(19)

(11)

EP 1 275 264 A1

(12)

(43) Date of publication: 15.01.2003 Bulletin 2003/03 (21) Application number: 01921396.6 (22) Date of filing: 20.03.2001

(51) International Patent Classification (IPC)7: H04Q 7/38 (86) International application number: PCT/FI0100/275 (87) International publication number: WO 0107/2076 (27.09.2001 Gazette 2001/39)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 21.03.2000 FI 20000662 (71) Applicant: Nokia Corporation 02150 Espoo (FI)	(72) Inventors: XU, Lin FIN-33880 Lempaala (FI) PAILA, Toni FIN-10160 Degerby (FI) (74) Representative: Virkkala, Jukka Antero  Kolster Oy Ab,Iso Roobertinkatu 23,P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)