Method of establishing communication relay between mobile unit a

Details Method of establishing communication relay between mobile unit a Method of establishing communication relay between mobile unit a

1985-06-21

1987-06-30

Ng, Jin F.

Telecommunications

Carrier wave repeater or relay system

Monitoring

455 33, 455 54, H04B 1702

Patent

active

046776877

ABSTRACT:
In order to either permit communication to continue or to permit a call to be placed while a mobile unit is located in a zone of weak signal strength such as a tunnel or underground parking, a booster is disposed in the zone and arranged to establish communication with the mobile unit over a booster channel. When the mobile unit detects the signal strength being below a level at which communication is possible, the unit switches to the booster channel and establishes temporary communication with the booster. This enables the booster to be conditioned to establish a communication link between the land site and the mobile unit over a voice channel. The mobile unit is responsive to the conditioning of the booster to switch to the voice channel. Hence the need for wholesale relaying of all channels is obviated by the selective relaying which is possible via the provision of the booster channel.

REFERENCES:
patent: 3035169 (1962-05-01), Griffith
patent: 4144412 (1979-03-01), Ito et al.
patent: 4481670 (1984-11-01), Freeburg

Affiliated with

Also associated with

Rating

Method of establishing communication relay between mobile unit a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of establishing communication relay between mobile unit a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of establishing communication relay between mobile unit a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-452459