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    • 2. 发明授权
    • Protocol and structure for self-organizing network
    • 自组织网络的协议和结构
    • US07171476B2
    • 2007-01-30
    • US10125939
    • 2002-04-19
    • Masahiro MaedaMonique BourgeoisEdgar H. Callaway, Jr.Priscilla ChenJian HuangYan HuangQicai Shi
    • Masahiro MaedaMonique BourgeoisEdgar H. Callaway, Jr.Priscilla ChenJian HuangYan HuangQicai Shi
    • G06F15/16H04L12/28
    • H04W84/20H04L1/1607H04L45/02H04L45/026H04L45/46H04W40/246H04W76/10H04W84/18
    • A cluster tree network formed by self-organization of a number of nodes. The method of self-organization includes processes for cluster formation, cluster network maintenance, intra-cluster communication. In the cluster formation process, each node discovers if any neighboring node is a cluster head or if any node is already a member of a cluster (thus making it a networked node), and if a cluster head or a networked node is discovered, each node establishes a communication link with the cluster head or the networked node. If no cluster head or networked node is discovered, the node itself becomes a cluster head. The network is maintained by each node periodically broadcasting a HELLO message to neighboring nodes, receiving responses to the HELLO message and updating a neighbor list in accordance with responses to the HELLO message. Multi-cluster networks are also provided using the processes of inter-cluster network formation, inter-cluster network maintenance, and inter-cluster communication. The resulting network has one or more clusters of nodes, each with a cluster head and a number of member nodes, each assigned a node identifier by the cluster head. In a multi-cluster network, a designated device assigns identifies to each cluster head in the network. Border nodes, which are members of at least two clusters, act as routers connecting the clusters and relaying information packets between the clusters.
    • 通过多个节点的自组织形成的集群树网络。 自组织的方法包括集群形成,集群网络维护,集群内通信等过程。 在集群形成过程中,每个节点发现任何相邻节点是否为群集头,或者任何节点已经是群集的成员(从而使其成为网络节点),如果发现了群集头或网络节点, 节点与集群头或网络节点建立通信链路。 如果没有发现簇头或网络节点,节点本身就成为簇头。 网络由每个节点维护,周期性地向相邻节点广播HELLO消息,接收对HELLO消息的响应,并根据对HELLO消息的响应更新邻居列表。 群集间网络形成,集群间网络维护和群集间通信也提供了多集群网络。 所得到的网络具有一个或多个节点簇,每个节点具有簇头和多个成员节点,每个节点由簇头分配节点标识符。 在多集群网络中,指定的设备将标识分配给网络中的每个集群头。 作为至少两个集群的成员的边界节点充当连接集群并在集群之间中继信息包的路由器。
    • 4. 发明授权
    • Method and apparatus employing a mediation device to facilitate communication among devices in an asynchronous communications network
    • 采用中介设备促进异步通信网络中的设备之间的通信的方法和装置
    • US06816493B2
    • 2004-11-09
    • US09803322
    • 2001-03-09
    • Qicai ShiJian HuangEdgar H. Callaway, Jr.
    • Qicai ShiJian HuangEdgar H. Callaway, Jr.
    • H04L1228
    • H04W48/08H04W4/12H04W52/0219H04W76/10H04W84/18H04W88/04Y02D70/00
    • A low power consumption protocol for low power communication devices attached to an asynchronous network is described. In this protocol, a communication device is used as a high communication duty cycle Mediation Device (MD), thus permitting other communication devices to use a low communication duty cycle framing structure. The MD functions as a storage and retrieval service for messages between two devices when one device is not able to communicate. When the previously unavailable device becomes available, it can check in with the MD to retrieve any missed messages and respond to these messages accordingly. In a communication network, each of the low power communication devices can be configured to behave as MD's for a small amount of time. Sharing this responsibility among all communication devices in the network allows each device to maintain an low average communication duty cycle. This technique is applicable to a low power, low cost, zero-configuring, self-organizing, asynchronous network.
