公开(公告)号：US07558201B2

公开(公告)日：2009-07-07

申请号：US11278154

申请日：2006-03-31

Applicant: Aimin Sang ,  Xiaodong Wang ,  Mohammad Madihian

Inventor： Aimin Sang ,  Xiaodong Wang ,  Mohammad Madihian

IPC: G01R31/08

CPC classification number: H04L47/801 ,  H04L47/10 ,  H04L47/15 ,  H04L47/70 ,  H04L47/808 ,  H04L47/822 ,  H04L47/823 ,  H04L47/824

Abstract: A call admission control technique is described which is well-suited for wireless systems providing real-time services over a shared downlink. The call admission control technique considers both multiplexing and multi-user diversity gain. The technique accurately determines the multi-user diversity gain by measuring per-user resource allocation and advantageously maximizes user accommodations under quality-of-service (QoS) as well as location-dependent resource availability constraints. In a further aspect, the call admission control technique is combined with delay-based scheduling, which effectively balances between system efficiency (channel exploitation) and user expectation (e.g., QoS). A system embodying the described call admission control and scheduling techniques can advantageously deliver efficient real-time services and remain robust to different load scenarios that vary according to system dynamics and/or user mobility.

Abstract translation: 描述了一种适合于通过共享下行链路提供实时服务的无线系统的呼叫准入控制技术。 呼叫接纳控制技术考虑复用和多用户分集增益。 该技术通过测量每用户资源分配来准确地确定多用户分集增益，并有利地最大限度地提高了服务质量（QoS）以及位置相关资源可用性约束下的用户住宿。 在另一方面，呼叫接纳控制技术与基于延迟的调度相结合，其有效平衡系统效率（信道利用）和用户期望（例如，QoS）之间的平衡。 体现所描述的呼叫接纳控制和调度技术的系统可以有利地提供有效的实时服务，并且对于根据系统动态和/或用户移动性而变化的不同负载情况保持稳健。

公开(公告)号：US20090129328A1

公开(公告)日：2009-05-21

申请号：US12273810

申请日：2008-11-19

Applicant: Narayan Prasad ,  Xiaodong Wang

Inventor： Narayan Prasad ,  Xiaodong Wang

IPC: H04W74/00

CPC classification number: H04W28/22 ,  H04W72/04

Abstract: There is provided a method for allocating transmission rates in a wireless network, includes the steps of associating transmitters with corresponding receivers for communicating on an interference channel in the wireless network, and allocating a transmission rate to each transmitter for decoding by its corresponding receiver, the allocated transmission rate being equal to a desired rate of a fixed user rate and being no less than a minimum rate of a variable user rate. The step of allocating can include a sequential allocation that meets the minimum rate requirement of all users and assigns excess rates to variable rate users in a sequential fashion according to specified priorities. The step of allocating can include a parallel symmetric rate allocation when all variable rate users have the same priority and that meets minimum rate requirements of all users and is symmetric fair. The step of allocating can include a parallel iterative rate allocation with the sequence of rate allocations obtained for each user being non-decreasing and a rate allocation vector obtained after each iteration meets minimum rate requirements for all users and is max-min fair when all variable rate users have the same priority.

Abstract translation: 提供了一种用于在无线网络中分配传输速率的方法，包括将发射机与对应的接收机相关联的步骤，用于在无线网络中的干扰信道上进行通信，并且向每个发射机分配传输速率以由其对应的接收机进行解码， 分配的传输速率等于固定用户速率的期望速率，并且不小于可变用户速率的最小速率。 分配步骤可以包括满足所有用户的最低速率要求的顺序分配，并且根据指定的优先级以顺序方式向可变速率用户分配超额费率。 当所有可变速率用户具有相同优先级并且满足所有用户的最低速率要求并且对称公平时，分配步骤可以包括并行对称速率分配。 分配步骤可以包括并行迭代速率分配，其中为每个用户获得的速率分配序列是不减少的，以及在每个迭代满足所有用户的最小速率要求之后获得的速率分配向量，并且当所有变量 率用户具有相同的优先级。

公开(公告)号：US20090125294A1

公开(公告)日：2009-05-14

申请号：US12183387

申请日：2008-07-31

Applicant: Malay K. Ganai

Inventor： Malay K. Ganai

IPC: G06F9/45

CPC classification number: G06F11/3608

Abstract: A system and method for bounded model checking of computer programs includes providing a program having at least one reachable property node. The program is decomposed for bounded model checking (BMC) into subproblems by creating a tunnel based on disjunctive control paths through the program. A reduced BMC sub-problem obtained using BMC unrolling, while using path constraints imposed by the at least one tunnel. For the reachable property node, determining a quantifier-free formula (QFP) in a decidable subset of first order logic. Satisfiability of the QFP is checked, independently and individually, to determine whether the QFP is satisfiable for the subproblem. The decomposing is continued until the a BMC bound is reached.

