WO2001028105A1 - Radio transceiver - Google Patents

Radio transceiver Download PDF

Info

Publication number
WO2001028105A1
WO2001028105A1 PCT/EP2000/009707 EP0009707W WO0128105A1 WO 2001028105 A1 WO2001028105 A1 WO 2001028105A1 EP 0009707 W EP0009707 W EP 0009707W WO 0128105 A1 WO0128105 A1 WO 0128105A1
Authority
WO
WIPO (PCT)
Prior art keywords
transceiver
temperature
operating
slots
controlling
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2000/009707
Other languages
English (en)
French (fr)
Inventor
Jacob MANNERSTRÅLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to AU76618/00A priority Critical patent/AU7661800A/en
Priority to AT00966110T priority patent/ATE265107T1/de
Priority to JP2001530211A priority patent/JP2003511950A/ja
Priority to DE60010104T priority patent/DE60010104D1/de
Priority to EP00966110A priority patent/EP1222742B1/en
Publication of WO2001028105A1 publication Critical patent/WO2001028105A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04B1/02—Transmitters
    • H04B1/03—Constructional details, e.g. casings, housings
    • H04B1/036—Cooling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate

Definitions

  • This invention relates to a radio transceiver, in particular for use in a system in which data can be transmitted at variable rates. More specifically, the invention relates to a method of controlling a rate of data transmission, in order to maintain a desired transceiver operating parameter within a desired range.
  • TDMA systems such as GSM/EDGE
  • CDMA systems such as those defined in IS95
  • -CDMA wideband CDMA
  • JP-A-9-326749 discloses a mobile communications device, for use in a TDMA system, in which packet data can be transmitted either continuously, that is in all three time slots of the TDMA system, or intermittently, that is in only one or two of the three TDMA slots.
  • the device switches between continuous and intermittent mode in dependence on a temperature detected by a temperature sensor located in the vicinity of the power module of the device, which contains the amplifying stage.
  • the present invention relates to a device, and a method of control thereof, in which a rate at which data is transmitted is determined by a sensed temperature which has a direct effect on the comfort of the user.
  • the sensed temperature may be the temperature of the casing of the device.
  • the temperature sensor may have a dual function within the device.
  • the temperature sensor may also detect the temperature of a display within the device.
  • the temperature sensor may also detect the temperature of a crystal oscillator within the device.
  • the present invention also relates to a device, and a method of control thereof, in which a rate at which data is transmitted is determined by the remaining capacity of a battery thereof. This can be achieved by directly detecting the remaining battery capacity. Alternatively, the remaining battery capacity can be estimated on the basis of a measure of past usage of the device. For example, the past usage can be determined as a function of the number of timeslots in which the device has transmitted data, or the number of timeslots in which the device has received data, or the sum of these two. Alternatively, the current consumption of the terminal can be used as a measure of the past usage, and hence of the remaining battery capacity.
  • the rate at which data can be transmitted can be reduced.
  • the present invention also relates to a device, and a method of control thereof, in which a rate at which data is transmitted is determined by the mode of operation thereof.
  • a mobile communications device may be operable in a hands free mode, or with a loudspeaker, and in- such modes the rate at which data is transmitted can be correspondingly altered.
  • the rate at which data is transmitted is determined by the number of slots in a TDMA or similar frame structure which are allocated to such transmissions.
  • the invention applied to all systems with a TDMA access method, including for example D-AMPS, GSM, PDC, and developments thereof.
  • the decision that the rate of data transmission is to be reduced is advantageously taken within the mobile device itself.
  • the device then preferably signals this to a base station or other similar controller.
  • Figure 1 shows a mobile phone in accordance with an aspect of the invention.
  • Figure 2 is a schematic representation of internal components of the phone of Figure 1.
  • Figure 3 shows first transmissions from a device in accordance with the invention.
  • Figure 4 shows second transmissions from a device in accordance with the invention.
  • Figure 5 is a plot of temperature against time for a device in accordance with the invention.
  • Figure 6 is a flow chart illustrating a method in accordance with the invention.
  • Figure 7 is a plot of battery capacity against time for a device in accordance with the invention.
  • Figure 8 shows third transmissions from a device in accordance with the invention.
  • Figure 1 shows a mobile phone 100 which is of generally conventional form, except as described further herein.
  • the phone 100 has a casing 101, which contains a display, for example a liquid crystal display, 102 and a keypad 103.
  • the invention is applicable to any device, and in particular to any portable radioco munications device.
  • the phone is controlled on the basis of a measured temperature thereof.
