公开(公告)号：US20080120081A1

公开(公告)日：2008-05-22

申请号：US11941186

申请日：2007-11-16

申请人： Karthikeyan CHANDRASHEKAR ,  Alain J. Cohen ,  Paul M. Janes ,  David Boyd ,  Stefan Znam ,  Pradeep Singh

发明人： Karthikeyan CHANDRASHEKAR ,  Alain J. Cohen ,  Paul M. Janes ,  David Boyd ,  Stefan Znam ,  Pradeep Singh

IPC分类号： G06G7/50

CPC分类号： H04L41/145 ,  H04L41/0896 ,  H04L41/22

摘要： In a network that includes static bandwidth and dynamic bandwidth links, traffic flow at the OSI network layer is simulated at a traffic-flow level at interfaces to fixed bandwidth links, and simulated at a discrete-packet level at interfaces to dynamic bandwidth links. The resultant discrete-packet reception events at the receiving interface(s) of the dynamic bandwidth link are processed to determine the effective bandwidth/throughput of the link, as well as the allocation of this bandwidth among the individual flows through the link. The discrete-packet level receptions are used to reconstruct the parameters of the traffic flow at the network layer of the receiving interface, and this determined traffic flow is simulated accordingly at the next link, depending upon whether the next link is a static or dynamic bandwidth link.

摘要翻译： 在包含静态带宽和动态带宽链路的网络中，在固定带宽链路的接口处，在业务流级别模拟OSI网络层的流量，并在离散分组级别模拟动态带宽链路的接口。 在动态带宽链路的接收接口处的结果离散分组接收事件被处理以确定链路的有效带宽/吞吐量，以及通过链路在各个流中分配该带宽。 离散分组级接收用于重构接收接口的网络层的业务流的参数，根据下一个链路是静态带宽还是动态带宽，在下一个链路上相应地模拟确定的流量 链接。

公开(公告)号：US09253045B2

公开(公告)日：2016-02-02

申请号：US11941186

申请日：2007-11-16

申请人： Karthikeyan Chandrashekar ,  Alain J. Cohen ,  Paul M. Janes ,  David Boyd ,  Stefan Znam ,  Pradeep Singh

发明人： Karthikeyan Chandrashekar ,  Alain J. Cohen ,  Paul M. Janes ,  David Boyd ,  Stefan Znam ,  Pradeep Singh

IPC分类号： G06F17/50 ,  G06G7/62 ,  H04L12/24

CPC分类号： H04L41/145 ,  H04L41/0896 ,  H04L41/22

摘要： In a network that includes static bandwidth and dynamic bandwidth links, traffic flow at the OSI network layer is simulated at a traffic-flow level at interfaces to fixed bandwidth links, and simulated at a discrete-packet level at interfaces to dynamic bandwidth links. The resultant discrete-packet reception events at the receiving interface(s) of the dynamic bandwidth link are processed to determine the effective bandwidth/throughput of the link, as well as the allocation of this bandwidth among the individual flows through the link. The discrete-packet level receptions are used to reconstruct the parameters of the traffic flow at the network layer of the receiving interface, and this determined traffic flow is simulated accordingly at the next link, depending upon whether the next link is a static or dynamic bandwidth link.

摘要翻译： 在包含静态带宽和动态带宽链路的网络中，在固定带宽链路的接口处，在业务流级别模拟OSI网络层的流量，并在离散分组级别模拟动态带宽链路的接口。 在动态带宽链路的接收接口处的结果离散分组接收事件被处理以确定链路的有效带宽/吞吐量，以及通过链路在各个流中分配该带宽。 离散分组级接收用于重构接收接口的网络层的业务流的参数，根据下一个链路是静态带宽还是动态带宽，在下一个链路上相应地模拟确定的流量 链接。

公开(公告)号：US07219047B2

公开(公告)日：2007-05-15

申请号：US10112179

申请日：2002-03-28

申请人： Alain Cohen ,  Pradeep K. Singh ,  Arun Pasupathy ,  Stefan Znam

发明人： Alain Cohen ,  Pradeep K. Singh ,  Arun Pasupathy ,  Stefan Znam

IPC分类号： G06F17/50

CPC分类号： G06F17/5009 ,  H04L67/38

摘要： A sub-system is provided to a discrete event simulator (DES) to expedite simulation execution by first detecting a non-quiescent steady-state condition in the simulated system, and when the steady-state condition is detected, the simulator determines a state, and subsequently simulates the system at a skip-ahead time using this determined state, or a predicted state based on the determined state. Convergence analysis is used to determine whether the system is at, or approaching, a steady-state condition. This convergence skip-ahead process achieves faster analysis by avoiding the computation that would conventionally be required to simulate the system behavior during the time interval that is skipped.

摘要翻译： 将子系统提供给离散事件模拟器（DES），以通过首先检测模拟系统中的非静态稳态条件来加速模拟执行，并且当检测到稳态条件时，模拟器确定状态， 并且随后使用该确定的状态或基于所确定的状态的预测状态在跳过预测时间模拟系统。 收敛分析用于确定系统是处于或接近稳态条件。 这种汇聚跳过进程通过避免在跳过的时间间隔期间模拟系统行为通常需要的计算来实现更快的分析。

公开(公告)号：US07139692B2

公开(公告)日：2006-11-21

申请号：US10325148

申请日：2002-12-20

申请人： Alain Cohen ,  Pradeep K. Singh ,  Arun Pasupathy ,  Stefan Znam ,  Marius Popa

发明人： Alain Cohen ,  Pradeep K. Singh ,  Arun Pasupathy ,  Stefan Znam ,  Marius Popa

IPC分类号： G06F9/44

CPC分类号： H04L41/145

摘要： A method and system for flow propagation analysis uses ‘tracers’ that are iteratively propagated through a simulated network between source and destination elements. These tracers are structured to contain traffic flow information from source to destination, and to reflect changes as the flow is affected by each element along the path from source to destination. The resultant flow information at the destination corresponds to the effective throughput from the source to the destination, and the flow information at the output of each intermediate element in the network corresponds to the potentially achievable throughput through that element for the given source-to-destination flow.

摘要翻译： 用于流传播分析的方法和系统使用通过源和目标元素之间的模拟网络迭代地传播的“示踪物”。 这些跟踪器被构造成包含从源到目的地的流量信息，并且当流被源从源到目的地的路径的每个元素影响时反映改变。 目的地的结果流信息对应于从源到目的地的有效吞吐量，并且网络中的每个中间元素的输出处的流信息对应于通过该元素对于给定源到目的地的潜在可实现的吞吐量 流。