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11.发明申请Method and System for Dynamically Assigning Channels Across Multiple Radios in a Wireless LAN 有权在无线局域网中多个无线电通道分配通道的方法和系统公开(公告)号：US20090296647A1
公开(公告)日：2009-12-03
申请号：US12540904
申请日：2009-08-13
申请人： Robert J. Friday , Patrice R. Calhous , Robert B. O'Hara, JR. , Alexander H. Hills , Paul F. Dietrich
发明人： Robert J. Friday , Patrice R. Calhous , Robert B. O'Hara, JR. , Alexander H. Hills , Paul F. Dietrich
IPC分类号： H04W72/12
CPC分类号： H04W72/082 , H04B17/24 , H04B17/309 , H04B17/318 , H04B17/382 , H04W72/0486 , H04W72/08 , H04W72/085 , H04W84/12
摘要： In a fixed channel wireless network system with a limited number of channels, assignment of the fixed channels between remote client elements and access elements is made systematically according to a set of criteria accounting for network loading and interference, then channel assignments are dynamically updated according to a priority to maintain optimal network performance with changing conditions of load and interference. The channel utilization problem is address at a system level rather than at a local level by treating the system as a three dimensional color mapping problem. All noise is treated as having a source in virtual access elements with an appropriate performance metric. The performance metric is used to select a channel set that minimize chances of interference and maximize user performance. Specifically, there are several parameter matrices which are managed and updated by a central resource management element, namely signal strength between elements, interference, and load. These matrices are used to find the optimal channel assignments for a predetermined limited set of assignable channels. In one implementation, the channel assignment methodology takes into account the interference associated with access elements operating on a selected channel, as well as the interference or energy that spills over (or is otherwise observable) on physical channels adjacent to the selected channel.
摘要翻译： 在具有有限数量的信道的固定信道无线网络系统中，根据负责网络负载和干扰的一组标准系统地对远程客户端元件和接入单元之间的固定信道进行分配，然后，信道分配根据 优先考虑负载和干扰条件下的最佳网络性能。 信道利用问题是通过将系统视为三维颜色映射问题而在系统级而不是在本地级的地址。 所有噪声被视为具有适当性能指标的虚拟访问元素中的源。 性能指标用于选择最小化干扰机会并最大化用户性能的通道集。 具体来说，存在由中央资源管理元件管理和更新的几个参数矩阵，即元件之间的信号强度，干扰和负载。 这些矩阵用于找到预定有限的一组可分配信道的最佳信道分配。 在一个实现中，信道分配方法考虑了与在所选信道上操作的接入单元相关联的干扰，以及在与所选择的信道相邻的物理信道上溢出（或以其它方式观察到）的干扰或能量。
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12.发明授权Method and system for dynamically assigning channels across multiple radios in a wireless LAN 有权用于在无线LAN中跨多个无线电设备动态分配信道的方法和系统公开(公告)号：US08488524B2
公开(公告)日：2013-07-16
申请号：US12540904
申请日：2009-08-13
申请人： Robert J. Friday , Patrice R. Calhous , Robert B. O'Hara, Jr. , Alexander H. Hills , Paul F. Dietrich
发明人： Robert J. Friday , Patrice R. Calhous , Robert B. O'Hara, Jr. , Alexander H. Hills , Paul F. Dietrich
IPC分类号： H04B7/005
CPC分类号： H04W72/082 , H04B17/24 , H04B17/309 , H04B17/318 , H04B17/382 , H04W72/0486 , H04W72/08 , H04W72/085 , H04W84/12
摘要： In a fixed channel wireless network system with a limited number of channels, assignment of the fixed channels between remote client elements and access elements is made systematically according to a set of criteria accounting for network loading and interference, then channel assignments are dynamically updated according to a priority to maintain optimal network performance with changing conditions of load and interference. The channel utilization problem is address at a system level rather than at a local level by treating the system as a three dimensional color mapping problem. All noise is treated as having a source in virtual access elements with an appropriate performance metric. The performance metric is used to select a channel set that minimize chances of interference and maximize user performance. Specifically, there are several parameter matrices which are managed and updated by a central resource management element, namely signal strength between elements, interference, and load. These matrices are used to find the optimal channel assignments for a predetermined limited set of assignable channels. In one implementation, the channel assignment methodology takes into account the interference associated with access elements operating on a selected channel, as well as the interference or energy that spills over (or is otherwise observable) on physical channels adjacent to the selected channel.
