公开(公告)号：US08457885B2

公开(公告)日：2013-06-04

申请号：US13498556

申请日：2011-06-16

Applicant: Arvind Vijay Keerthi

Inventor： Arvind Vijay Keerthi

IPC: G08G1/123

CPC classification number: G01C21/00 ,  A63F3/00072 ,  A63F2003/00201 ,  G01C21/3476

Abstract: Technology is generally described for computing paths between geographical localities. The technology can receive a request for a path between two or more geographical localities, and compute a path based at least on a popularity rating of intermediate geographical localities.

Abstract translation: 技术通常被描述为用于计算地理位置之间的路径。 该技术可以接收到两个或更多地理位置之间的路径的请求，并且至少基于中间地理位置的受欢迎程度来计算路径。

公开(公告)号：US09275404B2

公开(公告)日：2016-03-01

申请号：US13497494

申请日：2011-06-16

Applicant: Arvind Vijay Keerthi

Inventor： Arvind Vijay Keerthi

IPC: G06Q30/02 ,  G06Q10/06 ,  G06Q30/06

CPC classification number: G06Q30/0282 ,  G06F17/30864 ,  H04L67/22

Abstract: Techniques for determining the popularity of a business entity are provided. A communication is received at a computing system. The computing system searches the received communication for a business entity name. The computing system also searches the received communication for information related to an opinion about the business entity. Based on the information related to the opinion, the computing system determines a customer satisfaction rating of the business entity.

Abstract translation: 提供了确定业务实体受欢迎程度的技术。 在计算系统处接收到通信。 计算系统搜索所接收的通信中的业务实体名称。 计算系统还在接收的通信中搜索关于业务实体的意见的信息。 根据与意见相关的信息，计算系统确定业务实体的客户满意度评级。

公开(公告)号：US20140376357A1

公开(公告)日：2014-12-25

申请号：US14354116

申请日：2013-07-31

Applicant: Arvind Vijay Keerthi

Inventor： Arvind Vijay Keerthi

IPC: H04J11/00 ,  H04L5/00 ,  H04W24/08 ,  H04W72/08

CPC classification number: H04W24/08 ,  H04L5/0046 ,  H04L5/0057 ,  H04L5/006

Abstract: Technologies are generally described for providing a transition between predictive and mobile-assisted spectral allocation. In some examples, wireless devices may be enabled to determine adequacy of theft allocated spectral path to meet their communication needs by analyzing signal-to-noise ratios (SNRs) of their assigned sub-carriers. If a wireless device determines a current sub-carrier to be inadequate based on the analysis, it may send information associated with preferred sub-carriers to a base station. The base station may determine one or more nearby good clusters based on a comparison of a sequence of received preferred sub-carriers and the spectral paths represented by the nearby cluster centers, and select a re-allocated spectral path with shortest information distance to the sequence of preferred sub-carriers.

Abstract translation: 通常描述技术用于提供预测和移动辅助频谱分配之间的转换。 在一些示例中，可以使无线设备能够通过分析其分配的子载波的信噪比（SNR）来确定盗窃分配的频谱路径的充分性以满足其通信需求。 如果无线设备基于分析确定当前子载波不足，则它可以向基站发送与优选子载波相关联的信息。 基站可以基于接收到的优选子载波的序列与由附近的聚类中心表示的频谱路径的比较来确定一个或多个附近的优选聚类，并且选择具有到该序列的最短信息距离的重新分配的光谱路径 的优选子载体。

公开(公告)号：US20130046706A1

公开(公告)日：2013-02-21

申请号：US13497494

申请日：2011-06-16

Applicant: Arvind Vijay Keerthi

Inventor： Arvind Vijay Keerthi

IPC: G06Q30/02

CPC classification number: G06Q30/0282 ,  G06F17/30864 ,  H04L67/22

Abstract: Techniques for determining the popularity of a business entity are provided. A communication is received at a computing system. The computing system searches the received communication for a business entity name. The computing system also searches the received communication for information related to an opinion about the business entity. Based on the information related to the opinion, the computing system determines a customer satisfaction rating of the business entity.

Abstract translation: 提供了确定业务实体受欢迎程度的技术。 在计算系统处接收到通信。 计算系统搜索所接收的通信中的业务实体名称。 计算系统还在接收的通信中搜索关于业务实体的意见的信息。 根据与意见相关的信息，计算系统确定业务实体的客户满意度评级。

公开(公告)号：US08102923B2

公开(公告)日：2012-01-24

申请号：US11567014

申请日：2006-12-05

Applicant: Alexei Gorokhov ,  Avneesh Agrawal ,  Arvind Vijay Keerthi

Inventor： Alexei Gorokhov ,  Avneesh Agrawal ,  Arvind Vijay Keerthi

IPC: H04B14/04

CPC classification number: H03M13/2945 ,  H03M13/2903 ,  H03M13/2948 ,  H03M13/2978 ,  H03M13/6362 ,  H03M13/6513 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0065 ,  H04L1/007 ,  H04L5/023 ,  H04L2001/0093 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/2402 ,  H04N21/2404 ,  H04N21/2405 ,  H04N21/6405 ,  H04N21/6408

Abstract: Techniques for sending signaling information using hierarchical coding are described. With hierarchical coding, individual messages for users are encoded using multiple interconnected encoders such that (1) the message for each user is sent at a data rate suitable for that user and (2) a single multicast message is generated for the messages for all users. A base station determines data rates supported by the users and the code rates to achieve these data rates. Each data rate is determined by one or more code rates. Signaling information for the users is mapped to data blocks to be sent at different data rates. Each data block is then encoded in accordance with the code rate(s) associated with the data rate for that data block. A final coded block is generated for all users and transmitted. Each user performs the complementary decoding to recover the message sent to that user.

Abstract translation: 描述使用分层编码发送信令信息的技术。 使用分层编码，使用多个互连的编码器对用户的各个消息进行编码，使得（1）以适合于该用户的数据速率发送每个用户的消息，以及（2）为所有用户生成消息的单个多播消息 。 基站确定用户支持的数据速率和码率来实现这些数据速率。 每个数据速率由一个或多个码率决定。 将用户的信令信息映射到以不同数据速率发送的数据块。 然后根据与该数据块的数据速率相关联的码率对每个数据块进行编码。 为所有用户生成最终编码块并进行传输。 每个用户执行补充解码以恢复发送给该用户的消息。

公开(公告)号：US07830976B2

公开(公告)日：2010-11-09

申请号：US11182235

申请日：2005-07-15

Applicant: Alexei Gorokhov ,  Avneesh Agrawal ,  Dhananjay Ashok Gore ,  Arvind Vijay Keerthi

Inventor： Alexei Gorokhov ,  Avneesh Agrawal ,  Dhananjay Ashok Gore ,  Arvind Vijay Keerthi

IPC: H04B7/02

CPC classification number: H04L25/0236 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/023 ,  H04L25/0248 ,  H04L27/2647

Abstract: Estimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. Next, an initial estimate value is selected for the interference level. The initial estimate value for the interference level is used together with the received pilot symbols to provide a first estimate of the channel. The first estimate of the channel is used to determine a new updated value for the interference level, which in turn, is used to update the value of the first estimate of the channel iteratively. The iterations continue until the iteratively updated values of the interference level and channel satisfy predefined limits. The data symbols and the final updated value of the channel are subsequently used to provide a second estimate for the channel.

Abstract translation: 并行执行时变多载波多用户系统中的信道特性和干扰电平的估计。 为了执行估计，通过信道发送多个数据符号和专用导频符号。 接下来，针对干扰电平选择初始估计值。 干扰电平的初始估计值与接收到的导频符号一起使用以提供信道的第一估计。 信道的第一估计用于确定用于干扰电平的新的更新值，其又用于迭代地更新信道的第一估计值。 迭代继续，直到干扰电平和通道的迭代更新值满足预定义的限制。 随后使用数据符号和信道的最终更新值来提供信道的第二估计。

公开(公告)号：US07609786B2

公开(公告)日：2009-10-27

申请号：US11021292

申请日：2004-12-22

Applicant: Arvind Vijay Keerthi

Inventor： Arvind Vijay Keerthi

IPC: H03D1/00 ,  H04B1/69

CPC classification number: H04L25/0248 ,  H04L25/0224 ,  H04L27/2647

Abstract: Techniques for performing channel estimation in a multi-carrier system are described. A frequency response estimate is initially obtained for a wireless channel based on a narrowband pilot sent on different sets of subbands in different symbol periods or a wideband pilot sent on all or most subbands in the system. Spectral estimation is performed on the frequency response estimate to determine at least one frequency component of the frequency channel estimate, with each frequency component being indicative of a delay for a channel tap in an impulse response estimate for the wireless channel. A channel estimate for the wireless channel is then obtained based on the frequency component(s) determined by the spectral estimation. This channel estimate may be a channel profile, the impulse response estimate, an improved frequency response estimate, a signal arrival time, or some other pertinent information regarding the wireless channel.

Abstract translation: 描述用于在多载波系统中执行信道估计的技术。 基于在不同符号周期的不同子带集合上发送的窄带导频或在系统中的所有或大多数子带上发送的宽带导频，最初获得针对无线信道的频率响应估计。 对频率响应估计执行频谱估计以确定频道估计的至少一个频率分量，其中每个频率分量指示无线信道的脉冲响应估计中的信道抽头的延迟。 然后基于由频谱估计确定的频率分量来获得无线信道的信道估计。 该信道估计可以是关于无线信道的信道简档，脉冲响应估计，改进的频率响应估计，信号到达时间或一些其他相关信息。

公开(公告)号：US07492828B2

公开(公告)日：2009-02-17

申请号：US11021694

申请日：2004-12-22

Applicant: Arvind Vijay Keerthi

Inventor： Arvind Vijay Keerthi

IPC: H04L27/06 ,  H04L27/28

CPC classification number: H04L7/041

Abstract: To perform time synchronization using spectral estimation, a receiver obtains a frequency response estimate for pilot symbols received on each set of frequency subbands used for pilot transmission. The receiver performs spectral estimation on frequency response estimates for different sets of subbands to obtain a measured arrival time for a transmission from a transmitter. The spectral estimation determines a dominant frequency component in the frequency response estimates and derives the measured arrival time based on this dominant frequency component. A time error between the measured arrival time and a desired arrival time is computed and possibly filtered. The filtered or unfiltered time error is scaled with a fixed or adjustable gain. A time adjustment is then generated based on the scaled time error and using linear and/or non-linear functions. The time adjustment is sent to the transmitter and used to adjust the transmit timing at the transmitter.

Abstract translation: 为了使用频谱估计来执行时间同步，接收机获得在用于导频传输的每组频率子带上接收的导频符号的频率响应估计。 接收机对不同子带组的频率响应估计进行频谱估计，以获得来自发射机的传输的测量到达时间。 频谱估计确定频率响应估计中的主要频率分量，并且基于该主要频率分量导出测量的到达时间。 计算测量到达时间与期望到达时间之间的时间误差，并可能过滤。 滤波或未滤波的时间误差用固定或可调增益进行缩放。 然后基于缩放的时间误差并使用线性和/或非线性函数来产生时间调整。 时间调整发送到发射机，用于调整发射机的发射定时。