公开(公告)号：US20090052411A1

公开(公告)日：2009-02-26

申请号：US11842864

申请日：2007-08-21

申请人： Hang Ching Leung ,  Piu Bill Wong ,  Kin Nang Lau

发明人： Hang Ching Leung ,  Piu Bill Wong ,  Kin Nang Lau

IPC分类号： H04B15/00 ,  H04L12/413

CPC分类号： H04L12/413

摘要： Systems and methods which control communications in a carrier sense multiple access environment to provide a balance between communication sensitivity and transmission availability are shown. Adaptive interference control techniques of embodiments operate to determine a media error time metric representing the time associated with receiving interfering signals. The media error time metric of embodiments is used to adjust operation of various network systems in order to adjust communication sensitivity and/or transmission availability. Desensitizing thresholds and sensitizing thresholds may be used to define operating boundaries, such that desensitizing thresholds are used to control network desensitize actions which result in decreased error times and sensitizing thresholds are used to control network sensitizing actions which result in increased error times. Error time metrics and corresponding desensitizing and sensitizing thresholds may be utilized with respect to a plurality of radios. Embodiments provide for adjustment of control parameters based upon historical operation.

摘要翻译： 示出了控制载波中的通信的系统和方法感测多个接入环境以提供通信灵敏度和传输可用性之间的平衡。 实施例的自适应干扰控制技术操作以确定表示与接收干扰信号相关联的时间的媒体误差时间度量。 实施例的媒体错误时间度量用于调整各种网络系统的操作，以便调整通信灵敏度和/或传输可用性。 可以使用脱敏阈值和敏化阈值来定义操作边界，使得使用脱敏阈值来控制导致减少错误时间的网络脱敏动作，并且使用敏化阈值来控制导致增加的错误时间的网络敏感动作。 相对于多个无线电，可以利用误差时间度量和相应的减敏和敏化阈值。 实施例提供了基于历史操作来调整控制参数。

公开(公告)号：US20090005121A1

公开(公告)日：2009-01-01

申请号：US11770559

申请日：2007-06-28

申请人： Piu Bill Wong ,  Hang Ching Leung ,  Chun Kit Chan

发明人： Piu Bill Wong ,  Hang Ching Leung ,  Chun Kit Chan

IPC分类号： H01Q25/00 ,  H01Q3/00

CPC分类号： H01Q3/26 ,  H01Q1/246 ,  H01Q21/205 ,  H01Q25/005

摘要： Systems and methods which utilize antenna pattern or antenna beam scanning techniques to provide communication of payload traffic are shown. A base station radio is provided wireless communication links with a plurality of stations for communication of payload traffic between the base station and stations using a succession of antenna patterns. The antenna patterns are scanned in succession, such as randomly, quasi-randomly, sequentially, or according to a schedule. An antenna pattern scheduler may be used to implement antenna pattern scanning and traffic timing. Cooperative scheduling with respect to a plurality of base stations may be provided. Selection of the plurality of antenna patterns used by a base station is preferably adjusted from time to time, such as based upon environment, usage patterns, etcetera.

摘要翻译： 示出了利用天线方向图或天线波束扫描技术提供有效载荷通信的系统和方法。 提供基站无线电与多个站的无线通信链路，用于使用一系列天线方向图在基站和站之间进行有效载荷通信的通信。 天线图案被连续地扫描，例如随机，准随机，顺序地或根据时间表。 可以使用天线方向图调度器来实现天线方向图扫描和通话定时。 可以提供关于多个基站的协作调度。 优选地，基于环境，使用模式等来不时地调整基站使用的多个天线方向图的选择。

公开(公告)号：US20050032531A1

公开(公告)日：2005-02-10

申请号：US10635367

申请日：2003-08-06

申请人： Yi Gong ,  Hang Ching Leung ,  Mario Joa-Ng ,  Piu Wong ,  Soung Liew ,  Yan Wang

发明人： Yi Gong ,  Hang Ching Leung ,  Mario Joa-Ng ,  Piu Wong ,  Soung Liew ,  Yan Wang

IPC分类号： G01S19/25 ,  G01S3/28 ,  G01S5/02 ,  G01S5/04 ,  H04W16/24 ,  H04W64/00 ,  H04Q7/20 ,  G01S1/00

CPC分类号： H04W64/00 ,  G01S3/28 ,  G01S5/0252 ,  G01S5/04 ,  H04W16/24

摘要： Disclosed are systems and methods which provide for location positioning in wireless networks using techniques which are adapted to provide reliable location determinations even in complex topological environments. Embodiments utilize multiple antenna patterns, such as may be provided using phased array antennas, and implement location positioning techniques which do not require alteration of remote stations in providing location positioning. Various techniques for determining location may be implemented, including a channel model independent approach, a channel model based approach, or combinations thereof. A channel model independent approach used in providing location positioning may compare receive signal strength differences to an antenna gain difference table to determine an angle in the azimuth that a remote station is located. A channel model based approach used in providing location positioning may compare receive signal strength measurements to a database of signal strengths created using a wireless channel model.

摘要翻译： 公开了使用适于在复杂拓扑环境中提供可靠位置确定的技术来提供无线网络中的位置定位的系统和方法。 实施例利用多个天线方向图，例如可以使用相控阵天线来提供，并且实现位置定位技术，其不需要在提供位置定位时改变远程站。 可以实现用于确定位置的各种技术，包括信道模型独立方法，基于信道模型的方法或其组合。 用于提供位置定位的信道模型独立方法可以将接收信号强度差与天线增益差表进行比较，以确定远程站所在方位角的角度。 用于提供位置定位的基于信道模型的方法可将接收信号强度测量与使用无线信道模型创建的信号强度的数据库进行比较。

公开(公告)号：US20100027425A1

公开(公告)日：2010-02-04

申请号：US12182775

申请日：2008-07-30

申请人： C. F. Cheung ,  Piu B. Wong ,  Hang Ching Leung

发明人： C. F. Cheung ,  Piu B. Wong ,  Hang Ching Leung

IPC分类号： H04L12/24

CPC分类号： H04L47/10 ,  H04L47/326

摘要： Systems and methods which provide network congestion avoidance implementing a fairness scheme in which a cost function is used are shown. Transmission cost, for use in network congestion avoidance packet dropping decisions, may be determined from an amount of air time needed to transmit a data packet, a transmission data rate, a size of a packet, an amount of spectral energy or transmit power associated with transmission, etc. A packet dropping probability for a particular packet is preferably determined as a function of the current flow cost and average flow cost to provide fair allocation of network communications resources. Embodiments additionally implement buffer based packet dropping probability calculation in order to provide a robust network congestion avoidance technique. Cost based packet dropping probability calculation and buffer based packet dropping probability calculation implemented according to embodiments are adapted to accommodate quality of service applications.

摘要翻译： 示出提供网络拥塞避免的系统和方法，其实现使用成本函数的公平方案。 用于网络拥塞避免分组丢弃决定的传输成本可以从发送数据分组所需的空中时间量，传输数据速率，分组的大小，频谱能量或与...相关联的发射功率的量来确定 传输等。特定分组的分组丢弃概率优选地被确定为当前流量成本和平均流量成本的函数，以提供网络通信资源的公平分配。 实施例另外实现基于缓冲的分组丢弃概率计算，以便提供鲁棒的网络拥塞避免技术。 根据实施例实施的基于成本的分组丢弃概率计算和基于缓冲器的分组丢弃概率计算被适配以适应服务质量应用。