Method and apparatus for dynamic distribution of a communication channel load in a cellular radio communication system
First Claim
1. A method of dynamic distribution of communication channel load in a sectorized cellular radio communication system having sector antennae, each sector antenna having a beamwidth and a beamlength, comprising:
- (a) narrowing a first sector antenna beamwidth of an overloaded sector of a cell of the radio communication system;
(b) widening a second sector antenna beamwidth of an adjacent sector of the cell of the radio communication system; and
(c) automatically handing off subscriber units which were previously in the first sector antenna beamwidth.
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Abstract
A method and apparatus is provided for dynamic distribution of a communication channel load in a sectorized cellular radio communication system. The channel load is distributed by narrowing a first sector antenna beamwidth of an overloaded sector of a cell site and widening a second sector antenna beamwidth of an adjacent sector of the cell site and subsequently handing off subscriber units previously in the first sector antenna beamwidth. Alternatively, channel load is distributed by reducing power of a sector or omni-directional antenna which is adjacent to an overloaded antenna, if the channel from an overloaded antenna to an antenna of a subscriber unit is overloaded due to interference. Subsequent to the occurrence of the channel interference condition, subscriber units are handed off to the particular antenna which is best able to service the subscriber units.
239 Citations
12 Claims
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1. A method of dynamic distribution of communication channel load in a sectorized cellular radio communication system having sector antennae, each sector antenna having a beamwidth and a beamlength, comprising:
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(a) narrowing a first sector antenna beamwidth of an overloaded sector of a cell of the radio communication system; (b) widening a second sector antenna beamwidth of an adjacent sector of the cell of the radio communication system; and (c) automatically handing off subscriber units which were previously in the first sector antenna beamwidth. - View Dependent Claims (2)
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3. A method of dynamic distribution of communication channel load in a radio communication system, comprising:
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(a) reducing power of an antenna of the radio communication system which is adjacent to an overloaded antenna of the radio communication system, if the overloaded antenna is overloaded due to interference in a communication channel of the radio communication system from the overloaded antenna to an antenna of a subscriber unit; and (b) automatically handling off subscriber units between the overloaded and adjacent antennae. - View Dependent Claims (4, 5, 6)
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7. A sectorized cellular radio communication system having dynamic distribution of communication channel load, the radio communication system having sector antennae, each sector antenna having a beamwidth and a beamlength, comprising:
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(a) beamwidth control means for; (i) narrowing a first sector antenna beamwidth of an overloaded sector of a cell of the radio communication system; and (ii) widening a second sector antenna beamwidth of an adjacent sector of the cell of the radio communication system; and (b) handoff means for automatically handing off subscriber units which were previously in the first sector antenna beamwidth. - View Dependent Claims (8)
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9. A radio communication system having dynamic distribution of communication channel load, comprising:
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(a) power control means for reducing power of an antenna of the radio communication system which is adjacent to an overloaded antenna of the radio communication system when the overloaded antenna is overloaded due to interference in a communication channel of the radio communication system from the overloaded antenna to an antenna of a subscriber unit; and (b) handoff means for automatically handing off subscriber units between the overloaded and adjacent antennae. - View Dependent Claims (10, 11, 12)
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Specification