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1.发明授权Method and apparatus for messaging, signaling, and establishing a data link utilizing multiple modes over a multiple access broadband communications network 失效用于在多址宽带通信网络上利用多种模式的消息，信令和建立数据链路的方法和装置
公开(公告)号：US6075787A
公开(公告)日：2000-06-13
申请号：US852971
申请日：1997-05-08
申请人： James D. Bobeck , Edward Alan Clark
发明人： James D. Bobeck , Edward Alan Clark
CPC分类号： H04Q11/0478 , H04L2012/5605 , H04L2012/5606 , H04L2012/563
摘要： The specification relates to a broadband multiple access protocol for bi-directional hybrid fiber/coax (HFC) networks and other shared media networks. The protocol supports downstream broadcast transmission from headend to cable modem, and also provides for allocation of bandwidth for cable modems to transmit back to the headend. The HE transmits and receives control messages in either ATM or VL format, depending upon CM capability, the determination of CM capability ascertained by the HE during the message flows interchanged between HE and CM while establishing a data link. Although the present invention is described in relation to an HFC network, it is also equally applicable to other shared media networks. The protocol supports different data access modes such as STM, ATM, and VL; within each subframe of a subframe/frame/masterframe structure. The protocol adapts to changing demands for a mix of circuit and packet mode applications and allocates upstream and downstream bandwidth in response to the a variety of bursty and isochronous traffic sources. In order to satisfy the quality of service requirements of varied applications, while maintaining high bandwidth efficiency, the protocol utilizes a subframe structure with subframe partitioning into regions; one region dedicated to STM payload transmission, a second region dedicated to ATM cell transmission, and a third region dedicated to VL payload transmissions.
摘要翻译： 该规范涉及用于双向混合光纤/同轴（HFC）网络和其他共享媒体网络的宽带多址协议。 该协议支持从头端到电缆调制解调器的下行广播传输，并且还为电缆调制解调器的带宽分配提供发送回头端。 HE根据CM的能力，以ATM或VL格式发送和接收控制消息，确定在HE和CM间建立数据链路的消息流中HE之间确定的CM能力。 尽管关于HFC网络描述了本发明，但是也可以应用于其他共享媒体网络。 该协议支持不同的数据访问模式，如STM，ATM和VL; 在子帧/帧/主帧结构的每个子帧内。 该协议适应于对电路和分组模式应用的混合的不断变化的需求，并且响应于各种突发和等时业务源来分配上行和下行带宽。 为了满足各种应用的服务质量要求，在保持高带宽效率的同时，协议利用子帧结构，将子帧划分到区域中; 专用于STM有效载荷传输的一个区域，专用于ATM信元传输的第二区域和专用于VL有效载荷传输的第三区域。
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公开(公告)号：US5444693A
公开(公告)日：1995-08-22
申请号：US874773
申请日：1992-04-27
CPC分类号： H04Q3/0079 , H04Q2213/13521 , H04Q2213/13535 , H04Q2213/13565
摘要： Difficulties with prior disrupted communications restoration systems are overcome by employing for each node of a communications network a restoration processor in which predetermined functions of the restoration process are managed by respective ones of a plurality of manager modules. The manager modules are arranged to be directly interconnected only with a so-called restoration manager that coordinates the operations of the modules and provides for their interconnection needs. In a preferred embodiment, four manager modules, a) a user interface manager module, b) a digital cross-connect system (DCS) manager module, c) a distributed communications manager module and d) a core algorithm manager module, are interconnected and coordinated by the restoration manager. Additional robustness to the restoration process is provided by way of enhancements to the functionality of the core algorithm manager module. These enhancements include: a) improved glare processing (resolution of contention for a particular resource), b) "broadcast" of takedown messages, c) elimination of the need for time-outs during automatic restoration, d) a "peek ahead" routine that immediately takes down a needed resource that is already on a list to be taken down, e) use of a "minimax factor" and f) a "quick fix" technique for use in cases of limited failure of circuits between two nodes. The restoration process can also be cascaded so that it sequentially restores one level at a time, the levels being defined by the hierarchy of digital transmission rates employed in the network.
