公开(公告)号：US08265702B2

公开(公告)日：2012-09-11

申请号：US13236348

申请日：2011-09-19

申请人： Ana Lucia Iacono ,  Arty Chandra ,  Zheng Zhao

发明人： Ana Lucia Iacono ,  Arty Chandra ,  Zheng Zhao

IPC分类号： H04M1/00 ,  H04W40/00 ,  H04W4/00

CPC分类号： H04W16/28

摘要： A access point (AP) during wireless communication with at least one wireless transmit/receive unit (WTRU), transmits a beacon signal periodically among a plurality of sectors, each sector having its own sector identity, the beacon signal being periodically received at least once in a beacon period and the beacon period comprising a plurality of beacon service periods for all sectors. The AP determines a scheduling value to indicate a number of inactive beacon periods for a first sector to at least one WTRU located in the first sector. The scheduling value is transmitted with the sector identity for the first sector, such that a variable beacon period is established for the first sector, enabling the at least one WTRU located in the first sector to enter a sleep mode for an adjustable period of time.

摘要翻译： 在与至少一个无线发射/接收单元（WTRU）的无线通信期间的接入点（AP）在多个扇区之间周期性地发送信标信号，每个扇区具有其自己的扇区标识，所述信标信号周期性地接收至少一次 在信标周期中，信标周期包括用于所有扇区的多个信标服务周期。 AP确定调度值以指示第一扇区到位于第一扇区中的至少一个WTRU的无效信标周期的数量。 调度值与第一扇区的扇区标识一起发送，使得为第一扇区建立可变信标周期，使得位于第一扇区中的至少一个WTRU能够进入可调整时间段的睡眠模式。

公开(公告)号：US20110211474A1

公开(公告)日：2011-09-01

申请号：US13071600

申请日：2011-03-25

申请人： Chang-Soo Koo ,  Arty Chandra ,  Peter J. Voltz ,  Chia-Pang Yen ,  Jin Wang ,  Robert Lind Olesen

发明人： Chang-Soo Koo ,  Arty Chandra ,  Peter J. Voltz ,  Chia-Pang Yen ,  Jin Wang ,  Robert Lind Olesen

IPC分类号： H04L12/26

CPC分类号： H04L25/03343 ,  H04B7/0408 ,  H04B7/0626 ,  H04B7/0643 ,  H04B17/0085 ,  H04B17/21 ,  H04B17/24 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0398 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03611 ,  H04L2025/03802

摘要： A method and apparatus for calibration and channel state feedback to support transmit beamforming in a multiple-input multiple-output (MIMO) system are disclosed. For radio frequency (RF) calibration, a first station (STA) sends a calibration request to a second STA, and the second STA sends a sounding packet to the first STA. The first STA receives the sounding packet, performs at least one channel measurement and performs calibration based on the channel measurement. For channel state feedback, the first STA sends a channel state feedback request to the second STA. The second STA sends a sounding packet to the first STA. The first STA receives the sounding packet and performs at least one channel measurement with the sounding packet. The first STA then calculates a steering matrix for transmit beamforming based on the channel measurement.

摘要翻译： 公开了一种用于校准和信道状态反馈以支持多输入多输出（MIMO）系统中的发射波束成形的方法和装置。 对于射频（RF）校准，第一站（STA）向第二STA发送校准请求，并且第二STA向第一STA发送探测分组。 第一STA接收探测包，执行至少一个信道测量，并根据信道测量进行校准。 对于信道状态反馈，第一STA向第二STA发送信道状态反馈请求。 第二STA向第一STA发送一个探测包。 第一STA接收探测分组，并用声音分组进行至少一个信道测量。 然后，第一STA基于信道测量来计算用于发射波束形成的导引矩阵。

公开(公告)号：US07920533B2

公开(公告)日：2011-04-05

申请号：US11680694

申请日：2007-03-01

申请人： Chang-Soo Koo ,  Jin Wang ,  Robert Lind Olesen ,  Arty Chandra ,  Peter J. Voltz ,  Chia-Pang Yen

发明人： Chang-Soo Koo ,  Jin Wang ,  Robert Lind Olesen ,  Arty Chandra ,  Peter J. Voltz ,  Chia-Pang Yen

