US5623484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling signal quality in a CDMA cellular telecommunications
Assignee: TE Connectivity Solutions GmbH
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Filing: 1993-09-24
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Granted: 1997-04-22
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Expires: 2013-09-24
Abstract
Abstract A system and a method for controlling the radio signal quality between a plurality of mobile stations and a plurality of base stations connected to a mobile switching center of a code division multiple access (CDMA) cellular telecommunication system. Each base station is adapted to measure the quality of each active CDMA communication link and to report for each active CDMA radio communication to the mobile switching center the corresponding measured communication signal quality. The mobile switching center is adapted to perform an averaging process on the reported quality measure values, in order to calculate a recommended quality measure threshold value. The base stations are adapted to receive the recommended threshold value for use in an uplink closed-loop power control algorithm for the mobile stations.
Inventors
- 👤 Peter Muszynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/06; H04W52/12; H04W52/08; H04W52/18; H04W52/38; H04W52/386; H04W36/00; H04W36/16; H04W36/18
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
176 words
A system for controlling the quality of radio signals on active code division multiple access (CDMA) communication links between a plurality of mobile stations and a plurality of base stations connected to a mobile switching center of a CDMA cellular telecommunications system, wherein: each of said base stations is adapted to measure the quality of each said active CDMA communication link and to report, for each active CDMA radio communication over each said link, to said mobile switching center, each corresponding measured value of communication signal quality; said mobile switching center is adapted to perform an averaging of said measured values of communication signal quality, for calculating a recommended quality measure threshold value; said base stations are adapted to receive said recommended quality measure threshold value from said mobile switching center; and said base stations are arranged to control power of their respective transmissions by said mobile stations, by an uplink closed-loop power control algorithm, for maintaining the quality of radio signals on each said active CDMA communication link maximally close to said recommended threshold value.
Claim 2
Independent Claim
176 words
A system for controlling the quality of radio signals on active code division multiple access (CDMA) communication links between a plurality of mobile stations and a plurality of base stations connected to a mobile switching center of a CDMA cellular telecommunications system, wherein: each of said base stations is adapted to measure the quality of each said active CDMA communication link and to report, for each active CDMA radio communication over each said link, to said mobile switching center, each corresponding measured value of communication signal quality; said mobile switching center is adapted to perform an averaging of said measured values of communication signal quality, for calculating a recommended quality measure threshold value; said base stations are adapted to receive said recommended quality measure threshold value from said mobile switching center; and said base stations are arranged to control power of their respective transmissions by said mobile stations, by an uplink closed-loop power control algorithm, for maintaining the quality of radio signals on each said active CDMA communication link maximally close to said recommended threshold value.
Claim 3
Dependent Claim
42 words
A system according to claim 1, wherein: said mobile switching center is adapted to perform an averaging operation on said measured values of quality reported thereto, over some or all of the active CDMA communications links controlled by said mobile switching center.
Claim 4
Dependent Claim
18 words
A system according to claim 1, wherein: each said measured value of quality is a signal-to-interference-plus noise ratio.
Claim 5
Dependent Claim
18 words
A system according to claim 2, wherein: each said measured value of quality is a signal-to-interference-plus noise ratio.
Claim 6
Dependent Claim
18 words
A system according to claim 1, wherein: each said measured value of quality is a bit error rate.
Claim 7
Dependent Claim
18 words
A system according to claim 2, wherein: each said measured value of quality is a bit error rate.
Claim 8
Independent Claim
163 words
A method for controlling the quality of radio signals on active code division multiple access (CDMA) communication links between a plurality of mobile stations and a plurality of base stations connected to a mobile switching center of a CDMA cellular telecommunications system, wherein: each of said base stations measuring the quality of each said active CDMA communication link and reporting, for each active CDMA radio communication over each said link, to said mobile switching center, each corresponding measured value of communication signal quality; said mobile switching center performing an averaging of said measured values of communication signal quality, and calculating a recommended quality measure threshold value; said base stations receiving said recommended quality measure threshold value from said mobile switching center; and said base stations controlling power of their respective transmissions by said mobile stations, by an uplink closed-loop power control algorithm, for maintaining the quality of radio signals on each said active CDMA communication link maximally close to said recommended threshold value.
Claim 9
Independent Claim
163 words
A method for controlling the quality of radio signals on active code division multiple access (CDMA) communication links between a plurality of mobile stations and a plurality of base stations connected to a mobile switching center of a CDMA cellular telecommunications system, wherein: each of said base stations measuring the quality of each said active CDMA communication link and reporting, for each active CDMA radio communication over each said link, to said mobile switching center, each corresponding measured value of communication signal quality; said mobile switching center performing an averaging of said measured values of communication signal quality, and calculating a recommended quality measure threshold value; said base stations receiving said recommended quality measure threshold value from said mobile switching center; and said base stations controlling power of their respective transmissions by said mobile stations, by an uplink closed-loop power control algorithm, for maintaining the quality of radio signals on each said active CDMA communication link maximally close to said recommended threshold value.
Claim 10
Dependent Claim
39 words
A method according to claim 7, wherein: said mobile switching center performs an averaging operation on said measured values of quality reported thereto, over some or all of the active CDMA communications links controlled by said mobile switching center.
Claim 11
Dependent Claim
18 words
A method according to claim 7, wherein: each said measured value of quality is a signal-to-interference-plus noise ratio.
Claim 12
Dependent Claim
18 words
A method according to claim 8, wherein: each said measured value of quality is a signal-to-interference-plus noise ratio.
Claim 13
Dependent Claim
18 words
A method according to claim 7, wherein: each said measured value of quality is a bit error rate.
Claim 14
Dependent Claim
18 words
A method according to claim 8, wherein: each said measured value of quality is a bit error rate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2000-04-21 | 2000-10-21 | 2001-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-21 | 2004-10-21 | 2005-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-21 | 2008-10-21 | 2009-04-22 | $7700.00 | Window Closed / Lapsed |