(19)

(11)

EP 0 504 148 A1

(12)

(43) Date of publication: 23.09.1992 Bulletin 1992/39 (21) Application number: 90915608.0 (22) Date of filing: 17.09.1990

(51) International Patent Classification (IPC):  H04B 7/ 15( . ) H04Q 7/ 36( . ) H04W 84/ 08( . ) H04W 24/ 00( . ) H04B 7/ 24( . ) H04W 72/ 08( . ) H04W 16/ 14( . ) H04W 74/ 00( . ) (86) International application number: PCT/US1990/005194 (87) International publication number: WO 1991/006156 (02.05.1991 Gazette 1991/10)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 20.10.1989 US 19890424425 (71) Applicant: MOTOROLA, INC. Schaumburg, IL 60196 (US)	(72) Inventor: SHANLEY, Charles, W. Plantation, FL 33313 (US) (74) Representative: Hudson, Peter David  MOTOROLA European Intellectual Property Operations Jays Close Viables Industrial Estate Basingstoke Hants RG22 4PD Basingstoke Hants RG22 4PD (GB)