IPC分类号： H04W4/00 ,  H04B7/00 ,  H04B17/00 ,  H04B1/00

CPC分类号： H04L25/03343 ,  H04B7/0408 ,  H04B7/0626 ,  H04B7/0643 ,  H04B17/0085 ,  H04B17/21 ,  H04B17/24 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0398 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03611 ,  H04L2025/03802

摘要： A method and apparatus for calibration and channel state feedback to support transmit beamforming in a multiple-input multiple-output (MIMO) system are disclosed. For radio frequency (RF) calibration, a first station (STA) sends a calibration request to a second STA, and the second STA sends a sounding packet to the first STA. The first STA receives the sounding packet, performs at least one channel measurement and performs calibration based on the channel measurement. For channel state feedback, the first STA sends a channel state feedback request to the second STA. The second STA sends a sounding packet to the first STA. The first STA receives the sounding packet and performs at least one channel measurement with the sounding packet. The first STA then calculates a steering matrix for transmit beamforming based on the channel measurement.

摘要翻译： 公开了一种用于校准和信道状态反馈以支持多输入多输出（MIMO）系统中的发射波束成形的方法和装置。 对于射频（RF）校准，第一站（STA）向第二STA发送校准请求，并且第二STA向第一STA发送探测分组。 第一STA接收探测包，执行至少一个信道测量，并根据信道测量进行校准。 对于信道状态反馈，第一STA向第二STA发送信道状态反馈请求。 第二STA向第一STA发送一个探测包。 第一STA接收探测分组，并用声音分组进行至少一个信道测量。 然后，第一STA基于信道测量来计算用于发射波束形成的导引矩阵。

公开(公告)号：US20100330914A1

公开(公告)日：2010-12-30

申请号：US12880583

申请日：2010-09-13

申请人： Arty Chandra

发明人： Arty Chandra

IPC分类号： H04B17/00

CPC分类号： H04W72/0453 ,  H04L5/0048 ,  H04W48/08 ,  H04W48/12 ,  H04W48/20 ,  H04W88/06 ,  H04W88/08 ,  H04W88/10 ,  Y02D70/142 ,  Y02D70/22

摘要： A method and apparatus for selecting one of a plurality of multi-band access points (APs) to associate with a multi-band wireless transmit/receive unit (WTRU) are disclosed. The multi-band APs broadcast frequency band information regarding multiple frequency bands on which the multi-band AP is configured to operate. The multi-band WTRU selects a particular multi-band AP to associate with and a frequency band to use to communicate with the selected multi-band AP based on the frequency band information. If the multi-band WTRU receives frequency band information from the selected multi-band AP which indicates that a characteristic, (e.g., throughput, path loss, load, capacity, backhaul), of the selected frequency band is unacceptable, the multi-band WTRU determines whether to disassociate with the selected multi-band AP or to continue to associate with the selected multi-band AP via a different frequency band.

摘要翻译： 公开了一种用于选择与多频带无线发射/接收单元（WTRU）相关联的多个多频带接入点（AP）中的一个的方法和装置。 多频带AP广播关于多频带AP被配置为操作的多个频带的频带信息。 多频带WTRU基于频带信息，选择特定的多频带AP和用于与所选择的多频带AP进行通信的频带。 如果多频带WTRU从所选择的多频带AP接收到频带信息，其指示所选频带的特性（例如，吞吐量，路径损耗，负载，容量，回程）是不可接受的，则该多频带 WTRU确定是否与所选择的多频带AP分离，或者通过不同的频带继续与所选择的多频带AP相关联。

公开(公告)号：US20100251058A1

公开(公告)日：2010-09-30

申请号：US12797917

申请日：2010-06-10

申请人： Arty Chandra ,  Narayan Parappil Menon ,  Stephen E. Terry ,  Junsung Lim

发明人： Arty Chandra ,  Narayan Parappil Menon ,  Stephen E. Terry ,  Junsung Lim

IPC分类号： H03M13/00 ,  G06F11/00

CPC分类号： H04W24/02 ,  H04L1/1812 ,  H04L1/1838 ,  H04L1/1841 ,  H04L1/1848 ,  H04L1/188

摘要： A method for transmitting a packet from a transmitter to a receiver in a wireless communication system begins by building a packet by a transport format combination (TFC) selection process, and the packet is transmitted from the transmitter to the receiver. If the transmitter receives an indication that the packet was not successfully received at the receiver, the packet is retransmitted via a hybrid automatic repeat request (HARQ) procedure. If the HARQ procedure did not successfully transmit the packet, then the packet is retransmitted via a retransmission management (RM) procedure. If the RM procedure did not successfully transmit the packet, then the packet is discarded by the transmitter.

摘要翻译： 一种在无线通信系统中从发射机向接收机发送分组的方法是通过以传输格式组合（TFC）选择过程建立分组开始的，分组从发射机发射到接收机。 如果发射机接收到在接收机未成功接收到分组的指示，则通过混合自动重传请求（HARQ）过程来重传分组。 如果HARQ过程没有成功发送该分组，则通过重传管理（RM）过程来重传该分组。 如果RM程序没有成功发送数据包，则该数据包被发送器丢弃。

公开(公告)号：US20090109887A1

公开(公告)日：2009-04-30

申请号：US12346337

申请日：2008-12-30

申请人： Arty Chandra ,  Eldad Zeira

发明人： Arty Chandra ,  Eldad Zeira

IPC分类号： G08C17/00

CPC分类号： H04W52/0229 ,  Y02D70/142

摘要： Method and system for reducing battery consumption during an active session wherein an access point (AP) transmits a wireless transmit/receive unit (WTRU) a packet information regarding packets in a queue waiting for transmission to the WTRU and when the packets are to be decoded, whereby enabling the WTRU to enter or remain in an OFF mode in accordance with the packet information. The AP does not send the packets to the WTRU until the AP informs the WTRU about the packet.

摘要翻译： 用于在活动会话期间减少电池消耗的方法和系统，其中接入点（AP）向无线发射/接收单元（WTRU）发送关于等待传输到WTRU的队列中的分组的分组信息，以及当分组被解码时 ，由此使得WTRU能够根据分组信息进入或保持在OFF模式。 直到AP通知WTRU关于该分组为止，AP才将该分组发送到WTRU。

公开(公告)号：US20080209297A1

公开(公告)日：2008-08-28

申请号：US11531478

申请日：2006-09-13

申请人： Arty Chandra ,  Narayan Parappil Menon ,  Stephen E. Terry ,  Junsung Lim

发明人： Arty Chandra ,  Narayan Parappil Menon ,  Stephen E. Terry ,  Junsung Lim

IPC分类号： H04L1/08 ,  G06F11/14 ,  H04B7/00

CPC分类号： H04W24/02 ,  H04L1/1812 ,  H04L1/1838 ,  H04L1/1841 ,  H04L1/1848 ,  H04L1/188

摘要： A method for transmitting a packet from a transmitter to a receiver in a wireless communication system begins by building a packet by a transport format combination (TFC) selection process, and the packet is transmitted from the transmitter to the receiver. If the transmitter receives an indication that the packet was not successfully received at the receiver, the packet is retransmitted via a hybrid automatic repeat request (HARQ) procedure. If the HARQ procedure did not successfully transmit the packet, then the packet is retransmitted via a retransmission management (RM) procedure. If the RM procedure did not successfully transmit the packet, then the packet is discarded by the transmitter.

摘要翻译： 一种在无线通信系统中从发射机向接收机发送分组的方法是通过以传输格式组合（TFC）选择过程建立分组开始的，分组从发射机发射到接收机。 如果发射机接收到在接收机未成功接收到分组的指示，则通过混合自动重传请求（HARQ）过程来重传分组。 如果HARQ过程没有成功发送该分组，则通过重传管理（RM）过程来重传该分组。 如果RM程序没有成功发送数据包，则该数据包被发送器丢弃。

公开(公告)号：US07366464B2

公开(公告)日：2008-04-29

申请号：US11144113

申请日：2005-06-03

申请人： Ana Lucia Iacono ,  Arty Chandra ,  Daniel P. Steinbach ,  Inhyok Cha ,  James C. Otto ,  Kevin P. Johnson ,  Stanley Gutowski ,  Kai Liu ,  Angelo Cuffaro ,  Janet Stern-Berkowitz

发明人： Ana Lucia Iacono ,  Arty Chandra ,  Daniel P. Steinbach ,  Inhyok Cha ,  James C. Otto ,  Kevin P. Johnson ,  Stanley Gutowski ,  Kai Liu ,  Angelo Cuffaro ,  Janet Stern-Berkowitz

IPC分类号： H04B7/14

CPC分类号： H04W16/24 ,  H04B7/0695 ,  H04B7/088

摘要： An access point operates in an 802.11 wireless communication network communicating with a client station, and includes a smart antenna for generating directional antenna beams and an omni-directional antenna beam. An antenna steering algorithm scans the directional antenna beams and the omni-directional antenna beam for receiving signals from the client station. The signals received via each scanned antenna beam are measured, and one of the antenna beams is selected based upon the measuring for communicating with the client station. The selected antenna beam is preferably a directional antenna beam. Once the directional antenna beam has been selected, there are several usage rules for exchanging data with the client station. The usage rules are directed to an active state of the access point, which includes a data transmission mode and a data reception mode.

