US6097972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for processing power control signals in CDMA mobile telephone system
Assignee: Qualcomm Inc
•
Filing: 1997-08-29
•
Granted: 2000-08-01
•
Expires: 2017-08-29
Abstract
Abstract The transmitted power of a mobile telephone is established by power control bits that are transmitted in a traffic channel from a base station and that are demodulated by a rake receiver in the telephone. The rake receiver includes a plurality of demodulators that demodulate respective fingers of the traffic channel which may be caused by multipath conditions, with the power control bits from each demodulator being combined with the power control bits of the other demodulators in the rake receiver regardless of whether the demodulators are in lock with their respective fingers. The combined power control signal from a rake receiver associated with a first base station is then tested against a threshold. If the combined power is at least equal to the threshold, the combined power control signal is sent to a logic combiner. If other base stations are communicating with the mobile telephone, the combined power control signal from each of these other base stations is also sent to the logic combiner. If any power control signal commands the mobile telephone to decrease its transmitted power, it does so; otherwise, it increases its transmitted power. Alternatively, the power control bits from each demodulator in a rake receiver can be blocked if the finger energy falls below a threshold that depends on the number of fingers from the associated base station.
Inventors
- 👤 Keith W. Saints
- 👤 Edward G. Tiedemann, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:39
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/38; H04W52/42; H04W88/00; H04W88/02
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
129 words
A mobile telephone for receiving signals from a base station, comprising: a searcher; a first demodulator controlled by the searcher for demodulating a first signal from the base station, the first signal propagating to the mobile telephone via a first path; a second demodulator controlled by the searcher for demodulating a second signal from the base station, the second signal propagating to the mobile telephone via a second path; a combiner for combining corresponding power control bits from the first and second signals regardless of whether the respective demodulator is in lock with the respective signal to thereby generate a first power command; and a processor for passing the first power command when a comparison energy at least equals an energy threshold, and otherwise blocking the first power command.
Claim 2
Dependent Claim
129 words
A mobile telephone for receiving signals from a base station, comprising: a searcher; a first demodulator controlled by the searcher for demodulating a first signal from the base station, the first signal propagating to the mobile telephone via a first path; a second demodulator controlled by the searcher for demodulating a second signal from the base station, the second signal propagating to the mobile telephone via a second path; a combiner for combining corresponding power control bits from the first and second signals regardless of whether the respective demodulator is in lock with the respective signal to thereby generate a first power command; and a processor for passing the first power command when a comparison energy at least equals an energy threshold, and otherwise blocking the first power command.
Claim 3
Dependent Claim
21 words
The telephone of claim 1, further comprising a switch controlled by the processor for passing and blocking the first power command.
Claim 4
Dependent Claim
94 words
The telephone of claim 2, wherein the switch is a first switch, the signal is received from a second base station, and the telephone further comprises: means for generating a second power command in response to the signal received from the second base station; a second switch controlled by the processor for passing and blocking the second power command; and a logic combiner for receiving the power commands and generating a power control signal in response thereto, the power control signal causing an increase or decrease in a transmitted power of the mobile telephone.
Claim 5
Dependent Claim
19 words
The telephone of claim 1, wherein the comparison energy is based on the energy of the first power command.
Claim 6
Dependent Claim
20 words
The telephone of claim 1, wherein the comparison energy is based on the energy of the first and second signals.
Claim 7
Dependent Claim
12 words
The telephone of claim 3, in combination with a mobile telephone system.
Claim 8
Dependent Claim
90 words
A mobile telephone for receiving a signal from a base station, comprising: a searcher; a rake receiver including a plurality of demodulators controlled by the searcher for demodulating respective signal fingers from the base station, each signal finger propagating to the mobile telephone via a respective path; and a processor for passing a power control bit from a signal only when an energy associated with the signal at least equals an energy threshold, the energy threshold being established in response to the number of signals input to the rake receiver.
Claim 9
Dependent Claim
90 words
A mobile telephone for receiving a signal from a base station, comprising: a searcher; a rake receiver including a plurality of demodulators controlled by the searcher for demodulating respective signal fingers from the base station, each signal finger propagating to the mobile telephone via a respective path; and a processor for passing a power control bit from a signal only when an energy associated with the signal at least equals an energy threshold, the energy threshold being established in response to the number of signals input to the rake receiver.
Claim 10
Dependent Claim
51 words
The telephone of claim 7, further comprising a plurality of power control switches associated with respective demodulators and controlled by the processor for passing and blocking power control bits from the respective demodulators; and a combiner for combining corresponding power control bits from the switches to thereby generate first power commands.
Claim 11
Dependent Claim
82 words
The telephone of claim 8, wherein the base station is a first base station and the signal is received from a second base station, and the telephone further comprises: means for generating a second power command in response to the signal received from the second base station; and a logic combiner for receiving the power commands and generating a power control signal in response thereto, the power control signal causing an increase or decrease in a transmitted power of the mobile telephone.
Claim 12
Dependent Claim
12 words
The telephone of claim 9, in combination with a mobile telephone system.
