FI116256B - Sprittspektrumsystem och -förfarande - Google Patents

Sprittspektrumsystem och -förfarande Download PDF

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FI116256B
FI116256B FI972241A FI972241A FI116256B FI 116256 B FI116256 B FI 116256B FI 972241 A FI972241 A FI 972241A FI 972241 A FI972241 A FI 972241A FI 116256 B FI116256 B FI 116256B
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signal
power
power level
station
command
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FI972241A
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FI972241A0 (sv
FI972241A (sv
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Gary R Lomp
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Interdigital Tech Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H03G3/3047—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers for intermittent signals, e.g. burst signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0003—Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/221—TPC being performed according to specific parameters taking into account previous information or commands using past power control commands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/225—Calculation of statistics, e.g. average, variance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/228—TPC being performed according to specific parameters taking into account previous information or commands using past power values or information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362—Aspects of the step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70707—Efficiency-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Complex Calculations (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Radio Relay Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Eye Examination Apparatus (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Noise Elimination (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Radio Transmission System (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Surgical Instruments (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Burglar Alarm Systems (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Claims (25)

1. Ett system för adaptiv effektkontroll i ett cellulärt kommunikationsnät användande spritt-spektrum modulation, vilket system omfattar en första 5 kommunikationsstation, vilken sänder en viss spritt-spektrumsignal med en reglerbar sändningseffekt och en andra kommunikationsstation, vilken andra station sänder en effektkommandosignal för regiering av den första stationens sändningseffektnivä, känneteck-10 n a t därav, att: den första stationen omfattar: mottagande medel (335, 336, 334, 339) omfat- tande medel (334, 339) för insamlande och demultiplex-ering av signaler mottagna frän den första stationen 15 för mottagande av effektkommandosignalen; och regleringsmedel (345, 346, 344, 341) omfat- tande: en algoritmanordning för stegstorleken (344) för lagrande av en algoritm, med vilken algoritm den 20 första stationens sändningseffektnivä regleras; en beslutsanordning (345) för kontroll av en *;··· regleringsanordning (341) som svar pä effektkommando- ,:. signalen och den lagrade algoritmen; och * · · * .·. : nämnda regleringsanordning (341) för ökande j 25 eller minskande av den första stationens sändningsef- t » * .] ‘ fektnivä som svar pä nämnda beslutsanordning; och • · *tii medel (335, 336, 334, 339, 346) för mottagan- *·' ’ de ef fektkommandosignalen som ett rädande kommando och lagrande av det föregäende rädande kommandot som ett : 30 föregäende kommando; och * » » ’·,,,· väri de nämnda regleringsmedlen (345, 346, 344, 341) för ökande eller minskande av sändningsef- fekten med en första mängd dä det föregäende kommandot ej motsvarar det rädande kommandot och med en andra 35 mängd dä det föregäende kommandot motsvarar det rädan- ·· de kommandot, vilken första mängd avviker frän den andra mängden; och 116256 52 den andra stationen omfattar: styrmedel för en automatisk förstärkning [AGC] (228) för upprätthällande av de mottagna signa-lernas totala effektnivä omfattande en specifik signal 5 och producerande en AGC-styrsignal; medel (229, 231, 233, 241) för korrelerande av den upprätthällna signalen för mottagande av den specifikä signalen och mätande av den mottagna speci-fika signalens effektnivä; 10 medel (239, 234, 235, 237, 225, 226) för kom- binerande av AGC-styrsignalen med den uppmätta effekt-nivän och jämförande av kombinationens resultat med ett tröskelvillkor för bildande av effektkommandosig-nalen för reglerande av den första stationens sänd- 15 ningseffektnivä; och medel (242, 243, 244, 245) för kompenserande och belastande av de bäda uppmätta effektniväerna och ACG-styrsignalen innan de kombineras med medlen för kombinerande och jämförande (239, 234, 235, 236, 237, 20 225, 226).
2. System enligt patentkrav 1, känne-t e c k n a t därav, att regleringsmedlen (345, 346, • · * * · 344, 341) är anpassade att reglera sändningseffekten genom användning av olinjära steg i effektnivän.