摘要翻译： 在具有有限数量的信道的固定信道无线网络系统中，根据负责网络负载和干扰的一组标准系统地对远程客户端元件和接入单元之间的固定信道进行分配，然后，信道分配根据 优先考虑负载和干扰条件下的最佳网络性能。 信道利用问题是通过将系统视为三维颜色映射问题而在系统级而不是在本地级的地址。 所有噪声被视为具有适当性能指标的虚拟访问元素中的源。 性能指标用于选择最小化干扰机会并最大化用户性能的通道集。 具体来说，存在由中央资源管理元件管理和更新的几个参数矩阵，即元件之间的信号强度，干扰和负载。 这些矩阵用于找到预定有限的一组可分配信道的最佳信道分配。 在一个实现中，信道分配方法考虑了与在所选信道上操作的接入单元相关联的干扰，以及在与所选择的信道相邻的物理信道上溢出（或以其它方式观察到）的干扰或能量。
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公开(公告)号：US07301926B1
公开(公告)日：2007-11-27
申请号：US10407357
申请日：2003-04-04
IPC分类号： H04Q7/24
摘要： Methods, apparatuses and systems enabling real-time analysis of coverage and other performance attributes of distributed or networked systems, such as wireless computer network environments. In one embodiment, the present invention utilizes information obtained from monitoring wireless communications in a wireless network system from remote client elements to access elements in relation to at least one attribute, such as signal strength and signal-to-noise ratio (SNR). Although the present invention has application to a variety of wireless network architectures, in one embodiment, the present invention is implemented in a wireless Local Area Network (WLAN) system having a hierarchical architecture comprising a central control element associated with at least one access element. The access element encapsulates data packets received from remote client elements including protocol and other information (such as attributes of the detected signal associated with the data packets), and tunnels the encapsulated data packets to the central control element. The central control element maintains and analyzes the information contained in the packets to analyze the coverage of the wireless network environment.
摘要翻译： 方法，设备和系统能够实时分析分布式或联网系统（如无线计算机网络环境）的覆盖范围和其他性能属性。 在一个实施例中，本发明利用从无线网络系统中的远程客户端元件监视无线通信而获得的信息，以便与诸如信号强度和信噪比（SNR）的至少一个属性相关的接入元件。 尽管本发明适用于各种无线网络架构，但是在一个实施例中，本发明在具有包括与至少一个接入元件相关联的中央控制元件的分层结构的无线局域网（WLAN）系统中实现。 访问单元封装从远程客户端元素接收的数据分组，包括协议和其他信息（例如与数据分组相关联的检测到的信号的属性），并将封装的数据分组隧道传送到中央控制单元。 中央控制元件维护和分析数据包中包含的信息，分析无线网络环境的覆盖范围。
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14.发明授权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：US08798018B2
公开(公告)日：2014-08-05
申请号：US12873987
申请日：2010-09-01
申请人： Robert J. Friday , Paul F. Dietrich
发明人： Robert J. Friday , Paul F. Dietrich
IPC分类号： H04W4/00
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。
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15.发明授权公开(公告)号：US07047014B1
公开(公告)日：2006-05-16
申请号：US10982153
申请日：2004-11-05
IPC分类号： H04Q7/20
摘要： Methods, apparatuses and systems directed to optimizing vector models for use in modeling RF propagation in desired physical environments. In one embodiment, the present invention can operate on pre-existing vector models. In other implementations, the present invention facilitates the conversion of raster images of buildings and other physical locations to vector formats for use in connection with the computational modeling of radio-frequency (RF) propagation. According to certain embodiments, the present invention is implemented within the context of a location diagram editing application that supports a line recognition filter, a snap filter and a merge filter which a user may individually select and configure. As discussed more fully below, the line recognition filter operates on the vector objects to adjust near-vertical lines (as defined by a configurable threshold angle) to vertical, and near-horizontal lines to horizontal. In some configuration modes, the line recognition filter may also delete lines that are oriented at an angle greater than a threshold from the x-axis and y-axis to, for example, clean up vector objects corresponding to text and other elements that are usually analytically irrelevant to modeling RF propagation. The snap filter, in one implementation, operates to extend closely spaced objects that are oriented within a threshold distance from each other. The merge filter operates, in one implementation, to merge closely spaced parallel lines to, for example, adjust the vector file to correctly model a wall with a single vector object. In one implementation, the output resulting from the invention is a vector file that has each wall accorded a given wall type, and is optimized for use in connection with an RF prediction engine.
摘要翻译： 用于优化矢量模型以用于在期望的物理环境中建模RF传播的方法，装置和系统。 在一个实施例中，本发明可以对预先存在的矢量模型进行操作。 在其他实现中，本发明有助于将建筑物和其他物理位置的光栅图像转换成与射频（RF）传播的计算建模相关联使用的向量格式。 根据某些实施例，本发明在支持线路识别过滤器，快照过滤器和合并过滤器的位置图编辑应用的上下文中实现，用户可以单独选择和配置。 如下面更全面地讨论的，线路识别滤波器对矢量对象进行操作，以将垂直线和水平线的近似垂直线（由可配置的阈值角度定义）调整到水平线。 在一些配置模式中，线路识别滤波器还可以将从x轴和y轴以大于阈值的角度定向的线路例如删除对应于文本和其他元素的例如清理向量对象 分析与RF传播建模无关。 在一个实施方式中，快速过滤器用于延伸彼此相邻的阈值距离内的紧密间隔的物体。 合并滤波器在一个实现中操作，以将紧密间隔的平行线合并为例如调整矢量文件以使用单个矢量对象来正确地建模墙壁。 在一个实施方式中，由本发明产生的输出是一个矢量文件，其具有符合给定墙壁类型的每个壁，并且被优化用于与RF预测引擎结合使用。
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16.发明授权Wireless node location mechanism featuring definition of search region to optimize location computation 有权无线节点定位机制，特征定义搜索区域，优化位置计算公开(公告)号：US08204512B2
公开(公告)日：2012-06-19
申请号：US12181576
申请日：2008-07-29
IPC分类号： H04W24/00
CPC分类号： G01S5/02 , G01S5/0252 , H04W24/00 , H04W64/00
摘要： A wireless node location mechanism that defines a search region to optimize the computations associated with estimating the location of a given wireless node. According to one implementation, a coverage map associated with each radio receiver that records signal strength data is defined out to a threshold signal strength level. Before computing the estimated location of a given wireless nodes, a search region is defined based on the intersection of the coverage maps associated with each radio receiver that detects the wireless node. Some implementations use information provided by the fact that certain radio receivers did not detect the wireless node to further optimize the location estimate. By defining a search region, which is a generally small area relative to the space encompassed by an entire RF environment, the present invention provides several advantages, such as reducing the processing time and/or power to compute estimated locations for wireless nodes.
摘要翻译： 无线节点定位机制，其定义搜索区域以优化与估计给定无线节点的位置相关联的计算。 根据一个实施方式，将与记录信号强度数据的每个无线电接收机相关联的覆盖图定义为阈值信号强度水平。 在计算给定无线节点的估计位置之前，基于与检测无线节点的每个无线电接收机相关联的覆盖图的交集来定义搜索区域。 一些实现使用由某些无线电接收机没有检测到无线节点以进一步优化位置估计的事实提供的信息。 通过定义搜索区域，其是相对于由整个RF环境所包含的空间的一般小的区域，本发明提供了若干优点，例如减少处理时间和/或功率来计算无线节点的估计位置。
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17.发明授权Dynamic transmit power configuration system for wireless network environments 有权用于无线网络环境的动态发射功率配置系统公开(公告)号：US07313113B1
公开(公告)日：2007-12-25
申请号：US10407372
申请日：2003-04-04
IPC分类号： H04Q7/00
CPC分类号： H04W52/34 , H04B17/318 , H04W24/00 , H04W48/16 , H04W52/245 , H04W88/08
摘要： Methods, apparatuses and systems facilitating the configuration of transmit power and coverage areas corresponding to access points in a wireless network environment. The present invention in one embodiment facilitates the dynamic configuration of coverage boundaries across a plurality of access points, improving the performance of the wireless network environment.
