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1. 发明授权

US07660243B2 Method for management of voice-over IP communications 有权
标题翻译：语音IP通信管理方法
公开(公告)号：US07660243B2
公开(公告)日：2010-02-09
申请号：US10951429
申请日：2004-09-28
申请人： David J. Houck , Huseyin Uzunalioglu
发明人： David J. Houck , Huseyin Uzunalioglu
IPC分类号： H04J1/16
CPC分类号： H04L47/783 , H04L43/0882 , H04L43/10 , H04L43/16 , H04L45/50 , H04L47/12 , H04L47/15 , H04L47/29 , H04L47/70 , H04L47/762 , H04L47/801 , H04L47/822 , H04L47/825 , H04L65/80
摘要： Method for admitting new voice calls to a VoIP network. Various points in the network are polled to generate a link utilization parameter. Parameters denoting threshold values of link utilization in the network are compared to the link utilization parameter. A first comparison is made between a first (current) link utilization parameter and first and second link utilization threshold parameters. Then, a second comparison is made between the current link utilization parameter and a second (previous) value of link utilization. A calculation of new calls allowed into the network is performed based on these comparisons and whether the current level of link utilization is rising or falling when compared to a previous level of link utilization.
摘要翻译：允许新的语音呼叫到VoIP网络的方法。轮询网络中的各个点以生成链路利用率参数。将网络中链路利用率阈值的参数与链路利用率参数进行比较。在第一（当前）链路利用参数和第一和第二链路利用阈值参数之间进行第一比较。然后，在当前链路利用率参数和链路利用率的第二（先前）值之间进行第二比较。基于这些比较，执行允许进入网络的新呼叫的计算，以及与先前的链路利用率相比，链路利用率的当前级别是上升还是下降。

2. 发明授权

US06463062B1 Integrating switching and facility networks using ATM 有权
标题翻译：使用ATM集成交换和设施网络
公开(公告)号：US06463062B1
公开(公告)日：2002-10-08
申请号：US09219319
申请日：1998-12-23
申请人： Cagatay Buyukkoc , David J. Houck , Pravin Kumar Johri , Kathleen S. Meier-Hellstern , Steven M. Michelson , Rodolfo Alberto Milito
发明人： Cagatay Buyukkoc , David J. Houck , Pravin Kumar Johri , Kathleen S. Meier-Hellstern , Steven M. Michelson , Rodolfo Alberto Milito
IPC分类号： H04J324
CPC分类号： H04L45/50 , H04L12/5601 , H04L12/5602 , H04L45/10 , H04L45/505 , H04L2012/562 , H04L2012/5629 , H04L2012/5632 , H04L2012/5667 , H04L2012/5669 , H04L2012/5679 , H04L2012/568 , H04Q11/0478
摘要： A method is provided for setting up a communication from a first edge node, across a network that uses direct virtual path routing, to a second edge node. The first edge node receives a request to set up the communication. The second edge node is identified as the destination of the communication, based on the request. A first virtual path identifier (VPI) is obtained that defines a first path from the first edge node across the network to the second edge node. A second VPI is obtained that defines a second path from the second edge node across the network to the first edge node. The first and second VPIs are selected by a routing status database. A first virtual channel identifier (VCI) within the first VPI is selected. A second virtual channel identifier (VCI) within the second VPI is selected. Data is transmitted from the first edge node to the second edge node using the first VPI and first VCI, and from the second edge node to the first edge node using the second VPI and second VCI. Switches adapted to carry out the method are also provided.
摘要翻译：提供了一种用于设置来自第一边缘节点的通过跨越使用直接虚拟路径路由的网络到第二边缘节点的通信的方法。第一边缘节点接收到建立通信的请求。基于该请求，将第二边缘节点识别为通信的目的地。获得第一虚拟路径标识符（VPI），其定义从第一边缘节点跨越网络到第二边缘节点的第一路径。获得第二VPI，其定义从第二边缘节点跨网络到第一边缘节点的第二路径。第一和第二VPI由路由状态数据库选择。选择第一VPI内的第一虚拟信道标识符（VCI）。选择第二VPI内的第二虚拟信道标识符（VCI）。使用第一VPI和第一VCI从第一边缘节点向第二边缘节点发送数据，并且使用第二VPI和第二VCI从第二边缘节点向第一边缘节点发送数据。还提供了适于执行该方法的开关。

