Title of Invention	APPARATUS AND METHOD OF CIPHERING IN WIRELESS TELECOMMUNICATIONS USER EQUIPMENT OPERATIVE WITH A PLURALITY OF RADIO ACCESS NETWORKS
Abstract	A method in a wireless telecommunications device operative with a plurality of radio access networks, the method comprising: when operating with a first radio access network (e.g. GSM) reading at least one ciphering variable applicable in the second radio access network (e.g. in UMTS reading the value of a variable START from the USIM of the device). When the at least one ciphering variable applicable in the second radio access network renders ciphering in the second radio access network infeasible without further authentication (e.g. in UMTS when the value of START in USIM is equal to a value THRESHOLD), using a substitute value for the ciphering parameter (e.g. START) when establishing a connection with the second radio access network.

Title of Invention

APPARATUS AND METHOD OF CIPHERING IN WIRELESS TELECOMMUNICATIONS USER EQUIPMENT OPERATIVE WITH A PLURALITY OF RADIO ACCESS NETWORKS

Abstract

A method in a wireless telecommunications device operative with a plurality of radio access networks, the method comprising: when operating with a first radio access network (e.g. GSM) reading at least one ciphering variable applicable in the second radio access network (e.g. in UMTS reading the value of a variable START from the USIM of the device). When the at least one ciphering variable applicable in the second radio access network renders ciphering in the second radio access network infeasible without further authentication (e.g. in UMTS when the value of START in USIM is equal to a value THRESHOLD), using a substitute value for the ciphering parameter (e.g. START) when establishing a connection with the second radio access network.

Full Text	attached

Documents:

http://ipindiaonline.gov.in/patentsearch/GrantedSearch/viewdoc.aspx?id=pC36XT/iXNbsQS/HniQl2A==&loc=egcICQiyoj82NGgGrC5ChA==

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Patent Number

277120

Indian Patent Application Number

1701/CHE/2009

PG Journal Number

47/2016

Publication Date

11-Nov-2016

Grant Date

10-Nov-2016

Date of Filing

17-Jul-2009

Name of Patentee

Research In Motion Limited.

Applicant Address

295 Phillip Street Waterloo ON N2L 3W8 Canada.

Inventors:

#	Inventor's Name	Inventor's Address
1	REDDY Giri Narayana	Albert House 92-93 Edward Street Birmingham West Midlands B1 2RA United Kingdom.
2	FARNSWORTH Andrew John	Albert House 92-93 Edward Street Birmingham West Midlands B1 2RA United Kingdom.

PCT International Classification Number

G02B 6/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	08161199.8	2008-07-25	EPO