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    DISTRIBUTED OPTICAL FIBER SENSOR BASED ON ROMAN AND BRILLOUIN SCATTERING
    41.
    发明申请
    DISTRIBUTED OPTICAL FIBER SENSOR BASED ON ROMAN AND BRILLOUIN SCATTERING 失效
    基于罗马和布朗散射的分布式光纤传感器

    公开(公告)号：US20130020486A1

    公开(公告)日：2013-01-24

    申请号：US13637910

    申请日：2010-08-20

    申请人： Zaixuan Zhang ,  Chenxia Li ,  ShangZhong Jin ,  Jianfeng Wang ,  Huaping Gong ,  Yi Li

    发明人： Zaixuan Zhang ,  Chenxia Li ,  ShangZhong Jin ,  Jianfeng Wang ,  Huaping Gong ,  Yi Li

    IPC分类号： G01N21/65

    CPC分类号： G01B11/16 ,  G01D5/35364 ,  G01K11/32 ,  G01L1/242 ,  G01L1/247

    摘要： A distributed optical fiber sensor based on Raman and Brillouin scattering is provided. The distributed optical fiber sensor includes a semiconductor FP cavity pulsed wideband optical fiber laser (11), a semiconductor external-cavity continuous narrowband optical fiber laser (12), a wave separator (13), an electro-optic modulator (14), an isolator (15), an Er-doped optical fiber amplifier (16), a bidirectional coupler (17), an integrated wavelength division multiplexer (19), a first photoelectric receiving and amplifying module (20), a second photoelectric receiving and amplifying module (21), a direct detection system (22), a narrowband optical fiber transmission grating (23), a circulator (24) and a coherence detection module (25). The temperature and the strain can be measured simultaneously, and the signal-to-noise ratio of the system is enhanced.

    摘要翻译： 提供了一种基于拉曼和布里渊散射的分布式光纤传感器。 分布式光纤传感器包括半导体FP腔脉冲宽带光纤激光器（11），半导体外腔连续窄带光纤激光器（12），波分离器（13），电光调制器（14）， 隔离器（15），掺铒光纤放大器（16），双向耦合器（17），集成波分复用器（19），第一光电接收和放大模块（20），第二光电接收和放大模块 （21），直接检测系统（22），窄带光纤传输光栅（23），循环器（24）和相干检测模块（25）。 可以同时测量温度和应变，提高系统的信噪比。

    MULTIPLE CHANNEL SUPPORT IN DISTRIBUTED WIRELESS SYSTEMS
    42.
    发明申请
    MULTIPLE CHANNEL SUPPORT IN DISTRIBUTED WIRELESS SYSTEMS 有权
    分布式无线系统中的多信道支持

    公开(公告)号：US20100304772A1

    公开(公告)日：2010-12-02

    申请号：US12746271

    申请日：2008-12-05

    申请人： Jianfeng Wang ,  Kiran S. Challapali

    发明人： Jianfeng Wang ,  Kiran S. Challapali

    IPC分类号： H04W74/00

    CPC分类号： H04W72/1278 ,  H04W16/14 ,  H04W48/08 ,  H04W56/0015 ,  H04W56/003 ,  H04W88/06

    摘要： To facilitate multi-channel communications over distributed-control radio networks, the timing of networks on multiple substantially independent channels are adjusted (350) so as to establish a common time base among the networks. With this common time base, data is transmitted concurrently (230), using the bandwidth provided by the multiple networks. To further optimize the efficiency of this technique for cognitive radio networks, the quiet period (QP) and signaling window (SW) on each network are scheduled (355) to provide overlapping quiet periods (QP) and/or overlapping signaling windows (SW). Preferably, each multi-channel user is assigned (360) the same time slot in the beacon periods (210) of the network on each channel, thereby facilitating efficient beacon transmission and reception.

