公开(公告)号：US20110261786A1

公开(公告)日：2011-10-27

申请号：US12988360

申请日：2009-04-22

申请人： Chandra Bontu ,  Surya Tenneti ,  Devaki Chandramouli ,  David Anderson

发明人： Chandra Bontu ,  Surya Tenneti ,  Devaki Chandramouli ,  David Anderson

IPC分类号： H04W36/00

CPC分类号： H04W48/02 ,  H04W12/08 ,  H04W36/0038

摘要： A base station communicates, with a mobile station, data associated with a packet-switched session in which the mobile station is involved. In response to a handover request from the mobile station, the base station accesses information provisioned for the mobile station to determine whether the mobile station is to be subjected to mobility restriction. Based on the accessed information, the base station determines whether to allow handover of the mobile station. A message is sent to the mobile station to indicate that the requested handover is not allowed if the base station determines that the requested handover is not allowed.

摘要翻译： 基站与移动台通信与涉及移动站的分组交换会话相关联的数据。 响应于来自移动台的切换请求，基站访问为移动站提供的信息，以确定移动站是否将受到移动性限制。 基于所访问的信息，基站确定是否允许移动台的切换。 如果基站确定不允许所请求的切换，则向移动台发送消息以指示所请求的切换不被允许。

公开(公告)号：US07636525B1

公开(公告)日：2009-12-22

申请号：US11423822

申请日：2006-06-13

申请人： Chandra Bontu ,  Kim B. Roberts ,  Han Sun ,  Edgar Velez ,  Kuang Tsan Wu

发明人： Chandra Bontu ,  Kim B. Roberts ,  Han Sun ,  Edgar Velez ,  Kuang Tsan Wu

IPC分类号： H04B10/06

CPC分类号： H04L7/0075 ,  H04B10/60 ,  H04B10/61 ,  H04B10/6162 ,  H04B10/6165 ,  H04L7/0004

摘要： A method and system for initializing a coherent optical receiver. Upon detection of an optical signal, a multi-bit digital sample stream of the optical signal is digitally processed to initialize each one of a plurality of adaptive control blocks of the coherent optical receiver. The adaptive control blocks include at least a dispersion compensation block and a clock recovery block. The dispersion compensation block is initialized before initializing the clock recovery block.

摘要翻译： 一种用于初始化相干光接收机的方法和系统。 在检测到光信号时，数字地处理光信号的多比特数字样本流，以初始化相干光接收机的多个自适应控制块中的每一个。 自适应控制块至少包括色散补偿块和时钟恢复块。 在初始化时钟恢复块之前初始化色散补偿块。

公开(公告)号：US07555227B2

公开(公告)日：2009-06-30

申请号：US11294613

申请日：2005-12-06

申请人： Chandra Bontu ,  Maurice O'Sullivan ,  Kim B. Roberts ,  Han Sun ,  Kuang Tsan Wu

发明人： Chandra Bontu ,  Maurice O'Sullivan ,  Kim B. Roberts ,  Han Sun ,  Kuang Tsan Wu

IPC分类号： H04B10/06

CPC分类号： H04B10/2572 ,  H04B10/60 ,  H04B10/6161 ,  H04B10/6162 ,  H04B10/64 ,  H04J14/06 ,  H04L7/041

摘要： A method of processing a stream of digital samples of an optical signal received by a coherent optical receiver. The digital sample stream is processed to generate a dispersion compensated sample stream. The dispersion compensated sample stream is then processed to compensate polarization dependent impairments of the optical signal.

摘要翻译： 一种处理由相干光接收机接收的光信号的数字样本流的方法。 数字样本流被处理以产生色散补偿样本流。 然后处理色散补偿采样流以补偿光信号的偏振相关损伤。

公开(公告)号：US20070092260A1

公开(公告)日：2007-04-26

申请号：US11328199

申请日：2006-01-10

申请人： Chandra Bontu ,  Kuang Wu ,  John McNicol ,  Kim Roberts ,  Han Sun

发明人： Chandra Bontu ,  Kuang Wu ,  John McNicol ,  Kim Roberts ,  Han Sun

IPC分类号： H04B10/00

CPC分类号： H04J3/0608 ,  H04J14/06 ,  H04L7/027 ,  H04L7/0278 ,  H04L7/048

摘要： A method of a conveying data through an optical communications system. An optical signal is received through the optical communication system, the optical signal comprising data symbols and SYNC bursts, each SYNC burst having a predetermined symbol sequence. The received optical signal is oversampled to generate a multi-bit sample stream. The sample stream is partitioned into blocks of contiguous samples, wherein each block of samples partially overlaps at least one other block of samples and encompasses at least one SYNC burst and a plurality of data symbols. Each block of samples is independently processed to detect a value of each data symbol.

