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1.发明公开METHOD FOR WIRELESS COMMUNICATION SYSTEM PLANNING 失效VERFAHREN ZUR PLANUNG EINES FUNKKOMMUNIKATIONSSYSTEMS
公开(公告)号：EP0772893A4
公开(公告)日：1998-06-10
申请号：EP96913788
申请日：1996-04-12
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS , TANG YUQIANG
IPC: H04B7/04 , G01S3/00 , G01S5/00 , H01Q1/24 , H01Q21/29 , H04B7/26 , H04W16/18 , H01Q3/00 , G01S1/00
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 transmit location. By comparing the different received signal powers, an optimal receiver unit location is determined. Further, by back-tracing for further antenna locations/combinations, and comparing for diversity effects (864, 865), overall coverage qualities can be determined for each antenna combination and compared to yield optimal base diversity antenna locations (867).
Abstract translation: 一种用于无线通信系统规划的方法包括在第一实施例中，基于覆盖区域内的发射机位置（401）和反射（415）和衍射（425）表面来确定图像树（500），并且限制 图像树以排除需要多于预定数量的反射和/或衍射的较高阶图像的分支，或对应于不在父图像（530,560）的范围内的表面的潜在的子图像。 基于图像树和传播路径回溯（620），为每个发送位置确定接收信号质量测量（例如功率）。 通过比较不同的接收信号功率，确定最佳接收机单元位置。 此外，通过用于进一步的天线位置/组合的反向跟踪以及对于分集效应进行比较（864,865），可以为每个天线组合确定总体覆盖质量，并进行比较以产生最佳的基站分集天线位置（867）。
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公开(公告)号：FI115886B
公开(公告)日：2005-07-29
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：AU2002359482A1
公开(公告)日：2003-06-23
申请号：AU2002359482
申请日：2002-11-25
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS , SMITH JACK ANTHONY
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公开(公告)号：CA2386681A1
公开(公告)日：2001-04-19
申请号：CA2386681
申请日：2000-09-26
Applicant: MOTOROLA INC
Inventor： SMITH JACK ANTHONY , REED JOHN DOUGLAS
Abstract: A method and apparatus for transferring location estimates from a first transceiver (122) of a plurality of wireless transceivers (122) to a second transceiver (132) is disclosed. The present invention makes use of a low pow er short-range auxiliary communication link incorporated within networked devic es to interact with nearby devices for obtaining location estimates of the current location of a device. Confidence estimates (504) are then assigned t o the information obtained from the interactions with the nearby devices, and a determination (508) of whether to update the location estimate is made.
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公开(公告)号：AU4839200A
公开(公告)日：2001-01-31
申请号：AU4839200
申请日：2000-05-11
Applicant: MOTOROLA INC
Inventor： GOLDBERG STEVEN JEFFREY , SOUISSI SLIM , HILL THOMAS CASEY , REED JOHN DOUGLAS , KOTZIN MICHAEL DALE
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Patent Agency Ranking
公开(公告)号：CA2302502A1
公开(公告)日：1999-03-18
申请号：CA2302502
申请日：1998-09-02
Applicant: MOTOROLA INC
Inventor： WANG SHU-SHAW PETER , REED JOHN DOUGLAS
Abstract: In a model of a wireless communication system service area (160), a set of characteristics associated with the reception of a model signal (210) are calculated (308), preferably using ray-tracing techniques, wherein the model signal (172) is transmitted from a selected location (162) to a receiver location (166). Next, a set of characteristics that describe a received signal at a receiver location in the wireless communication system service area are measured (316), wherein the receiver location corresponds to the receiver location in the model (160). Thereafter, a relationship between the calculated set of characteristics and the measured set of characteristics is determined (318), and the location of the subscriber unit that transmitted the received signal is estimated (320) in response to the relationship between the calculated set of characteristics and the measured set of characteristics.
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公开(公告)号：BR9702317A
公开(公告)日：1999-03-09
申请号：BR9702317
申请日：1997-03-10
Applicant: MOTOROLA INC
Inventor： ROZANSKI WALTER JOSEPH JR , REED JOHN DOUGLAS
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 mitigate 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：AU679877B2
公开(公告)日：1997-07-10
申请号：AU5663596
申请日：1996-04-12
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS , TANG YUQIANG
IPC: H04B7/04 , G01S3/00 , G01S5/00 , H01Q1/24 , H01Q21/29 , H04B7/26 , H04W16/18 , H01Q3/00 , G01S1/00
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 transmit location. By comparing the different received signal powers an optimal receiver unit location is determined. Further, by back-tracing for further antenna locations/combinations, and comparing for diversity effects (864, 865), overall coverage qualities can be determined for each antenna combination and compared to yield optimal base diversity antenna locations (867).
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公开(公告)号：FI965260A0
公开(公告)日：1996-12-30
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：CA2195216A1
公开(公告)日：1996-12-05
申请号：CA2195216
申请日：1996-04-12
Applicant: MOTOROLA INC
Inventor： REED JOHN DOUGLAS , TANG YUQIANG
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 transmit location. By comparing the different received signal powers, an optimal receiver unit location is determined. Further, by back-tracing for further antenna locations/combinations, and comparing for diversity effects (864, 865), overall coverage qualities can be determined for each antenna combination and compared to yield optimal base diversity antenna locations (867).
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