  • the phone 100 is provided with one or more temperature sensors, for example a temperature sensor 108 for detecting a temperature of the casing 101, where it is typically held by a user, or a temperature sensor 109 for detecting a temperature of of the display 102, or a temperature sensor 110 for detecting a temperature of of the keypad 103, since the display and keypad are typically adjacent to the user's face in use of the device.
  • a temperature sensor 107 could also be provided which detects the temperature of the battery 104.
  • the device may include at least one sensor which detects a temperature of a part of the device which has a direct effect on the comfort of the user, for example because it is contacted by the user.
  • Figure 2 is a schematic representation of a part of the electronic circuitry within the phone 100.
  • the circuitry includes a processor 111, as well as other integrated circuits, filter 112, and power amplifier 113, and a connection to the battery 104.
  • the phone 100 may be provided with one or more temperature sensors which detect the temperature of any of these components.
  • the temperature sensor which is used may have a dual function.
  • the display 109 may include a temperature sensor which is also used to control the contrast thereof.
  • the device may include a temperature sensor which is used to detect the temperature of a crystal oscillator within the electronic circuitry, in order to compensate for variations in the performance thereof .
  • Figure 3 illustrates a TDMA structure in which the device is operated.
  • the device may be a GSM phone, or any other terminal operating in a TDMA system, or other system in which data is transmitted in timeslots. In the case of GSM, each frame is divided into eight timeslots, numbered 0-7. In the situation illustrated in Figure 3, the device is active in three slots out of eight, namely slots 5, 6 and 7.
  • the device is active in only one slot out of eight, namely slot 6.
  • some data relating to a GSM phone, operated with a 3V power supply will be used.
  • a device typically dissipates 0.3 when not transmitting.
  • the transmitter uses a peak current of 1.5A. With a voltage of 3V, this gives a power of 4.5W.
  • a power of approximately 2W is transmitted through the antenna, leaving 2.5W of heat to be dissipated.
  • a network for example via a base station
  • a mobile terminal when a network (for example via a base station) instructs a mobile terminal to operate at a particular increased transmission power, it may at the same time instruct it to operate in a reduced number of time slots for transmission and/or reception.
  • the total power dissipated in the device can be controlled, and its temperature maintained within acceptable limits.
  • the terminal if it is determined that the terminal should operate at a reduced power, it may operate in an increased number of time slots for transmission and/or reception.
  • Figure 5 shows a time history of the temperature of the device, for example as measured by a temperature sensor located on or close to the casing of the device.
  • the device is transmitting during, say, three slots out of eight in each frame, and the temperature of the device is increasing (line 114) .
  • T x the temperature of the device is increasing
  • the device automatically stops transmitting data at this high rate, and reduces its transmission rate such that during time t 12 (line 115) it transmits in, say, two slots out of every eight slots within a frame.
  • the device generates heat at a rate which it can dissipate, and the temperature stabilises.
  • time t 13 (line 116) it further reduces its transmission rate and transmits in, say, just one slot out of every eight slots within a frame.
  • the temperature of the device then falls as the device is generating heat at a rate lower than that which it can dissipate .
  • FIG. 6 is a flow chart showing a method of controlling operation of the mobile device.
  • the process begins at step 123, in which the device is transmitting in a certain number of slots, n, in each frame.
  • n may therefore be a limit determined by the phone itself, based on temperature or some other intrinsic criterion.
  • step 124 it is determined whether a first particular criterion is met. For example, it is determined whether the sensed temperature of the device is at or above the threshold temperature in the case described with reference to Figure 5. If the criterion is met, the process passes to step 125, and the number, n, is reduced by one.
  • step 126 it is determined whether a second criterion is met. For example, it may be determined whether the sensed temperature of the device is below a second threshold temperature in the case described with reference to Figure 5. If the criterion is met, that is, the device has now cooled sufficiently, the process passes to step 127, and the number, n, is increased by one. Thus, for example, if the device is originally transmitting in three slots in each frame, after step 127 it transmits in four slots in each frame.
  • the process returns to step 123.
  • the maximum number of slots, in which the mobile device can transmit is determined by the mobile device on the basis of intrinsic criteria. However, since the slots are in fact allocated to the device by the system, in preferred aspects of the invention the terminal or mobile device sends a message (for example, in the case of a GSM or other cellular phone, to a base station) in an appropriate protocol, requesting that the number of allocated slots be reduced. As mentioned above, the number of slots, in which the device transmits, can be adjusted to control the temperature of a part of the device. However, other factors could be controlled. As one alternative, the remaining battery capacity could be a factor.
  • FIG. 7 shows a time history of the battery capacity of the device, for example as measured by a conventional method, such as measuring the power supplied by the battery, and the temperature thereof. During an initial period, (line 147) , the device is in standby mode, and the battery capacity remains close to
  • the device is transmitting during, say, three slots out of eight in each frame, and the battery capacity is falling quickly (line 148) .
  • the device automatically stops transmitting data at this high rate, and reduces its transmission rate such that, during time t 22 (line 149) it transmits in, say, just one slot out of every eight slots within a frame. In this way, the battery life, that is the time until the remaining capacity reaches zero, is extended.
  • Figure 8 shows, schematically, (line 154) the slots in which a device has transmitted data over a time period, which is arbitrarily divided into time units (tu) .
  • line 154 the slots in which a device has transmitted data over a time period, which is arbitrarily divided into time units (tu) .
  • One possibility is to count the total number of transmission timeslots 155, as indicated in Figure 8 by the running total value 1, 7, 12, 17, etc. The total number of transmission timeslots will give an acceptable estimate of the remaining battery life.
  • An alternative is to count the number of transmission timeslots 156 in each time unit, that is, in Figure 8, 6 slots/tu, 5 slots/tu, 5 slots/tu, etc. This will provide an acceptable estimate of the temperature of the device .
  • a further alternative is to provide a current meter which detects the current supplied to the device, or to important components thereof such as the transmitter section, receiver section, and/or baseband section.
  • the detected current can be integrated over time, and the total will give an estimate of the temperature of the device, since it will be related to the heat dissipated therein.
  • the number of slots in which the device can transmit can be controlled on the basis of an estimated temperature or battery capacity obtained in these ways .
  • the number of slots in which the device can transmit can also be controlled on the basis of other factors, such as the mode of operation of the device.
  • the device may be a phone which can be operated in a hands free mode with a loudspeaker. In that case, the device may use more power, and so it may be advantageous to place an upper limit on the number of timeslots in which the device can transmit, so that battery life is not further shortened undesirably.
  • Means may then be provided to detect the hands free operation. For example, a proximity switch may be provided to detect when the device is close to a user's head.
  • the device may be a phone which can be operated in a portable handheld mode or from a mains power supply. In that case, when the device is operated from the mains supply, the battery capacity and temperature of the device may be less of a concern.
  • the heating of the device may also be of less concern, since it will not be next to the user's head. In these situations, it may be advantageous to place a higher upper limit on the number of timeslots in which the device can transmit in that mode, and a lower upper limit when the device is handheld.
  • Means may then be provided to detect the hands free operation.
  • means may be provided to detect when an earpiece is inserted, or a proximity switch may be provided to detect when the device is close to a user's head, and may reduce the number of timeslots used in that situation.
  • the device can not transmit and receive at the same time. For example, this is true in a system with TDMA access method with multislot capability, such as GPRS. In this situation, it may be advantageous to place an upper limit on the number of timeslots in which the device can transmit data, so that more timeslots are available to receive data, or vice versa.
  • a radiocommunications system based on intrinsic criteria of the device, in order to allow specific performance targets to be met.
  • radio transceiver is used herein to mean any device which can transmit or receive signals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transmitters (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Telephone Function (AREA)
  • Burglar Alarm Systems (AREA)
  • Circuits Of Receivers In General (AREA)
PCT/EP2000/009707 1999-10-13 2000-10-04 Radio transceiver Ceased WO2001028105A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU76618/00A AU7661800A (en) 1999-10-13 2000-10-04 Radio transceiver
AT00966110T ATE265107T1 (de) 1999-10-13 2000-10-04 Funksendeempfänger
JP2001530211A JP2003511950A (ja) 1999-10-13 2000-10-04 無線トランシーバ
DE60010104T DE60010104D1 (de) 1999-10-13 2000-10-04 Funksendeempfänger
EP00966110A EP1222742B1 (en) 1999-10-13 2000-10-04 Radio transceiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9924255.4 1999-10-13
GB9924255A GB2355367A (en) 1999-10-13 1999-10-13 Adjusting allocation of transmission slots according operating conditions in a mobile telephone

Publications (1)

Publication Number Publication Date
WO2001028105A1 true WO2001028105A1 (en) 2001-04-19

Family

ID=10862693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/009707 Ceased WO2001028105A1 (en) 1999-10-13 2000-10-04 Radio transceiver

Country Status (10)

Country Link
US (1) US6934267B1 (https=)
EP (2) EP1349287B1 (https=)
JP (1) JP2003511950A (https=)
CN (2) CN100358245C (https=)
AT (2) ATE319228T1 (https=)
AU (1) AU7661800A (https=)
DE (2) DE60010104D1 (https=)
GB (1) GB2355367A (https=)
MY (1) MY126721A (https=)
WO (1) WO2001028105A1 (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004068738A1 (en) * 2003-01-31 2004-08-12 Nokia Corporation Output power control for multislot uplinks
FR2857100A1 (fr) * 2003-07-02 2005-01-07 Wavecom Procede d'estimation d'un temps d'utilisation restant pour une batterie de dispositif de radiocommunication
CN100353792C (zh) * 2004-10-07 2007-12-05 乐金电子(中国)研究开发中心有限公司 移动通信终端的电池温度自动通知装置及方法
US9667280B2 (en) 2010-09-24 2017-05-30 Qualcomm Incorporated Methods and apparatus for touch temperature management based on power dissipation history

