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    • 2. 发明授权
    • Low latency shared data path allocation
    • 低延迟共享数据路径分配
    • US07660235B2
    • 2010-02-09
    • US10392574
    • 2003-03-20
    • Mansoor Ali Khan AlicherrySadanand M GogateHarsha S NageshChitra A PhadkeViswanath Poosala
    • Mansoor Ali Khan AlicherrySadanand M GogateHarsha S NageshChitra A PhadkeViswanath Poosala
    • H04L1/16
    • H04L45/24H04L45/00H04L45/22H04L45/28H04L45/62
    • A fast shared path allocation technique is disclosed. Network nodes are pre-configured such that data from multiple data sources or multiple primary data paths may be sent via a shared secondary data path. Merge nodes merge input from a plurality of input ports onto an output port. The merge nodes implement a blocking function such that upon receipt of a signal from one of the input ports, the signals from the other input ports are blocked from reaching the output port. Upon a triggering event indicating a need to allocate the shared path, the data is first sent to the merge node where it is appropriately merged onto the output link and transmitted towards its destination. Only after the data has been sent does the merge node block the remaining input ports from reaching the output port. This blocking may be performed automatically by the merge node or by conventional network signaling.
    • 公开了一种快速共享路径分配技术。 网络节点被预配置成使得可以经由共享的辅助数据路径发送来自多个数据源或多个主数据路径的数据。 合并节点将来自多个输入端口的输入合并到输出端口。 合并节点实现阻塞功能,使得在从其中一个输入端口接收到信号时,来自其他输入端口的信号被阻止到达输出端口。 在指示需要分配共享路径的触发事件时,首先将数据发送到合并节点,在合并节点处适当地合并到输出链路上并向其目的地发送。 只有在发送数据之后,合并节点才能阻止剩余的输入端口到达输出端口。 该阻塞可以由合并节点或传统的网络信令自动执行。
    • 7. 发明授权
    • Routing and design in K-shared network
    • 在K共享网络中的路由和设计
    • US07466688B2
    • 2008-12-16
    • US10656497
    • 2003-09-05
    • Mansoor Ali Khan AlicherryHarsha S. NageshChitra A. PhadkeViswanath Poosala
    • Mansoor Ali Khan AlicherryHarsha S. NageshChitra A. PhadkeViswanath Poosala
    • H04L12/28H04J1/16G08C15/00G06F11/00
    • H04L45/18H04L45/12
    • Techniques for network routing and design are provided. A technique for determining a route for a demand in a network, wherein the network comprises primary paths and secondary paths, and at least two secondary paths may share a given link, comprises the following steps/operations. First, a graph representing the network is transformed. Edges of the graph represent channels associated with paths and nodes of the graph represent nodes of the network. The transformation is performed such that costs associated with the edges reflect costs of using channels in secondary paths. Then, the shortest path between nodes corresponding to the demand is found in the transformed graph. The shortest path represents the least-cost path in the network over which the demand may be routed. When the above route determination steps/operations result in a path with at least one loop, an alternative routing process may be executed so as to determine a loopless path for the demand. Further, integer linear program formulation design techniques are provided.
    • 提供网络路由和设计技术。 一种用于确定网络中的需求的路由的技术,其中所述网络包括主路径和次路径,并且至少两个辅路径可以共享给定链路,包括以下步骤/操作。 首先,转换表示网络的图。 图的边缘表示与路径相关联的信道,图中的节点表示网络的节点。 执行转换,使得与边缘相关联的成本反映在次要路径中使用信道的成本。 然后,在变换图中找到与需求对应的节点之间的最短路径。 最短路径表示可以路由需求的网络中的最低成本路径。 当上述路线确定步骤/操作导致具有至少一个循环的路径时,可以执行替代路由处理,以便确定需求的无衬底路径。 此外,提供整数线性程序公式设计技术。
    • 8. 发明授权
    • Method and apparatus for design of wireless networks to aid in location identification of mobile units
    • 用于设计无线网络以辅助移动单元的位置识别的方法和装置
    • US07099670B2
    • 2006-08-29
    • US10463284
    • 2003-06-17
    • Mansoor Ali Khan AlicherryHarsha NageshChitra PhadkeViswanath Poosala
    • Mansoor Ali Khan AlicherryHarsha NageshChitra PhadkeViswanath Poosala
    • H04Q7/20
    • H04W4/02H04W64/00
    • Techniques and systems for designing a network providing communication and location identification services are described. A solution point comprising parameters for each of a plurality of base stations is generated. A coverage and locatability performance value for the solution point is computed, as well as derivatives of the performance value. The coverage and locatability performance value and its derivatives are used to indicate favorable directions for searching for subsequent solution points, and subsequent solution points are generated and compared against previous solution points until an optimum solution point is found. The coverage and locatability performance value is a weighted sum of coverage and locatability values for each point in the service area of the network, with coverage values representing forward and reverse link quality and locatability values representing the probability that a point will experience an acceptable power level from at least four base stations.
