SYSTEM AND METHOD FOR CONTENTION BASED TONES IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM
First Claim
1. A multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system comprising:
- a host unit;
a plurality of remote units that access the host unit using an orthogonal frequency division multiple access scheme;
wherein each of the remote units modulates upstream information into an OFDM signal modulated using a Fourier transform;
wherein the host unit receives upstream OFDM signals from a plurality of the remote units, wherein portions of the upstream OFDM signals arrive at the host unit at the same time;
wherein a first remote unit transmits a first upstream signal to the host unit on a first orthogonal tone; and
wherein the first remote unit retransmits the first upstream signal to the host unit in the event a collision occurs on the first orthogonal tone.
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Accused Products
Abstract
Systems and methods for contention based tones in a multipoint-to-point orthogonal frequency division multiplexing system are provided. In one embodiment, a multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system comprises: a host unit; a plurality of remote units that access the host unit using an orthogonal frequency division multiple access scheme; wherein each of the remote units modulates upstream information into an OFDM signal modulated using a Fourier transform; wherein the host unit receives upstream OFDM signals from a plurality of the remote units, wherein portions of the upstream OFDM signals arrive at the host unit at the same time; wherein a first remote unit transmits a first upstream signal to the host unit on a first orthogonal tone; and wherein the first remote unit retransmits the first upstream signal to the host unit in the event a collision occurs on the first orthogonal tone.
102 Citations
9 Claims
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1. A multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system comprising:
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a host unit;
a plurality of remote units that access the host unit using an orthogonal frequency division multiple access scheme;
wherein each of the remote units modulates upstream information into an OFDM signal modulated using a Fourier transform;
wherein the host unit receives upstream OFDM signals from a plurality of the remote units, wherein portions of the upstream OFDM signals arrive at the host unit at the same time;
wherein a first remote unit transmits a first upstream signal to the host unit on a first orthogonal tone; and
wherein the first remote unit retransmits the first upstream signal to the host unit in the event a collision occurs on the first orthogonal tone. - View Dependent Claims (2, 3, 4)
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5. A system comprising:
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a host unit;
a plurality of remote units using an orthogonal frequency division multiple access scheme to communicate at the same time with the host unit;
wherein a first remote unit transmits a first upstream signal to the host unit on a first orthogonal tone; and
wherein the first remote unit retransmits the first upstream signal to the host unit in the event a collision occurs on the first orthogonal tone. - View Dependent Claims (6, 7, 8, 9)
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Specification