Methods and Arrangements for Cell Stability in a Cellular Communication System
First Claim
1. A method for assisting load scheduling in a wireless communication system, said method comprising:
- computing an estimate of a noise floor measure for received uplink radio signals;
estimating a neighbor cell interference power;
performing an interference whitening of said received uplink radio signals based on one of frequency domain equalizing and frequency domain pre-equalizing;
determining a useful signal power after interference whitening;
deriving a first user noise floor compensation factor; and
calculating a noise rise measure based at least on said useful signal power after interference whitening, said noise floor compensation factor, said noise floor measure and said estimated neighbor cell interference power.
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Abstract
A method for assisting load scheduling in a wireless communication system comprises computing of an estimate of a noise floor measure for received uplink radio signals and a neighbor cell interference power is estimated. An interference whitening of the received uplink radio signals is performed based on frequency domain equalizing or frequency domain pre-equalizing. A useful signal power after interference whitening is determined and a first user noise floor compensation factor is derived. A noise rise measure is calculated based at least on the useful signal power after interference whitening, the noise floor compensation factor, the noise floor measure and the estimated neighbor cell interference power.
14 Citations
21 Claims
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1. A method for assisting load scheduling in a wireless communication system, said method comprising:
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computing an estimate of a noise floor measure for received uplink radio signals; estimating a neighbor cell interference power; performing an interference whitening of said received uplink radio signals based on one of frequency domain equalizing and frequency domain pre-equalizing; determining a useful signal power after interference whitening; deriving a first user noise floor compensation factor; and calculating a noise rise measure based at least on said useful signal power after interference whitening, said noise floor compensation factor, said noise floor measure and said estimated neighbor cell interference power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An arrangement for assisting load scheduling in a wireless communication system, the arrangement comprising:
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a digital receiver; an interference whitener connected to said digital receiver; said interference whitener being based on one of frequency domain equalizing and frequency domain pre-equalizing; and a processor connected to said digital receiver and to an output from said interference whitener; said processor being configured to; compute an estimate of a noise floor measure; estimate a neighbor cell interference power; determine a useful signal power after interference whitening; derive a first user noise floor compensation factor; and calculate a noise rise measure based at least on said useful signal power after interference whitening, said noise floor compensation factor, said noise floor measure and said estimated neighbor cell interference power. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A base station of a wireless communication system comprising an arrangement for assisting load scheduling, said arrangement for assisting load scheduling in turn comprising:
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a digital receiver; an interference whitener connected to said digital receiver; said interference whitener being based on one of frequency domain equalizing and frequency domain pre-equalizing; and a processor connected to said digital receiver and to an output from said interference whitener, said processor being configured to; compute an estimate of a noise floor measure; estimate a neighbor cell interference power; determine a useful signal power after interference whitening; derive a first user noise floor compensation factor; and calculate a noise rise measure based at least on said useful signal power after interference whitening, said noise floor compensation factor, said noise floor measure and said estimated neighbor cell interference power.
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Specification