Patent EP-2582152-A1 (EP)
Inventor: HINDERTHUER HENNING
IPC: H04Q11/00
Filed: 2011-10-12
Abstract: The invention relates to a remote node architecture for a fiber-optic network, especially for low bit-rate data transmission, the fiber-optic network architecture (1) comprising a central node (3, 7) and a plurality of remote nodes (5) serially connected to each other or to the central node (3,7), respectively, the central node (3, 7) and the remote nodes (5) being capable of communicating by means of digital optical signals created by the central node (3, 7) or a respective remote node (5), each digital optical signal comprising a data frame. The remote node (5) comprises an optical connection network (15, 150), a single transceiver device (17) comprising an optical receiver unit (19) and an optical transmitter unit (21, 210), and an electronic controller device (27) for controlling the transceiver device (17). The optical connection network (15, 150) defines a western optical connection port (11), an eastern optical connection port (9), an internal optical receiving port (23) being connected to the optical receiver unit (19) and an internal optical transmitting port (25) being connected to the optical transmitter unit (21, 210). The controller device (27), the transceiver device (17) and the optical connection network (15, 150) are designed such that for transmitting information from the remote node (5) to the central node (3, 7) or a further selected remote node (5), the controller device (27) creates at least one data frame including content data supplied to the controller device (27) and address data for addressing the central node (3, 7) and controls the optical transmitter unit (21, 210) 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 ports (9, 11). For receiving information from the central node (3, 7) or a further selected remote node (5), the receiver unit (19) receives a digital optical transmit signal created by the central node (3, 7) or the selected further remote node (5) or a digital optical echo signal created by another remote node (5), which is supplied to the western or eastern optical connection port (11, 9) and which comprises at least one data frame including content data and address data for addressing the remote node (5), with at least a given power portion at the internal optical receiving port (23), and the controller device (27) processes the respective at least one data frame. For regenerating a digital optical transmit or regenerated signal received, the receiver unit (19) receives a digital optical transmit signal created by the central node (3, 7) or a remote node (5) or a digital optical regenerated signal created by another remote node (5), which is supplied to the western or eastern optical connection port (11, 9) and which comprises at least one data frame including content data and address data not addressing the remote node (5), with at least a given power portion at the internal optical receiving port (23), and the controller device (27) creates a regenerated data frame including the same content and address data as the received data frame and controls the optical transmitter unit (21, 210) 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 (11, 9).