The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1995
Filed:
Aug. 06, 1993
Eric M Pequet, Nalinnes, BE;
Serge C Raes, Lodelinsart, BE;
Alcatel N.V., Amsterdam, NL;
Abstract
The present mobile communication system includes a base station (BAS) and at least one mobile subscriber station (MOB) having a modulator (COM, SPM, DPEM, QPSKM, KSM) able to modulate a carrier wave with a request for access signal, and a transmitter (A3, DCM, ANTM) to transmit the thus obtained modulated carrier wave to the base station (BAS) during a time slot of a time division multiple access structure (TDS). The modulator is a linear digital modulator (COM, SPM, DPEM, QPSKM, KSM) which, prior to modulating the carrier wave with the request for access signal, modulates a pre-access carrier wave in such a way that a substantially constant envelope output signal is obtained during a subslot (SS1/SS6) of a time slot (SI). In a further embodiment the mobile subscriber stations are arranged in groups, to which distinct groups of time slots of said time division multiple access structure (TDS) are assigned, and each of the mobile subscriber stations (MOB) is allowed to launch a request for access in a time slot of the assigned group only.