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1.发明申请公开(公告)号：US20070081460A1
公开(公告)日：2007-04-12
申请号：US11329933
申请日：2006-01-11
IPC分类号： H04L12/26
摘要： A technique is disclosed that evaluates a network path between (i) a first node in a first subnetwork of endpoint nodes, such as IP phones, and (ii) a second node in a second subnetwork. A “ricochet” node in the network path evaluates the path by probing one or both subnetworks, where the ricochet node acts as relay for traffic packets being transmitted between the two subnetworks. A given relay has only to probe a single, representative node within a subnetwork at any given time in order to obtain performance data that is representative of the subnetwork overall. By probing the representative node, the relay is able to acquire an assessment of network conditions that is valid for the path between the relay and any endpoint in the subnetwork. As a result, the disclosed technique reduces the probing overhead when many endpoint nodes on a given subnetwork are simultaneously active and experiencing adverse network conditions.
摘要翻译： 公开了一种技术，其评估（i）端点节点的第一子网络中的第一节点（例如IP电话）和（ii）第二子网络中的第二节点之间的网络路径。 网络路径中的“弹射”节点通过探测一个或两个子网络来评估路径，其中弹性节点用作在两个子网络之间传输的业务分组的中继。 给定的中继只能在任何给定的时间探测子网内的单个代表性节点，以获得代表子网的性能数据。 通过探测代表节点，中继器能够获取对于继电器和子网中的任何端点之间的路径有效的网络条件的评估。 因此，所公开的技术减少了给定子网上的许多端点节点同时处于活动状态并且经历不利的网络条件时的探测开销。
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2.发明申请Coding and packet distribution for alternative network paths in telecommunications networks 有权电信网络中替代网络路径的编码和分组分发公开(公告)号：US20070177579A1
公开(公告)日：2007-08-02
申请号：US11342193
申请日：2006-01-27
申请人： Eric Diethorn , Bengi Karacali-Akyamac , Mark Karol , Anjur Krishnakumar , P. Krishnan , Jean Meloche
发明人： Eric Diethorn , Bengi Karacali-Akyamac , Mark Karol , Anjur Krishnakumar , P. Krishnan , Jean Meloche
IPC分类号： H04L12/66
CPC分类号： H04L47/10 , H04L45/24 , H04L45/302 , H04L47/38
摘要： A method and apparatus are disclosed that seek to improve the quality of service that is experienced during the transmission of a stream of packets across one or more paths. In particular, a transmitting node encodes a source stream of data (e.g., audio, video, etc.) into one or more sub-streams, and distributes those sub-streams onto multiple network transmission paths. In accordance with the illustrative embodiment of the present invention, the transmitting node evaluates the quality of service of a first network path that fails to provide a quality-of-service guarantee. When the quality of service of the first network path becomes unsatisfactory, the coding of one or more sub-streams that are being transmitted on a second network path is adjusted. In other words, the coding on a second channel is adjusted in response to the changing conditions on a first channel.
摘要翻译： 公开了一种方法和装置，其尝试提高在一个或多个路径上的分组流传输期间经历的服务质量。 具体地，发送节点将数据源（例如，音频，视频等）编码成一个或多个子流，并将这些子流分配到多个网络传输路径上。 根据本发明的说明性实施例，发送节点评估不能提供服务质量保证的第一网络路径的服务质量。 当第一网络路径的服务质量不能令人满意时，调整在第二网络路径上发送的一个或多个子流的编码。 换句话说，响应于第一信道上的变化条件来调整第二信道上的编码。
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公开(公告)号：US20060203805A1
公开(公告)日：2006-09-14
申请号：US11201892
申请日：2005-08-11
申请人： Bengl Karacali-Akyamac , Jean Meloche , Mark Karol , P Krishnan
发明人： Bengl Karacali-Akyamac , Jean Meloche , Mark Karol , P Krishnan
摘要： A method that seeks to provide a satisfactory quality of service for a stream of packets through a network. The illustrative embodiment of the present invention seeks to provide a satisfactory quality of service for a stream of packets by periodically or sporadically evaluating one or more alternative paths through the network and by sending the packets through a path with an acceptable quality of service. Normally, neither the source node nor any other node in a packet's path controls its route after it has left the node. In contrast, the illustrative embodiment of the present invention has the capability to affect the packet's path through the network by sending the packet to an intermediate or “ricochet” node in the network, which forwards the packet to the destination node. In effect, the source node can, if it deems appropriate, ricochet the packet off of the intermediate node rather than allowing the packet to take its normal direct path through the network.
