公开(公告)号：US20240146574A1

公开(公告)日：2024-05-02

申请号：US17974359

申请日：2022-10-26

申请人： Hewlett Packard Enterprise Development LP

发明人： Christopher S. Murray

IPC分类号： H04L12/423 ,  H04L12/46 ,  H04L43/106

CPC分类号： H04L12/423 ,  H04L12/4641 ,  H04L43/106

摘要： A system for identifying the source of a loop in a ring network is provided. During operation, the system receives a first message, which indicates the presence of a looped packet, from a network device of the ring network. The system receives a second message from a respective network device with an uplink to an external network. The second message can include traffic information associated with the uplink. Upon determining based on the first message that a local link intended to be disabled is active, the system determines that a loop is present in the ring network. Upon determining that a plurality of uplinks are active based on the second message, the system determines that a loop is present in the uplinks. If a loop is not present in the ring network or in the uplinks, the system determines that a loop is present in the external network.

公开(公告)号：US10958996B2

公开(公告)日：2021-03-23

申请号：US16087739

申请日：2017-03-30

申请人： British Telecommunications Public Limited Company

发明人： Anas Al Rawi ,  Leslie Humphrey ,  Trevor Morsman

IPC分类号： H04B10/00 ,  H04Q11/00 ,  H04L12/423

摘要： A telecommunications access network comprises a primary aggregation point in the form of an exchange, a plurality of optic fiber to metallic pair interface aggregation points which may be in the form of Distribution Point Units (DPUs) each of which is connected to the primary aggregation point by a respective optical fiber connection, and a plurality of terminating devices which may be in the form of customer premises equipment (CPE) devices, each of which is connected to a respective one of the optic fiber to metallic pair interface aggregation points by a respective twisted metallic pair connection. The access network further includes a plurality of metallic, interface-interface connections between one or more pairs of the optic fiber to metallic pair interface aggregation points. Each metallic, interface-interface connection preferably comprises three or more twisted metallic pairs of wires.

公开(公告)号：US10812289B2

公开(公告)日：2020-10-20

申请号：US16080598

申请日：2016-03-18

申请人： Hewlett Packard Enterprise Development LP

发明人： Christopher Murray

IPC分类号： H04L12/423 ,  H04L12/46 ,  H04L29/06 ,  H04L12/28 ,  H04L12/42

摘要： An example communications device may include communication ports and processing circuitry. The communications device may, when the communication device and peer network nodes are connected in a ring topology to form an access network, detect that a loop exists between the access network and a customer network. In response to detecting the loop, the communication device may automatically block any uplink to the customer network that the communication device may have, and send a message to all of the peer network nodes instructing them to block any uplinks to the customer network they may have.

公开(公告)号：US10182001B2

公开(公告)日：2019-01-15

申请号：US15281841

申请日：2016-09-30

申请人： B&R INDUSTRIAL AUTOMATION GMBH

发明人： Dietmar Bruckner ,  Franz Prenninger

IPC分类号： H04L12/707 ,  H04L12/423 ,  H04L12/751 ,  H04L12/437 ,  H04L12/40

摘要： In order to be able to maintain cross-traffic between slaves in a ring topology of an Ethernet-based data network even in the event of an error in the ring topology, which leads to the interruption of the ring topology, it is provided that in the event of the occurrence (rectification) of an error (F) in the annular data network (1), the ringmaster is configured to forward data packets or to block at least multicast data packets, and that the master prompts the slaves (S1, S2), communicating with one another via cross-traffic, to transmit configuration data packets (DPMC1, DPMC2) as multicast data packets to each of the other slaves (S1, . . . , Sn) of the annular data network in order to adjust address tables (AT1, AT2) in the slaves (S1, S2), communicating with one another via cross-traffic.

