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    Techniques for network traffic engineering
    3.
    发明申请
    Techniques for network traffic engineering 审中-公开
    网络流量工程技术

    公开(公告)号：US20050008014A1

    公开(公告)日：2005-01-13

    申请号：US10614738

    申请日：2003-07-07

    申请人： Debasis Mitra ,  Iraj Saniee ,  Anwar Walid ,  Indra Widjaja

    发明人： Debasis Mitra ,  Iraj Saniee ,  Anwar Walid ,  Indra Widjaja

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： H04L45/00 ,  H04L45/124

    摘要： In a traffic engineering technique, a determination is made as to whether any path of a number of predetermined paths meets requirements corresponding to a request. The predetermined paths are determined by substantially maximizing carried demand using at least traffic demand estimates and network topology information and by performing routing for the substantially maximized carried demand. If a given path meeting the requirements is found, a connection on the given path is created, if possible. The predetermined paths are determined through offline TE techniques referred to herein as offline design-based routing (DBR). The requirements for the path may include a destination address and a bandwidth. The offline DBR techniques can include uncertain static demand information or dynamic connections. The offline DBR techniques may be used with adaptive DBR techniques, such that paths are determined offline if possible but can also use shortest path first (SPF), constrained SPF (CSPF) or other techniques during an online path determination. An improvement to a conventional CSPF technique is also presented.

    摘要翻译： 在交通工程技术中，确定多个预定路径的任何路径是否满足与请求相对应的要求。 通过使用至少业务需求估计和网络拓扑信息并且通过执行基本上最大化的携带需求的路由，基本上最大化承载需求来确定预定路径。 如果找到满足要求的给定路径，则可以创建给定路径上的连接。 通过本文中称为基于离线设计的路由（DBR）的离线TE技术确定预定路径。 路径的要求可以包括目的地址和带宽。 离线DBR技术可以包括不确定的静态需求信息或动态连接。 离线DBR技术可以与自适应DBR技术一起使用，使得如果可能的话，路径被确定离线，但是在线路径确定期间也可以使用最短路径优先（SPF），约束SPF（CSPF）或其他技术。 还提出了对常规CSPF技术的改进。

    System and method for WDM communication with interleaving of optical signals for efficient wavelength utilization
    4.
    发明授权
    System and method for WDM communication with interleaving of optical signals for efficient wavelength utilization 失效
    用于WDM通信与光信号交错的系统和方法，用于有效的波长利用

    公开(公告)号：US07283753B2

    公开(公告)日：2007-10-16

    申请号：US10426388

    申请日：2003-04-30

    申请人： Randy Clinton Giles ,  Debasis Mitra ,  Iraj Saniee ,  Indra Widjaja ,  Martin Zirngibl

    发明人： Randy Clinton Giles ,  Debasis Mitra ,  Iraj Saniee ,  Indra Widjaja ,  Martin Zirngibl

    IPC分类号： H04B10/00

    CPC分类号： H04Q11/0066 ,  H04Q2011/0064

    摘要： In a system and method of optical communication, optical signals are generated in multiple wavelength channels. Each optical signal is passively transported from an origination node of a network to a destination node. The destination node is determined by the signal wavelength. For at least some signals, the passive transport includes transport through a branch point of the network, such that the signal wavelength determines the output branch through which the signal is routed. In certain embodiments, signals are generated according to a schedule devised to substantially prevent the concurrent arrival, at the same destination node, of signals having the same wavelength but coming from different origination nodes.

    摘要翻译： 在光通信的系统和方法中，在多个波长信道中产生光信号。 每个光信号被动地从网络的始发节点传送到目的地节点。 目的地节点由信号波长决定。 对于至少一些信号，被动传输包括通过网络的分支点的传输，使得信号波长确定信号被路由的输出分支。 在某些实施例中，根据设计的基本上防止在相同目的地节点处同时到达具有相同波长但来自不同起始节点的信号的调度的信号被生成。

    Intelligent media gateway selection for multimedia communication sessions
    5.
    发明授权
    Intelligent media gateway selection for multimedia communication sessions 有权
    智能媒体网关选择多媒体通信会话

    公开(公告)号：US08937957B2

    公开(公告)日：2015-01-20

    申请号：US11351367

    申请日：2006-02-10

    申请人： Debasis Mitra ,  Iraj Saniee ,  Anwar I. Walid ,  Indra Widjaja

    发明人： Debasis Mitra ,  Iraj Saniee ,  Anwar I. Walid ,  Indra Widjaja

    IPC分类号： H04L12/28 ,  H04L29/06

    CPC分类号： H04L29/06027 ,  H04L65/103 ,  H04L65/104 ,  H04L65/80

    摘要： A method of operating a packet network includes the step of selecting one of a plurality of candidate gateways to connect a multimedia communication session between the packet network and a TDM network. The packet network has a source node of the multimedia communication session, and the TDM network has a destination of the multimedia communication session. The candidate gateways interconnect the packet network and the TDM network. The selecting step includes comparing end-to-end congestions for bearer traffic between the source node and different candidate gateways of the plurality.

    摘要翻译： 操作分组网络的方法包括选择多个候选网关中的一个连接分组网络和TDM网络之间的多媒体通信会话的步骤。 分组网络具有多媒体通信会话的源节点，TDM网络具有多媒体通信会话的目的地。 候选网关将分组网络和TDM网络互连。 所述选择步骤包括比较所述源节点与所述多个节点的不同候选网关之间的承载业务的端对端拥塞。

    Intelligent media gateway selection for multimedia communication sessions
    6.
    发明申请
    Intelligent media gateway selection for multimedia communication sessions 有权
    智能媒体网关选择多媒体通信会话

    公开(公告)号：US20070189268A1

    公开(公告)日：2007-08-16

    申请号：US11351367

    申请日：2006-02-10

    申请人： Debasis Mitra ,  Iraj Saniee ,  Anwar Walid ,  Indra Widjaja

    发明人： Debasis Mitra ,  Iraj Saniee ,  Anwar Walid ,  Indra Widjaja

    IPC分类号： H04L12/66 ,  H04L12/56

    CPC分类号： H04L29/06027 ,  H04L65/103 ,  H04L65/104 ,  H04L65/80

    摘要： A method of operating a packet network includes the step of selecting one of a plurality of candidate gateways to connect a multimedia communication session between the packet network and a TDM network. The packet network has a source node of the multimedia communication session, and the TDM network has a destination of the multimedia communication session. The candidate gateways interconnect the packet network and the TDM network. The selecting step includes comparing end-to-end congestions for bearer traffic between the source node and different candidate gateways of the plurality.

    摘要翻译： 操作分组网络的方法包括选择多个候选网关中的一个连接分组网络和TDM网络之间的多媒体通信会话的步骤。 分组网络具有多媒体通信会话的源节点，TDM网络具有多媒体通信会话的目的地。 候选网关将分组网络和TDM网络互连。 所述选择步骤包括比较所述源节点与所述多个节点的不同候选网关之间的承载业务的端对端拥塞。

    Time scale separated network management and network provisioning optimizations
    7.
    发明授权
    Time scale separated network management and network provisioning optimizations 有权
    时间分隔网络管理和网络配置优化

    公开(公告)号：US08953938B2

    公开(公告)日：2015-02-10

    申请号：US11679515

    申请日：2007-02-27

    申请人： Debasis Mitra ,  Qiong Wang

    发明人： Debasis Mitra ,  Qiong Wang

    IPC分类号： H04Q11/00 ,  H04L12/24

    CPC分类号： H04L41/0806

    摘要： A communication network is configured to implement time scale separated management and provisioning optimizations, for example, in a core optical network coupled to multiple data networks. Network management optimizations are performed at respective points in time separated by intervals of a first time scale, and network provisioning optimizations are performed at respective points in time separated by intervals of a second time scale, with the intervals of the second time scale being on average substantially longer than the intervals of the first time scale. Moreover, at least a given one of the intervals of the second time scale has a length which is determined based on results of performance of one or more of the network management optimizations. The core optical network may be configured utilizing information specified by the network management and network provisioning optimizations.

    摘要翻译： 通信网络被配置为实现例如在耦合到多个数据网络的核心光网络中的时间分隔的管理和供应优化。 网络管理优化在由第一时间尺度的间隔分开的各个时间点执行，并且网络供应优化在由第二时间尺度的间隔分开的各个时间点执行，第二时间间隔的平均值是平均的 比第一时间刻度的间隔长得多。 此外，第二时间刻度的至少一个间隔中的给定的一个具有基于一个或多个网络管理优化的性能的结果确定的长度。 可以利用由网络管理和网络配置优化指定的信息来配置核心光网络。

    Methods and apparatus for managing communication networks supporting multiple quality of service classes utilizing generalized processor sharing
    8.
    发明授权
    Methods and apparatus for managing communication networks supporting multiple quality of service classes utilizing generalized processor sharing 有权
    用于利用广义的处理器共享来管理支持多种服务质量等级的通信网络的方法和装置

    公开(公告)号：US06768744B1

    公开(公告)日：2004-07-27

    申请号：US09531244

    申请日：2000-03-21

    申请人： Krishnan Kumaran ,  Geoffrey Edmund Margrave ,  Debasis Mitra ,  Keith R. Stanley

    发明人： Krishnan Kumaran ,  Geoffrey Edmund Margrave ,  Debasis Mitra ,  Keith R. Stanley

    IPC分类号： H04L1228

    CPC分类号： H04Q11/0478 ,  H04L45/302 ,  H04L45/42 ,  H04L2012/5651 ,  H04L2012/5679

    摘要： Generalized Processor Sharing (GPS) is a scheduling discipline which provides minimum service guarantees as well as fair resource sharing. The performance of GPS is governed by the scheduling weights associated with individual connections. The system discloses methods for GPS scheduling that handle an arbitrary number of connection classes and reservation-based weights and admission control techniques to achieve fairness among connection classes. The methods allow statistical multiplexing gains in the presence of multiple traffic and Quality of Service (QoS) classes of connections that share a common trunk. Also disclosed are several novel techniques to compute and adapt the weights.