    摘要翻译： 为了促进分布式控制无线电网络上的多信道通信，调整多个基本上独立的信道上的网络的定时（350），以便在网络之间建立公共时基。 利用该公共时基，使用由多个网络提供的带宽同时传输数据（230）。 为了进一步优化用于认知无线电网络的该技术的效率，调度每个网络上的安静时段（QP）和信令窗口（SW）（355）以提供重叠的安静时段（QP）和/或重叠的信令窗口（SW） 。 优选地，每个多信道用户在每个信道上的网络的信标周期（210）中分配（360）相同的时隙，从而有助于有效的信标发送和接收。

    CHANNEL MANAGEMENT METHOD IN A DISTRIBUTED SPECTRUM COGNITIVE RADIO NETWORK
    43.
    发明申请
    CHANNEL MANAGEMENT METHOD IN A DISTRIBUTED SPECTRUM COGNITIVE RADIO NETWORK 有权
    分布式光谱认证无线电网络中的信道管理方法

    公开(公告)号：US20100271948A1

    公开(公告)日：2010-10-28

    申请号：US12746261

    申请日：2008-12-05

    申请人： Kiran S. Challapali ,  Jianfeng Wang

    发明人： Kiran S. Challapali ,  Jianfeng Wang

    IPC分类号： H04L12/26

    CPC分类号： H04W72/085 ,  H04W16/14 ,  H04W36/06

    摘要： A source-assisted channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data handles a plurality of communicating devices (1, 2, 3) forming a group, and manages channels with no separate controller that is referenced in applicable IEEE standard. The source makes the reservation on behalf of the device group knows traffic schedule, and determines out-of-band channel scanning, back up channel and channel vacation. The method uses a flexible MAC superframe structure and proactively scans for back-up channels which could be used in lieu of the current channel, identifies devices in the group which should vacate a current channel when any one device from the group of communicating devices (1, 2, 3) detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule. The method ensures that no interference is caused to existing users and maintains QoS.

    摘要翻译： 处理多媒体流数据源的分布式频谱认知无线电无线网络中的源辅助信道管理方法处理形成组的多个通信设备（1,2,3），并且管理没有单独控制器的信道， 适用的IEEE标准。 源代表设备组的预约知道流量调度，并确定带外频道扫描，备份频道和频道休假。 该方法使用灵活的MAC超帧结构，并主动扫描可用于代替当前信道的备用信道，识别当来自通信设备组（1）的任何一个设备时，应当腾出当前信道的组中的设备 ，2,3）检测在线人员，并且基于所述业务调度确定何时无线网络应该腾出当前频道。 该方法确保对现有用户不产生干扰，维护QoS。

    Coordinated directional medium access control in a wireless network
    44.
    发明申请
    Coordinated directional medium access control in a wireless network 审中-公开
    无线网络中的协调定向介质访问控制

    公开(公告)号：US20060209772A1

    公开(公告)日：2006-09-21

    申请号：US11080041

    申请日：2005-03-15

    申请人： Yuguang Fang ,  Jianfeng Wang ,  Dapeng Wu

    发明人： Yuguang Fang ,  Jianfeng Wang ,  Dapeng Wu

    IPC分类号： H04Q7/24

    CPC分类号： H04W84/20 ,  H04W16/30 ,  H04W74/02

    摘要： A method of simultaneously transmitting and receiving multiple data packets over wireless channels among the nodes of a wireless network is provided. The method includes automatically selecting a master sending node and corresponding master receiving node in response to an omni-directionally transmitted request to send during a contention period. The method also includes selecting a slave sending node and corresponding slave receiving node if a spatial reuse ratio correspond to the master-node pair is less than a predetermined threshold and if directional data transmissions between the slave sending node and corresponding slave receiving node avoid interfering with directional data transmissions between the master nodes and other pairs of slave nodes. The method further includes causing the master sending node and slave sending node to directionally transmit data packets during a coordination period.

