公开(公告)号：US07376398B2

公开(公告)日：2008-05-20

申请号：US11018794

申请日：2004-12-21

申请人： Vincent Roy ,  Paul Marinier ,  Arty Chandra ,  Inhyok Cha

发明人： Vincent Roy ,  Paul Marinier ,  Arty Chandra ,  Inhyok Cha

IPC分类号： H04B1/26

CPC分类号： H04B7/0408 ,  H04W16/28

摘要： A method for implementing a smart antenna in establishing association between a station (STA) and an access point (AP) in a wireless local area network begins by transmitting a beacon frame by the AP on one antenna beam. The beacon frame is received at the STA, which measures the signal quality of the beacon frame. The AP switches to a different antenna beam and repeats the method until the beacon frame has been transmitted on all antenna beams. The STA associates to the AP that transmits the beacon frame with the highest signal quality on one of its antenna beams. A similar method may be used in which the STA sends a probe request frame to the AP, which then responds with probe response frames sent on multiple antenna beams.

摘要翻译： 在无线局域网中建立站（STA）和接入点（AP）之间的关联的实现智能天线的方法是通过一个天线波束上的AP发送信标帧开始的。 在STA处接收信标帧，其测量信标帧的信号质量。 AP切换到不同的天线波束并重复该方法，直到在所有天线波束上发送信标帧为止。 STA将AP与其一个天线波束上发送具有最高信号质量的信标帧相关联。 可以使用类似的方法，其中STA向AP发送探测请求帧，该AP然后在多个天线波束上发送的探测响应帧进行响应。

公开(公告)号：US20060056345A1

公开(公告)日：2006-03-16

申请号：US11025018

申请日：2004-12-29

申请人： Paul Marinier ,  Vincent Roy ,  Arty Chandra ,  Inhyok Cha

发明人： Paul Marinier ,  Vincent Roy ,  Arty Chandra ,  Inhyok Cha

IPC分类号： H04Q7/00 ,  H04H1/00

CPC分类号： H04B7/0408 ,  H04W16/28

摘要： A method for supporting use of a smart antenna in a wireless local area network (WLAN) including an access point (AP) and a station (STA) begins by selecting an antenna beam by the AP to use for communication with the STA. The selected beam information is sent from the AP to the STA. A packet is transmitted from the STA to the AP, the packet including the selected beam information, whereby the AP uses the selected beam to receive at least a part of the packet.

摘要翻译： 一种用于支持在包括接入点（AP）和站（STA）的无线局域网（WLAN）中使用智能天线的方法开始于由AP选择用于与STA进行通信的天线波束。 所选波束信息从AP发送到STA。 分组从STA发送到AP，分组包括所选择的波束信息，由此AP使用所选择的波束来接收分组的至少一部分。

公开(公告)号：US20060056316A1

公开(公告)日：2006-03-16

申请号：US11066915

申请日：2005-02-25

申请人： Arty Chandra ,  Inhyok Cha ,  Paul Marinier ,  Vincent Roy

发明人： Arty Chandra ,  Inhyok Cha ,  Paul Marinier ,  Vincent Roy

IPC分类号： H04L12/28 ,  H04Q7/00

CPC分类号： H04W24/02 ,  H04B7/0628 ,  H04B7/0689 ,  H04W28/18 ,  H04W84/12

摘要： A system for exchanging smart antenna capability information between a transmitting station (STA) and a receiving STA in a wireless communication system includes an antenna capability information element (IE) that includes information regarding the capability of the transmitting STA. The antenna capability IE is sent from the transmitting STA to the receiving STA prior to data transmission between the transmitting STA and the receiving STA. When used in a wireless local area network, the antenna capability IE can be sent as part of a management frame, control frame, or data frame.

公开(公告)号：US08675617B2

公开(公告)日：2014-03-18

申请号：US11753115

申请日：2007-05-24

申请人： Inhyok Cha ,  Keith Baldwin ,  Yingxue Li

发明人： Inhyok Cha ,  Keith Baldwin ,  Yingxue Li

IPC分类号： H04W4/00

CPC分类号： H01Q3/2611 ,  H04L1/1887 ,  H04W84/12 ,  H04W88/02

摘要： A client station in a wireless local area network (WLAN) communication system includes a beam commutation algorithm and a smart antenna responsive to the beam commutation algorithm for selecting one of a plurality of directional antenna beams. The smart antenna is configured as a virtual omni-directional antenna by using a commutation of switched directional antenna beams. A switched directional antenna system that performs a commutation sequencing can be blind to environmental conditions and changes.

摘要翻译： 无线局域网（WLAN）通信系统中的客户站包括波束换向算法和响应于波束换向算法的智能天线，用于选择多个定向天线波束中的一个。 通过使用切换的定向天线波束的换向将智能天线配置为虚拟全向天线。 执行换向排序的开关定向天线系统可能对环境条件和变化无视。

公开(公告)号：US20080002627A1

公开(公告)日：2008-01-03

申请号：US11753115

申请日：2007-05-24

申请人： Inhyok Cha ,  Keith Baldwin ,  Yingxue Li

发明人： Inhyok Cha ,  Keith Baldwin ,  Yingxue Li

IPC分类号： H04Q7/00

CPC分类号： H01Q3/2611 ,  H04L1/1887 ,  H04W84/12 ,  H04W88/02

摘要： A client station in a wireless local area network (WLAN) communication system includes a beam commutation algorithm and a smart antenna responsive to the beam commutation algorithm for selecting one of a plurality of directional antenna beams. The smart antenna is configured as a virtual omni-directional antenna by using a commutation of switched directional antenna beams. A switched directional antenna system that performs a commutation sequencing can be blind to environmental conditions and changes.

摘要翻译： 无线局域网（WLAN）通信系统中的客户站包括波束换向算法和响应于波束换向算法的智能天线，用于选择多个定向天线波束中的一个。 通过使用切换的定向天线波束的换向将智能天线配置为虚拟全向天线。 执行换向排序的开关定向天线系统可能对环境条件和变化无视。

公开(公告)号：US20060079220A1

公开(公告)日：2006-04-13

申请号：US11228816

申请日：2005-09-16

申请人： Inhyok Cha ,  Yingxue Li

发明人： Inhyok Cha ,  Yingxue Li

IPC分类号： H04Q7/20

CPC分类号： H04W16/28 ,  H04B7/0695 ,  H04B7/082 ,  H04W76/10 ,  H04W84/12

摘要： A communications device with a switched beam antenna operates in a wireless local area network (WLAN) that includes a plurality of transmitters. The switched beam antenna generates a plurality of antenna beams. A method for operating the communications device includes receiving signals from the plurality of transmitters operating within the WLAN, identifying the received signals comprising medium access control (MAC) information, and determining a quality metric for each received signal comprising MAC information. A transmitter is selected based on the quality metrics. The antenna beams are scanned for receiving from the selected transmitter the signals comprising MAC information. A quality metric associated with each scanned antenna beam is determined. One of the scanned antenna beams is then selected for communicating with the selected transmitter based on the quality metrics.

摘要翻译： 具有切换波束天线的通信设备在包括多个发射机的无线局域网（WLAN）中工作。 切换波束天线产生多个天线波束。 用于操作通信设备的方法包括从在WLAN内操作的多个发射机接收信号，识别包括媒体接入控制（MAC）信息的接收信号，以及确定包括MAC信息的每个接收信号的质量度量。 基于质量度量来选择发射机。 扫描天线波束以从所选发射机接收包括MAC信息的信号。 确定与每个扫描天线波束相关联的质量度量。 然后选择扫描的天线波束之一用于基于质量度量与所选择的发射机进行通信。

公开(公告)号：US20060264184A1

公开(公告)日：2006-11-23

申请号：US11352631

申请日：2006-02-13

申请人： Yingxue Li ,  Inhyok Cha ,  Jungwoo Lee

发明人： Yingxue Li ,  Inhyok Cha ,  Jungwoo Lee

IPC分类号： H04B1/02 ,  H04M1/00 ,  H04B7/02

CPC分类号： H04B7/088 ,  H01Q3/24 ,  H04B7/0695 ,  H04B7/0697 ,  H04B17/309 ,  H04B17/318 ,  H04B17/336 ,  H04B17/382

摘要： A method and apparatus for selecting a beam combination of multiple-input multiple-output (MIMO) antennas are disclosed. A wireless transmit/receive unit (WTRUs) includes a plurality of antennas to generate a plurality of beams for supporting MIMO. At least one antenna is configured to generate multiple beams, such that various beam combinations can be produced and a desired beam combination selected for conducting wireless communication with another WTRU. A quality metric is measured with respect to each or subset of the possible beam combinations. A desired beam combination for MIMO transmission and reception is selected based on the quality metric measurements.

