公开(公告)号：US20130044595A1

公开(公告)日：2013-02-21

申请号：US13340027

申请日：2011-12-29

申请人： Tao Han ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

发明人： Tao Han ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

IPC分类号： H04W28/02 ,  H04W24/00

CPC分类号： H04W28/0242 ,  H04L47/27 ,  H04L47/30

摘要： A method for delivering packets in a wireless communications system includes determining a cause of loss for a previously transmitted packet based on a packet acknowledgement corresponding to the previously transmitted packet, the packet acknowledgement including at least one of a wireless loss indicator and a congestion warning indicator for the wireless communications system. The method also includes adjusting a transmission parameter in a packet transmission protocol according to the cause of loss, and retransmitting the previously transmitted packet.

摘要翻译： 一种用于在无线通信系统中传送分组的方法包括基于与先前发送的分组相对应的分组确认来确定先前发送的分组的丢失的原因，分组确认包括无线丢失指示符和拥塞警告指示符中的至少一个 用于无线通信系统。 该方法还包括根据丢失的原因调整分组传输协议中的传输参数，并重传先前发送的分组。

公开(公告)号：US08159952B2

公开(公告)日：2012-04-17

申请号：US12368516

申请日：2009-02-10

申请人： Nirwan Ansari ,  Ehsan Haghani

发明人： Nirwan Ansari ,  Ehsan Haghani

IPC分类号： H04W4/00

CPC分类号： H04W72/0413 ,  H04W28/20 ,  H04W72/0453 ,  H04W72/12

摘要： Techniques of scheduling data packets are disclosed. For example, such data packet scheduling techniques may be employed to schedule data packets on wired and/or wireless networks. An example embodiment includes techniques for scheduling voice-over-Internet protocol data packets transmitted between a base station and a subscriber station on a WiMAX network.

摘要翻译： 公开了调度数据包的技术。 例如，可以采用这样的数据分组调度技术来调度有线和/或无线网络上的数据分组。 示例性实施例包括用于在WiMAX网络上调度在基站和用户站之间传输的因特网上协议数据分组的技术。

公开(公告)号：US20100254271A1

公开(公告)日：2010-10-07

申请号：US12418681

申请日：2009-04-06

申请人： Nirwan Ansari ,  Si Yin

发明人： Nirwan Ansari ,  Si Yin

IPC分类号： H04L12/28 ,  H04J3/26 ,  H04L12/56 ,  H04L12/26

CPC分类号： H04Q11/0067 ,  H04Q2011/0064

摘要： Techniques for managing resources in a point-to-multipoint (P2MP) network are disclosed. In some examples, a root station is adapted to transmit and receive network packets and leaf stations are adapted to transmit and receive the network packets from the root station. An electrical control system can be adapted to adjust a control error toward a zero value and adjust an output toward a steady state. The electrical control system may include feedback to control the root station based, at least in part, on the output of the electrical control system.

摘要翻译： 公开了用于管理点对多点（P2MP）网络中的资源的技术。 在一些示例中，根站适于发送和接收网络分组，并且叶站适于从根站发送和接收网络分组。 电气控制系统可以适于将控制误差调整到零值，并将输出调整到稳定状态。 至少部分地基于电气控制系统的输出，电气控制系统可以包括用于控制根站的反馈。

公开(公告)号：US20130124753A1

公开(公告)日：2013-05-16

申请号：US13297101

申请日：2011-11-15

申请人： Nirwan Ansari ,  Yan Zhang

发明人： Nirwan Ansari ,  Yan Zhang

IPC分类号： G06F15/16

CPC分类号： H04L47/263 ,  H04L47/30 ,  Y02D50/10

摘要： Technologies are generally described for an enhanced Quantized Congestion Notification (QCN) congestion control approach, referred to as Fair QCN (FQCN) for enhancing fairness of multiple flows sharing link capacity in a high bandwidth, low latency data center network. QCN messages may be fed back to flow sources (e.g., servers) which send packets with a sending rate over their share of the bottleneck link capacity. By enabling the flow sources to regulate their data traffic based on the QCN messages from a congestion control component, the queue length at the bottleneck link may converge to an equilibrium queue length rapidly and TCP throughput performance may be enhanced substantially in a TCP incast circumstance.

摘要翻译： 技术通常被描述用于增强的量化拥塞通知（QCN）拥塞控制方法，称为公平QCN（FQCN），用于增强在高带宽，低延迟数据中心网络中共享链路容量的多个流的公平性。 QCN消息可以被反馈到以发送速率超过其瓶颈链路容量的份额发送分组的流源（例如，服务器）。 通过使流量源能够根据来自拥塞控制组件的QCN消息来调节其数据流量，瓶颈链路上的队列长度可以快速收敛到平衡队列长度，并且TCP吞吐量性能可能在TCP恶劣情况下显着提高。

公开(公告)号：US08351786B2

公开(公告)日：2013-01-08

申请号：US12723578

申请日：2010-03-12

申请人： Nirwan Ansari ,  Jingjing Zhang

发明人： Nirwan Ansari ,  Jingjing Zhang

IPC分类号： H04B10/20 ,  H04J14/00

CPC分类号： H04J14/0282 ,  H04J14/0247 ,  H04J14/0252 ,  H04L41/0896 ,  H04L41/22 ,  H04Q11/0067 ,  H04Q2011/0086

摘要： Technologies are generally described for substantially maximizing capacity in a wavelength division multiplexing (WDM) passive optical network (PON). An “achievable rate region” may be defined as a set containing admissible traffic rates of a given WDM PON system such that a volume of an achievable rate region is proportional to a capacity of the network. Deriving the achievable rate region for a particular network, decisions may be made whether incoming traffic rate can or cannot be achieved for that network. Moreover, the achievable rate region may be used to construct a WDM PON utilizing a minimum number of wavelengths, a minimum number of lasers with narrowest tuning ranges, and a minimum number of receivers, thereby reducing a capital expenditure in building the PON system.

摘要翻译： 通常描述技术用于在波分复用（WDM）无源光网络（PON）中实质上最大化容量。 可实现速率区域可以被定义为包含给定WDM PON系统的允许业务速率的集合，使得可实现速率区域的容积与网络的容量成比例。 为特定网络导出可达到的速率区域，可以决定是否可以为该网络实现传入流量速率。 此外，可实现的速率区域可以用于利用最小数量的波长，最小调谐范围的最小数量的激光器和最小数量的接收机来构造WDM PON，从而减少构建PON系统的资本支出。

公开(公告)号：US08040802B2

公开(公告)日：2011-10-18

申请号：US12013587

申请日：2008-01-14

申请人： Nirwan Ansari ,  Shupeng Li ,  Ashok N. Rudrapatna

发明人： Nirwan Ansari ,  Shupeng Li ,  Ashok N. Rudrapatna

IPC分类号： H04L12/26

CPC分类号： H04L47/10 ,  H04L47/11 ,  H04L47/12 ,  H04L47/14 ,  H04L47/263 ,  H04L47/27 ,  H04L47/30 ,  H04W28/12

摘要： An exemplary method of controlling communications includes determining a total congestion window size for a router device. An allocation of at least a portion of the determined total congestion window size to allocated at least one mobile station that communicates with the router device over a wireless link is determined based on the determined total congestion window size. The determined allocation is then reported to a source of a communication intended for the at least one mobile station.

摘要翻译： 控制通信的示例性方法包括确定路由器设备的总拥塞窗口大小。 基于所确定的总拥塞窗口大小来确定经确定的总拥塞窗口大小的至少一部分的分配到经由无线链路与路由器设备通信的分配的至少一个移动站。 所确定的分配然后被报告给旨在用于至少一个移动站的通信的源。

公开(公告)号：US20110211834A1

公开(公告)日：2011-09-01

申请号：US12996772

申请日：2010-08-13

申请人： Nirwan Ansari ,  Jingjing Zhang

发明人： Nirwan Ansari ,  Jingjing Zhang

IPC分类号： H04J14/00

CPC分类号： H04J14/0282

摘要： Technologies are generally described for network traffic scheduling in a wavelength division multiplexing (WDM) passive optical network (PON). Dynamic wavelength assignment and time allocation in hybrid WDM/TDM PONs with tunable lasers as optical light generators is accomplished by mapping the scheduling into a multi-processor scheduling problem with wavelength channels as machines and ONU requests as jobs. Wavelengths may be considered as parallel identical machines. Taking laser tuning time into consideration preemptive and non-preemptive scheduling with the objective of minimizing the latest job completion time is computed employing a number of heuristic algorithms. The algorithms compute two extreme cases of zero and infinity laser tuning time, respectively. Using the results from these two extreme cases, the heuristic scheduling schemes for the case of arbitrary laser tuning time yield close average latest job completion times for both schedule types.

