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. 20, 2013
Filed:
Dec. 13, 2007
Wim DE Kimpe, Zele, BE;
Stephan Noel, Ixelles, BE;
Bram Van Den Bosch, Berchem, BE;
Greenpeak Technologies, Antwerp, BE;
Abstract
A method of communication or transmission of data between a first and a second node in a wireless multi-hop network comprises bringing the first node and the second node in a fully operative mode for communication with each other and subsequently bringing the first node and the second node in a reduced operative mode where no communication with any other node is possible and, before bringing the second node in the fully operative mode, bringing the second node in a listening mode during a token listening period to check for presence of a wake-up token from the first node, and thereafter bringing the second node into the reduced operative mode if no wake-up token is received, and bringing the second node into the fully operative mode for reception of data from the first node if a wake-up token is received. This wake-up scheme is a kind of scheduled rendezvous scheme with collision avoidance, and may be called an induced wake-up scheme. It is advantageous because of its low power consumption (nodes only wake up completely when a message is present for them to receive) and because of the low latency in data transfer. The wake-up tokens used enable random access to other nodes, nevertheless having a system which is low-power in operation.