SE9502802D0 - Average RF exposure control - Google Patents

Average RF exposure control

Info

Publication number
SE9502802D0
SE9502802D0 SE9502802A SE9502802A SE9502802D0 SE 9502802 D0 SE9502802 D0 SE 9502802D0 SE 9502802 A SE9502802 A SE 9502802A SE 9502802 A SE9502802 A SE 9502802A SE 9502802 D0 SE9502802 D0 SE 9502802D0
Authority
SE
Sweden
Prior art keywords
maximum
power
approached
average
level
Prior art date
Application number
SE9502802A
Other languages
English (en)
Other versions
SE9502802L (sv
Inventor
Bo Karl Lindell
Original Assignee
Ericsson Ge Mobile Communicat
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Ge Mobile Communicat filed Critical Ericsson Ge Mobile Communicat
Publication of SE9502802D0 publication Critical patent/SE9502802D0/sv
Publication of SE9502802L publication Critical patent/SE9502802L/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • 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
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/102—Power radiated at antenna
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
    • H04B2001/3844—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use with means to alert the user that a certain exposure has been reached
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Amplifiers (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Credit Cards Or The Like (AREA)
SE9502802A 1993-12-17 1995-08-10 Styrning för genomsnittlig HF-exponering SE9502802L (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/168,151 US5524275A (en) 1993-12-17 1993-12-17 Averaged RF exposure control
PCT/US1994/014649 WO1995017044A1 (en) 1993-12-17 1994-12-14 Average rf exposure control

Publications (2)

Publication Number Publication Date
SE9502802D0 true SE9502802D0 (sv) 1995-08-10
SE9502802L SE9502802L (sv) 1995-10-04

Family

ID=22610336

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9502802A SE9502802L (sv) 1993-12-17 1995-08-10 Styrning för genomsnittlig HF-exponering

Country Status (11)

Country Link
US (1) US5524275A (sv)
AU (1) AU691553B2 (sv)
CA (1) CA2154876C (sv)
DE (1) DE4499976B4 (sv)
FR (1) FR2714238B1 (sv)
GB (1) GB2290679B (sv)
NL (1) NL194022C (sv)
NO (1) NO314648B1 (sv)
SE (1) SE9502802L (sv)
SG (1) SG52384A1 (sv)
WO (1) WO1995017044A1 (sv)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5802445A (en) * 1995-07-13 1998-09-01 Globalstar L.P. Methods and apparatus for providing user RF exposure monitoring and control in a satellite communications system
US6272325B1 (en) * 1995-07-13 2001-08-07 Globalstar L.P. Method and apparatus for considering user terminal transmitted power during operation in a plurality of different communication systems
US5694431A (en) * 1996-01-17 1997-12-02 Motorola, Inc. Method and apparatus for average power control
FI106759B (sv) 1996-11-13 2001-03-30 Nokia Mobile Phones Ltd Begränsningssystem för en mobilteleapparats sändningseffekt
IT1304350B1 (it) * 1998-03-12 2001-03-15 Diego Balestra Sistema di telecomunicazione per piccole e medie citta' medianteradiofonia mobile con protezione dell'utente.
EP1069705A1 (en) * 1999-05-28 2001-01-17 Alcatel CDMA communication system and transmitter unit for a CDMA communication system with transmitter power control in case of malfunction
EP1091498A1 (de) * 1999-10-07 2001-04-11 Ascom AG Handfunktelefon und Verfahren zum Betrieb desselben
GB2355367A (en) 1999-10-13 2001-04-18 Ericsson Telefon Ab L M Adjusting allocation of transmission slots according operating conditions in a mobile telephone
FR2809274B1 (fr) * 2000-05-17 2002-10-11 Sagem Telephone mobile perfectionne et procede de parametrage du telephone
US6934515B2 (en) * 2000-06-27 2005-08-23 Wireless Avionics Ltd. Electromagnetic radiation alerting device for use with a cellular telephone
EP1175020A1 (en) 2000-07-20 2002-01-23 Alcatel Control of downlink transmission power in a cellular telecommunication system
US7558232B2 (en) * 2001-05-14 2009-07-07 Dataradio, Inc. Adaptive duty cycle management method and system for radio transmitters
US6950404B2 (en) * 2001-05-14 2005-09-27 Dataradio Inc. Adaptive duty cycle management method and system for radio transmitters
US7072475B1 (en) 2001-06-27 2006-07-04 Sprint Spectrum L.P. Optically coupled headset and microphone
US7146139B2 (en) * 2001-09-28 2006-12-05 Siemens Communications, Inc. System and method for reducing SAR values
US7053629B2 (en) * 2001-09-28 2006-05-30 Siemens Communications, Inc. System and method for detecting the proximity of a body
FI20012537L (sv) * 2001-12-20 2003-06-27 Nokia Corp Förfarande och system för effektreglering hos en trådlös kommunikationsanordning och en trådlös kommunikationsanordning
US20030119460A1 (en) * 2001-12-26 2003-06-26 Eliav Zipper Transmitted power level indicator
US7610027B2 (en) * 2002-06-05 2009-10-27 Meshnetworks, Inc. Method and apparatus to maintain specification absorption rate at a wireless node
US20040203720A1 (en) * 2002-08-20 2004-10-14 Via Technologies, Inc. Personal communication device with transmitted RF power strength indicator and warning system
KR100498964B1 (ko) * 2003-03-05 2005-07-01 삼성전자주식회사 이동단말에서의 전자파 흡수율 제어 방법 및 장치
FI20030777A0 (sv) * 2003-05-22 2003-05-22 Nokia Corp Bestämning av ordning och sändargrenar för diversitetssändning
FR2858901B1 (fr) * 2003-08-12 2005-12-09 Bouygues Telecom Sa Dispositif de determination des variations du das d'un mobile en communication
EP1533915A1 (en) * 2003-11-20 2005-05-25 Siemens Aktiengesellschaft A method for adjusting the transmission power of a radio transmitter, and a device for the same
ES2251313B1 (es) * 2004-10-08 2007-06-16 Jose Luis De La Torre Barreiro Dispositivo detector de señales de microondas.
EP1878132B1 (en) * 2005-04-29 2012-03-28 Koninklijke Philips Electronics N.V. Method and circuit arrangement for operating multi-channel transmit/receive antenna devices
US20070111681A1 (en) * 2005-11-14 2007-05-17 Alberth William P Jr Transmit power allocation in wireless communication devices
US7623886B2 (en) * 2005-12-14 2009-11-24 NDSSI Holdings, LLC Method and apparatus for transmitter calibration
US8665778B2 (en) * 2006-11-30 2014-03-04 Motorola Mobility Llc Monitoring and control of transmit power in a multi-modem wireless communication device
US8059702B2 (en) * 2006-11-30 2011-11-15 Motorola Mobility, Inc. Monitoring multiple modem transmission in a communication device
US8744519B2 (en) * 2006-12-14 2014-06-03 Motorola Mobility Llc Multimodal phone data session management enhancement that alleviates dual transmission problems
US20090047998A1 (en) * 2007-08-16 2009-02-19 Motorola, Inc. Method and apparatus for controlling power transmission levels for a mobile station having transmit diversity
JP4383480B2 (ja) * 2007-11-15 2009-12-16 株式会社エヌ・ティ・ティ・ドコモ 移動通信端末及び移動通信端末における送信電力制御方法
FR2923964A1 (fr) * 2007-11-21 2009-05-22 France Telecom Procede dynamique de regulation du niveau de puissance d'emission des terminaux de communications
US8195250B2 (en) * 2008-04-30 2012-06-05 Motorola Mobility, Inc. Method and apparatus for controlling power among modems in a multi-mode mobile communication device
US8275407B2 (en) * 2009-07-24 2012-09-25 Qualcomm Incorporated Methods and apparatus for communicating using multiple transmission power levels
US8483632B2 (en) * 2009-11-13 2013-07-09 Motorola Mobility Llc Radiated power control systems and methods in wireless communication devices
US8737934B2 (en) * 2009-11-24 2014-05-27 Symbol Technologies, Inc. Setting SAR exposure limit of mobile devices
US9564680B2 (en) 2009-12-28 2017-02-07 Green Swan, Inc. Removable and Replaceable Sound Tunnel Shell
US9191055B2 (en) * 2009-12-28 2015-11-17 Green Swan, Inc. Method and system to minimize radiation exposure from mobile phones and devices
US9137757B2 (en) * 2010-02-11 2015-09-15 Qualcomm Incorporated Method and apparatus for power control in high speed packet access (HSPA) networks
EP2410661B1 (en) * 2010-07-20 2014-10-29 BlackBerry Limited Radiation power level control system and method for a wireless communication device based on a tracked radiation history
US8538351B2 (en) 2010-07-20 2013-09-17 Blackberry Limited Radiation power level control system and method for a wireless communication device based on a tracked radiation history
US20120021707A1 (en) 2010-07-26 2012-01-26 Qualcomm Incorporated Apparatus and method for adjustment of transmitter power in a system
US8565205B2 (en) * 2010-11-04 2013-10-22 Qualcomm Incorporated Specific absorption rate backoff in power headroom report
CN103229587B (zh) 2010-11-26 2016-07-20 黑莓有限公司 用于移动通信设备的辐射方向图识别系统和方法
US8995938B2 (en) 2011-11-14 2015-03-31 Blackberry Limited Radiation power level control system and method for a wireless communication device having tunable elements
US10893488B2 (en) 2013-06-14 2021-01-12 Microsoft Technology Licensing, Llc Radio frequency (RF) power back-off optimization for specific absorption rate (SAR) compliance
GB2516052A (en) 2013-07-09 2015-01-14 Nokia Corp A display apparatus
US20150031408A1 (en) * 2013-07-25 2015-01-29 Qualcomm Incorporated System and Methods for Controlling Transmit Power on Multi-SIM Devices in Compliance with Specific Absorption Rate Limits
CN104224181B (zh) * 2014-09-26 2016-04-20 中国科学院生物物理研究所 一种多通道磁共振成像设备的sar实时监测系统及方法
KR102577176B1 (ko) * 2016-10-21 2023-09-12 삼성전자주식회사 송신 전력을 제어하기 위한 전자장치 및 방법
EP3529936A1 (en) * 2016-10-24 2019-08-28 Telefonaktiebolaget LM Ericsson (publ) Method and network node for enabling measurements on reference signals
US10224974B2 (en) 2017-03-31 2019-03-05 Microsoft Technology Licensing, Llc Proximity-independent SAR mitigation
EP3753311A1 (en) * 2018-02-16 2020-12-23 Telefonaktiebolaget Lm Ericsson (Publ) Deriving configured output powers with overlapping durations under uplink pre-emption
US11412523B2 (en) * 2018-04-06 2022-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Controlling transmitter output in a wireless communications network based on regulatory RF exposure limits
GB201913562D0 (en) * 2019-09-20 2019-11-06 Nokia Technologies Oy MPE Assistance in telecommunication systems
US12143938B2 (en) * 2020-11-13 2024-11-12 Qualcomm Incorporated Radio frequency (RF) exposure compliance
US12113563B2 (en) * 2021-04-23 2024-10-08 Intel Corporation Methods and devices for power management techniques with time averaged SAR and proximity sensor considerations
US12376047B2 (en) 2022-05-16 2025-07-29 Apple Inc. Control signaling reservation for radio-frequency exposure management
US12506505B2 (en) 2022-05-16 2025-12-23 Apple Inc. Electronic devices with application-based radio-frequency exposure management