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368499B (en) * 2000-10-26 2004-06-30 Matsushita Comm Ind Uk Ltd Mobile communications
EP3401794A1 (en) * 2002-01-08 2018-11-14 Seven Networks, LLC Connection architecture for a mobile network
GB2386507A (en) * 2002-03-15 2003-09-17 Ubinetics Ltd Controlling transmission rate
DE10241660A1 (de) * 2002-09-05 2004-03-18 Siemens Ag Verfahren zur Temperaturregelung in einem Kommunikationsendgerät und ein entsprechendes Kommunikationsendgerät
US8169981B2 (en) * 2002-10-31 2012-05-01 Motorola Mobility, Inc. Method and mobile station for controlling communication via a radio link
US20040247993A1 (en) * 2003-05-21 2004-12-09 Sony Ericsson Mobile Communications Ab System and Method of Improving Talk-Time at the End of Battery Life
EP1530383B1 (en) * 2003-11-10 2006-06-14 Research In Motion Limited Methods and system for limiting communication capabilities in mobile communication devices
US7689256B2 (en) * 2003-11-10 2010-03-30 Research In Motion Limited Methods and apparatus for limiting communication capabilities in mobile communication devices
JP2005295310A (ja) * 2004-04-01 2005-10-20 Fuji Electric Holdings Co Ltd 無線通信方法、無線通信システム、無線端末、プログラム、記録媒体
US7545272B2 (en) 2005-02-08 2009-06-09 Therasense, Inc. RF tag on test strips, test strip vials and boxes
JP4991117B2 (ja) * 2005-03-02 2012-08-01 日本電気株式会社 無線通信端末
US8774860B2 (en) * 2005-04-05 2014-07-08 Nokia Corporation Method and device for low-power FM transmission of audio data to RDS capable FM radio receiver
JP4624227B2 (ja) * 2005-09-29 2011-02-02 京セラ株式会社 通信端末、移動体通信システム及び通信制御方法
US7698578B2 (en) 2006-06-29 2010-04-13 Nokia Corporation Temperature-dependent power adjustment of transmitter
US20080059658A1 (en) * 2006-06-29 2008-03-06 Nokia Corporation Controlling the feeding of data from a feed buffer
GB0613118D0 (en) * 2006-06-30 2006-08-09 Nokia Corp Controlling a mobile device
US20080046132A1 (en) * 2006-08-18 2008-02-21 Nokia Corporation Control of heat dissipation
EP2074826A4 (en) * 2006-10-11 2011-11-09 Nokia Corp SERVICE DISCOVERY IN BROADCAST NETWORKS
CN101543123B (zh) * 2006-11-23 2014-12-24 诺基亚公司 用于维持无线电传输连续性的方法和设备
US7969928B2 (en) * 2007-03-02 2011-06-28 Motorola Solutions, Inc. Method and apparatus for battery-aware dynamic bandwidth allocation for wireless sensor networks
US7933571B2 (en) 2007-06-20 2011-04-26 Motorola Mobility, Inc. Method and apparatus for selecting a communication mode based on energy sources in a hybrid power supply
US8086229B2 (en) 2008-02-25 2011-12-27 Telefonaktiebolaget L M Ericsson (Publ) Alleviating mobile device overload conditions in a mobile communication system
GB2461556A (en) * 2008-07-03 2010-01-06 Artimi Ltd Controlling throughput to control temperature in an ultrawideband (UWB) transceiver circuit
US8953696B2 (en) 2008-08-05 2015-02-10 Intel Corporation Signal decoding systems
JP2009207167A (ja) * 2009-05-07 2009-09-10 Nokia Corp マルチスロットアップリンクのための出力電力制御
WO2010145938A1 (en) 2009-06-17 2010-12-23 Telefonaktiebolaget Lm Ericsson (Publ) Scheduling data transmissions between a mobile terminal and a base station in a wireless communications network
JP5244854B2 (ja) * 2010-05-14 2013-07-24 株式会社バッファロー 無線通信装置
WO2012024030A2 (en) 2010-07-26 2012-02-23 Seven Networks, Inc. Context aware traffic management for resource conservation in a wireless network
US20120329410A1 (en) * 2011-06-24 2012-12-27 Qualcomm Incorporated Thermal-based flow control
WO2013015835A1 (en) 2011-07-22 2013-01-31 Seven Networks, Inc. Mobile application traffic optimization
WO2014031707A1 (en) * 2012-08-20 2014-02-27 Adtran, Inc. Systems and methods for power optimized framing
JP5673701B2 (ja) * 2013-02-12 2015-02-18 富士通株式会社 基地局、通信端末、基地局の通信方法、通信端末の通信方法、通信システム
WO2014197521A1 (en) 2013-06-03 2014-12-11 Seven Networks, Inc. Blocking/unblocking algorithms for signaling optimization in a wireless network for traffic utilizing proprietary and non-proprietary protocols
EP3136796B9 (en) * 2015-08-27 2019-10-30 Kabushiki Kaisha Toshiba Transmission power control with variable transmission duration
CN105763796B (zh) * 2016-02-29 2019-03-01 Oppo广东移动通信有限公司 控制方法、控制装置及电子装置
US11507156B2 (en) * 2020-01-30 2022-11-22 Dell Products L.P. Cooling system with hyperbaric fan and evacuative fan

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394074A2 (en) * 1989-04-21 1990-10-24 Motorola, Inc. Method and apparatus for determining battery type and modifying operating characteristics
EP0407367A2 (en) * 1989-07-07 1991-01-09 Telefonaktiebolaget L M Ericsson Method and arrangement for dynamically allocating time slots to connections in a digital mobile radio system
US5519886A (en) * 1994-09-26 1996-05-21 Motorola, Inc. Method and apparatus for controlling device temperature during transmissions
US5590414A (en) * 1991-01-11 1996-12-31 Kabushiki Kaisha Toshiba Adapter unit for a portable radio telephone enabling either one of data transmission and hand-free operation
US5870685A (en) * 1996-09-04 1999-02-09 Ericsson Inc. Mobile station operations management based on battery capacity
WO2000031990A2 (en) * 1998-11-20 2000-06-02 Ericsson Inc. Thermal transmission control of wireless data modem

