公开(公告)号：US08687530B2

公开(公告)日：2014-04-01

申请号：US12117756

申请日：2008-05-09

申请人： Chong Luo ,  Han Cheng Lu ,  Wei Pu ,  Feng Wu ,  Chang Wen Chen

发明人： Chong Luo ,  Han Cheng Lu ,  Wei Pu ,  Feng Wu ,  Chang Wen Chen

IPC分类号： H04B7/00 ,  H04B7/216

CPC分类号： H04W28/06 ,  H04B7/15521 ,  H04L47/50 ,  H04L49/90

摘要： Described is a technology by which a roadside-to-vehicle communication system may be implemented, including via a stateful scheduling with network coding scheme that enhances network capacity. Moving vehicles request and receive data from a roadside access points. Each of the access points operate a stateful scheduling algorithm that serves multiple vehicles by integrating network coding within a timeslot. In one aspect, the state of each vehicle's previously received and retained data is obtained, and used to enhance network capacity by combining as many packets as possible for multiple recipients in network coding.

摘要翻译： 描述了可以通过具有增强网络容量的网络编码方案的有状态调度来实现路边到车辆通信系统的技术。 移动车辆从路边接入点请求并接收数据。 每个接入点通过在时隙内集成网络编码来操作有状态调度算法，该算法为多个车辆提供服务。 在一个方面，获得每个车辆先前接收和保留的数据的状态，并且用于通过在网络编码中为多个接收者组合尽可能多的分组来增强网络容量。

公开(公告)号：US20090279462A1

公开(公告)日：2009-11-12

申请号：US12117756

申请日：2008-05-09

申请人： Chong Luo ,  Han Cheng Lu ,  Wei Pu ,  Feng Wu ,  Chang Wen Chen

发明人： Chong Luo ,  Han Cheng Lu ,  Wei Pu ,  Feng Wu ,  Chang Wen Chen

IPC分类号： H04B7/00

CPC分类号： H04W28/06 ,  H04B7/15521 ,  H04L47/50 ,  H04L49/90

摘要： Described is a technology by which a roadside-to-vehicle communication system may be implemented, including via a stateful scheduling with network coding scheme that enhances network capacity. Moving vehicles request and receive data from a roadside access points. Each of the access points operate a stateful scheduling algorithm that serves multiple vehicles by integrating network coding within a timeslot. In one aspect, the state of each vehicle's previously received and retained data is obtained, and used to enhance network capacity by combining as many packets as possible for multiple recipients in network coding.

摘要翻译： 描述了可以通过具有增强网络容量的网络编码方案的有状态调度来实现路边到车辆通信系统的技术。 移动车辆从路边接入点请求并接收数据。 每个接入点通过在时隙内集成网络编码来操作有状态调度算法，该算法为多个车辆提供服务。 在一个方面，获得每个车辆先前接收和保留的数据的状态，并且用于通过在网络编码中为多个接收者组合尽可能多的分组来增强网络容量。

公开(公告)号：US20090252146A1

公开(公告)日：2009-10-08

申请号：US12061661

申请日：2008-04-03

申请人： Chong Luo ,  Wei Pu ,  Feng Wu ,  Shipeng Li ,  Chang Wen Chen

发明人： Chong Luo ,  Wei Pu ,  Feng Wu ,  Shipeng Li ,  Chang Wen Chen

IPC分类号： H04L12/28

CPC分类号： H04B7/15521 ,  H03M13/1102 ,  H03M13/2906 ,  H03M13/3761 ,  H04L1/0057 ,  H04L1/0077 ,  H04L2001/0097

摘要： Described is continuous network coding, in which a relay sends probability data comprising a continuous number for use as parity data. The node receives streams of bits sent from sources towards a destination, and computes the probability data based on current noise data and/or fading data. A selected set of the bits (all or some subset thereof) are combined, e.g., XOR-ed or concatenated, and send to the destination. Phase modulation is performed to convey probability information based on the probability data. The destination demodulates the signal to obtain the probability information, and combines the probability information with the data directly received from sources to perform joint decoding. The number of bits in the set of selected bits may be adaptively chosen based on current channel conditions, e.g., increased when the channel conditions from the sources directly to a destination are poor relative to the channel conditions via the relay.

摘要翻译： 描述了连续网络编码，其中中继发送包括用作奇偶校验数据的连续数字的概率数据。 节点接收从源向目的地发送的比特流，并且基于当前噪声数据和/或衰落数据计算概率数据。 选择的一组位（其全部或某些子集）被组合，例如XOR编辑或级联，并发送到目的地。 执行相位调制以基于概率数据传送概率信息。 目的地解调信号以获得概率信息，并且将概率信息与从源直接接收的数据组合以执行联合解码。 可以基于当前信道条件来自适应地选择所选位组中的比特数，例如，当从源直接到目的地的信道条件相对于经由中继的信道条件差时，增加。

公开(公告)号：US20120121030A1

公开(公告)日：2012-05-17

申请号：US12945741

申请日：2010-11-12

申请人： Chong Luo ,  Kun Tan ,  Feng Wu ,  Hao Cui ,  Chang Wen Chen

发明人： Chong Luo ,  Kun Tan ,  Feng Wu ,  Hao Cui ,  Chang Wen Chen

IPC分类号： H04L5/12

CPC分类号： H04L27/3416 ,  H04L1/005 ,  H04L1/1812

摘要： A projection code is applied to encode symbols as weighted arithmetic sums of approximately random subsets of binary source bits. Pairs of the symbols are combined to form constellation points, which are sequentially mapped through a constellation to modulate a data signal.