Abstract translation: 用于计算机程序的有界模型检查的系统和方法包括提供具有至少一个可达属性节点的程序。 该程序通过基于通过程序的分离控制路径创建隧道，将有界模型检查（BMC）分解为子问题。 使用BMC展开获得的减少的BMC子问题，同时使用由至少一个隧道施加的路径约束。 对于可达性属性节点，在一阶逻辑的可判定子集中确定无量子公式（QFP）。 单独和单独检查QFP的满意度，以确定QFP是否满足子问题。 分解继续，直到达到BMC界限。

公开(公告)号：US20090094004A1

公开(公告)日：2009-04-09

申请号：US12236071

申请日：2008-09-23

Applicant: SRIRAM SANKARANARAYANAN ,  FRANJO IVANCIC

Inventor： SRIRAM SANKARANARAYANAN ,  FRANJO IVANCIC

IPC: G06F17/10

CPC classification number: G05B15/02

Abstract: In accordance with aspects of the present principles, an over-approximation of reachable states of a hybrid system may be determined by utilizing template polyhedra. Policy iteration may be utilized to obtain an over-approximation of reachable states in the form of a relaxed invariant based upon template polyhedra expressions. The relaxed invariant may be used to construct a flowpipe to refine the over-approximation and thereby determine the reachable states of the hybrid system.

Abstract translation: 根据本原理的方面，可以通过利用模板多面体来确定混合系统的可达状态的过近似。 可以利用策略迭代来基于模板多面体表达式以松弛不变量的形式获得可达状态的过近似。 可以使用松弛的不变量来构造流量管以改善过近似度，从而确定混合系统的可达状态。

公开(公告)号：US20090092389A1

公开(公告)日：2009-04-09

申请号：US12207964

申请日：2008-09-10

Applicant: Wei Wei ,  Ting Wang

Inventor： Wei Wei ,  Ting Wang

IPC: H04J14/00

CPC classification number: H04J14/0283 ,  H04J4/00 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0294 ,  H04J14/0295 ,  H04J14/0298 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0091 ,  H04Q11/0066 ,  H04Q2011/0064 ,  H04Q2011/0069 ,  H04Q2011/0088 ,  H04Q2011/0092

Abstract: A fiber optic network transmits data between a hub node and a plurality of local nodes connected by at least one unidirectional fiber ring. Downstream data streams are carried on wavelength-division-multiplexed optical carriers from the hub node to the local nodes. An optical carrier corresponding to a specific wavelength carries downstream data streams to a specific local node. Downstream data streams are multiplexed onto an optical carrier via orthogonal frequency division multiplexing. A parallel signal detector in each local node detects all downstream optical carriers. A signal processing module demultiplexes the data stream from the optical carrier having the specific wavelength corresponding to the local node. An upstream data stream is multiplexed via orthogonal frequency division multiplexing onto an upstream optical carrier having the same specific wavelength and transmitted from the local node to the hub node. Upstream data awaiting transmission is allocated to specific subcarriers and time slots.

Abstract translation: 光纤网络在集线器节点与由至少一个单向光纤环连接的多个本地节点之间传输数据。 下行数据流在从中心节点到本地节点的波分复用光载波上承载。 对应于特定波长的光载波将下行数据流传送到特定的本地节点。 下行数据流经由正交频分复用复用到光载波上。 每个本地节点中的并行信号检测器检测所有下游光载波。 信号处理模块从具有对应于本地节点的特定波长的光载波解复用数据流。 上行数据流通过正交频分复用复用到具有相同特定波长并从本地节点传送到集线器节点的上行光载波上。 等待发送的上行数据被分配给特定子载波和时隙。

公开(公告)号：US07516346B2

公开(公告)日：2009-04-07

申请号：US11163607

申请日：2005-10-25

Applicant: Eduardo Pinheiro ,  Ricardo Bianchini ,  Cezary Dubnicki

Inventor： Eduardo Pinheiro ,  Ricardo Bianchini ,  Cezary Dubnicki

IPC: G06F1/00

CPC classification number: G06F3/0625 ,  G06F1/3221 ,  G06F1/3268 ,  G06F3/0634 ,  G06F3/0689 ,  Y02D10/154

Abstract: A system and method for reducing energy consumption in an information storage system is disclosed which takes advantage of the redundancy in a typical storage system.

