METHODS FOR CONTENTION-BASED BANDWIDTH REQUESTS IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEMS
First Claim
1. A method for an orthogonal frequency division multiplexing multipoint-to-point communications system, the method comprising:
- 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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Accused Products
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.
138 Citations
14 Claims
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1. A method for an orthogonal frequency division multiplexing multipoint-to-point communications system, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for an orthogonal frequency division multiplexing multipoint-to-point communications system, the method comprising:
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receiving an orthogonal frequency division multiplexing waveform at a multipoint-to-point host unit, the orthogonal frequency division multiplexing waveform comprising a plurality of tones transmitted by a plurality of remote units;
communicating between a first remote unit of the plurality of remote units and the multipoint-to-point host unit, the plurality of remote units communicatively coupled to the multipoint-to-point host unit in a multipoint-to-point configuration; and
determining when a request for bandwidth is successfully received from a first remote unit of the plurality of remote units;
wherein when a request for bandwidth is successfully received, transmitting information on at least one tone of the orthogonal frequency division multiplexing waveform to the first remote unit, the information indicative of whether the request for bandwidth is successfully received.
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8. A method for an orthogonal frequency division multiplexing multipoint-to-point communications system, the method comprising:
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receiving an orthogonal frequency division multiplexing waveform at a multipoint-to-point host unit, the orthogonal frequency division multiplexing waveform comprising a plurality of tones transmitted by a plurality of remote units;
transmitting at least one request for bandwidth to the host unit on a first tone of the plurality of tones from the plurality of remote units, wherein access to the first tone is contention-based. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification