公开(公告)号：US09456377B2

公开(公告)日：2016-09-27

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： H04J1/16 ,  H04W28/02 ,  H04L12/807 ,  H04L12/835

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：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：US20130044598A1

公开(公告)日：2013-02-21

申请号：US13340354

申请日：2011-12-29

申请人： Yan Zhang ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

发明人： Yan Zhang ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

IPC分类号： H04L12/26 ,  H04L12/24

CPC分类号： H04L43/0882 ,  H04L43/16 ,  H04L47/193 ,  H04L47/27 ,  H04L47/283 ,  H04L47/29

摘要： An embodiment of a system and method that uses inline measurements to probe available bandwidth for a transmission control protocol, and adaptively sets a slow-start threshold according to the available bandwidth. The method includes initializing a congestion window “cwnd,” sending cwnd packets, estimating an available bandwidth for the cwnd packets. The congestion window cwnd is set to a higher number, and the higher number of further packets is sent if the available bandwidth is greater than a first threshold level. The available bandwidth is re-estimated for the higher number of the further packets, and a soft start threshold “ssthresh” is set to the re-estimated available bandwidth. A statistical measure is calculated for the re-estimated available bandwidth, and the congestion window cwnd is set equal to ssthresh if a ratio of the statistical measure to the re-estimated available bandwidth is less than a second threshold level.

摘要翻译： 使用在线测量来探测传输控制协议的可用带宽的系统和方法的实施例，并且根据可用带宽自适应地设置慢启动阈值。 该方法包括初始化拥塞窗口cwnd，发送cwnd分组，估计cwnd分组的可用带宽。 拥塞窗口cwnd被设置为更高的数量，并且如果可用带宽大于第一阈值水平，则发送更多数量的另外的分组。 对于更多数量的其他分组重新估计可用带宽，并且将软启动阈值ssthresh设置为重新估计的可用带宽。 对于重新估计的可用带宽计算统计度量，并且如果统计度量与重新估计的可用带宽的比率小于第二阈值水平，则将拥塞窗口cwnd设置为等于ssthresh。

公开(公告)号：US09178789B2

公开(公告)日：2015-11-03

申请号：US13340354

申请日：2011-12-29

申请人： Yan Zhang ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

发明人： Yan Zhang ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

IPC分类号： G01R31/08 ,  H04L12/26 ,  H04L12/807 ,  H04L12/801 ,  H04L12/841

CPC分类号： H04L43/0882 ,  H04L43/16 ,  H04L47/193 ,  H04L47/27 ,  H04L47/283 ,  H04L47/29

摘要： An embodiment of a system and method that uses inline measurements to probe available bandwidth for a transmission control protocol, and adaptively sets a slow-start threshold according to the available bandwidth. The method includes initializing a congestion window “cwnd,” sending cwnd packets, estimating an available bandwidth for the cwnd packets. The congestion window cwnd is set to a higher number, and the higher number of further packets is sent if the available bandwidth is greater than a first threshold level. The available bandwidth is re-estimated for the higher number of the further packets, and a soft start threshold “ssthresh” is set to the re-estimated available bandwidth. A statistical measure is calculated for the re-estimated available bandwidth, and the congestion window cwnd is set equal to ssthresh if a ratio of the statistical measure to the re-estimated available bandwidth is less than a second threshold level.

摘要翻译： 使用在线测量来探测传输控制协议的可用带宽的系统和方法的实施例，并且根据可用带宽自适应地设置慢启动阈值。 该方法包括初始化拥塞窗口“cwnd”，发送cwnd数据包，估计cwnd数据包的可用带宽。 拥塞窗口cwnd被设置为更高的数量，并且如果可用带宽大于第一阈值水平，则发送更多数量的另外的分组。 对于更多数量的另外的分组重新估计可用带宽，并且将软启动阈值“ssthresh”设置为重新估计的可用带宽。 对于重新估计的可用带宽计算统计度量，并且如果统计度量与重新估计的可用带宽的比率小于第二阈值水平，则将拥塞窗口cwnd设置为等于ssthresh。

公开(公告)号：US20140119254A1

公开(公告)日：2014-05-01

申请号：US13881147

申请日：2012-10-26

申请人： Nirwan Ansari ,  Tao Han

发明人： Nirwan Ansari ,  Tao Han

IPC分类号： H04W52/02

CPC分类号： H04W52/0206 ,  H04W52/0203 ,  Y02D70/142

摘要： Technologies are generally described for reducing the from-power-grid energy consumption of a wireless network such as a cellular network over a period of time through cell size adaptations. According to some examples, cell sizes for the base stations may be optimized by decomposing the cell size optimization into two approaches: a multi-stage energy allocation approach and an energy consumption minimization approach. By implementing an energy allocation policy based on available energy type (e.g., from-power grid or renewable) and an approximation technique for the energy consumption minimization, cell size optimization for each base station may be achieved resulting in network-wide enhancement of renewable energy usage vs. from-power-grid energy usage.

摘要翻译： 一般来说，技术被描述为通过小区尺寸适应来减少一段时间内的诸如蜂窝网络的无线网络的从电网能量消耗。 根据一些示例，可以通过将小区大小优化分解为两种方法来优化用于基站的小区大小：多阶段能量分配方法和能量消耗最小化方法。 通过实施基于可用能量类型（例如，从电网或可再生能源）的能量分配策略和用于能量消耗最小化的近似技术，可以实现每个基站的小区大小优化，从而实现可再生能源的网络范围的增强 使用量与电网能耗的关系。

公开(公告)号：US20140313956A1

公开(公告)日：2014-10-23

申请号：US14110708

申请日：2013-04-01

申请人： Nirwan Ansari ,  Tao Han

发明人： Nirwan Ansari ,  Tao Han

IPC分类号： H04W52/02

CPC分类号： H04W52/0206 ,  Y02D70/142 ,  Y02D70/146

摘要： Technologies are generally described for reducing overall power consumption of a wireless network such as a cellular network through spectrum trading. According to some examples, spectrum may be shared between primary base stations (PBSs) and secondary base stations (SBSs) to reduce a power consumption of PBSs and increase the spectral efficiency of cellular networks. A PBS may share a portion of its licensed bandwidth with SBSs, to provide data services to primary users (Pus) within SBSs' coverage area. Due to their proximity to the PUs, the SBSs may satisfy the PUs' quality of service (QoS) requirements by utilizing a portion of the allocated bandwidth. Thus, PBSs may reduce their power consumption by offloading some of the PUs to SBSs. Because the SBSs typically use lower power compared to the PBS, the overall power consumption of the network may be reduced as well.

摘要翻译： 通常描述技术以通过频谱交易来降低诸如蜂窝网络的无线网络的总体功耗。 根据一些示例，可以在主要基站（PBS）和次基站（SBS）之间共享频谱以减少PBS的功率消耗并且增加蜂窝网络的频谱效率。 PBS可以与SBS共享其许可带宽的一部分，以向SBS的覆盖区域内的主要用户（Pus）提供数据服务。 由于它们靠近PU，SBS可以通过利用分配的带宽的一部分来满足PU的服务质量（QoS）要求。 因此，PBS可以通过将一些PU卸载到SBS来降低它们的功率消耗。 由于与PBS相比，SBS通常使用较低的功率，所以网络的整体功耗也可能会降低。

公开(公告)号：US09258361B2

公开(公告)日：2016-02-09

申请号：US12420724

申请日：2009-04-08

申请人： Nirwan Ansari ,  Nan Wang

发明人： Nirwan Ansari ,  Nan Wang

IPC分类号： H04L12/28 ,  H04L29/08

CPC分类号： H04L67/104 ,  H04L67/06 ,  H04L67/108

摘要： Techniques for transferring data among nodes on a network are disclosed. Some example methods include a downloader-initiated random linear network coding algorithm. A downloading node may be aware of the chunks of original data held by neighboring nodes, and the downloading node can request linear combinations of chunks from the neighboring nodes that are linearly independent of any linear combinations of chunks already held by the downloading node.

摘要翻译： 公开了在网络上的节点之间传送数据的技术。 一些示例性方法包括下载器发起的随机线性网络编码算法。 下载节点可以知道由相邻节点保持的原始数据块，并且下载节点可以请求来自相邻节点的线性的线性组合，线程组合与已经由下载节点已经拥有的块的任何线性组合线性相关。

公开(公告)号：US20140047252A1

公开(公告)日：2014-02-13

申请号：US13819267

申请日：2012-05-21

申请人： Nirwan Ansari ,  Yan Zhang

发明人： Nirwan Ansari ,  Yan Zhang

IPC分类号： G06F1/32

CPC分类号： G06F1/32 ,  G06F1/26 ,  G06F1/3203 ,  G06F1/3278 ,  G06F1/3287 ,  Y02D10/157 ,  Y02D10/171

摘要： Technologies are presented for power optimization of datacenter networks in a hierarchical perspective. In some examples, a two-level power optimization model may be established to reduce the power consumption of datacenter networks by switching off network switches and links while still guaranteeing full connectivity and maximum link utilization. The model may be implemented by solving a capacitated constraint multi-commodity flow (CMCF) problem employing simple heuristic techniques. A power status of network switches may be determined according to a network traffic matrix and the CMCF optimization determined at core-level and at pod-level. A complementary process to provision whole network connectivity and to meet quality of service (QoS) goals may also be performed.

摘要翻译： 针对数据中心网络的功能优化技术进行了分层分析。 在一些示例中，可以建立两级功率优化模型，以通过关闭网络交换机和链路来减少数据中心网络的功耗，同时仍然保证完全连接和最大链路利用率。 该模型可以通过使用简单的启发式技术来求解容许约束多商品流（CMCF）问题来实现。 网络交换机的电源状态可以根据网络流量矩阵确定，CMCF优化在核心级别和pod级确定。 也可以执行提供整个网络连接和满足服务质量（QoS）目标的补充过程。

公开(公告)号：US20130279333A1

公开(公告)日：2013-10-24

申请号：US13653215

申请日：2012-10-16

申请人： Fahd Aharbi ,  Nirwan Ansari

发明人： Fahd Aharbi ,  Nirwan Ansari

IPC分类号： H04L12/70

CPC分类号： H04L12/40136 ,  H04L12/437 ,  H04L47/10 ,  H04L47/13 ,  H04L47/283 ,  H04L47/30 ,  H04L47/52

摘要： Implementations and techniques for allocating bandwidth in a resilient packet ring network by a PI-type controller are generally disclosed.

摘要翻译： 通常公开了通过PI型控制器在弹性分组环网中分配带宽的实现和技术。

公开(公告)号：US08385231B2

公开(公告)日：2013-02-26

申请号：US12512635

申请日：2009-07-30

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

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

IPC分类号： H04L12/28

CPC分类号： H04L45/02 ,  H04L45/028 ,  H04L45/04 ,  H04L45/123 ,  H04L45/302 ,  H04L45/48 ,  H04L45/60

摘要： Techniques are generally disclosed for disseminating link state information to one or more nodes of a network of nodes, the network of nodes interconnected via a plurality of communication channels.

摘要翻译： 通常公开技术来将链路状态信息传播到节点网络的一个或多个节点，节点网络经由多个通信信道互连。