Method for automatic re-transmission of voice messages by a mobi

Details Method for automatic re-transmission of voice messages by a mobi Method for automatic re-transmission of voice messages by a mobi

1995-10-05

1998-06-16

Urban, Edward F.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

455 15, 370315, H04B 715

Patent

active

057686831

ABSTRACT:
A digital voice message, including a continuously embedded portable identification code, is transmitted by a portable communication unit (105) to a mobile communication unit (104) and to broadcast units (101-103). Based on the portable identification code, the mobile communication unit determines that it is associated with the portable communication unit. If, after a first predetermined period of time has elapsed, the mobile communication unit determines that the digital voice message is not being re-transmitted, in real time, by a broadcast unit (101), mobile repeater is enabled by the mobile communication unit and the digital voice message is re-transmitted as a mobile repeated message, thereby effectively extending the transmitting range of the portable communication unit.

REFERENCES:
patent: 4882765 (1989-11-01), Maxwell et al.
patent: 5056152 (1991-10-01), Truby et al.
patent: 5109526 (1992-04-01), Reed
patent: 5163158 (1992-11-01), Tendler et al.

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