摘要翻译： 一种通过光通信系统传送数据的方法。 通过光通信系统接收光信号，光信号包括数据符号和SYNC脉冲串，每个SYNC脉冲串具有预定的符号序列。 所接收的光信号被过采样以产生多比特采样流。 样本流被划分为连续样本块，其中每个样本块与至少一个其他样本块部分重叠，并且包含至少一个SYNC突发和多个数据符号。 每个样本块被独立地处理以检测每个数据符号的值。

公开(公告)号：US08977277B2

公开(公告)日：2015-03-10

申请号：US13599745

申请日：2012-08-30

申请人： Sophie Vrzic ,  Chandra Bontu ,  Shalini Suresh Periyalwar ,  David G. Steer

发明人： Sophie Vrzic ,  Chandra Bontu ,  Shalini Suresh Periyalwar ,  David G. Steer

IPC分类号： H04W72/08 ,  H04B17/00 ,  H04W24/10

CPC分类号： H04W72/08 ,  H04B17/382 ,  H04W16/14 ,  H04W24/10 ,  H04W72/0453 ,  H04W72/085

摘要： A method at a network node for obtaining spectrum sensing information, the method communicating to at least one of a user equipment and a sensing node at least one event condition for spectrum sensing; providing to the at least one of the user equipment and the sensing node channel descriptors for reporting; and receiving a report from the at least one of the user equipment and the sensing node utilizing the channel descriptors, the report indicating the at least one event condition has been met.

摘要翻译： 一种用于获得频谱感测信息的网络节点的方法，所述方法与用户设备和感测节点中的至少一个通信用于频谱感测的至少一个事件条件; 向所述用户设备和所述感测节点信道描述符中的至少一个提供报告; 以及使用所述信道描述符从所述用户设备和所述感测节点中的至少一个接收到报告，所述报告指示所述至少一个事件条件已被满足。

公开(公告)号：US07894728B1

公开(公告)日：2011-02-22

申请号：US11550042

申请日：2006-10-17

申请人： Han Sun ,  Chandra Bontu ,  Kim B. Roberts ,  John Sitch ,  John Wolczanski

发明人： Han Sun ,  Chandra Bontu ,  Kim B. Roberts ,  John Sitch ,  John Wolczanski

IPC分类号： H04B10/06

CPC分类号： H04L7/0075 ,  H04B10/60 ,  H04B10/61 ,  H04B10/6162 ,  H04B10/6165 ,  H04L7/0004

摘要： A method of compensating phase error between parallel digital signals of a received optical signal, in a coherent optical receiver. A phase differential between the digital signals is determined. A digital skew is imposed between the digital signals, an amount of skew imposed being an integer number of sample periods calculated to most nearly compensate the phase differential. The skewed digital signals are then digitally processed, in the frequency domain, to compensate a residual portion of the phase differential.

摘要翻译： 在相干光接收机中补偿接收光信号的并行数字信号之间的相位误差的方法。 确定数字信号之间的相位差。 在数字信号之间施加数字偏移，施加的倾斜量是被计算为最接近地补偿相位差的整数个采样周期。 然后在频域中数字地处理偏斜的数字信号，以补偿相位差的剩余部分。

公开(公告)号：US07769305B1

公开(公告)日：2010-08-03

申请号：US11533940

申请日：2006-09-21

申请人： Kim B. Roberts ,  Han Sun ,  Chandra Bontu ,  Kuang Tsan Wu

发明人： Kim B. Roberts ,  Han Sun ,  Chandra Bontu ,  Kuang Tsan Wu

IPC分类号： H04B10/00

CPC分类号： H04L7/0075 ,  H04B10/60 ,  H04B10/61 ,  H04B10/6162 ,  H04B10/6165 ,  H04L7/0004

摘要： In a coherent optical receiver, a frequency domain engine digitally processes at least two multi-bit sample streams of a received optical signal. The frequency domain engine includes a Fast Fourier Transform (FFT) filter for computing a complex vector representative of a frequency-domain spectrum of the received optical signal. A transpose and add block computes a vector sum of the complex vector and a transposed version of the complex vector, and an Inverse Fast Fourier Transform (IFFT) filter computes a complex output vector from the addition result. With this arrangement, parallel real filter operations are efficiently performed on each of the multi-bit sample streams, using a single back-to-back FFT-IFFT filter structure.

