Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-12-11
1999-09-14
Eisenzopf, Reinhard J.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455524, 455 673, 455 676, 455446, H04B 1702
Patent
active
059536691
ABSTRACT:
The apparatus includes a memory for storing representations of a microcellular transmitter and a macrocellular transmitter. The representation of the microcellular transmitter is configured to transmit a representation of a first signal, the representation of the macrocellular transmitter is configured to transmit a representation of a second signal. A database is responsive to the memory. The database has a plurality of data structures, and the plurality of data structures comprise a map of a geographic area. A predetermined location is positioned on the map. A facet having a size and comprising at least three points defining a plane is associated with the predetermined location. First and second instruction sets are available to calculate a characteristic of the first and second signals. A processor responsive to the memory and the database uses one of the first instruction set and the second instruction set to calculate the characteristic at the predetermined location.
REFERENCES:
patent: 5301127 (1994-04-01), Hitney
patent: 5491644 (1996-02-01), Pickering et al.
patent: 5561841 (1996-10-01), Markus
patent: 5689812 (1997-11-01), Takahashi
Netplan.TM. RF System Planning and Management Tool brochure, published by Motorola, Inc., 1996.
"Integrated Macro and Microcellular Propagation Model, Based on the Use of Photogrammetric Terrain and Building Data," by E.K. Tameh et al., IEEE (1997), pp. 1957-1961.
"A Versatile Wave Propagation Model for the VHF/UHF Range Considering Three-Dimensional Terrain," by M. Lebherz et al., IEEE Transactions on Antennas and Propagation, vol. 40, No. 10, Oct. 1992, pp. 1121-1131.
"Two-Dimensional Ray-Tracing Modeling for Propagation Prediction in Microcellular Environments," K. Rizik et al., IEEE Transactions on Vehicular Technology, vol. 46, No. 2, May 1997, pp. 508-517.
"Simulation of Radio RayRelay Link Performance Using a Deterministic 3D Wave Propagation Model," by N. Geng et al., Radio Relay Systems, C11-14 Oct. 1993, Conference Publication No. 386, IEE, pp. 343-348.
Concepts and Results for 3D Digital Terrain-Based Wave Propagation Models: An Overview, T. Kurner et al., IEEE Journal on Selected Areas in Communications, vol. 11, No. 7, Sep. 1993.
"Finite-Difference Time-Domain Method for Electromagnetic Radiation, Interference, and Interaction with Complex Structures," P.A. Tirkas et al., IEEE Transactions on Electromagnetic Compatibility, vol. 35, No. 2, May 1993.
"A Microcellular Communications Propagation Model Based on the Uniform Theory of Diffraction and Multiple Image Theory," S.Y. Tan et al., IEEE Transaction on Antennas and Propagation, vol. 44, No. 10, Oct. 1996.
"A Monte Carlo FDTD Technique for Rough Surface Scattering," J.B. Schneider et al., IEEE Transactions on Antennas and Propagation, vol. 43, No. 11, Nov. 1995.
Anantha Veeraraghavan A.
Mendoza Javier
Mendoza Julian
Stratis Glafkos
Creps Heather L.
Eisenzopf Reinhard J.
Kincaid Lester G.
Motorola Inc.
LandOfFree
Method and apparatus for predicting signal characteristics in a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for predicting signal characteristics in a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for predicting signal characteristics in a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1520179