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1. 发明申请

US20020097674A1 System and method for call admission control 审中-公开
标题翻译：呼叫准入控制系统和方法
公开(公告)号：US20020097674A1
公开(公告)日：2002-07-25
申请号：US09952327
申请日：2001-09-13
申请人： Narad Networks, Inc.
发明人： Srinivas Balabhadrapatruni , Gautam Desai , Prasad Dorbala , Ravi S. Kumar , Srinivas Loke , Sanjiv Nanda , Kiran M. Rege , Prashant Saxena , Manas Tandon
IPC分类号： H04L001/00
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2876 , H04L12/4641 , H04L29/12216 , H04L41/12 , H04L41/5022 , H04L41/5035 , H04L41/5054 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/24 , H04L47/2416 , H04L47/2425 , H04L47/2441 , H04L47/2491 , H04L47/32 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04Q3/0045
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Connections are established by a call admission control (CAC) server which determines utilization, computes required bandwidth and selectively allows additional connections based on available bandwidth. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements to take advantage of existing network configurations. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.
摘要翻译：混合光纤/同轴电缆网络采用用于有线电视的现有电缆设备，并以高于用于有线电视的频率带宽传输数据信号。由于该电缆厂部署在树型和分支拓扑结构中，数据传输可能会受到噪声，可变传输损耗和频率分散的影响，特别是在上行方向。此外，由于树和分支拓扑，网络远端的家庭比靠近头端/ ONU的家庭遭受更大的损失。该系统使用位于馈线/分配网络中的智能网络元件之间的点对点数据链路来提供可靠，安全的双向宽带接入。连接由确定利用率的呼叫许可控制（CAC）服务器建立，计算所需带宽并且基于可用带宽选择性地允许附加连接。数字信号在智能网络元件处被终止，被切换和再生以用于在将家庭连接到头端或路由器所需的附加上游或下游数据链路上传输。智能网络元件可以与标准网络元件共同定位或替换，以利用现有的网络配置。以这种方式，数据链路通过相对较短的同轴电缆运行进行，这可以提供比归属和前端或光网络单元之间的典型端到端馈线/分配连接更大的带宽。

2. 发明申请

US20020178252A1 Extensible service provisioning engine 审中-公开
标题翻译：可扩展服务供应引擎
公开(公告)号：US20020178252A1
公开(公告)日：2002-11-28
申请号：US10143728
申请日：2002-05-08
申请人： Narad Networks, Inc.
发明人： Srinivas Balabhadrapatruni , Prasad Dorbala , Satish L. Yellanki , Sunil K. Kotagiri , Srinivas Loke , Charles Bear , Ravi S. Kumar , Vikram Saksena
IPC分类号： G06F015/16 , G06F015/173
CPC分类号： H04L41/5054 , H04L41/22 , H04L41/5087 , H04L41/509
摘要： In a network system, services are provided to users via network interconnections from a service provider. Such services include data, voice, video, and others, and are typically implemented and/or initiated via an interconnection from a network node operated by the service provider to customer premises equipment (CPE) operable to receive the service. Service provisioning includes identifying the service to be provided, identifying the CPE to receive the service, and the determining the manner in which the service is to be provided. In an execution environment such as a hybrid fiber-coax (HFC) network, service deployment time and cost, and maintenance are reduced, and reliability increased, by an executable element generator operable to generate workflow definition files, such as an XML (Extensible Markup Language) script. A plurality of services are defined according to a workflow model, in which each of the services corresponds to one or more of the executable scripts. A service provisioning engine such as a workflow manager is operable to execute the executable scripts for providing the corresponding service via the network. The service provisioning engine reads the executable scripts from a common repository such as an LDAP directory, and provides or initiates the service by communicating, via the network, with the CPE.
摘要翻译：在网络系统中，通过来自服务提供商的网络互连向用户提供服务。这样的服务包括数据，语音，视频和其他，并且通常通过从由服务提供商操作的网络节点到可操作以接收服务的客户驻地设备（CPE）的互连来实施和/或启动。服务提供包括识别要提供的服务，识别用于接收服务的CPE，以及确定要提供服务的方式。在诸如混合光纤同轴（HFC）网络的执行环境中，通过可执行元件发生器可以减少服务部署时间和成本以及维护并提高可靠性，可执行元件发生器可用于生成工作流定义文件，例如XML（可扩展标记语言）脚本。根据工作流模型定义多个服务，其中每个服务对应于一个或多个可执行脚本。诸如工作流管理器之类的服务供应引擎可操作地执行用于经由网络提供对应服务的可执行脚本。服务提供引擎从诸如LDAP目录的公共存储库读取可执行脚本，并通过网络与CPE通信来提供或启动服务。

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