    • 描述了用于设计提供通信和位置识别服务的网络的技术和系统。 生成包括多个基站中的每一个的参数的解点。 计算解点的覆盖率和可定位性能值,以及性能值的导数。 覆盖和定位性能值及其导数用于指示搜索后续求解点的有利方向,并生成后续求解点,并与先前的解点进行比较,直到找到最优解点为止。 覆盖和可定位性能值是网络服务区域中每个点的覆盖率和可定位性值的加权和,覆盖值表示前向链路质量和反向链路质量以及表示点将经受可接受功率级别的概率的可定位值 至少有四个基站。
    • 10. 发明授权
    • Constraint-based design of optical transmission systems
    • 光传输系统的基于约束的设计
    • US07693422B2
    • 2010-04-06
    • US10952015
    • 2004-09-28
    • Mansoor Ali Khan AlicherryHarsha S. NageshChitra A. PhadkeViswanath Poosala
    • Mansoor Ali Khan AlicherryHarsha S. NageshChitra A. PhadkeViswanath Poosala
    • H04B10/20
    • H04B10/07955H04B10/2935
    • Techniques are disclosed for designing optical transmission systems that efficiently compute cost-optimal configurations under one or more constraints. For example, in one aspect of the present invention, a technique for designing an optical transmission system comprises the following steps/operations. A set of one or more demands and a set of optical transmission system elements are obtained. Elements may be consecutively coupled via a span. At least one constraint on the design of the optical transmission system is obtained. The at least one constraint comprises: (i) a signal loss in a span should not exceed a given maximum signal loss; (ii) a signal loss in a span should not exceed a given maximum signal loss and a span should be longer than a given minimum span length; (iii) a signal loss in a span should not exceed a given first maximum signal loss and a span should be longer than a given minimum span length, however, at most one in m contiguous spans can have a loss up to a given second maximum signal loss, wherein the second maximum signal loss is greater than the first maximum signal loss; or (iv) a signal loss in a span should not exceed a given maximum signal loss and a span should be longer than a given minimum span length, and an average span loss of any m consecutive spans should not exceed a given average loss, wherein the average loss is less than the given maximum signal loss. A least-cost configuration is then computed for the optical transmission system based on at least a portion of the set of one or more demands and the set of one or more optical transmission system elements such that the at least one constraint is satisfied.
    • 公开了用于设计在一个或多个约束下有效地计算成本最优配置的光传输系统的技术。 例如,在本发明的一个方面,一种用于设计光传输系统的技术包括以下步骤/操作。 获得一组一个或多个要求和一组光传输系统元件。 元件可以通过跨度连续地耦合。 获得了对光传输系统的设计的至少一个限制。 所述至少一个约束包括:(i)跨度中的信号损失不应超过给定的最大信号损耗; (ii)跨度中的信号损失不应超过给定的最大信号损失,跨度应该长于给定的最小跨距长度; (iii)跨度中的信号损失不应超过给定的第一最大信号损失,并且跨度应该长于给定的最小跨度长度,然而,最多一个m个连续跨度可以具有高达给定的第二最大值的损耗 信号丢失,其中所述第二最大信号损失大于所述第一最大信号损耗; 或(iv)跨度中的信号损失不应超过给定的最大信号损失,并且跨度应该长于给定的最小跨度长度,并且任何m个连续跨度的平均跨度损失不应超过给定的平均损耗,其中 平均损耗小于给定的最大信号损失。 然后,基于一个或多个需求集合的至少一部分和一个或多个光传输系统元件的集合来计算光传输系统的最小成本配置,使得满足至少一个约束。