Method and system for exchanging real time data in a ring network

    公开(公告)号:US11411768B2

    公开(公告)日:2022-08-09

    申请号:US17047675

    申请日:2019-04-15

    摘要: The invention pertains to communication among stations interconnected by a ring of physical links, operating at a base symbol rate. Each station has an upstream and a downstream link and relays messages originating from the upstream link to its downstream link. Logical links are provided on the ring, each associated with a symbol rate divisor and a link index. Each station transmits messages composed of a strings of symbols on a selected logical link by transmitting the message on its downstream link at the base symbol rate divided by the symbol rate divisor associated with the selected logical link, and offset by the link index of the selected logical link. A station generates a first synchronizing sequence on its downstream link at the base symbol rate divided by the symbol rate divisor associated with a first logical link not used for data, and offset by the link index of the first logical link, and a second synchronizing sequence at the base symbol rate divided by the symbol rate divisor associated with a second logical link not used for data, and offset by the link index of the second logical link.

    Providing dynamic routing alternatives based on determined traffic conditions

    公开(公告)号:US10581634B2

    公开(公告)日:2020-03-03

    申请号:US15669402

    申请日:2017-08-04

    摘要: Methods, devices, and systems are provided to determine traffic conditions along a traffic path and dynamically present one or more entities with at least one alternate route. The alternate route is determined based on a number of entities along the traffic path and available routing points adjacent to the traffic conditions. The alternate route may be configured to optimize traffic for an entire traffic system rather than only optimizing traffic for receivers of the alternate routes. Data relating to the alternate routes presented to the entities can be tracked. This data may be used to evaluate an effectiveness of the routing decisions made. Effectiveness can be measured in cost and time saved or spent. Information, such as the data, determinations of the data, and/or even effectiveness of alternate routes, can be distributed to one or more parties. Distribution of the information may be associated with a tiered cost structure.

    Communication device and communication system

    公开(公告)号:US10581622B2

    公开(公告)日:2020-03-03

    申请号:US15566924

    申请日:2016-03-24

    IPC分类号: H04L12/10 H04L12/42 H04L12/43

    摘要: A communication device that performs bidirectional multiplex communication between a plurality of slave communication devices and the communication device is provided with: a first port connected to one end section of a transmission line to which the slave communication devices are connected; a second port connected to the other end section of the transmission line; and a current detection unit connected to the first port and the second port. An operation voltage is supplied from the communication device to the slave communication devices, a change of the quantity of a current flowing in the first port and/or the second port is detected by means of the current detection unit, and on the basis of the current quantity change, occurrence of disconnection in the transmission line is detected.

    Traffic-aware slot assignment
    5.
    发明授权

    公开(公告)号:US10420101B2

    公开(公告)日:2019-09-17

    申请号:US15721298

    申请日:2017-09-29

    申请人: Intel Corporation

    摘要: Aspects of traffic aware slot assignment are described, for example, in a multi-hop wireless network comprising a plurality of nodes. In some aspects, an apparatus of a wireless device is configured to decode signaling, received from a node of the multi-hop network, to determine an indication of a change to a topology of the multi-hop network. The apparatus is further configured to, in response to a determination, from the decoded signaling, of an addition of a second node to the multi-hop network topology, increment a total of a number of descendant nodes, and allocate one or more transmission slots to a number of unused slots in one or more transmission opportunity regions of a slotframe, wherein the slotframe includes a repeating pattern of one or more transmission opportunity periods for a plurality of nodes in the network.

    Technologies for scalable packet reception and transmission

    公开(公告)号:US10341264B2

    公开(公告)日:2019-07-02

    申请号:US15199110

    申请日:2016-06-30

    申请人: Intel Corporation

    摘要: Technologies for scalable packet reception and transmission include a network device. The network device is to establish a ring that is defined as a circular buffer and includes a plurality of slots to store entries representative of packets. The network device is also to generate and assign receive descriptors to the slots in the ring. Each receive descriptor includes a pointer to a corresponding memory buffer to store packet data. The network device is further to determine whether the NIC has received one or more packets and copy, with direct memory access (DMA) and in response to a determination that the NIC has received one or more packets, packet data of the received one or more packets from the NIC to the memory buffers associated with the receive descriptors assigned to the slots in the ring.

    PROTECTION PATH DETERMINATION METHOD AND DEVICE BASED ON RESILIENT OPTICAL NETWORK

    公开(公告)号:US20180102864A1

    公开(公告)日:2018-04-12

    申请号:US15578696

    申请日:2016-11-10

    摘要: A protection path determination method and apparatus based on an elastic optical network are provided. The method includes: searching a virtual working topology for a virtual working link satisfying a condition on receipt of a routing request of a target service; updating a residual bandwidth of the virtual working link if the virtual working link is found; otherwise, creating a working link for the target service and creating a virtual working link in the virtual working topology; searching a virtual protection topology for a virtual protection link satisfying a condition according to a shared path protection mechanism; updating a residual bandwidth of the virtual protection link if the virtual protection link is found; otherwise, creating a protection link for the target service according to the shared path protection mechanism and creating a virtual protection link in the virtual protection topology.

    Cyclic prefix for non-contiguous signal transmission

    公开(公告)号:US09735993B2

    公开(公告)日:2017-08-15

    申请号:US13588687

    申请日:2012-08-17

    IPC分类号: H04L12/43 H04L27/26

    CPC分类号: H04L27/2607

    摘要: Transmitted signals are modified to facilitate the emulation of circular convolution in non-contiguous transmission environments. These modified signals may be derived from well-known signature sequences. In an exemplary method, a tail portion of a final segment of a base signal is prefixed to an initial segment of the base signal, to form a first transmit segment. One or more additional transmit segments are formed by prefixing, to each of the one or more segments of the base signal other than the initial segment, a tail portion of the immediately preceding segment of the base signal. The transmit segments so formed are transmitted in respective ones of the plurality of non-contiguous transmit-time intervals. Corresponding methods for receiving the transmitted segments and reconstructing the base signal are also described, as are corresponding transmitting and receiving apparatuses.

    Method for monitoring, at the correct time, TT Ethernet messages

    公开(公告)号:US09614744B2

    公开(公告)日:2017-04-04

    申请号:US14362388

    申请日:2012-12-18

    发明人: Stefan Poledna

    IPC分类号: H04L12/26 H04L12/43

    摘要: The invention relates to a method for monitoring, at the correct time, TTEthernet (TT) messages communicated by a TTEthernet switch (TTE switch) in a distributed real-time computer system. According to the invention, the TTE switch has a global time having precision P and accuracy A, and the TTE switch has a plurality of communication channels and one or more monitoring channels, and the TTE switch contains a selection data structure that specifies which TT message classes are to be monitored, and a copy of a TT message which belongs to a TT message class selected for monitoring is formed in the TTE switch and is transmitted by the TTE switch via a monitoring channel to a monitoring node, and the TTE switch subsequently autonomously transmits an ET message containing an identifier and the exact transmission time of the monitored TT message via a monitoring channel to a monitoring node.