Title:
WIRELESS RELAY SYSTEM
Document Type and Number:
Japanese Patent JP2003235067
Kind Code:
A
Abstract:
To solve a problem of a conventional wireless relay system that cannot discriminate when a speech channel is acquired or the like because only a voice speech is made between an MCA wireless apparatus A and a specific low-power portable radio and the specific low-power portable radio cannot recognize the channel state of the MCA wireless apparatus.
In order to attain the purpose above, an MCA wireless apparatus B informs the specific low-power portable radio about the state of the channel of the MCA wireless apparatus B via a wireless coupled repeater by means of a notice tone.
Inventors:
OKUMURA KAZUO
Application Number:
JP2002033611A
Publication Date:
August 22, 2003
Filing Date:
February 12, 2002
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC
International Classes:
H04W84/10; H04W88/04; (IPC1-7): H04Q7/28; H04Q7/26