3. 发明授权

US06778496B1 Distributed call admission and load balancing method and apparatus for packet networks 有权
标题翻译：分组呼叫接入和分组网络的负载均衡方法和装置
公开(公告)号：US06778496B1
公开(公告)日：2004-08-17
申请号：US09589304
申请日：2000-06-07
申请人： Gopalakrishnan Meempat , David J. Houck
发明人： Gopalakrishnan Meempat , David J. Houck
IPC分类号： H04L1228
CPC分类号： H04L45/123 , H04L45/22 , H04L45/302 , H04L45/38 , H04L47/10 , H04L47/11 , H04L47/125
摘要： A method and apparatus to control call admission to a packet-based network and achieve load balancing over a packet-based network includes at selected times generating and sending a path status message along a defined path, such as an MPLS path, through the network. As the message travels along the path, a cost metric field within the message is updated. The cost metric may reflect available bandwidth, or percentage utilization of the aggregate bandwidth, on the most congested (bottleneck) link in the path that it tracks. The cost metric is determined for each link at a data measuring point, such as individual routers, along the path. The optimum path between two gateways is determined, and further packet streams are routed onto the optimum path. In the event that no paths between a source and destination gateway meet predetermined utilization criteria, a packet stream block indicator is set which shows a requesting edge router that no paths are currently available for a packet stream requesting routing between particular source and destination gateway. The path utilization status message may be generated alternately in routers or in a master gateway. In either case, the messages are sent and the status of the network is determined in a distributed fashion at selected times, such as a regular timed interval.
摘要翻译：控制对基于分组的网络的呼叫许可并且在基于分组的网络上实现负载平衡的方法和装置包括在选定的时间沿着诸如MPLS路径的定义的路径生成和发送路径状态消息。当消息沿着路径行进时，消息内的成本度量字段被更新。成本度量可以反映其跟踪的路径中最拥塞（瓶颈）链路的可用带宽或总带宽的百分比利用率。为数据测量点的每个链路确定成本度量，例如沿路径的单个路由器。确定两个网关之间的最佳路径，并且进一步的分组流被路由到最佳路径上。在源和目的地网关之间没有路径满足预定的利用标准的情况下，设置分组流块指示符，其显示请求边缘路由器，所述请求边缘路由器当前没有路径可用于请求在特定源和目的地网关之间路由的分组流。可以在路由器或主网关中交替地产生路径利用状态消息。在任一种情况下，发送消息，并且在选定的时间（例如，定时间隔）以分布式方式确定网络的状态。

4. 发明授权

US6021118A Synchronization methods for distributed processing systems having replicated data 失效
标题翻译：具有复制数据的分布式处理系统的同步方法
公开(公告)号：US6021118A
公开(公告)日：2000-02-01
申请号：US795263
申请日：1997-02-10
申请人： David J. Houck , Kin K. Leung , Peter M. Winkler
发明人： David J. Houck , Kin K. Leung , Peter M. Winkler
IPC分类号： G06F15/173 , H04L12/28 , H04J3/06
CPC分类号： G06F15/17381
摘要： A data synchronization system, which in one embodiment, uses a ShuffleNet topology requiring an even number, N=2m, of nodes in the system. These nodes are organized into two sets, X=x.sub.0, . . . , x.sub.m-1 and Y=y.sub.0, . . . , y.sub.m-1, wherein the subscripts are always to be taken modulo m. Each "round" of communication entails simultaneously synchronizing the nodes in X with nodes in Y according to a matching between the two sets. The rounds are grouped into two "batches," batch B.sub.j which consists of rounds R.sub.2j-1 and R.sub.2j-2 for j.gtoreq.1. During each odd batch B.sub.2j-1, each x.sub.i synchronizes with y.sub.2i+2j-2 and with y.sub.2i+2j-1. In another embodiment, the data synchronization is based on a hypercube scheme, wherein each node is labeled by a binary string and any two nodes with their labels differing by one bit are connected by an edge and only adjacent nodes, i.e. those nodes connected by an edge, can communicate and exchange data directly according to an update schedule. In a third embodiment, a hypercube scheme is used, but the number of nodes is assumed to be a power of 2 or N=2.sup.m. This embodiment, like the second embodiment, uses the labeling of nodes by their binary representation, but the matchings of nodes used to determine the update schedule is not confined to the hypercube edges. Instead, a general cyclic matching scheme is used.
摘要翻译：数据同步系统在一个实施例中使用需要系统中偶数N = 2m的节点的ShuffleNet拓扑。这些节点被组织成两组，X = x0，。。。，xm-1和Y = y0，。。。，ym-1，其中下标总是被取为模m。每个“圆”通信需要根据两组之间的匹配同时使X中的节点与Y中的节点同步。这些轮分为两个“批次”，批次Bj由j> / = 1的轮次R2j-1和R2j-2组成。在每个奇数批次B2j-1期间，每个xi与y2i + 2j-2和y2i + 2j-1同步。在另一个实施例中，数据同步基于超立方体方案，其中每个节点由二进制串标记，并且其标签不同于一位的任何两个节点由边缘连接，并且仅相邻节点连接，即通过边缘，可以根据更新时间表直接进行数据交换和交换。在第三实施例中，使用超立方体方案，但是假定节点数为2或N = 2m的幂。该实施例与第二实施例一样，通过其二进制表示来使用节点的标注，但是用于确定更新时间表的节点的匹配不限于超立方体边缘。相反，使用一般的循环匹配方案。

