Pre-emptive roaming mechanism allowing for enhanced QoS in wireless network environments
    21.
    发明申请
    Pre-emptive roaming mechanism allowing for enhanced QoS in wireless network environments 有权
    先进的漫游机制,可在无线网络环境中实现增强的QoS

    公开(公告)号:US20060187873A1

    公开(公告)日:2006-08-24

    申请号:US11182264

    申请日:2005-07-15

    IPC分类号: H04Q7/00

    CPC分类号: H04W48/20 H04W36/08 H04W48/08

    摘要: A preemptive roaming mechanism in wireless network environments. In one implementation, the present invention provides a wireless client that implements a preemptive roaming mode that, when an attribute of the signal (e.g., Signal to Noise Ratio (SNR), etc.) between the access point with which the client is currently associated crosses a threshold, scans for other access points with which to associate. In one implementation, the client switches between the scanning mode and a traffic mode to allow data to be transferred between the client and the current access point. The pre-emptive roaming functionality can be configured to support desired data rates or other QoS levels.

    摘要翻译: 无线网络环境中的抢占式漫游机制。 在一个实施方式中,本发明提供了一种无线客户机,其实现抢占式漫游模式,当客户端当前关联的接入点之间的信号属性(例如,信噪比(SNR)等) 跨越阈值,扫描与其关联的其他访问点。 在一个实现中,客户端在扫描模式和流量模式之间切换,以允许在客户端和当前接入点之间传输数据。 抢占式漫游功能可配置为支持所需的数据速率或其他QoS级别。

    RFID readers and systems initializing after antenna switch and methods
    23.
    发明授权
    RFID readers and systems initializing after antenna switch and methods 有权
    RFID阅读器和系统在天线切换和方法之后初始化

    公开(公告)号:US07920046B1

    公开(公告)日:2011-04-05

    申请号:US11774338

    申请日:2007-07-06

    IPC分类号: G05B23/02

    CPC分类号: G05B15/02

    摘要: RFID readers, reader systems, and methods are provided for processing RFID tags through interruptions for antenna change or other reasons. If the reason for the interruption is an antenna change, the reader restarts processing the tags initializing any operational parameters. If the reason is other than an antenna change, the reader determines whether the operation is to be continued or to be restarted upon power up and proceeds accordingly.

    摘要翻译: 提供RFID读取器,读取器系统和方法用于通过中断来改变RFID标签以用于天线改变或其它原因。 如果中断的原因是天线变化,则读取器重新开始处理标签来初始化任何操作参数。 如果原因不是天线变化,读者会决定是否要继续操作或在上电时重新开始操作,并相应地进行。

    Performance driven adjustment of RFID waveform shape
    24.
    发明申请
    Performance driven adjustment of RFID waveform shape 有权
    性能驱动调整RFID波形形状

    公开(公告)号:US20060261955A1

    公开(公告)日:2006-11-23

    申请号:US11412172

    申请日:2006-04-25

    IPC分类号: G08B13/14

    CPC分类号: G06K7/0008 G06K19/0723

    摘要: Systems, software, devices, and methods are described for an RFID reader system to communicate with RFID tags. RF energy encountered in conjunction with using a selected channel is detected and used to adjust a waveform shaping parameter in combination with a performance requirement. RF waves can be transmitted from the reader to the RFID tags and RF waves can be backscattered from the RFID tags. At least some of the RF waves transmitted to or backscattered from the RFID tags have a waveform with a shape according to the adjusted waveform shaping parameter.

    摘要翻译: 描述了RFID读取器系统与RFID标签通信的系统,软件,设备和方法。 检测并结合使用所选通道遇到的RF能量,并结合演奏要求调整波形整形参数。 RF波可以从读取器发送到RFID标签,并且RF波可以从RFID标签反向散射。 从RFID标签发射或反向散射的至少一些RF波具有根据经调整的波形整形参数的形状的波形。

    Location of wireless nodes using signal strength weighting metric
    25.
    发明申请
    Location of wireless nodes using signal strength weighting metric 有权
    使用信号强度加权度量的无线节点的位置

    公开(公告)号:US20050208952A1

    公开(公告)日:2005-09-22

    申请号:US10802366

    申请日:2004-03-16

    摘要: Methods, apparatuses, and systems directed to a wireless node location mechanism that uses a signal strength weighting metric to improve the accuracy of estimating the location of a wireless node based on signals detected among a plurality of radio transceivers. In certain implementations, the wireless node location mechanism further incorporates a differential signal strength metric to reduce the errors caused by variations in wireless node transmit power, errors in signal strength detection, and/or direction-dependent path loss. As opposed to using the absolute signal strength or power of an RF signal transmitted by a wireless node, implementations of the present invention compare the differences between signal strength values detected at various pairs of radio receivers to corresponding differences characterized in a model of the RF environment. One implementation of the invention searches for the locations in the model between each pair of radio receivers where their signal strength is different by an observed amount.

    摘要翻译: 基于使用信号强度加权度量的无线节点定位机构的方法,装置和系统,其基于在多个无线电收发器中检测到的信号来提高无线节点的位置的准确性。 在某些实现中,无线节点定位机制还包括差分信号强度度量,以减少由无线节点发射功率的变化,信号强度检测中的误差和/或与方向相关的路径损耗引起的误差。 与使用由无线节点发送的RF信号的绝对信号强度或功率相反,本发明的实施方式将在各种无线电接收机检测到的信号强度值之间的差异与RF环境模型相对应的对应差异进行比较 。 本发明的一个实现方式是在每一对无线电接收机之间的模型中搜索其信号强度与观测量不同的位置。

    System and method for corrosion maintenance scheduling
    26.
    发明申请
    System and method for corrosion maintenance scheduling 审中-公开
    腐蚀维护计划的系统和方法

    公开(公告)号:US20050148081A1

    公开(公告)日:2005-07-07

    申请号:US10751449

    申请日:2004-01-06

    IPC分类号: G01N17/04 G01N33/26

    CPC分类号: G01N17/043

    摘要: A system for scheduling maintenance on equipment includes a metallic element placed on or near a piece of equipment in an environment, a measuring and data storing device configured to measure the resistance of the metallic element, and a computer configured to determine the amount of corrosion experienced by the metallic element based on the resistance measured by the measuring and data storing device and to correlate the amount of corrosion with a maintenance schedule for the piece of equipment. A method for scheduling maintenance on a piece of equipment is also described. The method includes placing a metallic element on or near the piece of equipment, determining the amount of corrosion experienced by the metallic element, and correlating the amount of corrosion with a maintenance schedule for the piece of equipment.

    摘要翻译: 用于调度设备维护的系统包括放置在环境中的一件设备上或附近的金属元件,被配置为测量金属元件的电阻的测量和数据存储装置以及被配置为确定经历的腐蚀量的计算机 通过基于由测量和数据存储装置测量的电阻的金属元件,并将腐蚀量与该设备的维护计划相关联。 还描述了一种用于在一件设备上调度维护的方法。 该方法包括将金属元件放置在设备上或附近,确定金属元件所经历的腐蚀的量,并将腐蚀量与该设备的维护计划相关联。

    RFID readers and systems with antenna switching upon detecting too few tags and methods
    28.
    发明授权
    RFID readers and systems with antenna switching upon detecting too few tags and methods 有权
    RFID读取器和具有天线切换的系统检测到太少的标签和方法

    公开(公告)号:US08120494B1

    公开(公告)日:2012-02-21

    申请号:US11749281

    申请日:2007-05-16

    IPC分类号: G08B13/14

    摘要: RFID readers, reader systems, and methods are provided that utilize smart antenna switching. A first signal is transmitted from a first antenna estimating presence of tags within the antennas field of view. If fewer than a predefined number of tags are estimated, the system switches to a second antenna. Otherwise, the tags found in the field of view of the first antenna are inventoried before switching to the second antenna.

    摘要翻译: 提供利用智能天线切换的RFID读取器,读取器系统和方法。 第一信号从估计天线范围内的标签的存在的第一天线发送。 如果估计少于预定数量的标签,系统将切换到第二个天线。 否则,在切换到第二天线之前,存储在第一天线的视野中找到的标签。

    Discovery of Rogue Access Point Location in Wireless Network Environments
    29.
    发明申请
    Discovery of Rogue Access Point Location in Wireless Network Environments 有权
    在无线网络环境中发现无线接入点位置

    公开(公告)号:US20080101283A1

    公开(公告)日:2008-05-01

    申请号:US11965162

    申请日:2007-12-27

    IPC分类号: H04Q7/00

    摘要: Methods, apparatuses and systems facilitating location or containment of rogue or unauthorized access points on wireless computer network environments. Embodiments of the present invention support one to a plurality of rogue containment methodologies. A first rogue containment type involves identification of the physical connection of the rogue access point to the wired network infrastructure and, thus, allows for disabling of that physical connection to contain the rogue access point. Other rogue containment methods involve wireless techniques for containing the effect of rogue access points. In some embodiments, the present invention provides methods, apparatuses and systems facilitating network location of rogue access points to determine whether one or more rogue containment methodologies should be applied. As discussed below, the rogue location and containment functionality described herein can be applied to a wide variety of wireless network system architectures.

    摘要翻译: 在无线计算机网络环境中方便,设备和系统便于定位或遏制流氓或未经授权的接入点。 本发明的实施例支持一个到多个流氓封闭方法。 第一流氓包围类型涉及识别流氓接入点到有线网络基础设施的物理连接,因此允许禁止该物理连接以包含流氓接入点。 其他流氓遏制方法涉及无线技术,用于包含流氓接入点的影响。 在一些实施例中,本发明提供促进流氓接入点的网络位置的方法,装置和系统,以确定是否应该应用一个或多个流氓容纳方法。 如下所述,本文描述的流氓位置和容纳功能可以应用于各种各样的无线网络系统架构。

    Local processing of received RFID tag responses
    30.
    发明申请
    Local processing of received RFID tag responses 有权
    接收RFID标签响应的本地处理

    公开(公告)号:US20070046432A1

    公开(公告)日:2007-03-01

    申请号:US11472179

    申请日:2006-06-20

    IPC分类号: H04Q5/22

    摘要: Radio frequency identification (RFID) tags selected for inventorying using combination of preselect and/or post select criteria. The selection commands can be for selecting according to a tag memory content, by invoking the mask address or by comparing other tag characteristics. Selection criteria can be determined locally at a modem block of a reader or provided to the modem block by higher layers of the reader. Tags meeting the selection criteria are reported to the higher layers for further actions. Some tags may be held while waiting for instructions from the higher layer block(s).

    摘要翻译: 使用预选和/或后选择标准的组合选择进行库存的射频识别(RFID)标签。 选择命令可以根据标签存储器内容,通过调用掩码地址或通过比较其他标签特征来进行选择。 选择标准可以在读取器的调制解调器块本地确定,或者由阅读器的较高层提供给调制解调器块。 满足选择标准的标签被报告给较高层以进行进一步的操作。 在等待来自较高层块的指令的同时可以保持一些标签。