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:
Mar. 14, 2000
Filed:
Jul. 29, 1997
Harri Jokinen, Hiisi, FI;
Hannu Pirila, Raisio, FI;
Nokia Mobile Phones Limited, Espoo, FI;
Abstract
The object of the invention is a method to realize discontinuous transmission (DTX) in a telecommunications network, e.g. in a GSM (Global System for Mobile Communications) mobile phone network, particularly on the downlink. The disadvantage of known methods is that dummy bursts transmitted on the frequency of the broadcasting channel cause disturbing responses in a mobile phone, when frequency hopping is used. In the solution according to the invention the bursts transmitted on the frequency of the broadcasting channel are encoded so that after decoding the mobile phone prevents information contained in a dummy burst to be interpreted as speech. In this way the mobile phone responds with noise on the dummy bursts transmitted on the broadcasting frequency.