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EP0812087A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method for allocating data in a data communication system

Assignee: Apple Inc
•
Filing: 1997-05-28
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Granted: —
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Expires: 2017-05-28
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Abstract

Abstract A communications system (30) includes a transceiver (42) for transmitting data from a plurality of bins. Specifically, the BER of the bins is substantially equalized by allocating data by determining a projected margin. The projected margin is calculated for each bin by subtracting a reference signal-to-noise value from an estimated bin signal-to-noise value. The reference signal-to-noise value is predetermined by theoretical calculation or empirical data and stored in a look-up table. Bits are allocated to the bin having the maximum projected margin. This provides the best BER without changing the transmit power.

Inventors

  • 👤 Howard E. Levin
  • 👤 Jeffrey P. Gleason

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 18:36
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/0001; H04L5/0003; H04L5/0005; H04L5/0007; H04L5/003; H04L5/0044; H04L5/0046; H04L5/0058; H04L5/006

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 95 words
A method of allocating data in a data communication system (30) having a plurality of bins for sending data, the data communication system comprising: defining an initial signal-to-noise value for each of the plurality of bins (326); defining a reference signal-to-noise value(327); calculating a projected signal-to-noise margin for each of the plurality of bins based on the initial signal-to-noise value and the reference signal-to-noise value (312); selecting a best bin from the plurality of bins based on the projected signal-to-noise margin (314); and allocating a portion of the data to the best bin (315, 319).
Claim 2
Dependent Claim 28 words
The method of claim 1, wherein the step of calculating a projected signal-to-noise margin is determined by subtracting the reference signal-to-noise value from the initial signal-to-noise value (312).
Claim 3
Dependent Claim 28 words
The method of claim 2, wherein the reference signal-to-noise value is an amount of signal-to-noise needed for an allocated amount of data at a given bit error rate.
Claim 4
Dependent Claim 33 words
The method of claim 1 further comprising the steps of: recalculating the projected signal-to-noise margin for the best bin (320); and repeating the steps of, selecting (314), allocating (315, 319), and recalculating (320).
Claim 5
Dependent Claim 42 words
The method of claim 4, wherein: the data comprises a bit pool having at least one bit of data (310); and the step of allocating bits includes allocating at least one bit of the bit pool to the best bin (315, 319).
Claim 6
Dependent Claim 21 words
The method of claim 5, further comprising the step of: removing at least one bit from the bit pool (316, 317).
Claim 7
Dependent Claim 22 words
The method of claim 6, further comprising the step of: removing at least one bit from the bit pool during a transmission.
Claim 8
Dependent Claim 19 words
The method of claim 5, further comprising the step of: adding at least one bit to the bit pool.
Claim 9
Dependent Claim 23 words
The method of claim 8, further comprising the step of: adding the at least one bit to the bit pool during a transmission.
Claim 10
Dependent Claim 15 words
The method of claim 1, further comprising the step of: calculating new reference signal-to-noise values.

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