Method and system for adaptive ray launching

Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C455S067110

Reexamination Certificate

active

07962102

ABSTRACT:
A system (170) and method (300) for ray launching is provided. The system can include a transmitter (110) for successively launching a plurality of rays, and a receiver (120) for receiving transmission rays and reflection rays. A controller (141) can be included for selectively adjusting an angular spacing and eliminating rays in successive launches to focus an energy on the receiver. A method (430) of terminating rays for reducing computational complexity is provided. A method (340) for ray weighting for increasing a computational speed of ray propagation is provided. In one aspect, a quality of service (108) can be determined at the receiver based on ray propagation.

REFERENCES:
patent: 5574466 (1996-11-01), Reed et al.
patent: 5828960 (1998-10-01), Tang et al.
patent: 5831874 (1998-11-01), Boone et al.
patent: 6161018 (2000-12-01), Reed et al.
patent: 6487417 (2002-11-01), Rossoni et al.
patent: 6751322 (2004-06-01), Carlbom et al.
patent: 2002/0094809 (2002-07-01), Watanabe et al.
patent: 2002/0107663 (2002-08-01), Furukawa et al.
patent: 2003/0220745 (2003-11-01), Campbell
patent: 2004/0259554 (2004-12-01), Rappaport et al.
patent: 2005/0068545 (2005-03-01), Niu et al.
patent: 2005/0088165 (2005-04-01), Watanabe et al.
patent: 2007/0093212 (2007-04-01), Sugahara
patent: 2009/0144037 (2009-06-01), Sibecas et al.
patent: 2009/0167756 (2009-07-01), Bijamov et al.
patent: 1020010011922 (2001-02-01), None
patent: 97/44977 (1997-11-01), None
Michael C. Lawton and J. P. McGeehan, The Application of a Deterministic Ray Launching Algorithm for the Prediction of Radio Channel Characteristics in Small-Cell Environments, IEEE Transactions on Vehicular Tech., Nov. 1994, pp. 955-969, vol. 43 No. 4.
Ulrich Dersch and Ernst Zollinger, Propagation Mechanisms in Microcell and Indoor Environments, IEEE Transactions on Vehicular Tech., Nov. 1994, pp. 1058-1066, vol. 43 No. 4.
Georgia E. Athanasiadou and Andrew R. Nix, A Novel 3-D Indoor Ray-Tracing Propagation Model: The Path Generator and Evaluation of Narrow-Band and Wide-Band Predictions, IEEE Transactions on Vehicular Tech., Jul. 2000, pp. 1152-1168, vol. 49 No. 4.
Zhijun Zhang et al., Ray Tracing Method for Propagation Models in Wireless Communication Systems, Electronics Letters, Mar. 2, 2000, pp. 464-465, vol. 36 No. 5.
Francisco Saez de Adana et al., Propagation Model Based on Ray Tracing for the Design of Personal Communication Systems in Indoor Environments, IEEE Transactions on Vehicular Tech., Nov. 2000, pp. 2105-2112, vol. 49 No. 6.
R. Hoppe et al., Wideband Propagation Modelling for Indoor Environments and for Radio Transmission into Buildings, The 11th IEEE Int'l Symp. on Personal, Indoor and Mobile Radio Communications (PIMRC), 2000, pp. 282-286, vol. 1.
V. Sampath et al., Comparison of Statistical and Deterministic Indoor Propagation Prediction Techniques with Field Measurements, IEEE 47th Vehicular Technology Conference, 1997, pp. 1138-1142, vol. 2.
William H. Press et al., Chapter 9: “Section 9.1 Bisection Method”, Numerical Recipes in C: The Art of Scientific Computing, 1992, pp. 347-393, 2nd Edition, Cambridge University Press.
Saic, Urbana 3-D Wireless Toolkit, http://www.saic.com/products/software/urbana/, downloaded Aug. 4, 2010, 2 pages.
Takeshi Manabe et al., Effects of Antenna Directivity and Polarization on Indoor Multipath Propagation Characteristics at 60 GHz, IEEE J. on Selected Areas in Comm., Apr. 1996, pp. 441-448, vol. 14 No. 3.
Patent Cooperation Treaty, “PCT Search Report and Written Opinion of the International Searching Authority” for International Application No. PCT/US2007/082183, Mar. 31, 2008, 12 pages.
Magdy Iskander and Zhengqing Yun, “Propagation Prediction Models for Wireless Communication Systems,” IEEE Transactions on Microwave Theory and Tech., Mar. 2002, pp. 662-672, vol. 50 No. 3.
Paul S. Heckbert and Pat Hanrahan, “Beam Tracing Polygonal Objects”, Proc. on SIGGRAPH, Jul. 1984, pp. 119-127, vol. 18 No. 3.
Patent Cooperation Treaty, “PCT Search Report and Written Opinion of the International Searching Authority” for International Application No. PCT/US2008/083297, Apr. 27, 2009, 11 pages.
U.S. Patent and Trademark Office, “Non-Final Rejection” for U.S. Appl. No. 11/948,636, Jun. 28, 2010, 15 pages.
Seong-Cheol Kim, et al., “Radio Propagation Measurements and Prediction Using Three-Dimensional Ray Tracing in Urban Environments at 908 MHz and 1.9 GHz”, IEEE Transactions on Vehicular Technology, May 1999, pp. 931-946, vol. 48 No. 3.
“Diffraction” From Wikipedia, the free encyclopedia, downloaded Aug. 2, 2010; http://en.wikipedia.org/wiki/Diffraction, 10 pages.
Bertoni, H.L. et al., “UHF Propagation Prediction for Wireless Personal Communications,” in Proc. IEEE, vol. 82, pp. 1333-1359, Sep. 1994.
Kurner, T. et al., “Concepts and Results for 3D Digital Terrain-Based Wave Propagation Models: An Overview,” IEEE J. Selected Areas Commun., vol. 11, pp. 1002-1012, Sep. 1993.
Lee et al., The Boost Graph Library: User Guide and Reference Manual, Addison-Wesley 2002; Section 21. Algorithms; Sub-Section 19. “astar—search”; 10 pages.
Li, M.M. et al., “A Three-Dimensional (3-D) Substrate-Guided-Wave to Free-Space Multistage Optoelectronic Interconnection Using Wavelength Division Multiplexing and Space Division Demultiplexing” IEEE Journal of Lightwave Technology, Mar. 1996.
Patent Cooperation Treaty, “PCT Search Report and Written Opinion of the International Searching Authority” for International Application No. PCT/US2008/086956 Dec. 16, 2008, 9 pages.
Liang, G. and Bertoni, H., “A New Approach to 3-D Ray Tracing for Propagation Prediction in Cities” IEEE Transactions on Antennas and Propagation, vol. 46, No. 6, pp. 853-863, Jun. 1998.
Escarieu, F. et al., “Outdoor and Indoor Channel Characterization by a 3D Simulation Software” IEEE International Symposium on Personal, Indoor and Mobile Communications (PIMRC) 2001, pp. 360-364, Sep. 2001.
Leubbers, Raymond J., “Propagation Prediction for Hilly Terrain Using GTD Wedge Diffraction” IEEE Transactions on Antennas and Propagation, vol. AP-32, No. 9, pp. 951-955, Sep. 1984.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and system for adaptive ray launching 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 system for adaptive ray launching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for adaptive ray launching will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2689185

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.