US5276907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for dynamic distribution of a communication channel load in a cellular radio communication system
Assignee: Motorola Solutions Inc
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Filing: 1991-01-07
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Granted: 1994-01-04
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Expires: 2011-01-07
Abstract
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.
Inventors
- 👤 Reuven Meidan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:20
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/02; H04W16/04; H04W16/06; H04W16/24; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
83 words
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.
Claim 2
Independent Claim
83 words
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.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the radio communication system comprises a spread-spectrum radio communication system.
Claim 4
Independent Claim
80 words
A method of dynamic distribution of communication channel load in a radio communication system, comprising: (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.
Claim 5
Independent Claim
80 words
A method of dynamic distribution of communication channel load in a radio communication system, comprising: (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.
Claim 6
Dependent Claim
60 words
The method of claim 3 wherein: (a) the radio communication system comprises a sectorized cell; (b) the overloaded antenna comprises a sector antenna of the sectorized cell; and (c) the step of reducing the antenna power of the adjacent antenna comprises reducing the power of a sector antenna of the sectorized cell which is adjacent to the overloaded sector antenna.
Claim 7
Dependent Claim
60 words
The method of claim 3 wherein: (a) the radio communication system comprises a first and a second cell; (b) the overloaded antenna comprises an antenna in the first cell; and (c) the step of reducing the antenna power of the adjacent antenna comprises reducing the power of an antenna of the second cell which is adjacent to the overloaded antenna.
Claim 8
Dependent Claim
16 words
The method of claim 3 wherein the radio communication system comprises a spread-spectrum radio communication system.
Claim 9
Dependent Claim
93 words
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: (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.
Claim 10
Dependent Claim
93 words
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: (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.
Claim 11
Dependent Claim
18 words
The radio communication system of claim 7 wherein the radio communication system comprises a spread-spectrum radio communication system.
Claim 12
Dependent Claim
84 words
A radio communication system having dynamic distribution of communication channel load, comprising: (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.
Claim 13
Dependent Claim
84 words
A radio communication system having dynamic distribution of communication channel load, comprising: (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.
Claim 14
Dependent Claim
57 words
The radio communication system of claim 9 wherein: (a) the radio communication system comprises a sectorized cell: (b) the overloaded antenna comprises a sector antenna of the sectorized cell: and (c) the power control means comprises means for reducing the power of a sector antenna of the sectorized cell which is adjacent to the overloaded sector antenna.
Claim 15
Dependent Claim
57 words
The radio communication system of claim 9 wherein: (a) the radio communication system comprises a first and a second cell: (b) the overloaded antenna comprises an antenna in the first cell: and (c) the power control means comprises means for reducing the power of an antenna of the second cell which is adjacent to the overloaded antenna.
Claim 16
Dependent Claim
18 words
The radio communication system of claim 9 wherein the radio communication system comprises a spread-spectrum radio communication system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-03 | 1997-07-05 | 1998-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-03 | 2001-07-05 | 2002-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-03 | 2005-07-05 | 2006-01-04 | $7700.00 | Window Closed / Lapsed |