摘要翻译： 接入点在与客户站通信的802.11无线通信网络中操作，并且包括用于生成定向天线波束的智能天线和全向天线波束。 天线导向算法扫描定向天线波束和全向天线波束，用于从客户端接收信号。 测量经由每个扫描天线波束接收到的信号，并且基于与客户站进行通信的测量来选择天线波束之一。 所选择的天线波束优选地是定向天线波束。 一旦选择了定向天线波束，就有几种与客户端交换数据的使用规则。 使用规则被引导到接入点的活动状态，其包括数据传输模式和数据接收模式。

公开(公告)号：US20080045228A1

公开(公告)日：2008-02-21

申请号：US11840755

申请日：2007-08-17

申请人： Guodong Zhang ,  Christopher Cave ,  Guang Lu ,  Paul Marinier ,  Arty Chandra ,  Sudheer Grandhi

发明人： Guodong Zhang ,  Christopher Cave ,  Guang Lu ,  Paul Marinier ,  Arty Chandra ,  Sudheer Grandhi

IPC分类号： H04Q7/20

CPC分类号： H04W72/0406 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/1607 ,  H04L1/1854 ,  H04L1/1861 ,  H04L12/189 ,  H04L2001/0093 ,  H04W72/005 ,  H04W74/0866

摘要： The present invention is related to a method and system for sending and reducing uplink feedback signaling by a wireless transmit/receive unit (WTRU) related to transmission of multimedia broadcast multicast service (MBMS) data over a high speed downlink packet access (HSDPA) channel. A Node B may pre-allocate a time/frequency region or a common channelization code for the feedback. A triggering criterion for reporting a channel quality indicator (CQI) is set and WTRUs send a CQI to a Node B only if the triggering criterion is satisfied. The triggering criterion may be a current operating CQI value at the Node B, or based on erroneous transport block reception statistics, or a predetermined time period. A feedback reduction method related to ACK/NACK includes the WTRU sending an indication of an average number of transmissions needed to successfully decode the data instead of sending an ACK/NACK for every transmission interval.

摘要翻译： 本发明涉及一种用于通过高速下行链路分组接入（HSDPA）信道传输多媒体广播多播服务（MBMS）数据的无线发射/接收单元（WTRU）发送和减少上行链路反馈信令的方法和系统。 。 节点B可以预先分配用于反馈的时间/频率区域或公共信道化码。 设置用于报告信道质量指示符（CQI）的触发标准，并且仅当满足触发标准时，WTRU才向节点B发送CQI。 触发标准可以是节点B处的当前操作CQI值，或者基于错误的传输块接收统计信息或预定时间段。 与ACK / NACK相关的反馈减少方法包括WTRU发送成功解码数据所需的平均传输数量的指示，而不是为每个传输间隔发送ACK / NACK。

公开(公告)号：US20070189205A1

公开(公告)日：2007-08-16

申请号：US11669269

申请日：2007-01-31

申请人： Stephen Terry ,  Jin Wang ,  Arty Chandra ,  John Chen ,  Guodong Zhang

发明人： Stephen Terry ,  Jin Wang ,  Arty Chandra ,  John Chen ,  Guodong Zhang

IPC分类号： H04Q7/00

CPC分类号： H04W72/0413 ,  H04B7/2621 ,  H04L1/1812 ,  H04L5/0037 ,  H04W56/0045 ,  H04W72/1278 ,  H04W74/04

摘要： In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WRTUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.

摘要翻译： 在包括至少一个演进的节点B（eNB）和多个无线发射/接收单元（WRTU）的无线通信系统中，建立，维护和利用基于非竞争的（NCB）信道。 NCB信道被分配供在系统中的一个或多个WTRU使用以用于各种功能，并且该分配被传送到WTRU。 无线通信系统根据需要分析NCB信道的分配，根据需要重新分配NCB信道。