摘要翻译： 在相干光接收机中，频域引擎对接收到的光信号的至少两个多比特采样数字进行数字处理。 频域引擎包括用于计算表示所接收的光信号的频域频谱的复矢量的快速傅里叶变换（FFT）滤波器。 转置和加法块计算复矢量的矢量和和复矢量的转置版本，而快速傅里叶逆变换（IFFT）滤波器根据相加结果计算复数输出矢量。 利用这种布置，使用单个背靠背FFT-IFFT滤波器结构，对每个多比特采样流有效地执行并行实际滤波器操作。

公开(公告)号：US07418212B1

公开(公告)日：2008-08-26

申请号：US10674530

申请日：2003-10-01

申请人： Chandra Bontu

发明人： Chandra Bontu

IPC分类号： H04B10/06

CPC分类号： H04L25/061 ,  H04B10/695

摘要： A system and method for detecting digital symbols carried in a received optical signal. The system comprises a functional element operative to receive a stream of samples of an electrical signal derived from the received optical signal and to evaluate a non-linear function of each received sample, thereby to produce a stream of processed samples. The system also comprises a detector operative to render decisions about individual symbols present in the received optical signal on the basis of the stream of processed samples. In an embodiment, the non-linear function computes substantially the square root of each received sample.

摘要翻译： 一种用于检测在接收的光信号中携带的数字符号的系统和方法。 该系统包括功能元件，用于接收从接收到的光信号导出的电信号的采样流，并评估每个接收样本的非线性函数，由此产生经处理样本流。 该系统还包括一个检测器，用于根据所处理的采样流对所接收的光信号中存在的各个符号进行判定。 在一个实施例中，非线性函数基本上计算每个接收样本的平方根。

公开(公告)号：US20060285854A1

公开(公告)日：2006-12-21

申请号：US11315342

申请日：2005-12-23

申请人： Han Sun ,  Slobodan Jovanovic ,  Kuang Wu ,  Chandra Bontu ,  Kim Roberts ,  Jianzhong Xu

发明人： Han Sun ,  Slobodan Jovanovic ,  Kuang Wu ,  Chandra Bontu ,  Kim Roberts ,  Jianzhong Xu

IPC分类号： H04B10/00

CPC分类号： H04B10/508 ,  H03L7/085 ,  H03L2207/06 ,  H04J14/06 ,  H04L7/0029 ,  H04L7/0083 ,  H04L7/0278

摘要： A method of recovering a clock signal from an optical signal received through an optical communications system. A digital sample stream is processed to generate a dispersion compensated signal. The dispersion compensated signal is then tapped to obtain upper side band and lower side band signals of each received polarization of the optical signal. The upper side band and lower side band signals are then processed to compensate polarization dependent impairments, and the clock recovered from the resulting optimized.

公开(公告)号：US07684712B1

公开(公告)日：2010-03-23

申请号：US11551367

申请日：2006-10-20

申请人： Kim B. Roberts ,  Chandra Bontu ,  Kuang Tsan Wu ,  Han Sun

发明人： Kim B. Roberts ,  Chandra Bontu ,  Kuang Tsan Wu ,  Han Sun

IPC分类号： H04B10/06 ,  H04L27/06

CPC分类号： H04L7/0075 ,  H04B10/60 ,  H04B10/61 ,  H04B10/6162 ,  H04B10/6165 ,  H04L7/0004

摘要： A method of recovering a most likely value of each symbol transmitted through an optical communications network using a high speed optical signal. A stream of multi-bit digital samples of the optical signal is processed to generate a respective multi-bit estimate X′(n) of each transmitted symbol. A first function is applied to each symbol estimate X′(n) to generate a corresponding soft decision value {tilde over (X)}(n). Each soft decision value {tilde over (X)}(n) is processed to generate a corresponding hard decision value. {circumflex over (X)}(n) having an ideal amplitude and phase. A plurality of successive soft decision values and hard decision values are processed to determine a second function, which is applied to each soft decision value {tilde over (X)}(n) to generate a most likely symbol value {circumflex over ({circumflex over (X)}(n).

摘要翻译： 一种利用高速光信号恢复通过光通信网传输的每个符号的最可能值的方法。 对光信号的多比特数字样本流进行处理以产生每个发送符号的相应的多比特估计X'（n）。 将第一函数应用于每个符号估计X'（n）以产生相应的软判决值{（X）}（n）上的波浪号。 处理每个软决策值（对（X）}（n）的波形）以产生相应的硬判决值。 （X）}（n）具有理想的振幅和相位。 处理多个连续的软判决值和硬判决值以确定第二函数，其被应用于每个软判决值（（X）}（n）上的波形）以产生最可能的符号值{回旋（{circumflex （X）}（n）。