CELL SELECTION TECHNIQUES FOR FREQUENCY DIVISION MULTIPLE ACCESS SYSTEMS
First Claim
1. A method comprising:
- receiving a signal associated with a cell of a frequency division multiple access (FDMA) system, the cell spanning a first frequency range;
filtering the signal to a second frequency range, wherein the second frequency range is smaller than the first frequency range; and
measuring power of the filtered signal to identify an estimate of power associated with the cell.
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Abstract
This disclosure is directed to power estimation techniques for use by a subscriber unit of a frequency division multiple access (FDMA) system during the cell selection process. The power estimation techniques recognize that adjacent cells, i.e., adjacent in terms of frequency, often have slight overlap. Thus, the power from a signal associated with one cell can cause power to be detected in an adjacent cell, even if no signal is actually present in the adjacent cell. In accordance with this disclosure, techniques are described for identifying, reducing or eliminating the detection of false positives in such adjacent cells. By identifying, reducing or eliminating the detection of false positives, the cell selection process can be accelerated and additional processing of false positive signals in such adjacent cells can be avoided.
24 Citations
13 Claims
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1. A method comprising:
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receiving a signal associated with a cell of a frequency division multiple access (FDMA) system, the cell spanning a first frequency range;
filtering the signal to a second frequency range, wherein the second frequency range is smaller than the first frequency range; and
measuring power of the filtered signal to identify an estimate of power associated with the cell. - View Dependent Claims (2, 3, 4)
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5. A subscriber unit of a frequency division multiple access (FDMA) system comprising:
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a receiver to receive a signal associated with a cell of a frequency division multiple access (FDMA) system, the cell spanning a first frequency range; and
a control unit to filter the signal to a second frequency range, wherein the second frequency range is smaller than the first frequency range, and measure power of the filtered signal to identify an estimate of power associated with the cell. - View Dependent Claims (6, 7, 8)
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9. A computer-readable medium comprising instructions to cause subscriber unit of a frequency division multiple access (FDMA) system to:
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receive a signal associated with a cell of the FDMA system, the cell spanning a first frequency range;
filter the signal to a second frequency range, wherein the second frequency range is smaller than the first frequency range; and
measure power of the filtered signal to identify an estimate of power associated with the cell. - View Dependent Claims (10, 11)
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12. A subscriber unit of a frequency division multiple access (FDMA) system comprising:
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means for receiving a signal associated with a cell of the FDMA system, the cell spanning a first frequency range;
means for filtering the signal to a second frequency range, wherein the second frequency range is smaller than the first frequency range; and
means for measuring power of the filtered signal to identify an estimate of power associated with the cell. - View Dependent Claims (13)
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Specification