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1. 发明申请

US20050281204A1 Rapid fault detection and recovery for internet protocol telephony 有权
标题翻译：互联网协议电话快速故障检测和恢复
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
IPC分类号： H04L12/26 , H04L12/56 , H04L12/66 , H04L29/14
CPC分类号： H04L43/50 , H04L43/10 , H04L65/80 , H04L69/40
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。

2. 发明申请

US20050002400A1 System and method for notification of internet users about faults detected on an IP network 有权
标题翻译：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
IPC分类号： H04L12/24 , H04L29/06 , H04L29/14 , H04L12/56
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。

3. 发明申请

US20070177579A1 Coding and packet distribution for alternative network paths in telecommunications networks 有权
标题翻译：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。

4. 发明申请

US20070081460A1 Evaluating quality of service in an IP network with cooperating relays 有权
标题翻译：用合作继电器评估IP网络中的服务质量
公开(公告)号：US20070081460A1
公开(公告)日：2007-04-12
申请号：US11329933
申请日：2006-01-11
申请人： Bengi Karacali-Akyamac , Mark Karol , Anjur Krishnakumar , P. Krishnan , Jean Meloche
发明人： Bengi Karacali-Akyamac , Mark Karol , Anjur Krishnakumar , P. Krishnan , Jean Meloche
IPC分类号： H04L12/26
CPC分类号： H04L45/26 , H04L41/5038 , H04L43/12 , H04L45/00 , H04L47/11 , H04L47/24
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。

5. 发明申请

US20080080540A1 Evaluating Feasible Transmission Paths in a Packet Network 有权
标题翻译：评估分组网络中的可行传输路径
公开(公告)号：US20080080540A1
公开(公告)日：2008-04-03
申请号：US11765242
申请日：2007-06-19
申请人： Bengi Karacali-Akyamac , Mark John Karol , P. Krishnan , Jean Meloche
发明人： Bengi Karacali-Akyamac , Mark John Karol , P. Krishnan , Jean Meloche
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L43/00 , H04L43/0823 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L45/22 , H04L45/3065
摘要： A technique is disclosed that attempts to improve the evaluation of a network path's signal quality, as well as the selection of a network path for transmission purposes, without some of the costs and disadvantages of doing so in the prior art. In accordance with the illustrative embodiment, a node with access to the packet network, such as a VoIP telephone endpoint, evaluates the quality of service that is associated with each of multiple network paths. The evaluation process is iterative, in which the number of candidate paths is successively reduced from one iteration of the technique to the next. The multiple paths that remain as candidates in any given iteration are evaluated concurrently and at an evaluation bit rate that i) is less than the full transmission rate of the real-time traffic (VoIP) packets to be sent and ii) varies as a function of the number of candidate paths remaining under consideration.
摘要翻译：公开了一种技术，其尝试改进对网络路径的信号质量的评估，以及用于传输目的的网络路径的选择，而不是在现有技术中这样做的一些成本和缺点。根据说明性实施例，具有诸如VoIP电话端点的分组网络的访问节点评估与多个网络路径中的每一个相关联的服务质量。评估过程是迭代的，其中候选路径的数量从技术的一次迭代到下一个迭代继续减少。在任何给定迭代中保持作为候选的多个路径被并发地评估，并且在i）小于要发送的实时业务（VoIP）分组的全传输速率的评估比特率下进行评估，ii）作为功能而变化的候选人路数仍在考虑之中。

6. 发明申请

US20050176406A1 Location estimation of wireless terminals in a multi-story environment 有权
标题翻译：无线终端在多层环境中的位置估计
公开(公告)号：US20050176406A1
公开(公告)日：2005-08-11
申请号：US10776588
申请日：2004-02-11
申请人： Anjur Krishnakumar , P. Krishnan
发明人： Anjur Krishnakumar , P. Krishnan
IPC分类号： G01S19/19 , H04L12/28 , H04L12/56 , H04W24/00 , H04W64/00 , H04M1/68
CPC分类号： H04W64/00 , G01S5/02 , H04W24/00
摘要： A method and apparatus are disclosed for estimating the location of a wireless terminal across multiple building floors. The illustrative embodiment determines the floor where the wireless terminal is presently located by using a majority logic-based heuristic. A plurality of signal monitors measure signals from the wireless terminal and provide those signal strength measurements to a location estimation server. Alternatively, the wireless terminal measures signals that are transmitted by a plurality of transmitting signal devices and provides those signal strength measurements to a location estimation server. The location estimation server determines the floor of the wireless terminal in accordance with the illustrative embodiment of the present invention.
摘要翻译：公开了一种用于估计无线终端跨多个楼层的位置的方法和装置。说明性实施例通过使用多数基于逻辑的启发式来确定无线终端当前所在的楼层。多个信号监视器测量来自无线终端的信号，并将这些信号强度测量值提供给位置估计服务器。或者，无线终端测量由多个发送信号装置发送的信号，并将这些信号强度测量提供给位置估计服务器。位置估计服务器根据本发明的说明性实施例来确定无线终端的底线。

