公开(公告)号：US08463282B2

公开(公告)日：2013-06-11

申请号：US10728035

申请日：2003-12-03

申请人： Rashid A. Attar ,  Bibhu P. Mohanty ,  Jack M. Holtzman ,  Jelena Damnjanovic

发明人： Rashid A. Attar ,  Bibhu P. Mohanty ,  Jack M. Holtzman ,  Jelena Damnjanovic

IPC分类号： H04W72/00 ,  H04B7/00

CPC分类号： H04W24/08 ,  H04W28/02 ,  H04W88/08

摘要： A method and apparatus for overload detection and control is disclosed. A base station may be in communication with one or more subscriber stations. Overload may be detected as a function of a plurality of parameters, each of which places a load on the base station. Both the type and degree of overload may be ascertained. Appropriate remedial measures may be implemented that are suitable to the type and degree of overload detected.

摘要翻译： 公开了一种用于过载检测和控制的方法和装置。 基站可以与一个或多个用户站进行通信。 可以根据多个参数检测过载，每个参数在基站上施加负载。 可以确定过载的类型和程度。 可以采取适当的补救措施，适用于检测到的过载类型和程度。

公开(公告)号：US08854944B2

公开(公告)日：2014-10-07

申请号：US12614436

申请日：2009-11-08

申请人： Yu-Cheun Jou ,  Rashid A. Attar ,  Peter J. Black

发明人： Yu-Cheun Jou ,  Rashid A. Attar ,  Peter J. Black

IPC分类号： H04B1/10 ,  H04B1/7107

CPC分类号： H04B1/7107 ,  H04B1/10

摘要： Disclosed are methods and apparatus for interference cancellation in a wireless communication system. In particular, the disclosed methods and apparatus provide for interference cancellation in a wireless device, including extending linear interference cancellation techniques, such as quasi-linear interference cancellation (QLIC), in the wireless device to a first orthogonal set, which may be a first quasi orthogonal function (QOF) set for a cdma2000 system to cancel interference from that set upon another desired QOF set. QLIC may also be extended to cancellation of signals from non-intended base stations as well. Accordingly, the present methods and apparatus afford reduced interference through QLIC by canceling signals due to either undesired QOF sets or non-intended base stations, which in turn results in an increase in forward link capacity.

摘要翻译： 公开了一种用于无线通信系统中的干扰消除的方法和装置。 具体地，所公开的方法和装置提供无线设备中的干扰消除，包括将无线设备中的线性干扰消除技术（诸如准线性干扰消除（QLIC））扩展到第一正交集合，其可以是第一正交集合 为cdma2000系统设置的准正交函数（QOF），以消除来自该组的另一个所需QOF集的干扰。 也可以将QLIC扩展到从非预定基站消除信号。 因此，本方法和装置通过消除由于不期望的QOF组或非预期基站导致的信号，通过QLIC降低了干扰，这又导致前向链路容量的增加。

公开(公告)号：US08761713B2

公开(公告)日：2014-06-24

申请号：US12023857

申请日：2008-01-31

申请人： Ramin Rezaiifar ,  Rashid A. Attar

发明人： Ramin Rezaiifar ,  Rashid A. Attar

IPC分类号： H04M11/04

CPC分类号： H04W76/50 ,  H04W4/06 ,  H04W4/90 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/25

摘要： Methods, apparatus and media for receiving emergency broadcast information in a broadcast-multicast service of a communication system. The methods, apparatus and media include scheduling a broadcast of emergency broadcast information in designated control channel cycles for designated subscriber stations. The control channel cycles are transmitted with the designated control channel cycles including the emergency broadcast information. Subscriber stations awake according to their designated control channel cycle and receive the transmission of their designated control channel cycle on a broadcast-multicast service. The subscriber station determines if emergency broadcast information is in the control channel cycle assigned to the subscriber station and responds accordingly.

