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公开(公告)号：US20190089408A1
公开(公告)日：2019-03-21
申请号：US16088588
申请日：2017-03-30
Inventor： Leslie HUMPHREY , Anas AL RAWI
Abstract: A system for transmitting data between two transceivers comprises a first transceiver (100e) connected to a second transceiver (100f) by means of a connection 41b comprising a plurality of pairs of wires. Each transceiver comprises a transmitter portion and a receiver portion. The transmitter portion comprises a transmitter for transmitting a set of data signals over the pairs of wires each pair of wires having a nearside end and a distal end, the nearside ends being connected to the transmitter and at least some of the distal ends being connected to the receiver portion of the other transmitter (100e), the data signals comprising a first subset of data signals and a second subset of data signals. The transmitter comprises: an orthogonal discrete coding transformation unit and an inverse fast Fourier transformation unit, the orthogonal discrete coding transformation unit being operable to generate, in combination with the inverse fast Fourier transformation unit, a first set of transmission signals, by combining the data signals in the first subset of data signals using an orthogonal discrete coding transformation and then transforming these into corresponding time domain signals using an inverse fast Fourier transformation, the inverse fast Fourier transformation unit being additionally operable to generate a second set of transmission signals by transforming each data signal in the second subset of data signals into the time domain to form the second set of transmission signals; wherein the transmitter further comprises an analogue front end unit for generating wire driving signals derived from the transmission signals and a series of driving transformers, each of which is connected to the near ends of the wires of a respective one of the pairs of wires, and each driving transformer includes a centre tap connected to receive a driving signal derived from a respective one of the first set of transmission signals, whereby each of the transmission signals in the first set of transmission signals is transmitted in a common mode over a respective one of the plurality of pairs of wires and each of the transmission signals in the second set of transmission signals is transmitted over a respective one of the plurality of pairs of wires in a differential mode.
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公开(公告)号：US20170244446A1
公开(公告)日：2017-08-24
申请号：US15515403
申请日：2015-09-29
Inventor： Anas AL RAWI , Leslie HUMPHREY , Trevor LINNEY , Ian HORSLEY
CPC classification number: H04B3/32 , H04J2013/0081 , H04L5/0007 , H04L5/0048 , H04L27/2602 , H04M11/062
Abstract: A method of transmitting data from a transmitter device to a plurality of receiver devices each of which is connected to the transmitter device via a respective wire connection the method comprising transmitting a common signal onto all or both of the respective wire connections and using a multiple access technique to enable respective virtual data channels to be generated for transmitting data from the transmitter device to each of the receiver devices via its own respective virtual data channel.
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公开(公告)号：US20200350951A1
公开(公告)日：2020-11-05
申请号：US15733353
申请日：2019-01-02
Inventor： Liam STIGANT , Anas AL RAWI , Trevor LINNEY , Leslie HUMPHREY
Abstract: A method and apparatus for transmitting data in a communication system including a transmitter and receivers, each receiver being connected to the transmitter via a communication channel, the method including: precoding the data for transmission on the channels to provide first precoded data; using the first precoded data, for each channel, computing a number of bits to be allocated to that channel; determining that the bit allocation does not satisfy one or more criteria; ranking the channels in an order based on channel properties; discarding for use as a direct channel, one or more channels based on the ranking; precoding the data for transmission on the channels accounting for the discarded channels to provide second precoded data; and transmitting, by the transmitter, the second precoded data on the channels.
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4.发明申请公开(公告)号：US20180062700A1
公开(公告)日：2018-03-01
申请号：US15552957
申请日：2016-02-26
Inventor： Anas AL RAWI , Leslie HUMPHREY
CPC classification number: H04B3/32 , H04J1/12 , H04J3/10 , H04L25/0228 , H04L25/03006 , H04L25/03885
Abstract: A transmitter device 16 for transmitting data to a plurality of receiver devices 51, 52, 53, each of which is connected to the transmitter device via at least one respective pair of wires 21, 22, 23, each receiver device being operable to receive signals detected as a change over time in the potential difference across the local ends of each respective pair of wires extending between the receiver device and the transmitter device, the transmitter device being operable to transmit signals onto the wires extending between the transmitter device and the plurality of receiver devices in a plurality of different modes, over a plurality of different channels, the different modes including phantom and differential modes and the different channels including a first set of phantom channels, the transmitter comprising a phantom channel selector 1690 for selecting a second set of one or more phantom channels from the first set, the second set being a proper subset of the first set comprising one or more of the phantom channels of the first set, the selection being made in dependence upon the cross-talk coupling between the phantom channels of the first set and the reception of signals at each of the receivers detected as a change over time in the potential difference across the local ends of the respective pair of wires extending between the respective receiver device and the transmitter device; and a connector 1670 for connecting the selected phantom channels to the transmitter such that the transmitter is able to transmit signals from the transmitter onto the phantom channel or channels of the second set of phantom channels.
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公开(公告)号：US20190288744A1
公开(公告)日：2019-09-19
申请号：US16348043
申请日：2017-11-07
Inventor： Ian HORSLEY , Trevor LINNEY , Leslie HUMPHREY , Anas AL RAWI
Abstract: An aggregation device is arranged to receive a plurality of lines each of which is connected to a user premises and wherein one of the user premises is a multi-terminating-point enabled premises and includes a splitter device connected to the line and at least two distinct terminating points each of which is connected to the splitter device via an in-premises connection and is operable to terminate a two part connection between the respective terminating point and the aggregation device via the splitter device, and the aggregation device includes a transmitter portion, a memory, determination means, and selection means.