Claim 13
Dependent Claim
59 words
A communication device, comprising: a rake receiver including demodulators for demodulating a plurality of fingers of a signal from a base station, the signal including power control bits; and a combiner for combining corresponding power control bits from the demodulators regardless of whether the demodulators are in lock with their respective fingers to thereby generate a first power command.
Claim 14
Dependent Claim
59 words
A communication device, comprising: a rake receiver including demodulators for demodulating a plurality of fingers of a signal from a base station, the signal including power control bits; and a combiner for combining corresponding power control bits from the demodulators regardless of whether the demodulators are in lock with their respective fingers to thereby generate a first power command.
Claim 15
Dependent Claim
32 words
The device of claim 11, further comprising: a processor for passing the first power command when a comparison energy at least equals an energy threshold, and otherwise blocking the first power command.
Claim 16
Dependent Claim
21 words
The device of claim 12, further comprising a switch controlled by the processor for passing and blocking the first power command.
Claim 17
Dependent Claim
93 words
The device of claim 13, wherein the switch is a first switch, the signal is received from a second base station, and the device further comprises: means for generating a second power command in response to the signal received from the second base station; a second switch controlled by the processor for passing and blocking the second power command; and a logic combiner for receiving the power commands and generating a power control signal in response thereto, the power control signal causing an increase or decrease in a transmitted power of the device.
Claim 18
Dependent Claim
19 words
The device of claim 12, wherein the comparison energy is based on the energy of the first power command.
Claim 19
Dependent Claim
17 words
The device of claim 12, wherein the comparison energy is based on the energy of the fingers.
Claim 20
Dependent Claim
12 words
The device of claim 11, in combination with a mobile telephone system.
Claim 21
Independent Claim
136 words
A method for establishing a transmitted power of a mobile telephone in a mobile telephone system having at least first and second base stations, each transmitting a common traffic signal to the mobile telephone, comprising the steps of: demodulating a first finger of the traffic signal from the first base station, the first finger propagating to the mobile telephone via a first path; demodulating a second finger of the traffic signal from the first base station, the second finger propagating to the mobile telephone via a second path; combining corresponding power control bits from the first and second fingers regardless of the strengths of the fingers to thereby generate a first power command; and passing the first power command when a comparison energy at least equals an energy threshold, and otherwise blocking the first power command.
Claim 22
Independent Claim
136 words
A method for establishing a transmitted power of a mobile telephone in a mobile telephone system having at least first and second base stations, each transmitting a common traffic signal to the mobile telephone, comprising the steps of: demodulating a first finger of the traffic signal from the first base station, the first finger propagating to the mobile telephone via a first path; demodulating a second finger of the traffic signal from the first base station, the second finger propagating to the mobile telephone via a second path; combining corresponding power control bits from the first and second fingers regardless of the strengths of the fingers to thereby generate a first power command; and passing the first power command when a comparison energy at least equals an energy threshold, and otherwise blocking the first power command.
Claim 23
Dependent Claim
56 words
The method of claim 18, further comprising the steps of: generating a second power command in response to the traffic signal received from the second base station; and generating a power control signal in response to the power commands, the power control signal causing an increase or decrease in the transmitted power of the mobile telephone.
Claim 24
Dependent Claim
18 words
The method of claim 18, comprising basing the comparison energy on the energy of the first power command.
Claim 25
Dependent Claim
19 words
The method of claim 18, comprising basing the comparison energy on the energy of the first and second fingers.
Claim 26
Independent Claim
93 words
A method for establishing a transmitted power of a mobile telephone in a mobile telephone system having at least first and second base stations, each transmitting a common traffic signal to the mobile telephone, comprising the steps demodulating respective signal fingers from the first base station, each signal finger propagating to the mobile telephone via a respective path; and passing a power control bit from a finger only when an energy associated with the finger at least equals an energy threshold, the energy threshold being established in response to the number of fingers.
Claim 27
Independent Claim
93 words
A method for establishing a transmitted power of a mobile telephone in a mobile telephone system having at least first and second base stations, each transmitting a common traffic signal to the mobile telephone, comprising the steps demodulating respective signal fingers from the first base station, each signal finger propagating to the mobile telephone via a respective path; and passing a power control bit from a finger only when an energy associated with the finger at least equals an energy threshold, the energy threshold being established in response to the number of fingers.
Claim 28
Dependent Claim
24 words
The method of claim 22, further comprising the steps of: combining corresponding power control bits from the fingers to thereby generate first power commands.
Claim 29
Dependent Claim
52 words
The method of claim 23, further comprising the steps of: generating second power commands in response to signals received from the second base station; and generating power control signals in response to the power commands, the power control signal causing an increase or decrease in the transmitted power of the mobile telephone.
Claim 30
Dependent Claim
177 words
In a mobile telephone in a mobile telephone system having at least first and second base stations, each base station transmitting a common traffic signal to the mobile telephone, a computer logic device comprising: a computer logic storage device readable by a digital processing system; and instructions embodied in the logic storage device, the instructions being executable by the digital processing system for performing method steps for establishing a transmitted power of the mobile telephone, the method steps comprising: demodulating a first finger of the traffic signal from the first base station, the first finger propagating to the mobile telephone via a first path; demodulating a second finger of the traffic signal from the first base station, the second finger propagating to the mobile telephone via a second path; combining corresponding power control bits from the first and second fingers regardless of the strengths of the fingers to thereby generate a first power command; and passing the first power command when a comparison energy at least equals an energy threshold, and otherwise blocking the first power command.
Claim 31
Dependent Claim
177 words
In a mobile telephone in a mobile telephone system having at least first and second base stations, each base station transmitting a common traffic signal to the mobile telephone, a computer logic device comprising: a computer logic storage device readable by a digital processing system; and instructions embodied in the logic storage device, the instructions being executable by the digital processing system for performing method steps for establishing a transmitted power of the mobile telephone, the method steps comprising: demodulating a first finger of the traffic signal from the first base station, the first finger propagating to the mobile telephone via a first path; demodulating a second finger of the traffic signal from the first base station, the second finger propagating to the mobile telephone via a second path; combining corresponding power control bits from the first and second fingers regardless of the strengths of the fingers to thereby generate a first power command; and passing the first power command when a comparison energy at least equals an energy threshold, and otherwise blocking the first power command.
Claim 32
Dependent Claim
59 words
The computer logic device of claim 25, wherein the method steps further comprise: generating a second power command in response to the traffic signal received from the second base station; and generating a power control signal in response to the power commands, the power control signal causing an increase or decrease in the transmitted power of the mobile telephone.
Claim 33
Dependent Claim
24 words
The computer logic device of claim 26, wherein the method steps comprise basing the comparison energy on the energy of the first power command.
Claim 34
Dependent Claim
25 words
The computer logic device of claim 26, wherein the method steps comprise basing the comparison energy on the energy of the first and second fingers.
Claim 35
Dependent Claim
13 words
The computer logic device of claim 25, in combination with the mobile telephone.
Claim 36
Dependent Claim
13 words
The combination of claim 29, in further combination with a mobile telephone system.
Claim 37
Dependent Claim
135 words
In a mobile telephone in a mobile telephone system having at least first and second base stations, each base station transmitting a common traffic signal to the mobile telephone, a computer logic device comprising: a computer logic storage device readable by a digital processing system; and instructions embodied in the logic storage device, the instructions being executable by the digital processing system for performing method steps for establishing a transmitted power of the mobile telephone, the method steps comprising: demodulating respective signal fingers from the first base station, each signal finger propagating to the mobile telephone via a respective path; and passing a power control bit from a finger only when an energy associated with the finger at least equals an energy threshold, the energy threshold being established in response to the number of fingers.
Claim 38
Dependent Claim
135 words
In a mobile telephone in a mobile telephone system having at least first and second base stations, each base station transmitting a common traffic signal to the mobile telephone, a computer logic device comprising: a computer logic storage device readable by a digital processing system; and instructions embodied in the logic storage device, the instructions being executable by the digital processing system for performing method steps for establishing a transmitted power of the mobile telephone, the method steps comprising: demodulating respective signal fingers from the first base station, each signal finger propagating to the mobile telephone via a respective path; and passing a power control bit from a finger only when an energy associated with the finger at least equals an energy threshold, the energy threshold being established in response to the number of fingers.
Claim 39
Dependent Claim
27 words
The computer logic device of claim 31, wherein the method steps further comprise: combining corresponding power control bits from the fingers to thereby generate first power commands.
Claim 40
Dependent Claim
55 words
The computer logic device of claim 32, wherein the method steps further comprise: generating second power commands in response to signals received from the second base station; and generating power control signals in response to the power commands, the power control signal causing an increase or decrease in the transmitted power of the mobile telephone.
Claim 41
Dependent Claim
13 words
The computer logic device of claim 31, in combination with the mobile telephone.
Claim 42
Dependent Claim
13 words
The combination of claim 34, in further combination with a mobile telephone system.
References Cited (Backward Citations)
US3310631A
Cited
US4123718A
Cited
US3714508A
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
JPH0335625A
Cited
US5212684A
Cited
EP0418865A2
Cited
WO1991007030A1
Cited
US5485486A
Cited
US5056109A
Cited
US5101501A
Cited
US5267262A
Cited
US5109390A
Cited
US5136586A
Cited
EP0444592A2
Cited
JP3035625B2
Cited
US5504773A
Cited
US5511073A
Cited
US5103459B1
Cited
US5103459A
Cited
US5390338A
Cited
US5283780A
Cited
US5258983A
Cited
US5204876A
Cited
US5414796A
Cited
US5220678A
Cited
US5159608A
Cited
US5245629A
Cited
US5640414A
Cited
US5305468A
Cited
EP0564937A1
Cited
US5465399A
Cited
WO1994006218A1
Cited
US5263050A
Cited
GB2273009A
Cited
US5299229A
Cited
US5396516A
Cited
US5341396A
Cited
US5487180A
Cited
WO1995008901A1
Cited
US5383219A
Cited
EP0671819A2
Cited
EP0680160A2
Cited
EP0680159A2
Cited
US5548616A
Cited
US5528593A
Cited
US5602833A
Cited
US5764527A
Cited
US5764687A
Cited
US5629934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |