JPH0491522A - Mobile communication equipment - Google Patents

Mobile communication equipment

Info

Publication number
JPH0491522A
JPH0491522A JP20971990A JP20971990A JPH0491522A JP H0491522 A JPH0491522 A JP H0491522A JP 20971990 A JP20971990 A JP 20971990A JP 20971990 A JP20971990 A JP 20971990A JP H0491522 A JPH0491522 A JP H0491522A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
frequency
used
surrounding area
section
radio wave
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.)
Pending
Application number
JP20971990A
Inventor
Tetsuo Hanazawa
Hiroshi Yoshida
Original Assignee
Nippon Telegr & Teleph Corp <Ntt>
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

Links

Abstract

PURPOSE: To easily install a new base station and to use an additional frequency by enabling a base station to detect frequencies used in its surrounding area and to assign a frequency which is not used in the surrounding area or another frequency which does not cause interference even when the frequency is used to its own station.
CONSTITUTION: The frequency monitoring section 11 of a base station 1-n monitors the frequency of the control channel used in the radio zone of its surrounding area. The controlling section 12 of the station 1-n detects frequencies used in the surrounding area from the output of the section 11 and, when unused frequencies exist in the surrounding area, sets one frequency selected output of the unused frequencies to a synthesizer 13 and instructs a transmitting/ receiving section 14 to transmit a test radio wave after selecting the frequency. In this case, the section 12 checks whether or not the test radio wave causes interference from the output of the section 11. When no interference occurs, the radio wave is used. When no unused radio wave exists or when interference occurs, the same control made after the detection of frequencies used in the surrounding area is repeated.
COPYRIGHT: (C)1992,JPO&Japio
JP20971990A 1990-08-06 1990-08-06 Mobile communication equipment Pending JPH0491522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20971990A JPH0491522A (en) 1990-08-06 1990-08-06 Mobile communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20971990A JPH0491522A (en) 1990-08-06 1990-08-06 Mobile communication equipment

Publications (1)

Publication Number Publication Date
JPH0491522A true true JPH0491522A (en) 1992-03-25

Family

ID=16577515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20971990A Pending JPH0491522A (en) 1990-08-06 1990-08-06 Mobile communication equipment

Country Status (1)

Country Link
JP (1) JPH0491522A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423084A (en) * 1992-05-11 1995-06-06 Motorola, Inc. Spectrum recovery apparatus and method therefor
WO1998053631A1 (en) * 1997-05-21 1998-11-26 Kabushiki Kaisha Toshiba Cellular radio system allowing mobile station to communicate through base station connected via cdma radio channel, and base station device and mobile station device used in the same
US6032046A (en) * 1996-06-27 2000-02-29 Nec Corporation Base station frequency assigning system for a mobile communications system
EP1111845A1 (en) * 1999-06-10 2001-06-27 Matsushita Electric Industrial Co., Ltd. Base station device and method for allocating network identifier
US6434132B1 (en) 1997-02-13 2002-08-13 Nec Corporation Wireless LAN for reestablishing wireless links between hosts according to monitored desired and undesired signals
EP1274268A2 (en) * 2001-06-29 2003-01-08 NTT DoCoMo, Inc. Controlling operation of mobile base station so as to avoid radio interference
WO2009145213A1 (en) * 2008-05-27 2009-12-03 株式会社エヌ・ティ・ティ・ドコモ Used frequency setting method, network device and wireless base station
WO2010084987A1 (en) * 2009-01-26 2010-07-29 株式会社エヌ・ティ・ティ・ドコモ Mobile communication method and wireless base station
EP2254251A1 (en) * 2009-05-19 2010-11-24 Alcatel Lucent Application-agnostic communication system and method
CN102047716A (en) * 2008-05-27 2011-05-04 株式会社Ntt都科摩 Radio base station monitoring method and network device
CN102172084A (en) * 2008-10-02 2011-08-31 株式会社Ntt都科摩 Wireless base station and network device

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423084A (en) * 1992-05-11 1995-06-06 Motorola, Inc. Spectrum recovery apparatus and method therefor
US6032046A (en) * 1996-06-27 2000-02-29 Nec Corporation Base station frequency assigning system for a mobile communications system
US6434132B1 (en) 1997-02-13 2002-08-13 Nec Corporation Wireless LAN for reestablishing wireless links between hosts according to monitored desired and undesired signals
US6587445B1 (en) 1997-05-21 2003-07-01 Kabushiki Kaisha Toshiba Cellular radio system allowing mobile station to perform communication through base station to which mobile station is connected over cdma radio channel, and base station apparatus and mobile station apparatus which are used for cellular radio system
WO1998053631A1 (en) * 1997-05-21 1998-11-26 Kabushiki Kaisha Toshiba Cellular radio system allowing mobile station to communicate through base station connected via cdma radio channel, and base station device and mobile station device used in the same
EP1111845A1 (en) * 1999-06-10 2001-06-27 Matsushita Electric Industrial Co., Ltd. Base station device and method for allocating network identifier
EP1111845A4 (en) * 1999-06-10 2005-06-08 Matsushita Electric Ind Co Ltd Base station device and method for allocating network identifier
US7099694B1 (en) 1999-06-10 2006-08-29 Matsushita Electric Industrial Co., Ltd. Base station apparatus and network identifier assignment method
EP1274268A3 (en) * 2001-06-29 2006-06-21 NTT DoCoMo, Inc. Controlling operation of mobile base station so as to avoid radio interference
EP1274268A2 (en) * 2001-06-29 2003-01-08 NTT DoCoMo, Inc. Controlling operation of mobile base station so as to avoid radio interference
WO2009145213A1 (en) * 2008-05-27 2009-12-03 株式会社エヌ・ティ・ティ・ドコモ Used frequency setting method, network device and wireless base station
US8526343B2 (en) 2008-05-27 2013-09-03 Ntt Docomo, Inc. Operation frequency setting method, network device and radio base station
CN102047716A (en) * 2008-05-27 2011-05-04 株式会社Ntt都科摩 Radio base station monitoring method and network device
JP5211159B2 (en) * 2008-05-27 2013-06-12 株式会社エヌ・ティ・ティ・ドコモ Using frequency setting method, a network device and a radio base station
CN102172084A (en) * 2008-10-02 2011-08-31 株式会社Ntt都科摩 Wireless base station and network device
JP2010171885A (en) * 2009-01-26 2010-08-05 Ntt Docomo Inc Mobile communication method and radio base station
WO2010084987A1 (en) * 2009-01-26 2010-07-29 株式会社エヌ・ティ・ティ・ドコモ Mobile communication method and wireless base station
US8830928B2 (en) 2009-01-26 2014-09-09 Ntt Docomo, Inc. Mobile communication method and radio base station
EP2254251A1 (en) * 2009-05-19 2010-11-24 Alcatel Lucent Application-agnostic communication system and method

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