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:
May. 08, 2001
Filed:
Aug. 18, 1997
Kimmo Kinnunen, Jyväskylä, FI;
Osmo Schroderus, Sumiainen, FI;
Nokia Telecommunications OY, Espoo, FI;
Abstract
A method of picking up mobile stations (DMRU,to DMRU,) onto a direct mode channel (f,) in a radio system that comprises a first (f,) and a second (f,) direct mode channel, a repeater (R,) to which the first direct mode channel (f,) is allocated, and mobile stations (DMRU,to DMRU,). In the method, the repeater (R,) tunes to and listens to the second direct mode channel (f,) and determines the moment when it can transmit on the second direct mode channel; the repeater (R,) transmits one or more pick-up messages on the second direct mode channel; the mobile stations (DMRU,, DMRU,, DMRU,) that communicate on the second direct mode channel (f,) receive the pick-up messages; and the desired mobile stations that communicate on the second direct mode channel (f,) switch, in response to the pick-up messages, to the first direct mode channel (f,) for communication.