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. 10, 2006
Filed:
Jan. 28, 2002
Mario F. Derango, Wauconda, IL (US);
Michael F. Korus, Eden Prarie, MN (US);
Mario F. Derango, Wauconda, IL (US);
Michael F. Korus, Eden Prarie, MN (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Call control methods are disclosed for a multi-zone, packet-based communication system using zone controller/RPEs incorporating a reservation proxy function. Participating zone controller/RPEs () receive and join a multicast group address to be used for a call, and exchange RSVP signaling messages across one or more inter-zone, packet network links () to reserve communication resources for the call on behalf of participating devices in various zones. In the preferred embodiment, the zone controllers use IGMPv3 messages to specify other participating zone controllers as valid senders, thereby receiving desired control information for the duration of the call without being encumbered by undesired payload information.