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:
Jul. 14, 2009
Filed:
Apr. 05, 2007
William Michael Rudnick, Pittsford, NY (US);
William Michael Rudnick, Pittsford, NY (US);
Harris Corporation, Melbourne, FL (US);
Abstract
A method of operating an ad-hoc network having a plurality of wireless nodes includes operating the wireless nodes using a routing protocol, such as OLSR, so that the wireless nodes store forward multi-point relay (MPR) spanning tree routes and reverse MPR spanning tree routes. A first wireless node communicates with a second wireless node using a reverse MPR spanning tree route. The method further includes determining whether the reverse MPR spanning tree route has become unavailable between the first and second wireless nodes and that no other reverse MPR spanning tree route has yet become available, and, if so, using at least portions of a forward MPR spanning tree route for communication between the first and second wireless nodes. The symmetric OLSR approach may be effective in avoiding unnecessary route drops caused by the interaction between distribution-of-topology-change-information conditions and exclusively routing via the destination node's reverse-MPR-spanning tree.