Radio environment measuring system

U.S. Patent Number: 5381444

Abstract: A radio environment measuring system for measuring a propagation state of radio waves includes: a fixed radio apparatus provided in a base station; a mobile radio apparatus operatively connected to the fixed radio apparatus through the radio waves; the mobile radio apparatus having a repeater unit for receiving a transmission signal from the fixed radio apparatus and sending a returned signal to the fixed radio apparatus; and the fixed radio apparatus having a transmission/reception unit for sending the transmission signal to the mobile radio apparatus and receiving the returned signal from the mobile radio apparatus, and a measuring unit for measuring the propagation state of the radio waves, for example, a propagation distance, direction and reception intensity of the radio waves between the fixed radio apparatus and the mobile radio apparatus based on the transmission signal and the returned signal.

Inventors: Tajima; Masami (Kawasaki, JP)

Assignee: Fujitsu Limited (Kawasaki, JP)

Application Number: 07/969,460

Issued: 1995-01-10

Expired: 2007-01-10

Classes: 375/141 ; 342/118; 342/125; 380/34; 455/67.16

Field of search: 455/52.3,54.1,54.2,56.1,65,67.1,67.3,67.4,67.6,33.1,53.1 375/1,11-14 380/38,34 342/118,125 379/58,59

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