Side-channel communications in simultaneous voice and data transmission
DCFirst Claim
1. A method for transmitting a side-channel in a simultaneous analog and digital communications system, the method comprising the steps of:
- multiplexing a plurality of symbol streams to provide a sequence of symbol blocks, where each symbol block includes a predefined number of symbols from each symbol stream; and
transmitting each symbol block;
wherein the step of transmitting further includes the step of adding to each symbol of each symbol block a signal point before transmission.
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Accused Products
Abstract
In a simultaneous voice and data communication system, a stream of signal points is partitioned into a plurality of symbol blocks, each symbol block including a data segment and a control segment. The data segment carries information from a user, i.e., user data, while the control segment provides control information. A voice signal is then added to at least a portion, or all, of the signal points of each symbol block to provide for simultaneous voice and data transmission to an opposite endpoint. The control information may represent information from a secondary data source, and/or may include information about the characteristics of the succeeding block, e.g., the user data rate, and information pertaining to characteristics of the communications channel.
55 Citations
50 Claims
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1. A method for transmitting a side-channel in a simultaneous analog and digital communications system, the method comprising the steps of:
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multiplexing a plurality of symbol streams to provide a sequence of symbol blocks, where each symbol block includes a predefined number of symbols from each symbol stream; and transmitting each symbol block; wherein the step of transmitting further includes the step of adding to each symbol of each symbol block a signal point before transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for transmitting side information in a simultaneous analog and data communications system, the method comprising the steps of:
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encoding a data signal to provide a number of data symbols, J, over a period of time equal to T1 ; encoding at least one control signal to provide a number of control symbols, K, over a period of time equal to T2, where the control signal represents control information; multiplexing the number of data symbols and the number of control symbols to provide a symbol block comprising the J+K symbols; encoding an analog signal to provide a number of signal points over the time period T1 +T2 ; adding each one of the signal points to a respective symbol of the symbol block to provide a number of resultant signal points; and transmitting the number of resultant signal points. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for use in a modem comprising the steps of:
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demultiplexing a stream of received signal points from a far-end modem to provide a plurality of signal point streams; decoding each one of the plurality of signal points streams to provide a respective plurality of symbol streams; and decoding each one of the received signal points as a function of the plurality of symbol streams to provide an analog signal. - View Dependent Claims (24, 25, 26)
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27. Apparatus for transmitting a side-channel in a simultaneous analog and digital communications system, the apparatus comprising:
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means for multiplexing a plurality of symbol streams to provide a sequence of symbol blocks, where each symbol block includes a predefined number of symbols from each symbol stream; and means for transmitting each symbol block; wherein the means for transmitting further includes a means for adding to each symbol of each symbol block a signal point before transmission. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. Modem apparatus comprising:
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means responsive to a data signal for providing a stream of data symbols, each data symbol selected from a first signal space; means responsive to at least one control signal for providing a stream of control symbols, each control symbol selected from a second signal space; means for developing a number of symbol blocks, each symbol block comprising a number of the data symbols and a number of the control symbols; means responsive to an analog signal for providing a stream of signal points; means for adding each one of the signal points to at least some of the symbols of each symbol block to provide an stream of resultant signal points; and means for transmitting the resultant signal point stream. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44)
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45. A modem apparatus comprising:
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means for demultiplexing a stream of received signal points from a far-end modem to provide a plurality of signal point streams; means for decoding each one of the plurality of signal points streams to provide a respective plurality of symbol streams; and means for decoding each one of the received signal points as a function of the plurality of symbol streams to provide an analog signal. - View Dependent Claims (46, 47, 48, 49, 50)
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Specification