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:
Nov. 24, 2009
Filed:
Oct. 09, 2001
Tuija Hurtta, Espoo, FI;
Tony Hulkkonen, Helsinki, FI;
Jaakko Rajaniemi, Helsinki, FI;
Mohan Sivanandan, Roswell, GA (US);
Markku Tuohino, Espoo, FI;
Tuija Hurtta, Espoo, FI;
Tony Hulkkonen, Helsinki, FI;
Jaakko Rajaniemi, Helsinki, FI;
Mohan Sivanandan, Roswell, GA (US);
Markku Tuohino, Espoo, FI;
Nokia Corporation, Espoo, FI;
Abstract
According to one aspect, a communication network system comprising at least one first network and at least one second network providing application services over the first network is described. The system comprises first network means (GGSN) for receiving a message associated with an IP address allocated by the first network from the second network, for detecting that there is no active communication channel for this IP address which is allocated to a user equipment, and for sending an indication that the user equipment is not reachable through this IP address to the second network. The system further comprises second network means (P-CSCF/PCF) for receiving this indication.