METHODS FOR CONTENTION-BASED BANDWIDTH REQUESTS IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEMS
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United States of America Patent
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app pub date -
Jun 26, 2007
filing date -
Feb 6, 1995
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Abandoned
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Abstract
Methods for contention-based bandwidth requests in orthogonal frequency division multiplexing systems are provided. In one embodiment, a method for an orthogonal frequency division multiplexing multipoint-to-point communications system comprises: establishing communication between a first remote unit of a plurality of remote units and a host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; transmitting up to a plurality of tones from the first remote unit, the up to a plurality of tones modulated with upstream information using orthogonal frequency division multiplexing; determining when bandwidth is needed for an upstream transmission to the host unit; and transmitting a request for bandwidth to the host unit on a first tone of the plurality of tones, wherein access to the first tone is contention-based.
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