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1. 发明授权

US07411908B2 Method and system for network emulation using bandwidth emulation techniques 有权
标题翻译：使用带宽仿真技术进行网络仿真的方法和系统
公开(公告)号：US07411908B2
公开(公告)日：2008-08-12
申请号：US10955812
申请日：2004-09-30
申请人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
发明人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
IPC分类号： G01R31/08
CPC分类号： H04L47/30 , H04L47/10 , H04L47/28 , H04L47/50 , H04L47/56
摘要： A method and system for emulating a network bandwidth condition includes maintaining a queue for holding packets that are received, maintaining a virtual time that is updated whenever a packet timer is scheduled, and, for a selected packet waiting in the queue, calculating a timer expiration time based on the virtual time. A bandwidth emulation module is controlled by an emulator link that comprises a virtual network link to which a first computer is connected. One or more computers may be linked to the first computer.
摘要翻译：一种用于模拟网络带宽状况的方法和系统包括维护用于保持接收的分组的队列，保持每当分组定时器被调度时更新的虚拟时间，并且对于等待队列中的所选分组，计算定时器期满时间基于虚拟时间。带宽仿真模块由仿真器链路控制，该仿真器链路包括与第一计算机连接的虚拟网络链路。一个或多个计算机可以链接到第一计算机。

2. 发明授权

US07433814B2 Network emulator architecture 有权
标题翻译：网络仿真器架构
公开(公告)号：US07433814B2
公开(公告)日：2008-10-07
申请号：US10955993
申请日：2004-09-30
申请人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
发明人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
IPC分类号： G06F9/455
CPC分类号： H04L41/145 , G06F9/45537
摘要： A network emulator provides both per-connection and non-connection-based emulation. The emulator includes a host computer, and a kernel-mode emulator driver and user-mode application component running on the host computer. The application component supplies configuration parameters to the driver. The driver includes a packet filter list that filters a captured packet, a virtual network link that receives the packet from the packet filter list, a link group list that applies an emulation procedure to the packet, a timer management component that manages a timer associated with the emulation procedure, and a packet dispatcher component that sends out the packet. A connection pool component facilitates per-connection emulation.
摘要翻译：网络仿真器提供基于每个连接和非连接的仿真。该仿真器包括主计算机，以及在主机上运行的内核模式仿真器驱动程序和用户模式应用程序组件。应用程序组件向驱动程序提供配置参数。驱动器包括过滤捕获的分组的分组过滤器列表，从分组过滤器列表接收分组的虚拟网络链路，对分组应用仿真过程的链路组列表，管理与仿真过程，以及发送数据包的数据包调度程序组件。连接池组件便于每个连接仿真。

3. 发明申请

US20060069544A1 Network emulator architecture 有权
标题翻译：网络仿真器架构
公开(公告)号：US20060069544A1
公开(公告)日：2006-03-30
申请号：US10955993
申请日：2004-09-30
申请人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
发明人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
IPC分类号： G06F9/455
CPC分类号： H04L41/145 , G06F9/45537
摘要： A network emulator provides both per-connection and non-connection-based emulation. The emulator includes a host computer, and a kernel-mode emulator driver and user-mode application component running on the host computer. The application component supplies configuration parameters to the driver. The driver includes a packet filter list that filters a captured packet, a virtual network link that receives the packet from the packet filter list, a link group list that applies an emulation procedure to the packet, a timer management component that manages a timer associated with the emulation procedure, and a packet dispatcher component that sends out the packet. A connection pool component facilitates per-connection emulation.
摘要翻译：网络仿真器提供基于每个连接和非连接的仿真。该仿真器包括主计算机，以及在主机上运行的内核模式仿真器驱动程序和用户模式应用程序组件。应用程序组件向驱动程序提供配置参数。驱动器包括过滤捕获的分组的分组过滤器列表，从分组过滤器列表接收分组的虚拟网络链路，对分组应用仿真过程的链路组列表，管理与仿真过程，以及发送数据包的数据包调度程序组件。连接池组件便于每个连接仿真。

4. 发明申请

US20060067351A1 Method and system for network emulation using bandwidth emulation techniques 有权
标题翻译：使用带宽仿真技术进行网络仿真的方法和系统
公开(公告)号：US20060067351A1
公开(公告)日：2006-03-30
申请号：US10955812
申请日：2004-09-30
申请人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
发明人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
IPC分类号： H04L12/54
CPC分类号： H04L47/30 , H04L47/10 , H04L47/28 , H04L47/50 , H04L47/56
摘要： A method and system for emulating a network bandwidth condition includes maintaining a queue for holding packets that are received, maintaining a virtual time that is updated whenever a packet timer is scheduled, and, for a selected packet waiting in the queue, calculating a timer expiration time based on the virtual time. A bandwidth emulation module is controlled by an emulator link that comprises a virtual network link to which a first computer is connected. One or more computers may be linked to the first computer.
摘要翻译：一种用于模拟网络带宽状况的方法和系统包括维护用于保持接收的分组的队列，保持每当分组定时器被调度时更新的虚拟时间，并且对于等待队列中的所选分组，计算定时器期满时间基于虚拟时间。带宽仿真模块由仿真器链路控制，该仿真器链路包括与第一计算机连接的虚拟网络链路。一个或多个计算机可以链接到第一计算机。

