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EP1579594A1 - A control solution for transmission power of mobile handset - Google Patents

A control solution for transmission power of mobile handset

Info

Publication number
EP1579594A1
EP1579594A1 EP03780473A EP03780473A EP1579594A1 EP 1579594 A1 EP1579594 A1 EP 1579594A1 EP 03780473 A EP03780473 A EP 03780473A EP 03780473 A EP03780473 A EP 03780473A EP 1579594 A1 EP1579594 A1 EP 1579594A1
Authority
EP
European Patent Office
Prior art keywords
signal
power
unit
sampling
transmit
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.)
Withdrawn
Application number
EP03780473A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jigang c/o Philips Electronics China LIU
Qingxin c/o Philips Electronics China SU
Xuecheng c/o Philips Electronics China QIAN
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP1579594A1 publication Critical patent/EP1579594A1/en
Withdrawn legal-status Critical Current

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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • 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]
    • H04W52/52—Transmission power control [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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a wireless telecommunication system in TDD
  • SIR Signal-to-lnterference Ratio
  • Gain calibration is the general means to compensate for unintentional gain
  • gain fluctuations can be caused for various reasons when
  • signals are transmitted, such as aging of components, changes in ambient
  • Another object of the present invention is to provide an apparatus and its
  • the third object of the invention is to provide an apparatus and its method
  • a transceiver for receiving and transmitting radio frequency(RF) signals
  • a front end unit for selecting a receiver mode or a transmitter mode according
  • a baseband processing unit for providing the said control signal to the said baseband
  • Fig. 1 illustrates the structure of a current multi-band, multi-mode transceiver.
  • Fig. 2 provides the structure of the multi-band, multi-mode transceiver
  • TD-SCDMA is a telecommunication system based on TDD mode, so the
  • TD-SCDMA as an example.
  • transceiver in the present invention additionally has a sampling unit, as coupling
  • TPTCL transmitter power tracking and controlling loop
  • invention consists of a transceiver, as antenna 1, a front-end unit 6, and a
  • the said front-end unit 6 consists of a switch unit 2, a coupling unit 3, a
  • the said baseband processing unit 16 consists of a transmitting baseband
  • TPTCL signal generating module 22 TPTCL signal generating module 22.
  • switch unit 2 is composed of transmitter/receiver mode selection
  • TPTCL signal generating module 22 consists of
  • the transceiver works as follows:
  • transmitter/receiver mode selection switch 20 in switch unit 2 switches antenna 1 to be connected with receiving module 5, RF signals received from antenna 1 will be
  • the transceiver in the present invention When the transceiver in the present invention is in receiver mode, it works the
  • the transceiver When the transceiver is in the mode to transmit wireless signals, the transceiver is in the mode to transmit wireless signals, the
  • transmitter/receiver mode selection switch 20 in switch unit 2 switches antenna 1 to
  • processing unit 16 is transmitted from antenna 1 by transmit/receive mode
  • receiving baseband processing unit 8 is transformed to signal in digital domain
  • the actual output power can be calculated
  • the error signal can be used to obtain a power comparison signal in
  • the power compensation signal in analog form will be obtained, such as a TPTCL signal, which can be used to control the AGC (automatic gain control)
  • modulated, amplified and filtered by transmitting module 4 will be transmitted via
  • the sampling value of the actual transmitter power can be obtained by
  • a sampling module mainly composed of coupling unit 3 and switch unit 2, the
  • the power compensation signal can be
  • module mainly composed of adding unit 13 and transmitter power control unit 12.
  • the present invention relates to an apparatus and its method thereof for
  • TPC signal provided by transmitting
  • baseband processing unit 7 is also utilized, so the apparatus and its method
  • receiving module 5 when TPTCL signal is generated, receiving module 5 and
  • receiving baseband processing unit 8 are utilized to process the coupling signal, so
  • TDD mode TD-SCDMA may not be limited to TDD mode TD-SCDMA system, but also applicable for

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)
EP03780473A 2002-12-27 2003-12-23 A control solution for transmission power of mobile handset Withdrawn EP1579594A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN02158992 2002-12-27
CNA021589925A CN1512801A (zh) 2002-12-27 2002-12-27 具有控制发射功率的移动终端及其方法
PCT/IB2003/006174 WO2004059873A1 (en) 2002-12-27 2003-12-23 A control solution for transmission power of mobile handset

Publications (1)

Publication Number Publication Date
EP1579594A1 true EP1579594A1 (en) 2005-09-28

Family

ID=32661091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03780473A Withdrawn EP1579594A1 (en) 2002-12-27 2003-12-23 A control solution for transmission power of mobile handset

Country Status (7)

Country Link
EP (1) EP1579594A1 (zh)
JP (1) JP2006512828A (zh)
KR (1) KR20050095594A (zh)
CN (1) CN1512801A (zh)
AU (1) AU2003288631A1 (zh)
TW (1) TW200520425A (zh)
WO (1) WO2004059873A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4654648B2 (ja) * 2004-10-06 2011-03-23 株式会社ケンウッド 無線通信機の送信出力調整装置およびその方法
CN102202022B (zh) * 2011-03-31 2014-02-05 京信通信系统（中国）有限公司 一种dpd系统中保护功放的方法及装置
CN103490790B (zh) * 2013-09-04 2015-05-20 乐鑫信息科技（上海）有限公司 支持IEEE802.11ac和IEEE802.11n标准的低功耗优化接收方法及系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07143056A (ja) * 1993-09-24 1995-06-02 Hitachi Ltd 移動体通信装置
JPH10173547A (ja) * 1996-12-11 1998-06-26 Matsushita Electric Ind Co Ltd 送信出力検出回路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004059873A1 *

Also Published As

Publication number Publication date
KR20050095594A (ko) 2005-09-29
TW200520425A (en) 2005-06-16
WO2004059873A1 (en) 2004-07-15
CN1512801A (zh) 2004-07-14
JP2006512828A (ja) 2006-04-13
AU2003288631A1 (en) 2004-07-22

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