WO2009040928A1 - Radio terminal and base station - Google Patents

Radio terminal and base station Download PDF

Info

Publication number
WO2009040928A1
WO2009040928A1 PCT/JP2007/068948 JP2007068948W WO2009040928A1 WO 2009040928 A1 WO2009040928 A1 WO 2009040928A1 JP 2007068948 W JP2007068948 W JP 2007068948W WO 2009040928 A1 WO2009040928 A1 WO 2009040928A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission power
ranging
radio terminal
base station
ranging signal
Prior art date
Application number
PCT/JP2007/068948
Other languages
French (fr)
Japanese (ja)
Inventor
Junichi Suga
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/068948 priority Critical patent/WO2009040928A1/en
Priority to JP2009534115A priority patent/JPWO2009040928A1/en
Publication of WO2009040928A1 publication Critical patent/WO2009040928A1/en

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A base station specifies for a radio terminal, a ranging region in a radio frame which allows transmission of a predetermined signal string (such as a ranging signal) and specifies a transmission power increase amount P (dBm) of the ranging signal transmitted by a predetermined slot within the region. The radio terminal transmits the ranging signal more than once by the predetermined slot within the ranging region specified by the base station while changing the transmission power P (dBm). The base station creates transmission power adjustment information in accordance with a reception result of the ranging signal of the maximum reception intensity among the ranging signals transmitted more than once and transmits information specifying the transmission power adjustment information and the ranging signal of the maximum reception intensity to the radio terminal. The radio terminal adjusts the transmission power of time by using the transmission power adjustment information and the transmission power of the ranging signal of the maximum reception intensity.
PCT/JP2007/068948 2007-09-28 2007-09-28 Radio terminal and base station WO2009040928A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2007/068948 WO2009040928A1 (en) 2007-09-28 2007-09-28 Radio terminal and base station
JP2009534115A JPWO2009040928A1 (en) 2007-09-28 2007-09-28 Wireless terminal and base station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/068948 WO2009040928A1 (en) 2007-09-28 2007-09-28 Radio terminal and base station

Publications (1)

Publication Number Publication Date
WO2009040928A1 true WO2009040928A1 (en) 2009-04-02

Family

ID=40510841

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/068948 WO2009040928A1 (en) 2007-09-28 2007-09-28 Radio terminal and base station

Country Status (2)

Country Link
JP (1) JPWO2009040928A1 (en)
WO (1) WO2009040928A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011259019A (en) * 2010-06-04 2011-12-22 Fujitsu Ltd Radio communication device, transmission power control method and transmission power control program
JP2013201631A (en) * 2012-03-26 2013-10-03 Sumitomo Electric Ind Ltd Random access control device, radio base station device, management device, and random access control program
JP2015037293A (en) * 2013-08-16 2015-02-23 ホーチキ株式会社 Radio disaster prevention system
WO2020166022A1 (en) * 2019-02-14 2020-08-20 株式会社Ｎｔｔドコモ User equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007189373A (en) * 2006-01-12 2007-07-26 Fujitsu Ltd Communication power control method, mobile station, and base station

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10224293A (en) * 1997-01-31 1998-08-21 Nippon Telegr & Teleph Corp <Ntt> Mobile station transmission power controlling method and mobile communication system
JP4027647B2 (en) * 2001-11-22 2007-12-26 株式会社エヌ・ティ・ティ・ドコモ Communication control method, communication control system, mobile device and base station

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007189373A (en) * 2006-01-12 2007-07-26 Fujitsu Ltd Communication power control method, mobile station, and base station

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"IEEE Standard for Local and Metropolitan area network Part16:Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendent 2:Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands and Corrigendum 1", IEEE COMPUTER SOCIETY AND THE IEEE MICROWAVE THEORY AND TECHNIQUES SOCIETY, 28 February 2006 (2006-02-28), pages 567, 568 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011259019A (en) * 2010-06-04 2011-12-22 Fujitsu Ltd Radio communication device, transmission power control method and transmission power control program
JP2013201631A (en) * 2012-03-26 2013-10-03 Sumitomo Electric Ind Ltd Random access control device, radio base station device, management device, and random access control program
JP2015037293A (en) * 2013-08-16 2015-02-23 ホーチキ株式会社 Radio disaster prevention system
WO2020166022A1 (en) * 2019-02-14 2020-08-20 株式会社Ｎｔｔドコモ User equipment

Also Published As

Publication number Publication date
JPWO2009040928A1 (en) 2011-01-13

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