5. 发明授权

US07420962B2 Method for management of voice-over IP communications of various relative priority levels 有权
标题翻译：用于管理各种相对优先级别的语音IP通信的方法
公开(公告)号：US07420962B2
公开(公告)日：2008-09-02
申请号：US10674123
申请日：2003-09-26
申请人： Kamala Prasad Das , David J. Houck , Om Prakash Mahajan
发明人： Kamala Prasad Das , David J. Houck , Om Prakash Mahajan
IPC分类号： H04L12/66
CPC分类号： H04L47/822 , H04L41/0896 , H04L41/5022 , H04L41/5087 , H04L47/2408 , H04L47/2416 , H04L47/245 , H04L47/70 , H04L47/745 , H04L47/765 , H04L47/801 , H04L47/805 , H04L47/821 , H04L65/80 , H04M2242/06
摘要： A method for managing calls of various relative priority levels in an IP network includes polling at least one location in the network to obtain information indicative of a level of utilization said at least one location and computing a status of utilization of said at least one location based on said polled information and assigning a decision policy to said status. A priority level of a new voice call requesting to enter the network is then assessed against relative to priorities of existing calls on the network and the decision policy is invoked on the new voice call according to its relative priority level to the existing calls on the network and the decision policy in effect at the time the new voice call requests entry to the network.
摘要翻译：用于管理IP网络中的各种相对优先级的呼叫的方法包括轮询网络中的至少一个位置以获得指示所述至少一个位置的利用水平的信息，并计算所述至少一个位置的利用状态对所述被查询的信息，并将决策政策分配给所述状态。然后根据相对于网络上的现有呼叫的优先级来评估请求进入网络的新语音呼叫的优先级，并且根据其对网络上的现有呼叫的相对优先级在新语音呼叫上调用决策策略以及在新的语音呼叫请求进入网络时有效的决策策略。

6. 发明授权

US06081506A Integrating switching and facility networks using ATM 失效
公开(公告)号：US06081506A
公开(公告)日：2000-06-27
申请号：US974172
申请日：1997-11-19
申请人： Cagatay Buyukkoc , David J. Houck , Pravin Kumar Johri , Kathleen S. Meier-Hellstern , Rodolfo Alberto Milito
发明人： Cagatay Buyukkoc , David J. Houck , Pravin Kumar Johri , Kathleen S. Meier-Hellstern , Rodolfo Alberto Milito
IPC分类号： H04L12/56 , H04Q11/04 , H04J3/24
CPC分类号： H04L12/5602 , H04Q11/0478 , H04L2012/562 , H04L2012/5632
摘要： An efficient approach and corresponding apparatus for selecting virtual paths in a network for routing datagrams achieves effective sharing of capacity without adversely affecting call setup latency. Edge nodes of the network assign calls to virtual paths based on the destination of the call and the current load status of each of a relatively small number of paths. Each call is assigned a VPI (Virtual Path Identifier) corresponding to the path chosen and a VCI (Virtual Circuit Identifier) corresponding to the identity of the call at that edge node. The ATM backbone nodes route calls based solely on the VPI. Capacity management and load balancing is achieved by each edge node keeping track of the load on each access link from its edge node to the rest of the network and of the congestion status of the various links in the network. In one embodiment, the edge node periodically sends information about its usage of the network to a "central fabric network interface" which combines information from all edge nodes, evaluates congestion status for the network links, and forwards that information back to the edge nodes.

