US5991284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subchannel control loop
Assignee: Qualcomm Inc
•
Filing: 1997-02-13
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Granted: 1999-11-23
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Expires: 2017-02-13
Abstract
Abstract Independently controlling the transmitted power of each subchannel by a subchannel control loop is described. A transmitting station generates a channel made up of a sum of subchannels wherein each subchannel or group of subchannels is amplified with a unique gain value that is varied in accordance with subchannel power control messages from the receiving station. The receiving station generates each subchannel power control message subsequent to monitoring and calculating metrics based on that received subchannel.
Inventors
- 👤 Serge Willenegger
- 👤 Yu-Chen Jou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:47
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/28; H04W52/288; H04W52/06; H04W52/08; H04W52/38; H04W52/42
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
174 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals, including; a PN demodulator that demodulates said reverse link signal in accordance with a pseudorandom noise (PN) sequence to provide a remote station signal; and a plurality of orthogonal demodulators, each of which receives said remote station signal and demodulates said remote station signal in accordance with an orthogonal demodulation sequence to provide a corresponding one of said subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals.
Claim 2
Dependent Claim
174 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals, including; a PN demodulator that demodulates said reverse link signal in accordance with a pseudorandom noise (PN) sequence to provide a remote station signal; and a plurality of orthogonal demodulators, each of which receives said remote station signal and demodulates said remote station signal in accordance with an orthogonal demodulation sequence to provide a corresponding one of said subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals.
Claim 3
Dependent Claim
178 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals a plurality of accumulators, wherein each of said accumulators receives a corresponding one of said subchannel signals and accumulates the energy of said subchannel signal for a predetermined period of time to provide an accumulated subchannel energy; and a comparator that receives said accumulated subchannel energies and compares each of said accumulated subchannel energies with a corresponding threshold value of a plurality of threshold values.
Claim 4
Dependent Claim
178 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals a plurality of accumulators, wherein each of said accumulators receives a corresponding one of said subchannel signals and accumulates the energy of said subchannel signal for a predetermined period of time to provide an accumulated subchannel energy; and a comparator that receives said accumulated subchannel energies and compares each of said accumulated subchannel energies with a corresponding threshold value of a plurality of threshold values.
Claim 5
Dependent Claim
159 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals; a plurality of decoders, wherein each of said decoders receives a corresponding subchannel signal and determines the existence of frame errors in said subchannel signal; and a comparator that compares a frame error rate based on said determined frame errors with a frame error rate threshold.
Claim 6
Dependent Claim
159 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals; a plurality of decoders, wherein each of said decoders receives a corresponding subchannel signal and determines the existence of frame errors in said subchannel signal; and a comparator that compares a frame error rate based on said determined frame errors with a frame error rate threshold.
Claim 7
Dependent Claim
33 words
The power control subsystem of claim 2 further comprising: a threshold generator that generates said plurality of threshold values in accordance with a measured frame error rate for each of said subchannel signals.
Claim 8
Dependent Claim
139 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals; and a plurality of bits, wherein each bit represents a command to increase or decrease the transmit power of said subchannel signal by a predetermined amount.
Claim 9
Dependent Claim
139 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals; and a plurality of bits, wherein each bit represents a command to increase or decrease the transmit power of said subchannel signal by a predetermined amount.
Claim 10
Dependent Claim
142 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and a plurality of gain values, wherein each gain value is applied to one of said plurality of subchannel signals to control the transmit power of said subchannel signal.
Claim 11
Dependent Claim
142 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and a plurality of gain values, wherein each gain value is applied to one of said plurality of subchannel signals to control the transmit power of said subchannel signal.
Claim 12
Dependent Claim
170 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and a plurality of values, wherein each value is made up of more than one bit and fewer than the number required to determine the entire gain value, and each of said plurality of values represents a command to increase or decrease the transmit power of said subchannel signal by said value multiplied by a predetermined amount.
Claim 13
Dependent Claim
170 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and a plurality of values, wherein each value is made up of more than one bit and fewer than the number required to determine the entire gain value, and each of said plurality of values represents a command to increase or decrease the transmit power of said subchannel signal by said value multiplied by a predetermined amount.
Claim 14
Dependent Claim
129 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals; and a modulator that modulates said power control message in accordance with a CDMA format.
Claim 15
Dependent Claim
129 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals; and a modulator that modulates said power control message in accordance with a CDMA format.
Claim 16
Dependent Claim
74 words
The power control subsystem of claim 1 further comprising: a plurality of accumulators, wherein each of said accumulators receives a corresponding one of said subchannel signals and accumulates the energy of said subchannel signal for a predetermined period of time to provide an accumulated subchannel energy; and a comparator that receives said accumulated subchannel energies and compares each of said accumulated subchannel energies with a corresponding threshold value of a plurality of threshold values.
