Patent US6192249B1 successfully refreshed from Google Patents.
US6192249B1
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Method and apparatus for reverse link loading estimation
Assignee: Qualcomm Inc
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Filing: 1998-12-03
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Granted: 2001-02-20
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Expires: 2018-12-03
Abstract
Abstract In a wireless communication system, in order to determine a level of loading, the system enters a period of silence during which a designated remote unit continues to transmit but other remote unit transmissions are interrupted. The base station and designated remote unit perform closed loop power control on a reverse link signal received from the designated remote. A first series of power control commands accumulated and a first corresponding transmit gain adjustment value is stored. Normal operation is resumed. Once again, the base station and designated remote unit perform closed loop power control on the reverse link signal received from the designated remote unit. A second series of power control commands are accumulated and a second corresponding transmit gain adjustment value is stored. A level of loading is determined based upon the first and second transmit gain adjustment values.
Inventors
- 👤 Roberto Padovani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:42
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/28; H04W52/283; H04W52/06; H04W52/08; H04W52/30; H04W52/34; H04W52/343; H04W52/22; H04W52/221; H04W52/36
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
122 words
A method of estimating loading in a wireless communication system, comprising the steps of: entering a period of silence during which a designated remote unit continues to transmit; performing closed loop power control on a reverse link signal received from said designated remote unit; accumulating a first series of power control commands to produce a first transmit gain adjustment value; resuming normal operation in which active remote units resume transmission of reverse link signals; performing closed loop power control on said reverse link signal received from said designated remote unit; accumulating a second series of power control commands to produce a second transmit gain adjustment value; and determining a level of loading based upon said first and second transmit gain adjustment values.
Claim 2
Independent Claim
122 words
A method of estimating loading in a wireless communication system, comprising the steps of: entering a period of silence during which a designated remote unit continues to transmit; performing closed loop power control on a reverse link signal received from said designated remote unit; accumulating a first series of power control commands to produce a first transmit gain adjustment value; resuming normal operation in which active remote units resume transmission of reverse link signals; performing closed loop power control on said reverse link signal received from said designated remote unit; accumulating a second series of power control commands to produce a second transmit gain adjustment value; and determining a level of loading based upon said first and second transmit gain adjustment values.
Claim 3
Dependent Claim
19 words
The method of claim 1 , wherein said period of silence occurs simultaneously among a group of base stations.
Claim 4
Dependent Claim
20 words
The method of claim 1 , wherein said period of silence follows a silence command transmitted by a base station.
Claim 5
Dependent Claim
13 words
The method of claim 1 , wherein said period of silence occurs periodically.
Claim 6
Dependent Claim
34 words
The method of claim 1 , wherein said steps of performing closed loop power control comprise the step of transmitting said first and second series of power control commands to said designated remote unit.
Claim 7
Dependent Claim
33 words
The method of claim 1 , wherein said steps of performing closed loop power control comprise the step of adjusting a transmission power of said reverse link signal by said designated remote unit.
Claim 8
Dependent Claim
34 words
The method of claim 1 , wherein said steps of performing closed loop power control comprise the step of transmitting said first and second series of power control commands to said designated remote units.
Claim 9
Dependent Claim
28 words
The method of claim 1 , further comprising the step of using said level of loading in an admission method which admits or denies access to said system.
Claim 10
Dependent Claim
34 words
The method of claim 1 , further comprising the step of using said level of loading in a data rate determination method which controls a data rate at which remote units access said system.
Claim 11
Dependent Claim
55 words
The method of claim 1 , wherein said level of loading is proportional to TGA ( t ) - TGA ( 0 ) TGA ( t ) wherein TGA( 0 ) is equal to said first transmit gain adjustment value and wherein TGA(t) is equal to said second transmit gain adjustment value.
Claim 12
Dependent Claim
17 words
The method of claim 1 , wherein said steps of accumulating are performed by a base station.
Claim 13
Dependent Claim
18 words
The method of claim 1 , wherein said steps of accumulating are performed by said designated remote unit.
Claim 14
Independent Claim
115 words
An apparatus for load estimation in a wireless communication system, comprising: means for performing closed loop power control on a reverse link signal received from a designated remote unit; means for entering a period of silence during which said designated remote unit continues to transmit; means for accumulating a first series of power control commands to produce a first transmit gain adjustment value; means for resuming normal operation in which active remote units resume transmission of reverse link signals; means for accumulating a second series of power control commands to produce a second transmit gain adjustment value; and means for determining a level of loading based upon said first and second transmit gain adjustment values.
Claim 15
Independent Claim
115 words
An apparatus for load estimation in a wireless communication system, comprising: means for performing closed loop power control on a reverse link signal received from a designated remote unit; means for entering a period of silence during which said designated remote unit continues to transmit; means for accumulating a first series of power control commands to produce a first transmit gain adjustment value; means for resuming normal operation in which active remote units resume transmission of reverse link signals; means for accumulating a second series of power control commands to produce a second transmit gain adjustment value; and means for determining a level of loading based upon said first and second transmit gain adjustment values.
Claim 16
Dependent Claim
19 words
The apparatus of claim 13 , wherein said period of silence occurs simultaneously among a group of base stations.
Claim 17
Dependent Claim
28 words
The apparatus of claim 13 , wherein said means for performing closed loop power control comprises means for remotely adjusting a transmission power of said reverse link signal.
Claim 18
Dependent Claim
33 words
The apparatus of claim 13 , wherein said means for performing closed loop power control comprises means for transmitting said first and second series of power control commands to said designated remote units.
Claim 19
Dependent Claim
23 words
The apparatus of claim 13 , further comprising means responsive to said level of loading for admitting or denying access to said system.
Claim 20
Dependent Claim
27 words
The apparatus of claim 13 , further comprising means responsive to said level of loading for controlling a data rate at which remote units access said system.
Claim 21
Dependent Claim
55 words
The apparatus of claim 13 , wherein said level of loading is proportional to TGA ( t ) - TGA ( 0 ) TGA ( t ) wherein TGA( 0 ) is equal to said first transmit gain adjustment value and wherein TGA(t) is equal to said second transmit gain adjustment value.
Claim 22
Dependent Claim
17 words
The apparatus of claim 13 , wherein said means for accumulating are incorporated in a base station.
Claim 23
Dependent Claim
18 words
The apparatus of claim 13 , wherein said means for accumulating are incorporated in said designated remote unit.
Claim 24
Dependent Claim
116 words
A base station, comprising: a demodulator receiving a remote test unit signal and producing a demodulated signal; a signal quality determination block receiving said demodulated signal and producing an indication of quality thereof; and a digital signal processor receiving said indication of quality and determining a power control command for said remote test unit, wherein said digital signal processor accumulates a first series of power control commands corresponding to said remote test unit during a period of silence, accumulates a second series of said power control commands corresponding to said remote test unit during a period of normal operation and determines a level of loading based upon said first and second series of power control commands.
Claim 25
Dependent Claim
116 words
A base station, comprising: a demodulator receiving a remote test unit signal and producing a demodulated signal; a signal quality determination block receiving said demodulated signal and producing an indication of quality thereof; and a digital signal processor receiving said indication of quality and determining a power control command for said remote test unit, wherein said digital signal processor accumulates a first series of power control commands corresponding to said remote test unit during a period of silence, accumulates a second series of said power control commands corresponding to said remote test unit during a period of normal operation and determines a level of loading based upon said first and second series of power control commands.
References Cited (Backward Citations)
US4225976A
Cited
US5355514A
Cited
US5559790A
Cited
EP0668662A1
Cited
EP0673125A1
Cited
US5448600A
Cited
US5606729A
Cited
US5754533A
Cited
US5839056A
Cited
WO1998005129A2
Cited
US5859838A
Cited
WO1998024199A2
Cited
US5960353A
Cited
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) | 2004-02-20 | 2004-08-21 | 2005-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-20 | 2008-08-21 | 2009-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-20 | 2012-08-21 | 2013-02-20 | $7700.00 | Window Closed / Lapsed |