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. 12, 2014
Filed:
Jul. 20, 2011
Kentarou Yanagihara, Hyogo, JP;
Hiroshi Nishimura, Osaka, JP;
Yuki Kubo, Osaka, JP;
Masanori Nozaki, Osaka, JP;
Kentarou Yanagihara, Hyogo, JP;
Hiroshi Nishimura, Osaka, JP;
Yuki Kubo, Osaka, JP;
Masanori Nozaki, Osaka, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A tree topology in a multi-hop wireless network is configured by having each node other than the root node select a parent node within direct communication range, thereby becoming a child node of the selected parent node. Neighboring nodes provide selection values such as routing costs and local structural information indicating the existing topology in their vicinities, including parent-child relationships. The selection of the parent node is based on the received selection values, but the local structural information is used to bias the selection in favor of neighboring nodes with at least one other child node. This selection strategy reduces the number of parent nodes in the network and enables more nodes to operate as end nodes, which can then conserve power by carrying out sleep control.