Abstract translation: 公开了一种用于降低信息存储系统中的能量消耗的系统和方法，其利用典型存储系统中的冗余。

公开(公告)号：US20090080551A1

公开(公告)日：2009-03-26

申请号：US12236840

申请日：2008-09-24

Applicant: Chuanhui Ma ,  Ting Wang

Inventor： Chuanhui Ma ,  Ting Wang

IPC: H04L27/28

CPC classification number: H04L27/2602 ,  H04L27/2615 ,  H04L27/2618

Abstract: A method for encoding an OFDM signal includes pairing two adjacent subcarriers of an OFDM signal as a group, changing a modulated symbol set of the OFDM signal to a modified symbol set for coding the OFDM signal, and providing a modified baseband OFDM signal with an increased frequency separation between the subcarriers and reducing the total number of subcarriers being used for transmission over each OFDM symbol interval.

Abstract translation: 对OFDM信号进行编码的方法包括将OFDM信号的两个相邻子载波组合成一组，将OFDM信号的调制符号集合改变为用于对OFDM信号进行编码的修改符号集，并且提供具有增加的OFDM符号的修改的基带OFDM信号 子载波之间的频率间隔，并且减少用于每个OFDM符号间隔上的传输的子载波的总数。

公开(公告)号：US20090059351A1

公开(公告)日：2009-03-05

申请号：US12050538

申请日：2008-03-18

Applicant: LEI XU ,  TING WANG ,  JIANJUN YU ,  PHILIP NAN JI ,  YUTAKA YANO

Inventor： LEI XU ,  TING WANG ,  JIANJUN YU ,  PHILIP NAN JI ,  YUTAKA YANO

IPC: G02F2/00

CPC classification number: H04B10/677 ,  H04L27/223 ,  H04L27/2331

Abstract: A demodulator and demodulation method includes an optical coupler configured to receive an input signal. The optical coupler couples the signal to an even number of branches. Each branch including at least one interferometer configured to split, combine and interfere with an optical signal from one of within the branch or from another branch. A common optical delay is disposed on one of every two branches between the optical coupler and the interferometer of the branch.

Abstract translation: 解调器和解调方法包括被配置为接收输入信号的光耦合器。 光耦合器将信号耦合到偶数个分支。 每个分支包括至少一个干涉仪，其构造成分离，组合和干扰来自分支内或另一分支之一的光信号。 在光耦合器和分支的干涉仪之间的每两个分支之一上设置常见的光学延迟。

公开(公告)号：US20080294684A1

公开(公告)日：2008-11-27

申请号：US11874395

申请日：2007-10-18

Applicant: Yun Chi ,  Xiaodan Song ,  Koji Hino ,  Belle L. Tseng

Inventor： Yun Chi ,  Xiaodan Song ,  Koji Hino ,  Belle L. Tseng

IPC: G06F17/30

CPC classification number: G06F17/3071 ,  G06F17/30873 ,  G06K9/6224

Abstract: Systems and methods are disclosed for clusterizing information by determining similarity matrix for historical information and similarity matrix for current information; generating an aggregated similarity matrix (aggregated kernel); and applying evolutionary spectral clustering on the aggregated kernel to a content stream to produce one or more clusters.

Abstract translation: 公开了通过确定当前信息的历史信息和相似性矩阵的相似度矩阵来对信息进行聚类的系统和方法; 生成聚合相似矩阵（聚合内核）; 并将聚合的内核上的进化谱聚类应用于内容流以产生一个或多个聚类。

公开(公告)号：US20080267630A1

公开(公告)日：2008-10-30

申请号：US12039981

申请日：2008-02-29

Applicant: DAYOU QIAN ,  JUNQIANG HU ,  JIANJUN YU ,  PHILIP NAN JI ,  LEI XU ,  TING WANG ,  MILORAD CVIJETIC ,  TOSHIHIKO KUSANO

Inventor： DAYOU QIAN ,  JUNQIANG HU ,  JIANJUN YU ,  PHILIP NAN JI ,  LEI XU ,  TING WANG ,  MILORAD CVIJETIC ,  TOSHIHIKO KUSANO

IPC: H04J14/00

CPC classification number: H04L5/023 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0298 ,  H04L5/0007

Abstract: A passive optical network (PON) device, system and method include an optical line terminal (OLT) receiver configured to receive multiple signals at different wavelengths simultaneously and enable multiple transmitters to operate at the same time during one upstream time slot. The optical line terminal employs Orthogonal Frequency Division Multiple Access (OFDMA) to transparently support a plurality of applications and enable dynamic bandwidth allocation among these applications where the bandwidth is allocated in two dimensional frequency and time space.

Abstract translation: 无源光网络（PON）设备，系统和方法包括配置为同时接收不同波长的多个信号的光线路终端（OLT）接收机，并使得多个发射机能够在一个上行时隙同时进行操作。 光线路终端使用正交频分多址（OFDMA）来透明地支持多个应用，并且在带宽被分配在二维频率和时间空间中的这些应用中实现动态带宽分配。