Method of communication between a plurality of remote units and

Details Method of communication between a plurality of remote units and Method of communication between a plurality of remote units and

Filed on

1998-03-23

Date issued

2000-08-15

Examiner

Horabik, Michael

Patent Class

Communications: electrical

SubClass

Selective

SubSubClass

Interrogation response

Other Related Categories

370458, H04Q 522

Type

Patent

Status

active

Patent number

06104279&

Description

ABSTRACT:
In a communication system comprising a base station and a plurality of asynchronously operating remote units, a method of communication between the base station and each of the remote units includes each remote unit randomly transmitting a first bit pattern to the base unit. Upon detecting the reception of an error-free bit pattern, the base unit transmits an ACK during a first window of time. The remote unit which detects the ACK during a corresponding first window of time becomes the selected unit and thereafter communicates with the base station. All other remote units continue monitoring for the transmission of a command belonging to a first set of commands, afterwhich the selected unit goes into a quiet mode and the unselected units resume their random transmissions of the first bit pattern to the base unit.

REFERENCES:
patent: 5053774 (1991-10-01), Schuermann et al.
patent: 5294931 (1994-03-01), Meier
patent: 5365551 (1994-11-01), Snodgrass et al.
patent: 5434572 (1995-07-01), Smith
patent: 5457461 (1995-10-01), Schuermann
patent: 5489908 (1996-02-01), Orthmann et al.
patent: 5500650 (1996-03-01), Snodgrass et al.
patent: 5602538 (1997-02-01), Orthmann et al.
patent: 5771462 (1998-06-01), Olsen

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