3. System enligt patentkrav 1, känne- :/.! t e c k n a t därav, att tili AGC-medlen (228) hör en automatisk reglerkrets.
4. System enligt nägot av de föregäende pa-tentkraven 1 - 3, kännetecknat därav, att : 30 tili regleringsmedlen (341) hör en reglerbar dämpare '·[ för reglerande av sändningsef f ektnivän.
5 AGC-styrsignalen för bildande av det kombinerade re-sultatet.
5. System enligt patentkrav 1, 2 eller 3, kännetecknat därav, att tili regleringsmed-Ien (341) hör en reglerbar förstärkare för reglerande 35 av sändningseffektnivän.
6. System enligt nägot av de föregäende pa tent kraven 1 - 5, kännetecknat därav, att 116256 53 medlen för korrelering- och effektstyrning (229, 231, 233, 241) omfattar: en effektanordning (241) för mätande av ef-fektnivän i den motagna specifika signalen.
7. System enligt nägot av de föregäende pa- tentkraven 1 - 6, kännetecknat därav, att medlen för kombinerande och jämförande (239, 234, 235, 236, 237, 225, 226) multiplicerar den kompenserade och belastade uppmätta effektnivän och den kompenserade 10 och belastade AGC-styrsignalen för bildande av kombi-nationens resultat.
8. System enligt nägot av de föregäende pa-tentkraven 1 - 7, kännetecknat därav, att medlen för kombinerande och jämförande (239, 234, 235, 15 246, 237, 225, 226) logaritmiskt tili den kompenserade och belastade uppmätta effektnivän adderar den kompenserade och belastade AGC-styrsignalen för bildande av kombinationens resultat.
9. System enligt nägot av de föregäende pa-2 0 tentkraven 1-8, kännetecknat därav, att de nämnda medlen för korrelation och effektmätning (229, 231, 233, 241) omfattat en insamlare (231, 229). « ·
10. System enligt nägot av de föregäende pa- tentkraven 1 - 9, kännetecknat därav, att • · « ; ; 25 den andra mängden är en bestämd procentandel större än den första mängden.
: " 11. System enligt patentkrav 1, k ä n n e - V : t e c k n a t därav, att nämnda regleringsmedel (345, 346, 344, 341) reglerar sändningseffekten genom använ-: : : 3 0 dande av geometriska steg.
12. System enligt nägot av de föregäende pa-\ tentkraven 1 - 11, kännetecknat därav, att ·;;; ef f ektkommandosignalen uppdateras pä en frekvens inom '···' omrädet 100 Hz - 10 0kHz. V: 35
13. Förfarande för adaptiv effektkontroll i : ett cellulärt kommunikationsnät användande spritt- spektrum modulation, vilket system omfattar en första 116256 54 kommunikationsstation, vilken sänder en viss spritt-spektrumsignal med en reglerbar sändningseffekt och en andra kommunikationsstation, vilken andra station sänder en effektkommandosignal för regiering av den för-5 sta stationens sändningseffektnivä, känneteck-n a t därav, att: i den första stationen: mottas effektkommandosignalen som ett rädande kommando och det föregäende rädande kommandot lagras 10 som ett föregäende kommando; regleras genom att öka eller minska sändningsef fektnivän med en första mängd, dä det föregäende kommandot ej motsvarar det rädande kommandot och med en andra mängd, dä det föregäende kommandot mot-15 svarar det rädande kommandot, vilken första mängs av-viker frän den andra mängden; och i den andra stationen: upprätthälls de mottagna signalernas totala effektnivä omfattande en specifik signal med styrmed-20 Ien för automatisk förstärkning [AGC] (228); en AGC-styrsignal produceras med AGC-medlen (228); den upprätthällna signalen korreleras för *;·_ mottagande av den specif ikä signalen; ’· '· 25 den mottagna specifika signalens effektnivä ·, ·: mats; • ’· de bäda uppmätta e f fektniväerna och :T: AGC-styrsignalen kompenseras och belastas; AGC-styrsignalen kombineras med den uppmätta : 3 0 ef fektnivän; och ,···, kombinations resultatet jämförs med ett trös- *_ kelvillkor för bildandet av effektkommandot. • ••I
14. Förfarande enligt patentkrav 13, k ä n - netecknat därav, att den första stationens sän-35 daref fektnivä regleras genom användning av olinjära ; steg i ef fektnivän. 116256 55
15. Förfarande enligt patentkrav 13 eller 14, kännetecknat därav, att kombinationsskedet multiplicerar den kompenserade och belastade uppmätta effektnivän med den kompenserade och belastade
16. Förfarande enligt patentkrav 13 eller 14, kännetecknat därav, att kombinationsskedet logaritmiskt adderar den kompenserade och belastade 10 uppmätta effektnivän tili den kompenserade och belastade AGC-styrsignalen för bildande av det kombinerade resultatet.
17. Förfarande enligt patentkrav 13, 14, 15 eller 16, kännetecknat därav, att den andra 15 mängden är en bestämd procentandel större än den för-sta mängden.
18. Förfarande enligt patentkrav 13, kännetecknat därav, att den första stationens sändningseffekt regleras genom användande av geomet- 20 riska steg i effektnivän.
19. Förfarande enligt patentkrav 13, 14, 15, .>>>: 16, 17 eller 18, kännetecknat därav, att ef- . fektkommandosignalen uppdateras pä en frekvens inom omrädet 100 HZ - 100 kHz. *· '· 25
20. Mobil ano rdning för användning i ett cel- ·: lulärt kommunikationsnät användande sprittspektrum mo- • ’· dulation, vilken mobilanordning sänder en specif ik v : sprittspektrumsignal med en reglerbar sändningseffekt- nivä tili en basstation, vilken basstation förmedlar • 30 en effektkommandosignal för regiering av mobilanord- ningens sändningsef f ektnivä, kännetecknad därav, att mobilanordningen omfattar: mottagande medel (335, 336, 334, 339) omfat- tande medel (334, 339) för insamlande och demultiplex-;Y; 35 ering av signaler som mobilanordningen mottagit för . . : mottagande av effektkommandosignalen; och 116256 56 regleringsmedel (345, 346, 344, 341) omfat- tande: en algoritmanordning för stegstorleken (344) för lagrande av en algoritm, med vilken algoritm den 5 första stationens sändningseffektnivä regleras med re-gleringsmedlen; en beslutsanordning (345) för kontroll av en regleringsanordning (341) för ökande eller minskande av mobilanordningens sändningseffektnivä sora svar pä 10 nämnda beslutsanordning,· och nämnda regleringsanordning (341) för ökande eller minskande av den första stationens sändningsef-fektnivä som svar pä nämnda beslutsanordning; och där de nämnda regleringsmedlen (345, 346, 15 344, 341) för ökande eller minskande av sändningsef- fekten med en första mängd dä det föregäende kommandot ej motsvarar det rädande kommandot och med en andra mängd dä det föregäende kommandot motsvarar det rädande kommandot, vilken första mängd avviker frän den 2. andra mängden.
21. Mobilanordning enligt patentkrav 20 . kännetecknad därav, att tili regleringsmed len (341) hör en reglerbar dämpare för reglerande av ·1·· sändningsef f ektnivän. ” 25
22. Mobilanordning enligt patentkrav 20, *. ‘ : kännetecknad därav, att tili regleringsmed- ] 1.· Ien (341) hör en reglerbar förstärkare för reglerande ;T: av sändningseffektnivän.
23. Mobilanordning enligt patentkrav 20, 21 3. eller 22, kännetecknad därav, att den andra mängden är en bestämd procentandel större än den för-*' sta den första mängden.
24. Mobilanordning enligt patentkrav 20, kännetecknad därav, att den nämnda re- \ 35 gleringsmedlen (345, 346, 344, 341) reglerar sänd- , ; ningseffekten genom att använda geometriska steg. » k > « 116256 57
25. Mobilanordning enligt patentkrav 20, 21, 22, 23, eller 24, kännetecknad därav, att effektkommandosignalen uppdateras pä en frekvens inom omrädet 100 Hz - 100 kHz. 5 1 < · · · * ·
FI972241A 1995-01-04 1997-05-27 Sprittspektrumsystem och -förfarande FI116256B (sv)

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