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034297A (en) * 1976-01-13 1977-07-05 General Electric Company Circuit for disabling a radio transmitter which is continuously operated longer than a predetermined time
US4114108A (en) * 1977-05-19 1978-09-12 General Electric Company Overdrive protection circuit
US4242753A (en) * 1978-03-01 1980-12-30 Motorola, Inc. Radio transmitter time out timer
US4165493A (en) * 1978-04-17 1979-08-21 Rockwell International Corporation Protected amplifier apparatus
US4313210A (en) * 1978-04-24 1982-01-26 Motorola, Inc. Thermally responsive power control for a radio transmitter
JPS5694848A (en) * 1979-12-28 1981-07-31 Nec Corp Control system of transmitter
US4521912A (en) * 1983-06-09 1985-06-04 General Electric Company Low power indicating circuit for a radio transmitter
GB2198912A (en) * 1986-11-22 1988-06-22 Pipercross Communications Pty Radio transceiver control device
US4939786A (en) * 1987-03-09 1990-07-03 Motorola, Inc. Adaptive thermal protection for a power amplifier by remote sense
SU1427578A1 (ru) * 1987-04-02 1988-09-30 Предприятие П/Я В-8828 Радиопередатчик
JPH0239634A (ja) * 1988-07-29 1990-02-08 Nec Corp 搬送波制御装置
KR910009665B1 (ko) * 1989-05-31 1991-11-25 삼성전자 주식회사 무선 수신기의 전원 절약회로 및 그 제어방법
SE467332B (sv) * 1990-06-21 1992-06-29 Ericsson Telefon Ab L M Foerfarande foer effektreglering i ett digitalt mobiltelefonisystem
JPH06132873A (ja) * 1992-10-21 1994-05-13 Nec Corp 電力制御装置
JP3165155B2 (ja) * 1993-07-26 2001-05-14 クァルコム・インコーポレーテッド Ｒｆ送信に対する照射露出量を制御するための方法および装置

Also Published As

Publication number Publication date
FR2714238A1 (fr) 1995-06-23
US5524275A (en) 1996-06-04
NO953216D0 (no) 1995-08-16
FR2714238B1 (fr) 2001-01-05
DE4499976B4 (de) 2007-12-27
SG52384A1 (en) 1998-09-28
NO314648B1 (no) 2003-04-22
WO1995017044A1 (en) 1995-06-22
DE4499976T1 (de) 1996-01-11
NL194022B (nl) 2000-12-01
NL9420016A (nl) 1996-02-01
CA2154876C (en) 2005-05-31
SE9502802L (sv) 1995-10-04
GB2290679B (en) 1998-07-15
NO953216L (no) 1995-10-17
CA2154876A1 (en) 1995-06-22
NL194022C (nl) 2001-04-03
AU691553B2 (en) 1998-05-21
AU1440195A (en) 1995-07-03
GB2290679A (en) 1996-01-03
GB9516079D0 (en) 1995-10-11

Similar Documents

Publication Publication Date Title
SE9502802D0 (sv) Average RF exposure control
CA2071504C (en) Golf cart control system
DE69832727D1 (de) Vorrichtung und verfahren zur auswahl der art der sendeleistungsregelung
ATE207631T1 (de) Leistungssteuerprozessor für rechnersystem mit halt/wiederaufnahmefunktion-fähigkeit
TW223189B (en) A remote control unit and battery monitoring circuit therefor
CA2102793A1 (en) Method and Apparatus for Adjusting a Power Control Threshold in a Communication System
IT1277866B1 (it) Apparecchio e procedimento per minimizzare il tempo di accensione di un ricevitore operante in modo discontinuo.
GB0006296D0 (en) Apparatud for enabling and disabling a wireless communication device within a mobile computer
DE59914799D1 (de) Einrichtung zum Unterdrücken des Empfangs von fahrzeugemittierter Störstrahlung
EP1154581A3 (en) Input protection circuit for a radio frequency receiver
CA2492042A1 (en) A control system for controlling an output signal power level of a wireless transmitter
ATE31832T1 (de) Meldeanlage mit drahtloser signaluebertragung zwischen einer batteriebetriebenen unterstation und einer netzbetriebenen hauptstation.
JPS57141148A (en) Radio telephone set
MY110498A (en) Communications receiver with an adaptive squelch system
GB8621758D0 (en) Call devices
KR20000005313U (ko) 자동 출력 레벨 제어가 가능한 리모콘 시스템
JPS57186844A (en) Transmitting and receiving device
EP0940507A3 (de) Wasserarmaturensteuerung
JPS6446324A (en) Control circuit for switching transmission power of portable radio equipment
JPS5487418A (en) Radio transmitter
JPS6490623A (en) Radio equipment
JPS53117724A (en) Indoor load control check system using indoor power wiring
JPS57116433A (en) Radio transmitter
JPS56160145A (en) Acoustic device
EP0337693A3 (en) Radio communication apparatus capable of generating an audible tone controlled by a count of reception of a call signal