公开(公告)号：US20030142634A1

公开(公告)日：2003-07-31

申请号：US10328262

申请日：2002-12-23

Applicant: AT&T Corp.

Inventor： Xiaolin Lu

IPC: H04L012/28

CPC classification number: H04L45/04 ,  H04L12/66 ,  H04L45/00 ,  H04L45/62

Abstract: A communication network apparatus and method for routing communication signals from a source device to a receiving device. The apparatus performs only local processing on communication signals to thereby increase the speed of processing the signals. A plurality of the processing nodes are combined into a plurality of sub-networks that comprise the network apparatus. Each processing node of a sub-network need only process address information pertaining to the node's current layer, one layer above it, if any, and one layer below it, if any. Additionally, each processing node has associated communication signal frequencies/wavelengths that identify the processing node as the intended recipient of the communication signal. When a communication signal having a carrier signal with a frequency/wavelength corresponding to the processing node is received, the processing node demodulates the carrier signal and forwards the communication signal data to a processing module used to process address information to determine how to route the communication signal through the network. Communication signals may be assigned nullexpressnull frequencies/wavelengths, in which case, all of the processing nodes, except the destination processing node, of the network pass the communication signal without performing processing on the communication signal.

Abstract translation: 一种用于将来自源设备的通信信号路由到接收设备的通信网络设备和方法。 该装置仅对通信信号执行本地处理，从而提高处理信号的速度。 多个处理节点被组合成包括网络装置的多个子网络。 子网络的每个处理节点仅需要处理与节点当前层有关的地址信息，如果有的话，则在其上方有一层，如果有的话，则需要一层。 另外，每个处理节点具有将通信信号频率/波长识别为通信信号的预期接收者的处理节点。 当接收到具有与处理节点对应的频率/波长的载波信号的通信信号时，处理节点解调载波信号，并将通信信号数据转发到用于处理地址信息的处理模块，以确定如何路由通信 通过网络发出信号。 通信信号可以被分配“快速”频率/波长，在这种情况下，网络的目的地处理节点除外的所有处理节点都通过通信信号，而不对通信信号进行处理。

公开(公告)号：US20020172219A1

公开(公告)日：2002-11-21

申请号：US10150110

申请日：2002-05-20

Applicant: AT&T CORP.

Inventor： Xiaolin Lu ,  Xiaoxin Qiu

IPC: H04L012/43

CPC classification number: H04L12/413

Abstract: The invention provides a method and apparatus for end-users to allocate a communication medium locally without requiring a central arbitration device while guaranteeing access to the end-users. The end-users bid for control of an upstream data channel by concurrently transmitting auction data and address data on a first upstream signaling channel and a second upstream signaling channel. An end-user gains control of the upstream data channel when data received from the first and second downstream signaling channels match the auction and address bits. When it is determined that the end-user lost the bid, the end-user backs off from the first and second upstream signaling channels and refrains from bidding until the first and second upstream signaling channels become quiet.

公开(公告)号：US20010038611A1

公开(公告)日：2001-11-08

申请号：US09905955

申请日：2001-07-17

Applicant: AT&T Corp.

Inventor： Thomas Edward Darcie ,  Alan H. Gnauck ,  Xiaolin Lu

IPC: G06F011/00

CPC classification number: H04L43/00 ,  H04L43/0817

Abstract: A monitoring apparatus and method are provided for a communication system in which a central office communicates to at least one end unit using intermediate remote nodes. The remote node receives signals from both the central office and the end units. Each remote node can be equipped with apparatus for monitoring the integrity of paths of the communication system. The monitoring apparatus can include a mixing device that mixes received signals to produce combined signals. The received signals generally include a pilot signal sent from the central office and a data signal sent from the at least one end unit. The state of the communication system is analyzed based on the combined signals. If the combined signals includes only the data signal from the end unit, the path through which the pilot signal was sent is inoperative. If the combined signals includes only the pilot signal, the transmission path from the end unit over which the data signal is sent is inoperative. If the combined signals are not received at the central office after transmission of the pilot signal, a determination is made that any part of transmission path could be inoperative.

Abstract translation: 提供了一种用于通信系统的监视装置和方法，其中中心局使用中间远程节点与至少一个终端单元进行通信。 远程节点接收来自中心局和终端单元的信号。 每个远程节点可以配备有用于监视通信系统的路径的完整性的装置。 监视装置可以包括混合装置，其混合接收到的信号以产生组合信号。 所接收的信号通常包括从中心局发送的导频信号和从至少一个终端单元发送的数据信号。 基于组合信号分析通信系统的状态。 如果组合信号仅包括来自端单元的数据信号，则导频信号被发送的路径不起作用。 如果组合信号仅包括导频信号，则从发送数据信号的终端单元的传输路径不起作用。 如果在发送导频信号之后在中心局没有接收到组合信号，则确定传输路径的任何部分可能不起作用。