Radio propagation simulation method
First Claim
1. A radio propagation simulation method of obtaining received power of electric waves emitted from a transmitting point at a point in a three-dimensional space including electric wave reflection objects at a plurality of evaluation points on a plane in the space, comprising:
- a first step of obtaining at each of the plural evaluation points received power of electric waves received directly from the transmitting point or electric waves having penetrated through reflection objects; and
a second step of deciding for each of the reflection objects a particular area at which reflection waves arrive, obtaining for each of the evaluation points contained in the particular area received power of reflection waves or reflection waves having penetrated through reflection objects, and adding the received power to that obtained in the first step.
1 Assignment
0 Petitions
Accused Products
Abstract
For electric waves emitted from a base station, an arrival area of reflection waves thereof is determined according to a reflection object by which the electric waves are last reflected and a fictitious transmitting point decided for the reflection object. Received power of reflection waves is calculated for each evaluation point in the particular area. Since the calculation is conducted for the limited area, the period of time required for the calculation is remarkably minimized while retaining the precision of calculation when compared with the case in which the calculation is achieved for all related areas.
31 Citations
12 Claims
-
1. A radio propagation simulation method of obtaining received power of electric waves emitted from a transmitting point at a point in a three-dimensional space including electric wave reflection objects at a plurality of evaluation points on a plane in the space, comprising:
-
a first step of obtaining at each of the plural evaluation points received power of electric waves received directly from the transmitting point or electric waves having penetrated through reflection objects; and a second step of deciding for each of the reflection objects a particular area at which reflection waves arrive, obtaining for each of the evaluation points contained in the particular area received power of reflection waves or reflection waves having penetrated through reflection objects, and adding the received power to that obtained in the first step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A radio propagation simulation method of obtaining received power of electric waves emitted from a transmitting point at a point in a three-dimensional space including a plurality of electric wave reflection objects at a plurality of evaluation points on an evaluation plane in the three-dimensional space, comprising:
-
a first step of setting parameters of the transmitting point, reflection objects, and evaluation plane and initializing storage areas for keeping therein values of amplitude respectively at the evaluation points; a second step of calculating for the evaluation points values of amplitude thereat of electric waves directly from the transmitting point or electric waves having penetrated through at least one of the reflection objects, thereby keeping the values of amplitude respectively in the storage areas; a third step of deciding for each of the reflection objects a particular area at which reflection waves arrive, and obtaining for each of the evaluation points contained in at least one of the particular areas a value of amplitude thereat of reflection waves directly from the reflection object or reflection waves having penetrated through at least one of the other reflection objects, thereby adding the value of amplitude to a value of amplitude kept in the storage area associated therewith; and a fourth step of outputting distribution of received power on the evaluation plane according to the values of amplitude kept in the storage areas. - View Dependent Claims (11, 12)
-
Specification