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:
Nov. 09, 2010
Filed:
Dec. 21, 2005
Mikko Kohvakka, Tampere, FI;
Timo D. Hämäläinen, Kangasala, FI;
Marko Hännikäinen, Pirkkala, FI;
Wirepas Oy, , FI;
Abstract
A wireless sensor network, a node device thereof and a method for arranging communications therein are presented. A first frequency is used in wireless communication of information between a headnode and subnodes of a first cluster () using a time slotted channel access scheme. A headnode of a second cluster () known the first frequency and selects a second, different frequency for use in wireless communication of information within said second cluster () using a time slotted channel access scheme. The headnode of the first cluster () is informed about the second frequency selected for the second cluster (). Information from the headnode of said first cluster () to the headnode of said second cluster () is communicated on said second frequency, using the same time slotted channel access scheme as other nodes in said second cluster ().