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    COMMUNICATIONS NETWORK
    1.
    发明申请
    COMMUNICATIONS NETWORK 审中-公开

    公开(公告)号：US20170324503A1

    公开(公告)日：2017-11-09

    申请号：US15525864

    申请日：2015-11-10

    Applicant: British Telecommunications Public Limited Company

    Inventor： Mohammad ZOUALFAGHARI

    IPC: H04J14/00 ,  H04J13/16 ,  H04B7/26

    CPC classification number: H04J14/005 ,  H04B7/2628 ,  H04J13/16

    Abstract: A fixed communication network is disclosed in which a plurality of transmitters feed signals via tributary transmission lines of different lengths onto a shared network component. A timing reference signal is distributed to the transmitters. The shared network component in some embodiments takes the form of a transmission line. In order to enable the sharing of the capacity of the shared network component, each of the plurality of transmitters codes data for transmission in accordance with a code division multiple access scheme. The efficiency of usage of the shared network component is improved by synchronizing the arrival of the encoded bits at the shared network component. This is achieved by populating a store within each transmitter with a pre-set timing offset, and timing the transmission of data in accordance with the timing reference signal received by the transmitters and the pre-set timing offset.

    COMMUNICATIONS NETWORK
    2.
    发明申请
    COMMUNICATIONS NETWORK 审中-公开

    公开(公告)号：US20170324444A1

    公开(公告)日：2017-11-09

    申请号：US15525825

    申请日：2015-11-10

    Applicant: British Telecommunications Public Limited Company

    Inventor： Mohammad ZOUALFAGHARI

    IPC: H04B3/04 ,  H04L7/00 ,  H04J13/16 ,  H04B10/2507 ,  H04B3/52 ,  H04B3/50

    CPC classification number: H04B3/04 ,  H04B3/50 ,  H04B3/52 ,  H04B10/2507 ,  H04J13/16 ,  H04J14/005 ,  H04L7/0008 ,  H04L7/0075

    Abstract: An optical network is disclosed which includes an optical fiber shared by a plurality of transmitters using code division multiple access techniques. The transmitters are connected by tributary optical fibers to the shared optical fiber. In code division multiple access techniques, each communication is encoded with a distinctive code which enables a receiver to extract the communication intended for it from amongst communications intended for other receivers. It is found that synchronizing the communications on the optical fiber improves the ability of a receiver to extract the communication intended for it. Injecting an optical pulse signal into the optical network, and using the tributary optical fibers to carry the clock signal to the transmitters provides an inexpensive method of synchronizing the transmitters which feed signals onto the optical fiber. The technology is of use in optical networks, and other transmission line networks, and is well-suited to use in local area networks.

    NETWORK DEVICE MANAGEMENT
    6.
    发明申请
    NETWORK DEVICE MANAGEMENT 有权

    公开(公告)号：US20220141767A1

    公开(公告)日：2022-05-05

    申请号：US17428766

    申请日：2020-01-28

    Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

    Inventor： Mohammad ZOUALFAGHARI ,  Paul PUTLAND ,  Ruth BROWN

    IPC: H04W52/02

    Abstract: A method of retrieving status information from a telecommunications device (110) via a wireless telecommunications network (100), comprising the steps of: detecting, at the telecommunications device, a change in discontinuous reception of the telecommunications device (210); the telecommunications device retrieving status information relating to said telecommunications device (220); and in response to detecting the change in discontinuous reception, communicating the retrieved status information to the wireless telecommunications network (230).

    PASSIVE OPTICAL SENSORS
    7.
    发明申请
    PASSIVE OPTICAL SENSORS 有权

    公开(公告)号：US20210005078A1

    公开(公告)日：2021-01-07

    申请号：US15733642

    申请日：2019-03-18

    Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

    Inventor： Mohammad ZOUALFAGHARI ,  Michael FISHER ,  Ian NEILD ,  Michael WILLIAMSON

    IPC: G08B29/10 ,  G08B5/36 ,  H03K17/687

    Abstract: A passive sensor for detecting the operation of a light source includes a photosensor which, when illuminated by the light source, delivers a voltage to a field effect transistor (FET) which can switch a circuit to control a device at a remote location. The FET transitions rapidly between very low resistance (short circuit) and very high resistance (open circuit), allowing a binary indication to be given in the circuit. The circuit can be used to charge an electrical storage device to allow later download of recent status of the lamp by detecting the charge stored in the device.

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