    • 描述了连接到异步网络的低功率通信设备的低功耗协议。 在该协议中,通信设备被用作高通信占空比中介设备(MD),从而允许其他通信设备使用低通信占空比帧结构。 当一个设备无法通信时,MD作为两个设备之间的消息的存储和检索服务。 当以前不可用的设备变得可用时,它可以使用MD检入以检索任何错过的消息并相应地响应这些消息。 在通信网络中,每个低功率通信设备可被配置为在少量时间内表现为MD。 在网络中的所有通信设备之间共享这个责任允许每个设备保持较低的平均通信占空比。 该技术适用于低功耗,低成本,零配置,自组织,异步网络。
    • 5. 发明授权
    • Intra-piconet location determination and tomography
    • 微微网位置确定和层析成像
    • US06745038B2
    • 2004-06-01
    • US09845467
    • 2001-04-30
    • Edgar H. Callaway, Jr.Matthew R. PerkinsQicai ShiNeal K. Patwari
    • Edgar H. Callaway, Jr.Matthew R. PerkinsQicai ShiNeal K. Patwari
    • H04Q720
    • H04W52/24H04B17/27H04B17/318H04W52/08
    • A technique for intra-piconet location determination and tomography is described. This technique uses received signal strength indicator (RSSI) values in conjunction with transmitted power levels to determine the relative location of each device within a small network employing frequency hopped spread spectrum transmission. In addition to the location determination properties of the invention, the geometry of the devices in the network, as well as the path loss information between pairs of devices, may be used to infer the location of absorbers and reflectors within the piconet. This absorption and reflection information may be used in creating the piconet tomography. The approach described in this specification may be applied in conjunction with the Bluetooth wireless Personal Area Network (PAN) specification to determine device locations, mitigate the effects of multi-path, and perform indoor location and security functions, and other application functions requiring cost-effective location determination.
    • 描述了用于微微网位置确定和断层摄影的技术。 该技术结合发射功率电平使用接收信号强度指示符(RSSI)值来确定使用跳频扩频传输的小型网络内的每个设备的相对位置。 除了本发明的位置确定性质之外,网络中的设备的几何形状以及设备对之间的路径损耗信息可以用于推断微微网内的吸收器和反射器的位置。 该吸收和反射信息可以用于创建微微子层析成像。 本说明书中描述的方法可以与蓝牙无线个人局域网(PAN)规范结合使用,以确定设备位置,减轻多路径的影响,以及执行室内位置和安全功能,以及需要成本效益的其他应用功能, 有效位置确定。
    • 8. 发明授权
    • Method for rigid body discovery and peer-to-peer ranging in a scatternet and communications node
    • 用于在散点网络和通信节点中进行刚体发现和对等测距的方法
    • US07362724B2
    • 2008-04-22
    • US10616112
    • 2003-07-09
    • Jian HuangLance E. HesterYan HuangSpyros KyperountasFeng NiuQicai Shi
    • Jian HuangLance E. HesterYan HuangSpyros KyperountasFeng NiuQicai Shi
    • H04Q7/00
    • H04W8/005G01S5/0289H04W84/18H04W84/20H04W92/02
    • A method for peer-to-peer ranging and discovery of a rigid body existing in a scatternet having piconets and nodes includes the steps of defining a node (12) in a piconet (10) to be a piconet controller (PNC) having controller functions, locating a rigid body seed including the node (12), and discovering a rigid body by sequentially downloading controller functions of the piconet controller (12) to at least one border node. Also provided is a communications node including a receiver for receiving communications from other communications nodes in a communications range (R), a transmitter for sending communications to other communications nodes in the communications range (R), a memory storing at least ranging information and a unique identification for describing the node, and a processor connected to the receiver, to the transmitter, and to the memory, the processor being programmed to carry out the method according to the present invention.
    • 存在于具有微微网和节点的分散网络中的刚体的对等测距和发现的方法包括以下步骤:将微微网(10)中的节点(12)定义为具有控制器功能的微微网控制器(PNC) ,定位包括所述节点(12)的刚体,以及通过将微微网控制器(12)的控制器功能顺序地下载到至少一个边界节点来发现刚体。 还提供了一种通信节点,其包括用于从通信范围(R)中的其他通信节点接收通信的接收机,用于向通信范围(R)中的其他通信节点发送通信的发射机,至少存储测距信息的存储器和 用于描述节点的唯一标识,以及连接到接收器的处理器,发送器和存储器,处理器被编程以执行根据本发明的方法。