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:
Aug. 31, 1999
Filed:
Dec. 23, 1997
Applicant:
Inventor:
Mikko Korpela, Raahe, FI;
Assignee:
Nokia Mobile Phones Limited, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
455552 ; 455553 ; 370466 ; 370467 ; 370469 ;
Abstract
A mobile terminal (10) has multiple alternative protocol stacks (151, 152 . . .) which correspond to the protocols used on multiple backbone networks (30a-30c) to which the mobile terminal can obtain access through one or more radio access networks (20a-20c) with which it is in communication using a common, predetermined low level signalling protocol. The radio access network (20) broadcasts signals (102) indicating the types of backbone network to which it is connected (and thereby the protocols they employ), and on encountering a signal indicating a new type of backbone network, a mobile terminal 10 may download a new protocol stack from the radio access network.