摘要翻译： 波分复用（WDM）无源光网络（PON）中的网络流量调度通常被描述。 通过将可调激光器作为光发生器的混合WDM / TDM PON中的动态波长分配和时间分配通过将作为机器和ONU请求的波长信道的调度映射到波长信道的多处理器调度问题中来实现。 波长可以被认为是平行相同的机器。 将激光调谐时间考虑在抢先和非抢占式调度中，以最小化最新作业完成时间为目标，采用多种启发式算法进行计算。 算法分别计算了零和无限激光调谐时间的两个极端情况。 使用这两种极端情况下的结果，针对任意激光调谐时间的启发式调度方案可以得到两种计划类型的近似平均最近的作业完成时间。

公开(公告)号：US07873997B2

公开(公告)日：2011-01-18

申请号：US11079453

申请日：2005-03-14

申请人： Andrey Belenky ,  Nirwan Ansari

发明人： Andrey Belenky ,  Nirwan Ansari

IPC分类号： H04L29/14

CPC分类号： H04L63/126 ,  H04L63/1441

摘要： The deterministic packet marking (DPM) method is based on marking packets with the partial address information of ingress interface only. The attack victim is able to recover the complete address(es) information after receiving several packets from a particular attacking host or hosts. The full path is not really essential for the traceback since it can be different for different packets for different reasons.

摘要翻译： 确定性分组标记（DPM）方法基于仅对入口接口的部分地址信息进行标记的报文。 攻击受害者能够在收到来自特定攻击主机或主机的几个数据包后恢复完整的地址信息。 完整路径对于追溯不是至关重要的，因为对于不同的数据包，由于不同的原因可能会有所不同。

公开(公告)号：US20100215361A1

公开(公告)日：2010-08-26

申请号：US12389909

申请日：2009-02-20

申请人： Nirwan Ansari ,  JingJing Zhang

发明人： Nirwan Ansari ,  JingJing Zhang

IPC分类号： H04B17/00

CPC分类号： H04B10/272 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/0286

摘要： Techniques for partitioning and/or combining at least a portion of an optical network tree including one or more array waveguide gratings (“AWGs”) and fibers in wavelength division multiplexing (“WDM”) passive optical networks (“PON”) with cascaded AWGs are disclosed. Example methods include deriving the optimal positions for the AWGs to minimize fiber cost and then determining the arrangement of cascaded AWGs to minimize the total cost of AWGs and fibers. Determining the arrangement of cascaded AWGs may include recursive partitioning followed by recursive combination. An example recursive partition-combination based algorithm for optimizing a tradeoff between the AWG cost and the fiber cost is disclosed.

摘要翻译： 用于分级和/或组合包括一个或多个阵列波导光栅（“AWG”）的光网络树的至少一部分和具有级联AWG的波分复用（“WDM”）无源光网络（“PON”）中的光纤的技术 被披露。 示例方法包括导出AWG的最佳位置以最小化光纤成本，然后确定级联AWG的布置，以最小化AWG和光纤的总成本。 确定级联AWG的布置可以包括递归分区，随后是递归组合。 公开了一种用于优化AWG成本和光纤成本之间权衡的递归分区组合算法的示例。

公开(公告)号：US20090089139A1

公开(公告)日：2009-04-02

申请号：US12201926

申请日：2008-08-29

申请人： Roberto Rojas-Cessa ,  Nirwan Ansari ,  Zhen Qin

发明人： Roberto Rojas-Cessa ,  Nirwan Ansari ,  Zhen Qin

IPC分类号： G06Q10/00

CPC分类号： G06Q10/0631 ,  H04L43/045 ,  H04L43/0811 ,  H04L43/0852 ,  H04L43/0858 ,  H04L43/0864 ,  H04L43/0882 ,  H04L43/10 ,  H04L43/50

摘要： A method of scheduling tasks for active network measurement includes identifying a first measurement task for measuring a first network parameter and a second measurement task for measuring a second network parameter. It is determined whether there is a conflict between the first measurement task and the second measurement task. A first execution time of the first measurement task and a second execution time of the second measurement task are also determined. A task schedule is generated based at least in part on the first execution time, the second execution time, and whether there is the conflict between the first measurement task and the second measurement task. The task schedule is further generated based at least in part on a color graph.

摘要翻译： 调度用于主动网络测量的任务的方法包括识别用于测量第一网络参数的第一测量任务和用于测量第二网络参数的第二测量任务。 确定第一测量任务和第二测量任务之间是否存在冲突。 还确定第一测量任务的第一执行时间和第二测量任务的第二执行时间。 至少部分地基于第一执行时间，第二执行时间以及第一测量任务和第二测量任务之间是否存在冲突来生成任务调度。 至少部分地基于颜色图来进一步生成任务计划。