[특허]Method and apparatus for a portable communication device to identify its own location

[미국특허] Method and apparatus for a portable communication device to identify its own location 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01Q-003/22
출원번호	US-0888556 (1997-07-07)
발명자 / 주소	Khan Muzibul H. Boccuzzi Joseph
출원인 / 주소	Lucent Technologies Inc.
인용정보	피인용 횟수 : 40 인용 특허 : 4

초록 ▼

A method and apparatus for a portable communication device, such as a mobile radio terminal in a CDMA network, to identify its geographic location. A communication network comprises multiple base stations which transmit pilot signals, where the pilot signals of one base station are offset from the pilot signals of other base stations by integral multiples of a substantially fixed duration. Associated sync channel messages are also transmitted from which the geographic location of the base stations may be extracted. A portable communication device identifies its location by calculating the delay between the arrival time of a pilot signal from a primary base station and the arrival times of pilot signals from at least two other base stations. For each pair of base stations corresponding to one of the calculated delays, the portable communication device initially specifies its location as being on a selected one of three curves. The current location of the portable communication device is identified based upon points of intersection of the selected curves. The identified location may be stored in, transmitted from, or displayed at the portable communication device.

대표청구항 ▼

[ We claim:] [1.] Apparatus for a portable communication device to locally identify its own location within a cellular telephone network comprising:a receiver for receiving a first pilot signal transmitted from a first base station and at least second and third pilot signals transmitted from at least second and third base stations;a relative delay calculation unit coupled to the receiver for computing delays between an arrival time of the first pilot signal and arrival times of the second and third pilot signals; anda processor coupled to the relative delay unit, said processor programmed to determine the location of the portable communication device.

이 특허에 인용된 특허 (4) 인용/피인용 타임라인 분석

Sood Prem L. (Vancouver WA), Apparatus and method for locating mobile and portable radio terminals in a radio network.
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Khan Muzibul H. (Marlboro NJ) Boccuzzi Joseph (Brooklyn NY), Method and apparatus for a portable communication device to identify its own location.
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Dunn Michael J. (Issaquah WA) Atherly Don H. (Eugene OR) Reudink Douglas O. J. (Bellevue WA) Feuerstein Martin J. (Kirkland WA) Foerster Ronald E. (Seattle WA) Chuang Ching (Issaquah WA) Vendetti Din, Method and system for determining the position of a mobile receiver.
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LeBlanc Frederick W. (Arveda CO) Wilson Gregory E. (Boulder CO) Uysal Alparslan M. (Boulder CO), Positioning system and method.
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이 특허를 인용한 특허 (40) 인용/피인용 타임라인 분석

Wirola, Lauri Aarne Johannes; Laine, Tommi Antero; Raitoharju, Matti Samuli; Sirola, Niilo Torsten, Determining a position of a terminal.
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Yong-Woon Moon KR, Device and method for tracking mobile station's position in mobile communication system.
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Black, Peter John; Wu, Qiang; Padovani, Roberto; Zhao, Wanlun; Tokgoz, Yeliz; Naguib, Ayman Fawzy; Dayal, Pranav; Agashe, Parag Arun; Bhushan, Naga; Kim, Je Woo, Enhanced pilot signal.
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Wu, Qiang; Zhao, Wanlun; Black, Peter John, Enhanced pilot signal receiver.
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Simic,Emilija; Patrick,Christopher; Rowitch,Douglas; Blessent,Luca; Rick,Roland, Forward link repeater delay watermarking system.
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Rao, Bharath Narasimha; Chaudhary, Madhusudan; Anantharaman, Karthik, GEO tagging using location estimation.
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Rao, Bharath Narasimha; Chaudhary, Madhusudan; Anantharaman, Karthik, Location estimation.
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Fomukong, Mundi; Chesney, Denzil Willoughby, Location reporting satellite paging system with privacy feature.
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Jandrell, Louis H. M., Method and apparatus for rapidly estimating the doppler-error and other receiver frequency errors of global positioning system satellite signals weakened by obstructions in the signal path.
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Louis H. M. Jandrell, Method and apparatus for rapidly estimating the doppler-error and other receiver frequency errors of global positioning system satellite signals weakened by obstructions in the signal path.
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Jandrell, Louis Henry Martin, Method and system for determining carrier frequency offsets for positioning signals.
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Belcea,John M., Method and system for determining the time of arrival of a direct radio signal.
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Rudolf, Marian, Method and system for improved beacon acquisition performance with time slot and antenna sector reuse.
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Rudolf, Marian, Method and system for improved beacon acquisition performance with time slot and antenna sector reuse.
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Rudolf,Marian, Method and system for improved beacon acquisition performance with time slot and antenna sector reuse.
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Bromley, Patrick G.; Jandrell, Louis H. M.; Wise, Michael D., Method and system for processing positioning signals based on predetermined message data segment.
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Bromley, Patrick G.; Jandrell, Louis H. M.; Wise, Michael D., Method and system for processing positioning signals based on predetermined message data segment.
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Bromley, Patrick G.; Jandrell, Louis H. M.; Wise, Michael D., Method and system for processing positioning signals based on predetermined message data segment.
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Bromley, Patrick G.; Jandrell, Louis H. M.; Wise, Michael D., Method and system for processing positioning signals based on predetermined message data segment.
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Bromley,Patrick G.; Jandrell,Louis H. M.; Wise,Michael D., Method and system for processing positioning signals based on predetermined message data segment.
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Jandrell, Louis Henry Martin, Method and system for processing positioning signals in a geometric mode.
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Jandrell, Louis Henry Martin, Method and system for processing positioning signals in a geometric mode.
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Jandrell, Louis Henry Martin, Method and system for processing positioning signals in a stand-alone mode.
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Jandrell,Louis Henry Martin, Method and system for processing positioning signals in a stand-alone mode.
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Rantalainen,Timo; Moilanen,Jani; Ruutu,Ville, Methods for determining times and changes of times of transmission, radio communications system and processor.
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Meunier,Jean Luc; Snowdon,Dave, Mobile device and method for determining location of mobile device.
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Nielsen Jorgen S.,CAX ; Strawczynski Leo,CAX, Mobile radiotelephone determination using time of arrival of GPS and pilot signals.
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Glazko,Serguei; Jha,Sanjay K.; Jacobs,Paul, Mobile station location.
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Croft Thomas M. ; Dent Paul, Mobile telephone power savings method and apparatus responsive to mobile telephone location.
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Rao, Bharath Narasimha; Chaudhary, Madhusudan; Anantharaman, Karthik, Optimized system selection using location estimation.
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Rick, Roland R.; Fernandez-Corbaton, Ivan; Stein, Jeremy M.; Amerga, Messay; Ristic, Borislav; Bhatia, Ashok, Position determination system that uses A cellular communication system.
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Attar, Rashid Ahmed Akbar; Malladi, Durga Prasad; Montojo, Juan; Gaal, Peter, Position location for wireless communication systems.
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Attar, Rashid Ahmed Akbar; Malladi, Durga Prasad; Montojo, Juan; Gaal, Peter, Position location for wireless communication systems.
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Edge, Stephen W.; Black, Peter John; Wu, Qiang; Zhao, Wanlun; Tokgoz, Yeliz; Padovani, Roberto; Naguib, Ayman Fawzy; Kim, Je Woo; Dayal, Pranav; Agashe, Parag Arun, Positioning using enhanced pilot signal.
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Edge, Stephen William; Black, Peter John; Wu, Qiang; Zhao, Wanlun; Tokgoz, Yeliz; Padovani, Roberto; Naguib, Ayman Fawzy; Kim, Je Woo; Dayal, Pranav; Agashe, Parag Arun, Positioning using enhanced pilot signal.
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Kennedy, Jr., Joseph P., Pseudolite positioning system and method.
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Carlson,John Peter; Gravely,Thomas Booker; Kennedy,Joseph P.; McDaniel, Jr.,James T., System and method for CDMA geolocation.
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Herman, Carl R., System and method for locating emitters.
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Islam, Tariqul; Carlson, John; Al-Mufti, Khalid; Hannan, Ariful, System and method of UMTS UE location using uplink dedicated physical control channel and downlink synchronization channel.
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Fomukong, Mundi; Chesney, Denzil Willoughby, Updating a mobile device's location.
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[미국특허] Method and apparatus for a portable communication device to identify its own location 원문보기