US Patent Issued to Motorola Solutions on Feb. 22 for "Method for Updating a Multicast State of a Multicast Group" (Illinois Inventors)

ALEXANDRIA, Va., Feb. 23 -- United States Patent no. 7,894,378, issued on Feb. 22, was assigned to Motorola Solutions Inc. (Schaumburg, Ill.).

"Method for Updating a Multicast State of a Multicast Group" was invented by Adam C. Lewis (Buffalo Grove, Ill.) and Surong Zeng (Schaumburg, Ill.).

According to the abstract released by the U.

S. Patent & Trademark Office: "A method and system for updating a multicast state of a multicast group at a first mesh access point as provided improves network efficiency. According to one aspect, the method includes processing a multicast member join request for the multicast group received from a first wireless node. A proxy update message for the first wireless node received from a third mesh access point is then processed. The first wireless node connects to a second mesh access point after joining the multicast group via the first mesh access point, and the third mesh access point is a root node of a mesh tree of which the second mesh access point is a node. An Internet Group Management Protocol (IGMP) query message for the multicast group is then generated. A multicast update (MUPD) packet is then transmitted to an upstream node, whereby a multicast state is updated at the upstream node."

The patent was filed on Aug. 16, 2007, under Application No. 11/839,735.

For further information please visit: http://patft.uspto.gov/netacgi/nph-Parser?

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