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:
Jan. 22, 2008
Filed:
Oct. 18, 2002
Subramanian Ramanathan, Concord, MA (US);
Cesar A. Santivanez, Boston, MA (US);
Subramanian Ramanathan, Concord, MA (US);
Cesar A. Santivanez, Boston, MA (US);
BBN Technologies Corp., Cambridge, MA (US);
Abstract
A method () and system () provide directional medium access control for wireless nodes () in a wireless network (), each of the nodes () having a transceiver () and a plurality of antennas () in selective communication with the transceiver (). Packets () are transmitted from a transmitting node () of the nodes () when a channel () is sensed as being free in a beam direction of a selected one of the antennas (), and in accordance with a pre-determined transmission mode () for the data packet (). The transmitting node () is periodically placed in a forced idle state, thereby being prevented from transmitting data packets (), but being able to receive and respond to data packets () from other nodes ().