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:
Aug. 05, 2008
Filed:
Dec. 29, 2004
Robert D. Logalbo, Rolling Meadows, IL (US);
Randy L. Ekl, Lake Zurich, IL (US);
Ron Rotstein, Arlington Heights, IL (US);
Christopher G. Ware, Chicago, IL (US);
Robert D. LoGalbo, Rolling Meadows, IL (US);
Randy L. Ekl, Lake Zurich, IL (US);
Ron Rotstein, Arlington Heights, IL (US);
Christopher G. Ware, Chicago, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Methods for delivery of multicast packets in a wireless communication system are disclosed. The methods comprise transmitting a contention free period initiation signal from an access point to the station, transmitting broadcast packets from the access point to the station, transmitting multicast packets from the access point to the station and holding the multicast packets in storage after the transmission, transmitting a contention free period end signal from the access point to the station, determining if a negative acknowledgement message has been received, retransmitting the multicast packets in response to receiving a negative acknowledgment message, and eliminating the multicast packets at a next beacon interval.