摘要翻译： 一种寻求通过网络为数据包流提供令人满意的服务质量的方法。 本发明的说明性实施例旨在通过周期性地或偶尔地评估通过网络的一个或多个替代路径以及通过具有可接受的服务质量的路径发送分组来为分组流提供令人满意的服务质量。 通常，分组路径中的源节点和任何其他节点都不会在离开节点后控制其路由。 相比之下，本发明的说明性实施例具有通过将分组发送到网络中的中间或“弹射”节点来影响分组通过网络的路径的能力，该节点将分组转发到目的地节点。 实际上，如果源节点认为合适，则可以使分组从中间节点跳出，而不是允许分组采用其通过网络的正常直接路径。
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4.发明申请System and method for notification of internet users about faults detected on an IP network 有权互联网用户通知IP网络上检测到的故障的系统和方法公开(公告)号：US20050002400A1
公开(公告)日：2005-01-06
申请号：US10601229
申请日：2003-06-21
申请人： Mark Karol , P. Krishnan , Juan Li
发明人： Mark Karol , P. Krishnan , Juan Li
CPC分类号： H04L65/608 , H04L29/06027 , H04L41/06 , H04L41/147 , H04L41/5009 , H04L41/5087 , H04L65/80 , H04L69/40
摘要： The present invention is a system and method for rapid network failure detection, identification and notification to internet users. It is particular applicable to VoIP applications where such real-time problem identification is particular valuable. It reduces failure detection time by coordinating the sending frequency of RTP and RTCP packets. These incoming packets are monitored and the failure to receive a predetermined number in a specified time window indicates that a network problem has occurred. This problem is then promptly communicated to users of the system.
摘要翻译： 本发明是一种用于快速网络故障检测，识别和通知互联网用户的系统和方法。 它特别适用于VoIP应用，其中这种实时问题识别特别有价值。 通过协调RTP和RTCP报文的发送频率，减少故障检测时间。 监视这些传入的分组，并且在指定的时间窗口中不能接收到预定的数字表示发生了网络问题。 然后将该问题及时通知给系统的用户。
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公开(公告)号：US20050281204A1
公开(公告)日：2005-12-22
申请号：US10953024
申请日：2004-09-29
申请人： Mark Karol , P. Krishnan , Juan Li
发明人： Mark Karol , P. Krishnan , Juan Li
摘要： Techniques for performing rapid fault detection and recovery in communication networks are disclosed. For example, in one aspect of the invention, a technique for detecting one or more conditions in a communication network comprises the following steps/operations. One or more keep-alive packets are transmitted from a source node in the communication network to a destination node in the communication network over two or more paths between the source node and the destination node, wherein the two or more paths are at least partially disjoint. Upon receipt of the one or more keep-alive packets at the destination node via the two or more paths, at least one quality measure is computed at the destination node for each of the two or more paths, the at least one quality measure being indicative of one or more conditions in the communication network. While not limited thereto, the invention is particularly well-suited to Internet Protocol (IP) telephony networks, particularly those that provide Voice over IP (VoIP) applications.
摘要翻译： 公开了在通信网络中执行快速故障检测和恢复的技术。 例如，在本发明的一个方面，用于检测通信网络中的一个或多个条件的技术包括以下步骤/操作。 一个或多个保持活动分组从通信网络中的源节点通过源节点和目的地节点之间的两个或多个路径发送到通信网络中的目的地节点，其中两个或更多个路径至少部分地不相交 。 经由两个或多个路径在目的地节点处接收到一个或多个保持活动分组时，在目的地节点处针对两个或更多个路径中的每一个计算至少一个质量度量，所述至少一个质量度量指示 通信网络中的一个或多个条件。 虽然不限于此，本发明特别适用于因特网协议（IP）电话网络，特别是那些提供IP语音（VoIP）应用的电话网络。
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公开(公告)号：US20120113896A1
公开(公告)日：2012-05-10
申请号：US13237513
申请日：2011-09-20
申请人： Mark Karol
发明人： Mark Karol
IPC分类号： H04W4/00
CPC分类号： H04W40/08
摘要： A wireless ad hoc network may be composed of several nodes that are coupled by communication links and configured dynamically. As the packet is transmitted from one node to the next node or hop in a predetermined route, a neighboring node, within the same transmission range, may hear the broadcasted transmission. If the neighboring node determines that a future hop on the route includes the neighboring node, the neighboring node may receive the packet at that time thereby skipping one or more hops along the route. The neighboring node may then forward the packet to the next node in the route.
摘要翻译： 无线自组织网络可以由通过通信链路耦合并被动态配置的几个节点组成。 当分组从预定路由从一个节点传送到下一个节点或跳时，相同的传输范围内的相邻节点可以听到广播的传输。 如果相邻节点确定该路由上的未来跳跃包括相邻节点，则相邻节点可能在那时接收该分组，从而跳过该路由的一个或多个跳。 然后，相邻节点可以将分组转发到路由中的下一个节点。
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公开(公告)号：US08472313B2
公开(公告)日：2013-06-25
申请号：US12787600
申请日：2010-05-26
申请人： Mark Karol
发明人： Mark Karol
IPC分类号： G01R31/08
CPC分类号： H04J14/0257 , H04J14/0212 , H04J14/0267 , H04J14/0269
摘要： Optical bypass circuits are selected and created with a desired amount of traffic on each circuit to offload from the IP routers, the maximum possible amount of traffic. In a first phase, each node in a network independently determines the maximum number of optical bypass circuits, configured to their maximum capacity, to as many destinations, that could possibly originate at that node. The determination is made by aggregating traffic from a given traffic matrix. The optical bypass circuit transports traffic that originates at the node plus transient traffic that the node receives from other nodes. In the second phase, the node will eliminate an optical bypass circuit found in the first phase if any of its parent nodes created a necessarily longer optical bypass circuit to the same destination. In addition, if a descendent node has more aggregate traffic to fill more bypass circuits than the parent node, then the extra optical bypass circuits from the descendent node are also created.
摘要翻译： 在每个电路上选择并创建光旁路电路，以便从IP路由器卸载最大可能的流量。 在第一阶段，网络中的每个节点独立地将配置成其最大容量的光学旁路电路的最大数量确定为可能源于该节点的尽可能多的目的地。 通过聚合来自给定业务矩阵的流量进行确定。 光学旁路电路传输源自节点的流量加上节点从其他节点接收的瞬时流量。 在第二阶段中，如果其父节点中的任何一个节点为相同的目的地产生必要的更长的光旁路电路，则节点将消除在第一阶段中发现的光旁路电路。 此外，如果后代节点具有更多的聚合流量来填充比父节点更多的旁路电路，则还创建了来自后代节点的额外的光旁路电路。
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公开(公告)号：US20110129222A1
公开(公告)日：2011-06-02
申请号：US12787600
申请日：2010-05-26
申请人： Mark Karol
发明人： Mark Karol
IPC分类号： H04J14/00
CPC分类号： H04J14/0257 , H04J14/0212 , H04J14/0267 , H04J14/0269
摘要： Optical bypass circuits are selected and created with a desired amount of traffic on each circuit to offload from the IP routers, the maximum possible amount of traffic. In a first phase, each node in a network independently determines the maximum number of optical bypass circuits, configured to their maximum capacity, to as many destinations, that could possibly originate at that node. The determination is made by aggregating traffic from a given traffic matrix. The optical bypass circuit transports traffic that originates at the node plus transient traffic that the node receives from other nodes. In the second phase, the node will eliminate an optical bypass circuit found in the first phase if any of its parent nodes created a necessarily longer optical bypass circuit to the same destination. In addition, if a descendent node has more aggregate traffic to fill more bypass circuits than the parent node, then the extra optical bypass circuits from the descendent node are also created.
摘要翻译： 在每个电路上选择并创建光旁路电路，以便从IP路由器卸载最大可能的流量。 在第一阶段，网络中的每个节点独立地将配置成其最大容量的光学旁路电路的最大数量确定为可能源于该节点的尽可能多的目的地。 通过聚合来自给定业务矩阵的流量进行确定。 光学旁路电路传输源自节点的流量加上节点从其他节点接收的瞬时流量。 在第二阶段中，如果其父节点中的任何一个节点为相同的目的地产生必要的更长的光旁路电路，则节点将消除在第一阶段中发现的光旁路电路。 此外，如果后代节点具有更多的聚合流量来填充比父节点更多的旁路电路，则还创建了来自后代节点的额外的光旁路电路。
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