Claim 17
Dependent Claim
55 words
The power control subsystem of claim 1 further comprising: a plurality of decoders, wherein each of said decoders receives a corresponding subchannel signal and determines the existence of frame errors in said subchannel signal; and a comparator that compares a frame error rate based on said determined frame errors with a frame error rate threshold.
Claim 18
Dependent Claim
33 words
The power control subsystem of claim 9 further comprising: a threshold generator that generates said plurality of threshold values in accordance with a measured frame error rate for each of said subchannel signals.
Claim 19
Dependent Claim
38 words
The power control system of claim 1 wherein said power control message comprises: a plurality of bits, wherein each bit represents a command to increase or decrease the transmit power of said subchannel signal by a predetermined amount.
Claim 20
Dependent Claim
41 words
The power control system of claim 1 wherein said power control message comprises: a plurality of gain values, wherein each gain value is applied to one of said plurality of subchannel signals to control the transmit power of said subchannel signal.
Claim 21
Dependent Claim
69 words
The power control system of claim 1 wherein said power control message comprises: a plurality of values, wherein each value is made up of more than one bit and fewer than the number required to determine the entire gain value, and each of said plurality of values represents a command to increase or decrease the transmit power of said subchannel signal by said value multiplied by a predetermined amount.
Claim 22
Dependent Claim
23 words
The power control system of claim 1 further comprising: a modulator that modulates said power control message in accordance with a modulation format.
Claim 23
Dependent Claim
25 words
The power control system of claim 15 wherein said modulator comprises: a modulator that modulates said power control message in accordance with a CDMA format.
Claim 24
Dependent Claim
156 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and wherein said message generator generates a power control message for adjusting the transmit power of two of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding two of said subchannel signals.
Claim 25
Dependent Claim
156 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and wherein said message generator generates a power control message for adjusting the transmit power of two of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding two of said subchannel signals.
Claim 26
Dependent Claim
156 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and wherein said message generator generates a power control message for adjusting the transmit power of three of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding three of said subchannel signals.
Claim 27
Dependent Claim
156 words
In a wireless communication system in which a remote station transmits a reverse link signal comprising a plurality of subchannel signals, a power control subsystem located in a base station for independently adjusting the transmission power of one or more of said plurality of subchannel signals, comprising: a receiver that receives said reverse link signal; a demodulator that demodulates said reverse link signal to provide said plurality of subchannel signals; and a message generator that generates a power control message for adjusting the transmit power of at least one of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding one of said subchannel signals, and wherein said message generator generates a power control message for adjusting the transmit power of three of said plurality of subchannel signals in accordance with a quality measurement or an energy measurement associated with a corresponding three of said subchannel signals.
References Cited (Backward Citations)
US3310631A
Cited
US3715508A
Cited
US4123718A
Cited
US4052565A
Cited
US4112257A
Cited
US4225976A
Cited
US4222115A
Cited
GB2022365A
Cited
US4291409A
Cited
US4301530A
Cited
US4730340A
Cited
US4472815A
Cited
US4460992A
Cited
US4580262A
Cited
US4495648A
Cited
US4641322A
Cited
US4688035A
Cited
US4635221A
Cited
US4672658A
Cited
GB2182528A
Cited
US4765753A
Cited
EP0412583A2
Cited
US4901307A
Cited
US4813040A
Cited
US4872200A
Cited
US5029331A
Cited
US4933952A
Cited
US5003533A
Cited
US4939745A
Cited
US5068849A
Cited
US5157672A
Cited
US5022046A
Cited
US5212684A
Cited
EP0418865A2
Cited
WO1991007030A1
Cited
US5056109A
Cited
US5101501A
Cited
US5267262A
Cited
US5128965A
Cited
US5136586A
Cited
EP0444592A2
Cited
US5103459B1
Cited
US5103459A
Cited
US5283780A
Cited
US5258983A
Cited
US5204876A
Cited
US5220678A
Cited
US5159608A
Cited
US5245629A
Cited
US5305468A
Cited
EP0564937A1
Cited
US5465399A
Cited
WO1994006218A1
Cited
US5263050A
Cited
GB2273009A
Cited
US5333175A
Cited
US5299229A
Cited
US5487180A
Cited
US5383219A
Cited
US5539728A
Cited
WO1995019664A1
Cited
US5671218A
Cited
EP0682418A2
Cited
US5442625A
Cited
WO1996004718A1
Cited
GB2300546A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |