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    • 73. 发明授权
    • Method and apparatus for distributed optimal reverse link scheduling of resources, such as a rate and power in a wireless communication system
    • 用于无线通信系统中的资源的分布式最优反向链路调度的方法和装置,例如速率和功率
    • US06597705B1
    • 2003-07-22
    • US09151391
    • 1998-09-10
    • Ramin RezaiifarJack Holtzman
    • Ramin RezaiifarJack Holtzman
    • H04B7185
    • H04W52/265H04W28/18H04W52/24H04W52/267H04W52/343H04W52/346
    • A method, and corresponding apparatus, applies to individual base stations in a wireless communications systems, where each base station performs rate assignment to mobile stations optimally, but independently of the other base stations. Different base stations affect each other through other cell interference, and continuously modify their reversed link rate assignment based on the other—cell interference received and the requested rates from the mobile stations. The base stations converge to a stable condition with uncoordinated optimizations. The optimizing technique maximizes total through put in each cell (maximizing rates) while maintaining interference to other cells at a minimum level, and being subject to at least some of the following constraints: mobile station's maximum transmit power, mobile station's requested rate, discrete set of possible rates, maximum rise—over—thermal interference at the base station, and minimum required received error per bit normalized for noise.
    • 一种方法和相应的装置适用于无线通信系统中的各个基站,其中每个基站最优地对移动站进行速率分配,但是与其他基站无关。 不同的基站通过其他小区干扰相互影响,并根据接收的其他小区干扰和来自移动台的请求速率,不断修改其反向链路速率分配。 基站收敛于稳定状态,并且具有不协调的优化。 优化技术通过放置在每个小区中来最大化总计(最大化速率),同时在最小水平上保持对其他小区的干扰,并且受到以下至少一些约束:移动台的最大发射功率,移动台的请求速率,离散集合 可能的速率,基站的最大上升热干扰以及针对噪声归一化的每位最小所需接收误差。
    • 76. 发明授权
    • Head pose estimation using RGBD camera
    • 使用RGBD摄像头的头部姿态估计
    • US09582707B2
    • 2017-02-28
    • US13456061
    • 2012-04-25
    • Piyush SharmaAshwin SwaminathanRamin RezaiifarQi Xue
    • Piyush SharmaAshwin SwaminathanRamin RezaiifarQi Xue
    • H04N13/02G06K9/00G06T7/00
    • G06K9/00234G06T7/73G06T2207/10016G06T2207/10024G06T2207/10028G06T2207/30201
    • A three-dimensional pose of the head of a subject is determined based on depth data captured in multiple images. The multiple images of the head are captured, e.g., by an RGBD camera. A rotation matrix and translation vector of the pose of the head relative to a reference pose is determined using the depth data. For example, arbitrary feature points on the head may be extracted in each of the multiple images and provided along with corresponding depth data to an Extended Kalman filter with states including a rotation matrix and a translation vector associated with the reference pose for the head and a current orientation and a current position. The three-dimensional pose of the head with respect to the reference pose is then determined based on the rotation matrix and the translation vector.
    • 基于在多个图像中捕获的深度数据来确定被摄体头部的三维姿态。 头部的多个图像例如通过RGBD照相机被捕获。 使用深度数据确定头部相对于参考姿势的姿态的旋转矩阵和平移向量。 例如,可以在多个图像中的每一个中提取头上的任意特征点,并将其与相应的深度数据一起提供给扩展卡尔曼滤波器,该扩展卡尔曼滤波器的状态包括旋转矩阵和与头部的参考姿势相关联的平移向量 当前方向和当前位置。 然后基于旋转矩阵和平移向量来确定头部相对于参考姿势的三维姿态。
    • 77. 发明授权
    • Access channel load management in a wireless communication system
    • 无线通信系统中的接入信道负载管理
    • US09148893B2
    • 2015-09-29
    • US12393648
    • 2009-02-26
    • Ramin Rezaiifar
    • Ramin Rezaiifar
    • G01R31/08H04W74/08H04W28/22H04W48/12
    • H04W74/0866H04W28/22H04W48/12
    • Techniques for managing the load of an access channel in a wireless communication system are described. In an aspect, the load of the access channel may be controlled by having each terminal regulates its use of the access channel (e.g., its rate of system access) based on a rate control algorithm (e.g., token bucket). The rate control algorithm may maintain information on past activities of a terminal and may regulate the use of the access channel by the terminal based on its past activities in order to control the access channel load and achieve fairness. The system may determine at least one parameter value for the rate control algorithm based on load conditions and may broadcast the at least one parameter value to terminals. Each terminal may regulate its use of the access channel based on the at least one parameter value received from the system.
    • 描述用于管理无线通信系统中的接入信道的负载的技术。 在一方面,可以通过使每个终端基于速率控制算法(例如令牌桶)来调整其对接入信道的使用(例如,其系统接入速率)来控制接入信道的负载。 速率控制算法可以维护关于终端的过去活动的信息,并且可以基于其过去的活动来调整终端对接入信道的使用,以便控制接入信道负载并实现公平性。 系统可以基于负载条件确定速率控制算法的至少一个参数值,并且可以向终端广播至少一个参数值。 每个终端可以基于从系统接收的至少一个参数值来调节其对接入信道的使用。
    • 80. 发明申请
    • FORWARD ERROR CORRECTION SCHEDULING FOR AN IMPROVED RADIO LINK PROTOCOL
    • 改进的无线电链路协议的前向纠错调度
    • US20120208580A1
    • 2012-08-16
    • US13025934
    • 2011-02-11
    • Michael G. LubyMark WatsonRamin RezaiifarLorenzo Vicisano
    • Michael G. LubyMark WatsonRamin RezaiifarLorenzo Vicisano
    • H04W72/12
    • H04L1/0057H04L1/0009H04L1/18
    • Forward error correction scheduling techniques for an improved radio link protocol used in a wireless communication system, such as EV-DO. In one embodiment scheduling of the generation of repair symbols encoded to be transmitted along with source data is described. In another embodiment acknowledgment messages from a receiver are used to control the trailing edge of the protection window offered by the repair symbols. In another embodiment, non-acknowledgment messages from a receiver are used to control the generation of extra repair symbols. In another embodiment, a length field is used to avoid transmission of padding bytes over the air. In yet another embodiment, a symbol auxiliary field is appended to source symbols to indicate the padding bytes needed for symbol aligning thus avoiding the transmission of padding bytes over the air.
    • 用于诸如EV-DO的无线通信系统中使用的改进的无线电链路协议的前向纠错调度技术。 在一个实施例中,描述了编码为与源数据一起发送的修复符号的生成的调度。 在另一个实施例中,来自接收机的确认消息用于控制由修复符号提供的保护窗口的后沿。 在另一实施例中,来自接收机的非确认消息用于控制额外修复符号的生成。 在另一个实施例中,使用长度字段来避免在空中传输填充字节。 在另一个实施例中,符号辅助字段被附加到源符号以指示符号对齐所需的填充字节,从而避免空中的填充字节的传输。