  Sun Shin An ,  Sae Young Ahn ,  Bum Jin Kim

IPC分类号： G08B1/08

CPC分类号： G08C21/00

摘要： A method and apparatus for a sensor network having a plurality of reference nodes and a sensor node that enables the sensor node to compute a relative position through transmission range control and position mapping. In transmission range control, each reference node sends location information signals to the sensor node while varying transmission power. In position mapping, the sensor node forms a grid of vertical and horizontal lines corresponding to a square area defined by the neighboring reference nodes, extracts coordinates of intersections in the grid belonging to a shared region between areas covered by location information signals of various transmit power levels from the neighboring reference nodes, and sets the position of the sensor node to the middle points of the extracted coordinates. Each reference node sends a location information signal when a random backoff time expires after reception of a location information request signal.

摘要翻译： 一种用于具有多个参考节点和传感器节点的传感器网络的方法和装置，其使传感器节点能够通过传输范围控制和位置映射来计算相对位置。 在传输范围控制中，每个参考节点在发射功率变化的同时向传感器节点发送位置信息信号。 在位置映射中，传感器节点形成对应于由相邻参考节点定义的平方区域的垂直和水平线的网格，提取属于各种发射功率的位置信息信号覆盖的区域之间的共享区域的网格中的交点的坐标 级别，并将传感器节点的位置设置为提取的坐标的中点。 当接收到位置信息请求信号之后随机退避时间到期时，每个参考节点发送位置信息信号。