7. 发明授权

US4275264A Portable hand-held length probe with tracing-unit-actuated length signal output control switch 失效
标题翻译：便携式手持长度探头，带跟踪单元驱动长度信号输出控制开关
公开(公告)号：US4275264A
公开(公告)日：1981-06-23
申请号：US62942
申请日：1979-08-02
申请人： David J. Houck
发明人： David J. Houck
IPC分类号： G01B3/12 , G01B11/02 , G01D5/244 , G08C21/00 , G08B5/22
CPC分类号： G01B11/02 , G01B3/12 , G01D5/24404
摘要： A portable hand-held length probe with a length measuring wheel and a tracing unit which is mounted adjacent the wheel and is movable by pressing the tracing unit against a surface to be measured. A wheel movement indicative output signal is effected as function of wheel movement, and the probe carries a switch which is actuated as a function of depress-release movement of the tracing unit to enable or disable transmission of the wheel movement indicative output signal.
摘要翻译：一种具有长度测量轮和跟踪单元的便携式手持式长度探头，其安装在车轮附近，并且可通过将跟踪单元压靠在待测表面上而移动。轮子运动指示输出信号作为车轮运动的功能而实现，并且探头承载根据跟踪单元的按压释放运动而被致动的开关，以启用或禁止车轮移动指示输出信号的传输。

8. 发明授权

US06904017B1 Method and apparatus to provide centralized call admission control and load balancing for a voice-over-IP network 有权
标题翻译：为IP语音网络提供集中呼叫准入控制和负载均衡的方法和装置
公开(公告)号：US06904017B1
公开(公告)日：2005-06-07
申请号：US09566537
申请日：2000-05-08
申请人： Gopalakrishnan Meempat , David J. Houck
发明人： Gopalakrishnan Meempat , David J. Houck
IPC分类号： H04L29/06 , H04M7/00 , H04J1/16
CPC分类号： H04L65/1043 , H04L29/06027 , H04L47/70 , H04L47/781 , H04L47/828 , H04L65/103 , H04L65/104 , H04L65/1069 , H04L65/80 , H04M7/1245
摘要： An admission control and load balancing system controls admission of packet streams or calls to a network and balances the packet traffic across the network, improving quality of service. The system includes a central database which stores information including cost data associated with individual paths and links across the network. A processor, in communication with the database, coordinates the admission control and load balancing decisions, and updates of the database cost data to reflect the dynamic network conditions, based on input from appropriate data sources. In one embodiment, referred to as the exact algorithm, the database is consulted by the admission control points or gatekeepers prior to admitting each arriving packet stream, and the database contents are updated call-by-call to reflect the allocation of resources to each admitted stream. In another embodiment, referred to as the inexact algorithm, control decision as well as database updates occur on a periodic rather than on a call-by-call basis to promote better scalability. In this embodiment, the processor periodically calculates admission decisions based on cost data in the central database. These admission decisions are then periodically forwarded to a satellite database associated with each gatekeeper, for storage and use in admission decisions until the next update epoch.
摘要翻译：准入控制和负载平衡系统控制分组流的接纳或对网络的呼叫，并平衡网络上的分组流量，提高服务质量。该系统包括中央数据库，其存储包括与跨越网络的各个路径和链接相关联的成本数据的信息。与数据库通信的处理器根据来自适当数据源的输入来协调准入控制和负载均衡决策以及更新数据库成本数据以反映动态网络条件。在一个实施例中，被称为精确算法，在接纳每个到达的分组流之前，由接纳控制点或网守查询数据库，并且逐个呼叫更新数据库内容以反映每个被允许的资源分配流。在另一实施例中，被称为不精确的算法，控制决策以及数据库更新以周期性而不是逐个呼叫的方式发生，以促进更好的可扩展性。在该实施例中，处理器基于中央数据库中的成本数据周期性地计算准入决定。然后将这些准入决定周期地转发到与每个关守相关联的卫星数据库，以便存储和使用入场决定，直到下一个更新纪元。

