Remote node and network architecture and data transmission method for a fiber-optic network, especially for low bit-rate data transmission
First Claim
1. A remote node device for use in a fiber-optic network, for low bit-rate data transmission, the fiber-optic network having a central node;
- and a plurality of remote nodes serially connected to each other or to the central node, respectively, the central node and the remote nodes being configured for communicating by means of digital optical signals created by the central node or a respective remote node, each digital optical signal comprising a data frame, the remote node constructed wherein;
(a) the remote node comprises an optical connection network, a single transceiver device comprising an optical receiver unit and an optical transmitter unit, and an electronic controller device for controlling the transceiver device;
(b) the optical connection network comprises a western optical connection port, an eastern optical connection port, an internal optical receiving port being connected to the optical receiver unit and an internal optical transmitting port being connected to the optical transmitter unit;
(c) the controller device, the transceiver device and the optical connection network being constructed such that;
(i) the controller device is operable to create at least one data frame for transmitting information from the remote node to the central node or a further selected remote node, the at least one data frame including content data supplied to the controller device and address data for addressing the central node, and the controller device further operable to control the optical transmitter unit such that a digital optical transmit signal according to the at least one data frame is created, the digital optical transmit signal being simultaneously supplied to the eastern and western optical connection port;
(ii) for receiving information from the central node or a further selected remote node, the receiver unit is operable to receive a respective digital optical transmit signal created by the central node or the further selected further remote node or a digital optical echo signal created by another remote node, which is supplied to the western or eastern optical connection port, and which comprises at least one data frame including content data and address data for addressing the remote node, with at least a given power portion at the internal optical receiving port, and the controller device is operable to process the respective at least one data frame; and
(iii) for regenerating a digital optical transmit or regenerated signal received, the receiver unit is operable to receive a digital optical transmit signal created by the central node or a remote node or a digital optical regenerated signal created by another remote node, which is supplied to the western or eastern optical connection port and which comprises at least one data frame including content data and address data not addressing the remote node, with at least a given power portion at the internal optical receiving port, and the controller device is operable to create a regenerated data frame including the same content and address data as the received data frame and controls the optical transmitter unit such that a digital optical regenerated signal according to the regenerated data frame is created, the digital optical regenerated signal being simultaneously output to both optical connection ports.
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Accused Products
Abstract
A remote node architecture for a fiber-optic network, especially for low bit-rate data transmission, the fiber-optic network architecture comprises a central node and a plurality of remote nodes serially connected to each other or to the central node, respectively. The central node and the remote nodes are capable of communicating by means of digital optical signals created by the central node or a respective remote node, each digital optical signal comprising a data frame. The remote node comprises an optical connection network, a single transceiver device comprising an optical receiver unit and an optical transmitter unit, and an electronic controller device for controlling the transceiver device. The optical connection network defines a western optical connection port, an eastern optical connection port, an internal optical receiving port being connected to the optical receiver unit and an internal optical transmitting port being connected to the optical transmitter unit.
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Citations
13 Claims
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1. A remote node device for use in a fiber-optic network, for low bit-rate data transmission, the fiber-optic network having a central node;
- and a plurality of remote nodes serially connected to each other or to the central node, respectively, the central node and the remote nodes being configured for communicating by means of digital optical signals created by the central node or a respective remote node, each digital optical signal comprising a data frame, the remote node constructed wherein;
(a) the remote node comprises an optical connection network, a single transceiver device comprising an optical receiver unit and an optical transmitter unit, and an electronic controller device for controlling the transceiver device; (b) the optical connection network comprises a western optical connection port, an eastern optical connection port, an internal optical receiving port being connected to the optical receiver unit and an internal optical transmitting port being connected to the optical transmitter unit; (c) the controller device, the transceiver device and the optical connection network being constructed such that; (i) the controller device is operable to create at least one data frame for transmitting information from the remote node to the central node or a further selected remote node, the at least one data frame including content data supplied to the controller device and address data for addressing the central node, and the controller device further operable to control the optical transmitter unit such that a digital optical transmit signal according to the at least one data frame is created, the digital optical transmit signal being simultaneously supplied to the eastern and western optical connection port; (ii) for receiving information from the central node or a further selected remote node, the receiver unit is operable to receive a respective digital optical transmit signal created by the central node or the further selected further remote node or a digital optical echo signal created by another remote node, which is supplied to the western or eastern optical connection port, and which comprises at least one data frame including content data and address data for addressing the remote node, with at least a given power portion at the internal optical receiving port, and the controller device is operable to process the respective at least one data frame; and (iii) for regenerating a digital optical transmit or regenerated signal received, the receiver unit is operable to receive a digital optical transmit signal created by the central node or a remote node or a digital optical regenerated signal created by another remote node, which is supplied to the western or eastern optical connection port and which comprises at least one data frame including content data and address data not addressing the remote node, with at least a given power portion at the internal optical receiving port, and the controller device is operable to create a regenerated data frame including the same content and address data as the received data frame and controls the optical transmitter unit such that a digital optical regenerated signal according to the regenerated data frame is created, the digital optical regenerated signal being simultaneously output to both optical connection ports. - View Dependent Claims (2, 3, 4, 5, 6)
- and a plurality of remote nodes serially connected to each other or to the central node, respectively, the central node and the remote nodes being configured for communicating by means of digital optical signals created by the central node or a respective remote node, each digital optical signal comprising a data frame, the remote node constructed wherein;
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7. A fiber-optic network system, for a fiber-optic sensor network requiring low data transmission bit-rates, the system comprising:
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a central node including an optical connection port and a plurality of remote nodes, each remote node including a western and eastern optical connection port the central node and the remote nodes connected in series to each other; the central node and each of the remote nodes being capable of communicating by means of digital optical signals created by the central node or a respective remote node, each digital optical signal comprising at least one data frame including content data and address data; and each of the remote nodes is constructed wherein; (a) the remote node comprises an optical connection network, a single transceiver device comprising an optical receiver unit and an optical transmitter unit, and an electronic controller device for controlling the transceiver device; (b) the optical connection network comprises a western optical connection port, an eastern optical connection port, an internal optical receiving port being connected to the optical receiver unit and an internal optical transmitting port being connected to the optical transmitter unit; (c) the controller device, the transceiver device and the optical connection network being constructed such that; (i) the controller device is operable to create at least one data frame for transmitting information from the remote node to the central node or a further selected remote node, the at least one data frame including content data supplied to the controller device and address data for addressing the central node, and the controller device further operable to control the optical transmitter unit such that a digital optical transmit signal according to the at least one data frame is created, the digital optical transmit signal being simultaneously supplied to the eastern and western optical connection port; (ii) for receiving information from the central node or a further selected remote node, the receiver unit is operable to receive a respective digital optical transmit signal created by the central node or the further selected further remote node or a digital optical echo signal created by another remote node, which is supplied to the western or eastern optical connection port, and which comprises at least one data frame including content data and address data for addressing the remote node, with at least a given power portion at the internal optical receiving port, and the controller device is operable to process the respective at least one data frame; and (iii) for regenerating a digital optical transmit or regenerated signal received, the receiver unit is operable to receive a digital optical transmit signal created by the central node or a remote node or a digital optical regenerated signal created by another remote node, which is supplied to the western or eastern optical connection port and which comprises at least one data frame including content data and address data not addressing the remote node, with at least a given power portion at the internal optical receiving port, and the controller device is operable to create a regenerated data frame including the same content and address data as the received data frame and controls the optical transmitter unit such that a digital optical regenerated signal according to the regenerated data frame is created, the digital optical regenerated signal being simultaneously output to both optical connection ports. - View Dependent Claims (8, 9)
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10. A method for transmitting digital data in a fiber-optic network, especially for low bit-rate data transmission, the network (1) comprising a central node (3, 7) including an optical connection port (13) and a plurality of remote nodes (5), each remote node (5) including a western and eastern optical connection port (11, 9), the central node (3, 7) and the remote nodes (5) connected in series to each other by means of a fiber-optic path forming a fiber-optic chain-like structure, the method comprising the steps of:
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(a) creating, in the central node (3, 7), a digital optical transmit signal addressed to a selected remote node (5) and outputting the digital optical signal to the fiber-optic path in direction of the selected remote node (5), or creating, in a selected remote node (5), a digital optical transmit signal addressed to the central node (3, 7) or to a further remote node (5) and outputting the digital optical signal in both directions to the fiber-optic path connected to the western and eastern optical connection ports (11, 9), the digital optical transmit signal created in the central node (3, 7) or the selected remote node (5) comprising at least one data frame including content data and address data, (b) in each of the remote nodes (5) in the path between the selected remote node (5) and the central node (3, 7); (i) receiving the digital optical transmit signal or a regenerated optical signal created by a neighboring remote node (5), (ii) creating a regenerated signal that is output in both directions, the regenerated optical signal comprising at least one data frame and including identical content data and address data and further including marker data identifying the regenerated optical signal as having been regenerated by the respective remote node, and (iii) suppressing the creation of a regenerated optical signal if the optical transmit signal or the regenerated optical signal received is detected as already being marked as having been regenerated by the respective remote node. - View Dependent Claims (11, 12, 13)
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Specification