Apparatus and method for controlling transmission parameters of home network stations transmitting on a telephone line medium
First Claim
1. A network station configured for sending and receiving network signals between other network stations on a telephone line medium, the network station including a media access transceiver comprising:
- a physical layer transceiver;
a media access controller layer; and
an operating system layer connected according to Open Systems Interconnection (OSI),said physical layer transceiver being configured for receiving first data packets from the telephone line medium and transmitting second data packets onto the telephone line medium at a selected output gain and transmission speed,the media access controller layer configured for receiving digital signals transferred from the physical layer transceiver and for detecting a presence of an error in the first data packets, andthe operating system layer including a link controller configured for causing the physical layer transceiver to output onto the telephone line medium a control data packet based on the detected errors in the first data packets reaching a prescribed threshold, the control data packet causing the other network stations to adjust transmission parameters for reduction of the errors in received data packets.
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Accused Products
Abstract
A physical layer transceiver of a home network station connected to a telephone medium has an architecture enabling adaptation of detection circuitry based on received network signals to enable reliable recovery of data signals. The physical layer transceiver includes an input amplifier that amplifies network signals according to one of 128 gain settings set by a receiver gain control signal. A signal conditioning circuit includes an envelope detector configured for outputting an envelope of the amplified received signal, and an energy detector configured for outputting an energy signal of the amplified received signals. The envelope signal and the energy signal are supplied to slicer threshold circuits, configured for outputting noise, peak, data event and energy event signals based on noise threshold, peak threshold, data transition threshold, and energy threshold signals, respectively. A digital controller controls the input amplifier gain and the threshold values, and adjusts the gain and threshold values based on the noise event signal and the peak event signal within an access ID (AID) interval. A link controller monitors the number of errors in received data packets, and causes the media access controller and physical layer transceiver to output AID command packets that signal a transmitting station to reduce transmit data rate or increase transmit power to improve reception reliability on the telephone line medium.
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Citations
7 Claims
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1. A network station configured for sending and receiving network signals between other network stations on a telephone line medium, the network station including a media access transceiver comprising:
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a physical layer transceiver; a media access controller layer; and an operating system layer connected according to Open Systems Interconnection (OSI), said physical layer transceiver being configured for receiving first data packets from the telephone line medium and transmitting second data packets onto the telephone line medium at a selected output gain and transmission speed, the media access controller layer configured for receiving digital signals transferred from the physical layer transceiver and for detecting a presence of an error in the first data packets, and the operating system layer including a link controller configured for causing the physical layer transceiver to output onto the telephone line medium a control data packet based on the detected errors in the first data packets reaching a prescribed threshold, the control data packet causing the other network stations to adjust transmission parameters for reduction of the errors in received data packets. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification