公开(公告)号：FI965261A

公开(公告)日：1997-01-28

申请号：FI965261

申请日：1996-12-30

Applicant: MOTOROLA INC

Inventor： REED JOHN DOUGLAS ,  TANG YUQIANG

IPC: H04B7/04 ,  G01S3/00 ,  G01S5/00 ,  H01Q1/24 ,  H01Q21/29 ,  H04B7/26 ,  H04W16/18 ,  H04Q

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).

公开(公告)号：CA2194588A1

公开(公告)日：1996-11-28

申请号：CA2194588

申请日：1996-03-12

Applicant: MOTOROLA INC

Inventor： REED JOHN DOUGLAS

IPC: H04W16/06 ,  H04W16/24 ,  H04Q7/36

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.

公开(公告)号：FI964291A

公开(公告)日：1996-10-25

申请号：FI964291

申请日：1996-10-25

Applicant: MOTOROLA INC

Inventor： RUPPEL JOHN STEPHEN ,  REED JOHN DOUGLAS

IPC: H04W16/10 ,  H04W16/12 ,  H04W36/00 ,  H04Q ,  H04B

公开(公告)号：FI117530B

公开(公告)日：2006-11-15

申请号：FI965259

申请日：1996-12-30

Applicant: MOTOROLA INC

Inventor： REED JOHN DOUGLAS ,  O'NEILL FRANK P ,  THE BENJAMIN T

IPC: H04B7/08 ,  H04B7/02 ,  H04B17/00

Abstract: A method and apparatus for measuring a characteristic of a fading signal received using a two or more branch diversity receiver is presented. This fading characteristic is generally proportional to the speed of the user. In a first embodiment the number of times the antenna branches change in a selection diversity process is counted, and the result is scaled for imbalance between the branches. The output of a fading quality estimator, indicative of the fading and generally proportional to the speed, is thereby obtained.

公开(公告)号：AU2002346523A1

公开(公告)日：2003-06-23

申请号：AU2002346523

申请日：2002-11-25

Applicant: MOTOROLA INC

Inventor： REED JOHN DOUGLAS ,  SMITH JACK ANTHONY

IPC: H04L12/28 ,  H04L12/56

Abstract: A method of and wireless communications unit (WCU) for providing service in a mesh network includes a receiver for receiving a first signal from a first WCU in the mesh network; a directional antenna system for coupling the signal to the receiver, the signal arriving from a first selected one of a first plurality of directions; a controller to control the directional antenna system such that the signal is coupled to the receiver according too a local predetermined pattern of the first plurality of directions; and a transmitter to send a second signal in a second selected one of the first plurality of directions, where the controller interrupts the local predetermined pattern and selects the second direction.

公开(公告)号：GB2376850A

公开(公告)日：2002-12-24

申请号：GB0211463

申请日：2000-12-06

Applicant: MOTOROLA INC

Inventor： BORGSTAHL RONALD WILLIAM ,  HARRIS JEFFREY MARTIN ,  WOODWARD ERNEST EARL ,  AUSTIN WILLIAM BRYAN ,  MUNCASTER GEORGE WILLIAM ,  MOORE MORRIS ANTHONY ,  REED JOHN DOUGLAS ,  SCHORMAN ERIC REED

IPC: H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04B7/24 ,  H04J3/00

Abstract: A peer device (132) is arranged and programmed for maintaining a virtual queue for an event, and a personal presence identifier (122) is carried by a user and coupled to the peer device by a short-range two-way wireless link. The peer device and the personal presence identifier are arranged and programmed to establish (58) a two-way personal area network with one another when the personal presence identifier is within wireless transmission range of the peer device. The personal presence identifier and the peer device are also arranged and programmed to exchange (82) needs specifications and capability specifications with one another after establishing the two-way personal area network.

公开(公告)号：SE0201040D0

公开(公告)日：2002-04-05

申请号：SE0201040

申请日：2002-04-05

Applicant: MOTOROLA INC

Inventor： SMITH JACK ANTHONY ,  REED JOHN DOUGLAS

IPC: G01S5/00 ,  G01S5/02 ,  G01S19/05 ,  G01S19/48 ,  H04Q7/34 ,  G01S

Abstract: A method and apparatus for assigning location estimates from a first transceiver of a plurality of wireless transceivers to a second transceiver is disclosed. The present invention makes use of a low power short-range auxiliary communication link incorporated within networked devices to interact with nearby devices for obtaining location estimates of the current location of a device. Confidence levels are then assigned to the information obtained from the interactions with the nearby devices, and a determination of whether to update the location estimate is made.

公开(公告)号：CA2228899C

公开(公告)日：2001-10-09

申请号：CA2228899

申请日：1997-03-10

Applicant: MOTOROLA INC

Inventor： ROZANSKI WALTER JOSEPH JR ,  REED JOHN DOUGLAS

IPC: H04B15/00 ,  H04W64/00 ,  H04Q7/22

Abstract: A wireless communication system (200) estimates (303) the location of a mobi le station (215) when a degradation in the mobile station's communication occur s due to interference, and stores (305) the location estimate in a database. T he database is used to determine the potential for the mobile station (215) within the wireless communication system to receive interference based on it s 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.

公开(公告)号：CA2320174A1

公开(公告)日：1999-09-02

申请号：CA2320174

申请日：1999-01-26

Applicant: MOTOROLA INC

Inventor： WANG SHU-SHAW PETER ,  REED JOHN DOUGLAS

IPC: G01S5/02 ,  G01S5/12 ,  G01S19/25 ,  H04W64/00 ,  H04Q7/20 ,  H04Q7/22 ,  H04Q7/32 ,  H04Q7/34

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.

公开(公告)号：CA2228899A1

公开(公告)日：1997-12-18

申请号：CA2228899

申请日：1997-03-10

Applicant: MOTOROLA INC

Inventor： ROZANSKI WALTER JOSEPH JR ,  REED JOHN DOUGLAS

IPC: H04B15/00 ,  H04W64/00 ,  H04Q7/22

Abstract: A wireless communication system (200) estimates (303) the location of a mobi le station (215) when a degradation in the mobile station's communication occur s due to interference, and stores (305) the location estimate in a database. T he database is used to determine the potential for the mobile station (215) within the wireless communication system to receive interference based on it s 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.