    摘要翻译： 提供了一种在无线网络的节点之间通过无线信道同时发送和接收多个数据分组的方法。 所述方法包括：响应于在竞争期间发送的全方向发送的请求，自动选择主发送节点和相应的主接收节点。 该方法还包括如果对应于主节点对的空间复用比率小于预定阈值，则选择从发送节点和对应的从接收节点，并且如果从发送节点和对应的从接收节点之间的定向数据传输避免干扰 主节点与其他从属节点对之间的方向数据传输。 该方法还包括使主发送节点和从发送节点在协调周期期间定向发送数据分组。

    Method and system for enabling multiple transmission in wireless systems
    45.
    发明授权
    Method and system for enabling multiple transmission in wireless systems 有权

    公开(公告)号：US09730216B2

    公开(公告)日：2017-08-08

    申请号：US13808350

    申请日：2011-07-05

    申请人： Jianfeng Wang ,  Monisha Ghosh

    发明人： Jianfeng Wang ,  Monisha Ghosh

    IPC分类号： H04W72/04 ,  H04W28/26 ,  H04L5/00

    CPC分类号： H04W72/0446 ,  H04L5/0005 ,  H04W28/26

    摘要： A method (900) for medium access reservation in a multiband wireless network comprises determining available slots (220) for reservation in a superframe (210) for reservation across multiple channels (S910); generating channel reservation protocol (CRP) availability information element (IE) (310) to indicate the available slots on a main channel; generating one or more Extended-Channel CRP availability IEs (500) to indicate the available slots on one or more respective extended channels (S920); exchanging the CRP availability IE and the Extended-Channel CRP availability IEs between a receiving device and a transmitting device (S930); and generating a Multiband CRP IE (600) to reserve slots that are available on the receiving device and the transmitting device (S940).

    Network entry and device discovery for cognitive radio networks
    46.
    发明授权
    Network entry and device discovery for cognitive radio networks 有权
    认知无线电网络的网络入口和设备发现

    公开(公告)号：US08817710B2

    公开(公告)日：2014-08-26

    申请号：US12744409

    申请日：2008-11-24

    申请人： Jianfeng Wang ,  Kiran Challapali

    发明人： Jianfeng Wang ,  Kiran Challapali

    IPC分类号： H04W4/00 ,  H04W72/04

    CPC分类号： H04W72/044 ,  H04W48/16

    摘要： A device (400) scans and classifies each channel within a spectrum of channels (215-270) as being occupied or unoccupied (255), and, if occupied, whether it is occupied by a primary user (240), a secondary user (230), or an unknown user (260). As a secondary device (400), transmissions are avoided on channels occupied by primary users (490). The device selectively joins an existing network of secondary devices, or establishes a new network on an unoccupied channel (125), based on the quality of service (QoS) that the channel can provide and/or other factors. If the device is paired with a target device (115), the paired device advertises itself on a selected channel (345-360) for a period that is at least as long as the time required to scan all channels, to facilitate discovery in the event that the target device is also in a search mode. The advertising duration randomly alternates (345) among integer multiples of the scan duration.

    摘要翻译： 设备（400）扫描并分类频道（215-270）内的每个信道被占用或未被占用（255），并且如果被占用，是否被主用户（240）占用，次用户（ 230）或未知用户（260）。 作为辅助设备（400），在主要用户（490）占用的信道上避免传输。 设备选择性地加入二次设备的现有网络，或者基于信道可以提供的服务质量（QoS）和/或其他因素在未占用信道（125）上建立新网络。 如果设备与目标设备（115）配对，则配对设备在所选频道（345-360）上通告自身的持续时间至少等于扫描所有频道所需的时间，以便于在 目标设备也处于搜索模式的事件。 广告持续时间的整数倍之间随机交替（345）。

    Distributed optical fiber sensor based on Raman and Brillouin scattering
    47.
    发明授权
    Distributed optical fiber sensor based on Raman and Brillouin scattering 失效
    基于拉曼和布里渊散射的分布式光纤传感器

