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：US07917092B2

公开(公告)日：2011-03-29

申请号：US11302299

申请日：2005-12-13

申请人： Ana Lucia Iacono ,  Arty Chandra ,  Inhyok Cha ,  John S. Chen ,  Yingxue Li ,  James C. Otto

发明人： Ana Lucia Iacono ,  Arty Chandra ,  Inhyok Cha ,  John S. Chen ,  Yingxue Li ,  James C. Otto

IPC分类号： H04B1/00 ,  H04B15/00 ,  H04B17/00 ,  H04M1/00 ,  H04W4/00

CPC分类号： H04B7/0608 ,  H04W16/28 ,  H04W72/046

摘要： An apparatus and a method for improving packet transmission and reducing latency in VoIP over WLAN using switched beam antennas having multiple directional antenna beams are disclosed. In an access point having a switched beam antenna, or other smart antenna system, the present invention extends the coverage area of an access point for authentication and association of a new WTRU, extends the access points coverage area during in session transmissions with a WTRU, and adjusts data rates. The method also controls Contention Period (CP)/Contention Free Period (CFP) timing amongst beams emanating from an access point having a switched beam antenna, or other smart antenna system. Fast diversity switching, frame level switching, lowered data rates, and scanning multiple directional antenna beams for the optimum transmission beam are disclosed to improve beam selection and packet transmission.

摘要翻译： 公开了一种使用具有多个定向天线波束的切换波束天线来改善分组传输并减少VoIP中的VoIP延迟的装置和方法。 在具有切换波束天线或其它智能天线系统的接入点中，本发明扩展用于新WTRU的认证和关联的接入点的覆盖区域，在与WTRU的会话传输期间扩展接入点覆盖区域， 并调整数据速率。 该方法还控制从具有切换波束天线或其他智能天线系统的接入点发出的波束之间的竞争周期（CP）/无竞争周期（CFP）定时。 公开了快速分集切换，帧级切换，降低数据速率和扫描用于最佳传输波束的多方向天线波束，以改善波束选择和分组传输。

公开(公告)号：US20060203789A1

公开(公告)日：2006-09-14

申请号：US11302299

申请日：2005-12-13

申请人： Ana Iacono ,  Arty Chandra ,  Inhyok Cha ,  John Chen ,  Yingxue Li ,  James Otto

发明人： Ana Iacono ,  Arty Chandra ,  Inhyok Cha ,  John Chen ,  Yingxue Li ,  James Otto

IPC分类号： H04Q7/24 ,  H04L12/66

CPC分类号： H04B7/0608 ,  H04W16/28 ,  H04W72/046

摘要： An apparatus and a method for improving packet transmission and reducing latency in VoIP over WLAN using switched beam antennas having multiple directional antenna beams are disclosed. In an access point having a switched beam antenna, or other smart antenna system, the present invention extends the coverage area of an access point for authentication and association of a new WTRU, extends the access points coverage area during in session transmissions with a WTRU, and adjusts data rates. The method also controls Contention Period (CP)/Contention Free Period (CFP) timing amongst beams emanating from an access point having a switched beam antenna, or other smart antenna system. Fast diversity switching, frame level switching, lowered data rates, and scanning multiple directional antenna beams for the optimum transmission beam are disclosed to improve beam selection and packet transmission.

摘要翻译： 公开了一种使用具有多个定向天线波束的切换波束天线来改善分组传输并减少VoIP中的VoIP延迟的装置和方法。 在具有切换波束天线或其它智能天线系统的接入点中，本发明扩展用于新WTRU的认证和关联的接入点的覆盖区域，在与WTRU的会话传输期间扩展接入点覆盖区域， 并调整数据速率。 该方法还控制从具有切换波束天线或其他智能天线系统的接入点发出的波束之间的竞争周期（CP）/无竞争周期（CFP）定时。 公开了快速分集切换，帧级切换，降低数据速率和扫描用于最佳传输波束的多方向天线波束，以改善波束选择和分组传输。

公开(公告)号：US07697626B2

公开(公告)日：2010-04-13

申请号：US11377152

申请日：2006-03-16

申请人： Jin Wang ,  Arty Chandra ,  Inhyok Cha ,  Yingxue Li

发明人： Jin Wang ,  Arty Chandra ,  Inhyok Cha ,  Yingxue Li

IPC分类号： H04L1/02

CPC分类号： H04B7/0695 ,  H04B7/088 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025

摘要： A method and apparatus for selecting a beam combination of beam switched antennas in a multiple-input multiple-output (MIMO) wireless communication system including a first node and a second node. The first node sends a plurality of modulation and coding scheme (MCS) requests to the second node. Each of the plurality of MCS requests is sent using a particular beam combination. The second node receives the MCS requests and generates MCS feedback signals for each of the MCS requests. Each MCS feedback signal includes an MCS recommendation for the particular beam. The first node selects a beam combination for communicating with the second node based on the MCS recommendations.

摘要翻译： 一种用于在包括第一节点和第二节点的多输入多输出（MIMO）无线通信系统中选择波束切换天线的波束组合的方法和装置。 第一节点向第二节点发送多个调制和编码方案（MCS）请求。 使用特定的波束组合发送多个MCS请求中的每一个。 第二节点接收MCS请求，并为每个MCS请求生成MCS反馈信号。 每个MCS反馈信号包括针对特定波束的MCS推荐。 第一节点基于MCS建议选择用于与第二节点进行通信的波束组合。

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：US20070165736A1

公开(公告)日：2007-07-19

申请号：US11377152

申请日：2006-03-16

申请人： Jin Wang ,  Arty Chandra ,  Inhyok Cha ,  Yingxue Li

发明人： Jin Wang ,  Arty Chandra ,  Inhyok Cha ,  Yingxue Li

IPC分类号： H04L1/02

CPC分类号： H04B7/0695 ,  H04B7/088 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025

摘要： A method and apparatus for selecting a beam combination of beam switched antennas in a multiple-input multiple-output (MIMO) wireless communication system including a first node and a second node. The first node sends a plurality of modulation and coding scheme (MCS) requests to the second node. Each of the plurality of MCS requests is sent using a particular beam combination. The second node receives the MCS requests and generates MCS feedback signals for each of the MCS requests. Each MCS feedback signal includes an MCS recommendation for the particular beam. The first node selects a beam combination for communicating with the second node based on the MCS recommendations.

摘要翻译： 一种用于在包括第一节点和第二节点的多输入多输出（MIMO）无线通信系统中选择波束切换天线的波束组合的方法和装置。 第一节点向第二节点发送多个调制和编码方案（MCS）请求。 使用特定的波束组合发送多个MCS请求中的每一个。 第二节点接收MCS请求，并为每个MCS请求生成MCS反馈信号。 每个MCS反馈信号包括针对特定波束的MCS推荐。 第一节点基于MCS建议选择用于与第二节点进行通信的波束组合。