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公开(公告)号：JP2001147262A
公开(公告)日：2001-05-29
申请号：JP2000304525
申请日：2000-10-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TEKIN IBRAHIM , CHEN BYRON HUA , CHIANG TUNG CHING
Abstract: PROBLEM TO BE SOLVED: To provide a better system and method determining a wireless mobile unit 2 by using only a base station. SOLUTION: A position of the wireless mobile unit 2 is determined by a measurement value of the single base station. A distance between the wireless mobile unit 2 and base station is computed by using a round trip delay value of a RF up-link signal received from the wireless mobile unit 2. Then, an arrival angle of the received signal is determined as a measurement value received from each of a plurality of antenna sectors in a multi-sector antenna. The arrival angle is determined based on the antenna signal measurement value memorized of the multi-sector antenna, and a combination of discrete sector signal measurement values corresponds to a single angle measurement value. By using the determined distance and arrival angle, the position of the wireless mobile unit 2 is easily determined by using only the measurement value of the single base station.
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公开(公告)号：BR9903778A
公开(公告)日：2000-09-05
申请号：BR9903778
申请日：1999-08-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHEN BYRON HUA , FREIDENFELDS JOHN , CHIANG TUNG CHING
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公开(公告)号：AU7163200A
公开(公告)日：2001-05-31
申请号：AU7163200
申请日：2000-11-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TEKIN IBRAHIM , CHIANG TUNG CHING , CHEN BYRON HUA , FREIDENFELDS JOHN
IPC: G01S5/12 , H04B7/06 , H04B7/08 , H04B7/10 , H04B7/26 , H04L12/28 , H04W24/00 , H04Q7/38 , H04Q7/36
Abstract: Network performance of a wireless network is enhanced by using geolocation information. The network enhancement may be achieved by determining call-dropping zones by the use geolocation information and by improving the signal quality in these call-dropping zones. The network enhancement may also be achieved in the form of increased capacity and reduced interference by utilizing geolocation information in beam steering and shaping of intelligent antennas. Rather than having antennas passively steering and shaping their beams in terms of the rays coming directly from mobiles or reflected by objects, geolocation information may be used to steer the beams (i.e., when antennas are adaptive) or select particular beams (i.e., when antennas are fixed-beam). In addition, the network enhancement may be achieved by using geolocation information in downtilt technology. The network enhancement may be further achieved by using geolocation information to reduce mobile registration requirements. The network enhancement may be also achieved by better managing the power level of a mobile. Additionally, the network enhancement may be achieved by enhancing load-balancing capabilities in a wireless system by the use of geolocation information.
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4.发明专利
公开(公告)号：AU1527800A
公开(公告)日：2000-08-24
申请号：AU1527800
申请日：2000-02-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHEN BYRON HUA , TEKIN IBRAHIM , FREIDENFELDS JOHN , CHIANG TUNG CHING
Abstract: Information obtained from one or multiple base stations is used to calculate a mobile terminal's location in a cellular system based on combining multiple estimated locations. The estimated locations are averaged using a weighted sum, where the weights reflect the quality of information or data that produced the estimated location. The estimated locations are based on information such as time difference of arrival (TDOA), time of arrival (TOA), and angle of arrival (AOA). The round-trip delay (RTD) provides TOA information, and the pilot strength measurement messages (PSMM) contain the TDOA information, AOA information and the ID of base stations that provide signals to the mobile terminal.
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公开(公告)号：AU6171299A
公开(公告)日：2000-06-22
申请号：AU6171299
申请日：1999-11-26
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHEN BYRON HUA , CHIANG TUNG CHING , HUANG HOWARD C
IPC: H04Q7/34 , G01S5/00 , G01S5/06 , G01S5/14 , G01S19/17 , G01S19/34 , G01S19/35 , H04Q7/30 , G01S5/12
Abstract: A position locator enables the detection of an originating location of a 911 caller under various RF propagation positions. Through the use of a transceiver and global positioning unit in a portable position locator, even if only one base station receiving the 911 call can be detected, the origin of the 911 call can still be located. Utilizing information from the position locator and at least one base station, an estimated distance between the position locator and the 911 caller, as well as an estimated distance between the at least one base station and the 911 caller, can be determined utilizing TOA or TDOA techniques to enable the location of the caller. An emergency vehicle carrying the position locator can constantly monitor and move toward the location of the 911 caller calling from a wireless mobile unit.
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Patent Agency Ranking
公开(公告)号：AU4466899A
公开(公告)日：2000-03-09
申请号：AU4466899
申请日：1999-08-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHEN BYRON HUA , FREIDENFELDS JOHN , CHIANG TUNG CHING
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公开(公告)号：BR0007323A
公开(公告)日：2001-08-07
申请号：BR0007323
申请日：2000-11-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TEKIN IBRAHIM , FREIDENFELDS JOHN , CHEN BYRON HUA , CHIANG TUNG CHING
Abstract: Network performance of a wireless network is enhanced by using geolocation information. The network enhancement may be achieved by determining call-dropping zones by the use geolocation information and by improving the signal quality in these call-dropping zones. The network enhancement may also be achieved in the form of increased capacity and reduced interference by utilizing geolocation information in beam steering and shaping of intelligent antennas. Rather than having antennas passively steering and shaping their beams in terms of the rays coming directly from mobiles or reflected by objects, geolocation information may be used to steer the beams (i.e., when antennas are adaptive) or select particular beams (i.e., when antennas are fixed-beam). In addition, the network enhancement may be achieved by using geolocation information in downtilt technology. The network enhancement may be further achieved by using geolocation information to reduce mobile registration requirements. The network enhancement may be also achieved by better managing the power level of a mobile. Additionally, the network enhancement may be achieved by enhancing load-balancing capabilities in a wireless system by the use of geolocation information.
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公开(公告)号：ID28430A
公开(公告)日：2001-05-24
申请号：ID20001012
申请日：2000-11-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHEN BYRON HUA , CHIANG TUNG CHING , FREIDENFELDS JOHN , TEKIN IBRAHIM
Abstract: Network performance of a wireless network is enhanced by using geolocation information. The network enhancement may be achieved by determining call-dropping zones by the use geolocation information and by improving the signal quality in these call-dropping zones. The network enhancement may also be achieved in the form of increased capacity and reduced interference by utilizing geolocation information in beam steering and shaping of intelligent antennas. Rather than having antennas passively steering and shaping their beams in terms of the rays coming directly from mobiles or reflected by objects, geolocation information may be used to steer the beams (i.e., when antennas are adaptive) or select particular beams (i.e., when antennas are fixed-beam). In addition, the network enhancement may be achieved by using geolocation information in downtilt technology. The network enhancement may be further achieved by using geolocation information to reduce mobile registration requirements. The network enhancement may be also achieved by better managing the power level of a mobile. Additionally, the network enhancement may be achieved by enhancing load-balancing capabilities in a wireless system by the use of geolocation information.
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公开(公告)号：AU6241800A
公开(公告)日：2001-04-12
申请号：AU6241800
申请日：2000-09-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TEKIN IBRAHIM , CHIANG TUNG CHING , CHEN BYRON HUA
Abstract: A location or position of a wireless mobile unit is determined using only measurements from a single base station. A distance between the wireless mobile unit and the base station is calculated utilizing a roundtrip delay value of an RF uplink signal received from a wireless mobile unit. Thereafter, an angle of arrival of the received signal is determined using measurements of the received signal from each of a plurality of antenna sectors of a multi-sector antenna. The angle of arrival is determined based upon stored antenna signal measurements of the multi-sector antenna, wherein a combination of different sector signal measurements corresponds to a single angle measurement. Using the determined distance and angle of arrival, a position or location of a wireless mobile unit can easily be determined using only measurements of the single base station.
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公开(公告)号：BR0003858A
公开(公告)日：2001-04-03
申请号：BR0003858
申请日：2000-08-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TEKIN IBRAHIM , CHEN BYRON HUA , CHIANG TUNG CHING , DA REN
Abstract: Disclosed is a method and apparatus for facilitating detection of satellite signals using a dynamic integration technique in which integration time periods of correlators are adjusted according to signal strength measurements of satellite signals received at GPS receivers. Specifically, integration time periods are inversely adjusted, either proportionally or non-proportionally, to received strengths of signals being searched.
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