EP 0963628 A1 19991215 - METHOD AND APPARATUS FOR DETERMINING RADIO WAVE PROPAGATION ATTENUATION
Title (en)
METHOD AND APPARATUS FOR DETERMINING RADIO WAVE PROPAGATION ATTENUATION
Title (de)
VERFAHREN UND GERÄT ZUR FESTSTELLUNG DER DÄMPFUNG DER PROPAGATION DER FUNKWELLEN
Title (fr)
PROCEDE ET APPAREIL PERMETTANT DE DETERMINER L'ATTENUATION DE LA PROPAGATION DES ONDES RADIOS
Publication
Application
Priority
- FI 9800155 W 19980220
- FI 970812 A 19970226
Abstract (en)
[origin: WO9838756A1] The invention relates to a method and an apparatus for determining radio wave propagation attenuation in the desired area in a radio system. An at least multi-dimensional vector map delineating the environment of a base station is used in determining the coverage area of the system base station. Propagation attenuation at some points of the desired area is determined by a ray tracing method. At other points of the desired area, the propagation attenuation is calculated by an empirical model, the parameters of said model being initialized by the results obtained by the ray tracing method. By the method, propagation attenuation can be calculated much more rapidly than before.
IPC 1-7
IPC 8 full level
H04B 7/26 (2006.01); H04B 17/00 (2006.01); H04W 16/18 (2009.01); H04W 16/20 (2009.01)
CPC (source: EP)
H04B 17/391 (2015.01); H04W 16/18 (2013.01); H04W 16/20 (2013.01)
Citation (search report)
See references of WO 9838756A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9838756 A1 19980903; AU 6217198 A 19980918; AU 732097 B2 20010412; CN 1249088 A 20000329; EP 0963628 A1 19991215; FI 970812 A0 19970226; FI 970812 A 19980827; JP 2001513287 A 20010828; NO 994102 D0 19990825; NO 994102 L 19990825
DOCDB simple family (application)
FI 9800155 W 19980220; AU 6217198 A 19980220; CN 98802890 A 19980220; EP 98904200 A 19980220; FI 970812 A 19970226; JP 53733998 A 19980220; NO 994102 A 19990825