Mobile communication without call interruption during transition

Details Mobile communication without call interruption during transition Mobile communication without call interruption during transition

1997-01-16

1999-07-27

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455561, 455562, 455 20, H04B 100

Patent

active

059307269

ABSTRACT:
A mobile communication system having a base station and a mobile station, provided with indoor and outdoor antennas in different locations of a building structure that substantially prevents penetration of electromagnetic radiation. A communication unit is connected between the indoor and outdoor antennas. The communication unit is arranged to detect a signal received at the indoor antenna from the mobile station while the mobile station is communicating with the base station, determines that the mobile station is entering the structure when the detected signal exceeds a predetermined reference level and establishes a radio link between the outdoor antenna and the base station and a circuit between the indoor and outdoor antennas and commands the mobile station to establish a radio link to the indoor antenna. The radio link established between the mobile station and the indoor antenna uses forward and reverse channels that avoid interference with other mobile stations.

REFERENCES:
patent: 5142691 (1992-08-01), Freeburg
patent: 5189432 (1993-02-01), Lombardi et al.
patent: 5235632 (1993-08-01), Raith
patent: 5349631 (1994-09-01), Lee
patent: 5404570 (1995-04-01), Charas et al.
patent: 5533027 (1996-07-01), Akerburg et al.
patent: 5604789 (1997-02-01), Lerman
patent: 5754943 (1998-05-01), Arai et al.

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