摘要翻译： 通过为通信网络的每个节点采用其中恢复处理的预定功能由多个管理器模块中的相应管理器模块来管理的恢复处理器来克服先前中断的通信恢复系统的困难。 管理器模块被布置为仅与协调模块的操作并提供其互连需求的所谓的恢复管理器直接相互连接。 在优选实施例中，a）用户接口管理器模块，b）数字交叉连接系统（DCS）管理器模块，c）分布式通信管理器模块和d）核心算法管理器模块的四个管理器模块互连， 由修复经理协调。 通过增强核心算法管理器模块的功能来提供对恢复过程的额外的鲁棒性。 这些增强功能包括：a）改进的眩光处理（特定资源的争用解决方案），b）删除消息的“广播”，c）在自动恢复期间消除对超时的需要，d）“向前看” 立即取消已经在列表中被删除的所需资源，e）使用“极小值因子”和f）“快速修复”技术，用于在两个节点之间电路有限故障的情况下。 恢复过程也可以级联，以使其一次顺序恢复一个级别，这些级别由网络中采用的数字传输速率的层级来定义。
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3.发明授权Internet protocol based network architecture for cable television network access with switched fallback 有权基于互联网协议的网络架构，用于有线电视网络接入切换后备公开(公告)号：US08127029B1
公开(公告)日：2012-02-28
申请号：US09477880
申请日：2000-01-05
申请人： Donald Edgar Blahut , James D. Bobeck , Robert William Dalton , Enrique Hernandez-Valencia , Roger Henry Levy , Ronald L. Sharp
发明人： Donald Edgar Blahut , James D. Bobeck , Robert William Dalton , Enrique Hernandez-Valencia , Roger Henry Levy , Ronald L. Sharp
IPC分类号： G06F15/173 , G06F15/16
CPC分类号： H04L12/5692
摘要： A user accesses the Internet through a hybrid data communications system architecture in which upstream service is provided via the local loop of the public switched telephone network (PSTN) and downstream service is provided via a cable television (CATV) network. The Cable Modem Data Termination system (CMTS) includes a routing table. Upon detection of a CATV service interruption, the CMTS re-routes IP traffic destined for a destination IP address (IP1) associated with the user to a different IP address, or endpoint, as a function of the routing table. In this instance, the different IP address is associated with equipment that provides downstream IP service to the user via the local loop of the PSTN.
摘要翻译： 用户通过经由公共交换电话网（PSTN）的本地环路提供上游服务的混合数据通信系统架构来访问因特网，并且经由有线电视（CATV）网络提供下游服务。 有线调制解调器数据终端系统（CMTS）包括路由表。 在检测到CATV服务中断时，CMTS将去往与用户相关联的目的地IP地址（IP1）的IP流量路由到作为路由表的函数的不同IP地址或端点。 在这种情况下，不同的IP地址与通过PSTN的本地环路向用户提供下行IP服务的设备相关联。
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4.发明授权Internet protocol based network architecture for cable television access with switched fallback 失效基于互联网协议的网络架构，用于有线电视接入和切换回退
公开(公告)号：US6065061A
公开(公告)日：2000-05-16
申请号：US991735
申请日：1997-12-16
申请人： Donald Edgar Blahut , James D. Bobeck , Robert William Dalton , Enrique Hernandez-Valencia , Roger Henry Levy , Ronald L. Sharp
发明人： Donald Edgar Blahut , James D. Bobeck , Robert William Dalton , Enrique Hernandez-Valencia , Roger Henry Levy , Ronald L. Sharp
CPC分类号： H04L12/5692
摘要： A user accesses the Internet through a hybrid data communications system architecture in which upstream service is provided via the local loop of the public switched telephone network (PSTN) and downstream service is provided via a cable television (CATV) network. The Cable Modem Data Termination system (CMTS) includes a routing table. Upon detection of a CATV service interruption, the CMTS re-routes IP traffic destined for a destination IP address (IP1) associated with the user to a different IP address, or endpoint, as a function of the routing table. In this instance, the different IP address is associated with equipment that provides downstream IP service to the user via the local loop of the PSTN.
摘要翻译： 用户通过经由公共交换电话网（PSTN）的本地环路提供上游服务的混合数据通信系统架构来访问因特网，并且经由有线电视（CATV）网络提供下游服务。 有线调制解调器数据终端系统（CMTS）包括路由表。 在检测到CATV服务中断时，CMTS将去往与用户相关联的目的地IP地址（IP1）的IP流量路由到作为路由表的函数的不同IP地址或端点。 在这种情况下，不同的IP地址与通过PSTN的本地环路向用户提供下行IP服务的设备相关联。
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公开(公告)号：US5706276A
公开(公告)日：1998-01-06
申请号：US435030
申请日：1995-05-04
CPC分类号： H04Q3/0079 , H04Q2213/13521 , H04Q2213/13535 , H04Q2213/13565
摘要： Difficulties with prior disrupted communications restoration systems are overcome by employing for each node of a communications network a restoration processor in which predetermined functions of the restoration process are managed by respective ones of a plurality of manager modules. The manager modules are arranged to be directly interconnected only with a so-called restoration manager that coordinates the operations of the modules and provides for their interconnection needs. In a preferred embodiment, four manager modules, a) a user interface manager module, b) a digital cross-connect system (DCS) manager module, c) a distributed communications manager module and d) a core algorithm manager module, are interconnected and coordinated by the restoration manager. Additional robustness to the restoration process is provided by way of enhancements to the functionality of the core algorithm manager module. These enhancements include: a) improved glare processing (resolution of contention for a particular resource), b) "broadcast" of takedown messages, c) elimination of the need for time-outs during automatic restoration, d) a "peek ahead" routine that immediately takes down a needed resource that is already on a list to be taken down, e) use of a "minimax factor" and f) a "quick fix" technique for use in cases of limited failure of circuits between two nodes. The restoration process can also be cascaded so that it sequentially restores one level at a time, the levels being defined by the hierarchy of digital transmission rates employed in the network.
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