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:
Oct. 07, 2008
Filed:
Jan. 16, 2003
Gábor Bajko, Budapest, HU;
Tao Haukka, Oulu, FI;
Gábor Bajko, Budapest, HU;
Tao Haukka, Oulu, FI;
Nokia Corporation, Espoo, FI;
Abstract
A method for selecting a time length of a security association (SA) between user equipment (UE) which transmits and receives communications and a control entity in a communication system in accordance with the invention, includes transmitting a registration message (SM) from the user equipment to the control entity (P-CSCF) requesting registration of the user equipment with the control entity; after transmission of the registration message, setting the time length of the security association between the user equipment and the control entity to be equal to a registration time length set between the user equipment and the control entity during which registration of the user equipment with the control entity is valid; and transmitting the set time length of the security association to the user equipment as part of an acknowledgment message (SMor SM) to the registration message to cause the security association to have a time equal to the registration timer length.