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1.发明授权公开(公告)号：US06597915B2
公开(公告)日：2003-07-22
申请号：US10022944
申请日：2001-12-18
申请人： Qicai Shi , Edgar H. Callaway, Jr. , Jian Huang
发明人： Qicai Shi , Edgar H. Callaway, Jr. , Jian Huang
IPC分类号： H04Q720
CPC分类号： H04W4/02 , H04W40/246 , H04W40/248 , H04W84/18 , H04W84/22
摘要： Location related information is collected for a network of communication devices that each is operable in a coordinating mode and in a non-coordinating mode. While in the coordinating mode, each communication device collects and stores location determining information (410, 420). Using the location determining information collected by one or more of the communication devices over multiple instances of operation in the coordinating mode, location information is calculated or updated for selected devices within the network (510, 520, 530, 540). In one embodiment, each device operates to mediate communication activities among others devices of the network while in the coordinating mode.
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公开(公告)号：US07171476B2
公开(公告)日：2007-01-30
申请号：US10125939
申请日：2002-04-19
申请人： Masahiro Maeda , Monique Bourgeois , Edgar H. Callaway, Jr. , Priscilla Chen , Jian Huang , Yan Huang , Qicai Shi
发明人： Masahiro Maeda , Monique Bourgeois , Edgar H. Callaway, Jr. , Priscilla Chen , Jian Huang , Yan Huang , Qicai Shi
CPC分类号： H04W84/20 , H04L1/1607 , H04L45/02 , H04L45/026 , H04L45/46 , H04W40/246 , H04W76/10 , H04W84/18
摘要： 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.
摘要翻译： 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。
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3.发明授权公开(公告)号：US06816493B2
公开(公告)日：2004-11-09
申请号：US09803322
申请日：2001-03-09
申请人： Qicai Shi , Jian Huang , Edgar H. Callaway, Jr.
发明人： Qicai Shi , Jian Huang , Edgar H. Callaway, Jr.
IPC分类号： H04L1228
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US06922432B2
公开(公告)日：2005-07-26
申请号：US09803258
申请日：2001-03-09
CPC分类号： H04B1/707
摘要： A signaling system is provided in which a spread spectrum code is cyclically shifted by a cyclical shift dictated by a bit pattern of one or more bits. The cyclically shifted spread spectrum code is used to modulate a carrier frequency, and transmitted from a transmitter to a receiver. At the receiver the signal including the cyclically shifted spectrum code is demodulated to recover the cyclically shifted code. The cyclical shift is then determined and the bit pattern which is associated with the cyclical shift is output. The method can be used in direct sequence spread spectrum communication.
摘要翻译： 提供了一种信号系统，其中扩频码被循环移位由一个或多个位的位模式指示的循环移位。 循环移位扩频码用于调制载波频率，并从发射机发射到接收机。 在接收机处，解调包括循环移位的频谱码的信号以恢复循环移位码。 然后确定循环移位，并输出与循环移位相关联的位模式。 该方法可用于直接序列扩频通信。
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公开(公告)号：US06745038B2
公开(公告)日：2004-06-01
申请号：US09845467
申请日：2001-04-30
IPC分类号： H04Q720
CPC分类号： H04W52/24 , H04B17/27 , H04B17/318 , H04W52/08
摘要： 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.
摘要翻译： 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。
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6.发明授权Procedures for merging the mediation device protocol with a network layer protocol 有权将中介设备协议与网络层协议合并的过程公开(公告)号：US07251222B2
公开(公告)日：2007-07-31
申请号：US10022935
申请日：2001-12-18
申请人： Priscilla Chen , Masahiro Maeda , Edgar H. Callaway, Jr. , Monique Bourgeois , Yan Huang , Jiang Huang , Qicai Shi
发明人： Priscilla Chen , Masahiro Maeda , Edgar H. Callaway, Jr. , Monique Bourgeois , Yan Huang , Jiang Huang , Qicai Shi
CPC分类号： H04L61/2038 , H04J3/0638 , H04L29/12254 , H04L45/02 , H04L45/026 , H04L45/26
摘要： A process for merging and using the Mediation Device Protocol with a network layer protocol. Under the merged protocol, each device joining a network enters into two stages: the Set-Up Stage and the Normal Operational Stage. During the Set-Up Stage, the device identifies its neighbors, builds a neighborhood list, obtains a Logical ID, and picks a parent node in the network. After the Set-Up Stage is complete, the device enters the Normal Operational Stage where it will send/receive control and data messages, invite and help new nodes to join the network, recover from broken links or topology changes, and other normal network operations.
摘要翻译： 用于将中介设备协议与网络层协议合并和使用的过程。 在合并协议下，加入网络的每个设备分为两个阶段：安装阶段和正常运行阶段。 在设置阶段，设备识别其邻居，建立邻居列表，获取逻辑ID，并选择网络中的父节点。 设置阶段完成后，设备进入正常操作阶段，发送/接收控制和数据消息，邀请和帮助新节点加入网络，从断链或拓扑变化恢复，以及其他正常的网络操作 。
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公开(公告)号：US06519275B2
公开(公告)日：2003-02-11
申请号：US10022942
申请日：2001-12-18
IPC分类号： H04B1707
CPC分类号： H04B1/7075
摘要： A system and method for orthogonal modulation of signals in communication systems. In the transmitter, differentially coded symbols are used to select time-shifted code sequences. The timing, or code position, of a code sequence is determined at the receiver by comparison to the previous code from the same channel, thus eliminating the need for dual-channel transmission and eliminating error due to differences in path propagation time. A fixed preamble code is also used to synchronize the receiver.
摘要翻译： 一种用于通信系统中信号正交调制的系统和方法。 在发射机中，使用差分编码符号来选择时移码序列。 通过与来自相同信道的先前代码进行比较，在接收器处确定码序列的定时或码位置，从而消除了对双信道传输的需要，并消除由于路径传播时间差异引起的误差。 固定的前导码也用于同步接收机。
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8.发明授权公开(公告)号：US08385932B2
公开(公告)日：2013-02-26
申请号：US12415864
申请日：2009-03-31
IPC分类号： H04W72/04
CPC分类号： H04L27/0006 , H04L5/0058 , H04L5/0071 , H04L5/0075 , H04W72/02 , H04W72/1215
摘要： A technique (300) and apparatus for sharing frequency spectrum amongst cognitive radios, without the use of a centralized control, is provided. By determining open segments of available spectrum within a brokered spectrum (306), and determining costs associated with those available segments (307), a CR device can identify an optimal spectral portion (308) within which to transmit (314) and grow (342) a narrowband signal. The occupied bandwidth growth is monitored such that cost associated with the growth does not exceed a cost threshold (341).
摘要翻译： 提供了一种技术（300）和用于在认知无线电之间共享频谱的装置，而不使用集中式控制。 通过确定经销频谱（306）内的可用频谱的开放段，并且确定与那些可用段（307）相关联的成本，CR设备可以识别在其中发送（314）并增长的最佳频谱部分（314） ）窄带信号。 监控占用带宽增长，使与增长相关的成本不超过成本阈值（341）。
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公开(公告)号：US06594317B2
公开(公告)日：2003-07-15
申请号：US10029038
申请日：2002-04-08
IPC分类号： H04L2700
CPC分类号： H04B1/707 , H04B14/026 , H04L23/02
摘要： A method and apparatus for encoding and decoding signals using code position modulation (CPM) in a communication system. The encoding method includes storing an N-chip pseudo-random noise sequence, such as an m-sequence, in a circular shift register and circularly shifting it to obtain a shifted m-sequence. The shifted m-sequence is compared to an m-bit symbol corresponding to the k bit information value. If the shifted m-sequence and the m-symbol match, the shifted m-sequence is output as the N-chip CPM sequence. Alternatively, the m-symbol is used as an initial condition for a pseudo-noise sequence generator. The corresponding decoder stores an N-chip m-sequence in a circular shift register and a correlates shifted version of the m-sequence with a received N-chip CPM sequence. When a peak in the correlation value is detected, an m-bit field is retrieved from the circular shift register and mapped back to a k-bit information value.
摘要翻译： 一种在通信系统中使用码位置调制（CPM）对信号进行编码和解码的方法和装置。 编码方法包括在圆形移位寄存器中存储诸如m序列的N码片伪随机噪声序列，并循环移位它以获得移位的m序列。 将移位的m序列与对应于k位信息值的m位符号进行比较。 如果移位的m序列和m符号匹配，则移位的m序列作为N码片CPM序列输出。 或者，将m符号用作伪噪声序列发生器的初始条件。 相应的解码器将N-码片m序列存储在循环移位寄存器中，并将m序列的移位版本与接收的N码片CPM序列进行相关。 当检测到相关值中的峰值时，从圆形移位寄存器检索m比特字段并将其映射回到k比特信息值。
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公开(公告)号：US08340168B2
公开(公告)日：2012-12-25
申请号：US13206605
申请日：2011-08-10
IPC分类号： H04B3/46
摘要： A method, system, network and device provide Smart Grid Radio Frequency Interference (RFI) detection. One or more symbols or chips present in one or more received radio frequency signals are detected and the presence of one or more erred symbols or chips in the detected one or more symbols present in the received one or more radio frequency signals determined. A correlation in time between the one or more erred symbols or chips and an infrastructure waveform associated with electrical infrastructure can be determined. When the determined correlation indicates the electrical infrastructure as a source of detectable radio frequency interference to a device, a pattern flag is generated. The pattern flag or pattern flag representation can be stored and/or transmitted.
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