Modular home-networking communication system and method using disparate communication channels
First Claim
1. A network communications system, comprising:
- a network device;
a plurality of channel interface units for operatively interfacing said network device to one of a plurality of disparate communication channels, each of said plurality of channel interface units being operatively compatible with a corresponding one of said plurality of disparate communication channels;
a baseband modem, interchangeably connectable to any one of said plurality of channel interface units, for encoding and decoding data transmitted between said network device and one of said plurality of disparate communication channels, wherein said baseband modem is operatively compatible with each of said plurality of disparate communication channels; and
a MAC (media access control) processor, operatively connected between said network device and said baseband modem, for controlling the transfer of data between said network device and said baseband modem, wherein said MAC processor is operatively compatible with each of said plurality of disparate communication channels.
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Abstract
A modular home-networking communications system which uses a physical layer modulation scheme suitable for transmission in both RF and powerline communication channels. The modulation system is based on direct-sequence spread-spectrum (DS-SS) using Barker codes to spread the information symbols, which provides both operation at low signal to noise ratio and very good resistance to time dispersion distortion due to the excellent autocorrelation properties of the Barker codes. This type of modulation system is ideal for the powerline communications channel since it spreads the transmission power over a wide range of frequency, lowering the power spectral density enough that it will provide long distance coverage without violating FCC radiated emission and conducted power regulations.
325 Citations
17 Claims
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1. A network communications system, comprising:
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a network device;
a plurality of channel interface units for operatively interfacing said network device to one of a plurality of disparate communication channels, each of said plurality of channel interface units being operatively compatible with a corresponding one of said plurality of disparate communication channels;
a baseband modem, interchangeably connectable to any one of said plurality of channel interface units, for encoding and decoding data transmitted between said network device and one of said plurality of disparate communication channels, wherein said baseband modem is operatively compatible with each of said plurality of disparate communication channels; and
a MAC (media access control) processor, operatively connected between said network device and said baseband modem, for controlling the transfer of data between said network device and said baseband modem, wherein said MAC processor is operatively compatible with each of said plurality of disparate communication channels. - View Dependent Claims (2, 3, 4, 5, 6, 10, 11)
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7. A modular home-network communications system, comprising:
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a plurality of network devices, said network devices being operatively connected to each other through a plurality of disparate communication channels, each of said plurality of disparate communication channels being associated with one of said plurality of network devices;
a plurality of channel interface units, for operatively interfacing one of said plurality of network devices associated therewith to a corresponding one of said plurality of disparate communication channels, each of said plurality of channel interface units being functionally compatible with a corresponding one of said plurality of disparate communication channels;
a plurality of media access control (MAC)/baseband processor units, at least one of said plurality of MAC/baseband processor units being operatively coupled between each one of said plurality of network devices and said associated interface unit, each one of said plurality of MAC/baseband processor units comprising modulation/demodulation means for encoding and decoding signals transmitted between said corresponding network device and said corresponding communication channel, said modulation/demodulation means being operatively compatible with each of said plurality of disparate communication channels; and
media access protocol means for controlling the transfer of data between said corresponding network device and said corresponding interface unit, said media access protocol means being operatively compatible with each of said plurality of disparate communication channels;
said modulation/demodulation means and said media access protocol means being identical in each of said plurality of MAC/baseband processor units; and
inter-channel interface means, operatively connected between each of said plurality of disparate communication channels, for routing messages between each of said plurality of disparate communication channel to establish a communication link between said network devices operating in a different one of said plurality of disparate communication channels. - View Dependent Claims (8, 9)
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12. An access device for providing access to a communications system, comprising;
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a plurality of channel interface devices, wherein each channel interface device is operatively coupled to a corresponding one of a plurality of disparate communication channels;
a plurality of MAC/baseband processors, wherein each MAC/baseband processor is operatively coupled to at least one of the channel interface devices, and wherein each of the MAC/baseband processors employs a similar modulation/demodulation process; and
a router, operatively connected to each of the MAC/baseband processors, for routing data between the disparate communication channels. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification