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公开(公告)号：FI965260A
公开(公告)日：1997-01-24
申请号：FI965260
申请日：1996-12-30
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS
Abstract: A method for assigning subscribers between narrowbeam sectors includes, in a first embodiment, off-loading subscribers to alternate sectors when a current sector becomes loaded beyond a loading threshold. The subscriber(s) having the greatest signal quality measure (e.g., power setting) are preferably selected for off-loading, since such are typically in regions having the greatest overlap with other sectors (e.g., close to the antennas). The selected subscriber(s) are transferred to an alternate sector, preferably one having the best received signal quality with the subscriber and also having loading beneath the loading threshold.
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公开(公告)号：FI965257A
公开(公告)日：1996-12-31
申请号：FI965257
申请日：1996-12-30
Applicant: MOTOROLA INC
Inventor： GHOSH AMITAVA , REED JOHN DOUGLAS , ROZANSKI JR WALTER JOSEPH , BUFORD KEVIN ANDREW
Abstract: A method and apparatus for determining the location of a communication unit in a CDMA system includes in a first embodiment, sending a location request via a spread spectrum signal to the subscriber (140), and receiving in return a subscriber signal including a response message showing a receive time of a particular symbol of the base's spreading sequence and a transmit time of a particular symbol of the subscriber's spreading sequence. The base (130), along with other receiving base(s) (140), also receives a predetermined symbol of the subscriber spreading sequence, and each determines a respective receive time of the predetermined symbol. The received information is then processed, along with known base location and delay information, to determine the subscriber location. If insufficient number of bases are capable of communicating with the subscriber, for example due to high loading/interference, auxiliary bases (121) are also provided for receiving from or transmitting to the subscriber.
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公开(公告)号：AU5305396A
公开(公告)日：1996-12-11
申请号：AU5305396
申请日：1996-03-12
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS
Abstract: A method for assigning subscribers between narrowbeam sectors includes, in a first embodiment, off-loading subscribers to alternate sectors when a current sector becomes loaded beyond a loading threshold. The subscriber(s) having the greatest signal quality measure (e.g., power setting) are preferably selected for off-loading, since such are typically in regions having the greatest overlap with other sectors (e.g., close to the antennas). The selected subscriber(s) are transferred to an alternate sector, preferably one having the best received signal quality with the subscriber and also having loading beneath the loading threshold.
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公开(公告)号：FI964798A0
公开(公告)日：1996-11-29
申请号：FI964798
申请日：1996-11-29
Applicant: MOTOROLA INC
Inventor： TANG YUQIANG , REED JOHN DOUGLAS
Abstract: A method for wireless communication system planning includes, in a first embodiment, determining an image tree (500), based on a transmitter location (401) and the reflective (415) and diffractive (425) surfaces within a coverage region, and limiting the image tree to exclude branching for higher order images requiring more than a predetermined number of reflections and/or diffractions, or potential child images corresponding to surfaces not within the scope of the parent image (530, 560). Based on the image tree and propagation path back-tracing (620) a received signal quality measure (e.g., power) is determined for each receive location. By comparing the different received signal powers an optimal receiver unit location is determined. Further, by building further image trees for further transmitter locations, an overall coverage quality can be determined for each transmitter and compared to yield an optimal transmitter location.
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公开(公告)号：CA2190140A1
公开(公告)日：1996-10-03
申请号：CA2190140
申请日：1996-01-29
Applicant: MOTOROLA INC
Inventor： TANG YUGIANG , REED JOHN DOUGLAS
Abstract: A method for wireless communication system planning includes, in a first embodiment, determining an image tree (500), based on a transmitter location (401) and the reflective (415) and diffractive (425) surfaces within a coverage region, and limiting the image tree to exclude branching for higher order images requiring more than a predetermined number of reflections and/or diffractions, or potential child images corresponding to surfaces not within the scope of the parent image (530, 560). Based on the image tree and propagation path back-tracing (620) a received signal quality measure (e.g., power) is determined for each receive location. By comparing the different received signal powers an optimal receiver unit location is determined. Further, by building further image trees for further transmitter locations, an overall coverage quality can be determined for each transmitter and compared to yield an optimal transmitter location.
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Patent Agency Ranking26.发明公开
公开(公告)号：EP0843919A4
公开(公告)日：2003-03-19
申请号：EP97908986
申请日：1997-03-10
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS , ROZANSKI WALTER JOSEPH JR
CPC classification number: H04W64/00
Abstract: A wireless communication system (200) estimates (303) the location of a mobile station (215) when a degradation in the mobile station's communication occurs due to interference, and stores (305) the location estimate in a database. The database is used to determine the potential for the mobile station (215) within the wireless communication system to receive interference based on its estimated location or its proximity to the known interference location. When the mobile station (215) is within a predetermined distance of the known interference location, the likelihood for the mobile station (215) to experience a degradation in call quality, duration, etc. increases. To migitate the degradation due to interference, an alternate carrier (104) is found and if available, the mobile station's communication is handed off to the alternate carrier (104). Attenuation can also be added in the front-end of the mobile station (215) to mitigate the degradation due to interference.
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公开(公告)号：EP0772948A4
公开(公告)日：1998-11-25
申请号：EP96909623
申请日：1996-03-12
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS
Abstract: A method for assigning subscribers between narrowbeam sectors (201-208) includes, in a first embodiment, off-loading subscribers to alternate sectors when a current sector becomes loaded beyond a loading threshold. The subscriber(s) having the greatest signal quality measure (e.g. power setting) are preferably selected for off-loading, since such are typically in regions having the greatest overlap with other sectors (e.g. close to the antennas). The selected subscriber(s) are transferred to an alternate sector, preferably one having the best received signal quality with the subscriber and also having loading beneath the loading threshold.
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公开(公告)号：FI115817B
公开(公告)日：2005-07-15
申请号：FI964291
申请日：1996-10-25
Applicant: MOTOROLA INC
Inventor： RUPPEL JOHN STEPHEN , REED JOHN DOUGLAS
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29.发明专利
公开(公告)号：CA2320174C
公开(公告)日：2005-04-26
申请号：CA2320174
申请日：1999-01-26
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS , WANG SHU-SHAW PETER
Abstract: At a receiver location in a wireless communication system service area (22), a set of characteristics that describe a received ray of a subscriber signal is measured (26). In a model of the wireless communication system service area, a propagation path of a model ray launched from a location in the model of the wireless communication system service area that corresponds to the receiver location in the wireless communication system service area is determined (34), wherein the ray has model signal characteristics based upon the set of characteristics that describe the received ray of the subscriber signal. Thereafter, a subscriber location in the wireless communication system service area is estimated in response to the propagation path of the model ray.
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公开(公告)号：FI114671B
公开(公告)日：2004-11-30
申请号：FI964798
申请日：1996-11-29
Applicant: MOTOROLA INC
Inventor： TANG YUQIANG , REED JOHN DOUGLAS
Abstract: A method for wireless communication system planning includes, in a first embodiment, determining an image tree (500), based on a transmitter location (401) and the reflective (415) and diffractive (425) surfaces within a coverage region, and limiting the image tree to exclude branching for higher order images requiring more than a predetermined number of reflections and/or diffractions, or potential child images corresponding to surfaces not within the scope of the parent image (530, 560). Based on the image tree and propagation path back-tracing (620) a received signal quality measure (e.g., power) is determined for each receive location. By comparing the different received signal powers an optimal receiver unit location is determined. Further, by building further image trees for further transmitter locations, an overall coverage quality can be determined for each transmitter and compared to yield an optimal transmitter location.
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