摘要翻译： 应用投影码将符号编码为二进制源比特的近似随机子集的加权算术和。 这些符号的组合被组合以形成星座点，其通过星座顺序映射以调制数据信号。

公开(公告)号：US08971433B2

公开(公告)日：2015-03-03

申请号：US12945741

申请日：2010-11-12

申请人： Chong Luo ,  Kun Tan ,  Feng Wu ,  Hao Cui ,  Chang Wen Chen

发明人： Chong Luo ,  Kun Tan ,  Feng Wu ,  Hao Cui ,  Chang Wen Chen

IPC分类号： H04L5/12 ,  H04L27/34 ,  H04L1/00 ,  H04L1/18

CPC分类号： H04L27/3416 ,  H04L1/005 ,  H04L1/1812

摘要： A projection code is applied to encode symbols as weighted arithmetic sums of approximately random subsets of binary source bits. Pairs of the symbols are combined to form constellation points, which are sequentially mapped through a constellation to modulate a data signal.

摘要翻译： 应用投影码将符号编码为二进制源比特的近似随机子集的加权算术和。 这些符号的组合被组合以形成星座点，其通过星座顺序映射以调制数据信号。

公开(公告)号：US07953224B2

公开(公告)日：2011-05-31

申请号：US11419464

申请日：2006-05-19

申请人： Bin Zhu ,  Chang Wen Chen ,  Shipeng Li ,  Yang Yang

发明人： Bin Zhu ,  Chang Wen Chen ,  Shipeng Li ,  Yang Yang

IPC分类号： H04L9/00

CPC分类号： H04N7/1675 ,  H04N19/20 ,  H04N19/34 ,  H04N21/2347 ,  H04N21/8451

摘要： A method and system for encrypting a video compressed with MPEG-4 FGS compression with minimal overhead is provided. The encryption system encrypts the video into independently encrypted segments that can be either a video packet or a video block. When the encryption system encrypts based on video packets, it encrypts the data to ensure that the encrypted data does not emulate any video packet delimiting markers. When the encryption system encrypts based on video blocks, it encrypts the coded bitstream for each video block independently, from the most significant bitplane to the least significant bitplane, using either a stream or a block cipher. After all the video blocks are independently encrypted, the encryption system partitions the encrypted data into video packets and adds a buffering bit, if necessary, to prevent emulation of video packet delimiting markers. The encryption system may generate an initialization vector for each independently encrypted segment.

摘要翻译： 提供了一种用于以最小的开销加密以MPEG-4FGS压缩压缩的视频的方法和系统。 加密系统将视频加密成可以是视频分组或视频块的独立加密的分段。 当加密系统基于视频数据包进行加密时，它对数据进行加密，以确保加密的数据不会模拟任何视频数据包分隔标记。 当加密系统基于视频块加密时，它使用流或分组密码，从最高有效位平面到最低有效位平面，独立地加密每个视频块的编码位流。 在所有视频块被独立加密之后，加密系统将加密的数据分割成视频分组，并在必要时添加缓冲位以防止视频分组分隔标记的仿真。 加密系统可以为每个独立加密的段生成初始化向量。

公开(公告)号：US07023447B2

公开(公告)日：2006-04-04

申请号：US09847636

申请日：2001-05-02

申请人： Jiebo Luo ,  Yue Yu ,  Chang Wen Chen

发明人： Jiebo Luo ,  Yue Yu ,  Chang Wen Chen

IPC分类号： G09G5/00

CPC分类号： G06T11/001

摘要： A novel multi-resolution block sampling based texture analysis/synthesis algorithm. A reference texture is assumed to be sample from a probability function. The synthesis of a similar, but distinctive, synthetic texture is handled in a process and by an apparatus that first estimates and then resamples the probability function. In order to achieve good and fast estimation of the probability function for a reference texture and in order to retain the texel structural information during the synthesis, a novel concept of block sampling and a corresponding novel texture synthesis scheme based on multi-resolution block sampling is employed. As a result of this novel approach, the computational complexity of the present invention is much lower than that of other approaches to the problem. In addition, for textures that exhibit a high degree of directionality, a process, which integrates estimation of dominant texture direction and the synthesis algorithm is employed to handle directional textures. The dominant direction is used to orient and then control the synthesis process so as to preserve the dominant reference image direction.