9. 发明授权

US06452902B1 Integrating switching and facility networks using ATM 有权
标题翻译：使用ATM集成交换和设施网络
公开(公告)号：US06452902B1
公开(公告)日：2002-09-17
申请号：US09570240
申请日：2000-09-08
申请人： Cagatay Buyukkoc , David J. Houck , Pravin Kumar Johri , Kathleen S. Meier-Hellstern , Rodolfo Alberto Milito
发明人： Cagatay Buyukkoc , David J. Houck , Pravin Kumar Johri , Kathleen S. Meier-Hellstern , Rodolfo Alberto Milito
IPC分类号： H04J324
CPC分类号： H04L12/5602 , H04L2012/562 , H04L2012/5632 , H04Q11/0478
摘要： An efficient approach and corresponding apparatus for selecting virtual paths in a network for routing datagrams achieves effective sharing of capacity without adversely affecting call setup latency. Edge nodes of the network assign calls to virtual paths based on the destination of the call and the current load status of each of a relatively small number of paths. Each call is assigned a VPI (Virtual Path Identifier) corresponding to the path chosen and a VCI (Virtual Circuit Identifier) corresponding to the identity of the call at that edge node. The ATM backbone nodes route calls based solely on the VPI. Capacity management and load balancing is achieved by each edge node keeping track of the load on each access link from its edge node to the rest of the network and of the congestion status of the various links in the network. In one embodiment, the edge node periodically sends information about its usage of the network to a “central fabric network interface” which combines information from all edge nodes, evaluates congestion status for the network links, and forwards that information back to the edge nodes.
摘要翻译：用于选择网络中用于路由数据报的虚拟路径的有效方法和相应装置实现了容量的有效共享，而不会不利地影响呼叫建立等待时间。网络的边缘节点根据呼叫的目的地和相对较少数量的路径中的每一个的当前负载状态来分配对虚拟路径的呼叫。每个呼叫被分配与所选路径相对应的VPI（虚拟路径标识符）和对应于该边缘节点处的呼叫标识的VCI（虚拟电路标识符）。 ATM主干节点仅基于VPI路由呼叫。容量管理和负载均衡由每个边缘节点跟踪从其边缘节点到网络的其余部分的每个接入链路上的负载以及网络中各种链路的拥塞状态。在一个实施例中，边缘节点周期性地将关于其网络的使用的信息发送到组合来自所有边缘节点的信息的“中心结构网络接口”，评估网络链路的拥塞状态，并将该信息转发回到边缘节点。

10. 发明授权

US5943411A Method for routing an NP call 失效
标题翻译： NP呼叫路由方法
公开(公告)号：US5943411A
公开(公告)日：1999-08-24
申请号：US855828
申请日：1997-05-12
申请人： David J. Houck , Lev Slutsman , Kamlesh T. Tewani , Lance Wayne Wilson
发明人： David J. Houck , Lev Slutsman , Kamlesh T. Tewani , Lance Wayne Wilson
IPC分类号： H04M3/42 , H04M7/00 , H04Q3/00
CPC分类号： H04Q3/005 , H04M3/42229 , H04M7/00
摘要： A method of routing an interim NP call in which it is determined to give a called number interim NP redirection rather than conventional RCF redirection when the called number is to be ported. When a ported call is to receive interim NP redirection and SS7 networking is used, an Initial Address Message for the call is created with the Called Party Number parameter of the Initial Address Message populated with the Location Routing Number for the switch to which the called number has been ported. The Generic Address Parameter of the Initial Address Message is populated with the called number and the M bit of the Forward Call Indicator parameter of the Initial Address Message is set. The call is then redirected to the switch to which the called number has been ported based on the Location Routing Number in the Called Party Number parameter of an Initial Address Message. This method avoids the use of RCF "shadow numbers" and the need to query an external long-term NP database.
摘要翻译：路由临时NP呼叫的方法，其中当被叫号码被移植时，确定其进行被叫号码中间NP重定向，而不是传统的RCF重定向。当端口呼叫接收临时NP重定向并使用SS7联网时，将创建呼叫的初始地址消息，其中使用初始地址消息的被叫方号码参数填充交换机的位置路由号码，其中被叫号码已经移植。初始地址消息的通用地址参数用被叫号码填充，并且设置了初始地址消息的转发呼叫指示符参数的M位。然后根据初始地址消息的被叫方号码参数中的位置路由号码，将该呼叫重定向到被呼叫号码已被移植到的交换机。该方法避免使用RCF“阴影号”，并需要查询外部长期NP数据库。

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