摘要翻译： 便于在无线网络环境中配置与接入点对应的发射功率和覆盖区域的方法，装置和系统。 在一个实施例中，本发明有助于跨越多个接入点的覆盖边界的动态配置，从而改善无线网络环境的性能。
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公开(公告)号：US07116988B2
公开(公告)日：2006-10-03
申请号：US10802366
申请日：2004-03-16
IPC分类号： H04Q7/20
CPC分类号： G01S5/0221 , G01S5/0252 , H04W4/023 , H04W64/00
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。
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19.发明授权Wireless node location mechanism using antenna pattern diversity to enhance accuracy of location estimates 有权使用天线模式分集的无线节点定位机制提高位置估计的准确性公开(公告)号：US07532896B2
公开(公告)日：2009-05-12
申请号：US11751456
申请日：2007-05-21
申请人： Robert J. Friday , Paul F. Dietrich
发明人： Robert J. Friday , Paul F. Dietrich
IPC分类号： H04W24/00
CPC分类号： G01S5/0252 , G01S5/14 , H04B7/0805 , H04B17/27 , H04B17/318 , H04B17/391
摘要： A wireless node RF Fingerprinting location mechanism that uses multiple antenna patterns to enhance the accuracy of wireless node location in an RF environment. In one implementation, substantially non-overlapping antenna pattern diversity is used to provide a degree of sectorization in computing the estimated location of a wireless node.
摘要翻译： 无线节点RF指纹定位机制，其使用多个天线模式来增强RF环境中无线节点位置的准确性。 在一个实现中，使用基本上不重叠的天线模式分集来在计算无线节点的估计位置时提供一定程度的扇区化。
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20.发明授权Wireless node location mechanism featuring definition of search region to optimize location computation 有权无线节点定位机制，特征定义搜索区域，优化位置计算公开(公告)号：US07433696B2
公开(公告)日：2008-10-07
申请号：US10848276
申请日：2004-05-18
IPC分类号： H04Q7/20
CPC分类号： G01S5/02 , G01S5/0252 , H04W24/00 , H04W64/00
摘要： A wireless node location mechanism that defines a search region to optimize the computations associated with estimating the location of a given wireless node. According to one implementation, a coverage map associated with each radio receiver that records signal strength data is defined out to a threshold signal strength level. Before computing the estimated location of a given wireless nodes, a search region is defined based on the intersection of the coverage maps associated with each radio receiver that detects the wireless node. Some implementations use information provided by the fact that certain radio receivers did not detect the wireless node to further optimize the location estimate. By defining a search region, which is a generally small area relative to the space encompassed by an entire RF environment, the present invention provides several advantages, such as reducing the processing time and/or power to compute estimated locations for wireless nodes.
摘要翻译： 无线节点定位机制，其定义搜索区域以优化与估计给定无线节点的位置相关联的计算。 根据一个实施方式，将与记录信号强度数据的每个无线电接收机相关联的覆盖图定义为阈值信号强度水平。 在计算给定无线节点的估计位置之前，基于与检测无线节点的每个无线电接收机相关联的覆盖图的交集来定义搜索区域。 一些实现使用由某些无线电接收机没有检测到无线节点以进一步优化位置估计的事实提供的信息。 通过定义搜索区域，其是相对于由整个RF环境所包含的空间的一般小的区域，本发明提供了若干优点，例如减少处理时间和/或功率来计算无线节点的估计位置。
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