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18 条记录 (耗时 0.037 秒)

    Method and system for providing multicast and broadcast service using scalable video coding
    7.
    发明授权
    Method and system for providing multicast and broadcast service using scalable video coding 有权
    使用可伸缩视频编码提供组播和广播业务的方法和系统

    公开(公告)号：US08611425B2

    公开(公告)日：2013-12-17

    申请号：US13304520

    申请日：2011-11-25

    申请人： Ju Heon Kim ,  Chung Gu Kang ,  Jin Woo Kim ,  Jin Su Jung ,  Yong In Choi

    发明人： Ju Heon Kim ,  Chung Gu Kang ,  Jin Woo Kim ,  Jin Su Jung ,  Yong In Choi

    IPC分类号： H04N7/12

    CPC分类号： H04N21/234327 ,  H04N21/6131 ,  H04N21/631 ,  H04N21/6405

    摘要： A method and system for efficiently transmitting data, to which scalable image coding has been applied over a single frequency network is provided. The system includes a control server which re-packetizes data packets, received from a multimedia server, into a scalable bit stream by separately encoding the data packets into a base layer and one or more enhancement layers, and at least one base station which adaptively multicasts and broadcasts the scalable bit stream, received from the control server, to a plurality of terminals located in the area of a cell. The at least one base station multicasts and broadcasts the base layer across the area of the cell, and adaptively transmits the one or more enhancement layers depending on channel status or terminal performance of the plurality of terminals.

    摘要翻译： 提供了一种用于有效地发送已经通过单个频率网络应用可伸缩图像编码的数据的方法和系统。 该系统包括控制服务器，其通过将数据分组分别编码为基本层和一个或多个增强层，将从多媒体服务器接收的数据分组重新分组成可缩放比特流，以及至少一个基站，其自适应地多播 并且将从控制服务器接收到的可缩放比特流广播到位于小区区域中的多个终端。 所述至少一个基站在所述小区的所述区域上多播和广播所述基本层，并且根据所述多个终端的信道状态或终端性能自适应地发送所述一个或多个增强层。

    METHOD OF BANDPASS SAMPLING USING SINGLE SIDEBAND CONVERTING
    8.
    发明申请
    METHOD OF BANDPASS SAMPLING USING SINGLE SIDEBAND CONVERTING 有权
    使用单侧转换的BDPD采样方法

    公开(公告)号：US20110110471A1

    公开(公告)日：2011-05-12

    申请号：US12711012

    申请日：2010-02-23

    申请人： Jinwoo Park ,  Chung Gu Kang

    发明人： Jinwoo Park ,  Chung Gu Kang

    IPC分类号： H04B1/10

    CPC分类号： H04B1/0032 ,  H04B1/0025

    摘要： The present invention provides a method of bandpass sampling which particularly includes the single-sideband signal conversion procedure prior to the sampling process in the purpose of lowering the required sampling frequency. Conversion of the bandpass RF signal into a single-sideband spectrum signal which has the spectrum components only in either the positive or the negative frequency domain is accomplished by bandpass-filtering, or more effectively by using a Hilbert transformer. This invention includes a method of finding the minimum sampling frequency for simultaneous frequency down-conversion of multiple RF bandpass signals. It is expected from this invention that the components additionally required in the RF receiver due to the proposed bandpass sampling method is the bandpass filters or the Hilbert transformer for single-sideband conversion, but the benefits from this invention could be the reduced ADC speed performance and the subsequent digital processing load in the receiver system because of the reduced data rates.

    摘要翻译： 本发明提供了一种带通采样方法，其特征在于包括采样过程之前的单边带信号转换过程，以降低所需的采样频率。 通过带通滤波，或更有效地通过使用希尔伯特变换器，将带通RF信号转换成仅具有正或负频域中的频谱分量的单边带频谱信号。 本发明包括找到多个RF带通信号的同时下变频的最小采样频率的方法。 从本发明预期，由于所提出的带通采样方法，RF接收机中另外需要的组件是用于单边带转换的带通滤波器或希尔伯特变换器，但是本发明的益处可以是降低的ADC速度性能和 随后的数字处理负载在接收机系统中由于数据速率的降低。

    Method and apparatus for allocating radio resource in wireless sensor network
    10.
    发明授权
    Method and apparatus for allocating radio resource in wireless sensor network 有权
    在无线传感器网络中分配无线电资源的方法和装置

    公开(公告)号：US08200234B2

    公开(公告)日：2012-06-12

    申请号：US11822473

    申请日：2007-07-06

    申请人： Paul Barom Jeon ,  Jun Hyeong Kim ,  Sang Do Park ,  Sun Shin An ,  Won Keun Kong ,  Chung Gu Kang ,  Sung Min Kang ,  II Whan Kim

    发明人： Paul Barom Jeon ,  Jun Hyeong Kim ,  Sang Do Park ,  Sun Shin An ,  Won Keun Kong ,  Chung Gu Kang ,  Sung Min Kang ,  II Whan Kim

    IPC分类号： H04Q7/20

    CPC分类号： H04W72/10 ,  H04L67/12 ,  H04W84/18

    摘要： A method and apparatus for allocating a radio resource in a wireless sensor network are provided, in which a signal requesting a radio resource allocation is received from any one of sensors included in the wireless sensor network, an amount of remaining energy is compared with respect to each zone where a sensor transmitting the signal is included, an order of zones, from a zone comprising a greatest amount of remaining energy to a zone having a least amount of remaining energy, is determined as a result of the comparison, and a time slot is allocated to a sensor of each zone according to the determined order of zones, when transmitting a frame for the radio resource allocation.

    摘要翻译： 提供了一种在无线传感器网络中分配无线电资源的方法和装置，其中从无线传感器网络中包括的传感器中的任何一个接收到请求无线电资源分配的信号，将剩余能量相对于 作为比较的结果，确定包含发送信号的传感器的每个区域，从包括最大剩余能量的区域到具有最小剩余能量的区域的区域的顺序被确定，并且时隙 当发送用于无线电资源分配的帧时，根据确定的区域顺序将其分配给每个区域的传感器。