摘要翻译： 用于在通信系统的广播多播服务中接收紧急广播信息的方法，装置和媒体。 方法，装置和媒体包括在指定的用户台的指定的控制信道周期中调度紧急广播信息的广播。 通过包括紧急广播信息的指定控制信道周期来发送控制信道周期。 用户站根据其指定的控制信道周期进行唤醒，并在广播组播业务上接收其指定的控制信道周期的传输。 用户站确定紧急广播信息是否处于分配给用户站的控制信道周期中并作出相应的响应。

公开(公告)号：US20100322196A1

公开(公告)日：2010-12-23

申请号：US12652242

申请日：2010-01-05

申请人： George Cherian ,  Jiming Guo ,  Peerapol Tinnakornsrisuphap ,  Rashid A. Attar ,  Bongyong Song ,  Mingxi Fan ,  Ravindra M. Patwardhan

发明人： George Cherian ,  Jiming Guo ,  Peerapol Tinnakornsrisuphap ,  Rashid A. Attar ,  Bongyong Song ,  Mingxi Fan ,  Ravindra M. Patwardhan

IPC分类号： H04W4/00 ,  H04H20/71

CPC分类号： H04L12/1877 ,  H04L12/1854 ,  H04L12/189 ,  H04W72/005

摘要： A method and apparatus providing broadcast content over a unicast channel. The method and apparatus may be configured to determine whether content received using a broadcast type format is to be transmitted using a unicast type format, and to map the content to a unicast reservation upon a determination that the content is to be transmitted using the unicast type format.

摘要翻译： 一种通过单播信道提供广播内容的方法和装置。 该方法和装置可以被配置为确定使用广播类型格式接收的内容是否将使用单播格式发送，并且在确定要使用单播类型发送内容时将内容映射到单播预约 格式。

公开(公告)号：US07515580B2

公开(公告)日：2009-04-07

申请号：US10866296

申请日：2004-06-10

申请人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

发明人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

IPC分类号： H04J3/24

CPC分类号： H04W52/24 ,  H04W52/26 ,  H04W52/267 ,  H04W52/286 ,  H04W68/00 ,  H04W72/1231

摘要： In a data communication system capable of variable rate transmission, the data rate is determined by the largest C/I measurement of the forward link signals as measured at the Access Terminal. In one embodiment, the data transmission is scheduled based on an Access Terminal initiated forward power control, which reduces forward link rate quantization loss due to excess transmit power. The Access Terminal reports to the Access Point the excess C/I estimate for the selected rate. The Access Point then reduces its transmit power by an appropriate amount when serving that Access Terminal. In another embodiment, the data transmission is scheduled based on an Access Point initiated forward power control. The Access Point varies its transmit power over time either randomly or in synchronism with neighboring Access Points in the communication system, which enables an increase in the throughput achieved by users that receive a significant amount of interference.

公开(公告)号：US07177648B2

公开(公告)日：2007-02-13

申请号：US10728635

申请日：2003-12-05

申请人： Rashid A. Attar ,  Rajiv Vijayan ,  Roberto Padovani ,  Nagabhushana T. Sindhushayana ,  Qiang Wu ,  Peter J. Black ,  Eduardo A. S. Esteves

发明人： Rashid A. Attar ,  Rajiv Vijayan ,  Roberto Padovani ,  Nagabhushana T. Sindhushayana ,  Qiang Wu ,  Peter J. Black ,  Eduardo A. S. Esteves

IPC分类号： H04Q7/20

CPC分类号： H04W36/18 ,  H04L1/20 ,  H04W36/30 ,  H04W52/24 ,  H04W52/26

摘要： Methods and apparatus for selecting a serving sector in a high rate data (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which a sector of an Access Point may send data packets to an Access Terminal. The sector is selected by the Access Terminal to achieve the highest data throughput while maintaining a targeted packet error rate. The Access Terminal employs various methods to evaluate quality metrics of forward and reverse links from and to different sectors, and uses the quality metrics to select the sector to send data packets to the Access Terminal.

