Title:
【発明の名称】無線波の経路減衰を決定する方法及び装置
Document Type and Number:
Japanese Patent JPH11510029
Kind Code:
A
Abstract:
PCT No. PCT/FI97/00294 Sec. 371 Date Jan. 20, 1998 Sec. 102(e) Date Jan. 20, 1998 PCT Filed May 20, 1997 PCT Pub. No. WO97/44977 PCT Pub. Date Nov. 27, 1997A method and apparatus for determining path attenuation of radio waves in a radio system, in which at least a two-dimensional vector map describing the environment of a base station is used for determining the coverage area of the base station of the system, and in which the strength of the emission of a transmitter is determined at various points in the environment. The invention is implemented by calculating from the base stations environment described by the vector map a polygon area to which radio waves can propagate both directly and by means of diffraction and reflections, by estimating the strength of the emission of the transmitter at each location point of the transmitter to be examined in the polygon area determined by calculation, and by determining points of the polygon area in advance, storing the determined points in a memory, and reading the stored points from the memory for calculating the polygon area for different location points of the transmitter.
More Like This:
Inventors:
Heis Kakari
Cangas alto
Cangas alto
Application Number:
JP54166397A
Publication Date:
August 31, 1999
Filing Date:
May 20, 1997
Export Citation:
Assignee:
Nokia Telecommunicacion Osaque Yukichia
International Classes:
H04W16/18; H04B7/26; (IPC1-7): H04Q7/36; H04B7/26
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)