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:
Sep. 12, 2006
Filed:
Oct. 03, 2002
Stefan Toth, Gothenburg, SE;
Niklas Sven Lundin, Gothenburg, SE;
Thomas R. Goransson, Molndal, SE;
Tormod Hegdahl, Oslo, NO;
Thorsten Lohmar, Aachen, DE;
Frank Hundscheidt, Kerkrade, NL;
Stefan Toth, Gothenburg, SE;
Niklas Sven Lundin, Gothenburg, SE;
Thomas R. Goransson, Molndal, SE;
Tormod Hegdahl, Oslo, NO;
Thorsten Lohmar, Aachen, DE;
Frank Hundscheidt, Kerkrade, NL;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A packet radio data network includes a gateway node (GGSN), at least one serving node (SGSN) coupled to the gateway node, a plurality of radio access nodes (RAN) coupled to the serving node (SGSN), the packet radio network transporting packet data from an external packet data network. The external packet data network includes, an Internet Service Provider (ISP), to mobile stations (MS) wirelessly attached to radio access nodes (RAN). A mobile station (MS) issues a membership report message requesting content of a specific multicast group, whereupon the gateway node (GGSN) issues a multicast context activation message to the serving node (SGSN). The serving node (SGSN) informs the radio access network (RAN) that the mobile station is joining the respective multicast group and sends a multicast activation response to the gateway node (GGSN).