WO2003021986A1 - Handover system - Google Patents

Handover system Download PDF

Info

Publication number
WO2003021986A1
WO2003021986A1 PCT/JP2002/008821 JP0208821W WO03021986A1 WO 2003021986 A1 WO2003021986 A1 WO 2003021986A1 JP 0208821 W JP0208821 W JP 0208821W WO 03021986 A1 WO03021986 A1 WO 03021986A1
Authority
WO
WIPO (PCT)
Prior art keywords
compress mode
field strength
unit
control apparatus
calls
Prior art date
Application number
PCT/JP2002/008821
Other languages
French (fr)
Japanese (ja)
Inventor
Toru Matsuki
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Publication of WO2003021986A1 publication Critical patent/WO2003021986A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

Abstract

A handover system includes a radio base station (201B), a radio network control apparatus (202), and a mobile radio station (203). The radio base station (201B) has a number-of-calls detection unit (231) for calculating the number of calls of the mobile radio station communicating with the radio base station, a reception electric field intensity prediction unit (232) for predicting reception field strength from the calculated number of calls of the number-of-calls detection unit, a reception field strength measurement unit (233) for actually measuring the reception field strength, an interference wave detection unit (216) to determine whether interference wave is present according a difference between the reception field strength measured by the measurement unit and the reception field strength predicted by the prediction unit, and a compress mode execution start request unit (217) used when presence of interference wave is detected by the interference wave detection unit, for requesting the radio network control apparatus to start execution of the compress mode of the mobile radio station. When the compress mode execution start request unit has requested execution of compress mode, the radio network control apparatus (202) instructs execution of the compress mode. The compress mode is executed by the instruction of the control apparatus and when a signal of a predetermined frequency is found, the mobile radio station (203) handovers to a radio base station receiving the signal of the frequency.
PCT/JP2002/008821 2001-09-03 2002-08-30 Handover system WO2003021986A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-265673 2001-09-03
JP2001265673A JP3918477B2 (en) 2001-09-03 2001-09-03 Handover system

Publications (1)

Publication Number Publication Date
WO2003021986A1 true WO2003021986A1 (en) 2003-03-13

Family

ID=19092104

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/008821 WO2003021986A1 (en) 2001-09-03 2002-08-30 Handover system

Country Status (2)

Country Link
JP (1) JP3918477B2 (en)
WO (1) WO2003021986A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4197266B2 (en) 2003-04-10 2008-12-17 株式会社エヌ・ティ・ティ・ドコモ Radio control apparatus and handover control method
EP1633159A4 (en) 2003-06-12 2011-02-23 Fujitsu Ltd Base station device and mobile communication system
JP4720977B2 (en) 2005-02-14 2011-07-13 日本電気株式会社 Base station controller, mobile communication system, and neighbor cell list filtering method
JP4787544B2 (en) * 2005-05-30 2011-10-05 富士通株式会社 Mobile communication system, compressed mode control method in the system, and base station and mobile station in the system
JP5406351B2 (en) * 2012-09-06 2014-02-05 日本電気通信システム株式会社 Wireless device, wireless communication system, control method, and control program

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08500475A (en) * 1993-06-14 1996-01-16 テレフオンアクチーボラゲツト エル エム エリクソン Discontinuous transmission for seamless handover in DS-CDMA system
JP2000069525A (en) * 1998-08-19 2000-03-03 Fujitsu Ltd Hand-over method, base station, mobile station and mobile communication system
JP2000184428A (en) * 1998-12-11 2000-06-30 Nokia Mobile Phones Ltd Method for taking inter-frequency handing-over timing and wcdma cellular radio system
JP2001224053A (en) * 2000-01-10 2001-08-17 Nokia Mobile Phones Ltd Method for preparing inter-frequency hand-over, mobile station and network component

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08500475A (en) * 1993-06-14 1996-01-16 テレフオンアクチーボラゲツト エル エム エリクソン Discontinuous transmission for seamless handover in DS-CDMA system
JP2000069525A (en) * 1998-08-19 2000-03-03 Fujitsu Ltd Hand-over method, base station, mobile station and mobile communication system
JP2000184428A (en) * 1998-12-11 2000-06-30 Nokia Mobile Phones Ltd Method for taking inter-frequency handing-over timing and wcdma cellular radio system
JP2001224053A (en) * 2000-01-10 2001-08-17 Nokia Mobile Phones Ltd Method for preparing inter-frequency hand-over, mobile station and network component

Also Published As

Publication number Publication date
JP2003078936A (en) 2003-03-14
JP3918477B2 (en) 2007-05-23

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