    摘要翻译： 通用处理器共享（GPS）是一种调度规则，提供最低限度的服务保证以及公平的资源共享。 GPS的性能由与各个连接相关联的调度权重决定。 该系统公开了处理任意数量的连接类别和基于预约的权重和准入控制技术的GPS调度方法，以实现连接类别之间的公平性。 这些方法允许在存在共享公共中继线的多个业务和服务质量（QoS）类别的存在下的统计复用增益。 还公开了几种用于计算和调整权重的新技术。

    Multicommodity flow method for designing traffic distribution on a multiple-service packetized network
    9.
    发明授权
    Multicommodity flow method for designing traffic distribution on a multiple-service packetized network 有权
    用于设计多业务分组网络上的流量分配的多业务流方法

    公开(公告)号：US06721270B1

    公开(公告)日：2004-04-13

    申请号：US09370826

    申请日：1999-08-09

    申请人： Debasis Mitra ,  Kajamalai Gopalaswamy Ramakrishnan

    发明人： Debasis Mitra ,  Kajamalai Gopalaswamy Ramakrishnan

    IPC分类号： H04L1228

    CPC分类号： H04L49/25 ,  H04L49/205 ,  H04L2012/562 ,  H04L2012/5621 ,  H04L2012/5623 ,  H04L2012/5632 ,  H04L2012/5638 ,  H04L2012/5684 ,  H04Q11/0478

    摘要： A method is described for solving traffic engineering problems in a network. In one aspect, the invention is used in a network that has at least one QoS service class and at least one class of service that is not a QoS class. Bandwidth is allocated to service routes in the QoS service class so as to optimize a figure of merit such as network revenue. Then a new allocation is made so as to minimize network usage without departing too far from the optimal value of the figure of merit. A residual network consists of that bandwidth that remains unallocated, on each link of the network. Bandwidth for non-QoS traffic is allocated to routes on the residual network. In a second aspect, the invention involves the use of optimization techniques to allocate bandwidth among service routes in one or more service classes in response to a set of demands in each class. The demands are calculated so as to take into account an effective bandwidth associated with the pertinent class, and so as to make allowance for the stochastic behavior of the traffic demands that occur in practice.

    摘要翻译： 描述了一种解决网络中流量工程问题的方法。 一方面，本发明用于具有至少一个QoS服务类别和不是QoS类别的至少一类服务的网络。 带宽被分配给QoS服务类中的服务路由，以优化诸如网络收入的品质因数。 然后进行新的分配，以便最小化网络使用，而不会偏离品质因数的最佳值。 残留网络由在网络的每个链路上保持未分配的带宽组成。 非QoS流量的带宽被分配给剩余网络上的路由。 在第二方面，本发明涉及使用优化技术来响应于每个类中的一组需求来在一个或多个服务类别中的服务路由之间分配带宽。 计算要求，以考虑与相关班级相关的有效带宽，并对实际发生的交通需求的随机行为进行补贴。

    Decision support mechanisms for bandwidth commerce in communication networks
    10.
    发明授权
    Decision support mechanisms for bandwidth commerce in communication networks 有权
    通信网络中带宽商务的决策支持机制

    公开(公告)号：US07123588B2

    公开(公告)日：2006-10-17

    申请号：US10163140

    申请日：2002-06-04

    申请人： Debasis Mitra ,  Qiong Wang ,  Kajamalai Gopalaswamy Ramakrishnan

    发明人： Debasis Mitra ,  Qiong Wang ,  Kajamalai Gopalaswamy Ramakrishnan

    IPC分类号： H04L12/28 ,  H04L12/56 ,  G06F15/173

    CPC分类号： H04L41/147 ,  H04L41/0896 ,  H04L47/15 ,  H04L47/70 ,  H04L47/787

    摘要： A method is provided for a dynamic optimization of network resource allocation on the part of a network service provider. In particular, the method of the invention provides an analytical framework for a determination by network service providers of an optimal resource allocation among links in a service provider's own network and links obtained from other network service providers. The analytical framework of the invention also incorporates, as a parameter, the provision of link capacity to other network service providers in the determination of an optimal resource allocation. In a preferred embodiment of the invention, such an optimal resource allocation is determined in respect to revenue maximization for the network service provider.

    摘要翻译： 提供了一种用于网络服务提供商的网络资源分配的动态优化的方法。 具体地，本发明的方法提供了一种用于由网络服务提供商确定服务提供商自己的网络中的链路之间的最佳资源分配以及从其他网络服务提供商获得的链路的分析框架。 作为参数，本发明的分析框架还包括在确定最佳资源分配时向其他网络服务提供商提供链路容量。 在本发明的优选实施例中，关于网络服务提供商的收入最大化来确定这样的最佳资源分配。