Method and apparatus for allocating tones to a plurality of users in a multi-tone modem communications system
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United States of America Patent
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Dec 31, 2002
Issued Date -
N/A
app pub date -
Jul 21, 1999
filing date -
Jul 21, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A communications system includes a first and second modem coupled together via a communications link. The first modem has at least two user devices coupled thereto, and modulates data generated by the user devices on a plurality of tone carriers for transmission to the second modem. The first modem determines the number of user devices coupled to it. Based upon the number of user devices determined, the first modem divides the plurality of tone carriers into a number of subsets corresponding to the number of user devices based upon a predetermined criterion. The first modem then allocates a subset of tone carriers to a respective user device. In one embodiment, the usage rate of each user device is determined, and the tone carriers are reallocated to different subsets as a function of the usage rate of each respective user device.
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