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    • 11. 发明授权
    • System and method for transmission control protocol slow-start
    • 传输控制协议的启动系统和方法
    • US09178789B2
    • 2015-11-03
    • US13340354
    • 2011-12-29
    • Yan ZhangNirwan AnsariMingquan WuHong Heather Yu
    • Yan ZhangNirwan AnsariMingquan WuHong Heather Yu
    • G01R31/08H04L12/26H04L12/807H04L12/801H04L12/841
    • H04L43/0882H04L43/16H04L47/193H04L47/27H04L47/283H04L47/29
    • An embodiment of a system and method that uses inline measurements to probe available bandwidth for a transmission control protocol, and adaptively sets a slow-start threshold according to the available bandwidth. The method includes initializing a congestion window “cwnd,” sending cwnd packets, estimating an available bandwidth for the cwnd packets. The congestion window cwnd is set to a higher number, and the higher number of further packets is sent if the available bandwidth is greater than a first threshold level. The available bandwidth is re-estimated for the higher number of the further packets, and a soft start threshold “ssthresh” is set to the re-estimated available bandwidth. A statistical measure is calculated for the re-estimated available bandwidth, and the congestion window cwnd is set equal to ssthresh if a ratio of the statistical measure to the re-estimated available bandwidth is less than a second threshold level.
    • 使用在线测量来探测传输控制协议的可用带宽的系统和方法的实施例,并且根据可用带宽自适应地设置慢启动阈值。 该方法包括初始化拥塞窗口“cwnd”,发送cwnd数据包,估计cwnd数据包的可用带宽。 拥塞窗口cwnd被设置为更高的数量,并且如果可用带宽大于第一阈值水平,则发送更多数量的另外的分组。 对于更多数量的另外的分组重新估计可用带宽,并且将软启动阈值“ssthresh”设置为重新估计的可用带宽。 对于重新估计的可用带宽计算统计度量,并且如果统计度量与重新估计的可用带宽的比率小于第二阈值水平,则将拥塞窗口cwnd设置为等于ssthresh。
    • 15. 发明授权
    • Printable automatic paper belt-rolling reader (PB reader)
    • 可打印自动纸带滚动阅读器(PB读卡器)
    • US08764328B2
    • 2014-07-01
    • US13066427
    • 2011-04-14
    • Yan ZhangTianlan Zhang
    • Yan ZhangTianlan Zhang
    • B41J15/16
    • B41J15/044B41J3/44B41J11/002
    • The PB Reader solves the problem that the e-reader presents: the e-reader has a non-paper screen and printed documents need assembly, binding, and page turning via hands.This is an electronic, mechanical device that can quickly search, review and print documents and that has text-to-speech and remote control functionality. The unit is rectangular in shape similar as a traditional book, including a viewing window for reading and printing. The unit is fed by two paper-belt rollers, across which images and printed text are displayed. The two paper-belt rolls, which are held by two square axles that are driven by the stepping motor through multiple reduction gears. A pattern of round dots is printed on the bottom side of the paper belt, which can be decoded by a photoelectric sensor to take action of reeling pages. The signals control the stepper motor, allowing the reader to reel the page forward or backward, or jump directly to a specific position.The second component of this invention is the designated printer. Its body shape is rectangular. The said printer can print any text files and photos from a computer directly onto the blank paper belt in the PB Reader by means of sensing the code on the paper belt. This way, electronic files are transformed into physical paper files that are readable by the invention to ensure quick search, review and as well as safe storage.The invention also has a wireless remote control function, which will allow people who are disabled (or users who for whatever reasons do not have free use of their hands) to make use of the reader.
    • PB阅读器解决了电子阅读器提出的问题:电子阅读器具有非纸张屏幕,打印的文档需要手动装配,装订和翻页。 这是一种电子的机械设备,可以快速搜索,查看和打印文档,并具有文本到语音和远程控制功能。 该单元是与传统书籍相似的矩形,包括用于阅读和打印的观看窗口。 该单元由两个纸带辊馈送,图像和打印文本显示在其上。 两个纸带辊由两个方形轴保持,该两个方形轴由步进电机通过多个减速齿轮驱动。 在纸带底部印有圆点图案,可通过光电传感器对其进行解码,从而卷取纸页。 信号控制步进电机,允许读取器向前或向后卷取页面,或直接跳转到特定位置。 本发明的第二部分是指定的打印机。 它的身体形状是矩形的。 所述打印机可以通过感测纸带上的代码,将来自计算机的任何文本文件和照片直接打印到PB读卡器中的空白纸带上。 这样,电子文件被转换成本发明可读的物理纸文件,以确保快速搜索,检查和安全存储。 本发明还具有无线遥控功能,其将允许被禁用的人(或由于任何原因不能自由使用的用户)使用读取器。
    • 17. 发明授权
    • Hierarchical energy optimization for datacenter networks
    • 数据中心网络的分层能量优化
    • US08700928B2
    • 2014-04-15
    • US13819267
    • 2012-05-21
    • Nirwan AnsariYan Zhang
    • Nirwan AnsariYan Zhang
    • G06F1/00G06F1/26G06F1/32G06F15/173H04L12/28
    • G06F1/32G06F1/26G06F1/3203G06F1/3278G06F1/3287Y02D10/157Y02D10/171
    • Technologies are presented for power optimization of datacenter networks in a hierarchical perspective. In some examples, a two-level power optimization model may be established to reduce the power consumption of datacenter networks by switching off network switches and links while still guaranteeing full connectivity and maximum link utilization. The model may be implemented by solving a capacitated constraint multi-commodity flow (CMCF) problem employing simple heuristic techniques. A power status of network switches may be determined according to a network traffic matrix and the CMCF optimization determined at core-level and at pod-level. A complementary process to provision whole network connectivity and to meet quality of service (QoS) goals may also be performed.
    • 针对数据中心网络的功能优化技术进行了分层分析。 在一些示例中,可以建立两级功率优化模型,以通过关闭网络交换机和链路来减少数据中心网络的功耗,同时仍然保证完全连接和最大链路利用率。 该模型可以通过使用简单的启发式技术来求解容许约束多商品流(CMCF)问题来实现。 网络交换机的电源状态可以根据网络流量矩阵确定,CMCF优化在核心级别和pod级确定。 也可以执行提供整个网络连接和满足服务质量(QoS)目标的补充过程。
    • 19. 发明授权
    • Method and apparatus for transmitting data
    • 用于传输数据的方法和装置
    • US08611264B2
    • 2013-12-17
    • US11968531
    • 2008-01-02
    • Yan Zhang
    • Yan Zhang
    • G08C17/00
    • H04W52/0216H04W72/005Y02D70/00
    • A method for transmitting data includes: acquiring a Multicast and Broadcast Service Mapping Information Element (MBS_MAP_IE) and MBS data corresponding to the MBS_MAP_IE; wherein the MBS_MAP_IE carries a parameter for indicating the frame position of the next MBS_MAP_IE; setting a sleep duration according to the parameter for indicating the frame position of the next MBS_MAP_IE; and acquiring the next MBS_MAP_IE and MBS data corresponding to the next MBS_MAP_IE when the sleep duration expires. By applying the present invention, it is unnecessary for a mobile terminal to receive an MBS mapping message, so that the sleep duration of the mobile terminal is increased and thus the power consumption of the mobile terminal is reduced.
    • 一种用于发送数据的方法包括:获取与MBS_MAP_IE对应的多播和广播服务映射信息元素(MBS_MAP_IE)和MBS数据; 其中所述MBS_MAP_IE携带用于指示下一MBS_MAP_IE的帧位置的参数; 根据用于指示下一个MBS_MAP_IE的帧位置的参数来设置睡眠持续时间; 并且当睡眠持续时间到期时,获取对应于下一个MBS_MAP_IE的下一个MBS_MAP_IE和MBS数据。 通过应用本发明,移动终端无需接收MBS映射消息,使得移动终端的睡眠持续时间增加,从而降低了移动终端的功耗。