Cable communication systems and methods employing TDMA/ATDMA QAM upstream channels below 20 MHz for increased upstream capacity to support voice and/or data services
First Claim
1. A cable communication system to provide voice and/or data services to a plurality of subscriber premises, the system comprising:
- a cable plant to convey at least upstream information from the plurality of subscriber premises over an upstream path bandwidth including a range of frequencies; and
a cable modem system coupled to the cable plant and including at least one demodulation tuner to receive and demodulate at least one upstream radio frequency (RF) signal,wherein the at least one upstream RF signal includes at least one encoded carrier wave having a carrier frequency in the upstream path bandwidth and being modulated, using quadrature amplitude modulation (QAM), with voice and/or data information constituting at least some of the upstream information from at least some of the plurality of subscriber premises,wherein;
the at least one upstream RF signal includes a first upstream RF signal having a first carrier frequency of between 5 MHz and 19.6 MHz;
a modulation order of the QAM for the first upstream RF signal is at least 32;
the first upstream RF signal is encoded with the voice and/or data information using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol; and
the at least one demodulation tuner includes a first demodulation tuner configured to receive and demodulate the first upstream RF signal using the TDMA protocol or the ATDMA protocol.
1 Assignment
0 Petitions
Accused Products
Abstract
Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth, and a cable modem system including one or more demodulation tuners to receive and demodulate one or more upstream radio frequency (RF) signals. An RF signal includes an encoded carrier wave having a carrier frequency of between 5 MHz and 19.6 MHz that is modulated using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol and quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. A modulation order of the QAM for the first upstream RF signal is at least 32, and at least one demodulation tuner of the cable modem system is configured to receive and demodulate the first upstream RF signal.
86 Citations
56 Claims
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1. A cable communication system to provide voice and/or data services to a plurality of subscriber premises, the system comprising:
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a cable plant to convey at least upstream information from the plurality of subscriber premises over an upstream path bandwidth including a range of frequencies; and a cable modem system coupled to the cable plant and including at least one demodulation tuner to receive and demodulate at least one upstream radio frequency (RF) signal, wherein the at least one upstream RF signal includes at least one encoded carrier wave having a carrier frequency in the upstream path bandwidth and being modulated, using quadrature amplitude modulation (QAM), with voice and/or data information constituting at least some of the upstream information from at least some of the plurality of subscriber premises, wherein;
the at least one upstream RF signal includes a first upstream RF signal having a first carrier frequency of between 5 MHz and 19.6 MHz;a modulation order of the QAM for the first upstream RF signal is at least 32; the first upstream RF signal is encoded with the voice and/or data information using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol; and the at least one demodulation tuner includes a first demodulation tuner configured to receive and demodulate the first upstream RF signal using the TDMA protocol or the ATDMA protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. In a cable communication system to provide voice and/or data services to a plurality of subscriber premises, the system comprising:
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a cable plant to convey at least upstream information from the plurality of subscriber premises over an upstream path bandwidth including a range of frequencies; and a cable modem system coupled to the cable plant and including at least one demodulation tuner to receive and demodulate at least one upstream radio frequency (RF) signal, wherein the at least one upstream RF signal includes at least one encoded carrier wave having a carrier frequency in the upstream path bandwidth and being modulated, using quadrature amplitude modulation (QAM), with voice and/or data information constituting at least some of the upstream information from at least some of the plurality of subscriber premises, a method of transmitting the at least some of the upstream information from the plurality of subscriber premises to the cable modem system, the method comprising; transmitting from at least one of the plurality of subscriber premises a first upstream RF signal having a first carrier frequency of between 5 MHz and 19.6 MHz, wherein;
a modulation order of the QAM for the first upstream RF signal is at least 32;the first upstream RF signal is encoded with the voice and/or data information using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol; and the at least one demodulation tuner includes a first demodulation tuner configured to receive and demodulate the first upstream RF signal using the TDMA protocol or the ATDMA protocol.
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55. A cable communication system to provide voice and/or data services to a plurality of subscriber premises, the system comprising:
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a cable plant to convey at least upstream information from the plurality of subscriber premises over an upstream path bandwidth including a range of frequencies; and a cable modem system coupled to the cable plant and including at least one demodulation tuner to receive and demodulate at least one upstream radio frequency (RF) signal, wherein the at least one upstream RF signal includes at least one encoded carrier wave having a carrier frequency in the upstream path bandwidth and being modulated, using quadrature amplitude modulation (QAM), with voice and/or data information constituting at least some of the upstream information from at least some of the plurality of subscriber premises, wherein;
the at least one upstream RF signal includes a first upstream RF signal having a first carrier frequency of between 5 MHz and 19.6 MHz;a first modulation order of the QAM for the first upstream RF signal is at least 32; the first upstream RF signal defines a first upstream physical communication channel in the upstream path bandwidth to serve a first service group including a first number of subscriber premises of the plurality of subscriber premises; the first upstream physical communication channel carries first voice and/or data information from the first service group; the first upstream RF signal is encoded with the first voice and/or data information using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol; the at least one demodulation tuner includes a first demodulation tuner configured to receive and demodulate the first upstream RF signal using the TDMA protocol or the ATDMA protocol; the at least one upstream RF signal includes a second upstream RF signal having a second carrier frequency, different than the first carrier frequency, of between 5 MHz and 19.6 MHz; a modulation order of the QAM for the second upstream RF signal is at least 32; the second upstream RF signal defines a second upstream physical communication channel in the upstream path bandwidth to serve a second service group including a second number of subscriber premises of the plurality of subscriber premises; the second upstream physical communication channel carries second voice and/or data information from the second service group; the second upstream RF signal is encoded with the second voice and/or data information using the TDMA protocol or the ATDMA protocol; and the at least one demodulation tuner includes a second demodulation tuner configured to receive and demodulate the second upstream RF signal. - View Dependent Claims (56)
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Specification