    公开(公告)号：US08785859B2

    公开(公告)日：2014-07-22

    申请号：US13637910

    申请日：2010-08-20

    申请人： Zaixuan Zhang ,  Chenxia Li ,  Shangzhong Jin ,  Jianfeng Wang ,  Huaping Gong ,  Yi Li

    发明人： Zaixuan Zhang ,  Chenxia Li ,  Shangzhong Jin ,  Jianfeng Wang ,  Huaping Gong ,  Yi Li

    IPC分类号： G01J5/02 ,  H01S3/00 ,  G01L1/24 ,  G01B11/16 ,  G01D5/353 ,  G01K11/32

    CPC分类号： G01B11/16 ,  G01D5/35364 ,  G01K11/32 ,  G01L1/242 ,  G01L1/247

    摘要： A distributed optical fiber sensor based on Raman and Brillouin scattering is provided. The distributed optical fiber sensor includes a semiconductor FP cavity pulsed wideband optical fiber laser (11), a semiconductor external-cavity continuous narrowband optical fiber laser (12), a wave separator (13), an electro-optic modulator (14), an isolator (15), an Er-doped optical fiber amplifier (16), a bidirectional coupler (17), an integrated wavelength division multiplexer (19), a first photoelectric receiving and amplifying module (20), a second photoelectric receiving and amplifying module (21), a direct detection system (22), a narrowband optical fiber transmission grating (23), a circulator (24) and a coherence detection module (25). The temperature and the strain can be measured simultaneously, and the signal-to-noise ratio of the system is enhanced.

    摘要翻译： 提供了一种基于拉曼和布里渊散射的分布式光纤传感器。 分布式光纤传感器包括半导体FP腔脉冲宽带光纤激光器（11），半导体外腔连续窄带光纤激光器（12），波分离器（13），电光调制器（14）， 隔离器（15），掺铒光纤放大器（16），双向耦合器（17），集成波分复用器（19），第一光电接收和放大模块（20），第二光电接收和放大模块 （21），直接检测系统（22），窄带光纤传输光栅（23），循环器（24）和相干检测模块（25）。 可以同时测量温度和应变，提高系统的信噪比。

    AUTHENTICATION AND AUTHORIZATION OF COGNITIVE RADIO DEVICES
    49.
    发明申请
    AUTHENTICATION AND AUTHORIZATION OF COGNITIVE RADIO DEVICES 有权
    认证无线电设备的认证和授权

    公开(公告)号：US20130303128A1

    公开(公告)日：2013-11-14

    申请号：US13976487

    申请日：2012-01-12

    申请人： Jianfeng Wang ,  Monisha Ghosh

    发明人： Jianfeng Wang ,  Monisha Ghosh

    IPC分类号： H04W12/06

    CPC分类号： H04W12/06 ,  H04L41/5058 ,  H04L63/0876 ,  H04W4/025 ,  H04W48/02 ,  H04W80/02

    摘要： A method (300) of authentication and authorization of cognitive radio devices comprises generating a registration request message (S320); sending the registration request to a spectrum manager;receiving a registration response message from the spectrum manager (S330); generating an authorization request message (S360); upon receiving of an authorization response message, generating a verification response message (S370); and sending the verification response message to the cognitive radio device to be authenticated, such that the cognitive radio device is authenticated and authorized to communicate on channels designated in the verification response message (S380).

    摘要翻译： 认知无线电设备的认证和授权的方法（300）包括生成注册请求消息（S320）; 向频谱管理器发送注册请求;从频谱管理器接收注册响应消息（S330）; 生成授权请求消息（S360）; 在接收到授权响应消息时，生成验证响应消息（S370）; 并将所述验证响应消息发送到认证无线电设备以进行认证，使得所述认知无线电设备被认证并被授权在所述验证响应消息中指定的信道上进行通信（S380）。