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5619117A (en) * 1982-06-07 1997-04-08 Norand Corporation Battery pack having memory
JPH0758922B2 (ja) * 1986-08-25 1995-06-21 株式会社日立製作所 温度上昇警告装置
US5416495A (en) * 1988-07-07 1995-05-16 Sentex Systems, Inc. Liquid-crystal display unit for electronic directory
USRE36973E (en) * 1989-10-12 2000-11-28 Seiko Epson Corporation Digitally-corrected temperature-compensated crystal oscillator having a correction-suspend control for communications service
JPH0537442A (ja) * 1991-07-26 1993-02-12 Oki Electric Ind Co Ltd 携帯電話機
US5248929A (en) * 1992-04-30 1993-09-28 Murata Machinery, Ltd. Battery time monitor for cellular telephone
US5524275A (en) 1993-12-17 1996-06-04 Ericsson Ge Mobile Communications Inc. Averaged RF exposure control
JP2606595B2 (ja) * 1994-08-29 1997-05-07 日本電気株式会社 ディジタル無線通信方式
GB2324686B (en) * 1994-09-30 1999-02-10 Motorola Inc Method for dynamically allocating wireless communication resources
JP3050365B2 (ja) * 1995-03-03 2000-06-12 日本電気株式会社 通信機器の温度制御方式
DE19536530C1 (de) * 1995-09-29 1996-11-28 Siemens Ag Schnurlos-Telekommunikationssystem mit sichergestellter Interoperabilität von Schnurlos-Telekommunikationsanwendungen, insbesondere einem GAP-spezifischen DECT-System
US5806007A (en) * 1995-10-18 1998-09-08 Telefonaktiebolaget Lm Ericsson Activity control for a mobile station in a wireless communication system
AU714919B2 (en) * 1996-04-02 2000-01-13 Nec Corporation Wireless communication equipment for remote station
GB2311910B (en) * 1996-04-03 2000-07-12 Motorola Ltd Communication system
JP2872112B2 (ja) * 1996-06-07 1999-03-17 埼玉日本電気株式会社 パケット通信用移動機の制御装置
FI106759B (fi) * 1996-11-13 2001-03-30 Nokia Mobile Phones Ltd Matkaviestimen lähetystehon rajoitinjärjestelmä
JP2872156B2 (ja) * 1996-11-13 1999-03-17 日本電気テレコムシステム株式会社 通信携帯端末
JP3528477B2 (ja) * 1996-11-18 2004-05-17 シャープ株式会社 無線送受信装置
FI104135B (fi) * 1997-06-24 1999-11-15 Nokia Mobile Phones Ltd Aikajakoiset monikäyttöradiojärjestelmät
KR100234132B1 (ko) * 1997-07-26 1999-12-15 윤종용 이동통신단말기의 배터리 사용기간 연장방법
JP3374712B2 (ja) * 1997-08-08 2003-02-10 三菱電機株式会社 無線通信端末器
JP2991167B2 (ja) * 1997-08-27 1999-12-20 三菱電機株式会社 Ｔｄｍａ可変スロット割当方法
US6044069A (en) * 1997-10-29 2000-03-28 Conexant Systems, Inc. Power management system for a mobile station
US6169884B1 (en) * 1998-04-06 2001-01-02 Sierra Wireless, Inc. Method and apparatus for reducing power in radio transmitters
GB2339113B (en) * 1998-06-30 2003-05-21 Nokia Mobile Phones Ltd Data transmission in tdma system
US6433512B1 (en) * 1999-01-27 2002-08-13 Telefonaktebolaget L M Ericsson (Publ) Power consumption reporting by an accessory of an electronic device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394074A2 (en) * 1989-04-21 1990-10-24 Motorola, Inc. Method and apparatus for determining battery type and modifying operating characteristics
EP0407367A2 (en) * 1989-07-07 1991-01-09 Telefonaktiebolaget L M Ericsson Method and arrangement for dynamically allocating time slots to connections in a digital mobile radio system
US5590414A (en) * 1991-01-11 1996-12-31 Kabushiki Kaisha Toshiba Adapter unit for a portable radio telephone enabling either one of data transmission and hand-free operation
US5519886A (en) * 1994-09-26 1996-05-21 Motorola, Inc. Method and apparatus for controlling device temperature during transmissions
US5870685A (en) * 1996-09-04 1999-02-09 Ericsson Inc. Mobile station operations management based on battery capacity
WO2000031990A2 (en) * 1998-11-20 2000-06-02 Ericsson Inc. Thermal transmission control of wireless data modem

