Call admission control method and apparatus for cellular systems
First Claim
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1. A method of performing call admission control upon receipt of a request for a new session comprising:
- making an estimate of a new system FER which will result should the new session be admitted; and
deciding to admit or to deny the new session on the basis of the new system FER estimate;
wherein making the estimate of the new system FER comprises;
making an estimate of a previous system FER at the time of the request;
determining an estimate of a degradation in the system FER should the new session be admitted; and
combining the estimate of the degradation to the estimate of the previous system FER to obtain said estimate of the total system FER.
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Abstract
An improved call admission control method and apparatus is provided in which a MAC (or equivalent) layer parameter such as the FER (frame error rate) is used as a basis for call admission control. An estimate of a FER which would result should a requested session be admitted is made, and on the basis of this estimate, the session is either admitted or denied access. The estimate is made by combining a previous FER with a degradation which is expected should the session be admitted. The degradation is either determined experimentally, or can be updated in real time to reflect actual traffic patterns.
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Citations
13 Claims
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1. A method of performing call admission control upon receipt of a request for a new session comprising:
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making an estimate of a new system FER which will result should the new session be admitted; and deciding to admit or to deny the new session on the basis of the new system FER estimate; wherein making the estimate of the new system FER comprises; making an estimate of a previous system FER at the time of the request; determining an estimate of a degradation in the system FER should the new session be admitted; and combining the estimate of the degradation to the estimate of the previous system FER to obtain said estimate of the total system FER. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An article of manufacture comprising:
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a computer usable medium having computer readable code means embodied therein for performing call admission control, the computer readable code means in said article of manufacture comprising; computer readable code means for making an estimate of a new system FER which will result should a new session be admitted; and computer readable code means for deciding to admit or to deny the new session on the basis of the new system FER estimate; computer readable code means for making an estimate of a previous system FER at a time of the request; computer readable code means for determining an estimate of a degradation in the system FER should the new session be admitted; and computer readable code means for combining the estimate of the degradation to the estimate of the previous system FER to obtain said estimate of the total system FER.
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Specification