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:
Jun. 24, 2014
Filed:
Jul. 10, 2009
Wai Chen, Parsippany, NJ (US);
Taek-jin Kwon, Morganville, NJ (US);
Ryokichi Onishi, Kanagawa, JP;
Rama Vuyyuru, Somerset, NJ (US);
Wai Chen, Parsippany, NJ (US);
Taek-Jin Kwon, Morganville, NJ (US);
Ryokichi Onishi, Kanagawa, JP;
Rama Vuyyuru, Somerset, NJ (US);
Telcordia Technologies, Inc., Piscataway, NJ (US);
Toyota Infotechnology Center U.S.A., Inc., Palo Alto, CA (US);
Abstract
A method for maintaining a local peer group (LPG) for supporting communications among vehicles. The LPG is formed from a plurality of vehicles. Each vehicle is equipped with a wireless communications device. One of the vehicles is selected as a group header node (GH). The method comprises receiving periodically a heartbeat packet from the GH, the heartbeat packet including a maximum hop count, and a heartbeat cycle, forwarding the heartbeat packet until the maximum hop count is reached after waiting for a first random relay delay, which is less than a maximum allowable adjustable value, replying to the heartbeat packet with a membership report packet, forwarding a membership report packet towards the GH, and adding a vehicle that submitted the membership report packet to a LPG membership as a member node of the LPG if the membership report packet is new or updating information for a member node.