摘要翻译： 公开了在高速率数据（HDR）通信系统中选择服务扇区的方法和装置。 示例性HDR通信系统定义了一组数据速率，在该组数据速率下，接入点的扇区可以向接入终端发送数据分组。 访问终端选择该扇区以实现最高的数据吞吐量，同时保持目标分组错误率。 接入终端采用各种方法来评估来自不同扇区的前向和反向链路的质量度量，并使用质量度量来选择扇区将数据分组发送到接入终端。

公开(公告)号：US06694469B1

公开(公告)日：2004-02-17

申请号：US09549017

申请日：2000-04-14

申请人： Ahmad Jalali ,  Eduardo A. S. Esteves ,  Nagabhushana T. Sindhushayana ,  Peter J. Black ,  Rashid A. Attar

发明人： Ahmad Jalali ,  Eduardo A. S. Esteves ,  Nagabhushana T. Sindhushayana ,  Peter J. Black ,  Rashid A. Attar

IPC分类号： G08C2502

CPC分类号： H04L1/1887 ,  H04L1/1692 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/188

摘要： A method and an apparatus for quick retransmission of signals in a communication system are disclosed. A transmitting terminal, e.g., a base station, transmits signals in a form of packets to a receiving terminal, e.g., a subscriber station. The receiving terminal determines if the packet was intended for the receiving terminal, and if so, the receiving terminal demodulates the packet. The receiving terminal then computes a quality metric of the packet, e.g., a cyclic redundancy check, and compares the computed quality metric with a quality metric contained in the packet. If the quality metrics match, the packet is declared correctly received, and is forwarded for further processing. If the quality metrics fail to match, the receiving terminal sends a request for retransmission of the packet. The transmitting terminal determines which packet needs to be retransmitted based on the request for retransmission. The transmitting terminal then schedules the packet for retransmission. If delivery of the packet in accordance with the aforementioned description fails, retransmission in accordance with conventional sequence-number-based schemes, e.g., radio link protocol, is attempted.

摘要翻译： 公开了一种在通信系统中快速重发信号的方法和装置。 发送终端（例如基站）以分组的形式向接收终端（例如，用户台）发送信号。 接收终端确定分组是否用于接收终端，如果是，则接收终端解调分组。 接收终端然后计算分组的质量度量，例如循环冗余校验，并将计算的质量度量与分组中包含的质量度量进行比较。 如果质量度量匹配，则报文被正确地接收，并被转发用于进一步的处理。 如果质量度量不匹配，则接收终端发送分组请求。 发送终端根据重传请求确定哪个分组需要重传。 然后，发送终端调度分组进行重传。 如果根据上述描述的分组的传送失败，则尝试根据常规的基于序列号的方案，例如无线电链路协议进行重传。

公开(公告)号：US20130215788A1

公开(公告)日：2013-08-22

申请号：US13401143

申请日：2012-02-21

申请人： Linhai He ,  Rashid A. Attar ,  Christopher G. Lott ,  Donna Ghosh ,  Chaitanya Mannemala ,  Sunit Bhatia ,  Sudheer Konda ,  Gopal Chillariga

发明人： Linhai He ,  Rashid A. Attar ,  Christopher G. Lott ,  Donna Ghosh ,  Chaitanya Mannemala ,  Sunit Bhatia ,  Sudheer Konda ,  Gopal Chillariga

IPC分类号： H04W52/02 ,  H04W24/00

CPC分类号： H04W52/0241 ,  H04W52/0232 ,  H04W52/0258 ,  H04W88/08 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/142

摘要： A wireless communications power saving method and apparatus is provided. The method includes establishing a circular buffer configured to maintain a number of most recently encountered frame delay times and waiting a frame delay time after receiving a further frame before the station enters a power save state. Frame delay time is a period equal to a largest most recently encountered frame delay period in the circular buffer. The method further determines, at a station, a dormancy time based on a number of data frames received since the station transitioned from an inactive mode to an active mode, a packet transmission rate, and a data frame time interval representing time between data frames received at the station, and causes the station to switch to a further inactive mode if a next packet is not received within the dormancy time after receipt of a previous packet.