5. 发明授权

US07339899B2 Method and system for network emulation using packet reorder emulation techniques 有权
标题翻译：使用分组重排序仿真技术进行网络仿真的方法和系统
公开(公告)号：US07339899B2
公开(公告)日：2008-03-04
申请号：US10955578
申请日：2004-09-30
申请人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
发明人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
IPC分类号： H04L12/26
CPC分类号： H04L41/145 , H04L41/0803
摘要： Emulating a packet reorder condition in a network includes maintaining a counter variable to count packets sent out since the most recent reordered packet. When a new packet arrives, if the counter variable is less than or equal to zero, a current packet lag value is determined. If the current packet lag value is not equal to zero, the new packet is delayed before being sent out in accordance with the lag value, and the counter is updated with the lag value. Otherwise, the new packet is sent out without delay and the counter is decreased by one. The current packet lag value is computed based on supplied configuration parameters. Delaying the new packet includes applying a latency to the packet, the latency comprising a time cost to transmit the packet multiplied by the current packet lag value.
摘要翻译：仿真网络中的分组重排条件包括维持计数器变量来计算自最近重新排序的分组以来发送的分组。当新分组到达时，如果计数器变量小于或等于零，则确定当前分组滞后值。如果当前分组滞后值不等于零，则根据滞后值发送新分组之前被延迟，并且用滞后值更新计数器。否则，新的数据包被发送出没有延迟，计数器减1。根据提供的配置参数计算当前数据包滞后值。延迟新分组包括对分组应用等待时间，等待时间包括传送分组乘以当前分组滞后值的时间成本。

6. 发明申请

US20060072628A1 Method and system for network emulation using packet reorder emulation techniques 有权
标题翻译：使用分组重排序仿真技术进行网络仿真的方法和系统
公开(公告)号：US20060072628A1
公开(公告)日：2006-04-06
申请号：US10955578
申请日：2004-09-30
申请人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
发明人： Yunxin Liu , Zheng Ni , Jian Wang , Qian Zhang , Wenwu Zhu
IPC分类号： H04J3/06
CPC分类号： H04L41/145 , H04L41/0803
摘要： Emulating a packet reorder condition in a network includes maintaining a counter variable to count packets sent out since the most recent reordered packet. When a new packet arrives, if the counter variable is less than or equal to zero, a current packet lag value is determined. If the current packet lag value is not equal to zero, the new packet is delayed before being sent out in accordance with the lag value, and the counter is updated with the lag value. Otherwise, the new packet is sent out without delay and the counter is decreased by one. The current packet lag value is computed based on supplied configuration parameters. Delaying the new packet includes applying a latency to the packet, the latency comprising a time cost to transmit the packet multiplied by the current packet lag value.
摘要翻译：仿真网络中的分组重排条件包括维持计数器变量来计算自最近重新排序的分组以来发送的分组。当新分组到达时，如果计数器变量小于或等于零，则确定当前分组滞后值。如果当前分组滞后值不等于零，则根据滞后值发送新分组之前被延迟，并且用滞后值更新计数器。否则，新的数据包被发送出没有延迟，计数器减1。根据提供的配置参数计算当前数据包滞后值。延迟新分组包括对分组应用等待时间，延迟包括传送分组乘以当前分组滞后值的时间成本。

7. 发明申请

US20060072466A1 Method and system for network emulation 失效
公开(公告)号：US20060072466A1
公开(公告)日：2006-04-06
申请号：US10951985
申请日：2004-09-28
申请人： Jian Wang , Zheng Ni , Marco Piumatti , Ramakrishnan Peruvemba , James Boldman , Ivan Davtchev
发明人： Jian Wang , Zheng Ni , Marco Piumatti , Ramakrishnan Peruvemba , James Boldman , Ivan Davtchev
IPC分类号： H04L12/26
CPC分类号： H04L41/145 , H04L29/08846 , H04L41/0803 , H04L67/28 , H04L69/14
摘要： A system and method for emulation of a network link include an application programming interface (API) for testing distributed applications by way of a network emulator. According to aspects of the invention, a method and computer program product are disclosed for providing an interface to a user application for configuring a network emulator. According to another aspect of the invention, a system for configuring a network emulator by way of a user application is provided. The API includes exposed functions for creating a virtual channel, creating a virtual link in the virtual channel, deleting the virtual channel, deleting the virtual link, obtaining trace data, obtaining a packet filter for the virtual channel, obtaining a link rule and the number of instances of the virtual link, initializing the emulator, modifying the virtual channel, modifying the virtual link, setting trace information for the emulator, shutting down the emulator, and stopping the emulation.