公开(公告)号：US09671773B2

公开(公告)日：2017-06-06

申请号：US14573363

申请日：2014-12-17

申请人： FANUC Corporation

发明人： Masahiro Miura

IPC分类号： G05B19/18 ,  H04L12/28 ,  H04L7/00 ,  H04L12/54 ,  H02P29/00 ,  H04L12/423 ,  H04L12/00 ,  G06F13/42 ,  G06F13/36 ,  G06F13/38 ,  H04L12/52 ,  G06F13/368 ,  G06F13/00 ,  H04L12/40 ,  G05B19/414

CPC分类号： G05B19/18 ,  G05B19/414 ,  G05B2219/33226 ,  G06F13/00 ,  G06F13/36 ,  G06F13/368 ,  G06F13/38 ,  G06F13/4247 ,  H02P29/00 ,  H04L7/00 ,  H04L12/00 ,  H04L12/28 ,  H04L12/40058 ,  H04L12/423 ,  H04L12/52 ,  H04L12/54 ,  H04L12/56

摘要： In a numerical control system in which a numerical controller is connected with a plurality of amplifiers via a daisy-chain serial bus, these amplifiers are grouped into a first group and a second group, and connected in an order of the amplifiers of the first group and the amplifiers of the second group from the numerical controller. Further, a communication cycle in the communication between the numerical controller and the amplifiers of the second group is set n times (n is an integer of 2 or larger) as large as a communication cycle of the first group.

公开(公告)号：US09608839B2

公开(公告)日：2017-03-28

申请号：US14527385

申请日：2014-10-29

申请人： Oracle International Corporation

发明人： Jurgen Schulz ,  Vishak Chandrasekhar ,  Yu-cheng Chiu

IPC分类号： H04L12/423 ,  H04L12/24

CPC分类号： H04L12/423 ,  H04L41/0803

摘要： A system, comprising: a first local controller (LC) having a first position in a ring network and comprising a first LC cycle counter; a second LC having a second position in the ring network and comprising a second LC cycle counter; and a central controller (CC) connected to the ring network and comprising: a data structure linking the first LC to the first position and linking the second LC to the second position; and a CC cycle counter.

公开(公告)号：US20170070363A1

公开(公告)日：2017-03-09

申请号：US14848233

申请日：2015-09-08

申请人： Oracle International Corporation

发明人： John E. Watkins ,  Joseph R. Wright

IPC分类号： H04L12/423 ,  H04L12/823 ,  H04L12/933 ,  H04L12/861 ,  H04L12/801 ,  H04L29/06 ,  H04L12/879

CPC分类号： H04L12/423 ,  G06F13/00 ,  H04L47/32 ,  H04L47/39 ,  H04L49/15 ,  H04L49/901 ,  H04L49/9084 ,  H04L69/22 ,  H04L69/32

摘要： A system that includes a PCIe hierarchy may utilize a ring controller for message handling. Nodes acting as the root complex or as endpoint devices may include such ring controllers, portions of which may be implemented by dedicated circuitry on each node. The ring controllers may receive posted transactions representing messages, may return flow control credits for those transactions, may classify each message as to its type, and may write information about each message to a respective ring buffer storing information about messages of that type. A processor (or processing logic/circuitry) on the node may subsequently retrieve messages from the ring buffers and process them. The sizes and locations of the ring buffers in memory may be configurable by software (e.g., by writing to registers within the ring controllers). The message types may include correctable and non-correctable error messages, and non-error messages (including, but not limited to, vendor-defined messages).

摘要翻译： 包括PCIe层次结构的系统可以利用环形控制器进行消息处理。 充当根复合体或作为端点设备的节点可以包括这样的环控制器，其中的一部分可以由每个节点上的专用电路来实现。 环形控制器可以接收表示消息的发布的事务，可以返回这些事务的流量控制信用，可以将每个消息分类为其类型，并且可以将关于每个消息的信息写入存储关于该类型的消息的信息的相应环形缓冲区。 节点上的处理器（或处理逻辑/电路）可随后从环形缓冲器中检索消息并处理它们。 存储器中的环形缓冲器的大小和位置可以由软件（例如，通过写入到环形控制器内的寄存器）来配置。 消息类型可能包括可纠正和不可纠正的错误消息以及非错误消息（包括但不限于供应商定义的消息）。

公开(公告)号：US09565032B2

公开(公告)日：2017-02-07

申请号：US14559429

申请日：2014-12-03

申请人： QUALCOMM Incorporated

发明人： Richard Gerard Hofmann ,  Ryan Wells ,  Vijay Nagaraj ,  Prudhvi Nadh Nooney

IPC分类号： H04L12/26 ,  H04L12/40 ,  H04L12/423

CPC分类号： H04L12/4013 ,  H04L12/423 ,  H04L43/16

摘要： Systems and methods for relate to bus ring performance monitoring and control. A bus ring includes an agent and a switch unit to connect the agent to the bus ring. The switch unit includes a transmit queue to store data from the bus ring to be transmitted to the agent and a receive queue to store data from the agent to be transmitted to the bus ring. A first counter is implemented to track a number of pending transactions in the transmit queue and a second counter is implemented to track a number of times the receive queue is full and unable to accept additional data. Frequency of the bus ring is increased or decreased based on comparison of values of the first counter and the second counter with corresponding predefined high and low threshold values.

摘要翻译： 与总线环性能监测和控制相关的系统和方法。 总线环包括代理和用于将代理连接到总线环的交换单元。 交换单元包括发送队列，用于存储来自总线环的数据以发送到代理，以及接收队列，用于存储来自代理的数据以发送到总线环。 实现第一计数器以跟踪发送队列中的多个待处理事务，并且实现第二计数器以跟踪接收队列已满并且不能接受附加数据的次数。 基于第一计数器和第二计数器的值与相应的预定义的高和低阈值的比较来增加或减少总线环的频率。

公开(公告)号：US20170019269A1

公开(公告)日：2017-01-19

申请号：US14798545

申请日：2015-07-14

申请人： Silicon Laboratories Inc.

发明人： Aaron J. Caffee

IPC分类号： H04L12/423

CPC分类号： H04L12/423

摘要： Techniques for reducing error in time-of-flight measurement due to transceiver latency are disclosed. A method includes determining a first indicator of a first latency of a first transceiver of a first system using a first loopback configuration of the first transceiver. The method includes receiving a second indicator of a second latency of a second transceiver determined by a second system using a second loopback configuration of the second transceiver. The method includes determining a third indicator of a roundtrip latency of a communication from the first transceiver to the second transceiver and back to the first transceiver. The method includes determining a time-of-flight between the first system and the second system based on the first indicator, the second indicator, and the third indicator.

摘要翻译： 披露了由于收发器延迟而减少飞行时间测量误差的技术。 一种方法包括使用第一收发器的第一回送配置来确定第一系统的第一收发器的第一等待时间的第一指示符。 该方法包括使用第二收发器的第二回送配置来接收由第二系统确定的第二收发器的第二等待时间的第二指示符。 该方法包括确定从第一收发器到第二收发器的通信的往返延迟的第三指示符，并且返回到第一收发器。 该方法包括基于第一指示符，第二指示符和第三指示符来确定第一系统和第二系统之间的飞行时间。

公开(公告)号：US09529746B2

公开(公告)日：2016-12-27

申请号：US14347890

申请日：2012-09-19

申请人： ROBERT BOSCH GMBH

发明人： Andreas-Juergen Rohatschek ,  Dieter Thoss ,  Thorsten Huck ,  Stoyan Todorov

IPC分类号： G06F13/26 ,  H04L12/423

CPC分类号： G06F13/26 ,  H04L12/423

摘要： A method for transmitting frames containing data between users of a ring-shaped communication system which has a master and at least one slave as users. Each user has at least one interrupt register, and one field of the at least one interrupt register is associated with an interrupt request and includes a value for an interrupt bit. An interrupt request which includes the interrupt bit is transmitted to the master by a slave in a frame designed as an empty frame. In addition, the empty frame has a toggle bit for all slaves which indicates the state of an interrupt request.

摘要翻译： 一种用于在具有主设备和至少一个从设备的环形通信系统的用户之间发送包含数据的帧的方法。 每个用户具有至少一个中断寄存器，并且至少一个中断寄存器的一个字段与中断请求相关联并且包括中断位的值。 包含中断位的中断请求在被设计为空帧的帧中由从机发送给主机。 此外，空帧对于所有从站都有一个切换位，指示中断请求的状态。