摘要翻译： 提供一种无线通信省电方法和装置。 该方法包括建立循环缓冲器，该循环缓冲器被配置为保持最近遇到的帧延迟时间的数量，并且在站进入省电状态之前在接收到另一帧之后等待帧延迟时间。 帧延迟时间是等于循环缓冲器中最大遇到的最大帧延迟周期的周期。 该方法还在一个站点基于从站从非活动模式转换到活动模式，分组传输速率和表示接收到的数据帧之间的时间的数据帧时间间隔，接收到的数据帧数，在一个站处确定休眠时间 并且如果在接收到先前分组之后的休眠时间内没有接收到下一分组，则使得站切换到另一非活动模式。

公开(公告)号：US20110243067A1

公开(公告)日：2011-10-06

申请号：US13009713

申请日：2011-01-19

申请人： Vikram Gupta ,  Rashid A. Attar ,  Yu-Cheun Jou ,  Ravindra Manohar Patwardhan

发明人： Vikram Gupta ,  Rashid A. Attar ,  Yu-Cheun Jou ,  Ravindra Manohar Patwardhan

IPC分类号： H04W40/00

CPC分类号： H04L1/1854 ,  H04L1/1887 ,  H04L1/189

摘要： Disclosed are examples in which the acknowledgement channel is used for retransmitting a frame received with error. A receiver is configured to transmit an acknowledgment for a frame when the frame is decoded following receipt of the last Pilot Control Group (PCG) of the same frame. The transmitter is configured to receive the acknowledgment of an earlier frame during a subsequent frame, and not to retransmit the earlier frame. The two frames may be adjacent. During connection setup negotiation, the system can determine the values of ack_mask1 defining allowed times for the receiver to acknowledge successful decoding of the subsequent frame, and ack_mask2 defining allowed times for the receiver to acknowledge successful decoding of the earlier frame. The two mask values provide non-overlapping allowed times, so the receiver can acknowledge within the subsequent frame (1) successful decoding of the earlier frame, and (2) successful decoding of the subsequent frame.

摘要翻译： 公开了使用确认信道重传发送错误帧的示例。 接收机被配置为当在接收到相同帧的最后一个导频控制组（PCG）之后解码帧时，发送对帧的确认。 发射机被配置为在后续帧期间接收较早帧的确认，而不是重传较早的帧。 两个框架可以相邻。 在连接建立协商期间，系统可以确定确定接收机允许后续帧的成功解码的允许时间的ack_mask1的值，以及ack_mask2定义接收机允许对较早帧的成功解码的允许时间。 两个屏蔽值提供不重叠的允许时间，因此接收机可以在随后的帧（1）中对先前帧的成功解码进行确认，以及（2）后续帧的成功解码。

公开(公告)号：US07933235B2

公开(公告)日：2011-04-26

申请号：US10893060

申请日：2004-07-15

申请人： Christopher G. Lott ,  Naga Bhushan ,  Donna Ghosh ,  Rashid A. Attar

发明人： Christopher G. Lott ,  Naga Bhushan ,  Donna Ghosh ,  Rashid A. Attar

IPC分类号： H04W4/00

CPC分类号： H04W52/34 ,  H04W52/24 ,  H04W52/26

摘要： An access terminal (206) configured for wireless communication with an access network (204) within a sector (1032). The access terminal includes a transmitter (2608) for transmitting a reverse traffic channel to the access network (204), an antenna (2614) for receiving signals from the access network (204), a processor (2602) and memory (2604) in electronic communication with the processor (2602). Instructions stored in the memory (2604) implement, for each flow (1216) of a plurality of flows on the access terminal (206), determining the flow's total available power (1238). The access terminal's total available power (1234) is determined by summing each flow's total available power (1238). A packet is transmitted to the access network (204) at a power level that does not exceed the access terminal's total available power (1234).

摘要翻译： 接入终端（206），被配置为与扇区（1032）内的接入网络（204）进行无线通信。 接入终端包括用于向接入网络（204）发送反向业务信道的发射机（2608），用于从接入网络（204）接收信号的天线（2614），处理器（2602）和存储器（2604） 与处理器的电子通信（2602）。 存储在存储器（2604）中的指令针对接入终端（206）上的多个流的每个流（1216）实现确定流的总可用功率（1238）。 接入终端的总可用功率（1234）由每个流的总可用功率求和确定（1238）。 分组以不超过接入终端的总可用功率的功率电平（1234）被发送到接入网络（204）。