摘要翻译： 公开了一种用于选择多输入多输出（MIMO）天线的波束组合的方法和装置。 无线发射/接收单元（WTRU）包括多个天线以产生用于支持MIMO的多个波束。 至少一个天线被配置为产生多个波束，使得可以产生各种波束组合，并且选择用于与另一个WTRU进行无线通信的期望波束组合。 相对于可能的波束组合的每个或子集来测量质量度量。 基于质量度量测量来选择用于MIMO传输和接收的期望的波束组合。

公开(公告)号：US20060073850A1

公开(公告)日：2006-04-06

申请号：US11024290

申请日：2004-12-28

申请人： Inhyok Cha ,  Ross Lintelman ,  Yingxue Li

发明人： Inhyok Cha ,  Ross Lintelman ,  Yingxue Li

IPC分类号： H04M1/00

CPC分类号： H04B7/0608 ,  H04W16/28 ,  H04W84/12

摘要： A method for steering a smart antenna in a wireless communication system begins by selecting a beam steering criterion. The antenna is switched to one of a plurality of measurement positions and link quality metrics are measured at each measurement position. The steering criterion are optimized based on the measured metrics, and the antenna is steered to the position providing the optimized metrics.

摘要翻译： 用于在无线通信系统中指导智能天线的方法通过选择波束转向标准开始。 天线切换到多个测量位置之一，并且在每个测量位置测量链路质量度量。 转向标准基于测量的度量进行优化，天线被引导到提供优化度量的位置。

公开(公告)号：US07428408B2

公开(公告)日：2008-09-23

申请号：US11228816

申请日：2005-09-16

申请人： Inhyok Cha ,  Yingxue Li

发明人： Inhyok Cha ,  Yingxue Li

IPC分类号： H04B1/06

CPC分类号： H04W16/28 ,  H04B7/0695 ,  H04B7/082 ,  H04W76/10 ,  H04W84/12

摘要： A communications device with a switched beam antenna operates in a wireless local area network (WLAN) that includes a plurality of transmitters. The switched beam antenna generates a plurality of antenna beams. A method for operating the communications device includes receiving signals from the plurality of transmitters operating within the WLAN, identifying the received signals comprising medium access control (MAC) information, and determining a quality metric for each received signal comprising MAC information. A transmitter is selected based on the quality metrics. The antenna beams are scanned for receiving from the selected transmitter the signals comprising MAC information. A quality metric associated with each scanned antenna beam is determined. One of the scanned antenna beams is then selected for communicating with the selected transmitter based on the quality metrics.

摘要翻译： 具有切换波束天线的通信设备在包括多个发射机的无线局域网（WLAN）中工作。 切换波束天线产生多个天线波束。 用于操作通信设备的方法包括从在WLAN内操作的多个发射机接收信号，识别包括媒体接入控制（MAC）信息的接收信号，以及确定包括MAC信息的每个接收信号的质量度量。 基于质量度量来选择发射机。 扫描天线波束以从所选择的发射机接收包括MAC信息的信号。 确定与每个扫描天线波束相关联的质量度量。 然后选择扫描的天线波束之一用于基于质量度量与所选择的发射机进行通信。

公开(公告)号：US07944890B2

公开(公告)日：2011-05-17

申请号：US11419836

申请日：2006-05-23

申请人： John S. Chen ,  Inhyok Cha ,  Richard Simeon ,  Daniel P. Steinbach

发明人： John S. Chen ,  Inhyok Cha ,  Richard Simeon ,  Daniel P. Steinbach

IPC分类号： H01Q1/24

CPC分类号： H01Q1/2258 ,  H01Q25/00

摘要： A communications device operates in a wireless local area network (WLAN), and includes a processor operating in accordance with an operating system that includes a standardized set of object identifiers (OIDs) associated therewith. An antenna steering algorithm is executed by the processor for generating a driver query. A driver generates an antenna query in response to the driver query. A smart antenna is driven by the driver and generates antenna beams for receiving signals, and generates metrics based upon the received signals. The smart antenna provides to the driver a metric associated with the antenna query. The driver associates the metric received from the smart antenna with one of the object identifiers from the standardized set of object identifiers, and provides the same to the antenna steering algorithm.

摘要翻译： 通信设备在无线局域网（WLAN）中操作，并且包括根据包括与其相关联的标准对象标识符集合（OID）的操作系统操作的处理器。 由处理器执行天线转向算法以产生驾驶员查询。 驾驶员响应于驾驶员查询产生天线查询。 智能天线由驱动器驱动并产生用于接收信号的天线波束，并且基于接收的信号产生度量。 智能天线向驾驶员提供与天线查询相关联的度量。 驱动器将从智能天线接收的度量与来自标准化的对象标识符集合的对象标识符之一相关联，并将其提供给天线导向算法。