Automatic frequency allocation (AFA) for wireless office systems sharing the spectrum with public systems
First Claim
1. A method for automatically allocating which of available radio frequencies are to be used as a pooled resource for wireless communications in a wireless office system having a plurality of transceivers using the pooled frequencies, the method comprising the steps of:
- determining an interference level for each available radio frequency;
abandoning any radio frequency having an interference level above a select threshold;
selecting remaining usable radio frequencies having the lowest interference levels as allocated frequencies to be used in any of the plurality of transceivers in the wireless office system; and
wherein the abandoning step abandons the radio frequency for a variable period of time dependent on an amount the interference value is above the select threshold.
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Accused Products
Abstract
A frequency allocation system automatically allocates which of select radio frequencies are to be used for wireless communication systems in a wireless office system having a plurality of transceivers using a pool of select radio frequencies. The system determines an interference level for each radio frequency. Radio frequencies having an interference level above a select threshold are abandoned. Remaining usable radio frequencies having the lowest interference levels are selected as allocated frequencies to be used as a pooled resource by any of the plurality of transceivers.
89 Citations
26 Claims
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1. A method for automatically allocating which of available radio frequencies are to be used as a pooled resource for wireless communications in a wireless office system having a plurality of transceivers using the pooled frequencies, the method comprising the steps of:
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determining an interference level for each available radio frequency;
abandoning any radio frequency having an interference level above a select threshold;
selecting remaining usable radio frequencies having the lowest interference levels as allocated frequencies to be used in any of the plurality of transceivers in the wireless office system; and
wherein the abandoning step abandons the radio frequency for a variable period of time dependent on an amount the interference value is above the select threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for automatically allocating which of available radio frequencies are to be used as a pooled resource for wireless communications in a wireless office system having a plurality of transceivers using the pooled frequencies, the method comprising the steps of:
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determining an interference level for each available radio frequency;
abandoning any radio frequency having an interference level above a select threshold;
selecting remaining usable radio frequencies having the lowest interference levels as allocated frequencies to be used in any of the plurality of transceivers in the wireless office system; and
designating select ones of the allocated frequencies as candidates for use as control channel frequencies in the wireless office system and periodically rotating a serving control channel from the candidates. - View Dependent Claims (12, 13)
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14. An automatic frequency allocation system in a wireless office system, compromising:
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measurement means for determining an interference level for each of a plurality of available radio frequencies;
a plurality of transceivers for communicating with mobile stations using any allocated radio frequencies;
a frequency allocator operatively connected to the measurement means and the plurality of transceivers and including first logic means for abandoning any radio frequency having an interference level above a select threshold, and second logic means for selecting remaining usable radio frequencies having lowest interference levels as allocated radio frequencies to be used as a pooled resource by any of the plurality of transceivers; and
wherein the first logic means abandons the radio frequency for a variable period of time dependent on an amount the interference value is above the select threshold. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An automatic frequency allocation system in a wireless office system, comprising:
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measurement means for determining an interference level for each of a plurality of available radio frequencies;
a plurality of transceivers for communicating with mobile stations using any of allocated radio frequencies;
a frequency allocator operatively connected to the measurement means and the plurality of transceivers and including first logic means for abandoning any radio frequency having an interference level above a select threshold, and second logic means for selecting remaining usable radio frequencies having lowest interference levels as allocated radio frequencies to be used as a pooled resource by any of the plurality of transceivers; and
third logic means for designating select ones of the allocated frequencies as candidates for use as control channel frequencies and periodically rotating a serving control channel from the candidates. - View Dependent Claims (25, 26)
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Specification