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Patent Agency Ranking
公开(公告)号：US20190281166A1
公开(公告)日：2019-09-12
申请号：US16348053
申请日：2017-11-07
Inventor： Ian HORSLEY , Trevor LINNEY , Leslie HUMPHREY
Abstract: A system for transmitting data to a first and a second user device within a user's premises, the system including a distribution point having an aggregation device comprising a plurality of access network modems and having a plurality of lines connected thereto, a splitter device connected to the aggregation point 10 via one of the lines connected thereto and being located within the user's premises, a first connection between the splitter device and a first customer premises equipment modem, the first customer premises equipment modem being connected to the first user device, and a second connection between the splitter device and a second customer premises equipment modem, the second customer premises equipment modem being connected to the second user device, wherein the aggregation device is operable to transmit data for the first device via a first one of the plurality of modems in the aggregation device, the splitter device and the first customer premises equipment modem using a Digital Subscriber Line protocol and is operable to transmit data for the second device via the first one of the plurality of modems in the aggregation device, the splitter device and the second customer premises equipment modem using a Digital Subscriber Line protocol.
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公开(公告)号：US20210111755A1
公开(公告)日：2021-04-15
申请号：US16497576
申请日：2018-04-03
Inventor： Anas AL RAWI , Leslie HUMPHREY , Trevor LINNEY
Abstract: A method and apparatus for transmitting data from a transmitter device to one or more receiver devices connected to the transmitter device via a respective wire connection, the transmitter device being operable to transmit signals onto the wire connections and a further wire connection at different tones, the method comprising: for each tone, measuring electromagnetic coupling between the further wire connection and each of the wire connections and using the measurements, identifying a wire connection that most strongly receives crosstalk interference from the further wire connection; based on the identifications, for each tones, allocating signals transmitted on the further wire connection as supporting signals for a particular wire connection; transmitting a first signal onto the particular wire connection that has been allocated a supporting signal; and transmitting a second signal onto the further wire connection, thereby to cause crosstalk interference in the particular wire connection transmitting the first signal.
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公开(公告)号：US20200021331A1
公开(公告)日：2020-01-16
申请号：US16497599
申请日：2018-04-03
Inventor： Anas AL RAWI , Leslie HUMPHREY , Trevor LINNEY
Abstract: A method and apparatus for transmitting data from a transmitter device to one or more receiver devices connected to the transmitter device via a respective wire connection, the transmitter device being operable to transmit signals onto the wire connections and a further wire connection at different tones, the method comprising: for each tone, allocating signals transmitted on the further wire connection as supporting signals for a particular wire connection, and measuring electromagnetic coupling between the further wire connection and that particular wire connection; using the measurements, determining a power allocation for transmitting a supporting signal on the further wire connection; for one or more of the tones: transmitting a signal onto the particular wire connection, and transmitting a supporting signal onto the further wire connection at the determined transmission power, thereby to cause crosstalk interference in the particular wire connection.
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公开(公告)号：US20180083815A1
公开(公告)日：2018-03-22
申请号：US15562165
申请日：2016-03-30
Inventor： Leslie HUMPHREY , Anas AL RAWI
CPC classification number: H04L27/265 , H04B3/32 , H04L25/0272 , H04L27/01 , H04L27/2647 , H04L27/34
Abstract: A system (100), (200), (310), (320) for transmitting data between an upstream transceiver (100) and a downstream transceiver (200) via two pairs of wires (310), (320) extending between the transceivers. The system comprises: the upstream transceiver (100) which includes first (110) and second (120) transmitter portions; the downstream transceiver (200) which includes first (210) and second (220) receiver portions for receiving signals transmitted by the upstream transceiver in a differential mode; and the two pairs of wires (310), (320) extending between the transceivers, the wires forming a composite channel through which signals transmitted by the upstream transceiver travel before being received by the downstream transceiver, the composite channel including direct differential mode channels h11 and h22 between the first and second transmitter portions on the one hand and the first and second receiver portions respectively on the other hand, and indirect channels h21 and h12 between the first and second transmitter portions on the one hand and the second and first receiver portions respectively on the other hand. The upstream transceiver is operable to transmit, to the downstream transceiver, using a discrete multi-tone protocol capable of using up to a number of different tones, a data signal in which related signals are transmitted onto both pairs of wires in a differential mode, such that, in use, each of the first and second receiver portions receives a respective one of the transmitted signals after modification by the composite channel together with some portion of the other related signal. Each receiver portion includes a fast Fourier Transform module for converting the received signal into the frequency domain and a related-signals processing frequency domain equaliser for further processing the resulting signal using frequency domain equalisation coefficients calculated in dependence upon estimated channel transfer functions associated with the direct differential mode channel terminating at the respective receiver portion and additionally in dependence upon estimated channel transfer functions associated with the indirect channel terminating at the respective receiver portion.
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10.发明申请公开(公告)号：US20200028972A1
公开(公告)日：2020-01-23
申请号：US16338106
申请日：2017-09-27
Inventor： Anas AL RAWI , Leslie HUMPHREY
Abstract: A transmitter for transmitting data, using a discrete multi-tone modulation technique, to one or more receiver devices, each of which is connected to the transmitter device via at least one respective pair of wires, each receiver device being operable to receive signals detected as a change over time in the potential difference across the local ends of each respective pair of wires extending between the receiver and the transmitter device, is operable to transmit signals onto the wires extending between the transmitter device and the one or more receiver devices in a plurality of different modes, over a plurality of different channels, the different modes including phantom and differential modes and the different channels including a first set of phantom channels. The transmitter is further operable to select a second set of phantom channels from the first set, the second set being a subset of the first set comprising some or all of the phantom channels of the first set such that at least some of the phantom channels
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