7. 发明授权

US07583961B2 Method and apparatus for generating a signal strength model for an access point at an arbitrary location 有权
标题翻译：用于在任意位置生成用于接入点的信号强度模型的方法和装置
公开(公告)号：US07583961B2
公开(公告)日：2009-09-01
申请号：US10834291
申请日：2004-04-28
申请人： Martin Kappes , Anjur S. Krishnakumar , P. Krishnan
发明人： Martin Kappes , Anjur S. Krishnakumar , P. Krishnan
IPC分类号： H04Q7/20
CPC分类号： H04W16/18 , H04W16/20 , H04W24/02
摘要： A method and apparatus are provided for obtaining a signal strength model for an access point at an arbitrary location, q, at a site. Signal strength measurements are obtained for each of n sampling points; the signal strength received at the arbitrary location, q, is computed from each of the sampling points (for example, using reciprocity principles); signal strength estimates corresponding to the signal received at the sampling points from the arbitrary location are computed; and a signal strength model is determined for an access point positioned at the arbitrary location, q.
摘要翻译：提供了一种方法和装置，用于在现场的任意位置q获得接入点的信号强度模型。对于n个采样点中的每一个获得信号强度测量; 从任意位置接收的信号强度q从每个采样点计算（例如，使用互易原理）; 计算与从任意位置的采样点接收的信号相对应的信号强度估计值; 并且为位于任意位置的接入点q确定信号强度模型。

8. 发明申请

US20090031399A1 Method and Apparatus for Content Based Authentication for Network Access 审中-公开
标题翻译：用于网络访问的基于内容的认证的方法和装置
公开(公告)号：US20090031399A1
公开(公告)日：2009-01-29
申请号：US12243390
申请日：2008-10-01
申请人： Martin Kappes , P. Krishnan
发明人： Martin Kappes , P. Krishnan
IPC分类号： G06F21/00
CPC分类号： H04L63/08 , H04L63/0876 , H04W12/06
摘要： A method and apparatus are provided for authenticating the contents of a device requesting access to a first network, such as an enterprise network. If a device has connected to at least one other network then the content of the device is evaluated prior to obtaining access. The scope of the content evaluation may be based, for example, on properties of the other network or on one or more defined content authentication rules. If a device attempts to access a network, the content of the device is evaluated and the device may be restricted to accessing only one or more restoration services if the content fails to satisfy one or more predefined criteria, such as a content item that is out of date or a determination that the device connected to one or more external networks. The restoration service(s) can update a content item that is out of date, reinstall one or more programs or return configuration settings to default values.
摘要翻译：提供了一种用于认证请求接入诸如企业网络的第一网络的设备的内容的方法和装置。如果设备已经连接到至少一个其他网络，则在获得访问之前对设备的内容进行评估。内容评估的范围可以例如基于另一网络的属性或基于一个或多个定义的内容认证规则。如果设备尝试访问网络，则评估设备的内容，并且如果内容不能满足一个或多个预定义的标准（例如，出口的内容项目），则设备可能被限制为仅访问一个或多个恢复服务或确定设备连接到一个或多个外部网络。恢复服务可以更新过期的内容项目，重新安装一个或多个程序或将配置设置返回到默认值。

9. 发明申请

US20080201418A1 Web-Based Sharing of Documents 有权
标题翻译：基于Web的文件共享
公开(公告)号：US20080201418A1
公开(公告)日：2008-08-21
申请号：US11676938
申请日：2007-02-20
申请人： P. Krishnan , Jean Meloche
发明人： P. Krishnan , Jean Meloche
IPC分类号： G06F15/16
CPC分类号： H04L67/02 , G06F17/30861 , G06F17/30876 , G06F17/30884 , H04L61/30
摘要： A technique is disclosed that enables telecommunications endpoints to conveniently share the addressing information—that is, the Uniform Resource Identifiers (URI)—of documents that are available on the World Wide Web. In particular, a server is used to provide a bookmark service. The server acts as a repository of tag-URI pairs, in which each tag functions as a shorthand label for the corresponding URI. In the disclosed technique, a first user creates the tag for the intended URI by assigning a keyword to represent the URI as part of a bookmark tag-URI pair that the server stores. The created tag is presumably shorter than the URI that it represents, making the tag more convenient to use. A second user is then able to retrieve and use the URI by specifying the tag to the bookmark server. In essence, the technique of the illustrative embodiment enables the sharing of Web documents by sharing the bookmarks to those documents.
摘要翻译：公开了一种技术，其使得电信端点能够方便地共享在万维网上可用的文档的寻址信息 - 即统一资源标识符（URI）。特别地，服务器用于提供书签服务。服务器充当标签URI对的存储库，其中每个标签用作相应URI的简写标签。在所公开的技术中，第一用户通过分配一个关键字来表示该URI作为服务器存储的书签标签 - URI对的一部分来创建用于所需URI的标签。创建的标签可能比它所代表的URI短，使标签更方便使用。然后，第二个用户能够通过向书签服务器指定标签来检索和使用URI。实质上，说明性实施例的技术能够通过将这些文档共享书签来共享Web文档。

10. 发明申请

US20080155520A1 Peer-to-peer overlay graph construction 有权
标题翻译：对等覆盖图构造
公开(公告)号：US20080155520A1
公开(公告)日：2008-06-26
申请号：US11586709
申请日：2006-10-26
申请人： Jean Meloche , Shalini Yajnik , P. Krishnan , Stanko Dimitrov , Colin L. Mallows , Jon Bentley
发明人： Jean Meloche , Shalini Yajnik , P. Krishnan , Stanko Dimitrov , Colin L. Mallows , Jon Bentley
IPC分类号： G06F9/45
CPC分类号： H04L41/12 , H04L41/06 , H04L43/0811
摘要： Systems and methods for constructing and maintaining a peer-to-peer overlay graph are disclosed herein. The systems and methods include adding a node to the overlay graph. Adding the node includes choosing an edge that is not connected to the node, breaking the edge and connecting the node to broken edge nodes previously connected to the edge. The process is repeating if additional connections are need and node addition data is stored for the node.
摘要翻译：本文公开了用于构建和维护对等覆盖图的系统和方法。系统和方法包括将一个节点添加到重叠图。添加节点包括选择未连接到节点的边缘，破坏边缘并将节点连接到先前连接到边缘的断裂边缘节点。如果需要附加连接并且为节点存储节点添加数据，则该过程正在重复。

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