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004068738A1 (en) * 2003-01-31 2004-08-12 Nokia Corporation Output power control for multislot uplinks
CN100505575C (zh) * 2003-01-31 2009-06-24 诺基亚有限公司 多时隙上行链路的输出功率控制
US7574229B2 (en) 2003-01-31 2009-08-11 Nokia Corporation Output power control in multislot uplinks
FR2857100A1 (fr) * 2003-07-02 2005-01-07 Wavecom Procede d'estimation d'un temps d'utilisation restant pour une batterie de dispositif de radiocommunication
WO2005006794A1 (fr) * 2003-07-02 2005-01-20 Wavecom Procede d’estimation d’un temps d’utilisation restant pour une batterie de dispositif de radiocommunication
CN100353792C (zh) * 2004-10-07 2007-12-05 乐金电子(中国)研究开发中心有限公司 移动通信终端的电池温度自动通知装置及方法
US9667280B2 (en) 2010-09-24 2017-05-30 Qualcomm Incorporated Methods and apparatus for touch temperature management based on power dissipation history

Also Published As

Publication number Publication date
CN1211935C (zh) 2005-07-20
ATE319228T1 (de) 2006-03-15
DE60026381D1 (de) 2006-04-27
JP2003511950A (ja) 2003-03-25
CN1409900A (zh) 2003-04-09
DE60010104D1 (de) 2004-05-27
CN1642024A (zh) 2005-07-20
GB9924255D0 (en) 1999-12-15
EP1349287A1 (en) 2003-10-01
GB2355367A (en) 2001-04-18
EP1222742A1 (en) 2002-07-17
ATE265107T1 (de) 2004-05-15
US6934267B1 (en) 2005-08-23
EP1222742B1 (en) 2004-04-21
MY126721A (en) 2006-10-31
CN100358245C (zh) 2007-12-26
EP1349287B1 (en) 2006-03-01
AU7661800A (en) 2001-04-23

Similar Documents

Publication Publication Date Title
US6934267B1 (en) Time slot allocation control based on temperature in a radio transceiver
KR100514569B1 (ko) 무선 통신 유닛에서 타이밍 신호를 발생시키기 위한 방법 및 장치
US5526398A (en) Method of operating a combination radiotelephone and paging device
EP2039190B1 (en) Electronic device power management system
KR100357014B1 (ko) 이동 단말, 이동 통신 시스템, 및 이동 단말의 소비 전력억제 방법
US5815821A (en) Method and a device for conserving power in a battery powered transceiver
KR100713007B1 (ko) 이동 통신 단말기 및 그 셀 신호 전력 측정 주기 조정 방법
US20130003636A1 (en) System and method for coordination of wireless maintenance channel power control
US6313832B1 (en) Remaining battery capacity display device
US20030144042A1 (en) Negotiation of position information during low battery life
US7194282B2 (en) Method for controlling transmitting power in a wireless communication device
US20030086383A1 (en) Current reduction by receiver linearity adjustment in a communication device
US6408020B1 (en) Dual-mode radio communication device having function for selectively using analog or digital mode
US6597929B1 (en) Method for reducing power consumption of a radio terminal by sensing duration of nonservice and/or varying receive period
EP1107548A2 (en) Battery changing method during call processing in wireless telephone set
KR20020013448A (ko) 이동국의 배터리 소비를 감소시키고 접속 용량이 감소되는것을 방지할 수 있는 송신 전력 제어 시스템 및 방법
US6009309A (en) Method of operation a combination radiotelephone and paging device and method of operation
KR20060035771A (ko) 개선된 배터리로 전원 공급되는 장치들
JP3862546B2 (ja) 無線通信端末装置
KR20080042367A (ko) Ｄｂｄｍ 단말기의 수신전계강도에 따른 전원 관리 장치 및방법
JP2005130122A (ja) 周波数ホッピング無線装置
GB2393610A (en) Clock calibration in a mobile communications device
JP2002142014A (ja) 通信装置
JP2004048488A (ja) 携帯端末装置及び移動体通信端末
KR100556739B1 (ko) 이동 통신 단말기의 페이징 주기 설정 방법

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
ENP Entry into the national phase

Ref country code: JP

Ref document number: 2001 530211

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 2000966110

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 008170630

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 2000966110

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 2000966110

Country of ref document: EP