8. 发明授权

US07555420B2 Method and system for network emulation 失效
标题翻译：网络仿真方法与系统
公开(公告)号：US07555420B2
公开(公告)日：2009-06-30
申请号：US10951985
申请日：2004-09-28
申请人： Jian Wang , Zheng Ni , Marco Piumatti , Ramakrishnan L. Peruvemba , James R. Boldman , Ivan Davtchev
发明人： Jian Wang , Zheng Ni , Marco Piumatti , Ramakrishnan L. Peruvemba , James R. Boldman , Ivan Davtchev
IPC分类号： G06F9/455
CPC分类号： H04L41/145 , H04L29/08846 , H04L41/0803 , H04L67/28 , H04L69/14
摘要： A system and method for emulation of a network link include an application programming interface (API) for testing distributed applications by way of a network emulator. According to aspects of the invention, a method and computer program product are disclosed for providing an interface to a user application for configuring a network emulator. According to another aspect of the invention, a system for configuring a network emulator by way of a user application is provided. The API includes exposed functions for creating a virtual channel, creating a virtual link in the virtual channel, deleting the virtual channel, deleting the virtual link, obtaining trace data, obtaining a packet filter for the virtual channel, obtaining a link rule and the number of instances of the virtual link, initializing the emulator, modifying the virtual channel, modifying the virtual link, setting trace information for the emulator, shutting down the emulator, and stopping the emulation.
摘要翻译：用于仿真网络链路的系统和方法包括用于通过网络仿真器测试分布式应用的应用程序编程接口（API）。根据本发明的方面，公开了一种用于向用户应用提供用于配置网络仿真器的接口的方法和计算机程序产品。根据本发明的另一方面，提供了一种用于通过用户应用配置网络仿真器的系统。该API包括用于创建虚拟通道的公开功能，在虚拟通道中创建虚拟链路，删除虚拟通道，删除虚拟链路，获取跟踪数据，获取虚拟通道的数据包过滤器，获取链接规则和数字虚拟链路的实例，初始化仿真器，修改虚拟通道，修改虚拟链路，设置仿真器的跟踪信息，关闭仿真器以及停止仿真。

9. 发明申请

US20070201751A1 Block-Based Fast Image Compression 有权
标题翻译：基于块的快速图像压缩
公开(公告)号：US20070201751A1
公开(公告)日：2007-08-30
申请号：US11276342
申请日：2006-02-24
申请人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
发明人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
IPC分类号： G06K9/36
CPC分类号： G06K9/00456 , H04N19/12 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/149 , H04N19/176 , H04N19/19 , H04N19/196
摘要： Systems and methods for block-based fast image compression are described. In one aspect, a digital image is segmented into multiple blocks. A respective set of statistical characteristics is identified for each of the segmented blocks. Each of the blocks is encoded with a particular encoding algorithm of multiple encoding algorithms. The particular encoding algorithm that is used to encode a particular block segmented from the digital image is selected to efficiently encode the block in view of statistical characteristics associated with the block. Thus, blocks of different block types may be encoded with different encoding algorithms.
摘要翻译：描述了基于块的快速图像压缩的系统和方法。在一个方面，数字图像被分割成多个块。针对每个分段块识别相应的一组统计特性。每个块都用多种编码算法的特定编码算法进行编码。选择用于编码从数字图像分割的特定块的特定编码算法，以便考虑到与块相关联的统计特性来有效地对块进行编码。因此，不同块类型的块可以用不同的编码算法进行编码。

10. 发明授权

US07668382B2 Block-based fast image compression 有权
标题翻译：基于块的快速图像压缩
公开(公告)号：US07668382B2
公开(公告)日：2010-02-23
申请号：US11276342
申请日：2006-02-24
申请人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
发明人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
IPC分类号： G06K9/36
CPC分类号： G06K9/00456 , H04N19/12 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/149 , H04N19/176 , H04N19/19 , H04N19/196
摘要： Systems and methods for block-based fast image compression are described. In one aspect, a digital image is segmented into multiple blocks. A respective set of statistical characteristics is identified for each of the segmented blocks. Each of the blocks is encoded with a particular encoding algorithm of multiple encoding algorithms. The particular encoding algorithm that is used to encode a particular block segmented from the digital image is selected to efficiently encode the block in view of statistical characteristics associated with the block. Thus, blocks of different block types may be encoded with different encoding algorithms.
摘要翻译：描述了基于块的快速图像压缩的系统和方法。在一个方面，数字图像被分割成多个块。针对每个分段块识别相应的一组统计特性。每个块都用多种编码算法的特定编码算法进行编码。选择用于编码从数字图像分割的特定块的特定编码算法，以便考虑到与块相关联的统计特性来有效地编码块。因此，不同块类型的块可以用不同的编码算法进行编码。

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